Chlamydia trachomatis antigen can be detected in the urine sample of men with non-gonococcal urethritis

Summary We tested the first portion of voided urine (FVU) and urethral swab from 80 patients with nongonococcal urethritis (NGU) using a novel enzymeamplified immunoassay (IDEIA) for the detection of Chlamydia trachomatis antigen. Urine specimens were positive in all patients with positive urethral swabs (positive coincidence ratio, 100%) and in 6 of 54 patients with negative swabs (negative coincidence ratio, 88.9%). Our data suggest that FVU is suitable for the detection of Chlamydia trachomatis antigen using the IDEIA test in patients with NGU.     

Usefulness of oral wash specimens for detecting Chlamydia trachomatis from high-risk groups in Japan

Orogenital sex is recognized as a route for the transmission of Chlamydia trachomatis (CT) which thus causes male chlamydial urethritis. Patients with a pharyngeal CT infection have no gross lesions, but CT was tested by pharyngeal swabs. In this study, the usefulness of oral wash specimens for detecting CT was compared to that of swab specimens. In addition, oral wash specimens were also used to screen for CT pharyngeal infection. Eighteen female commercial sex workers in whom CT was detected from pharyngeal swabs were re-examined using both methods. The positive rate for CT was 44% by swabs and 61% by oral wash specimens. Forty-eight male students with CT-positive urine were also screened for pharyngeal CT infection. The positive rates were 6% by swabs and 10% by oral wash specimens. Our findings therefore indicate that oral wash specimens more effectively detected pharyngeal CT infection than pharyngeal swabs.     

间接免疫荧光法检测咽拭子和尿残渣麻疹病毒抗原的诊断价值

目的探讨间接免疫荧光法(IFA)检测咽拭子和尿残渣麻疹病毒抗原对儿童麻疹病毒(MV)感染的诊断价值。方法对68例怀疑为麻疹的患儿进行咽拭子和尿残渣麻疹病毒抗原检测,分析其阳性检出率,并对部分患儿进行短期随访,分析IFA方法的临床应用价值。结果 68例患儿中有62例诊断为麻疹,咽拭子、尿残渣麻疹病毒抗原的阳性检出率分别为91.9%(57/62)和96.8%(60/62),差异无统计学意义(χ2=1.363,P0.05);62例麻疹患者中有45例诊断为典型麻疹,咽拭子、尿残渣麻疹病毒抗原的阳性检出率分别为95.6%(43/45)和97.8%(44/45),差异无统计学意义(χ2=0.345,P0.05);17例诊断为非典型麻疹,咽拭子、尿残渣麻疹病毒抗原的阳性检出率别分别为82.4%(14/17)和94.1%(16/17),差异无统计学意义(χ2=1.133,P0.05);6例诊断为其他出疹性疾病。结论 IFA法检测咽拭子和尿残渣麻疹病毒抗原是一种早期、快速、敏感的实验室方法。     

DETECTION OF MYCOPLASMA GENITALIUM IN PATIENTS WITH URETHRITIS

Purpose

We attempted to detect Mycoplasma genitalium in urethral swab specimens by a polymerase chain reaction based assay to determine the prevalence of M. genitalium in patients with urethritis.

Materials and Methods

We examined a total of 171 Japanese men who presented to our hospital from February 1995 through January 1997. Of these men 150 had symptoms and signs compatible with acute urethritis and 21 had no symptoms or signs of urethritis. Urethral swab specimens were used to culture Neisseria gonorrhoeae, to detect Chlamydia trachomatis by an enzyme immunoassay and to detect M. genitalium by a polymerase chain reaction based assay.

Results

Gonococcal urethritis was diagnosed in 74 symptomatic men, and nongonococcal urethritis was diagnosed in 76 symptomatic men. Of the 74 cases of gonococcal urethritis 3 (4.1%) were positive for M. genitalium, and 14 (18.9%) were positive for C. trachomatis. Of the 76 cases of nongonococcal urethritis 10 (13.2%) were positive for M. genitalium, and 42 (55.2%) were positive for C. trachomatis. While only 1 of the 42 cases with chlamydial nongonococcal urethritis (2.4%) was positive for M. genitalium, 9 of the 34 chlamydia negative nongonococcal urethritis cases (26.5%) were positive for the mycoplasma. In contrast, all 21 cases men were negative for N. gonorrhoeae, M. genitalium, and C. trachomatis.

