By the end of the investigation, almost 30 percent of patients in both groups achieved full remission from their depression, and another 20 percent significant displayed improvement, based on standardized psychiatric measurements.
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Restoring happiness in people with depression - 0 views
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Maybe I should be looking into 'dampened reward/pleasure circuit mechanisms.' The problem would be taking the brain images. Would that be possible for this class? Because perhaps that's what I'm missing--a way to test a 'happiness hypothesis' and measure it.
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Exercise can substitute effectively as second 'medication' for people with depression, ... - 0 views
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Depression and exercise... I'd been thinking about doing a study on happiness and exercise.
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These findings are the result of a four-year study conducted by UT Southwestern's psychiatry department in conjunction with the Cooper Institute in Dallas
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This study shows that exercise can be as effective as adding another medication. Many people would rather use exercise than add another drug, particularly as exercise has a proven positive effect on a person's overall health and well-being."
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Unfortunately, I don't have 4 years for study, and I actually want to CONDUCT an experiment.
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Estrogen concentrations in manure runoff: Pelletized manure reduces toxic runoff - 1 views
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This is related to what we talked about this afternoon, Mrs. Nash--hormone levels and fish.
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Socially Anxious Kids Are Bully Targets | Elementary School Students & Bullying | Bully... - 1 views
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it may be particularly important for withdrawn youth to develop and participate in friendships through organized sports, play dates, and other such activities."
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I think that yeah! that is the answer. It may get youth more comfortable around kids their own age.
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An earlier study published in 2010 in the journal Child Development found that bullies pick on unpopular children. Gay and lesbian students, or kids perceived to be gay or lesbian, are also at risk.
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They are seen as different or awkward. Maybe they need to rethink how people see them. Maybe they should try to get to know others.
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Even compared with unsociable children, the researchers found, anxious-solitary withdrawn kids have fewer friends and are more likely to lose their friends over time. Anxious-solitary kids were also more emotionally sensitive than their peers and were more likely to be excluded and bullied. Having stable friendships protects children from victimization, the study found.
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It must be hard, because the anxious-solitary kids WANT to interact, but are too scared to. That makes me feel sorry for them and maybe they are emotional cause they are lonely; they may feel like they have no one. So, i could see where these results are very true. Kids must have stable friendships.
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Interesting how this study appears to be so "common sense" Does this suggest something about common human response?
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'Runner's High' May Also Strengthen Hearts - 1 views
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I am guessing the two are chemicals that produce similar effects in humans - they are linked to happiness.
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blocking opioid receptors completely eliminated these cardio-protective effects in exercising rats, suggesting that opioids are responsible for some of the cardiac benefits of exercise.
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I've heard that simply picturing/imagining you're doing exercise can elevate your heart rate. Is that true? I saw a blip about it on the news once. Unfortunately, it didn't go into much detail, other than that it was simulated and somehow the test subject's muscles reacted as they would have if he were exercising.
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Females choose mates for their personalities, zebra finch study shows - 0 views
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WOW! That is so awesome! Can fish also choose mates based on personalities?
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The research team assessed male and female birds separately for personality traits through a series of behavioural tests.
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(blue) I didn't even know birds could have personalities. Are they the same as human characteristics such as: being funny, out going, shy, ect. Or are they either mellow or angry all the time. If they feel a certain way...what causes that?
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If you were investigating this trait with fish, I wonder what "exploratory" would look like?
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"Exploratory females seem to have the most to gain by choosing exploratory mates. We have shown previously that pairs of zebra finches that are both exploratory raise offspring in better condition than those that are mismatched or unexploratory. Similar patterns have been seen in other birds and fish. However, this is the first evidence that the personality of both partners plays a role in mate choice."
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Metformin and exercise combination less effective for glucose control - 0 views
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Hey, Marcy, check it out. Exercise AND diabetes. It kind of goes with both of us, yeah??
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Boulé thinks that because both metformin and exercise act to lower glucose levels, the combination may have triggered a counter regulatory response by the body to prevent glucose levels dipping too much. "During exercise, glucagon concentrations increased in the blood (a hormone secreted by the pancreas that raises glucose levels) but when we combined exercise and metformin the glucagon levels were almost twice as elevated.
