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Biomedical subjects

A Pelzer

Publications and source records attributed to A Pelzer.

27 records · Page 2Linked to original sources

Seroepidemiological studies of Haemophilus ducreyi infection in Ethiopian women.

BACKGROUND AND OBJECTIVES: To measure prevalence of anti-Haemophilus ducreyi antibodies in sera from Ethiopian female attendees, and to determine significant socioeconomic associations. STUDY DESIGN: A modified ELISA immunoassay was used to test sera of 1,831 Ethiopian women attending gynecological, obstetric, and family planning clinics in Addis Ababa. RESULTS: Overall seropositivity was 19.4%. Prevalence rates for seropositivity for antibodies to H. ducreyi were significantly associated with ethnic group and religion, older age (> or = 50 years: 28%), early age at first coitus (< 13 years: 28%) and first coitus before the menarche (25%), being divorced (27%) or a prostitute (24%), longer duration of marriage (> 20 years: 27%) and sexual life (> 20 years: 24%), number of lifetime sexual partners (2 to 5 partners: 27%) and self-reported history of both syphilis and gonorrhea (31%). Of these factors, the two most significant were first coitus before the menarche (P < 0.0001) and not being still married to the first husband/sexual partner (P < 0.001). Differences in seropositivity according to ethnic group and religion may be explained by the number of women within each group who had only one lifetime sexual partner. Women with serological evidence of exposure to another sexually transmitted disease (STD) had a greater risk of exposure to H. ducreyi. The odds ratio for H. ducreyi seropositivity in women with syphilis or gonorrhea was 3.6, for women with genital chlamydial infection, 2.3, and for those with HBV or HSV-2, 1.4 and 1.3 respectively. CONCLUSIONS: This study illustrates the usefulness of the modified ELISA immunoassay for measuring exposure to H. ducreyi, and the usefulness of H. ducreyi as a marker for cumulative sexual exposure. Further studies on the association of HIV transmission and H. ducreyi in Ethiopia are now indicated.

Adolescent↗

Interferon-gamma in combination with carboplatin and paclitaxel as a safe and effective first-line treatment option for advanced ovarian cancer: results of a phase I/II study.

We have previously shown that interferon-gamma 1b (IFN-gamma) in combination with cyclophosphamide and cisplatin significantly prolongs progression-free survival in ovarian cancer. In this phase I/II study, we examined if administration of IFN-gamma is also safe in combination with the current standard treatment, paclitaxel and carboplatin. Thirty-four patients with newly diagnosed advanced epithelial ovarian cancer, FIGO stage III/IV, were treated for six to nine cycles with paclitaxel (175 mg/m(2)) and carboplatin (area under the curve [AUC] 5) every 3 weeks. IFN-gamma was administered in an escalating dose from 6 days/cycle with 0.025 mg sc up to 9 days/cycle with 0.1 mg sc. As expected, administration of IFN-gamma was associated with flu-like symptoms. Grade 3/4 neutropenia was observed in 74% (25 out of 34) of patients. Other side effects, in particular peripheral neuropathies, were within the previously observed ranges for the paclitaxel plus carboplatin combination. Overall response rate (complete or partial response) in patients who received either six or nine doses (0.1 mg) of IFN-gamma/cycle (n = 28) was 71%. IFN-gamma is safe in combination with carboplatin and paclitaxel for first-line treatment of patients with advanced ovarian cancer. This combination should be further evaluated as an immunotherapeutic treatment option for ovarian cancer.

Adenocarcinoma, Mucinous↗

Is cervical cancer in Ethiopian women the result of a sexually transmitted disease?

Cervical cancer is the most prevalent cancer of women in Ethiopia and sexually transmitted diseases are highly prevalent in the country. In order to establish a possible cause and effect relationship between sexually transmitted diseases and cervical cancer, likely etiological socio-economic factors for these two conditions have been analysed. While residence, income, age at first coitus, age, number of sexual partners, marital status/profession and duration of sexual life affect both conditions, there is a significant difference between the most important factors in the etiology of the separate conditions. Serological testing shows a high prevalence of gonorrhea, which was used as a marker of STD. Women with gonococcal antibodies had evidence of increased exposure to other STD; there was no such correlation for cervical cancer. Our results indicate that STD per se is unlikely to be a primary cause of CC in Ethiopia. It appears probable that the etiology of CC in Ethiopia is multifactorial. Early exposure of the immature cervical epithelium to STD, the trauma of repeated childbirth, and multiple sexual partners in women whose defence factors are impaired by chronic malnutrition, add up to a major medico-socio-economic factor. The evidence presented here suggests that CC in Ethiopia is not so much the result of a sexually transmitted disease, but a sociosexual disease.

Adolescent↗