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Biomedical subjects

K K Holmes

Publications and source records attributed to K K Holmes.

At least 73 records · Page 4Linked to original sources

Syndromic management of STDs in pharmacies: evaluation and randomised intervention trial.

BACKGROUND: Improved clinic based syndromic management of sexually transmitted diseases (STDs) in Tanzania reduced HIV transmission. However, in many developing countries, people seek STD treatment in pharmacies. This study used standardised simulated patients (SSP) to assess STD syndromic management in pharmacies and evaluate the impact of an educational intervention. METHODS: SSP presented syndromes of urethral discharge, genital ulcer, vaginal discharge, and pelvic inflammatory disease (PID) at 180 randomly selected pharmacies in Lima, Peru. These pharmacies were then randomised to receive or not receive education on STD recognition, management, and prevention counselling, and were again visited by SSP. RESULTS: At 360 pharmacy visits before the intervention, syndromes most often recognised as STD related were genital ulcer (81%) and urethral discharge (73%) in men, followed by vaginal discharge (43%) and PID (6%) in women. Treatments offered to 82.5% of SSP rarely conformed to international or national guidelines (for urethral discharge, 1.5%; genital ulcer, 1%; vaginal discharge, 4%; and PID, none). Only 20.5% of SSP were referred to a physician and 30% received any counselling. The intervention reached 55% of pharmacies, and produced a small but significant increase in counselling; by "intent to intervene" analysis, intervention pharmacies provided post-counselling more often than did controls (40% v 27%, p = 0.01). CONCLUSION: Pharmacies usually failed to recognise STD syndromes in women, and usually provided treatment, most often with ineffective regimens. Educational interventions improved counselling. More effective interventions are needed to improve STD recognition, treatment, and referral practices.

Adolescent↗

Genomic variation of human papillomavirus type 16 and risk for high grade cervical intraepithelial neoplasia.

BACKGROUND: Epidemiologic studies have demonstrated strong and consistent associations between the detection of human papillomavirus (HPV) type 16 DNA and the risk of cervical intraepithelial neoplasia (CIN) and cervical cancer. However, HPV16 is also the most common type of HPV in the normal population, and only a minority of women with HPV16 infection develop cervical cancer. Studies of genomic heterogeneity in HPV16 have demonstrated the presence of multiple variant forms in all human populations examined to date. It is conceivable that the natural variants of HPV16 in a given population may not have the same biologic behavior. PURPOSE: This study was designed to determine the association between natural variants of HPV16 and the risk of biopsy-confirmed CIN 2 or 3, the most important precancerous lesions of the uterine cervix. METHODS: Prospective studies were conducted among 1) women attending a university and 2) women presenting to a sexually transmitted disease clinic. Subjects were eligible for inclusion in this investigation if the initial cytologic findings did not reveal CIN 2-3 and HPV16 DNA was detected by means of a polymerase chain reaction (PCR)-based method in one or more cervical or vulvovaginal samples. Eligible subjects were followed every 4 months with cervical Pap smears and colposcopic examinations. Women were referred for biopsy if cytology or colposcopy suggested CIN 2-3. Two groups of HPV16 variants, prototype-like and nonprototype-like, were determined by means of single-strand conformation polymorphism (SSCP) analysis of PCR products from the noncoding region of the viral genome. Representative SSCP patterns from HPV16 variants were further characterized by direct DNA sequencing of the PCR products. Relative risks (RRs) and 95% confidence intervals (CIs) were calculated by Cox regression analysis. RESULTS: Prototype-like variants accounted for 79% of the HPV16 detected in university students and 86% of the virus detected in patients presenting to the sexually transmitted disease clinic. CIN 2-3 was confirmed by biopsy in nine of 57 HPV16-positive women attending the university and in 10 of 66 HPV16-positive women presenting to the sexually transmitted disease clinic. Among university students, those with HPV16 nonprototype-like variants were 6.5 (95% CI = 1.6-27.2) times more likely to develop CIN 2-3 than those with prototype-like variants. A similar association was observed among women presenting to the sexually transmitted disease clinic (RR = 4.5; 95% CI = 0.9-23.8). CONCLUSIONS: This study suggests that the risk of developing CIN 2-3 is not the same with all variants of HPV16 and that nonprototype-like variants confer a greater risk compared with prototype-like variants. The important genomic differences underlying this increased risk of CIN 2-3 remain to be determined.

