Increased susceptibility to cephamycin-type antibiotics of methicillin-resistant Staphylococcus aureus defective in penicillin-binding protein 2.

نویسندگان

  • K Murakami
  • K Nomura
  • M Doi
  • T Yoshida
چکیده

A methicillin-resistant strain of Staphylococcus aureus which produced low-affinity penicillin-binding protein 2' (PBP 2') spontaneously lost PBP 2 when the strain was cultivated at 43 degrees C overnight. At 37 degrees C, the mutant had increased susceptibility to cephamycin-type beta-lactams, which showed high affinity for PBP 4. This result suggests that inhibition of PBP 4, in addition to that of PBP 2, is necessary to kill methicillin-resistant strains.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Nasal Colonization Rate of Community and Hospital Acquired Methicillin Resistant Staphylococcus Aureus in Hospitalized Children

Background & Aims: Prevalence of community and hospital acquired methicillin-resistant Staphylococcus aureus (MRSA) infection is increasing. The primary reservoir is the anterior nares; and nasal carriage is a risk factor for infection in a variety of populations. Infection due to hospital-acquired colonization is different from community acquired in clinical manifestations and antibiotics susc...

متن کامل

Evaluation of the Prevalence of mec A Gene in Staphylococcus aureus Strains Isolated from Clinical Specimens of Hospitals and Treatment Centers

Background and Objective: Staphylococcus aureus bacteria is a common cause of hospital infections. Resistant strains of this bacterium are a major pathogen in causing disease and death in Iran and the world. Therefore, the aim of this study was to investigate the prevalence of mecA methicillin resistance gene and determine antibiotic resistance patterns in S. aureus strains isolated from clinic...

متن کامل

ردیابی ژن ایجاد مقاومت نسبت به متی سیلین (mec-A) در عفونتهای چرکی ناشی از استافیلوکوک بوسیله PCR

The emergence of Staphylococcus strains resistant to methicillin     occurred shortly after the introduction of methicillin into clinical use .    Resistance to methicillin in clinical isolates of Staphylococci has been    explained by the production of a characteristic penicillin-binding protein    (PBP) , designated PBP2a, that has a decrea...

متن کامل

Genotypic Investigation of Methicillin Resistant Staphylococcus aureus Strains Isolated from Urinary Tract Infection

Background and purpose: Methicillin resistant Staphylococcus aureus (MRSA) have recently emerged as major causes of urinary tract infection (UTI). The aims of this study were to determine antibiotic susceptibility of S. aureus isolated from UTI and to detect the presence of mecA (causing resistance to methicillin) and SCCmec types. Materials and methods: In this cross sectional study, 44 S. au...

متن کامل

Identification of Functional Regulatory Residues of the β-Lactam Inducible Penicillin Binding Protein in Methicillin-Resistant Staphylococcus aureus

Resistance to methicillin by Staphylococcus aureus is a persistent clinical problem worldwide. A mechanism for resistance has been proposed in which methicillin resistant Staphylococcus aureus (MRSA) isolates acquired a new protein called β -lactam inducible penicillin binding protein (PBP-2'). The PBP-2' functions by substituting other penicillin binding proteins which have been inhibited by β...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Antimicrobial agents and chemotherapy

دوره 31 9  شماره 

صفحات  -

تاریخ انتشار 1987