Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:2.7.10.2 (focal adhesion kinase)
 44,029 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Chancroid, the most prevalent form of genital ulcer disease in developing countries, increases the risk of HIV transmission. Use of monoclonal antibodies against leukocyte differentiation antigens enabled analysis of the composition of the inflammatory infiltrate of genital ulcers. In this study, biopsies of six genital ulcers caused by Haemophilus ducreyi were examined immunohistochemically. In each case, staining revealed a superficial necrotic layer of polymorphonuclear leukocytes with fibrin and erythrocytes at the base of the ulcer, a middle layer of the edematous inflammatory dermis with prominent blood vessels and vascular thrombi, and a deep layer of an inflammatory infiltrate of plasma cells and lymphocytes. The lymphocytic infiltrate of chancroid ulcers consisted of both B- and T-lymphocytes and showed a cluster-like formation. B-lymphocytes were preferentially localized perivascularly in the middle layer, while T-lymphocytes tended to be located in the deep layer of the inflamed edematous tissue. These findings provide further evidence of the importance of the involvement of T-cells in the local immune clearance of H. ducreyi. Future studies should investigate lymphocyte secretions detected in genital ulcers caused by H. ducreyi to gain more information on the role of the cellular immune mechanisms in the disease.
Int J STD AIDS 1997 Sep
PMID:Immunohistochemical investigations of genital ulcers caused by Haemophilus ducreyi. 929 49

A total of 17,824 sera were screened for the presence of HIV 1 + 2 antibodies by Enzyme Immuno Assay (EIA) to determine (i) seroprevalence of HIV infection in hospital high risk groups (ii) time trend of HIV seroprevalence in STD clinic attendees (both STD patients and non STD patients), over a period of six years, (iii) relationship of the STD's with HIV seropositivity (iv) clinical profile and epidemiological characteristics of the AIDS cases. A progressive increase in the HIV seropositive STD patients showing a five fold rise over six years was seen. Most gave history of multipartner sex especially with female CSW's. The most common STD associated with HIV seropositivity was Syphilis followed by Chancroid and Gonorrhoea. All had HIV-1 infection. The AIDS cases (20) presented mainly with tuberculosis, both pulmonary and extrapulmonary. The mode of infection, both in the HIV seropositive and AIDS cases, was mainly heterosexual relationship followed by blood transfusion. In a few cases, infection was perinatally transmitted. In the limited number of HIV positive contacts studied, seven were confirmed as Western Blot positive. HIV infection, although a later introduction in Delhi compared to the coastal cities, has shown a clear increasing trend in the STD patients.
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PMID:Sero surveillance of HIV infection in high risk groups and in suspected AIDS cases in a New Delhi hospital. 946 34

Chancroid is caused by infection with Hemophilus ducreyi, and is associated with an increased risk for the sexual transmission of HIV-1. The authors assessed whether the clinical and histological features of chancroid are changed by HIV infection, using 320 male patients who presented during February-November 1994 to the City of Nairobi Special Treatment Clinic with a clinical diagnosis of chancroid. 109 subjects were HIV seropositive and 211 were HIV seronegative. A detailed history, physical examination, swabs for Hemophilus ducreyi culture and blood for HIV serology, syphilis serology, and CD4 counts were obtained from all patients. Punch biopsies from an ulcer were obtained from 10 patients and either fixed in 10% formalin or snap frozen in Optimum Cutting Temperature (OCT) medium compound at -70 degrees Celsius. Patients were treated with erythromycin and followed for 3 weeks. HIV patients had ulcers of longer duration than did HIV-seronegative patients. Although cure rates were similar at 3 weeks, HIV patients had lower cure rates at 1 week (23% vs. 54%). A dense interstitial and perivascular inflammatory infiltrate extending from the reticular to deep dermis was present in all biopsies. The infiltrate consisted of equal amounts of CD4 and CD8 T-lymphocytes as well as macrophages. The histological and immunohistochemical picture was identical for HIV-positive and HIV-negative patients. Study findings therefore indicate that HIV infection slows the healing rates of chancroid ulcers despite appropriate antibiotic therapy. The clinical difference cannot be attributed to an altered histopathological response to HIV infection.
Int J STD AIDS 1998 Sep
PMID:Clinical and in situ cellular responses to Haemophilus ducreyi in the presence or absence of HIV infection. 976 37

