Human physiology is the science of the mechanical, physical, and biochemical functions of humans in good health, their organs, and the cells of which they are composed. The principal level of focus of physiology is at the level of organs and systems. Most aspects of human physiology are closely homologous to corresponding aspects of animal physiology, and animal experimentation has provided much of the foundation of physiological knowledge. Anatomy and physiology are closely related fields of study: anatomy, the study of form, and physiology, the study of function, are intrinsically tied and are studied in tandem as part of a medical curriculum.
Autosomal-dominant polycystic kidney disease (ADPKD) is one of the most common genetic disorders, affecting one in every 1,000 people and responsible for up to ten percent of patients on dialysis worldwide. The disease is characterized by the development of cysts that lead to progressive kidney failure and necessitate dialysis or a kidney transplant in most patients aged around fifty. Moreover, the persistent cyst growth causes high blood pressure and painful complications.
During the early developmental stages of vertebrates-animals that have a backbone and spinal column, including humans-cells undergo extensive rearrangements, and some cells migrate over large distances to populate particular areas and assume novel roles as differentiated cell types.
Weill Cornell Medical College announced today that it is a Grand Challenges Explorations winner, an initiative funded by the Bill & Melinda Gates Foundation.
The coming crisis for society caused by millions of people who are seriously overweight will be discussed at a University of Greenwich public lecture on 28 November.
A stroke is a sudden interruption of blood flow to the brain which deprives the brain of oxygen and nutrients. Approximately two millions brain cells die each minute during a stroke. This can lead to brain damage, physical and mental disability and death.
A new study conducted by researchers at the University of Cordoba links moderate physical activity in males with better hormone levels and sperm characteristics that favour reproduction compared to sedentary men.
Scientists at The Scripps Research Institute (TSRI) have discovered the first selective inhibitors of an important set of enzymes. The new inhibitors, and chemical probes based on them, now can be used to study the functions of enzymes known as diacylglycerol lipases (DAGL), their products, and the pathways they regulate.
As men and women age, increasing quantities of fat tissue inevitably take up residence in skeletal muscle. A small study of older and younger men conducted at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University suggests that a build-up of a fat molecule known as ceramide might play a leading role in muscle deterioration in older adults.
New research shows a simple reason why even the most intelligent, complex brains can be taken by a swindler's story - one that upon a second look offers clues it was false.
Two proteins have a unique bond that enables brain receptors essential to learning and memory to not only get and stay where they're needed, but to be hauled off when they aren't, researchers say.
Celldex Therapeutics, Inc. today announced positive results demonstrating promising clinical effects in a Phase 1 study of CDX-1401 in solid tumors in combination with the toll-like receptor (TLR) agonists resiquimod and/or Poly ICLC.
Daily sedative interruption of mechanically ventilated patients in intensive care units does not reduce the time they are on ventilation or improve their clinical outcomes, report researchers in JAMA.
More rheumatologists are embracing musculoskeletal ultrasound (MSUS) to diagnose and manage rheumatic diseases. In response, the American College of Rheumatology (ACR) assembled a task force to investigate and determine best practices for use of MSUS in rheumatology practice. The resulting scenario-based recommendations, which aim to help clinicians understand when it is reasonable to integrate MSUS into their rheumatology practices, now appear online in Arthritis Care & Research.
The ability of embryonic stem cells to differentiate into different types of cells with different functions is regulated and maintained by a complex series of chemical interactions, which are not well understood. Learning more about this process could prove useful for stem cell-based therapies down the road. New research from a team led by Carnegie's Yixian Zheng zeroes in on the process by which stem cells maintain their proper undifferentiated state.
Using peer mentors to enhance school-day physical activity in elementary aged students has been given an A+ from Nova Scotia researchers.
Clinical drug trials are a vital part of pharmaceutical manufacturers gaining approval for use by the U.S. Food and Drug Administration. A Commentary scheduled for publication in The Journal of Pediatrics assesses the issues surrounding the lack of clinical trials on medications used by children, most notably neonates, and how drug manufacturers and academic researchers could work together to create clinical trials that would benefit this underrepresented population.
Researchers at the National Heart Centre Singapore (NHCS) have successfully created a human heart cell model of arrhythmogenic right ventricular cardiomyopathy (ARVC), an inherited heart muscle disorder which puts one at high risk of developing life-threatening arrhythmias and sudden cardiac death.
Most healthy cells rely on a complicated process to produce the fuel ATP. Knowing how ATP is produced by the cell's energy storehouse - the mitochondria -- is important for understanding a cell's normal state, as well as what happens when things go wrong, for example in cancer, cardiovascular disease, neurodegeneration, and many rare disorders of the mitochondria.
Joint research between the University of Michigan and the Argentina-based National Council of Science and Technology (CONICET) has shed light on one of the most frustrating mysteries of weight loss - why the weight inevitably comes back.
In an early-stage breakthrough, a team of Northwestern University scientists has developed a new family of compounds that could slow the progression of Parkinson's disease.
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