Showing 20 articles starting at article 1
Published New study links contraceptive pills and depression (via sciencedaily.com) Original source
Women who used combined contraceptive pills were at greater risk of developing depression than women who did not, according to a new study. Contraceptive pills increased women's risk by 73 per cent during the first two years of use.
Published How does dopamine regulate both learning and motivation? (via sciencedaily.com) Original source
A new study brings together two schools of thought on the function of the neurotransmitter dopamine: one saying that dopamine provides a learning signal, the other saying that dopamine drives motivation.
Published Further link identified between autoimmunity and schizophrenia (via sciencedaily.com) Original source
Links have been reported between schizophrenia and proteins produced by the immune system that can act against one's own body, known as autoantibodies. Researchers have now identified autoantibodies that target a 'synaptic adhesion protein' in a subset of patients with schizophrenia. When injected into mice, the autoantibodies caused many schizophrenia-related changes.
Published Low sexual satisfaction linked to memory decline later in life (via sciencedaily.com) Original source
Low sexual satisfaction in middle age may serve as an early warning sign for future cognitive decline, according to a new study. The study, which tracked associations between erectile function, sexual satisfaction and cognition in hundreds of men aged 56 through 68, found that declines in sexual satisfaction and erectile function were correlated with future memory loss.
Published Vitamin D alters developing neurons in the brain's dopamine circuit (via sciencedaily.com) Original source
Neuroscientists have shown how vitamin D deficiency affects developing neurons in the brain's dopamine circuit, which may lead to the dopamine dysfunction seen in adults with schizophrenia.
Published Tuberculosis disease intensifies HIV antibody response in people with HIV (via sciencedaily.com) Original source
New research found that people living with HIV that have had pulmonary tuberculosis had broader and more potent HIV antibody responses and differences in HIV sequences predicted to be antibody resistant as compared to those without suspected or documented tuberculosis.
Published A special omega-3 fatty acid lipid will change how we look at the developing and aging brain (via sciencedaily.com) Original source
Scientists have found a lipid transporter crucial to regulating the cells that make myelin, the nerve-protecting sheath.
Published New genetic target for male contraception identified (via sciencedaily.com) Original source
Discovery of a gene in multiple mammalian species could pave the way for a highly effective, reversible and non-hormonal male contraceptive for humans and animals. Researchers identified expression of the gene, Arrdc5, in the testicular tissue of mice, pigs, cattle and humans. When they knocked out the gene in mice, it created infertility only in the males, impacting their sperm count, movement and shape.
Published Smells influence metabolism and aging in mice (via sciencedaily.com) Original source
Exposure to female odors and pheromones causes weight loss and extend the life spans of mice, which may have implications for humans, researchers have found. While it was already known that sensory cues in humans and animals influence the release of sex hormones, this study shows that these cues could have more wide-spread physiological effects on metabolism and aging.
Published A readily available dietary supplement may reverse organ damage caused by HIV and antiretroviral therapy (via sciencedaily.com) Original source
MitoQ, a mitochondrial antioxidant that is available to the public as a diet supplement, was found in a mouse study to reverse the detrimental effects that HIV and antiretroviral therapy (ART) have on mitochondria in the brain, heart, aorta, lungs, kidney and liver.
Published High infant mortality rates and global human population rise (via sciencedaily.com) Original source
New research showing high infant mortality rates are contributing to an incessant rise of the global human population supports arguments for greater access to contraception and family planning in low- and middle-income nations.
Published The drug fasudil is found to reverse key symptoms of schizophrenia in mice (via sciencedaily.com) Original source
Researchers used the drug fasudil to restore neurons and improve methamphetamine-induced cognitive dysfunction in a mouse model of schizophrenia.
Published Abnormal 12-hour cyclic gene activity found in schizophrenic brains (via sciencedaily.com) Original source
Researchers present the first evidence of 12-hour cycles of gene activity in the human brain. The study also reveals that some of those 12-hour rhythms are missing or altered in the postmortem brains of patients with schizophrenia.
Published Call to address women's reproductive needs holistically (via sciencedaily.com) Original source
Women's reproductive needs should be considered holistically by considering pregnancy prevention and pregnancy preparation at the same time, finds a new study.
Published COVID vaccines also help protect HIV patients, study finds (via sciencedaily.com)
Researchers have found that people infected with HIV who receive antiretroviral therapy form antibodies against Sars-Cov-2 after being vaccinated against COVID with mRNA vaccines. Their immune response to the vaccination is, however, less strong than that of healthy people. A third vaccination reduces this gap.
Published Scientists link rare genetic phenomenon to neuron function, schizophrenia (via sciencedaily.com) Original source
Using state-of-the-art whole-genome sequencing and machine learning techniques, researchers conducted one of the first and the largest investigations of tandem repeats in schizophrenia, elucidating their contribution to the development of this devastating disease.
Published ADHD medication for amphetamine addiction linked to reduced risk of hospitalization and death, study finds (via sciencedaily.com) Original source
The ADHD medication lisdexamfetamine was associated with the lowest risk of hospitalization and death in people with amphetamine addiction, when medications generally used among persons with substance use disorders were compared, according to a new study.
Published Converging and diverging immune factors that may predispose people to HIV and HSV (via sciencedaily.com) Original source
Investigators analyzed longitudinal samples of cervical and serum biomarker levels for immune activation, before and after subjects acquired HSV-2. They found that altered levels of specific biomarkers in the mucosa and serum were associated with HSV-2 acquisition only, while others overlapped with biomarkers and combinations predictive of HIV-1 acquisition.
Published Inflammation amplifies the effect of genetic risk variants for schizophrenia (via sciencedaily.com) Original source
Schizophrenia patients have fewer connections between nerve cells. This is believed to be caused by genetic risk variants leading to an excessive elimination of nerve cell connections by the immune cells of the brain. Researchers now report that the levels of protein from the relevant risk gene are elevated in first-episode patients and that inflammation further increases the expression of the risk gene.
Published Three-dose hepatitis B vaccine regimen protects people with HIV (via sciencedaily.com) Original source
A three-dose course of the hepatitis B vaccine HEPLISAV-B fully protected adults living with HIV who had never been vaccinated against or infected with the hepatitis B virus (HBV), according to new study.