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Annals Of Internal Medicine Tip Sheet For June 16, 2009, Issue
Calcium Supplementation Has No Weight-loss Benefit for Obese Patients
diet pills
Raptor Pharmaceuticals Doses First Patient In Phase 2b Clinical Trial Of DR Cysteamine For Cystinosis
Raptor Pharmaceuticals Corp. ("Raptor" or the "Company") (OTC Bulletin Board: RPTP), announced that it has dosed the first patient in its Phase 2b clinical trial, conducted in collaboration with the University of California, San Diego ("UCSD"), to evaluate Raptor"s proprietary delayed-release cysteamine bitartrate ("DR Cysteamine") capsules in nephropathic cystinosis ("cystinosis"), a rare genetic lysosomal storage disease. Under Raptor"s open Investigational New Drug application ("IND"), UCSD is performing the Raptor-sponsored trial at its General Clinical Research Center.
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In Mouse Study Immune Cells Ameliorate Hypertension-Induced Cardiac Damage
Researchers in Berlin, Germany have found that a specific type of immune cell, the regulatory T lymphocyte (Treg) plays an important role in hypertension-induced cardiac damage. The injected Treg that they harvested from donor mice into recipient mice were infused with angiotensin II, a blood pressure-raising peptide. The Tregs had no influence on the blood pressure response to angiotensin II. Nonetheless, cardiac enlargement, fibrosis, and inflammation was sharply reduced by Treg treatment. Furthermore, the tendency to develop abnormal heart rhythms that could lead to sudden cardiac death was also reduced. Dr. Heda Kvakan and Dr. Dominik N. MÃøller at the Experimental and Clinical Research Center at the Max DelbrÃøck Center do not intend Treg as a therapy. However, a better understanding of how the immune system fits into hypertension-induced organ damage could result from these studies (Circulation, Vol. 119, No. 22, June 9, 2009, 2904-2912 ).*
Nutrition

Histamine Affects Alcohol-related Behaviour

The histamine-3 receptor is important in terms of alcohol-related behaviour, and a drug affecting that receptor may have qualities that alter alcohol-related behaviour. This appears in the study headed by Pertti Panula entitled "Tuberomamillary nucleus neurons, histamine and H3 receptor in hypothalamic regulation of alcohol addiction" which is part of the Substance Use and Addictions research programme of the Academy of Finland. "Whether these histamine-3 receptor drugs help in the treatment of human alcoholism will probably be clear when the results of the currently ongoing clinical trials become public. The drugs are currently being tested for the treatment of conditions such as observation disorders, sleep disorders and narcolepsy," says Professor Panula. In addition to the well-known dopamine and serotonin, neurotransmitters that are important to the functioning of the brain also include histamine, which is better known for the regulation of allergies and stomach functioning. The histamine system of the brain is important in the regulation of the sleep-waking rhythm. There is also an extensive histamine system in the human brain. In Professor Panula"s previous studies it was observed that the brain histamine content of a rat population that liked to drink alcohol was higher compared with other rat populations. The alcohol consumption of these rats was reduced by giving the rats an agent that blocks the new histamine-3 receptor that was discovered in the studies. These studies showed that the histamine system of the brain is part of the mechanism that regulates alcohol consumption. The latest studies used mice in whose brain the histamine producing enzyme and, consequently, histamine is completely lacking. These mice did not become livelier after receiving alcohol as did the mice in the control group. On the other hand, the rewarding pleasure effect of alcohol was stronger in the mice lacking histamine compared with normal mice. It was also observed in the study that the effects of alcohol that cause liveliness and pleasure changed noticeably when a histamine-3 receptor blocker was used. The results suggest that, in addition to the use of alcohol, transmitter histamine also contributes to the transmission of the stimulating and pleasing effect of alcohol in the brain. Suomen Akatemia (Academy of Finland)


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