Objective To investigate the variability of human cytomegalovirus （HCMV） UL140 open reading flame （ORF） in clinical strains, and to explore the relationship between the variability of UL140 ORF and different sympt...Objective To investigate the variability of human cytomegalovirus （HCMV） UL140 open reading flame （ORF） in clinical strains, and to explore the relationship between the variability of UL140 ORF and different symptoms of HC-MV infection. Methods HCMV UL140 ORF was amplified by polymerase chain reaction and sequenced selectedly in 30 clinical strains. Results UL140 ORF of all clinical strains was amplified successfully. Compared with that of Toledo strain, the nucleotide and amino acid sequence identities among all strains were 96.5% -100.0% and 95.2% -100. 0%, respectively. All of the nucleotide changes were substitutions. The post-translational modification sites were conserved. The result of phylogenetic tree showed that the strains did not cluster according to different clinical symptoms. Conclusion HCMV UL140 ORF in clinical strains is highly conserved, which may play an important role in HC-MV infection.展开更多
Objectives: To explore the relationship betweenquantitative Treponema pallidum DNA (TP-DNA) PCR testingand the Toludine Red Unheated Serum Test (TRUST) inpatients with syphilis before and after treatment, and evaluate...Objectives: To explore the relationship betweenquantitative Treponema pallidum DNA (TP-DNA) PCR testingand the Toludine Red Unheated Serum Test (TRUST) inpatients with syphilis before and after treatment, and evaluatethe clinical value of quantitative TP-DNA testing in thediagnosis and treatment evaluation of syphilis. Methods: 29 patients with primary (12 cases) or secondary(17 cases) syphilis, who met the criteria set for this study wererecruited as subjects. All patients were treated with 2.4 millionunits benzathine penicillin IM weekly for 3 weeks.Quantitative tests of TP-DNA in the patients' plasma wereperformed using FQ-PCR before and after the treatment.Serologic tests including TRUST and TPPA were alsoperformed. Results: Before the treatment, 9 out of 12 primary syphilispatients (75%) and all secondary syphilis patients (17/17)tested positive for Treponema pallidum (TP) by TP-DNAtesting. The average quantitative test values of TP-DNA inprimary and secondary syphilis patients were (3.38±2.34)×10~4and (5.73±1.33)×10~6 copies/ml, respectively. After threemonths of treatment, 1 of the 9 primary and 5 out of 17secondary syphilis patients were positive upon TP-DNAtesting, respectively. The average quantities of TP-DNA were2.01×10~2 copies/ml in primary and 5.87×10~2 copies/ml insecondary syphilis patients with positive TRUST and TP-DNAtests, and 3.09×10~2 copies/ml for those with negative TRUSTrespectively. After nine months of treatment, all the primaryand secondary syphilis patients were negative upon TP-DNAtesting, while all primary and 14 of 17 (82.35%) secondarysyphilis patients showed negative TRUST results. Conclusion: That the results of TP-DNA tests are notconsistent with those or TRUST before and after treatmentindicates that quantitative TP-DNA testing may have valuableclinical significance in the early diagnosis and evaluation oftreatment regimens for syphilis.展开更多
Objective: To study the occurrence and development ofprimary syphilis from a morphological and structural aspect.Method: The ultrastructural pathological changes of syphiliticchancre were examined by transmission elec...Objective: To study the occurrence and development ofprimary syphilis from a morphological and structural aspect.Method: The ultrastructural pathological changes of syphiliticchancre were examined by transmission electron microscopy(TEM). Results: The pathological changes of syphilitic chancreoccur mainly in the dermal layer, manifested as partialthinning or lysis of the capillary basal membrane,proliferation of capillary endothelial cells, thickening of somecollagen fibers and rupture of collagen fibers surrounding Tpallidum, structural disruption of the axons of terminal nerves,disarrangement of the sheath of the myelinated nerve fiberswith separation of laminae and the attachment of T pallidumon its outer membrane, appearance of slightly swollen Tpallidum in the plasma of the capillary endothelial cells andfibroblasts, and infiltration of neutrophils, macrophages andplasma cells containing T pallidum and its debris frequentlylined by a clear sheath. Conclusion: The pathogenesis and injury of mechanism inprimary syphilis can be explained morphologically by itscharacteristic ultrastructural pathological changes.展开更多