Conclusions

The prevalences of M. genitalium in patients with gonococcal urethritis and nongonococcal urethritis who attended our clinic were 4.1 and 13.2%, respectively. M. genitalium was detected significantly more often in men with nongonococcal urethritis than in asymptomatic men. In addition, its prevalence in men with chlamydia negative nongonococcal urethritis (26.5%) was significantly greater than in those with chlamydia positive nongonococcal urethritis (2.4%). These findings suggest that M. genitalium may be associated with the development of nongonococcal urethritis independent of C. trachomatis.     

Role of positive urethrovesical feedback in vesical evacuation. The concept of a second micturition reflex: the urethrovesical reflex

Upon feeling the urge to urinate, the urinary bladder contracts, the urethral sphincters relax and urine flows through the urethra. These actions are mediated by the micturition reflex. We investigated the hypothesis that vesical contraction is maintained by positive feedback through continuous flow of urine through the urethra, and that the cessation of urine flow aborts detrusor contraction. Normal saline was infused into the urinary bladders of 17 healthy volunteers (age 35.2 years±4.2(SD); ten women and seven men) at a rate of 100 ml/min. On urge, which occurred at a mean volume of 408.6 ml±28.7of saline, the subject micturated while the vesical and urethral pressures during voiding were being recorded; residual urine was measured. The test was repeated after anesthetizing the urethra with xylocaine gel or, on another occasion, after applying a bland gel . On micturition, the urine was evacuated as a continuous stream without straining; no residual fluid was collected. After urethral anesthetization, the fluid came out of the urethra in multiple intermittent spurts and only with excessive straining. There was a large amount of residual fluid (184.6 ml±28.4). The results of bland gel application showed no significant difference (P>0.05) from those without gel. Detrusor contraction during micturition is suggested to be maintained by positive urethrovesical feedback elicited by the continued passage of urine through the urethra. This feedback seems to be effected through the urethrovesical reflex, which produces vesical contraction on stimulation of the urethral stretch receptors. Abortion of this reflex by urethral anesthetization resulted in failure of detrusor contraction and excessive straining was needed to achieve bladder evacuation in multiple spurts. The urethrovesical reflex is thus assumed to constitute a second micturition reflex responsible for the continuation of detrusor contraction and urination. The role of this reflex in the pathogenesis of micturition disorders needs to be studied.     

Improved detection of antibodies to hepatitis C virus in dialysis patients using a second-generation enzyme immunoassay.

We tested serum samples from 99 patients undergoing maintenance hemodialysis for hepatitis C virus (HCV) antibodies using a first-generation, licensed anti-HCV enzyme immunoassay (EIA) and a second-generation anti-HCV EIA that detect three gene products c100-3, NS3, and core. Specimens that were repeatedly reactive by either or both screening assays were further evaluated by testing with supplemental EIAs and a dot blot immunoassay. There was 87.9% agreement between the licensed HCV EIA and the HCV EIA second generation. HCV EIA Second Generation detected 10 more positive specimens than HCV EIA, for an increase in detection from 33.3% (33/99) to 43.4% (43/99). We conclude that HCV EIA Second Generation improves detection of HCV infection in hemodialysis patients.     

Interstitial cystitis and the urethral syndrome: a possible answer

A study was made of 20 patients fulfilling the criteria customarily used for the diagnosis of interstitial cystitis. A possible infective aetiology was sought by culture of bladder tissue, catheter and midstream specimens of urine, and urethral swabs by methods capable of detecting fastidious bacteria as well as aerobic pathogens. All bladder biopsies showed the histological appearances usually associated with interstitial cystitis, and bacteria were isolated from the catheter specimens and/or bladder biopsies of 12 patients. Eight of these isolates were fastidious bacteria, Gardnerella vaginalis (6) and Lactobacillus sp. (2). Fastidious bacteria were isolated from the midstream specimen of urine (MSU) and/or urethral swab of 6 other patients. The correlation of the histological and bacteriological findings supports the hypothesis of an infective aetiology and suggests that the so-called urethral syndrome and interstitial cystitis may be the earlier and later stages of the same disease process. The importance of early diagnosis of infection in these patients is emphasised.     

