Histopathological and molecular evaluation of Holstein-Friesian cows postpartum: Toward an improved understanding of uterine innate immunity
THERIOGENOLOGY
Authors: Chapwanya, Aspinas; Meade, Kieran G.; Doherty, Michael L.; Callanan, John. J.; Mee, John F.; O'Farrelly, Cliona
Abstract
Bovine uterine disease reduces milk yield, impairs fertility and has implications for animal welfare. During involution, the uterus is usually exposed to Multiple potential bacterial pathogens which are cleared by Successful orchestration of the local inflammatory response. Unsuccessful resolution leads to the development of disease. The aim of this study was to characterize the local innate immune response in the uterus during physiological involution using histopathological and molecular analyses in 9 cows, 2 weeks after calving (early postpartum, EPP), and 4 cows, 9 weeks after calving (late postpartum LPP). Uterine biopsies taken from each cow were classified by histopathology, and RNA was extracted for Molecular analysis. Two EPP cows were classified with it mild, 5 with a moderate and 2 with a severe inflammatory response. Relative gene expression analysis was then performed using quantitative real-time PCR (qRT-PCR) and specific primers for genes encoding Toll-like receptors (TLRs), chemokines, cytokines, acute phase proteins (APPs) and antimicrobial peptides (AMPs). TLR4, transcription factor NFKB1 and the inflammatory cytokines IFNG, IL1A, IL6, IL8, IL12A were all significantly increased in EPP cows (P < 0.05). Increase in HP, SAA3, TAP and DEFB5 genes was particularly marked in cows with severe inflammation. These results reveal evidence of an inflammatory uterine environment in the early postpartum period with significant induction of both AMP and APP genes. Histopathological grades in EPP cows are underpinned by quantitative changes in gene expression. Understanding the molecular mechanisms contributing to uterine immunity in the early postpartum Period may identify candidate genes associated with the resolution of inflammation. (C) 2009 Elsevier Inc. All rights reserved.
Effects of periodontal therapy on markers of systemic inflammation in patients with coronary heart disease risk
REVISTA MEDICA DE CHILE
Authors: Lopez, Nestor J.; Quintero, Antonio; Llancaqueo, Marcelo; Jara, Lilian
Abstract
Background: Studies investigating effects of periodontal treatment (PT) on markers of inflammation in healthy subjects show conflicting results. Few studies have investigated the effects of PT among subjects with coronary heart disease (CHD) risk factors. Aim: To report the results of a pilot prospective study on the effects of periodontal treatment on markers of inflammation among subjects with CHD risk factors. Material and Methods: Seventy three patients aged 53 +/- 6 years (25% males) with chronic periodontitis, dyslipidemia and other CHD risk factors were subjected to PT consisting on root planning and oral metronidazol and amoxicillin for 7 days. Periodontal clinical parameters, serum C-reactive protein (CRP), fibrinogen levels and erythrocyte sedimentation rate (ESR) were assessed before and at 6 weeks after PT. Polymorphisms at the IL1a-889 and IL1B+3954 genes were also genotyped. Results: After the treatment period, CRP levels significantly increased from 3.6 +/- 3.7 mg/L to 5.4 +/- 5.7 mg/L (p = 0.001). No significant changes were observed in fibrinogen levels and ESR. Higher post-treatment CRP levels were significantly associated with the composite polymorphic genotype at the IL1A-889 and IL1B+3954 genes (p = 0.0001), and extensive periodontitis (p = 0.005). Moderate alcohol consumption appeared as a protective factor for CRP elevation (p = 0.029). Conclusions: The increase of the CRP levels after PT in patients with CVD risk factors appeared associated with IL-1 gene polymorphisms and extensive periodontitis (Rev Med Chile 2009; 137: 1315-22).