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Nathan Goodyear

Beneficial effects of a long-term oral L-arginine treatment added to a hypocaloric diet... - 0 views

ajpendo.physiology.org/...E906.full

L-Arginine weight loss diet overweight obesity insulin-resistant diabetic patients

shared by Nathan Goodyear on 09 Jul 11 - No Cached
  • L-arginine supplementation further decreased FM (P < 0.05) and waist circumference (P < 0.0001), preserving FFM (P < 0.03), and improved mean daily glucose profiles (P < 0.0001) and fructosamine (P < 0.03). Moreover, change in area under the curve of cGMP (second messenger of nitric oxide; P < 0.001), superoxide dismutase (index of antioxidant capacity; P < 0.01), and adiponectin levels (P < 0.02) increased, whereas basal endothelin-1 levels (P < 0.01) and leptin-to-adiponectin ratio (P < 0.05) decreased in the L-arginine group.
  • Nathan Goodyear on 09 Jul 11
     
    L-Arginine helps to preserve muscle, while increase fat loss.  This will help to prevent fat rebound in weight loss programs.  Additionally, insulin resistance improved.
Willow O'Donnell

Willow Medical - adlandpro - 0 views

www.adlandpro.com/...8__around_hollyspringsus1.aspx

Sell your IV pumps We buy purchase

shared by Willow O'Donnell on 04 Nov 14 - No Cached
  • Willow O'Donnell on 04 Nov 14
     
    Willow Medical provides Medical/Safety Supplies, IV pumps & Refurbished Medical Equipment to various market segments. Our company strives for customer satisfaction by offering personal service to meet your needs. Willow Medical is your source for all the latest up to date products.
Nathan Goodyear

Fifty- two-Week Treatment With Diet and Exercise Plus Transdermal Testosterone Reverses... - 0 views

onlinelibrary.wiley.com/...full

diet exercise nutrition diabetes metabolic syndrome men male hormone hormones low T low Testosterone

shared by Nathan Goodyear on 04 Mar 15 - No Cached
  • there appears to be a positive correlation between serum testosterone levels and insulin sensitivity in men across the full spectrum of glucose tolerance (Pitteloud et al, 2005), and this relationship is at least partially direct and not fully dependent on (changes in) elements of the MetS
  • supervised D&E alone led to significant improvements in testosterone concentrations, glycemic control, and components of the MetS
  • diet control, exercise, and testosterone supplementation may be beneficial in the management of men with T2D
  • ...7 more annotations...
  • androgen-deprivation therapy in males with prostatic cancer may be associated with an increased risk for T2D, which may be caused by negative effects on insulin sensitivity
  • insulin sensitivity, measured by HOMA, improved in both groups and with a significantly greater degree when testosterone was added to supervised D&E
  • Fasting insulin concentrations, a good representative of insulin sensitivity, did show a significant correlation with changes in circulating androgen levels, an observation in support of Pitteloud et al (2005), who showed a direct relationship between insulin sensitivity and circulating testosterone concentrations using the hyper-insulinemic euglycemic clamp technique
  • 52 weeks of testosterone treatment also significantly improved circulation levels of adiponectin and hsCRP, key serum markers of insulin sensitivity and hepatic steatosis
  • The changes in both adiponectin and hsCRP were significantly correlated with the therapy-induced changes in bioavailable testosterone
  • a negative correlation was found between hsCRP levels and bioavailable testosterone
  • serum PSA concentrations did not differ between the 2 treatment groups, indicating that short-term testosterone administration appears to be acceptably safe
  • Nathan Goodyear on 04 Mar 15
     
    Study of men with metabolic syndrome and type II Diabetes finds that diet and exercise alone improved glucose control and metabolic syndrome components by 31%.  The addition of Testosterone therapy increased this % to 81%.
Willow O'Donnell

Purchase IV pumps By Willowmed - 0 views

www.american-classifieds.net/adpage.php

Purchase infusion pumps Sell you infusion pumps Buy IV pumps

shared by Willow O'Donnell on 02 Dec 14 - No Cached
  • Willow O'Donnell on 02 Dec 14
     
    Willow Medical provides Medical/Safety Supplies and Equipment to various market segments. Willow Medical is your source for all the latest up to date products. 
Nathan Goodyear

