Preterm labour (PTL) is the most important cause of neonatal morbidity and mortality. While some causes have been identified, the mechanisms involved remain elusive. This study investigates whether term labour (TL) is an appropriate model for PTL by examining prolabour gene expression, using quantitative rtPCR, and protein synthesis, using Western analysis, in preterm and term myometrial samples obtained from the upper and lower uterine segments before and after the onset of labour. In the lower segment, the levels of prostaglandin H synthase type-2 (PGHS-2), interleukin-1b (IL-1b), IL-6 and IL-8 mRNA expression were significantly higher in TL compared with PTL samples. Compared with non-labour controls, the expression of IL-1b and IL-8 mRNA was increased in both PTL and TL samples and the expression of PGHS-2 and IL-6 mRNA was increased in TL samples only. In the upper segment, there were no differences between PTL and TL samples and the mRNA expression of PGHS-2 and IL-1b was increased in TL compared with term no labour samples. No effect of PTL or TL was seen on either oxytocin receptor or connexin-43 mRNA expression or protein levels. The multiple regression analysis and studies in primary cultures of uterine myocytes suggest that the inflammatory cytokines, IL-1b and tumour necrosis factor-a, are the most important regulators of PGHS-2 and IL-8. Our data show that preterm and term labouring myometrium are significantly different and that the most marked labour-induced changes in gene expression are in the lower segment. These changes may occur in response to the release of inflammatory cytokines by the labour-associated inflammatory infiltration. Reproduction (2008) 135 569-579
Medroxyprogesterone acetate controls expression of multiple genes in myometrium, including many that have not previously been characterized as progestogen regulated in this tissue, including IL-11 and IL-24. It is plausible that proteins encoded by some of these genes may have important but as yet uncharacterized effects in controlling human parturition.
Objective Refeeding patients with anorexia nervosa can be one of the more challenging aspects of their treatment, and particularly if all food and fluids are adamantly and persistently refused. Method If the decision is made to augment or replace oral feeds, the most common intervention is nasogastric feeding. Results Although this is often successful, a subset of patients manage to sabotage feeding via this route. Other means of delivering nutrition such as intravenous feeds are often impractical for long‐term use. Another alternative in such life‐threatening situations is the use of enteric feeds via gastrostomy or jejunostomy. This paper presents the successful use of such enteric feeding in four cases of severe adolescent anorexia nervosa. Discussion The psychological, legal, and ethical issues involved are discussed, concluding that gastrostomy and jejunostomy are valid lifesaving methods to feed highly resistant anorectic patients. © 2000 by John Wiley & Sons, Inc. Int J Eat Disord 28: 470–475, 2000.
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