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Nathan Goodyear

How is the Immune System Suppressed by Cancer - 1 views

  • nitric oxide (NO) released by tumor cells
  • Excellent work by Prof de Groot of Essen, indicated by adding exogenous xanthine oxidase ( XO) in hepatoma cells, hydrogen peroxide was produced to destroy the hepatoma cells
  • NO from eNOS in cancer cells can travel through membranes and over long distances in the body
  • ...43 more annotations...
  • NO also is co linked to VEGF which in turn increases the antiapoptotic gene bcl-2
  • The other important influence of NO is in its inhibition of the proapoptoic caspases cascade. This in turn protects the cells from intracellular preprogrammed death.
  • nitric oxide in immune suppression in relation to oxygen radicals is its inhibitory effect on the binding of leukocytes (PMN) at the endothelial surface
  • Inhibition of inducible Nitric Oxide Synthase (iNOS)
  • NO from the tumor cells actually suppresses the iNOS, and in addition it reduces oxygen radicals to stop the formation of peroxynitrite in these cells. But NO is not the only inhibitor of iNOS in cancer.
  • Spermine and spermidine, from the rate limiting enzyme for DNA synthases, ODC, also inhibit iNOS
  • tolerance in the immune system that decreases the immune response to antigens on the tumors
  • Freund’s adjuvant
  • increase in kinases in these cells which phosphorylate serine, and tyrosine
  • responsible for activation of many growth factors and enzymes
  • phosphorylated amino acids suppress iNOS activity
  • Hexokinase II
  • Prostaglandin E2, released from tumor cells is also an inhibitor of iNOS, as well as suppressing the immune system
  • Th-1 subset of T-cells. These cells are responsible for anti-viral and anti-cancer activities, via their cytokine production including Interleukin-2, (IL-2), and Interleukin-12 which stimulates T-killer cell replication and further activation and release of tumor fighting cytokines.
    • Nathan Goodyear
       
      Th1 cells stimulate NK and other tumor fighting macrophages via IL-2 and IL-12; In contrast, Th2, which is stimulated in allergies and parasitic infections, produce IL-4 and IL-10.  IL-4 and IL-10 inhibit TH-1 activation and the histamine released from mast cell degranulation upregulates T suppressor cells to further immune suppression.
  • Th-2 subset of lymphocytes, on the other hand are activated in allergies and parasitic infections to release Interleukin-4 and Interleukin-10
  • These have respectively inhibitory effects on iNOS and lymphocyte Th-1 activation
  • Mast cells contain histamine which when released increases the T suppressor cells, to lower the immune system and also acts directly on many tumor Histamine receptors to stimulate tumor growth
  • Tumor cells release IL-10, and this is thought to be one of the important areas of Th-1 suppression in cancer patients
  • IL-10 is also increased in cancer causing viral diseases such as HIV, HBV, HCV, and EBV
  • IL-10 is also a central regulator of cyclooxygenase-2 expression and prostaglandin production in tumor cells stimulating their angiogenesis and NO production
  • nitric oxide in tumor cells even prevents the activation of caspases responsible for apoptosis
    • Nathan Goodyear
       
      NO produced by cancer cells inhibits proapoptotic pathways such as the caspases.
  • early stages of carcinogenesis, which we call tumor promotion, one needs a strong immune system, and fewer oxygen radicals to prevent mutations but still enough to destroy the tumor cells should they develop
  • later stages of cancer development, the oxygen radicals are decreased around the tumors and in the tumor cells themselves, and the entire cancer fighting Th-1 cell replication and movement are suppressed. The results are a decrease in direct toxicity and apoptosis, which is prevented by NO, a suppression of the macrophage and leukocyte toxicity and finally, a suppression of the T-cell induced tumor toxicity
  • cGMP is increased by NO
  • NO in cancer is its ability to increase platelet-tumor cell aggregates, which enhances metastases
  • the greater the malignancies and the greater the metastatic potential of these tumors
  • The greater the NO production in many types of tumors,
  • gynecological
  • elevated lactic acid which neutralizes the toxicity and activity of Lymphocyte immune response and mobility
  • The lactic acid is also feeding fungi around tumors and that leads to elevated histamine which increases T-suppressor cells.  Histamine alone stimulates many tumor cells.
    • Nathan Goodyear
       
      The warburg effect in cancer cells results in the increase in local lactic acid production which suppresses lymphocyte activity and toxicity as well as stimulates histamine production with further stimulates tumor cell growth.
  • T-regulatory cells (formerly,T suppressor cells) down regulate the activity of Natural killer cells
  • last but not least, the Lactic acid from tumor cells and acidic diets shifts the lymphocyte activity to reduce its efficacy against cancer cells and pathogens in addition to altering the bacteria of the intestinal tract.
  • intestinal tract bacteria in cancer cells release sterols that suppress the immune system and down regulate anticancer activity from lymphocytes.
  • In addition to the lactic acid, adenosine is also released from tumors. Through IL-10, adenosine and other molecules secreted by regulatory T cells, the CD8+ cells can be inactivated to an anergic state
  • Adenosine up regulates the PD1 receptor in T-1 Lymphocytes and inhibits their activity
  • Adenosine is a purine nucleoside found within the interstitial fluid of solid tumors at concentrations that are able to inhibit cell-mediated immune responses to tumor cells
  • Adenosine appears to up-regulate the PD1 receptor in T-1 Lymphocytes and inhibits the immune system further
  • Mast cells with their release of histamine lower the immune system and also stimulate tumor growth and activate the metalloproteinases involved in angiogenesis and metastases
  • COX 2 inhibitors or all trans-retinoic acid
  • Cimetidine, an antihistamine has been actually shown to increase in apoptosis in MDSC via a separate mechanism than the antihistamine effect
    • Nathan Goodyear
       
      cimetidine is an H2 blocker
  • interleukin-8 (IL-8), a chemokine related to invasion and angiogenesis
  • In vitro analyses revealed a striking induction of IL-8 expression in CAFs and LFs by tumor necrosis factor-alpha (TNF-alpha)
  • these data raise the possibility that the majority of CAFs in CLM originate from resident LFs. TNF-alpha-induced up-regulation of IL-8 via nuclear factor-kappaB in CAFs is an inflammatory pathway, potentially permissive for cancer invasion that may represent a novel therapeutic target
  •  
    Great review of the immunosuppression in cancer driven by the likes of NO.
wheelchairindia9