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Ahh....didn't release the medicine lowered glucose levels - it does appear as if the two would not produce a positive effect.
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Hens Eject Sperm from Unwelcome Suitors | Female Control & Battle of Sexes | Chicken Se... - 0 views
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I think I learned this in DC Biology that hens can do that. which is crazy!!
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A new study has shown that, during an average ejection, a hen jettisons 80 percent of the sperm a rooster deposits in her reproductive tract. This has a huge impact on the competition among males fighting to father her future chicks, according to study researcher Tommaso Pizzari, an evolutionary biologist and university lecturer at Oxford University in the United Kingdom.
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This means that only the best of the best hens have chicks! That stinks for the loser hens..
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The best of the roosters will have chicks - that's natural selection in action!
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Hens, however, often don't have a choice in mates. They prefer males at the top of the pecking order, but other roosters with lower status will force the hens — about half their size — to mate.
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So, they know what they want. but, sometimes they get taken advantage of, because roosters are bigger than them. But, then they can reject their sperm and choose what's best for the offspring.
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Scientists already knew that hens could eject sperm, but in the recent study, they set out to find evidence that hens were actively using this technique to control fertilization.
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They already knew this, but now they are seeing if the hen actually controls the fertilization. that's nuts!
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They then videotaped any sperm ejection that followed the mating and collected the results. To determine how this compared with the total sperm the roosters had deposited, the researchers captured all of their semen during another set of controlled mating attempts.
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this is how they tested it. I wonder how you would videotape sperm exactly.
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When mating with a series of roosters, hens ejected more semen from the later mates. Since lower-status roosters don't get the first shot at the hens, for this reason alone, their sperm are more likely to be ejected, Pizzari explained.
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It's like they know which ones are lower status and have timed it perfectly to get rid of their sperm.
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n addition, lower status roosters were more likely to ejaculate more semen in one shot, and the team found that hens were more likely to eject larger ejaculations.
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Pesticide exposure may contribute to ADHD, study finds - 2 views
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This is a potentially interesting idea - especially in a farming region. Would you find a higher rate of ADHD cases in an area where pesticide use was more prevalent?
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"Previous studies have shown that exposure to some organophosphate compounds cause hyperactivity and cognitive deficits in animals,"
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This is super interesting, but I wouldn't be sure about how to go about testing it. Having ADHD is a "private" medical condition - so would you have to ask for volunteers? If you do, they aren't chosen at random. Also, how do you test urine for those compounds? Could this study be recreated with mice?
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It seems like a pretty far stretch to think that pesticides contribute to ADHD. In my opinion, it is more genetic or a result of the environment (stress, tension, etc.), not chemicals floating around.
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Oh - no - it is entirely possible. Chemicals in the environment can have incredibly nasty side effects - and pesticides aren't just floating around - they are often on your fruits and vegetables. Scientists think birth control is causing male fish to develop eggs in their testes - trace amounts in the water from wastewater treatment plants. This actually is quite possible!!
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Oh - and have you ever smelled the "smell" when you cross the river on 229? I can smelll the chemicals (fertilizers/pesticides) from the industries downtown - as far north as the avenue near Lafayette. You have chemical traces in your hair...etc :)
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Fair Trade at Plant Roots | The Scientist - 1 views
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I never realized that I assumed this with symbiotic organisms as well. For example, I assumed that coral, being the larger organism, "controlled" the symbiotic relationship. I wonder if this is true for other symbiotic creatures, like green hydra?
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Heike Bücking, a professor at South Dakota State University, and her team grew the legume Medicago truncatula with three species of mycorrhizal fungi that contribute different levels of phosphorous to the plant. Over the span of a day, the researchers saw that the most generous species received the highest levels of carbon in return, suggesting the plants somehow monitor their nutrient intake and reward their fungal partners accordingly.
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n another experiment, the researchers grew carrot roots with a single fungal species, but supplemented the petri dish with different levels of phosphorous. In this case, the same balance developed: those fungi with the most phosphorous to give received the most carbon in return.
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This really seems highly feasible - I can almost envision the setup right now - different dishes with different nutrient amounts available - just not sure how to measure carbon output.
