Drugs online research references
pt.lu
Obesity, and its associated complications, is one of the most costly diseases in modern civilisations. Dieting alone rarely gives good long-term results. The effect of the combination of nutritional education and moderately intensive physical exercise on the evolution of weight and Body composition has been analysed by bio-impedancemetry over a one-year period. Patients could be divided into four groups: patients lost after the 3-week nutritional course, patients neither dieting nor exercising, patients dieting and patients both dieting and exercising. The results for the four groups were the following: undeterminably, 5% loss compared to initial weight (and nearly 10% compared to reported maximum weight). 10% loss and 15% loss over one year. In the last group, Body composition showed a relative increase in muscle mass, which explains the lack of a drop in basal metabolic rates seen in the diet-alone group. This maintained metabolic rate probably prevented patients from weight cycling (yo-yo phenomenon). This result can be compared to other life-style changing studies or pharmacological treatments (Orlistat, sibutramine) of obesity, which resulted in an approx. 10% weight reduction.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11200309&dopt=Abstract
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rug.ac.be
BACKGROUND: Several studies have pointed to a release of drugs or protein-bound solutes from their binding sites during heparinization. The effect is attributed to the metabolism of triglycerides to free fatty acids (FFAs), which compete with drugs for protein binding sites. This study evaluated the impact of intradialytic heparin on the free concentration of the uremic toxin p-cresol and on FFAS: METHODS: Blood samples from hemodialysis (HD) patients, before and during HD, were collected with selected anticoagulation strategies. We assessed the effects of standing time, temperature, pH, and the addition of a lipase inhibitor, tetrahydrolipstatin (THL) to blood samples on the free p-cresol concentration. p-Cresol was analyzed by HPLC with fluorescence detection. We measured FFAs by gas chromatography, and the free fractions of added valproic acid and phenytoin were evaluated by fluorescence polarization immunoassay. RESULTS: In blood samples (n = 22) not submitted to a specific treatment, free p-cresol increased from 9.9 +/- 5.1 to 31.9 +/- 22.3 micromol/L after 30 min of heparin HD (P < 0.001) and correlated significantly with FFAs (r = 0.80; P = 0.002; n = 12). There was no increase in free p-cresol during heparin-free HD (n = 6) and trisodium citrate HD (n = 9). In addition, p-cresol in ultrafiltrates (n = 3) did not correspond to the free p-cresol in heparinized blood, suggesting that the increase in free p-cresol was artifactual. The release of p-cresol in the test tube was enhanced by standing time (n = 6), sample temperature (n = 6), and alkaline pH (n = 6). Inhibition of lipase activity with THL prevented the increase of FFAs (n = 6) and the release of free p-cresol during HD (n = 22). These results were corroborated by the study of the free fraction of valproic acid (n = 6) and phenytoin (n = 6). CONCLUSIONS: The free concentrations of protein-bound solutes in plasma of heparinized patients are influenced by external factors that alter the lipase activity in the test tube. The free fraction does not increase during HD when lipase activity is neutralized at the time of blood sampling, so that previously reported increases are probably artifacts.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11325895&dopt=Abstract
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Aust Fam Physician. 2001 Apr;30(4):335-8.
The role of orlistat in weight management.
Marks S.
Monash Medical Centre, Melbourne, Victoria.
BACKGROUND: Most antiobesity drugs act centrally to reduce appetite or increase satiety. Orlistat is the first in a new class of drugs targeted at a single dietary component, in this case dietary fat. OBJECTIVE: To review the clinical actions and efficacy of orlistat and to discuss its place in overall weight management. DISCUSSION: Orlistat is best used in long term weight management as an adjunct to dietary modification and increased physical activity. The reduction in fat absorption results in a slow but sustained weight reduction and improved metabolic parameters such as reduced total, and LDL cholesterol. Side effects are minimised by maintaining a low fat diet.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11355219&dopt=Abstract
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