Karma Power Wheelchair KP-10.3 - 0 views

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    Electric wheelchairs, also called power chairs, are often a more suitable option for those who are physically unable to self propel a manual wheelchair.Power Wheelchairs/Electric Wheelchairs is specially designed for Disabled and Handicapped People. This are recognized as the prominent manufacturer and supplier of a wide array of Power Wheelchairs. Variety of Power Wheelchairs for handicapped and disability product like- Variety of Power Wheelchairs: Karma KP 10-2 Power Wheelchair Karma KP 10-3 Power Wheelchair Karma KP 80 Power Wheelchair GM Lite Power Wheelchair Bronco Wheelchair Angel Wheelchair Karma KP 10.2 Power Wheelchair: Features: Seat, base & battery quickly detach for easy storageand transportation. Come with captain seat. With seat platform, the captain seat can be moved forward or backward using tools which is included. Adjustable armrest width and height. Footrests can be moved forward or backward for optimum placement. Quick release battery pack for easy storage and battery pack change. Karma KP 10-2 Power Wheelchair is a lightweight, compact, manoeuvrable power chair which now incorporates Karma's patented 'S-Ergo' seating system. It is compact enough for indoor use but powerful enough for outdoors. The concept behind the design of the power chair was to make it as light as possible and convenient to transport. The Karma KP 10-2 Power Wheelchair can be taken apart quickly and easily into four manageable components. The heaviest part weighs just 24kg. The quick release battery box has a convenient charging point built into it, which allows the batteries to be charged away from the power chair. Karma KP 10.3 Power Wheelchair: Ergonomic seat system provides comfortable seating. Tool-free disassembled into 3 parts for traveling and transportation. Quick-release battery pack. Washable upholstery. Height adjustable and flip back armrest. 2-level adjustable back angle. Features: Frame: Breaks down into 4
wheelchairindia9

Easy Handicap Life By Heavy Duty Wheelchair - 0 views

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    Mobility is an important part of human life. When an affordable wheelchair becomes necessary, for whatever reason, the circumstances are often not ideal. Purchasing an affordable wheelchair starts with knowing the patient and researching the types of wheelchairs available. It is a great resource on many different types of medical wheelchairs. Bariatric wheelchair, designed for users between 18 and 26 stone. It has a padded sling and backrest to ensure the comfort of the user, and the armrests can be removed to allow easy transfer into and out of the wheelchair. The Heavy User Wheelchair is self-propelled, giving the option to either push it, or have the user move themselves. The large rear wheels make the wheelchair well-suited to outdoor use, and allow the user to change the direction they face when in social situations. It has folding frame, so it is easy for storage and transport. Interchangeable frame components allow to grow and change the chairs width and depth. There are custom frame specifications available. Maximum option choices allow chair to be built to the individual's specifications. It has folding "lockout" cross-brace. Cross-brace locks to limit flex in the frame for more efficient propelling. Double cross-brace. Allows more strength and enables greater weight capacity. Wheelchair Bariatric has Adjustable back height. Ensures optimal positioning of backrest for stability and scapular movement. Stabilizer bar to minimize flex and provides a more efficient ride. Multiple footplate options ensure optimal positioning of lower extremities. Quick-release axle allows quick removal of rear wheels for easy transport. Adjustable Axle Plate Adjustments help to maximize stability and propulsion of the chair. Allows center of gravity adjustment for more efficient ride. Also makes it possible to adjust the rear frame height when it's necessary to change the caster wheels. Description: Attendant cable brake. 14" rear wheels. Detachable and washable cu
wheelchairindia9

Easy Handicap Life By Heavy Duty Wheelchair - 0 views

  •  
    Mobility is an important part of human life. When an affordable wheelchair becomes necessary, for whatever reason, the circumstances are often not ideal. Purchasing an affordable wheelchair starts with knowing the patient and researching the types of wheelchairs available. It is a great resource on many different types of medical wheelchairs. Bariatric wheelchair, designed for users between 18 and 26 stone. It has a padded sling and backrest to ensure the comfort of the user, and the armrests can be removed to allow easy transfer into and out of the wheelchair. The Heavy User Wheelchair is self-propelled, giving the option to either push it, or have the user move themselves. The large rear wheels make the wheelchair well-suited to outdoor use, and allow the user to change the direction they face when in social situations. It has folding frame, so it is easy for storage and transport. Interchangeable frame components allow to grow and change the chairs width and depth. There are custom frame specifications available. Maximum option choices allow chair to be built to the individual's specifications. It has folding "lockout" cross-brace. Cross-brace locks to limit flex in the frame for more efficient propelling. Double cross-brace. Allows more strength and enables greater weight capacity. Wheelchair Bariatric has Adjustable back height. Ensures optimal positioning of backrest for stability and scapular movement. Stabilizer bar to minimize flex and provides a more efficient ride. Multiple footplate options ensure optimal positioning of lower extremities. Quick-release axle allows quick removal of rear wheels for easy transport. Adjustable Axle Plate Adjustments help to maximize stability and propulsion of the chair. Allows center of gravity adjustment for more efficient ride. Also makes it possible to adjust the rear frame height when it's necessary to change the caster wheels. Description: Attendant cable brake. 14" rear wheels. Detachable and washable cu
wheelchairindia9

