A comparative study of feto-maternal outcome in expectant management versus active management in pre-labor rupture of membranes at term

Background: Premature rupture of the membranes at term is spontaneous rupture of the membranes after 37 weeks of gestation and before the onset of the regular painful uterine contractions, complicates 5-10% of pregnancies, 80% of cases of PROM occur at term. It complicates the pregnancy leading to maternal and fetal complications, immediate risks such as cord prolapse, cord compression and placental abruptions, and later risks such as maternal or neonatal infection and the interventions such as caesarean section and instrumental vaginal delivery. These cases are either managed conservatively or by immediate induction of labour. Objective of present study is to compare the efficacy and safety of induction of labor versus expectant management at term PROM, in terms of maternal and fetal outcome.Methods: A randomized control trial of 100 women coming to KIMSH from 01 /04 /2015 to 01 /05 /2016 with PROM at term with duration of leak ≤6 hours and a Bishop score ≤5 were assigned to group A immediate induction group and group B expectant management group with 50 cases in each group.Results: The mean interval from PROM to delivery was significantly shorter in the induction Group 15.62±4.97 as compared with expectant group 17.58±4.78. Incidence of maternal morbidity and neonatal morbidity was comparable in both the groups. Intrapartum complications and mode of delivery were similar in both groups.Conclusions: Immediate induction of labour in cases of PROM at term using oral misoprostol resulted in shorter induction delivery interval and hospital stay. Maternal morbidity and neonatal morbidity was comparable in both groups. It is concluded that immediate induction is better than expectant management. With active management many patients delivered vaginally within 24 hours without increase in the Caesarean section rate and decreased the need for oxytocin augmentation

Molecular Basis for the Role of Staphylococcus aureus Penicillin Binding Protein 4 in Antimicrobial Resistance▿

Penicillin binding proteins (PBPs) are membrane-associated proteins that catalyze the final step of murein biosynthesis. These proteins function as either transpeptidases or carboxypeptidases and in a few cases demonstrate transglycosylase activity. Both transpeptidase and carboxypeptidase activities of PBPs occur at the d-Ala-d-Ala terminus of a murein precursor containing a disaccharide pentapeptide comprising N-acetylglucosamine and N-acetyl-muramic acid-l-Ala-d-Glu-l-Lys-d-Ala-d-Ala. β-Lactam antibiotics inhibit these enzymes by competing with the pentapeptide precursor for binding to the active site of the enzyme. Here we describe the crystal structure, biochemical characteristics, and expression profile of PBP4, a low-molecular-mass PBP from Staphylococcus aureus strain COL. The crystal structures of PBP4-antibiotic complexes reported here were determined by molecular replacement, using the atomic coordinates deposited by the New York Structural Genomics Consortium. While the pbp4 gene is not essential for the viability of S. aureus, the knockout phenotype of this gene is characterized by a marked reduction in cross-linked muropeptide and increased vancomycin resistance. Unlike other PBPs, we note that expression of PBP4 was not substantially altered under different experimental conditions, nor did it change across representative hospital- or community-associated strains of S. aureus that were examined. In vitro data on purified recombinant S. aureus PBP4 suggest that it is a β-lactamase and is not trapped as an acyl intermediate with β-lactam antibiotics. Put together, the expression analysis and biochemical features of PBP4 provide a framework for understanding the function of this protein in S. aureus and its role in antimicrobial resistance

al complexes and virulence factors of Staphylococcus aureus from several cities in India.

International audienceABSTRACT: BACKGROUND: Diseases from Staphylococcus aureus are a major problem in Indian hospitals and recent studies point to infiltration of community associated methicillin resistant S. aureus (CA-MRSA) into hospitals. Although CA-MRSA are genetically different from nosocomial MRSA, the distinction between the two groups is blurring as CA-MRSA are showing multidrug resistance and are endemic in many hospitals. Our survey of samples collected from Indian hospitals between 2004 and 2006 had shown mainly hospital associated methicillin resistant Staphylococcus aureus (HA-MRSA) carrying staphylococcal cassette chromosome mec (SCCmec) type III and IIIA. But S. aureus isolates collected from 2007 onwards from community and hospital settings in India have shown SCCmec type IV and V cassettes while several variations of type IV SCCmec cassettes from IVa to IVj have been found in other parts of the world. In the present study, we have collected nasal swabs from rural and urban healthy carriers and pus, blood etc from in patients from hospitals to study the distribution of SCCmec types and sequence types (ST) in the community and hospital environment. We performed molecular characterization of all the isolates to determine their lineage and microarray of select isolates from each sequence type to analyze their toxins, virulence and immune-evasion factors. RESULTS: Molecular analyses of 68 S. aureus isolates from in and around Bengaluru and three other Indian cities have been carried out. Our strains fall into fifteen ST with all major clonal complexes (CC) present along with some minor ones. The dominant MRSA clones are ST22 and ST772 among healthy carriers and patients. We are reporting two methicillin sensitive S. aureus (MSSA) isolates belonging to ST291 (related to ST398 which is live stock associated), ST1208 (CC8), and ST672 as emerging MRSA clones in this study for the first time. Sixty nine percent of isolates carry Panton- Valentine Leucocidin genes (PVL) along with many other toxins. There is more diversity of ST among methicillin sensitive S. aureus than resistant ones. Microarray analysis of isolates belonging to different ST for the first time gives an insight into major toxins, virulence factors, adhesion and immune evasion factors present among the isolates in various parts of India. CONCLUSIONS: S. aureus isolates reported in this study belong to a highly diverse group of ST and CC and we are reporting several new ST which have not been reported earlier along with factors influencing virulence and host pathogen interactions

Genotyping of Methicillin-Resistant Staphylococcus aureus Strains from Two Hospitals in Bangalore, South India

Methicillin-resistant Staphylococcus aureus (MRSA) is a major nosocomial pathogen in India, and up to 70% methicillin resistance has been reported from hospitals in various parts of India. Hospitals use phenotyping for the most part, and molecular genotyping is not done. Here we report on the genotyping of 82 single-patient isolates from two hospitals in Bangalore, South India, for the first time. Most of the strains possessed type III or IIIA staphylococcal cassette chromosome (SCCmec) cassettes, and we did not detect strains with type I, IA, or II cassettes. Most isolates also contained the type III cassette chromosome recombinase (ccr) AB region. Multilocus sequence typing (MLST) and staphylococcal protein A (spa) typing of a selected number of isolates have been carried out. Although most isolates that were chosen for MLST and spa typing had the same patterns, they were quite diverse in their pulsed-field gel electrophoresis (PFGE) patterns. PFGE, MLST, and spa typing of the Indian strains revealed that they are related to the previously described Hungarian and Brazilian clones

Community-acquired methicillin-resistant Staphylococcus aureus pyomyositis with myelitis: A rare occurrence with diverse presentation

Staphylococcus aureus is the most common bacterial pathogen implicated in pyomyositis. There are increasing reports of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections. The present case report brings out the diverse clinical manifestations of MRSA infection in the form of paraspinal pyomyositis, myelitis, spinal osteomyelitis, and pneumonia. Molecular typing of the organism confirmed the diagnosis. Patient was successfully treated with vancomycin and surgical drainage. Consideration of the possibility of methicillin-resistance and appropriate antibiotic selection is vital in the treatment of serious community-acquired staphylococcal infections