Exercise-Associated Muscle Cramps - 0 views

www.ncbi.nlm.nih.gov/...PMC3445088

EAMC exercise associated muscle cramps athletes muscle cramps

shared by Nathan Goodyear on 27 Jan 15 - No Cached
  • athletes who develop EAMC often ingest similar amounts of fluid during exercise as do their noncramping counterparts
  • Oral fluid ingestion may be ineffective, and intravenous fluid may provide a faster delivery for athletes suffering from acute EAMC
  • It is interesting that stretching the affected muscle almost immediately relieves EAMC
  • ...9 more annotations...
  • Stretching, the primary treatment for acute EAMC
  • National Athletic Trainers’ Association recommends that athletes prone to muscle cramping add 0.3 to 0.7 g/L of salt to their drinks to stave off muscle cramps
  • Others have recommended adding higher amounts of sodium (about 3.0 to 6.0 g/L) to sports drinks based on the frequency of EAMC
  • intravenous infusion of fluids removes this delay, and it has been used to aid athletes who develop acute EAMC
  • maintaining hydration and adequate electrolyte levels is a good prevention strategy for individuals susceptible to EAMC
  • Fluid volumes of 1.8 L per hour have been well tolerated by tennis athletes who are susceptible to EAMC
  • Monitoring an athlete’s body weight is an easy method of ensuring adequate fluid replacement and individualizes each athlete’s fluid needs
  • the National Athletic Trainers’ Association and the American College of Sports Medicine recommend a volume of fluid that allows for less than a 2% body weight reduction
  • Endurance training may also serve as an effective means of preventing EAMC by expanding plasma volume and the extracellular fluid compartment15 and delaying neuromuscular fatigue
  • Nathan Goodyear on 27 Jan 15
     
    Exercise associated muscle cramps or EAMC is not worked out.  The theories include dehydration, mineral/electrolyte deficiencies, and neuromuscular activity.
wheelchairindia9

Ergonomic Wheelchair - 0 views

www.wheelchairindia.com/...ERGONOMIC-WHEELCHAIR

S-Shape Ergonomic Seating Wheelchair Karma S Ergo 305 Wheelchair Karma S Ergo 115 Wheelchair Karman S-Ergo 115 Ergonomic Wheelchair ergonomic series ergonomic wheelchairs

shared by wheelchairindia9 on 23 May 15 - No Cached
  • wheelchairindia9 on 23 May 15
     
    Ergonomic wheelchair series provides users with a large selection of ultra lightweight wheelchairs that can help improve life. This series has features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. The patented S-Shape Seating System that comes with every wheelchair model in this series provides an ergonomic seating frame that conforms and flexes to the shape of body. Karma S Ergo 115 Wheelchair: This model features our S-Shape Seating System and is our number one best seller for many reasons. At a mere 11.3 kg in weight with detachable foot rest and many features such as removable machine washable and dry-able cushions treated by AEIGIS treated anti-microbial coated seating system. Karma S-Ergo 115 Wheelchair Features: Ergonomic Handrims & S-Shape Ergonomic Seating System Fixed armrest w/ wider concave armpads Swing In & Away Footrests Backrest Pouch attached to the upholstery 24" flat free polyurethane tires, high tread, flat free wheels Seat width: 16"x17" or 18"x17" or 20"x 17" Silver 1/4" Aegis Anti-Bacterial Upholstery, washable Folding backrest / folding seat for easy traveling "Tube-in Center" foot-plate, assures better side leg support High strength, starting weight at only 11.3 kg. (w/o footrests) 7×1" Polyurethane front casters Upholstery: Black breathable mesh bottom & top AEIGIS Frame Color: Pearl Silver or Rose Red Weight Capacity of 115 kg. Karma S-Ergo 115 Wheelchair Measurements: Seat Width 16 inch., 18 inch., 20 inch. Seat Depth 17 inch. Armrest Height 8 inch. Seat Height 19 inch. Back Height 17 inch. Overall Height 36 inch. Overall Open Width 23 inch., 25 inch., 27 inch. Folded Width 12 inch. Overall Length 39 i
wheelchairindia9

Karman S-Ergo 115 - 0 views

www.wheelchairindia.com/...Karma-S-Ergo-115-Wheelchair

Ergo 115 Wheelchair Ensures Comfortable Ride Ergonomic Manual Wheelchair Ergonomic wheelchairs Karma S Ergo 115 Wheelchair Karma S Ergo 125 Wheelchair Karman S-Ergo 115 Ergonomic Transport Chair

shared by wheelchairindia9 on 17 Feb 16 - No Cached
  • wheelchairindia9 on 17 Feb 16
     