Easy Handicap Life By Heavy Duty Wheelchair - 0 views

  •  
    Mobility is an important part of human life. When an affordable wheelchair becomes necessary, for whatever reason, the circumstances are often not ideal. Purchasing an affordable wheelchair starts with knowing the patient and researching the types of wheelchairs available. It is a great resource on many different types of medical wheelchairs. Bariatric wheelchair, designed for users between 18 and 26 stone. It has a padded sling and backrest to ensure the comfort of the user, and the armrests can be removed to allow easy transfer into and out of the wheelchair. The Heavy User Wheelchair is self-propelled, giving the option to either push it, or have the user move themselves. The large rear wheels make the wheelchair well-suited to outdoor use, and allow the user to change the direction they face when in social situations. It has folding frame, so it is easy for storage and transport. Interchangeable frame components allow to grow and change the chairs width and depth. There are custom frame specifications available. Maximum option choices allow chair to be built to the individual's specifications. It has folding "lockout" cross-brace. Cross-brace locks to limit flex in the frame for more efficient propelling. Double cross-brace. Allows more strength and enables greater weight capacity. Wheelchair Bariatric has Adjustable back height. Ensures optimal positioning of backrest for stability and scapular movement. Stabilizer bar to minimize flex and provides a more efficient ride. Multiple footplate options ensure optimal positioning of lower extremities. Quick-release axle allows quick removal of rear wheels for easy transport. Adjustable Axle Plate Adjustments help to maximize stability and propulsion of the chair. Allows center of gravity adjustment for more efficient ride. Also makes it possible to adjust the rear frame height when it's necessary to change the caster wheels. Description: Attendant cable brake. 14" rear wheels. Detachable and washable cu
Nathan Goodyear

Toxicity of the spike protein of COVID-19 is a redox shift phenomenon: A novel therapeu... - 0 views

  • Redox shift is due to Warburg effect and mitochondrial impairment.
  • Redox shift is due to Warburg effect and mitochondrial impairment.
  • Redox shift is due to Warburg effect and mitochondrial impairment.
  • ...88 more annotations...
  • The cytokine storm is a consequence of mitochondrial dysfunction
  • The cytokine storm is a consequence of mitochondrial dysfunction
  • The cytokine storm is a consequence of mitochondrial dysfunction
  • The cytokine storm is a consequence of mitochondrial dysfunction
  • Lipoic acid, Methylene Blue and Chlorine dioxide relieve COVID-19 spike protein toxicity
  • Lipoic acid, Methylene Blue and Chlorine dioxide relieve COVID-19 spike protein toxicity
  • Lipoic acid, Methylene Blue and Chlorine dioxide relieve COVID-19 spike protein toxicity
  • Lipoic acid, Methylene Blue and Chlorine dioxide relieve COVID-19 spike protein toxicity
  • most diseases display a form of anabolism due to mitochondrial impairment
  • most diseases display a form of anabolism due to mitochondrial impairment
  • most diseases display a form of anabolism due to mitochondrial impairment
  • infection by Covid-19 follows a similar pattern
  • chronic inflammation
  • Long-term effects include redox shift and cellular anabolism as a result of the Warburg effect and mitochondrial dysfunction
  • Long-term effects include redox shift and cellular anabolism as a result of the Warburg effect and mitochondrial dysfunction
  • Long-term effects include redox shift and cellular anabolism as a result of the Warburg effect and mitochondrial dysfunction
  • Long-term effects include redox shift and cellular anabolism as a result of the Warburg effect and mitochondrial dysfunction
  • infection by Covid-19 follows a similar pattern
  • unrelenting anabolism leads to the cytokine storm,
  • unrelenting anabolism leads to the cytokine storm,
  • unrelenting anabolism leads to the cytokine storm,
  • chronic inflammation
  • chronic inflammation
  • infection by Covid-19 follows a similar pattern
  • Lipoic acid and Methylene Blue have been shown to enhance the mitochondrial activity, relieve the Warburg effect and increase catabolism
  • Lipoic acid and Methylene Blue have been shown to enhance the mitochondrial activity, relieve the Warburg effect and increase catabolism
  • Lipoic acid and Methylene Blue have been shown to enhance the mitochondrial activity, relieve the Warburg effect and increase catabolism
  • Methylene Blue, Chlorine dioxide and Lipoic acid may help reduce long-term Covid-19 effects by stimulating the catabolism
  • Methylene Blue, Chlorine dioxide and Lipoic acid may help reduce long-term Covid-19 effects by stimulating the catabolism
  • Methylene Blue, Chlorine dioxide and Lipoic acid may help reduce long-term Covid-19 effects by stimulating the catabolism
  • direct consequence of redox iMeBalance, itself a consequence of decreased energy yield by the mitochondria
  • direct consequence of redox iMeBalance, itself a consequence of decreased energy yield by the mitochondria
  • mitochondrial dysfunction and increased levels of lactate, which are important characteristics of metabolic shift and Warburg effect in many diseases
  • mitochondrial dysfunction and increased levels of lactate, which are important characteristics of metabolic shift and Warburg effect in many diseases
  • increased lactate dehydrogenase activity (LDH) was observed in COVID-19 patients
  • increased lactate dehydrogenase activity (LDH) was observed in COVID-19 patients
  • almost every disease presents an increased anabolism
  • almost every disease presents an increased anabolism
  • cell division is the most sophisticated way to release entropy
  • cell division is the most sophisticated way to release entropy
    • Nathan Goodyear
       