Adolescent↗

Acute pelvic inflammatory disease: associations of clinical and laboratory findings with laparoscopic findings.

OBJECTIVE: To assess the relation of clinical variables and laboratory data to pelvic laparoscopic observations of tubal occlusion, adnexal adhesions, and peritoneal exudate in women with acute salpingitis. METHODS: Clinical and laboratory evaluations were performed systematically before laparoscopy in 155 women with suspected acute pelvic inflammatory disease (PID), 82% of whom proved to have acute salpingitis confirmed with laparoscopy. Laparoscopic findings were scored in three categories (tubal patency, adhesions, and exudate.) RESULTS: Two general categories of laparoscopic findings were present: 1) tubal occlusion and moderate to severe adhesions in 30 women, and 2) pelvic-abdominal exudate in 27 women. In the remaining 16 women, these laparoscopic findings occurred alone or in other combinations. Among women with acute salpingitis, tubal occlusion was associated positively with older age, palpable adnexal mass, and moderate to severe pelvic adhesions; negative associations were found with abdominal rebound tenderness, mean abdominal-pelvic tenderness score, pelvic-abdominal exudate, and isolation of either Neisseria gonorrhoeae or Chlamydia trachomatis. Moderate or severe pelvic adhesions were associated positively with increased duration of abdominal pain (5 versus 3 days) compared with limited or no pelvic adhesions, but they were associated negatively with mean abdominal-pelvic tenderness score and with pelvic-abdominal exudate (47% versus 73%). Free exudate in the pelvis or abdomen as compared with limited or no exudate was associated positively with abdominal rebound tenderness (86% versus 65%), abdominal-pelvic tenderness score, elevated white blood cell count (83% versus 52%), and recovery of N gonorrhoeae (79% versus 57%). Free exudate was associated negatively with the median duration of pain (3 versus 6 days), oral contraceptive use (4% versus 26%), and palpable adnexal mass (7% versus 25%). Analyses limited to women without a history of PID gave similar results. CONCLUSIONS: Although clinical and laboratory criteria traditionally used to judge the clinical severity of acute PID partially predict the degree of tubal or other pelvic abnormalities among women with acute salpingitis and tend to distinguish those with tubal occlusion or moderate to severe adhesions from those with peritonitis, these criteria have low predictive value and are not reliable in the individual patient.

Acute Disease↗

Antimicrobial resistance in Neisseria gonorrhoeae in the United States, 1988-1994: the emergence of decreased susceptibility to the fluoroquinolones.

Antimicrobial susceptibilities of Neisseria gonorrhoeae have been prospectively determined in the Gonococcal Isolate Surveillance Project of the Centers for Disease Control and Prevention. From 1988 through 1994, susceptibilities were determined for 35,263 isolates from 27 clinics. Patients were demographically similar to those in nationally reported gonorrhea cases. In 1994, 30.5% of isolates had chromosomally or plasmid-mediated resistance to penicillin or tetracycline. Penicillin resistance increased from 1988 (8.4%) to 1991 (19.5%) and then decreased in 1994 (15.6%). Tetracycline resistance decreased from 1988 (23.4%) to 1989 (17.3%) and then increased in 1994 (21.7%). Most isolates (99.9%) were highly susceptible to broad-spectrum cephalosporins. Isolates with decreased susceptibility to ciprofloxacin increased from 1991 (0.4%) to 1994 (1.3%); 4 isolates were ciprofloxacin-resistant. Ciprofloxacin-resistant strains may not respond to therapy with recommended doses of fluoroquinolones, and the clinical importance of strains with decreased susceptibility is unknown. The emergence of fluoroquinolone resistance in N. gonorrhoeae in the United States threatens the future utility of this class of antimicrobials for gonorrhea therapy.