    Ergonomic wheelchairs have been tested and proven to be effective for relieving pressure throughout the body; this is confirmed by pressure chart mapping. Feeling comfortable on a wheelchair is something every user demands out of their new wheelchair, the ergonomic cushion that is included with the ergonomic series provides a level of comfort that is unparalleled. Ergonomic Transport Wheelchair provides the perfect shape to fit the human body to relieve pressure, increase stabilization, weight distribution and lower the risk of pressure sores and scoliosis. Lightweight Ergonomic Wheelchair features wide arm pads for extra support, folding back rest, detachable swing-away footrests, and a Tube-in Center foot-plate that provides extra support for the leg muscles. This wheelchair can hold up to daily use and is excellent for traveling. Ergonomic features flip-back armrest and swing away footrests. A lightweight frame that is 25 lbs. without footrests and a folding backrest allows easy travel or storage. The chair comes equipped with a padded anti-bacterial upholstery that is comfortable and washable. Karma Ergo Lite 2501 Wheelchair: The extremely lightweight Ergo Lite 2501 Transport Wheelchair weighs only 8.16 kg. and features an ergonomically-designed seat and backrest, making it one of the most comfortable transport chairs on the market. The folding seat and backrest make the S-Ergo ideal for storage or travel, and the built in AEGIS anti-bacterial cushion provides added comfort and support. Despite its light weight, the S-Ergo features a 115 kg. weight capacity along with large, 14" flat-free polyurethane rear tires. Karma Ergo Lite 2501 Wheelchair Features: Lightest transporter on the market! Patented S-Style Ergonomic Seat Frame 6061 T-6 Aircraft-grade Aluminum Only 18 lb . (w/ footrests) Built in Silver Aegis Anti-bacterial Cushion Fixed Armrests w/Concaved Armpads Pocket Behind Backrest & Small Carry Pouch on Each Armrest 6" x 1" Polyurethane
wheelchairindia9

Soma SM 100.3 - 0 views

www.wheelchairindia.com/...Soma-SM-100-3

Lightweight Chairs Independent For Wheelchair User Ultra Lightweight Wheelchair Lightweight Wheelchair Soma SM 100.3 Light Wheelchairs travel wheelchairs

shared by wheelchairindia9 on 07 Jan 16 - No Cached
  • wheelchairindia9 on 07 Jan 16
     
    Soma SM 100.3 The SM-100.3 is an aluminum alloy standard wheelchair that is economic, solid, and durable. Soma SM 100.3 Wheelchair Features: Elliptical frame The unique and stylish elliptical frame ensures that the chair is both rigid and robust. Integrated seating system For intensive wheelchair users, we provide seating system that can be free from hammock effect. The innovative and durable seating system makes it easy for you to detach seat upholstery for cleaning purpose. Secure non-slip footplate A non-slip and ergonomic footplate provides you with a stable and comfortable base for placing feet. Energy-saving tipping lever The ergonomic design allows caregivers to operate the lever without much effort so the casters can overcome obstacles such as thresholds and curbs. Soma SM 100.3 Wheelchair Measurements: Seat Width(cm):43 Seat Depth(cm):42 Caster Size(inch):7 Rear Wheel Size(Inch/QR) 16F/22F
wheelchairindia9

PF Night Splint Derotation - 0 views

www.wheelchairindia.com/...PF-Night-Splint-Derotation

Understanding The Role Of Treating Night Splints plantar fascia and intrinsic musculature Derotation foot splinting provides support to the knee multiple orthopedic problems Less slippage of product

shared by wheelchairindia9 on 21 Mar 16 - No Cached
  • wheelchairindia9 on 21 Mar 16
     
    PF Night Splint (Derotation) Applications Prevention and correction of foot drop. Night splint for early healing. Ambulatory, can be used as a day splint. Perfect post-operative immobilisation and derotation. Peroneal / Peritibial nerve or muscle damage. Ankle or Plantar flexion contracture and functional alignment. Can be used to protect the diabetic/ injured ankle & foot. PF Night Splint (Derotation) Features Removable de-rotation bar. Moulded foot casing, aesthetically pleasing and durable. Effective Liner, improved comfort. Highly functional Design, customized degree of dorsiflexion. Double strapping mechanism, better grip.
fnfdoc

Habits That Ruin Your Weight Loss Plan | Health Blog - 0 views

fnfdoc.com/...its-ruin-your-weight-loss-plan

Weight Loss Plan Habits Diet Binge Eating

shared by fnfdoc on 19 Sep 18 - No Cached
  • fnfdoc on 19 Sep 18
     
    Some Habits That Ruin Your Weight Loss Plan. Although we may follow a strict diet plan and hit the gym.., sometimes it becomes nearly impossible to get rid of those extra pounds... The problem lies with the seemingly harmless everyday habits that we have nurtured over the years and...
  • fnfdoc on 19 Sep 18
     
    While most of us are aware that eating cheesy sausages every day for breakfast is not really good for the waistline, there are many other subtle bad habits that keep on adding more pounds to our bodies. These habits are harmful because they have the potential to sabotage our weight loss plan.
Nathan Goodyear

