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Beijing, China

Li S.,Health Examination Center
Journal of Antimicrobial Chemotherapy | Year: 2014

Objectives: To describe a novel functional class 2 integron that was found in clinical Proteus mirabilis isolates. Methods: Class 1 and 2 integrons were screened by PCR in 153 clinical Proteus isolates. The variable regions of class 1 and 2 integrons were determined by restriction analysis and sequencing. The mutations of internal stop codons in class 2 integrons and their common promoters were also determined by sequencing. Enterobacterial repetitive intergenic consensus (ERIC)-PCR was used to analyse the phylogenetic relations of class 2 integron-positive P. mirabilis isolates. Results: Class 1 integrons were detected in 96 (63%) of 153 Proteus isolates: eight different gene cassette arrays were detected, including dfrA32-ereA1-aadA2, which was detected for the first time in P. mirabilis. Class 2 integrons were detected in 101 (66%) of 153 Proteus isolates: four different gene cassette arrays were detected, including dfrA1-catB2-sat2-aadA1, which was detected for the first time in a class 2 integron. A novel functional class 2 integron was detected in 38 P. mirabilis isolates with a common promoter (-35 TTTAAT|16 bp|-10 TAAAGT). The variable region of this functional class 2 integron contained dfrA14 and three novel open reading frames with unknown functions. Very similar ERIC-PCR fingerprinting patterns were detected in these 38 P. mirabilis isolates and were different from other class 2 integron-positive isolates. Conclusions: A novel functional class 2 integron was found for the first time in P. mirabilis. These functional class 2 integron-harbouring P. mirabilis isolates were likely to be clonally spread in our hospital. © The Author 2013. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved.

Fantino B.,University of Angers | Fantino B.,Health Examination Center | Beauchet O.,University of Angers | Savignat S.,University of Angers | And 3 more authors.
Advances in Therapy | Year: 2011

Introduction: The vast majority of older French adults exhibit some degree of hypovitaminosis D. The objective of this cross-sectional study was to determine the rate and the reasons for vitamin D prescription among older French adult community dwellers. Methods: Vitamin D supplementation was systematically assessed among 1876 French community dwellers aged ≥65 years. Theoretical indications for vitamin D supplementation were collected, ie, the causes of hypovitaminosis D (older age, male gender, kidney failure, undernutrition, polymorbidity) or its clinical complications (vertebral or non-vertebral fractures, gait disturbances, history of falls, muscle weakness, and cognitive impairment). Results: In total, 13.8% of the subjects (n=258) had vitamin D supplementation. They were more often malnourished (P=0.002), exhibited polymorbidity (P<0.001) and muscle weakness (P<0.001), and had a history of vertebral fractures (P<0.001), non-vertebral fractures (P<0.001), and accidental falls (P<0.001). Vitamin D supplementation was explained by the number of complications of hypovitaminosis D (odds ratio [OR]=1.61, P<0.001) including vertebral fractures (adjusted OR=1.49, P=0.007), non-vertebral fractures (adjusted OR=1.74, P=0.026), accidental falls (adjusted OR=1.44, P=0.015), and muscle weakness (adjusted OR=3.96, P<0.001), but not by the number of causes of hypovitaminosis D (P=0.464). Conclusion: Even if vitamin D supplementation is selected well for appropriate patients, the rate of supplementation remains insufficient in France, and probably comes too late, ie, at the stage of complications of hypovitaminosis D. These findings should encourage physicians to supplement vitamin D more often and sooner in their elderly patients. © 2011 Springer Healthcare.

Matsumoto A.,Saga Medical School | Matsumoto A.,11 Health | Ichiba M.,Saga Medical School | Payton N.M.,Aurora Pharmaceutical | And 2 more authors.
Environmental Health and Preventive Medicine | Year: 2013