Chlamydia trachomatis infection in male infertility--the clinical usefulness of the detection of antibodies against Chlamydia trachomatis]

BACKGROUND: The objective of this study is to investigate the clinical usefulness of the detection of antibodies against Chlamydia trachomatis (C. trachomatis) in potential male infertility patients. PATIENTS AND METHODS: Analysis of serum samples for the presence of antibodies against C. trachomatis by enzyme immunoassay was performed in 83 male infertility patients. RESULTS: Immunoglobulin A (IgA) and G (IgG)-antibodies against C. trachomatis were found in 16 and 10 of 83 serum samples (19.3 and 12.0%) respectively. IgA and/or IgG-antibodies against C. trachomatis were found in 20 of 83 serum samples (24.1%). Serum IgA, IgG, or IgA and/or IgG positive patients showed increased semen and urine leukocytes numbers and reduced semen volume and sperm numbers, compared with negative patients, respectively, although these effects are not statistically significant. By Spearman's correlation analysis, however, significant positive correlations with serum IgA or IgG antibody index were found in semen and urine leukocytes numbers. Significant negative correlations with serum IgA antibody index was found in semen volume. In serum IgA positive patients, only 1 of 8 first-voided urine samples was positive for C. trachomatis-DNA by PCR. Moreover, the positive rates of surum IgA antibody and cervical antigen in the 8 female partners of IgA positive patients were only 25% (2 of 8 serum samples) and 12.5% (1 of 8 cervical specimens) respectively. CONCLUSION: There was a high prevalence (24.1%) of serum IgA and/or IgG-antibodies against C. trachomatis from infertility patients. The existance of antibodies against C. trachomatis in serum samples possibly influence semen quality, suggesting that C. trachomatis infection may play an important role in male infertility.     

应用多聚酶链反应检测前列腺液中沙眼衣原体

从１９９４年１０月至１９９５年５月对７５例慢性前列腺炎患者应用多聚酶链反应（ＰＣＲ）技术检测其前列腺液中沙眼衣原体，并同时进行对照组的前列腺液检测。结果在前列腺液中沙眼衣原体阳性率为２６．７％，而且均为非细菌性前列腺炎。对照组均为阴性。前列腺按摩前初始尿和尿道脱落上皮细胞ＰＣＲ检测沙眼衣原体结果是前列腺液阳性者，尿及尿道上皮细胞均为阴性。本实验结果不仅表明沙眼衣原体是慢性非细菌性前列腺炎的病原体之一，而且为沙眼衣原体性前列腺炎提供了特异性诊断方法和治疗后监测手段。     

Molecular epidemiological evidence for ascending urethral infection in acute bacterial prostatitis

PURPOSE: To test the ascending urethral infection in the pathogenesis of acute bacterial prostatitis, we assessed the clonality of Escherichia coli strains isolated from urine and rectal swab of patients with acute bacterial prostatitis using molecular typing methods. MATERIALS AND METHODS: A total of 50 E. coli strains each isolated from urine and rectal swabs of 9 men with acute bacterial prostatitis at diagnosis were examined for 6 urovirulence determinant profiles and pulsed field gel electrophoresis patterns. In 1 case E. coli isolates from the rectal swab of the patient's wife were also examined at diagnosis and after 5 weeks. RESULTS: The urovirulence profile and pulsed field gel electrophoresis demonstrated that causative E. coli was monoclonal in each case, and present in the rectal swab as a predominant (96% to 100%) fecal clone in 2 and a minority clone (2% to 8%) in 4. Furthermore, causative E. coli dominated in the rectal swab of the 1 patient's wife. CONCLUSIONS: Our results are consistent with the ascending route of infection in acute bacterial prostatitis. However, causative E. coli might possibly originate from either intestinal reservoir of the host or household member. Owing to limitations of the cross-sectional design of this study, longitudinal studies are necessary to establish the ascending route of infection in this disease.     

