Sentences with phrase «by several animal studies»

Not exact matches

The studies suggested that most infections resulting from animal bites are «polymicrobial,» caused by several different bacteria or other germs.

The study, led by Dr Allan Debelle and Dr Rhonda Snook in the University's Department of Animal and Plant Sciences, looked at the mating patterns of fruit flies after they evolved for 100 generations in either polyandrous populations (where several males have to compete for a single female) and monogamous populations (where each male has access to only one female).

«Several studies have measured parasite infection in urban animals, but surprisingly we are the first to measure whether wild birds living in a city were more or less infected by a parasite and a pathogen, as well as how these infections are linked to their physiological stress,» said Mathieu Giraudeau, a post-doctoral associate who previously worked with Kevin McGraw, ASU associate professor with the School of Life Sciences.

Still used today by some companies, the test involves applying a small amount of the substance under study to an animal's eye or skin for several hours, and then observing whether or not irritation occurs over the following week or two.

On the other hand, both species has been considered as different by several studies conducted with these animals.

Over several years studying an elephant seal colony in Año Nuevo State Park, California, the researchers were able to recognize many of the individual animals just by the rhythm of their voices, he says.

In the study, the scientists used a type of mouse, called CVN - AD, that they had created several years ago by swapping out a handful of important genes to make the animal's immune system more similar to a human's.

The BUSM researchers believe the data from this study and those reported by others in animal models as well in clinical studies strongly suggest that Avodart may have serious adverse side effects that were not obvious several years ago.

The metabolic analysis of the mice could be combined with clinical assessments, by performing biochemical analysis in blood, plasma, urine and tissues (i.e, lipid and cholesterol content, glycogen content...) and by performing autopsy of the animal at the end of phenotyping study with several tissue collections (i.e, histology, mRNA anlaysis, protein analysis...).

However, studies in several animals have shown that partially suppressing both normal and mutant versions by about 50 % in adults is safe and improves symptoms.

The approval process involves several steps including preclinical laboratory and animal studies, clinical trials for safety and efficacy, filing of a New Drug Application by the manufacturer of the drug, and FDA review and approval of the application.

Several diseases that are defined by chronic inflammation result in significantly increased risks of cancer, such as colon cancer in patients with ulcerative colitis (an inflammatory bowel disease).2, 3 Interestingly, studies show that irritable bowel disease in itself can invoke stress, and as a result, decrease immune function.4 Animal studies have shown that stress alone can exacerbate colitis, 5 connecting the two (which comes first?).

As Masterjohn explains, «The utilization of protein requires vitamin A. Several animal studies have shown that liver reserves of vitamin A are depleted by a high dietary intake of protein, while vitamin A increases in non-liver tissues.

With rudimentary laboratories, one could argue that more was accomplished with regards to the effect of diet on cancer in the former half of the century, as revolutionary researchers like Tannenbaum, Rous, and their colleagues provided us with dozens of animal studies linking diet and cancer by exposing mice to free radical - laden vegetable oils.32, 33 Several decades later, two other researchers, Dayton and Pearce, provided one of the few studies revealing what happens when we give humans vegetable oils and their accompanying free radicals when they randomized men to a corn oil solution and a similar rise in cancer followed.34 It is no surprise that corn oil is often used in animal studies to cause cancer, as the ingestion of damaging free radicals predictably hastens cancer development.35 Furthermore, these scientists were the first to show that fasting, restricting calories, and cutting carbohydrates could lower the chance of cancer in animals exposed to dangerous chemicals and carcinogens.

While it is true that researchers have induced heart disease in some animals by giving them extremely large dosages of oxidized or rancid cholesterol — amounts ten times that found in the ordinary human diet — several population studies squarely contradict the cholesterol - heart disease connection.

A colleague informed him of a startling trend: liver cancer was plaguing affluent Filipinos at a much higher rate than their less - wealthy counterparts — a phenomenon that, despite a slew of other lifestyle differences, Campbell believed was linked to their higher intake of animal protein.1 Bolstering his suspicions, Campbell also learned of a recent study from India showing that a high protein intake spurred liver cancer in rats, while a low protein intake seemed to prevent it.2 Intrigued by this gem of little - known research, Campbell decided to investigate the role of nutrition in cancer growth himself — an endeavor that ended up lasting several decades and producing over one hundred publications (none of which pertained to Fight Club).3

Several of these «risk factors» can be improved by vinegar consumption, but many of the studies were done in animals.

The same phenomenon, by the way, has also been shown in several studies of animals that mate for life.

I was fascinated by nature and the several animals I kept, and from age six I collected and studied butterflies and other insects, never missing the Friday - afternoon bug club facilitated by the local children's librarian.

A study showed that 13 % of bacterial abortions are caused by L. pomona, the most common leptospiral serovar found in horses.3 Aborting mares have been reported to shed leptospires in their urine for periods up to three months and can transmit Leptospira to exposed animals.3 Some horses aborting due to leptospiral infection develop uveitis several weeks to months later.3 Additionally, the aborted fetus is a source of exposure to other horses on the property.

The proposal is one of several developed so far by a countywide study group organized to find solutions to Volusia's animal control problems.

Several studies show longterm health correlates with animal companionship, although the animals were not randomly assigned to the people but rather were chosen by them or their families.

By removing one element from this diet at a time, it is possible to study the effects of these omissions if necessary over several generations of animals.

In humans, both the HPA system and the autonomic nervous system show developmental changes in infancy, with the HPA axis becoming organized between 2 and 6 months of age and the autonomic nervous system demonstrating relative stability by 6 to 12 months of age.63 The HPA axis in particular has been shown to be highly responsive to child - caregiver interactions, with sensitive caregiving programming the HPA axis to become an effective physiological regulator of stress and insensitive caregiving promoting hyperreactive or hyporeactive HPA systems.17 Several animal models as well as human studies also support the connection between caregiver experiences in early postnatal life and alterations of autonomic nervous system balance.63 - 65 Furthermore, children who have a history of sensitive caregiving are more likely to demonstrate optimal affective and behavioral strategies for coping with stress.66, 67 Therefore, children with histories of supportive, sensitive caregiving in early development may be better able to self - regulate their physiological, affective, and behavioral responses to environmental stressors and, consequently, less likely to manifest disturbed HPA and autonomic reactivity that put them at risk for stress - related illnesses such as asthma.