Adult↗

Genomic homogeneity of the AHU/IA-1,2 phenotype of Neisseria gonorrhoeae during its disappearance from an urban population.

BACKGROUND: Isolates of Neisseria gonorrhoeae requiring arginine, hypoxanthine, and uracil (AHU) appeared in Denmark in 1946, were preponderant in Seattle during the 1970s, were associated with disseminated gonococcal infections (DGI), and were primarily of the IA-1,2 serovar. GOALS: To investigate the disappearance of the AHU/IA-1,2 phenotype and to examine by pulsed-field gel electrophoresis (PFGE) the genomic homogeneity of this unique phenotype isolated from Seattle-King County during the past decade. STUDY DESIGN: This retrospective study used data extracted from previous publications for the period 1971 through 1984, and from existing records at the Neisseria Reference Laboratory, University of Washington for the period 1985 through 1996. Samples (n = 68) of AHU/IA-1,2 isolates from 1984 to 1985 and 1988 to 1993 were analyzed using endonucleases NheI and XbaI. For comparison, 10 AHU/IB isolates were included in the study. RESULTS: AHU isolates, predominantly IA-1,2 strains accounted for 52% of the gonococcal isolates for the period 1971 through 1974, 40% for 1974 through 1976, 16% for 1984, and then declined from 7% in 1986 to 0% for each of the last 3 years, 1994 through 1996. Isolates with < or = 1 band difference after digestion with either NheI or XbaI were considered to belong to a single closely related pattern. Pulsed-field gel electrophoresis (PFGE) type designation was made from the combination of NheI and XbaI patterns. These criteria yielded 5 NheI and 8 XbaI PFGE patterns, and 11 PFGE types based on the combination of NheI and XbaI pattern. The most frequently occurring NheI and XbaI patterns accounted for 74% and 57% of isolates, respectively. One type persisted throughout the decade and accounted for 54% of the 68 isolates. Analysis of the 10 AHU/IB isolates yielded 7 NheI and 8 XbaI patterns that gave 9 types that were distinct from the types found in the AHU/IA-1,2 strains. CONCLUSION: The AHU/IA-1,2 phenotype first documented 50 years ago in Denmark still shows a high degree of genomic homogeneity during the past decade in Seattle. The implementation of screening, decreased rates of sexual exposure in the acquired immune deficiency syndrome era, or other factors may explain its apparent elimination in Seattle-King County.

Electrophoresis, Gel, Pulsed-Field↗

High HIV prevalence, low condom use and gender differences in sexual behaviour among patients with STD-related complaints at a Nairobi primary health care clinic.

Of 22,274 patients > or = 12 years old attending a Nairobi primary health care (PHC) clinic, 1076 (4.8%) had STD-related complaints, of whom 980 underwent assessment of risk factors for human immunodeficiency virus (HIV) infection and infrequent condom use. Gonorrhoea, chancroid, syphilis seroactivity, trichomoniasis, or objective signs of STD were found in 78%, and HIV seropositivity in 15% of men and 19% of women. Most women were married, living with a spouse; while most men were single, or married, but living separated from a spouse. Among married men, last sex was with a female sex worker (FSW) or casual partner for 60% not living with a spouse and 26% living with a spouse (P<0.005). Two or more partners during the past year were reported by 82% of men and 25% of women (P <0.001), and 55% of men and 11% of women reported the last partner was high risk. HIV seropositivity among both genders was associated with numbers of partners, and among women, with being widowed or divorced. Only 3% reported use of a condom with the last partner. Among men whose last sex was with a FSW, 74% said the reason for not using a condom was not having one. Thus, infrequent condom use, low condom availability, and gender differences in behaviour necessitate modifying development policies that separate families; and better coordination between family planning, PHC, and AIDS/STD programmes, with improved supply, social marketing and community-based distribution of condoms in high-risk settings for STD/HIV prevention.