Multiple Myeloma Tumor Cells are Selectively Killed by Pharmacologically-dosed Ascorbic... - 0 views

www.ebiomedicine.com/...fulltext

multiple myeloma vitamin C IV vitamin C smoldering myeloma cancer

shared by Nathan Goodyear on 25 Sep 17 - No Cached
  • Recent reports indicate that a certain ROS concentration is required for high-dose vitamin C to induce cytotoxicity in cancer cells.
  • The generation of ascorbyl- and H2O2 radicals by PAA increases ROS stress in cancer cells
  • In this study, we report that PAA is efficacious in killing MM cells in vitro and in vivo models, which generated levels of 20–40 mM ascorbate and 500 nM ascorbyl radicals after intraperitoneal administration of 4 g ascorbate per kilogram of body weight (Chen et al., 2008Chen et al., 2008), in xenograft MM mice
  • ...33 more annotations...
  • These data suggest that PAA may show a therapeutic advantage to blood cancers vs solid tumors because of the communication between tumor cells and blood plasma
  • These results strongly suggest that the mechanism of PAA killing of MM cells is indeed iron-dependent
  • These results suggest that PAA administration in SMM may be able to prevent progression to symtomatic MM
  • A recent study by Yun and colleagues demonstrated that vitamin C selectively kills KRAS and BRAF mutant colorectal cancer cells by targeting GAPDH, but spares normal cells
  • RAS family genes show the most frequent mutations in MM. KRAS, NRAS and BRAF are mutated in 22%, 20% and 7% of MM samples
  • the disease stage rather than the mutation of RAS and/or BRAF is the major predictive factor for PAA sensitivity in MM treatment
  • Other molecular mechanisms including ATP depletion and ATM-AMPK signaling have been reported to explain PAA-induced cell death
  • our pilot study also suggested that PAA could overcome drug resistance to bortezomib in MM cells
  • Our findings complement reported studies and further address the mechanism of action using clinical samples in which we observed that PAA killed tumor cells with high iron content, suggesting that iron might be the initiator of PAA cytotoxicity
  • combination of PAA with standard therapeutic drugs, such as melphalan, may significantly reduce the dose of melphalan needed
  • Combined treatment of reduced dose melphalan with PAA achieved a significantly longer progression-free survival than the same dose of melphalan alone.
  • These data also suggest that the bone marrow suppression induced by high-dose melphalan can be ameliorated by the combination of PAA with lower dose of melphalan because of the lack of toxicity of PAA on normal cells with low iron content.
  • if creatinine clearance is <30 mL/min, high dose ascorbic acid should be not administrated.
  • In MM preclinical and clinical studies, ascorbate was used as an adjunct drug and showed controversial results (Harvey et al., 2009, Perrone et al., 2009, Held et al., 2013, Sharma et al., 2012, Nakano et al., 2011, Takahashi, 2010, Sharma et al., 2009, Qazilbash et al., 2008). However, none of these tests used pharmacological doses of ascorbate and intravenous administration
  • Multiple myeloma (MM) is a plasma cell neoplasm.
  • Cameron and Pauling reported that high doses of vitamin C increased survival of patients with cancer
  • pharmacologically dosed ascorbic acid (PAA) 50–100 g (Chen et al., 2008, Padayatty et al., 2004, Hoffer et al., 2008, Padayatty et al., 2006, Welsh et al., 2013), administered intravenously, has potent anti-cancer activity and its role as anti-cancer therapy is being studied at the University of Iowa and in other centers
  • In the presence of catalytic metal ions like iron, PAA administered intravenously exerts pro-oxidant effects leading to the formation of highly reactive oxygen species (ROS), resulting in cell death
  • the labile iron pool (LIP) is significantly elevated in MM cells
  • The survival of CD138+ cells in vitro was significantly decreased following PAA treatment in all 9 MM
  • In contrast, no significant change of cell viability was observed in CD138− BM cells from the same patients
  • The same effect of PAA was also observed in the SMM patients
  • no response to PAA was detected in CD138+ cells from the 2 MGUS patients
  • the combination of melphalan plus PAA showed greater tumor burden reduction than each drug alone, suggesting a synergistic activity between these two drugs
  • Both catalase and NAC protect cells from oxidative damage
  • cells pretreated with NAC and catalase became resistant to PAA even at high doses
  • adding deferoxamine (DFO), an iron chelator, to OCI-MY5 cells before PAA treatment was also sufficient to prevent PAA-induced cellular death
  • iron is essential for PAA to achieve its anti-cancer activity
  • PAA induced early necrosis (Fig. 3Fig. 3A, 60 min) followed by late apoptosis
  • results further indicated that PAA induced mitochondria-mediated apoptosis
  • PAA by reacting with LIP and generating ROS induces mitochondria-mediated apoptosis in which AIF1 cleavage is important for cell death.
  • ROS and H2O2 are well known factors mediating PAA-induced cancer cell death
  • PAA was sensitive to all 9 MMs and 2 SMMs
  • Nathan Goodyear on 25 Sep 17
     
    animal study finds high-dose, pharmacologic vitamin C found to kill multiple myeloma cells via pro-oxidant effect found in similar studies in dealing with different cancers.
Nathan Goodyear