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Good ruminations or bad ruminations in the depressed brain? - 0 views
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With my brother, his mind and mood become overwhelmed when 'ruminating.' He often will be in a perfectly good mood, then will be struck by a bad memory/thought and will suddenly be in a whirl-wind of anguish and anger. Is it like that for all people with ADHD? Does something about having ADHD make it worse?
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Leaving anger on the field: Statistics show that sports help ease aggression in boys - 1 views
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Aha. Similar to my exercise-happiness idea. 'Sports participation is also beneficial to.... behavioral well-being.' In my opinion, yes, it is.
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I know exercising releases endorphins....on a personal note...I feel more mentally healthy when I exercise.
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I do, too. I know there's been tons of studies/articles that have said exercise makes people happier, but is it something else? Breaking routine? Being outside? And what else releases endorphins?
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"We set out to determine whether sports training would have a positive impact on these children by lowering aggression, and how this result can be achieved,"
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Girls had a much weaker response to sports programming than their male classmates,
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Why is this response so much less? Do females really not suffer from aggression problems? How do they know?
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girls may not suffer from as much (open) aggression in boys, but they probably hold more inside.
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That's an interesting observation - any evidence about girls holding in aggression?
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Only one In five Medicaid-covered kids in Ohio finish antidepressant treatment - 2 views
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you don't have to pay to exercise! the other study found 30% were no longer depressed.
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This population is very vulnerable," Fontanella said. "Not only do they have to deal with poverty and other psychosocial issues, but also issues commonly associated with poverty, such as transportation limitations, single-parent households and unemployment. All this makes them even more vulnerable to receiving not just a poor quality of care, but poor access to mental health care."
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So this is clearly asserting that environmental factors can contribute to depression (i.e. - not necessarily genetic)
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Okay, so ruling out genetics for a moment... many times we say that a person is so much like their mother/father. If their mother was emotional/self-destructive, then perhaps those habits/characteristics lodged themselves in the child's brains and re-emerge when THEY become parents---all because of their environment as children. The depression would be a result of seeing their parents depressed.
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Children's personalities linked to their chemical response to stress - 1 views
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How do we deal with stress? and is it healthy? --What triggers anger/aggression? what triggers angry rampages especially in those with ADHD? What upsets them?
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That's an interesting idea - is that a current belief in psychology - "one healthy way of being?"
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When the researchers exposed the children to a mildly stressful simulated telephone argument between their parents, distinct patterns of hormonal reactions emerged. Children exposed to high levels of interparental aggression at home showed different reactions to the telephone quarrel. Doves with parents who fought violently produced elevated levels of cortisol, a hormone that is thought to increase a person's sensitivity to stress. Hawks from such stressful home environments put the breaks on cortisol production, which is regarded as a marker for diminishing experiences of danger and alarm.
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Wow - it is interesting to actually back up an idea that seems to be almost "common sense" with actual data. It DOES make sense that children who are placed into stressful situations more frequently would have different physiological reactions than those who are not placed into those situations.
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have you heard of the study in which kids were separated from their mothers and introduced to other women? Depending on their relationship with their mother, they reacted in different ways. If they're stressed at home... would they be happy to get away from their mother?
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Children's Personalities Linked to Their Chemical Response to Stress
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Always realize that when you're looking at the intersection of these two elements: human subjects & chemicals... your chances for authentic research are limited. Perhaps impossible. That does NOT mean this topic cannot lead to authentic student research... it just means that you have to work to distill some element of this topic down... and transfer it to another topic/test subject/scale, etc.
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Is your kid a "dove" -- cautious and submissive when confronting new environments, or perhaps you have a "hawk"
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What does this dichotomy have, if anything, in common with the similarly-named dichotomy between political "hawks" and "doves?" I remember as a kid, the first time I heard the term was in elementary school when my Dad asked why I thought I was such a "hawk" ... interested in war, weapons, battles, etc. Funny today how much of a "dove" I would be seen to be in a political sense. I wonder if one could look for correlations between those two facets of human behavior.
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Substance in tangerines fights obesity and protects against heart disease, research sug... - 0 views
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studied the effects of a flavonoid in tangerines called Nobiletin.
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I wonder if this is found in all citrus fruits? If so, others could be tested like oranges, lemons, etc
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The second group of mice, fed the exact same diet but with Nobiletin added,
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I wonder if they were just fed the compound, or if they were fed it from tangerines? How much were they given? Would you get the effect from eating tangerines?