Objectives: To characterize the distribution pattern of biovars and scrotypes or Ureaplasma urealyyicum in normalhealthy women, sexually transmitted infections clinic clients,and in sex workers. Methods: We cultured c...Objectives: To characterize the distribution pattern of biovars and scrotypes or Ureaplasma urealyyicum in normalhealthy women, sexually transmitted infections clinic clients,and in sex workers. Methods: We cultured cervical swabs taken from 261physical check-up clients, 599 STI clinic outpatients and 98 sexworkers using commercial selective medium. Some positivecultures were further biotyped and serotyped by PCR. Results: (1) U. urealyticum is more commonly isolated in sexworkers (90.8%) than in the physical check-up group (60.9%)or the STI outpatient group (61.3%) (P<0.001). (2) Biovar 1of U. 'realyticum (95.0%), especially single infection ofserotype 1. 3, and 6 of biovar 1, is commonly found in healthywomen. (3) Biovar 2 infection of U urealyticum is moreprevalent in sex workers (28.1%) and STI outpatients group(26.6%) than that in the physical check-up group (4.9%) (P<0.001). (4) Mixed infection caused by more than one serotypeof U urealyticum increased from physical check-up group(8.6%) to STI utpatients (12.4%) to sex workers (23.9%) (P<0.01). (5) There is no statistically significant difference in thedistribution of serotype 1, 3, and 6 of biovar 1 among thesethree groups (P=0.763). (6) The PCR method described here isrelatively simple, rapid and specific for the biotyping andserotyping of biovar 1 of U urealyticum. Conclusion: We should pay more attention to biovar 2 andmixed infections of U. urealyticum than single infection ofhiovar 1 in clinic practice. PCR is a good method for biotypingand serotvping.展开更多
In order to acknowledge the multi-infectiondata of STD patients and improve the prophylaxis andtherapy for STDs, 297 patients and 30 healthy people wereexamined using the HSV-2 plasma antibody. The resultsshowed that ...In order to acknowledge the multi-infectiondata of STD patients and improve the prophylaxis andtherapy for STDs, 297 patients and 30 healthy people wereexamined using the HSV-2 plasma antibody. The resultsshowed that all kinds of STD patients were infected byHSV-2 in different ratios, the highest ratio occurring insyphilis patients.展开更多
A 29-year-old man was admitted for erythema, papules and erosions. Erosions and purulent secretions were seen in the circumference of the mouth, eyes, oral mucosa,tongue, and preputium. Conjunctivas were swollen and t...A 29-year-old man was admitted for erythema, papules and erosions. Erosions and purulent secretions were seen in the circumference of the mouth, eyes, oral mucosa,tongue, and preputium. Conjunctivas were swollen and the urethral orifice was red, both were accompanied by purulent secretions. Multiple vesicles were shown in the penis.The patient was diagnosed with:①Stevens-Johnsonsyndrome;②gonococcal ophthalmoblennorrhea;③nongonococcal urethritis, gonococcal urethritis;④genital herpes;⑤mediastinal tumor.展开更多
基金Supported by the National Natural Science Foundation of China(30170986)
文摘Objective To investigate the variability of human cytomegalovirus （HCMV） UL140 open reading flame （ORF） in clinical strains, and to explore the relationship between the variability of UL140 ORF and different symptoms of HC-MV infection. Methods HCMV UL140 ORF was amplified by polymerase chain reaction and sequenced selectedly in 30 clinical strains. Results UL140 ORF of all clinical strains was amplified successfully. Compared with that of Toledo strain, the nucleotide and amino acid sequence identities among all strains were 96.5% -100.0% and 95.2% -100. 0%, respectively. All of the nucleotide changes were substitutions. The post-translational modification sites were conserved. The result of phylogenetic tree showed that the strains did not cluster according to different clinical symptoms. Conclusion HCMV UL140 ORF in clinical strains is highly conserved, which may play an important role in HC-MV infection.