Pharmacologic ascorbic acid concentrations selectively kill cancer cells: Action as a p... - 0 views

www.pnas.org/...13604.full

IV vitamin C cancer ascorbic acid vitamin C H2O2 GPX glutathione Perioxidase

shared by Nathan Goodyear on 09 Feb 11 - Cached
  • Taken together, these data indicate that ascorbate at concentrations achieved only by i.v. administration may be a pro-drug for formation of H2O2, and that blood can be a delivery system of the pro-drug to tissues.
  • These findings give plausibility to i.v. ascorbic acid in cancer treatment, and have unexpected implications for treatment of infections where H2O2 may be beneficial
  • pharmacologic concentrations of ascorbate killed cancer but not normal cells, that cell death was dependent only on extracellular but not intracellular ascorbate, and that killing was dependent on extracellular hydrogen peroxide (H2O2) formation with ascorbate radical as an intermediate
  • ...48 more annotations...
  • Our data show that ascorbic acid selectively killed cancer but not normal cells, using concentrations that could only be achieved by i.v. administration
  • Ascorbate-mediated cell death was due to protein-dependent extracellular H2O2 generation, via ascorbate radical formation from ascorbate as the electron donor. Like glucose, when ascorbate is infused i.v., the resulting pharmacologic concentrations should distribute rapidly in the extracellular water space (42). We showed that such pharmacologic ascorbate concentrations in media, as a surrogate for extracellular fluid, generated ascorbate radical and H2O2. In contrast, the same pharmacologic ascorbate concentrations in whole blood generated little detectable ascorbate radical and no detectable H2O2. These findings can be accounted for by efficient and redundant H2O2 catabolic pathways in whole blood (e.g., catalase and glutathione peroxidase) relative to those in media or extracellular fluid
  • ascorbic acid administered i.v. in pharmacologic concentrations may serve as a pro-drug for H2O2 delivery to the extracellular milieu
  • H2O2 generated in blood is normally removed by catalase and glutathione peroxidase within red blood cells, with internal glutathione providing reducing equivalents
  • The electron source for glutathione is NADPH from the pentose shunt, via glucose-6-phosphate dehydrogenase. If activity of this enzyme is diminished, the predicted outcome is impaired H2O2 removal causing intravascular hemolysis, the observed clinical finding.
    • Nathan Goodyear
      Nathan Goodyear on 05 Mar 18
       
      The mechansism here is inadequate recycling of GSH due to lack of G6PD, build up of intracellular H2O2 and RBC lysis--hemolysis.
  • Only recently has it been understood that the discordant clinical findings can be explained by previously unrecognized fundamental pharmacokinetics properties of ascorbate
  • Intracellular transport of ascorbate is tightly controlled in relation to extracellular concentration
  • Intravenous ascorbate infusion is expected to drastically change extracellular but not intracellular concentrations
  • For i.v. ascorbate to be clinically useful in killing cancer cells, pharmacologic but not physiologic extracellular concentrations should be effective, independent of intracellular ascorbate concentrations.
    • Nathan Goodyear
      Nathan Goodyear on 05 Mar 18
       
      accumulation of extracellular vitamin C is the effect.
  • It is unknown why ascorbate, via H2O2, killed some cancer cells but not normal cells.
  • There was no correlation with ascorbate-induced cell death and glutathione, catalase activity, or glutathione peroxidase activity.
  • H2O2, as the product of pharmacologic ascorbate concentrations, has potential therapeutic uses in addition to cancer treatment, especially in infections
  • Neutrophils generate H2O2 from superoxide,
  • i.v. ascorbate is effective in some viral infections
  • H2O2 is toxic to hepatitis C
  • Use of ascorbate as an H2O2-delivery system against sensitive pathogens, viral or bacterial, has substantial clinical implications that deserve rapid exploration.
  • Recent pharmacokinetics studies in men and women show that 10 g of ascorbate given i.v. is expected to produce plasma concentrations of nearly 6 mM, which are >25-fold higher than those concentrations from the same oral dose
  • As much as a 70-fold difference in plasma concentrations is expected between oral and i.v. administration,
  • Complementary and alternative medicine practitioners worldwide currently use ascorbate i.v. in some patients, in part because there is no apparent harm
  • Human Burkitt's lymphoma cells
  • We first investigated whether ascorbate in pharmacologic concentrations selectively affected the survival of cancer cells by studying nine cancer cell lines
  • Clinical pharmacokinetics analyses show that pharmacologic concentrations of plasma ascorbate, from 0.3 to 15 mM, are achievable only from i.v. administration
  • plasma ascorbate concentrations from maximum possible oral doses cannot exceed 0.22 mM because of limited intestinal absorption
  • For five of the nine cancer cell lines, ascorbate concentrations causing a 50% decrease in cell survival (EC50 values) were less than 5 mM, a concentration easily achievable from i.v. infusion
  • All tested normal cells were insensitive to 20 mM ascorbate.
    • Nathan Goodyear
      Nathan Goodyear on 05 Mar 18
       