Frequency of Chlamydia trachomatis among male patients with urethritis in northeast of Iran detected by polymerase chain reaction

Planning for appropriate preventive measures against Chlamydia trachomatis, a common cause of sexually transmitted disease, requires knowledge of prevalence of infection so that interventions can be targeted in a cost-effective manner. This study was performed on 178 male patients presenting with urethritis in the Mashhad province to determine the prevalence of chlamydial infection in Northeast Iran. A cotton swab and first voided urine specimen were collected according to standard procedures. Polymerase chain reaction (PCR) tests were used for the detection of C. trachomatis in the specimens collected and the results were analyzed using SPSS program. Results showed that 10.6% of male patients in this group were infected with C. trachomatis. This study provides strong evidence that prevalence of Chlamydia in the Northeast Iran is high and suggests that Chlamydia screening as a routine part of STD investigations is highly necessary in this area.     

Chlamydia trachomatis infection as a problem among male partners of infertile couples

Chlamydia trachomatis infection is the most common bacterial sexually transmitted disease supposed to cause urethritis, epididymitis, prostatitis and infertility in men. The objective of this study was to assess the frequency of C. trachomatis infection in male partners of infertile couples at childbearing age. Sixty infertile couples and a control group of 40 healthy volunteers were included in the study. Urethral swabs were taken from all the male participants and cervical swabs from the female partners of the infertile couples. Culturing on McCoy cell line and PCR were the methods used for detection of the infection. C. trachomatis was found in five out of the 60 male urethral samples. Three of the female partners of these five positive males were diagnosed with C. trachomatis infection, too. We registered a woman with C. trachomatis infection whose partner's samples were negative for the bacterium. The control group showed one specimen positive for C. trachomatis . The frequency of C. trachomatis infection was 8.3% in the male partners of infertile couples at childbearing age when compared with 2.5% in the control group. It is most likely that infertility in the couples with chlamydial infection was due to the pathogen studied.     

Bacteria of preoperative urinary tract infections contaminate the surgical fields and develop surgical site infections in urological operations

BACKGROUND: The risk factors for surgical site infection (SSI) following urological operations have not been clearly identified, although the presence of a preoperative urinary tract infection (UTI) is thought to be one risk factor. We studied potential risk factors to clarify when and how bacteria contaminate wounds and SSI develop. METHODS: Objects of the present study were patients with SSI after open urological operations that were performed at the Department of Urology, Miyazaki Medical College Hospital, University of Miyazaki, Kiyotake, Miyazaki, Japan, during the period between June 1999 and December 2000. Endourological operations, operations on children and short operations of less than 2 h duration were excluded. Patients were screened for the presence of UTI before the operation and subcutaneous swabs for culture were collected at the end of the operation by brushing with a sterile cotton-swab just before skin closure. RESULTS: Surgical site infections occurred in 20 of 134 patients. Bacteria from the subcutaneous swabs were detected in 15 (75.0%) of the patients with SSI. All patients received antimicrobial prophylaxis (AMP), but bacteria from the subcutaneous swabs of patients with SSI were less susceptible to the agents (20.0%). Preoperative UTI were observed in 11 (55.0%) of the patients with SSI. In these patients, four had the same species of bacteria detected from urine, swab and wound, three had the same species from swab and wound and one had the same species from urine and wound. CONCLUSIONS: Preoperative UTI was the most important risk factor for SSI following urological operations. It is most likely that the bacteria in the urine contaminated the surgical fields and the AMP resistant strains produced SSI.     