      Wow
    • Nathan Goodyear
       
      Wow
  • transition from catabolism to anabolism is driven by a redox shift
  • transition from catabolism to anabolism is driven by a redox shift
  • viral spike protein binds to ACE2 receptor of the host cell [22,23].
  • redox signaling plays an important role in regulating immune function and inflammation, and disruptions in this signaling can lead to excessive cytokine production and immune system activation
  • Aging is associated with a poor control of the redox balance
  • thiol/disulfide homeostasis
  • reduced extracellular environment in the elderly and the increased susceptibility to Covid-19 infection
  • reduced extracellular environment in the elderly and the increased susceptibility to Covid-19 infection
  • Redox signaling tightly modulates the inflammatory response and oxidative stress has been reported in acute Covid-19
  • People at high risk are the elderly, patients suffering from metabolic syndrome such as obesity, or those suffering from chronic diseases such as cancer or inflammation
  • COVID-19 patients with severe disease have higher levels of oxidative stress markers and lower antioxidant levels
  • oxidative stress can activate the NLRP3 inflammasome, which is a protein complex that plays a key role in the cytokine storm
  • inflammation leads to the formation of ROS and RNS, while redox iMeBalance results in cellular damage, which in turn triggers an inflammatory response
  • persistently elevated mtROS triggers endothelial dysfunction and inflammation, which results in a vicious loop involving ROS, inflammation, and mitochondrial dysfunction
  • Damaged mitochondria releasing ROS induce inflammation via the NLRP3 inflammasome
  • Damaged mitochondria releasing ROS induce inflammation via the NLRP3 inflammasome
  • reduced environment during the cytokine storm
  • IL-2 is highly up-regulated in Covid-19 patients [37], and IL-2 is known to significantly stimulate the generation of NO in patients
  • Nitric acid is also the key mediator of IL-2-induced hypotension and vascular leak syndrome
  • mitochondrial dysfunction has been linked to the pathogenesis of Covid-19
  • mitochondrial dysfunction triggered by SARS-CoV-2 leads to damage to the mitochondria
  • mitochondrial dysfunction triggered by SARS-CoV-2 leads to damage to the mitochondria
  • As catabolism is decreased, entropy is released through anabolism
  • Elevated levels of lactate, a characteristic of the Warburg effect, were also reported in the high-risk Covid-19
  • elevated levels of ventricular lactic acid consistent with oxidative stress
  • A decrease of ΔΨm is implicated in several inflammation-related diseases
  • decrease in ΔΨm in leucocytes from Covid-19 patients
  • vaccinated with RNA or DNA vaccines triggering the synthesis of the viral spike protein in human cells
  • viral reactivation in varicella-zoster virus [55] or hepatitis [56], coagulopathy and resulting stroke and myocarditis following both DNA-based vaccines [57] and RNA-based vaccines
  • Covid-19, mitochondrial impairment
  • characteristic of the Warburg effect is present in almost every disease and appears to be a central feature in most of the hallmarks of cancer
  • inflammation, mitochondrial dysfunction and increased lactate concentrations in the extracellular fluid
  • In Covid-19, like any inflammation, there is a metabolic rewiring where cells rely on glycolysis
  • As the mitochondria are impaired, the infected cell cannot catabolize efficiently. It will release lactic acid in the blood stream
    • Nathan Goodyear
       
      Mitochondrial impairment
  • Striking similarities are seen between cancer, Alzheimer's disease and Covid-19, all related to the Warburg effect
  • Cancer, inflammation, Alzheimer's, and Parkinson's diseases share a common peculiarity, the inability of the cell to export entropy outside the body in the harmless form of heat
    • Nathan Goodyear
       
      Entropy: lack of order or predictability; gradual decline into disorder.
  • MEB relieves the Warburg effect [87], improves memory [77], is active in the treatment of depressive episodes [79,80] and reduces the importance of ischemic strokes
  • MEB relieves the Warburg effect [87], improves memory [77], is active in the treatment of depressive episodes [79,80] and reduces the importance of ischemic strokes
  • MEB has been shown to inhibit SARS-Cov-2 replication in vitro
  • MEB has been shown to inhibit SARS-Cov-2 replication in vitro
  • It has been shown that Covid-19-patients treated with MEB, have a significant reduction in hospital stay duration and mortality
  • MeB is an acceptor-donor molecule
  • MeB + can take a pair of electrons (of H atoms) and MeBH can release this pair easily, so that MeB is partially recycled like a catalyst
  • MeB acts as an electron bridge between a donor (FADH2, FMNH, NADH) and an acceptor (complex IV of ETC or oxygen itself)
  • As a coenzyme of pyruvate dehydrogenase (PDH), alpha-lipoic acid (ALA) initiates the formation of acetyl-CoA to feed the TCA cycle
  • ALA enhances the catabolism of carbon. cycle and therefore may reduce the Warburg effect and consequently, lactate production
  • Methylene Blue plays a similar role after the TCA cycle, by carrying electrons to complex IV of the electron transport chain
  • Drugs such as lipoic acid and MeB, which target the metabolism, decrease the redox shift by increasing catabolism
wheelchairindia9

