Plasma amino acid (AA) profiles were determined in patients with bipolar affective disorders before and during treatment with lithium (Li) carbonate. After 90 days of Li intake, there were moderately (20-60%) but significantly decreased plasma levels of isoleucine, leucine, and valine. After 150 days of Li intake, the plasma lysine was also significantly decreased (12%). No significant changes in plasma levels were noted for any of the other 17 AAs that were studied. Since isoleucine, leucine, and valine are important competitors of tryptophan uptake at the blood-brain barrier, these observations suggest a possible mechanism for the therapeutic activity of Li, i.e., the enhancement of brain serotonin levels.
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http://dx.doi.org/10.1016/0165-1781(83)90136-1 | DOI Listing |
Kidney360
November 2024
Department of Internal Medicine, Division of Nephrology, University of Michigan, Ann Arbor, MI, USA.
Background: Focal segmental glomerulosclerosis (FSGS) and treatment-resistant minimal change disease (TR-MCD) are heterogeneous disorders with subgroups defined by distinct underlying mechanisms of glomerular and tubulointerstitial injury. A non-invasive urinary biomarker profile has been generated to identify patients with intra-kidney tumor necrosis factor (TNF)-activation and to predict response to anti-TNF treatment. We conducted this proof-of-concept, multi-center, open-label clinical trial to test the hypothesis that in patients with FSGS or TR-MCD and evidence of intra-renal TNF activation based on their biomarker profile, short-term treatment with adalimumab would reverse the elevated urinary excretion of MCP-1 and TIMP-1.
View Article and Find Full Text PDFJ Bone Miner Res
January 2025
Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.
Bone mineral density (BMD), an important marker of bone health, is regulated by a complex interaction of proteins. Plasma proteomic analyses can contribute to identification of proteins associated with changes in BMD. This may be especially informative in stages of bone accrual and peak BMD achievement (i.
View Article and Find Full Text PDFPLoS One
January 2025
Chemistry and Biochemistry, University of St. Thomas, Houston, TX, United States of America.
Cardiovascular disease (CVD) remains the leading cause of morbidity and mortality globally, with oxidative stress playing a pivotal role in its progression. Free radicals produced via oxidative stress contribute to lipid peroxidation, leading to subsequent inflammatory responses, which then result in atherosclerosis. Antioxidants inhibit these harmful effects through their reducing ability, thereby preventing oxidative damage.
View Article and Find Full Text PDFJ Physiol
January 2025
Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark.
Synaptic vesicle (SV) trafficking toward the plasma membrane (PM) and subsequent SV maturation are essential for neurotransmitter release. These processes, including SV docking and priming, are co-ordinated by various proteins, such as SNAREs, Munc13 and synaptotagmin (Syt), which connect (tether) the SV to the PM. Here, we investigated how tethers of varying lengths mediate SV docking using a simplified mathematical model.
View Article and Find Full Text PDFCell Biochem Biophys
January 2025
Department of Intensive Care Unit, Taizhou First People's Hospital, Taizhou, 318020, ZJ, China.
This study aims to explore the efficacy of neutrophil membrane nanovesicles (NMNVs) in the treatment of acute kidney injury caused by sepsis (S-AKI). Moreover, its effects on renal function indicators in plasma [creatinine (CREA), urea (UREA)], oxidative stress factor [malondialdehyde (MDA)], inflammatory factor [myeloperoxidase (MPO), histone H4 (H4), and macrophage inflammatory protein-2 (MIP-2)] are studied. Sixty SPF grade adult male Wistar rats in a healthy state under natural infection were randomly divided into blank, LSP, and experimental groups, with 20 rats in each group.
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