Adolescent↗

Bacterial infections in adult patients hospitalized with AIDS: case-control study of prophylactic efficacy of trimethoprim-sulfamethoxazole versus aerosolized pentamidine.

To determine the association between trimethoprim-sulfamethoxazole (TMP-SMX) prophylaxis for Pneumocystis carinii pneumonia and risk of bacterial infections in persons with AIDS, we abstracted hospital records from 6496 adult admissions to 42 hospitals in western Washington state. Of these admissions, 570 involved 637 bacterial infections diagnosed among patients who had been prescribed prophylactic TMP-SMX or aerosolized pentamidine. Cases [admissions with bacteraemia, bacterial pneumonia, acute or chronic sinusitis, or urinary tract infection (UTI)] were compared to controls (admissions not associated with any of the 5 bacterial infections). After adjusting for CD4 lymphocyte count and presence of P. carinii pneumonia, TMP-SMX prophylaxis, relative to aerosolized pentamidine prophylaxis, was associated with a reduced risk of bacteraemia (adjusted OR = 0.5; 95% CI, 0.2-1.0; P = 0.04), bacterial pneumonia (adjusted OR = 0.5; 95% CI, 0.3-0.8; P = 0.01), acute sinusitis (adjusted OR = 0.5; 95% CI, 0.2-1.3; P = 0.2), chronic sinusitis (adjusted OR = 0.3; 95% CI, 0.1-0.7; P = 0.01), and UTI (adjusted OR = 0.5; 95% CI, 0.2-1.2; P = 0.1), and all 5 bacterial infections combined (adjusted OR = 0.6; 95% CI, 0.5-0.8; P < 0.001).

AIDS-Related Opportunistic Infections↗

Prevention of pelvic inflammatory disease by screening for cervical chlamydial infection.

BACKGROUND: Chlamydia trachomatis is a frequent cause of pelvic inflammatory disease. However, there is little information from clinical studies about whether screening women for cervical chlamydial infection can reduce the incidence of this serious illness. METHODS: We conducted a randomized, controlled trial to determine whether selective testing for cervical chlamydial infection prevented pelvic inflammatory disease. Women who were at high risk for disease were identified by means of a questionnaire mailed to all women enrollees in a health maintenance organization who were 18 to 34 years of age. Eligible respondents were randomly assigned to undergo testing for C. trachomatis or to receive usual care; both groups were followed for one year. Possible cases of pelvic inflammatory disease were identified through a variety of data bases and were confirmed by review of the women's medical records. We used an intention-to-screen analysis to compare the incidence of pelvic inflammatory disease in the two groups of women. RESULTS: Of the 2607 eligible women, 1009 were randomly assigned to screening and 1598 to usual care. A total of 645 women in the screening group (64 percent) for chlamydia; 7 percent tested positive and were treated. At the end of the follow-up period, there had been 9 verified cases of pelvic inflammatory disease among the women in the screening group and 33 cases among the women receiving usual care (relative risk, 0.44; 95 percent confidence interval, 0.20 to 0.90). We found similar results when we used logistic-regression analysis to control for potentially confounding variables. CONCLUSIONS: A strategy of identifying, testing, and treating women at increased risk for cervical chlamydial infection was associated with a reduced incidence of pelvic inflammatory disease.

Adolescent↗

Role of bacterial vaginosis-associated microorganisms in endometritis.

