AI Article Synopsis
Article Abstract
Monoiodotyrosine is a tyrosine hydroxylase inhibitor. Ingestion of one gram monoiodotyrosine caused a 10,000-fold increase of serum monoiodotyrosine from basal levels of 0.69 +/- 0.20 nmol/l to a peak of 10.6 +/- 1.7 mumol/l in women and 7.1 +/- 2.3 mumol/l in men 30 min later, and the t1/2 was 45 min. Monoiodotyrosine stimulated PRL to a peak of 170 +/- 51 micrograms/l in women and 90 +/- 6 micrograms/l in men 30 min after the monoiodotyrosine peak, or 60 min after the ingestion. Other anterior pituitary hormones were unchanged. Dopamine infusion or L-dopa pretreatment attenuated the monoiodotyrosine effect. TRH exaggerated the PRL peak, and chlorpromazine did not increase but prolonged the hyperprolactinemia. These results suggest that dopamine synthesis inhibition may be the mechanism of PRL stimulation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1530/acta.0.1240251 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cholecystokinin (CCK) Is a Mediator Between Nutritional Intake and Gonadal Development in Teleosts.
Cells
January 2025
Hubei Hongshan Laboratory, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
Nutritional intake is closely linked to gonadal development, although the mechanisms by which food intake affects gonadal development are not fully understood. Cholecystokinin (CCK) is a satiety neuropeptide derived from the hypothalamus, and the present study observed that hypothalamic CCK expression is significantly influenced by food intake, which is mediated through blood glucose levels. Interestingly, CCK and its receptors were observed to exhibit a high expression in the hypothalamus-pituitary-gonad (HPG) axis of grass carp (), suggesting that CCK is potentially involved in regulating fish reproduction through the HPG axis.
View Article and Find Full Text PDFRole of Hypothalamus in Acupuncture's Effects.
Brain Sci
January 2025
Department of Physiology, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea.
The significant correlation between ancient medicinal practices and brain function marks a revolutionary frontier in the field of neuroscience. Acupuncture, a traditional oriental medicine, can affect brain regions, such as the hypothalamus, anterior cingulate, posterior cingulate, and hippocampus, and produces specific therapeutic effects, such as pain relief, suppression of hypertension, and alleviation of drug addiction. Among the brain regions, the hypothalamus, a small yet critical region in the brain, plays a pivotal role in maintaining homeostasis by regulating a wide array of physiological processes, including stress responses, energy balance, and pain modulation.
View Article and Find Full Text PDFEfficacy of cartilage-targeted IGF-1 in a mouse model of growth hormone insensitivity.
Front Endocrinol (Lausanne)
January 2025
Section on Growth and Development, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institute of Health, Bethesda, MD, United States.
Recombinant human IGF-1 is used to treat severe primary IGF-1 deficiency, but this treatment requires twice-daily injection, often does not fully correct the growth deficit, and has important off-target effects. We therefore sought to target IGF-1 to growth plate cartilage by generating fusion proteins combining IGF-1 with single-chain human antibody fragments that target matrilin-3, a cartilage matrix protein. We previously showed that this cartilage-targeting IGF-1 fusion protein (CV1574-1) promoted growth plate function in a GH-deficient (lit) mouse model.
View Article and Find Full Text PDFCushing syndrome.
Nat Rev Dis Primers
January 2025
Endocrine Division, Department of Medicine, Centre hospitalier de l'Université de Montréal (CHUM), Montreal, Québec, Canada.
Cushing syndrome (CS) is a constellation of signs and symptoms caused by excessive exposure to exogenous or endogenous glucocorticoid hormones. Endogenous CS is caused by increased cortisol production by one or both adrenal glands (adrenal CS) or by elevated adrenocorticotropic hormone (ACTH) secretion from a pituitary tumour (Cushing disease (CD)) or non-pituitary tumour (ectopic ACTH secretion), which stimulates excessive cortisol production. CS is associated with severe multisystem morbidity, including impaired cardiovascular and metabolic function, infections and neuropsychiatric disorders, which notably reduce quality of life.
View Article and Find Full Text PDFNovel Pharmacologic Treatments of Female Sexual Dysfunction.
Clin Obstet Gynecol
March 2025
Department of Psychiatry & Neurobehavioral Sciences.
This review evaluates pharmacologic treatments for female sexual dysfunction (FSD), focusing on hypoactive sexual desire disorder (HSDD). We provide clinically relevant applications for Food and Drug Administration (FDA)-approved medications (flibanserin and bremelanotide) and investigational therapies (Lorexys and testosterone combinations). Detailed study outcomes, safety profiles, and clinical strategies guide clinicians in appropriate diagnosis, patient selection, expectation setting, side effect management, and patient education, improving treatment outcomes and patient satisfaction.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!