文摘Objectives: To explore the relationship betweenquantitative Treponema pallidum DNA (TP-DNA) PCR testingand the Toludine Red Unheated Serum Test (TRUST) inpatients with syphilis before and after treatment, and evaluatethe clinical value of quantitative TP-DNA testing in thediagnosis and treatment evaluation of syphilis. Methods: 29 patients with primary (12 cases) or secondary(17 cases) syphilis, who met the criteria set for this study wererecruited as subjects. All patients were treated with 2.4 millionunits benzathine penicillin IM weekly for 3 weeks.Quantitative tests of TP-DNA in the patients' plasma wereperformed using FQ-PCR before and after the treatment.Serologic tests including TRUST and TPPA were alsoperformed. Results: Before the treatment, 9 out of 12 primary syphilispatients (75%) and all secondary syphilis patients (17/17)tested positive for Treponema pallidum (TP) by TP-DNAtesting. The average quantitative test values of TP-DNA inprimary and secondary syphilis patients were (3.38±2.34)×10~4and (5.73±1.33)×10~6 copies/ml, respectively. After threemonths of treatment, 1 of the 9 primary and 5 out of 17secondary syphilis patients were positive upon TP-DNAtesting, respectively. The average quantities of TP-DNA were2.01×10~2 copies/ml in primary and 5.87×10~2 copies/ml insecondary syphilis patients with positive TRUST and TP-DNAtests, and 3.09×10~2 copies/ml for those with negative TRUSTrespectively. After nine months of treatment, all the primaryand secondary syphilis patients were negative upon TP-DNAtesting, while all primary and 14 of 17 (82.35%) secondarysyphilis patients showed negative TRUST results. Conclusion: That the results of TP-DNA tests are notconsistent with those or TRUST before and after treatmentindicates that quantitative TP-DNA testing may have valuableclinical significance in the early diagnosis and evaluation oftreatment regimens for syphilis.
文摘Objective: To study the occurrence and development ofprimary syphilis from a morphological and structural aspect.Method: The ultrastructural pathological changes of syphiliticchancre were examined by transmission electron microscopy(TEM). Results: The pathological changes of syphilitic chancreoccur mainly in the dermal layer, manifested as partialthinning or lysis of the capillary basal membrane,proliferation of capillary endothelial cells, thickening of somecollagen fibers and rupture of collagen fibers surrounding Tpallidum, structural disruption of the axons of terminal nerves,disarrangement of the sheath of the myelinated nerve fiberswith separation of laminae and the attachment of T pallidumon its outer membrane, appearance of slightly swollen Tpallidum in the plasma of the capillary endothelial cells andfibroblasts, and infiltration of neutrophils, macrophages andplasma cells containing T pallidum and its debris frequentlylined by a clear sheath. Conclusion: The pathogenesis and injury of mechanism inprimary syphilis can be explained morphologically by itscharacteristic ultrastructural pathological changes.
文摘Objectives: To characterize the distribution pattern of biovars and scrotypes or Ureaplasma urealyyicum in normalhealthy women, sexually transmitted infections clinic clients,and in sex workers. Methods: We cultured cervical swabs taken from 261physical check-up clients, 599 STI clinic outpatients and 98 sexworkers using commercial selective medium. Some positivecultures were further biotyped and serotyped by PCR. Results: (1) U. urealyticum is more commonly isolated in sexworkers (90.8%) than in the physical check-up group (60.9%)or the STI outpatient group (61.3%) (P<0.001). (2) Biovar 1of U. 'realyticum (95.0%), especially single infection ofserotype 1. 3, and 6 of biovar 1, is commonly found in healthywomen. (3) Biovar 2 infection of U urealyticum is moreprevalent in sex workers (28.1%) and STI outpatients group(26.6%) than that in the physical check-up group (4.9%) (P<0.001). (4) Mixed infection caused by more than one serotypeof U urealyticum increased from physical check-up group(8.6%) to STI utpatients (12.4%) to sex workers (23.9%) (P<0.01). (5) There is no statistically significant difference in thedistribution of serotype 1, 3, and 6 of biovar 1 among thesethree groups (P=0.763). (6) The PCR method described here isrelatively simple, rapid and specific for the biotyping andserotyping of biovar 1 of U urealyticum. Conclusion: We should pay more attention to biovar 2 andmixed infections of U. urealyticum than single infection ofhiovar 1 in clinic practice. PCR is a good method for biotypingand serotvping.
文摘In order to acknowledge the multi-infectiondata of STD patients and improve the prophylaxis andtherapy for STDs, 297 patients and 30 healthy people wereexamined using the HSV-2 plasma antibody. The resultsshowed that all kinds of STD patients were infected byHSV-2 in different ratios, the highest ratio occurring insyphilis patients.
文摘A 29-year-old man was admitted for erythema, papules and erosions. Erosions and purulent secretions were seen in the circumference of the mouth, eyes, oral mucosa,tongue, and preputium. Conjunctivas were swollen and the urethral orifice was red, both were accompanied by purulent secretions. Multiple vesicles were shown in the penis.The patient was diagnosed with:①Stevens-Johnsonsyndrome;②gonococcal ophthalmoblennorrhea;③nongonococcal urethritis, gonococcal urethritis;④genital herpes;⑤mediastinal tumor.