OBJECTIVE: Our goal was to define the role of bacterial vaginosis and bacterial vaginosis-associated microorganisms in endometritis. STUDY DESIGN: Endometrial biopsies were obtained for histologic and microbiologic study from 178 consecutive women with suspected pelvic inflammatory disease, and 85 of them underwent laparoscopy to diagnose salpingitis. RESULTS: Histologic endometritis was confirmed in 117 (65%) of the women. Among women who underwent laparoscopy, salpingitis was present in 68% of those with and 23% of those without endometritis. Some but not all bacterial vaginosis-associated microorganisms were linked with endometritis. By logistic regression analysis, after adjustment for bacterial vaginosis and isolation of Neisseria gonorrhoeae and Chlamydia trachomatis, endometritis was associated with endometrial N. gonorrhoeae (odds ratio 5.7, 95% confidence interval 1.8 to 17.5), C. trachomatis (odds ratio 4.8, 95% confidence interval 1.3 to 18.2), anaerobic gram-negative rods (odds ratio 2.6, 95% confidence interval 1.1 to 5.7), and nonwhite race (odds ratio 2.3, 95% confidence interval 1.1 to 4.8). CONCLUSIONS: The association of anaerobic gram-negative rods with endometritis, after adjustment for bacterial vaginosis, N. gonorrhoeae, and C. trachomatis, supports the role of these microorganisms in the etiology of histologic endometritis among women with clinically suspected pelvic inflammatory disease.

Adult↗

Hydrogen peroxide-producing lactobacilli and acquisition of vaginal infections.

This cohort study of 182 women attending a sexually transmitted disease clinic evaluated the hypothesis that women colonized by lactobacilli have decreased acquisition of vaginal infections. During a 2-year follow-up, 50 women acquired bacterial vaginosis (BV), 25 acquired symptomatic vulvovaginal candidiasis (VVC), and 7 acquired vaginal trichomoniasis. By multivariate analysis, utilizing Cox proportional hazards modeling with time-dependent covariates, acquisition of BV was independently associated with lack of vaginal H2O2-producing lactobacilli (hazard ratio [HR] = 4.0, P < .001) or presence of only non-H2O2-producing lactobacilli (HR = 2.2, P = .02). Acquisition of BV was associated with having a new sex partner (HR = 2.5, P = .004) and with douching for hygiene (HR = 2.1, P = .05). Absence of lactobacilli did not increase acquisition of VVC. Trichomoniasis was associated only with having a new sex partner (HR = 4.7, P = .05). These results support the hypothesis that H2O2-producing vaginal lactobacilli protect against acquisition of BV but do not protect against VVC or vaginal trichomoniasis.

Adolescent↗

Impact of a gonorrhea control program, including selective mass treatment, in female sex workers.

A gonorrhea control program initiated in 1967 in registered female sex workers (FSWs) in the Philippines involved weekly endocervical cultures for Neisseria gonorrhoeae, with treatment of FSWs found infected or named as contacts by US Navy servicemen. Gonorrhea prevalence in FSWs in Olongapo city fell from 11.9% to 4.0% within 4 months, and gonorrhea incidence in servicemen at nearby Subic Bay fell by half. Selective mass treatment (SMT) with oral ampicillin-probenecid or tetracycline was then given to registered FSWs in an attempt to further reduce gonorrhea rates. N. gonorrhoeae was isolated from 105 (4.0%) of 2640 FSWs before SMT and from 43 (1.6%) 1 week later (P < .001). However, gonorrhea incidence among servicemen fell no lower, and gonorrhea prevalence in FSWs quickly returned to higher levels. Thus, after implementation of weekly screening and treatment of FSWs found infected or named as contacts, SMT of FSWs (without increasing condom use or treating regular partners) contributed nothing further to gonorrhea control.

Female↗

Sexual behaviors and risk factors for HIV infection among men who have sex with men in the Dominican Republic.