Objectives: Measuring urinary cotinine is a popular and established method of biologically monitoring exposure to tobacco smoke. However, the lower detection limit of cotinine often impedes the evaluation of passive (second-hand) smoking and this, together with unconverted nicotine, does not reflect actual levels of exposure. Furthermore, a portion of the Japanese population might have decreased ability to metabolize nicotine. The present study was therefore carried out to validate the simultaneous analysis of total concentrations of free nicotine and cotinine and their glucuronides to determine actual levels of voluntary and involuntary exposure to cigarette smoke. Methods: Urine samples from 118 Japanese smokers and 117 non-smokers were analyzed using gas chromatography-mass spectrometry. Voluntary and involuntary smoking status was self-reported and workplace smoking restrictions were objectively evaluated. Results: The integrated sum of all concentrations showed 2.2- and 2.4-fold higher total levels (free and glucuronide) of nicotine and cotinine relative to the free levels. Median (quartiles) of total nicotine and cotinine were 1635 (2222) and 3948 (3512) ng/mL in smokers, and 3.5 (5.3) and 2.8 (4.2) ng/mL in non-smokers. Concentrations of urinary nicotine were higher than those of cotinine in 21 % of smokers and in 54 % of non-smokers. Nicotine and cotinine levels were significantly associated with a smoking habit, as well as being significantly associated with the workplace and home environments of non-smokers. Conclusions: The present method can monitor voluntary and involuntary exposure to tobacco smoke. Measuring total urinary nicotine levels might be useful for analyzing exposure to cigarette smoke among non-smokers. © 2012 The Japanese Society for Hygiene.

Zhang Z.-M.,Dongying City Peoples Hospital | Niu Q.,Dongying City Peoples Hospital | Nie Y.,Health Examination Center | Zhang J.,Dongying City Peoples Hospital
International Journal of Clinical and Experimental Medicine | Year: 2015

Objective: This study is to compare the efficacy of three different cataract surgeries in eyes with angle closure glaucoma (ACG) with concomitant cataract. Methods: A retrospective comparative analysis of 106 ACG patients (112 eyes) with concomitant cataract was conducted between February, 2012 and February, 2014. Clinical outcomes of ACG patients with concomitant cataract underwent phacoemulsification and intraocular lens implantation (group A, n = 34, 36 eyes, angle closure < 180°); combined phacoemulsification, intraocular lens implantation, and goniosynechialysis (group B, n = 43, 45 eyes, angle closure, 180°~270°); and combined phacoemulsification, intraocular lens implantation, and trabeculectomy (group C, n = 29, 31 eyes, angle closure > 270°) were compared during a 6-month follow-up. Results: There were no statistical differences among the 3 groups in pre-operative or post-operative average visual acuity (VA), intraocular pressure (IOP), anterior chamber depth (ACD), and angle opening distance (AOD) (all P > 0.05). Post-operative VA, IOP, ACD, AOD and the degree of angle opening in the 3 groups were all improved as compared with pre-operative levels (all P < 0.05). No statistical difference was detected among the 3 groups in the incidence of complications (χ2 = 0.376, P = 0.829). Conclusion: Phacoemulsification alone, combined phacoemulsification/goniosynechialysis, and combined phacoemulsification/trabeculectomy provide safe, effective, predictable, and stable options of cataract surgery for treatment of ACG with concomitant cataract. © 2015, E-Century Publishing Corporation. All rights reserved.

Li J.-F.,Harbin Medical University | Chen S.,Harbin Medical University | Feng J.-D.,Health Examination Center | Zhang M.-Y.,Harbin Medical University | Liu X.-X.,Harbin Medical University
Experimental and Molecular Pathology | Year: 2014

Activation of Na+/H+ exchanger 1 (NHE1) by lipopolysaccharide (LPS) via Ca2+/calpain is responsible in vascular smooth muscle cell (VSMC) apoptosis and to the process of atherosclerosis. Probucol is a lipid-lowering drug which has an anti-atherosclerosis effect. The mechanism remains poorly understood. Here we hypothesized that probucol via inhibition of NHE1 in VSMCs attenuates LPS-accelerated atherosclerosis and promotes plaque stability. Our results revealed that treatment of VSMCs with LPS increased the NHE1 activity in a time-dependent manner, associated with the increased Ca2+ i. Probucol inhibited the LPS-induced increase of NHE1 activity in a dose-dependent manner in VSMCs for 24-hour co-incubation, as well as the change of Ca2+ i. In addition, LPS enhanced the calpain activity. Both probucol and calcium chelation of Ca2+ abolished the LPS-induced increase of calpain activity. Treatment of VSMCs with LPS reduced the expression of Bcl-2 without altering the mRNA level. Probucol inhibited the LPS-reduced expression of Bcl-2 protein in VSMCs. Animal studies indicated administration of probucol suppressed LPS-accelerated apoptosis, atherosclerosis and plaque instability in Apoe-/- mice. In conclusion, probucol via inhibition of NHE1 attenuates atherosclerosis lesion growth and promotes plaque stability. © 2014 Elsevier Inc.

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