A study conducted at the Centre Medico-Social de Bilyogo, a primary health clinic located in an area of Nyamirambo, Kigali (Rwanda), where prostitution is widespread, assessed the frequencies of the causes of genital ulcer disease. Out of 1057 consecutive genital ulcer patients tested in 1986-88, 57% of men and 80% of women were infected with HIV-1. The most frequent laboratory diagnoses were chancroid (27%), syphilis (19%), and genital herpes (19%) among men and syphilis (35%), genital herpes (23%), and chancroid (20%) among women. During follow-up in 1990-92, HIV-1 seroprevalence increased sharply among men of all ages and women under 30 years of age. HIV-1 seropositivity had no effect on the clinical presentation of ulcers or on the time required for ulcer healing. Advanced immunodeficiency, diagnosed among 12% of HIV-positive patients, was significantly associated with increasing age and genital herpes.
Int J STD AIDS 1998 Nov
PMID:Genital ulcers in a primary health clinic in Rwanda: impact of HIV infection on diagnosis and ulcer healing (1986-1992). 986 86

This cross-sectional study was carried out among male outpatients with symptoms of STDs at the STD reference centre at the Institute of Social Hygiene (IHS), Dakar, Senegal, from March 1989 through May 1991. This study was used to determine the prevalence of STDs and HIV among male patients attending an STD clinic and to identify their socio-demographic characteristics and risk factors. A total of 975 patients were enrolled in the study. The most common syndromes were urethritis (76%) and genital ulcers (22%). Considering single infections, the major STD agents were Neisseria gonorrheae (N.gonorrheae, 30%), Chlamydia trachomatis (C.trachomatis, 15%), Treponema pallidum (T.pallidum, 12%), and Haemophilus ducreyi (H.ducreyi, 7%). HIV prevalence was 2.6 percent (25/975). After multivariate analysis, the risk factors associated with HIV infection were a history of sex with prostitutes (odds ratio [OR] = 8.6, 95% confidence interval [CI] = 2.0-37.8), unprotected sexual contact (OR = 5.6, 95% CI = 1.2-25.0), a history of urethritis (OR = 3.4, 95% CI = 1.3-8.9), current STDs due to H.ducreyi or T.pallidum (OR = 6.1, 95% CI = 2-18.8), and mixed STD infection (OR = 5.3, 95% CI = 1.3-21.8). HIV prevalence was quite low in this population compared to similar studies of STD patients from other sub-Saharan African countries. Neisseria gonorrheae and Chlamydia trachomatis were the leading causes of STDs. A history of risky sexual behaviour, previous STDs, current genital ulcers, and mixed STD infections were associated with HIV infection. Further studies are necessary to determine changes in the relationship of STDs and HIV infection in this population.
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PMID:Sexually transmitted diseases and risk of HIV infection in men attending a sexually transmitted diseases clinic in Dakar, Senegal. 1021 12

Adolescents remain a group at particular risk for STD acquisition due to a combination of biological and psychosocial factors. Access to care can be an obstacle to seeking appropriate screening and treatment for many adolescents; undetected infection may lead to unwanted sequelae, including pelvic inflammatory disease, chronic abdominal pain, tubal scarring, and increased risk of ectopic pregnancy. With respect to gonorrhea, chlamydia, syphilis, and chancroid, the hope is that improved detection will decrease sequelae by prompting earlier recognition and treatment. In all cases of suspected sexual abuse cultures remain of utmost importance because of the negative consequences associated with a possible false-positive test result. Urine screening in certain settings, such as school-based health centers and juvenile detention centers, remains positive; however, adolescents with a positive test may still require further evaluation to identify HPV and abnormal Pap smear findings, syphilis, and other STDs currently not recognizable with a simple urine screen.
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PMID:Sexually transmitted diseases: testing and treating. 1037 Jul 7