      meaning safe.
  • Lymphoma cells were selected because of their sensitivity to ascorbate
  • As ascorbate concentration increased, the pattern of death changed from apoptosis to pyknosis/necrosis, a pattern suggestive of H2O2-mediated cell death
  • Apoptosis occurred by 6 h after exposure, and cell death by pyknosis was ≈90% at 14 h after exposure
    • Nathan Goodyear
      Nathan Goodyear on 05 Mar 18
       
      work continued beyond the IVC therapy itself
  • In contrast to lymphoma cells, there was little or no killing of normal lymphocytes and monocytes by ascorbate
  • Ascorbate is transported into cells as such by sodium-dependent transporters, whereas dehydroascorbic acid is transported into cells by glucose transporters and then immediately reduced internally to ascorbate
  • Whether or not intracellular ascorbate was preloaded, extracellular ascorbate induced the same amount and type of death.
  • extracellular ascorbate in pharmacologic concentrations mediates death of lymphoma cells by apoptosis and pyknosis/necrosis, independently of intracellular ascorbate.
  • H2O2 as the effector species mediating pharmacologic ascorbate-induced cell death
  • Superoxide dismutase was not protective
  • Because these data implicated H2O2 in cell killing, we added H2O2 to lymphoma cells and studied death patterns using nuclear staining (19, 28). The death patterns found with exogenous H2O2 exposure were similar to those found with ascorbate
  • For both ascorbate and H2O2, death changed from apoptosis to pyknosis/necrosis as concentrations increased
  • Sensitivity to direct exposure to H2O2 was greater in lymphoma cells compared with normal lymphocytes and normal monocytes
  • There was no association between the EC50 for ascorbate-mediated cell death and intracellular glutathione concentrations, catalase activity, or glutathione peroxidase activity
  • H2O2 generation was dependent on time, ascorbate concentration, and the presence of trace amounts of serum in media
  • ascorbate radical is a surrogate marker for H2O2 formation.
  • whatever H2O2 is generated should be removed by glutathione peroxidase and catalase within red blood cells, because H2O2 is membrane permeable
  • The data are consistent with the hypothesis that ascorbate in pharmacologic concentrations is a pro-drug for H2O2 generation in the extracellular milieu but not in blood.
  • The occurrence of one predicted complication, oxalate kidney stones, is controversial
  • In patients with glucose-6-phosphate dehydrogenase deficiency, i.v. ascorbate is contraindicated because it causes intravascular hemolysis
  • ascorbate at pharmacologic concentrations in blood is a pro-drug for H2O2 delivery to tissues.
  • ascorbate, an electron-donor in such reactions, ironically initiates pro-oxidant chemistry and H2O2 formation
  • data here showed that ascorbate initiated H2O2 formation extracellularly, but H2O2 targets could be either intracellular or extracellular, because H2O2 is membrane permeant
    • Nathan Goodyear
      Nathan Goodyear on 05 Mar 18
       
      the conversion of ascorbate to H2O2 occurs extracellular
  • More than 100 patients have been described, presumably without glucose-6-phosphate dehydrogenase deficiency, who received 10 g or more of i.v. ascorbate with no reported adverse effects other than tumor lysis
  • Nathan Goodyear on 09 Feb 11
     
    IV vitamin C benefits cancer patients
Nathan Goodyear

Frontiers | Management of Glioblastoma Multiforme in a Patient Treated With Ketogenic M... - 0 views

www.frontiersin.org/...full

press-pulse therapy hyperbaric ketogenic metabolic therapy cancer ketogenic diet Glioblastoma glioblastoma multiforme HBOT nutrition