Choosing Correct Power wheel chair - 0 views

  •  
    Power wheel chair is one type of wheel chairs which is also referred and known as Electric Power Wheel Chair or (EPW). An Power wheel chair is used to move such wheel chairs instead of pushing by some attendant or by hand rims. It also has navigational controls so that it can be moved to any desired direction. Power wheel chairs are suitable for those, who are weaker to move the manual wheel chair using the hand rims and also provides its users a level of comfort. The user can control its speed and direction by a joystick sort of control while sitting on the chair. There are many different types of Power wheel chair and finding the appropriate one will depend on each individual's medical condition. Wheelchairs can be manual or electrically powered. Manual wheelchairs can come in either a folding or rigid design. Rigid type wheelchairs tend to be lighter and more easily maneuvered and should be used by more active wheelchair users. Folding wheelchairs would be an excellent choice for individuals needing to use the wheelchair for travel on a frequent basis. Many people have disabilities that make it difficult to propel themselves in a manual wheelchair and in this situation an electrically powered wheelchair may prove more useful. Power chairs are little bit more complex and the user can control it with minimum effort. This kind of chair will give extraordinary maneuverability, stability and power and it is perfect for people who want more from their wheelchairs. Better Life Mobility Center offers various models, so sure that won't have problem to choose one that will suit completely. All the power chairs that offer are the result of the extensive research and designed with the user's needs in mind. Karma latest power standing wheelchair is now available in India. Power Wheelchairs For Sale - Increase freedom Stand up again improve independence and be find of body. Karma KP 10.2 Power Wheelchair: Features: Seat, base & battery quickly detach f
wheelchairindia9

Choosing Correct Power wheel chair - 0 views

  •  
    Power wheel chair is one type of wheel chairs which is also referred and known as Electric Power Wheel Chair or (EPW). An Power wheel chair is used to move such wheel chairs instead of pushing by some attendant or by hand rims. It also has navigational controls so that it can be moved to any desired direction. Power wheel chairs are suitable for those, who are weaker to move the manual wheel chair using the hand rims and also provides its users a level of comfort. The user can control its speed and direction by a joystick sort of control while sitting on the chair. There are many different types of Power wheel chair and finding the appropriate one will depend on each individual's medical condition. Wheelchairs can be manual or electrically powered. Manual wheelchairs can come in either a folding or rigid design. Rigid type wheelchairs tend to be lighter and more easily maneuvered and should be used by more active wheelchair users. Folding wheelchairs would be an excellent choice for individuals needing to use the wheelchair for travel on a frequent basis. Many people have disabilities that make it difficult to propel themselves in a manual wheelchair and in this situation an electrically powered wheelchair may prove more useful. Power chairs are little bit more complex and the user can control it with minimum effort. This kind of chair will give extraordinary maneuverability, stability and power and it is perfect for people who want more from their wheelchairs. Better Life Mobility Center offers various models, so sure that won't have problem to choose one that will suit completely. All the power chairs that offer are the result of the extensive research and designed with the user's needs in mind. Karma latest power standing wheelchair is now available in India. Power Wheelchairs For Sale - Increase freedom Stand up again improve independence and be find of body. Karma KP 10.2 Power Wheelchair: Features: Seat, base & battery quickly detach f
wheelchairindia9

Choosing Correct Power wheel chair - 0 views

  •  
    Power wheel chair is one type of wheel chairs which is also referred and known as Electric Power Wheel Chair or (EPW). An Power wheel chair is used to move such wheel chairs instead of pushing by some attendant or by hand rims. It also has navigational controls so that it can be moved to any desired direction. Power wheel chairs are suitable for those, who are weaker to move the manual wheel chair using the hand rims and also provides its users a level of comfort. The user can control its speed and direction by a joystick sort of control while sitting on the chair. There are many different types of Power wheel chair and finding the appropriate one will depend on each individual's medical condition. Wheelchairs can be manual or electrically powered. Manual wheelchairs can come in either a folding or rigid design. Rigid type wheelchairs tend to be lighter and more easily maneuvered and should be used by more active wheelchair users. Folding wheelchairs would be an excellent choice for individuals needing to use the wheelchair for travel on a frequent basis. Many people have disabilities that make it difficult to propel themselves in a manual wheelchair and in this situation an electrically powered wheelchair may prove more useful. Power chairs are little bit more complex and the user can control it with minimum effort. This kind of chair will give extraordinary maneuverability, stability and power and it is perfect for people who want more from their wheelchairs. Better Life Mobility Center offers various models, so sure that won't have problem to choose one that will suit completely. All the power chairs that offer are the result of the extensive research and designed with the user's needs in mind. Karma latest power standing wheelchair is now available in India. Power Wheelchairs For Sale - Increase freedom Stand up again improve independence and be find of body. Karma KP 10.2 Power Wheelchair: Features: Seat, base & battery quickly detach f
Nathan Goodyear

Ghrelin is a growth-hormone-releasing acylated peptide from stomach : Abstract : Nature - 0 views

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    ghrelin is a GH releasing peptide released from the stomach
Nathan Goodyear