OBJECTIVE: To describe self-reported types of sexual identity of men who have sex with men (MSM) in the Dominican Republic, assess sociodemographics and behavioral characteristics, and measure the prevalence of HIV-1 and syphilis. DESIGN: Cross-sectional study of MSM recruited from a variety of community settings. METHODS: A total of 354 men agreed to participate after giving verbal informed consent. Information was obtained using a standardized questionnaire assessing demographics and AIDS-relevant information. Blood was obtained for HIV and syphilis testing. RESULTS: Five main sexual identity groups emerged: cross dressers, homosexuals, gigolos, bisexuals and heterosexuals. Receptive anal and oral intercourse were commonly reported by men self-identifying as cross dressers or homosexuals, whereas nearly all of the remaining three groups practiced only insertive intercourse. Sexual contact with women was also commonly reported; overall, consistent condom use was infrequent. HIV antibodies were detected in 11.0% and serologic evidence of syphilis was found in 7.3%. Factors independently associated with HIV infection included serologic evidence of syphilis, having visited at least one of four local brothels in 1975-1985, and having had receptive anal intercourse with four or more partners in the last 12 months. CONCLUSIONS: Syphilis, sexual practices and social context of sex (commercial sex), rather than sexual identity per se, were associated with HIV infection. The complex social networks of MSM in this setting, the tendency to practice either insertive or receptive sex, but not both, infrequent condom use, high rates of syphilis and the frequency of sex with women need to be taken into account for targeted HIV prevention programs to be successful.

Adolescent↗

HIV-1, HIV-2, human papillomavirus infection and cervical neoplasia in high-risk African women.

OBJECTIVE: To determine the effect of HIV-1 and HIV-2 infection on the prevalence of cervical human papillomavirus (HPV) and squamous intraepithelial lesions (SIL) in a population of high-risk women in Senegal. DESIGN AND PARTICIPANTS: Cross-sectional study among 759 female commercial sex workers, including 68 with HIV-1, 58 with HIV-2, 14 with HIV-1 and 2, and 619 without HIV infection. RESULTS: Overall, HPV was detected in 43% of women by polymerase chain reaction (PCR), and in 7% by Southern transfer hybridization, with 7.4% of all women having SIL. The mean CD4 count was 820, 1205, and 727 x 10(6)/l for those with HIV-1, HIV-2, and dual HIV-1 and 2 infections, respectively, and 1447 x 10(6)/l for those without HIV infection. Both HIV-1 and HIV-2 were associated with HPV, as detected by PCR [HIV-1 odds ratio (OR), 2.9; 95% confidence interval (Cl), 1.7-4.9; HIV-2 OR, 1.7; 95% Cl, 1.0-2.9]. HIV-2 was also associated with cervical SIL, and although the association between HIV-1 and SIL did not attain statistical significance, a trend was apparent (HIV-1 OR, 1.8; 95% Cl, 0.7-4.7; HIV-2 OR, 2.9; 95% Cl, 1.2-7.2). CONCLUSIONS: Despite less immunosuppression with HIV-2, both HIV-1 and HIV-2 were associated with detection of HPV. HIV-2 was also associated with SIL. Further studies are needed to examine the risks of high-grade SIL and invasive cervical cancer with HIV-1 versus HIV-2 infection.

Adult↗

Gender differences in sexual practices and sexually transmitted infections among adults in Lima, Peru.

OBJECTIVES: This study examined the prevalences of antibodies to Treponema pallidum, Chlamydia trachomatis, and herpes simplex virus type 2 in a sample of Peruvian adults. METHODS: Among adults seeking health certification in Lima, Peru, 600 were randomly selected to undergo interviews and serologic testing. RESULTS: Men's reported mean lifetime number of partners (10.6) far exceeded women's (1.1), yet antibody to sexually transmitted infection pathogens among sexually experienced participants was 2.8 times more prevalent among women than among men. Among men, female sex workers accounted for 37% of recent partners, and only sex with female sex workers while using condoms less than half of the time was independently associated with antibody (odds ratio = 3.6, 95% confidence interval = 1.5, 8.8). among women, number of partners was associated with any sexually transmitted infection antibody, while intercourse before 18 years of age was associated with C trachomatis antibody. At every level of perceived risk, sexually transmitted infection antibody was more frequent among women. CONCLUSIONS: Men having unprotected sex with female sex workers had the greatest risk of acquiring infections and (by inference) of transmitting them to women.

Adult↗