Neurometabolic Disorders Could Contribute to Depression

Impairments in the production of neurotransmitters may lead to depression in some patients, preliminary results show, opening new avenues for research.

In 2002, psychiatrist Lisa Pan, a depression and suicide prevention researcher at the University of Pittsburgh Medical Center (UPMC), met Kyle, a 19-year-old suffering from depression (name altered to preserve confidentiality). He was among the estimated 15 percent of depression patients in the U.S. for whom treatments such as antidepressants or therapy do not help. He “had been through every available treatment” including electroconvulsive therapy, but nothing worked, Pan recalls. “At one time, he was on 17 medications simultaneously.” The teenager had attempted suicide, and doctors determined that he was at risk for similar episodes. The next step for him would be state hospitalization.

Read more: Neurometabolic Disorders Could Contribute to Depression

STAVING OFF DEPRESSION: Deficiencies in key compounds that help the body make
neurotransmitters may contribute to the intractability of depression in some people
© ISTOCK.COM/JM1366

Source: TheScientist

Male Birth Control Shot Shows Promise

When it comes to birth control methods, women have more options than ever before. However, for men, the choice is limited to condoms, withdrawal, and vasectomy. A new study - published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism - has established that a male birth control shot is effective at preventing pregnancy.

In the last 40 years, studies have demonstrated that reversible hormonal suppression of spermatogenesis - the process of sperm cell development - in men can prevent pregnancies in their female partners, although the commercial development of the product has been stalled.

In previous studies, testosterone management in men demonstrated birth control efficacy comparable with female methods. However, participants had to be given much greater doses than are typically found in the body and the method caused long-term adverse effects in healthy men.

While giving progesterone alongside can reduce the dose of testosterone, there have been few studies that have evaluated the efficacy and safety of such a combination. With 40 percent of all pregnancies worldwide unintended in 2012, better birth control options are required for men.

Read more: Male Birth Control Shot Shows Promise

The male birth control shot may provide more choice for controlling male fertility in the future.

Source: MedicalNewsToday

Amino Acids in Cancer Metabolism and Neuroscience

These Building Blocks Could Be Valuable Tools for Research

Amino acids are important building blocks for protein synthesis and are also intermediary metabolites that fuel biosynthetic reactions, thus playing a dual role in cellular metabolism. Accurate quantification of L-amino acids in body fluids or purified samples may provide valuable information for diagnostic and basic research studies.

Cellular Roles of Amino Acids in Cancer and Neurobiology

Cancer cells have altered metabolism and are known for their metabolic abnormalities. One example is the Warburg effect, in which there is increased glycolytic activity even in the presence of oxygen. Cancer cells depend on a high rate of aerobic glycolysis for continued growth and survival.

Read more: Amino Acids in Cancer Metabolism and Neuroscience

Figure 1. Glutamine and the metabolism of other amino acids as targets for cancer therapy.

[Int J Mol Sci 2015;16:22830–22855; doi:10.3390/ijms160922830]

Source: genengnews

How Fat Becomes Lethal, Even Without Weight Gain

Recent findings have the potential to help scientists better understand a growing class of often fatal metabolic diseases.

Sugar in the form of blood glucose provides essential energy for cells. When its usual dietary source – carbohydrates – is scarce, the body goes into starvation mode and the liver can produce glucose with the aid of fat.

But new research from Johns Hopkins adds to evidence that other tissues can step in to make glucose, too. The research also found that the liver’s role in breaking down fats is vital to protect the organ from a lethal onslaught of fat.

Read more: How Fat Becomes Lethal, Even Without Weight Gain

Source: scothealthcare