Increased incidences of multidrug-resistant gonorrhea in Taiwanese men: Experiences from a single institute

ObjectivesOur objective was to examine the detection rate of routine urine cultures and genital discharge swab cultures for the detection of gonococcal urethritis in male patients. In addition, we evaluated the results of urinalysis for gonococcal infections and investigated the drug sensitivity of Neisseria gonorrhoeae strains isolated from these patients.Materials and methodsFrom August 2009 to October 2015, 202 men diagnosed with gonococcal infection, based on the results of a urine culture or genital discharge swab culture, were enrolled in this study. Initial clinical symptoms and urinalysis results were collected. The susceptibility of N. gonorrhoeae to penicillin, cefmetazole, cefotaxime, ceftazidime, cefuroxime, ceftriaxone, and ofloxacin were determined using agar plate dilution method.ResultsThe mean age of the patients was 29.67 ± 10.39 years, and 157 of the 202 male patients (87.6%) were aged between 15 years and 34 years. We determined that the diagnostic value of genital discharge swab culture was significantly higher than that of the urine culture (90.9% vs. 67.4%, respectively). Genital or urethral discharge is the major symptom in these patients (88.89%). The susceptibility of N. gonorrhoeae to cefuroxime, cefmetazole, cefotaxime, ceftazidime, penicillin, and ciproxin revealed an increasing prevalence of resistant strains in recent years.ConclusionGenital discharge swab culture is a more effective method than urine culture to detect gonorrhea in patients with dysuria and urethral discharge. The increasing numbers of antibiotic-resistant N. gonorrhoeae strains is a major problem in treating gonococcal urethritis.     

Treatment of men with urethritis negative for Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma genitalium, Mycoplasma hominis, Ureaplasma parvum and Ureaplasma urealyticum

OBJECTIVE: Some patients with symptomatic non-gonococcal urethritis (NGU) are negative for Chlamydia trachomatis, mycoplasmas and ureaplasmas. The optimal antimicrobial chemotherapy for such NGU has not fully been elucidated, though many studies of antimicrobial chemotherapies for C. trachomatis-positive NGU have been performed. We assessed the efficacy of antimicrobial agents that are active against C. trachomatis on non-mycoplasmal, non-ureaplasmal and non-chlamydial NGU (NMNUNCNGU). METHODS: One hundred men whose first-pass urine samples were negative for C. trachomatis, Mycoplasma genitalium, Mycoplasma hominis, Ureaplasma parvum, and Ureaplasma urealyticum were treated with levofloxacin, gatifloxacin, minocycline, or clarithromycin for 7 days. Urethritis symptoms and the presence of polymorphonuclear leukocytes (PMNL) in urethral smears were assessed before and after treatment. RESULTS: Eighty-eight (88.0%) of 100 men with NMNUNCNGU showed no signs of urethral inflammation after treatment, but two men complained of some symptoms of urethritis. Twelve (12.0%) of 100 men had significant numbers of PMNL in urethral smears, but five of these 12 men had no symptoms of urethritis. The efficacy for normalization of urethral smears was 90.7% for clarithromycin, 89.7% for levofloxacin, 87.5% for gatifloxacin, and 75.0% for minocycline. The 12 men who showed signs of urethral inflammation were retreated with levofloxacin, gatifloxacin, minocycline or clarithromycin for an additional 7 days. The 10 men who returned after the second treatment had negative urethral smears. CONCLUSION: Our present findings suggest that antimicrobial agents active against C. trachomatis are effective against NMNUNCNGU and that a 7-day treatment regimen with an appropriate antimicrobial agent may be sufficient to manage patients with NMNUNCNGU.     

Chlamydia trachomatis in 'abacterial' prostatitis: microbiological, cytological and serological studies

Chlamydia trachomatis was isolated from urethral swabs after prostatic massage in patients with 'abacterial' prostatitis. After exclusion of prostatic infections by gram-negative bacteria, enterococci and ureaplasmas, in 20 of 43 patients with apparent monoinfection by C. trachomatis, a leucocytal reaction was demonstrated in prostatic secretions. By microimmunofluorescence test, antibody titers greater than or equal to 1:8 against various types of C. trachomatis were detected in these patients, whereas serology was negative in chlamydia-positive patients without increased leucocyte counts (prostatodynia).     

