Fourteen (33%) of 43 men hospitalized for alcohol abuse showed abnormal cortisol levels at 4 pm, 17 hours after administration of 1 mg of dexamethasone (median, five days after admission). Most (but not all) of these nonsuppressors showed multiple signs of alcoholic physical deterioration; there may be more than one mechanism by which alcohol abuse can lead to an abnormal result of this test. Suppressors and nonsuppressors reported similar alcohol consumption, symptoms of depression, and occurrence of depression among close relatives. Only two patients (5%) showed abnormal cortisol levels at 8 am, nine hours after administration of dexamethasone. These results suggest that, as a screen for primary depressive illness among recently abstinent alcohol abusers, the 4 pm cortisol level is not specific enough, but the 8 am level might be useful in patients who have no alcoholic relatives.
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http://dx.doi.org/10.1001/archpsyc.1982.04290110061010 | DOI Listing |
Mol Psychiatry
January 2025
Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA.
Age-related dopamine (DA) neuron loss is a primary feature of Parkinson's disease. However, whether similar biological processes occur during healthy aging, but to a lesser degree, remains unclear. We therefore determined whether midbrain DA neurons degenerate during aging in mice and humans.
View Article and Find Full Text PDFJAMA Netw Open
January 2025
Laboratory of NeuroImaging, National Institute on Alcohol Abuse and Alcoholism, Bethesda, Maryland.
Importance: Cannabis use has increased globally, but its effects on brain function are not fully known, highlighting the need to better determine recent and long-term brain activation outcomes of cannabis use.
Objective: To examine the association of lifetime history of heavy cannabis use and recent cannabis use with brain activation across a range of brain functions in a large sample of young adults in the US.
Design, Setting, And Participants: This cross-sectional study used data (2017 release) from the Human Connectome Project (collected between August 2012 and 2015).
Forensic Sci Med Pathol
January 2025
Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
Nitrous oxide (NO) abuse is becoming increasingly popular worldwide. Moreover, the use of NO combined with other substances, such as alcohol, is also common. Accidental deaths associated with NO abuse are rare in forensic practice, with most fatal cases involving continuous inhalation equipment or exposure in a confined space.
View Article and Find Full Text PDFCase Rep Neurol Med
November 2024
Arizona College of Osteopathic Medicine, Midwestern University, Glendale, Arizona, USA.
Osmotic demyelination syndrome (ODS) is a rare complication associated with rapid sodium changes, typically encountered in patients with severe hyponatremia. ODS in patients with normonatremia (ODSIN) is less recognized. We describe a patient with MRI-detected ODSIN following neurotrauma and reviewed the relevant literature.
View Article and Find Full Text PDFAm J Physiol Cell Physiol
January 2025
Department of Kinesiology and Nutrition, University of Illinois Chicago, Chicago, IL, USA.
Hepatic lipotoxicity, resulting from excessive lipid accumulation in hepatocytes, plays a central role in the pathogenesis of various metabolic liver diseases. Despite recent progress, the precise mechanisms remain incompletely understood. Employing excessive exposure to palmitate in hepatocytes as our primary experimental model and mice studies, we aimed to uncover the mechanisms behind hepatic lipotoxicity, thereby developing potential treatments.
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