OBJECTIVE: To study the resistance mechanism of clinical isolates of Ureaplasma urealyticum resistant to fluoroquinolones. METHODS: Thirteen isolates of Ureaplasma urealyticum resistant to six fluoroquinolones were se...OBJECTIVE: To study the resistance mechanism of clinical isolates of Ureaplasma urealyticum resistant to fluoroquinolones. METHODS: Thirteen isolates of Ureaplasma urealyticum resistant to six fluoroquinolones were selected out of 184 clinical isolates and their QRDRs (quinolone resistance-determining region) gyrA, gyrB, parC and parE were amplified by PCR. Sequencing results were compared to those susceptible reference strains and a comparison of deduced amino acid sequences were performed. RESULTS: Sequence comparison revealed a C to A change at 87nt of gyrA QRDR leading to the substitution of Asp95 with glutamic acid and a C to T change at 50nt of parC QRDR leading to the substitution of Ser80 with leucine. CONCLUSION: These results suggest that a C to A change at 87nt of gyrA QRDR and a C to T change at 50nt of parC QRDR are associated with fluoroquinolone resistance of Ureaplasma urealyticum.展开更多
Single-atom nanozymes(SANs)are the new emerging catalytic nanomaterials with enzyme-mimetic activities,which have many extraordinary merits,such as low-cost preparation,maximum atom utilization,ideal catalytic activit...Single-atom nanozymes(SANs)are the new emerging catalytic nanomaterials with enzyme-mimetic activities,which have many extraordinary merits,such as low-cost preparation,maximum atom utilization,ideal catalytic activity,and optimized selectivity.With these advantages,SANs have received extensive research attention in the fields of chemistry,energy conversion,and environmental purification.Recently,a growing number of studies have shown the great promise of SANs in biological applications.In this article,we present the most recent developments of SANs in anti-infective treatment,cancer diagnosis and therapy,biosensing,and antioxidative therapy.This text is expected to better guide the readers to understand the current state and future clinical possibilities of SANs in medical applications.展开更多
BACKGROUND The degree of psychological stress and the difficulty and efficacy of laparoscopic surgery differ in patients with pelvic abscesses after different durations of antiinfection treatment.AIM To compare and an...BACKGROUND The degree of psychological stress and the difficulty and efficacy of laparoscopic surgery differ in patients with pelvic abscesses after different durations of antiinfection treatment.AIM To compare and analyse the effects of different durations of anti-infective therapy on patients’preoperative psychological stress level and the clinical efficacy of laparoscopic surgery in patients with pelvic abscesses to offer a reference for the selection of therapy plans.METHODS A total of 100 patients with pelvic abscesses who were admitted to the Department of Gynecology of Suzhou Ninth Hospital affiliated to Soochow University(Suzhou Ninth People's Hospital)from January 2018 to December 2022 were retrospectively enrolled.According to the different durations of antiinfective therapy,they were divided into Group S(50 patients,received antiinfective therapy for 24-48 h)and Group L(50 patients,received anti-infective therapy for 48-96 h).Baseline data,state-trait anxiety score at admission and before surgery,self-rating anxiety scale(SAS)+self-rating depression scale(SDS)score,surgery time,adhesion grading score,intraoperative blood loss,presence or absence of intraoperative intestinal injury,ureteral injury or bladder injury,postoperative body temperature,length of hospital stay,and presence or absence of recurrence within 3 mo after surgery,chronic pelvic pain,incision infection,dysmenorrhea,menstrual disorder or intestinal obstruction were compared between the S group and the L group.RESULTS There was no significant difference in the background data between the S group and the L group(P<0.05).There was no significant difference in the state-trait anxiety score or SAS+SDS score between the S group and the L group on admission(P<0.05).The state-trait anxiety score and SAS+SDS score of the S group were lower than those of Group L after receiving different durations of anti-infective therapy(P<0.05).There was no significant difference in the incidence of intestinal,ureteral or bladder injury between the S group a展开更多