Renin-angiotensin system and cancer: A review - 0 views

  • crucial role of the RAS in the development and maintenance of cancer
  • kidneys, which produce renin in response to decreased arterial pressure, reduced sodium in the distal tubule, or sympathetic nervous system activity via the β-adrenergic receptors
  • Renin is secreted from the juxtaglomerular cells into the bloodstream where it encounters angiotensinogen (AGN), normally produced by the liver
  • ...22 more annotations...
  • Renin catalyses the conversion of AGN to angiotensin I (ATI), which is quickly cleaved by angiotensin converting enzyme (ACE) to form angiotensin II (ATII)
  • ATII triggers the release of aldosterone from the adrenal glands, which stimulates reabsorption of sodium and water and thereby increases blood volume and blood pressure
  • ATII also acts on smooth muscle to cause vasoconstriction of the arterioles
  • ATII promotes the release of antidiuretic hormone from the posterior pituitary gland, which results in water retention and triggers the thirst reflex
  • ability of non-CSCs to ‘de-differentiate’ into CSCs due to epigenetic or environmental factors, which further increases the complexity of tumour biology and treatment
  • efficacy of RAS modulators on cancer in both cancer models and cancer patients
  • A localised (‘paracrine’) RAS mechanism has been identified in many types of cancers, and interruption of the control of the RAS is thought to be the basis for its role in cancer
  • Components of the RAS are expressed by these CSCs, supporting the hypothesis of the presence of a ‘paracrine RAS’ in regulating these CSCs
  • Renin is an enzyme normally released by the kidneys in response to falling arterial pressure
  • a study of GBM demonstrating overexpression of PRR coupled with the observation that inhibition of renin reduces cellular proliferation and promotes apoptosis
  • PRR has been found to be vital for normal Wnt signalling
  • A major focus of PRR research is its relationship with Wnt signalling
  • suggest a crucial role for PRR activation on the proliferation of CSCs, possibly via Wnt/β-catenin signalling, leading to carcinogenesis.
  • Angiotensin converting enzyme (ACE), also known as CD143, is the endothelial-bound peptidase which physiologically converts ATI to ATII
  • ACE is crucial in the regulation of blood pressure, angiogenesis and inflammation
  • results suggest that an overactive ACE promotes cancer growth and progression, and an inhibited or low-activity ACE may have cancer-protective effects
  • When bound to ATII or ATIII it causes vasoconstriction by stimulating the release of vasopressin, reabsorption of water and sodium by promoting secretion of aldosterone and insulin, fibrosis, cellular growth and migration, pro-inflammation, glucose release from the liver, increased plasma triglyceride concentration, and reduced gluconeogenesis
  • ATIIR1 is a G-protein-coupled receptor, with downstream signalling involved in vasodilation, hypertrophy and NF-κB activation leading to TNF-α and PAI-1 expression
  • ATIIR1 has well-documented links with cancer, with one study demonstrating its overexpression in ~20% of breast cancer patients
  • the effect of RAS dysregulation has been associated with increased VEGF expression and angiogenesis in cancers
  • In ovarian and cervical cancer, ATIIR1 overexpression has been shown to be an indicator of tumour invasiveness
  • administration of ATIIR1 blockers (ARBs) have been associated with reduced tumour size, reduction in tumour vascularisation, lower occurrence of metastases, and lower VEGF levels
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    Great review on RAS in cancer.
wheelchairindia9

Ultra Lightweight Travel Wheelchair With Seat Belt - 0 views

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    Travel Wheelchair is ideal for those looking for an easily portable wheelchair without sacrificing sturdiness or weight capacity. In order to accommodate various heights, models feature adjustable backs and the threaded seat screw inserts reduce stripping from upholstery damage to give the chair a longer life. The wheels feature sealed bearings to keep dirt out, making the wheels virtually maintenance free. The Travel Chair is a lightweight sturdy aluminum framed portable chair. It is easily transportable and comes with a compact carry bag, making it ideal for stowing away in cars, buses, trains, and more. This wheelchair can be used both indoors and outdoors on forgiving terrain, with a convenient step for the attendant to lift the chair over obstacles. This travel chair gives the freedom to go, with the added convenience of folding up to a manageable size. This lightweight Steel Travel Chair with Fixed Full Arms or Detachable Desk Arms has a foldable back, making it convenient and easy to store and transport. The silver vein frame is scratch resistant and it comes standard with a comfortable, durable, and easy to clean, black nylon upholstery seat and back. The caster wheels in front and rear with provide a smooth ride over most surfaces. The padded armrests, rear wheel locks, swing away footrest and seat belt all combine to make this travel chair convenient, durable, easy to transport and safe. Karma Travel Wheelchair KM TV 20.2 Karma Travel Wheelchair KM TV 20.2 - 606 T-6 aircraft-grade aluminum-alloy frame provides incredible strength. Easy-to-fold in three seconds. Karma Travel Wheelchair KM TV 20.2 Features Type: Travel Wheelchair T-6 aircraft-grade aluminum Secure brake improve safety Padded flip back armrest PU front caster & rear wheel Karma Travel Wheelchair KM TV 20.2 Measurements Weight: 8.9kg Seat width: 39.5cm Tyre: PU front casters and rear wheels Capacity: 100kg Folded size: (L/W/H): 610mm x 350mm x710mm. Lightweight wh
wheelchairindia9

Easy For Users Mount Travel Wheelchair - 0 views

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    Travel Wheelchair is constructed of tough and light aluminum. Its comfort features include nylon upholstery, swing-away footrests and padded armrests. The seatbelt adds safety, while the composite wheels make mobility convenient. This lightweight transport wheelchair is easy to fold and store compactly thanks to the back-release hinge. This foldable transport wheelchair is the ideal lightweight wheelchair for the quick transport of patients to and from treatment sites. It can even be used inside the home. A seatbelt is provided to secure an ailing or weak patient to the chair. The padded armrests and swing-away footrests are provided for comfort. This blue transport chair's nylon upholstery can be cleaned as needed. It can easily be stored as the rear hinge releases and folds down. This transport chair is also narrower than a manual chair--great for maneuvering tight hallways or narrow doorways in home. It folds up easily, and can be moved in and out of vehicle with ease. For extra convenience, each chair also comes with footrests that swing away, making it especially easy for users to mount and dismount faster and more safely. Transport Chair is a highly convenient solution to limited mobility needs. Karma KM 2500 Small Wheel Wheelchair: Karma KM 2500 Small Wheel Wheelchair Specifications: Width 18" Front/Rear Wheels 6" to 14" Seat Width 47cm Seat Depth 40cm Overall Width 66cm Overall Collapsed Width 36cm Armrest Height 21cm Overall Length 90cm Seat Height 47cm Backrest Height 38cm Overall Height 86cm Weight 9.2 k.g. Karma KM 2500 Small Wheel Wheelchair Seat and Back: AEGIS Microbe Shield Approved by the FDA, EPA, EU, etc., bonded anti-microbial barrier upholstery protects from odor, staining and deterioration from bacteria, fungus and other microorganisms. It is a shield for your health. Karma KM 2500 Small Wheel Wheelchair Extended Armrest: By simulating the natural position of arms, the extended armrest design is ergo
Nathan Goodyear