shared by Nathan Goodyear on 01 Apr 18 - No Cached
  • The SOC for GBM was modified in this patient to initiate KMT prior to surgical resection, to eliminate steroid medication, and to include HBOT as part of the therapy
  • the greatest therapeutic benefit for patients (near 1.0)
  • The observed reduction in blood glucose in our patient would reduce lactic acid fermentation in the tumor cells, while the elevation of ketone bodies would fuel normal cells thus protecting them from hypoglycemia and oxidative stress
  • ...30 more annotations...
  • Previous studies showed that GBM survival and tumor growth was correlated with blood glucose levels
  • Evidence indicates that glioma cells cannot effectively use ketone bodies for energy due to defects in the number, structure, and function of their mitochondria
  • The accuracy of the GKI as a predictor for therapeutic efficacy, however, is better when ketone bodies are measured from the blood than when measured from the urine
  • A reduction of glucose-driven lactic acid fermentation would not only increase tumor cell apoptosis, but would also reduce inflammation and edema in the tumor microenvironment thus reducing tumor cell angiogenesis and invasion
  • Besides serving as a metabolic fuel for GBM, glutamine is also an essential metabolite for normal immune cells
  • therapies that inhibit glutamine availability and utilization must be strategically employed to avoid inadvertent impairment of immune cell functions
  • we used the non-toxic green tea extract, EGCG, and chloroquine in an attempt to limit glutamine availability to the tumor cells
  • EGCG is thought to target the glutamate dehydrogenase activity that facilitates glutamine metabolism in GBM cells
  • Chloroquine, on the other hand, will inhibit lysosomal digestion thus restricting fermentable amino acids and carbohydrates from phagocytosed materials in the tumor microenvironment
  • HBOT to increase oxidative stress in the tumor cells
  • As glucose and glutamine fermentation protect tumor cells from oxidative stress, reduced availability of these metabolites under ketosis could enhance the therapeutic action of HBOT, as we recently described
  • Prior to subtotal tumor resection and standard of care (SOC), the patient conducted a 72-h water-only fast
  • Following the fast, the patient initiated a vitamin/mineral-supplemented ketogenic diet (KD) for 21 days that delivered 900 kcal/day
  • KD (increased to 1,500 kcal/day at day 22
  • the patient received metformin (1,000 mg/day), methylfolate (1,000 mg/day), chloroquine phosphate (150 mg/day), epigallocatechin gallate (400 mg/day), and hyperbaric oxygen therapy (HBOT) (60 min/session, 5 sessions/week at 2.5 ATA)
  • Biomarkers showed reduced blood glucose and elevated levels of urinary ketones with evidence of reduced metabolic activity (choline/N-acetylaspartate ratio) and normalized levels of insulin, triglycerides, and vitamin D
  • This is the first report of confirmed GBM treated with a modified SOC together with KMT and HBOT, and other targeted metabolic therapies
  • Glioblastoma multiforme (GBM) is the most common and malignant of the primary adult brain cancers
  • less than 20% of younger adults generally survive beyond 24 months
  • glucose and glutamine are the primary fuels that drive the rapid growth of most tumors including GBM
  • Glucose drives tumor growth through aerobic fermentation (Warburg effect), while glutamine drives tumor growth through glutaminolysis
  • The fermentation waste products of these molecules, i.e., lactic acid and succinic acid, respectively, acidify the tumor microenvironment thus contributing further to tumor progression
  • Glucose and glutamine metabolism is also responsible for the high antioxidant capacity of the tumor cells thus making them resistant to chemo- and radiotherapies
  • The reliance on glucose and glutamine for tumor cell malignancy comes largely from the documented defects in the number, structure, and function of mitochondria and mitochondrial-associated membranes
  • These abnormalities cause the neoplastic GBM cells to rely more heavily on substrate level phosphorylation than on oxidative phosphorylation for energy
  • dexamethasone not only increases blood glucose levels but also increases glutamine levels through its induction of glutamine synthetase activity
    • Nathan Goodyear
      Nathan Goodyear on 21 May 18
       
      use mannitol instead
  • Calorie restriction and restricted KD are anti-angiogenic, anti-inflammatory, anti-invasive, and also kill tumor cells through a proapoptotic mechanism
  • Evidence also shows that therapeutic ketosis can act synergistically with several drugs and procedures to enhance cancer management improving both progression free and overall survival
  • hyperbaric oxygen therapy (HBOT) increases oxidative stress on tumor cells especially when used alongside therapies that reduce blood glucose and raise blood ketones
  • The glutamine dehydrogenase inhibitor, epigallocatechin gallate (EGCG) is also proposed to target glutamine metabolism
  • Nathan Goodyear on 01 Apr 18
     
    Case study of Glioblastoma treated with ketogenic metabolic therapy as an adjuct to modified standard therapy.
Nathan Goodyear

How is the Immune System Suppressed by Cancer - 1 views

www.cancertutor.com/ancer-suppresses-immune-system

iNOS cancer immune system

shared by Nathan Goodyear on 23 May 18 - No Cached
  • 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
      Nathan Goodyear on 23 May 18
       
      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
      Nathan Goodyear on 23 May 18
       
      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
      Nathan Goodyear on 23 May 18
       
      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
      Nathan Goodyear on 23 May 18
       
      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
  • Nathan Goodyear on 23 May 18
     
    Great review of the immunosuppression in cancer driven by the likes of NO.
Nathan Goodyear

PLOS ONE: The Ketogenic Diet and Hyperbaric Oxygen Therapy Prolong Survival in Mice wit... - 0 views

journals.plos.org/...article

ketogenic ketogenic diet ketones ketone bodies cancer nutrition diet hyperbaric oxygen hyperbaric therapy hyperbaric

shared by Nathan Goodyear on 17 Nov 16 - No Cached
  • This finding strongly supports the efficacy of the KD and HBO2T as therapies to inhibit tumor progression and prolong survival in animals with metastatic cancer.
  • We found that the KD fed ad libitum significantly increased mean survival time in mice with metastatic cancer
  • Ketogenic diets are also known to have an appetite suppressing effect which may contribute to body weight loss
  • ...5 more annotations...
  • the ketogenic diet may inhibit cancer progression in part by indirect dietary energy restriction
  • KD with HBO2T. Combining these therapies nearly doubled survival time in mice with metastatic cancer,
  • low carbohydrate or ketogenic diets promote weight loss in overweight individuals, they are also known to spare muscle wasting during conditions of energy restriction and starvation
  • dietary-induced therapeutic ketosis in a cancer patient would prevent muscle wasting similarly as it does with athletes undergoing intense exercise
  • when given as an adjuvant treatment to advanced cancer patients, the KD improves quality of life and enhances the efficacy of chemotherapy treatment in the clinic
  • Nathan Goodyear on 17 Nov 16
     
    mouse study finds that ketogenic diet plus hyperbaric O2 treatment prolongs survival.
  • Open TeleShop on 17 May 17
     