目的为儿童非伤寒沙门菌(NTS)胃肠炎抗感染治疗提供参考。方法采用计算机检索PubMed,Web of Science,The Cochrane Library和中国知网数据库中自建库起至2023年12月的儿童NTS胃肠炎抗感染治疗相关文献,从NTS的微生物学特点、流行病学、...目的为儿童非伤寒沙门菌(NTS)胃肠炎抗感染治疗提供参考。方法采用计算机检索PubMed,Web of Science,The Cochrane Library和中国知网数据库中自建库起至2023年12月的儿童NTS胃肠炎抗感染治疗相关文献,从NTS的微生物学特点、流行病学、耐药性及抗感染治疗方案进行总结。结果儿童是NTS感染的高危人群;在非免疫缺陷情况下,儿童NTS胃肠炎感染程度通常较轻,具有自限性,无须治疗;重度感染、新生儿和低于3月龄、先天性或医源性免疫缺陷患儿需抗感染治疗。目前,第3代头孢菌素、喹诺酮类和大环内酯类抗菌药物为主要治疗药物,具体用法用量应遵循相关指南,疗程以7~10 d为宜。结论应严格把握儿童NTS胃肠炎抗感染治疗指征,制订合理的抗感染治疗方案,以规范抗菌药物的合理使用,遏制细菌耐药。展开更多
文摘OBJECTIVE: To study the resistance mechanism of clinical isolates of Ureaplasma urealyticum resistant to fluoroquinolones. METHODS: Thirteen isolates of Ureaplasma urealyticum resistant to six fluoroquinolones were selected out of 184 clinical isolates and their QRDRs (quinolone resistance-determining region) gyrA, gyrB, parC and parE were amplified by PCR. Sequencing results were compared to those susceptible reference strains and a comparison of deduced amino acid sequences were performed. RESULTS: Sequence comparison revealed a C to A change at 87nt of gyrA QRDR leading to the substitution of Asp95 with glutamic acid and a C to T change at 50nt of parC QRDR leading to the substitution of Ser80 with leucine. CONCLUSION: These results suggest that a C to A change at 87nt of gyrA QRDR and a C to T change at 50nt of parC QRDR are associated with fluoroquinolone resistance of Ureaplasma urealyticum.
文摘Single-atom nanozymes(SANs)are the new emerging catalytic nanomaterials with enzyme-mimetic activities,which have many extraordinary merits,such as low-cost preparation,maximum atom utilization,ideal catalytic activity,and optimized selectivity.With these advantages,SANs have received extensive research attention in the fields of chemistry,energy conversion,and environmental purification.Recently,a growing number of studies have shown the great promise of SANs in biological applications.In this article,we present the most recent developments of SANs in anti-infective treatment,cancer diagnosis and therapy,biosensing,and antioxidative therapy.This text is expected to better guide the readers to understand the current state and future clinical possibilities of SANs in medical applications.
文摘BACKGROUND The degree of psychological stress and the difficulty and efficacy of laparoscopic surgery differ in patients with pelvic abscesses after different durations of antiinfection treatment.AIM To compare and analyse the effects of different durations of anti-infective therapy on patients’preoperative psychological stress level and the clinical efficacy of laparoscopic surgery in patients with pelvic abscesses to offer a reference for the selection of therapy plans.METHODS A total of 100 patients with pelvic abscesses who were admitted to the Department of Gynecology of Suzhou Ninth Hospital affiliated to Soochow University(Suzhou Ninth People's Hospital)from January 2018 to December 2022 were retrospectively enrolled.According to the different durations of antiinfective therapy,they were divided into Group S(50 patients,received antiinfective therapy for 24-48 h)and Group L(50 patients,received anti-infective therapy for 48-96 h).Baseline data,state-trait anxiety score at admission and before surgery,self-rating anxiety scale(SAS)+self-rating depression scale(SDS)score,surgery time,adhesion grading score,intraoperative blood loss,presence or absence of intraoperative intestinal injury,ureteral injury or bladder injury,postoperative body temperature,length of hospital stay,and presence or absence of recurrence within 3 mo after surgery,chronic pelvic pain,incision infection,dysmenorrhea,menstrual disorder or intestinal obstruction were compared between the S group and the L group.RESULTS There was no significant difference in the background data between the S group and the L group(P<0.05).There was no significant difference in the state-trait anxiety score or SAS+SDS score between the S group and the L group on admission(P<0.05).The state-trait anxiety score and SAS+SDS score of the S group were lower than those of Group L after receiving different durations of anti-infective therapy(P<0.05).There was no significant difference in the incidence of intestinal,ureteral or bladder injury between the S group a
