Background: Mycobacterium (M) chelonei keratitis is a rare opportunistic eye infection that can cause significant morbidity when not being treated properly. The first case was documented by Gangadharam et al in 1978 a...Background: Mycobacterium (M) chelonei keratitis is a rare opportunistic eye infection that can cause significant morbidity when not being treated properly. The first case was documented by Gangadharam et al in 1978 and since then, a total of 49 cases were reported in the literature. One alarming fact is that more than 50% of cases were found in the Chinese population and mostly reported in recent years. The key to successful management of M. chelonei keratitis is early diagnosis by high index of suspicion. In order to alert ophthalmologists of this condition, we report a typical case of M. chelonei keratitis and review the literature of all the reported cases with special reference to its risk factors, treatments and outcome.Methods: The cases reported in the literature and a case of our own were reviewed and analyzed.Results: Our case was a 42-year-old gentleman who developed M. chlonei keratitis following pterygium surgery. He had typical clinical features of irregular infiltrates with radiating展开更多
Objective To determine the susceptibilities of M. tuberculosis H37Ra and M. chelonei subsp. absecessus to several frequently-used disinfectants and to evaluate the practicability of surrogating M. tuberculosis by the ...Objective To determine the susceptibilities of M. tuberculosis H37Ra and M. chelonei subsp. absecessus to several frequently-used disinfectants and to evaluate the practicability of surrogating M. tuberculosis by the latter. Methods A suspension quantitative bactericidal test was set up in accordance with Chinese Technique Standard for Disinfection to evaluate the susceptibility of each mycobacteria strain to each selected disinfectant. Killing log value was used as criterion in comparing the susceptibility to disinfectants between the two strains. Results M. chelonei subsp. abscessus was more resistant to chlorine disinfectant than M. tuberculosis while the two strains were similarly resistant to iodophor disinfectant, peracetic acid, alcohol and glutaraldehyde disinfectant. Conclusion M. chelonei subsp. abscessus has the potential to surrogate M. tuberculosis in evaluating mycobactericidal efficacies of disinfectants.展开更多
一元复方戊二醛消毒剂使用时不需要活化和另加入缓蚀剂。采用载体定量杀菌试验、理化分析及动物毒性试验方法,对其杀菌效果和消毒相关性能进行了实验室研究。结果,以含3000 mg/L戊二醛该复方消毒剂对细菌繁殖体作用1 m in,杀灭对数值达...一元复方戊二醛消毒剂使用时不需要活化和另加入缓蚀剂。采用载体定量杀菌试验、理化分析及动物毒性试验方法,对其杀菌效果和消毒相关性能进行了实验室研究。结果,以含3000 mg/L戊二醛该复方消毒剂对细菌繁殖体作用1 m in,杀灭对数值达到3.0以上;以含25 g/L戊二醛该复方消毒剂对龟分枝杆菌作用5 m in,对枯草杆菌黑色变种芽孢作用90 m in,平均杀灭对数值均超过3.0。用该消毒液浸泡止血钳5 h,对污染在止血钳上的枯草杆菌黑色变种芽孢可达到完全杀灭。一元复方戊二醛消毒液对小鼠急性经口毒性LD50大于5000 mg/kg体重,属于无毒类物质;该消毒剂原液产品在37℃下储存90 d,其戊二醛含量下降率小于10%。结论,一元复方戊二醛消毒剂稳定性良好,对细菌繁殖体、分枝杆菌和细菌芽孢杀灭作用较强。展开更多
基金Financial support:Supported in part by the Mrs.Annie Wong Eye Foundation
文摘Background: Mycobacterium (M) chelonei keratitis is a rare opportunistic eye infection that can cause significant morbidity when not being treated properly. The first case was documented by Gangadharam et al in 1978 and since then, a total of 49 cases were reported in the literature. One alarming fact is that more than 50% of cases were found in the Chinese population and mostly reported in recent years. The key to successful management of M. chelonei keratitis is early diagnosis by high index of suspicion. In order to alert ophthalmologists of this condition, we report a typical case of M. chelonei keratitis and review the literature of all the reported cases with special reference to its risk factors, treatments and outcome.Methods: The cases reported in the literature and a case of our own were reviewed and analyzed.Results: Our case was a 42-year-old gentleman who developed M. chlonei keratitis following pterygium surgery. He had typical clinical features of irregular infiltrates with radiating
文摘Objective To determine the susceptibilities of M. tuberculosis H37Ra and M. chelonei subsp. absecessus to several frequently-used disinfectants and to evaluate the practicability of surrogating M. tuberculosis by the latter. Methods A suspension quantitative bactericidal test was set up in accordance with Chinese Technique Standard for Disinfection to evaluate the susceptibility of each mycobacteria strain to each selected disinfectant. Killing log value was used as criterion in comparing the susceptibility to disinfectants between the two strains. Results M. chelonei subsp. abscessus was more resistant to chlorine disinfectant than M. tuberculosis while the two strains were similarly resistant to iodophor disinfectant, peracetic acid, alcohol and glutaraldehyde disinfectant. Conclusion M. chelonei subsp. abscessus has the potential to surrogate M. tuberculosis in evaluating mycobactericidal efficacies of disinfectants.
文摘一元复方戊二醛消毒剂使用时不需要活化和另加入缓蚀剂。采用载体定量杀菌试验、理化分析及动物毒性试验方法,对其杀菌效果和消毒相关性能进行了实验室研究。结果,以含3000 mg/L戊二醛该复方消毒剂对细菌繁殖体作用1 m in,杀灭对数值达到3.0以上;以含25 g/L戊二醛该复方消毒剂对龟分枝杆菌作用5 m in,对枯草杆菌黑色变种芽孢作用90 m in,平均杀灭对数值均超过3.0。用该消毒液浸泡止血钳5 h,对污染在止血钳上的枯草杆菌黑色变种芽孢可达到完全杀灭。一元复方戊二醛消毒液对小鼠急性经口毒性LD50大于5000 mg/kg体重,属于无毒类物质;该消毒剂原液产品在37℃下储存90 d,其戊二醛含量下降率小于10%。结论,一元复方戊二醛消毒剂稳定性良好,对细菌繁殖体、分枝杆菌和细菌芽孢杀灭作用较强。