    Hey Dear Check Out Our Online Shopping store in all Over Pakistan.As Seen as On Tv Products Like as Health Beauty,Fitness,Homeware,Kitchenware,And Other Electronic Products in Pakistan Check Out Now| www.openTeleshop.Com
Nathan Goodyear

Hyperbaric oxygen therapy promotes neurogenesis: where do we stand? - 0 views

www.ncbi.nlm.nih.gov/...PMC3231808

hbot hyperbaric therapy hyperbaric brain TBI stroke neurogenesis neuorplasticity

shared by Nathan Goodyear on 18 May 17 - No Cached
  • Numerous in vivo and in vitro studies confirm that HBOT induces neurogenesis
  • HIF-1α is the principal mediator of cellular hypoxia adaptations
  • activated by hypoxia, HIF-1α causes the transcription of its regulated downstream genes, including erythropoietin (EPO) and VEGF which are known to promote neurogenesis
  • ...10 more annotations...
  • The safety of HBOT was also evaluated and it was pointed out that, if given at proper paradigms, like 1.5 ATA for 60 minutes, HBOT will not cause oxygen toxicity
  • Rockswold et al., on the other hand, found that HBOT might be potentially beneficial for severe TBI patients
  • McDonagh et al., concluded that there was insufficient evidence to establish the effectiveness of HBOT in the treatment of TBI
  • The first multicenter, randomized, double-blind, controlled trial in 2009 found that 40-hour HBOT of 24% oxygen at 1.3 ATM produced significant improvement in children's overall functioning, receptive language, social interaction, eye contact, and sensory/cognitive awareness compared to those received slightly pressurized room air
  • Another study in 2010 on 16 autism patients, adopting a similar treatment paradigm, showed no effect on a wide array of behavioral evaluations
  • To date, there is little evidence that HBOT causes malignant growth or metastasis. A history of malignancy should therefore not be considered as a contraindication for HBOT
  • HBOT enhances the production of reactive oxygen species (ROS) and causes oxidative stress in body tissues
  • Excessive accumulation of oxidative stress may contribute to neurodegenerative processes and cell death in the brain, as seen in diseases like Alzheimer's disease (AD) and Parkinson's disease (PD)
  • Hormesis
  • process that results in a functional improvement of cellular stress resistance, survival, and longevity in response to sub-lethal levels of stress
  • Nathan Goodyear on 18 May 17
     
    great review of hbot, brain injury, neuroplasticity and neurogenesis.
spineneuro

ভারতে বাংলা রিয়েল মেডিকেল অভিজ্ঞতা: ডাঃ পরেশ দোশি ভারতে নিউরোকেয়ারে শ্রেষ্ঠ... - 0 views

banglarealmedicalexperiences.blogspot.com/...nce-in-neurocare-in-india.html

shared by spineneuro on 01 Nov 21 - No Cached
  • spineneuro on 01 Nov 21
     
    ডাঃ পরেশ দোশি আপনার ওষুধগুলিকে অপ্টিমাইজ করেন এবং উপযুক্ত হলে, অস্ত্রোপচারের চিকিত্সার বিকল্পগুলি সুপারিশ করেন৷ গভীর মস্তিষ্কের উদ্দীপনা অস্ত্রোপচারের মধ্য দিয়ে যাওয়ার আগে আপনি তার সাথে দেখা করবেন। ভারতের সেরা নিউরোসার্জন ডঃ পরেশ দোশির সাথে একটি অ্যাপয়েন্টমেন্ট বুক করুন এবং আপনি আপনার চিকিৎসা সম্পর্কে আপনার প্রশ্ন জিজ্ঞাসা করতে পারেন মেইল করুন dr.pareshdoshi@neurospinehospital.com কল করুন
Nathan Goodyear

First case of postmortem study in a patient vaccinated against SARS-CoV-2 - 0 views

www.ncbi.nlm.nih.gov/...PMC8051011

SARS-CoV-2 COVID-19 ADE COVID COVID19 vaccination antibody dependent enhancement

shared by Nathan Goodyear on 30 Jul 21 - No Cached
  • Nathan Goodyear on 30 Jul 21
     
    Antibody dependent viral enhancement from the vaccine.
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