A pCb plasmid encoding a beta-lactamase from Haemophilus ducreyi was transferred to Escherichia coli, purified, and characterized. The beta-lactamase could be isolated from a culture filtrate and further purified by ammonium sulfate and chelating Sepharose fast flow loaded with Zn(2+). The purified enzyme resulted in a major band at approximately 30-kDa on SDS-PAGE and its pI was determined to be 5.4. The beta-lactamase could hydrolyze both penicillin antibiotics including ampicillin, benzylpenicillin, and carbenicillin as well as cephalosporin antibiotics including nitrocefin, cephalothin, cephaloridine, and cefoperazone. However, benzylpenicillin was the best substrate. The enzyme activity was inhibited by clavulanic acid but not by boric acid, cefotaxime, ethylenediaminetetraacetic acid, or phenylmethylsulfonyl fluoride. The sequence of the beta-lactamase gene was also determined. It confirmed that the enzyme belonged to a class A beta-lactamase which had 99% identity to the ampicillin resistance transposon Tn3 of pBR322. Two nucleotides were different between the E. coli (Tn3) and H. ducreyi (pCb) genes that affected the amino-acid sequence. The valine at position 82 (ABL 84) was changed to isoleucine and the alanine at position 182 (ABL 184) was changed to valine. Genetic homogeneity among beta-lactamases is remarkable. Amino acid sequencing of some beta-lactamases has shown that substitution of only a few amino acids in the bla gene leads to high-level resistance against specific cephalosporins.
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PMID:Purification and characterization of a beta-lactamase from Haemophilus ducreyi in Escherichia coli. 1157 Aug 57

The legal framework governing the practice of genitourinary medicine is traced from 1916 to the present. The first legislation, the Public Health (Venereal Diseases) Regulations of 1916 was comprehensive, and accompanied by guidance on setting up outpatient clinics and their supporting laboratories with practical advice on taking samples to support clinical diagnosis. Confidentiality was emphasized. The regulations led to the development of a nationwide network of clinics providing free care, open at times convenient to the public, and situated in general hospitals in large centres of population. Most of the principles still apply. Subsequent legislation centred on maintaining the confidentiality of all information obtained in relation to persons examined or treated for venereal disease, but allows transfer of details between healthcare providers to facilitate care and contact tracing. While the initial regulations stated that the venereal diseases were syphilis, gonorrhoea and chancroid, the legislation now covers all sexually transmitted diseases.
Int J STD AIDS 2001 Nov
PMID:The legal framework covering the practice of genitourinary medicine in the UK: the Venereal Diseases Regulations. 1158 7

Detection of Haemophilus ducreyi in genital ulcer specimens by culture lacks sensitivity. To enhance detection, a heminested polymerase chain reaction (PCR) assay was developed targeting the nucleotide sequence of a gene, designated p27, which encodes for a 27 kDa H. ducreyi-specific protein. The p27 PCR assay detected all (37/37) H. ducreyi strains tested and gave no amplified product from DNA extracts of any of 31 other microorganisms, from 30 non-genital ulcer specimens, or from 29 urethral and vaginal swab specimens collected from non-chancroid STD patients. In genital ulcer disease specimens, compared to combined positive results obtained by culture and a previously described PCR assay, the p27 PCR assay showed a sensitivity of 91% (48/53). The p27 PCR assay provides a specific and a sensitive detection of H. ducreyi in clinical specimens.
Int J STD AIDS 2001 Dec
PMID:Development of a heminested polymerase chain reaction assay for the detection of Haemophilus ducreyi in clinical specimens. 1177 70

p-Methoxybenzylisothiocyanate was isolated from Lepidium bonariense and found to be responsible for the plants antimicrobial and STD activity. MIC determinations were conducted for p-methoxybenzylisothiocyanate on Haemophilus ducreyi, Neisseria gonorrheae, Candida albicans, Bacillus subtilus, Micrococcus luteus, Staphylococcus aureus, Enterobacter sp., Escherichia coli, Klebsiella pneumoniae, and Psuedomanas aeruginosa. An in vitro cellular toxicity assay showed that at 100 microM (17,9 microg/mL) p-methoxybenzylisothiocyanate is not toxic to living cells.
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PMID:The activity of p-methoxybenzylisothiocyanate against Neisseria gonorrhoeae, Haemophilus ducreyi, and other microorganisms. 1216 Nov 51


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