Objective:To determine the pattern of antibiotic resistance among Staphylococcus aureus(S. aureus) isolates from clinical specimens and to identify community-acquired methicillin-resistant Staphylococcus aureus(CA-MRS...Objective:To determine the pattern of antibiotic resistance among Staphylococcus aureus(S. aureus) isolates from clinical specimens and to identify community-acquired methicillin-resistant Staphylococcus aureus(CA-MRSA) in specimens that have been collected from patients referring to one of the hospitals of Ahvaz.Methods:S.aureus isolates from a hospital in Ahvaz were screened for resistance to various antibiotics including methicillin.The susceptibility of the isolates was determined by Kirby-Bauer disc diffusion method.The MRSA was also treated with ethidium bromide to find the origin of resistance.Results:Among the bacterial isolates,all of 11 S.aureus were resistant to methicillin and cefixime,2 were resistant to ciprofloxacin,6 were resistant to tetracycline and the reminder were sensitive or intermediate to other antibiotics.The treated isolates were reminded resistant to methicillin and this suggested that the plasmid was not the origin of resistance in these isolates.Conclusions:These results showed that infection due to MRSA is widespread in Ahvaz and with respect to the spread of vancomycin resistance among MRSA and appearance of overwhelming infections.It is necessary to identify continuously the profile of antibiotic resistance among S.aureus isolates in other regions and finding appropriate antibiotic for infection control and eradication.展开更多
While erythema nodosum is a nodular, erythematous eruption predominantly affecting the extensor aspects of the legs, breast abscesses are the result of relatively common bacterial infections, and only 2 studies have r...While erythema nodosum is a nodular, erythematous eruption predominantly affecting the extensor aspects of the legs, breast abscesses are the result of relatively common bacterial infections, and only 2 studies have reported an association between erythema nodosum and breast abscesses. Here, we report the case of a patient with repeated erythema nodosum associated with subareolar abscesses. The patient was a 34-year-old woman with painful erythematous nodules on her right shin, accompanied by an indurated lesion on her right breast 4 days before the onset of the nodules. Therefore, the patient underwent circumareolar incision, and consequently the painful erythematous nodules disappeared. However, after 39 days, the patient developed another tender, painful lesion in her right breast and painful erythematous nodules on her right shin. After another circumareolar incision, the painful erythematous nodules disappeared again. Therefore, we suggested a significant association between erythema nodosum and breast abscess in this patient. The most common underlying causative organism in breast abscess is Staphylococcus aureus;however, erythema nodosum has rarely been proven to be associated with staphylococcal infections. Therefore, the relationship between S. aureus and erythema nodosum is rather controversial. However, the resistance to the usual treatment methods and prolonged clinical course in our case suggest that the pathogenesis of erythema nodosum associated with breast abscesses might be different from that of the common form of erythema nodosum.展开更多
基金Shahid Chamran University for providing the research grant
文摘Objective:To determine the pattern of antibiotic resistance among Staphylococcus aureus(S. aureus) isolates from clinical specimens and to identify community-acquired methicillin-resistant Staphylococcus aureus(CA-MRSA) in specimens that have been collected from patients referring to one of the hospitals of Ahvaz.Methods:S.aureus isolates from a hospital in Ahvaz were screened for resistance to various antibiotics including methicillin.The susceptibility of the isolates was determined by Kirby-Bauer disc diffusion method.The MRSA was also treated with ethidium bromide to find the origin of resistance.Results:Among the bacterial isolates,all of 11 S.aureus were resistant to methicillin and cefixime,2 were resistant to ciprofloxacin,6 were resistant to tetracycline and the reminder were sensitive or intermediate to other antibiotics.The treated isolates were reminded resistant to methicillin and this suggested that the plasmid was not the origin of resistance in these isolates.Conclusions:These results showed that infection due to MRSA is widespread in Ahvaz and with respect to the spread of vancomycin resistance among MRSA and appearance of overwhelming infections.It is necessary to identify continuously the profile of antibiotic resistance among S.aureus isolates in other regions and finding appropriate antibiotic for infection control and eradication.
文摘While erythema nodosum is a nodular, erythematous eruption predominantly affecting the extensor aspects of the legs, breast abscesses are the result of relatively common bacterial infections, and only 2 studies have reported an association between erythema nodosum and breast abscesses. Here, we report the case of a patient with repeated erythema nodosum associated with subareolar abscesses. The patient was a 34-year-old woman with painful erythematous nodules on her right shin, accompanied by an indurated lesion on her right breast 4 days before the onset of the nodules. Therefore, the patient underwent circumareolar incision, and consequently the painful erythematous nodules disappeared. However, after 39 days, the patient developed another tender, painful lesion in her right breast and painful erythematous nodules on her right shin. After another circumareolar incision, the painful erythematous nodules disappeared again. Therefore, we suggested a significant association between erythema nodosum and breast abscess in this patient. The most common underlying causative organism in breast abscess is Staphylococcus aureus;however, erythema nodosum has rarely been proven to be associated with staphylococcal infections. Therefore, the relationship between S. aureus and erythema nodosum is rather controversial. However, the resistance to the usual treatment methods and prolonged clinical course in our case suggest that the pathogenesis of erythema nodosum associated with breast abscesses might be different from that of the common form of erythema nodosum.