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Mice became much more sensitive to the effects of insulin. Nobiletin was shown to prevent the buildup of fat in the liver by stimulating the expression of genes involved in burning excess fat, and inhibiting the genes responsible for manufacturing fat.
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Repeated Regeneration | The Scientist - 1 views
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Absolutely... this is a difficult, but super interesting study model I have had student work with before. Green hydra still amaze me and are a fantastic model organism for mutualism, etc...
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Another good model organism for regeneration (and perhaps a better one for that specific focus) is Lumbriculus.
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With a cohort of 12 animals, each an estimated 14 years old when captured, Eguchi began systematically removing the lenses from the eyes of the newts, a rapidly regenerating organ.
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I had no idea this was possible. This would be very difficult to do in our lab due to vertebrate guidelines.
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about 5 months—throughout all 18 repetitions of the procedure, demonstrating that there is no delay in or slowing of the process of lens regeneration over time or through repeated regeneration.
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Interesting - I know scientists wonder about this topic in humans - especially in regard to cell division/aging.
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Chronic high cholesterol diet produces brain damage - 1 views
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<2.5% have a genetic disposition
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Wow - I had no idea that we knew for certain that there was a genetic disposition toward developing alzheimers.
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The aim of the study led by Humpel was to study the effects of hypercholesterolemia in adult rats. Male 6 months old Sprague Dawley rats were fed with normal food (controls) or with a special 5% cholesterol-enriched diet (hypercholesterolemia). After 5 months animals were tested for behavioral impairments and pathological markers similar to those found in the brains of patients with Alzheimer's diseas
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The set-up here appears easy, but I have no idea how they would actually test for symptoms of Alzheimer's disease?
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High Cholesterol Diet Produces Brain Damage
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What is the role of cholesterol in humans? Don't be fooled into thinking it is an evil chemical. It has a very important and complex role. Further, (and what might be tougher to find) what is the role of cholesterol in other animals? Do non mammals even produce cholesterol? More importantly from a student research perspective... do invertebrates produce or use cholesterol?
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Positive teens become healthier adults: Adolescents with a sunny outlook on life may ha... - 1 views
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It looks as if they took an initial survey, and then they tested that group again in 96 and 01.
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The Fattest States List | Gallup Poll & State Obesity Rates | LiveScience - 0 views
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Couldn't there be other outside factors that could throw this research off? Did they take an even number from each state? And of those people were there any that had certain circumstances where they couldn't help but gain weight? Also, why January to June? That's coming out of the "winter depression" where a lot of people don't exercise.
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Very good points! This is a really good example of an article someone would possibly read in the general public, and they would just flat out believe it, never considering whether or not the science is solid. A BMI of 30 is pretty high, although BMI is not a very accurate way to measure obesity either.
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South Carolina: 30.6 percent Louisiana: 31.2 percent Mississippi: 32.1 percent Delaware: 33.6 percent West Virginia: 34.3 percent
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It seems like this research is suggesting that people towards the east coast are more obese. How could this be? Maybe they have a lot of Restaurants with unhealthy foods. it could be possible that they don't have a lot of orchards or state grown foods? I don't know much about these states. But, maybe they don't grow their own foods and have a lot of imports?
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Colorado: 20.1 percent Utah: 21.6 percent Connecticut: 21.7 percent California: 22.1 percent Rhode Island: 22.1 percent Massachusetts: 22.6 percent New Jersey: 22.6 percent
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Healthy Body Composition www.DrDavidWilliams.comNew TonaLean-3 Can Help You Maintain Heal
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Now the skinniest people are here. There's a few from the west coast, but there are also a few from the northern east coast like Rhode Island, Connecticut, and New Jersey. I find it strange that the obese are in the south and the skinnier are in the north. Maybe it's the environment and people care more about their appearances in the North while in the South there are southern Belles and farmers? I really don't know much about these states or why one side is more obese than the other. it would be interesting to find out..
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It would be interesting - there is definitely the perception that people don't eat as well in the South (lots of fried food, sweet tea, barbecue, etc. Not sure if those ideas are actually supported or not.
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