Prevalence of Neisseria gonorrhoeae infection in patients attending an antenatal clinic

Neisseria gonorrhoeae infection was diagnosed by culture using a selective medium (Thayer-Martin) in 140 (11.7%) of 1 200 pregnant black women attending an antenatal clinic in 1981. The study confirmed the need for specimens from three sites (endocervix, urethra and rectum)--endocervical cultures were positive in only 75.9% of infected women, in the remainder only the urethral and/or rectal cultures were positive. Rectal cultures were positive in 41.6%. Cultures of throat swabs from 200 women were all negative for N. gonorrhoeae. In comparison with endocervical specimens directly plated, high vaginal swab specimens placed in Stuart's transport medium before plating gave a lower yield of positive cultures. No penicillinase-producing N. gonorrhoeae strains were detected.     

Etiology, manifestations and therapy of acute epididymitis: prospective study of 50 cases.

There were 50 patients with acute epididymitis who were evaluated prospectively by history, examination and microbiologic studies, including cultures for aerobes, anaerobes, Neisseria gonorrhoeae, Chlamydia trachomatis and Ureaplasma urealyticum. Escherichia coli was the predominant pathogen isolated from the urine of men more than 35 years old, while Chlamydia trachomatis and Neisseria gonorrhoeae were the predominant pathogens isolated from the urethra of men less than 35 years old. The etiologic role of Escherichia coli and Chlamydia trachomatis was confirmed by isolation from epididymal aspirates from a high proportion of men with positive urine or urethral cultures for these agents. Chlamydia trachomatis epididymitis accounted for two-thirds of idiopathic epididymitis in young men and often was associated with oligospermia. Of 9 female sexual partners of men with Chlamydia trachomatis infection 6 had antibody to Chlamydia trachomatis, of whom 2 had positive cervical cultures for this organism and 2 others had non-gonococcal pelvic inflammatory disease. Antibiotic therapy with tetracycline was effective for the treatment of men with Chlamydia trachomatis epididymitis and should be offered to the female sex partners.     

Bullous lesion in the prostatic urethra: morphological change caused by putative chlamydial infection

PURPOSE: The cause of benign bullous lesions in the prostatic urethra, which we encountered in 10 patients during the last 18 years and which has not been described in literature, was studied. MATERIALS AND METHODS: Among 1,236 patients who underwent cystourethroscopy for a urological complaint 10 had bullous lesions in the prostatic urethra which were empirically thought to be inflammatory rather than tumorous lesions at initial cystourethroscopy. We retrospectively searched for common clinical characteristics for these 10 patients who had a median age of 33.5 years (range 20 to 47). The reasons for cystourethroscopy were terminal gross hematuria in 3 patients, initial gross hematuria in 1, total gross hematuria in 2, blood stain on underpants without scrotal keratoangioma in 1, hemospermia in 1 and voiding difficulty in 2. RESULTS: Based on the results of urinalysis, expressed prostatic secretion, transrectal examination of the prostate, cystourethroscopy, urethral swab test for Chlamydia trachomatis and punch biopsy of urethral mucosa with or without immunofluorescence staining with fluorescein isothiocyanate labeled monoclonal antibody for C. trachomatis, inflammation of the prostatic urethra was considered the cause of these bullous lesions. CONCLUSIONS: Bullous lesions in the prostatic urethra appear to be due to an inflammatory change. We should consider these lesions when we encounter young patients with asymptomatic gross hematuria. We should also note microscopic pyuria in such patients and subsequently perform C. trachomatis polymerase chain reaction test using urine initially as a noninvasive examination before cystourethroscopy.     

Epididymitis: aspects concerning etiology and treatment

Extended microbiological studies were performed on 49 patients with acute or chronic epididymitis, including bacteriology of epididymal specimens in cases of scrotal surgery. In no patient had instrumentation or catheterization resulted in epididymitis. The microbiological data showed a prevalence of Chlamydia trachomatis epididymal infections in men less than 40 years old, whereas common urinary tract pathogens prevailed in older patients. Cultures of urethral swabs and midstream urine provided reliable information on the type of microorganism that caused epididymitis. Ofloxacin, an antibiotic of the new quinolone group, was proved to be highly effective in the treatment of acute and chronic bacterial as well as chlamydial epididymitis.