Search results for "HORMONES"
showing 10 items of 1169 documents
Diagnostic and prognostic values of B-type natriuretic peptides (BNP) and N-terminal fragment brain natriuretic peptides (NT-pro-BNP).
2012
Abstract B-type natriuretic peptide (BNP) is a member of a four-natriuretic peptide family that shares a common 17-peptide ring structure. The N-terminal fragment (NT-pro-BNP) is biologically inert, but both are secreted in the plasma in equimolar quantities and both have been evaluated for use in the management of congestive heart failure. BNP and NT-pro-BNP are frequently used in the diagnosis of congestive heart failure and distinguishing between patients with dyspnoea of cardiac or pulmonary origin. Values of NT-pro-BNP are affected by age or the presence of one or several co-morbidities such as chronic renal failure, type 2 diabetes, and acute coronary syndrome. ‘Normal’ values of thes…
Differential specificity of substrate-attached lectins stimulating spreading of GH3-cells under serum-free, hormone-supplemented culture conditions
1982
Most mammalian cells are capable of growth in culture only when they are supplied with an appropriate substrate to which they can adhere and spread. To prepare suitable substrates different lectins were attached onto polystyrene tissue-culture dishes after coating with polylysine. GH3-cells (a pituitary-tumor-cell line) were seeded into the culture dishes containing serum-free, hormone-supplemented medium. When succinylated Concanavalin A (s-Con A), which binds specifically to mannose residues, is attached to the surface an extraordinary spreading of GH3-cells is induced within 15 to 20 min after seeding. Other lectins with a different sugar-binding specificity are less effective in inducin…
Anabolic steroids and their effects on health: a case study of media social responsibility
2019
Anabolic steroids are among the oldest performance- enhancing drugs in sport and their use has spread into many other layers of society. The use and sale of steroids are illegal in most parts of the world, and authorities who attempt to combat trafficking in them find themselves engaged in ceaseless, yet ultimately futile efforts: traffickers are always a step ahead of them. However, an effective way to combat steroid use could be to inform people about these drugs' advantages and disadvantages. The mainstream media can play an important part in this process. They have a social responsibility to provide exhaustive information about the long-term damage caused by these substances. Do journal…
Reproductive effects in German cockroaches by ecdysteroid agonist RH-0345, juvenile hormone analogue methoprene and carbamate benfuracarb
2004
1379-1176 (Print) Journal Article Research Support, Non-U.S. Gov't; Blatta germanica is the more prevalent cockroach species in Algeria. In the present study, we tested the effect on reproduction in B. germanica of two insect growth regulators, RH-0345, a benzoylhydrazine analogue that mimics the action of 20-hydroxyecdysone, and methoprene, one of the most commercially important juvenile hormone analogues, and a novel carbamate insecticide, benfuracarb. The compounds were applied topically (10 and 20 microg/insect for RH-0345, and 1 and 10 microg/insect for methoprene) or orally administrated (at 2% for benfuracarb) on newly emerged females and evaluated on reproductive events during the a…
The neuroprotective actions of corticotropin releasing hormone
2005
Corticotropin-releasing hormone (CRH) modulates the activity of the hypothalamic-pituitary-adrenal (HPA) axis, and has a key role in mediating neuroendocrine effects that occur in response to stressful stimuli. Disruption of the CRH system however has been shown to be closely associated with the progression of Alzheimer's disease (AD), and these observations prompted an investigation into the potential neuroprotective effects of the hormone. In addition to its regulatory affects on the molecular processes that underlie AD i.e., amyloid precursor protein (APP) processing and potentially tau phosphorylation, evidence is provided that the neuroprotective effects of CRH are mediated by a number…
Resistance to thyroid hormones. Study of an affected kindred diagnosed at neonatal age
1998
Resistance to thyroid hormones (RTH) is a rare condition of reduced activity of thyroid hormones on peripheral tissues and/or reduced suppression of TSH secretion by thyroid hormones. The disease is characterised by high serum levels of T3, T4, fT3 and fT4, and by unexpectedly normal or high TSH levels. The origin of the resistance has been recognised in a thyroid hormone receptor deficit, whose gene (TRβ) has been mapped on chromosome 3p24.3 and several mutations have been identified. The clinical presentation may vary among a large spectrum from hypo-, to eu-, to hyperthyroidism in different patients, even in the same family. The diagnosis of RTH at birth and in the first months of life i…
Fluorogenic Sensing of Carcinogenic Bisphenol A using Aptamer-Capped Mesoporous Silica Nanoparticles
2017
[EN] Mesoporous silica nanoparticles loaded with rhodamine B and capped with a bisphenol A aptamer were used for the selective and sensitive detection of this lethal chemical. The pores of the nanoparticles are selectively opened in the presence of bisphenol A (through its selective coordination with the aptamer) with subsequent rhodamine B delivery. With this capped material a limit of detection as low as 3.5 mu m of bisphenol A was measured.
Micropollutants removal in an anaerobic membrane bioreactor and in an aerobic conventional treatment plant
2012
The paper expresses an attempt to tackle the problem due to the presence of micropollutants in wastewater which may be able to disrupt the endocrine system of some organisms. These kinds of compounds are ubiquitously present in municipal wastewater treatment plant (WWTP) effluents. The aim of this paper is to compare the fate of the alkylphenols-APs (4-(tert-octyl)) phenol, t-nonylphenol and 4-p-nonylphenol and the hormones (estrone, 17ß-estradiol and 17¿-ethinylestradiol) in a submerged anaerobic membrane bioreactor (SAMBR) pilot plant and in a conventional activated sludge wastewater treatment plant (CTP). The obtained results are also compared with the results obtained in a previous stud…
Sepsis at ICU admission does not decrease 30-day survival in very old patients : a post-hoc analysis of the VIP1 multinational cohort study
2020
AbstractBackgroundThe number of intensive care patients aged ≥ 80 years (Very old Intensive Care Patients; VIPs) is growing. VIPs have high mortality and morbidity and the benefits of ICU admission are frequently questioned. Sepsis incidence has risen in recent years and identification of outcomes is of considerable public importance. We aimed to determine whether VIPs admitted for sepsis had different outcomes than those admitted for other acute reasons and identify potential prognostic factors for 30-day survival.ResultsThis prospective study included VIPs with Sequential Organ Failure Assessment (SOFA) scores ≥ 2 acutely admitted to 307 ICUs in 21 European countries. Of 3869 acutely admi…
Effects of bovine colostrum supplementation on serum IGF-I, IgG, hormone, and saliva IgA during training.
1997
Mero, Antti, Heidi Miikkulainen, Jarmo Riski, Raimo Pakkanen, Jouni Aalto, and Timo Takala. Effects of bovine colostrum supplementation on serum IGF-I, IgG, hormone, and saliva IgA during training. J. Appl. Physiol.83(4): 1144–1151, 1997.—The purpose of this study was to examine the effects of bovine colostrum supplementation (Bioenervi) on serum insulin-like growth factor I (IGF-I), immunoglobulin G, hormone, and amino acid and saliva immunoglobulin A concentrations during a strength and speed training period. Nine male sprinters and jumpers underwent three randomized experimental training treatments of 8 days separated by 13 days. The only difference in the treatments was the drink of 125…