Cutting Edge: IL-12 Induces CD4+CD25− T Cell Activation in the Presence of T ... - 0 views

  • Whereas IL-12 instigates Th1 immune responses, CD4+CD25+ regulatory T cells (Treg)3 actively restrain them
  • Following engagement of their TCR, Treg suppress the proliferation of conventional CD4+CD25− T responder cells in vitro
  • Furthermore, they inhibit the development of CD4+ T cell responses against alloantigens, tumor, microbial, and self-Ags in vivo.
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  • Treg act to prevent spontaneous autoimmunity and to limit collateral damage to healthy tissues during adaptive immunity. However, these cells also have the potential to sabotage protective antimicrobial responses
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    Great T cell activiation review: Il-2 stimulates NK cells primarily release from TH1 cells and T cytotoxic lymphocytes are under the control of IL-12 released primarily from dendritic cells.  Inflammatory cytokines in the presence of Treg to stimulate CD4+CD25- T cell activation.
Nathan Goodyear

Ascorbic acid: Chemistry, biology and the treatment of cancer - 0 views

  • iron and ascorbate has long been used as an oxidizing system; the combination of these two reagents is referred to as the Udenfriend system
  • ascorbate serves as a reducing cofactor for many enzymes
  • uptake of ascorbate from the intestinal tract is very tightly controlled
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  • pharmacokinetic data indicate that intravenous administration of ascorbate can bypass this tight control resulting in highly elevated plasma levels
  • ascorbate readily oxidizes to produce H2O2, pharmacological ascorbate has been proposed as a prodrug for the delivery of H2O2 to tumors
  • Ascorbate is an excellent reducing agent and readily undergoes two consecutive, one-electron oxidations to form ascorbate radical (Asc•−) and dehydroascorbic acid (DHA)
  • Ascorbate oxidizes readily. The rate of oxidation is dependent on pH and is accelerated by catalytic metals
  • In near-neutral buffers with contaminating metals, the oxidation and subsequent loss of ascorbate can be very rapid
  • Ascorbate is required for maintaining iron in the ferrous state
  • In the presence of catalytic metal ions, ascorbate can also exert pro-oxidant effects
  • Ascorbate is an excellent one-electron reducing agent that can reduce ferric (Fe3+) to ferrous (Fe2+) iron, while being oxidized to ascorbate radical
  • In a classic Fenton reaction, Fe2+ reacts with H2O2 to generate Fe3+ and the very oxidizing hydroxyl radical
  • e presence of ascorbate can allow the recycling of Fe3+ back to Fe2+, which in turn will catalyze the formation of highly reactive oxidants from H2O2
  • Depending on concentrations, the effects of ascorbate on models of lipid peroxidation can be pro- or antioxidant
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    ferritin released enhanced pharmacologic ascorbate induced-cytotoxicity, indicating that ferritin with high iron-saturation could be a source of catalytic iron. Consistent with this, ascorbate has also been shown to be capable of releasing iron from cellular ferritin
Nathan Goodyear

Testosterone: a metabolic hormone in health and disease - 0 views

  • E2 and the inflammatory adipocytokines tumour necrosis factor α (TNFα) and interleukin 6 (IL6) inhibit hypothalamic production of GNRH and subsequent release of LH and FSH from the pituitary
  • Leptin, an adipose-derived hormone with a well-known role in regulation of body weight and food intake, also induces LH release under normal conditions via stimulation of hypothalamic GNRH neurons
  • In human obesity, whereby adipocytes are producing elevated amounts of leptin, the hypothalamic–pituitary axis becomes leptin resistant
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  • there is evidence from animal studies that leptin resistance, inflammation and oestrogens inhibit neuronal release of kisspeptin
  • Beyond hypothalamic action, leptin also directly inhibits the stimulatory action of gonadotrophins on the Leydig cells of the testis to decrease testosterone production; therefore, elevated leptin levels in obesity may further diminish androgen status
  • Prostate cancer patients with pre-existing T2DM show a further deterioration of insulin resistance and worsening of diabetic control following ADT
  • ADT for the treatment of prostatic carcinoma in some large epidemiological studies has been shown to be associated with an increased risk of developing MetS and T2DM
  • Non-diabetic men undergoing androgen ablation show increased occurrence of new-onset diabetes and demonstrate elevated insulin levels and worsening glycaemic control
  • increasing insulin resistance assessed by glucose tolerence test and hypoglycemic clamp was shown to be associated with a decrease in Leydig cell testosterone secretion in men
  • The response to testosterone replacement of insulin sensitivity is in part dependent on the androgen receptor (AR)
  • Low levels of testosterone have been associated with an atherogenic lipoprotein profile, characterised by high LDL and triglyceride levels
  • a positive correlation between serum testosterone and HDL has been reported in both healthy and diabetic men
  • up to 70% of the body's insulin sensitivity is accounted for by muscle
  • Testosterone deficiency is associated with a decrease in lean body mass
  • relative muscle mass is inversely associated with insulin resistance and pre-diabetes
  • GLUT4 and IRS1 were up-regulated in cultured adipocytes and skeletal muscle cells following testosterone treatment at low dose and short-time incubations
  • local conversion of testosterone to DHT and activation of AR may be important for glucose uptake
  • inverse correlation between testosterone levels and adverse mitochondrial function
  • orchidectomy of male Wistar rats and associated testosterone deficiency induced increased absorption of glucose from the intestine
  • (Kelley & Mandarino 2000). Frederiksen et al. (2012a) recently demonstrated that testosterone may influence components of metabolic flexibility as 6 months of transdermal testosterone treatment in aging men with low–normal bioavailable testosterone levels increased lipid oxidation and decreased glucose oxidation during the fasting state.
  • Decreased lipid oxidation coupled with diet-induced chronic FA elevation is linked to increased accumulation of myocellular lipid, in particular diacylglycerol and/or ceramide in myocytes
  • In the Chang human adult liver cell line, insulin receptor mRNA expression was significantly increased following exposure to testosterone
  • Testosterone deprivation via castration of male rats led to decreased expression of Glut4 in liver tissue, as well as adipose and muscle
  • oestrogen was found to increase the expression of insulin receptors in insulin-resistant HepG2 human liver cell line
  • FFA decrease hepatic insulin binding and extraction, increase hepatic gluconeogenesis and increase hepatic insulin resistance.
  • Only one, albeit large-scale, population-based cross-sectional study reports an association between low serum testosterone concentrations and hepatic steatosis in men (Völzke et al. 2010)
  • This suggests that testosterone may confer some of its beneficial effects on hepatic lipid metabolism via conversion to E2 and subsequent activation of ERα.
  • hypogonadal men exhibiting a reduced lean body mass and an increased fat mass, abdominal or central obesity
  • visceral adipose tissue was inversely correlated with bioavailable testosterone
  • there was no change in visceral fat mass in aged men with low testosterone levels following 6 months of transdermal TRT, yet subcutaneous fat mass was significantly reduced in both the thigh and the abdominal areas when analysed by MRI (Frederiksen et al. 2012b)
  • ADT of prostate cancer patients increased both visceral and subcutaneous abdominal fat in a 12-month prospective observational study (Hamilton et al. 2011)
  • Catecholamines are the major lipolysis regulating hormones in man and regulate adipocyte lipolysis through activation of adenylate cyclase to produce cAMP
  • deficiency of androgen action decreases lipolysis and is primarily responsible for the induction of obesity (Yanase et al. 2008)
  • may be some regional differences in the action of testosterone on subcutaneous and visceral adipose function
  • proinflammatory adipocytokines IL1, IL6 and TNFα are increased in obesity with a downstream effect that stimulates liver production of CRP
  • observational evidence suggests that IL1β, IL6, TNFα and CRP are inversely associated with serum testosterone levels in patients
  • TRT has been reported to significantly reduce these proinflammatory mediators
  • This suggests a role for AR in the metabolic actions of testosterone on fat accumulation and adipose tissue inflammatory response
  • testosterone treatment may have beneficial effects on preventing the pathogenesis of obesity by inhibiting adipogenesis, decreasing triglyceride uptake and storage, increasing lipolysis, influencing lipoprotein content and function and may directly reduce fat mass and increase muscle mass
  • Early interventional studies suggest that TRT in hypogonadal men with T2DM and/or MetS has beneficial effects on lipids, adiposity and parameters of insulin sensitivity and glucose control
  • Evidence that whole-body insulin sensitivity is reduced in testosterone deficiency and increases with testosterone replacement supports a key role of this hormone in glucose and lipid metabolism
  • Impaired insulin sensitivity in these three tissues is characterised by defects in insulin-stimulated glucose transport activity, in particular into skeletal muscle, impaired insulin-mediated inhibition of hepatic glucose production and stimulation of glycogen synthesis in liver, and a reduced ability of insulin to inhibit lipolysis in adipose tissue
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    Great review of the Hypogonadal-obesity-adipocytokine hypothesis.
Nathan Goodyear

Insulin-stimulated release of D-chiro-inositol-co... [Metabolism. 2008] - PubMed - NCBI - 0 views

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    D-chiro-inositol release correlated with improved insulin sensitivity.
Nathan Goodyear

The role of long chain fatty acids in regulating food intake and cholecystokinin releas... - 0 views

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    long chain fatty acids (LCFA), associated with decreased calorie intake.  This occurs through up regulation/release of cholecystokinin.
Nathan Goodyear

Metabolic influences on neuroendocrine regulation of reproduction - 0 views

  • Energy storage occurs mainly at the level of white adipose tissue, where adipocytes secrete the anorexigenic adipokine leptin
  • humans and laboratory animals with leptin or insulin deficiency or resistance and/or increased ghrelin levels exhibit delayed or absent puberty and frequently display hypogonadotropic hypogonadism, which prevents fertility
  • Ghrelin suppresses pulsatile gonadotropin-releasing hormone (GnRH) release [14,15], thus serving as a signal to suppress reproduction in times of famine
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  • Neuropeptides derived from POMC/CART neurons exert a potent anorectic action, thus decreasing food intake and body weight
  • AgRP and NPY have the opposite (orexigenic) effect, inducing food intake.
  • GnRH neurons have been shown to express insulin receptor mRNA and protein [27] and are activated by insulin
  • Kisspeptins (encoded by KISS1) have been identified in the last decade as the most potent secretagogues of GnRH release.
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    Good, although brief, discussion of the interaction between metabolism and hormones.  Kisspeptin is a GNRH secreatagogue "upstream".   Insulin, Leptin, and Gherlin can inhibit GNRH through resistance and low levels.  Probably a U shaped graph of optimal activity.
tapforfreedom

EFT Emotional Freedom Techniques Practitioner - Kalleen Henderson: Tapforfreedom.com : ... - 0 views

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    Kalleen Henderson specialized in EFT (Emotional Freedom Technique) and Matrix Reimprinting tapping to release stress and create physical and/or emotional balance. http://tapforfreedom.com
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    Kalleen Henderson specialized in EFT (Emotional Freedom Technique) and Matrix Reimprinting tapping to release stress and create physical and/or emotional balance. http://tapforfreedom.com
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