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PubMed1984

Barrier contraception.

Barrier contraception is a safe, effective, reversible form of contraception acceptable to many couples. The use of barrier contraception may protect against carcinoma of the cervix and sexually transmitted diseases. Distribution and education in the use of barrier contraception does not always require medical supervision. This must make it an attractive form of contraception for agencies supporting family planning programmes in developing countries. The only marketed recent advance in barrier contraception is the collatex sponge. Effectiveness rates range between 9 and 27 pregnancies per 100 woman-years. This is unlikely to make it the first choice of contraception for couples who would find an unintended pregnancy a severe problem, but the sponge will be acceptable to couples who are simply trying to delay a pregnancy. The new surge of interest in barrier contraception could lead to safer more effective forms of contraception being made available to women without medical supervision. This would have many advantages, but could also detract from the ability of family planning clinics to play an important role in preventative medicine for women.

Adrenergic beta-Antagonists↗
PubMed1996

Contraception in the 1990s.

Contraceptive technology has recently provided the market place with new barrier methods, new progestin oral contraceptives, an injectable contraceptive, the female condom, new male condoms, and the contraceptive implant. During the last decade, epidemiologists have clearly defined the non-contraceptive benefits of current contraceptive methods that include decreased infections, protection from various cancers, protection from many gynecologic problems that lead to surgery, as well as symptomatic relief from many gynecologic conditions. In conjunction with medical specialists, contraceptive researchers have established the increased safety and benefits of various contraceptive choices in women with medical conditions that, until recently, were contra-indications for their use. That these advances have occurred despite multiple legal and scientific assaults gives hope that the field will continue to grow.

Contraception↗
PubMedDate not supplied

Cervical acid phosphatase: a biomarker of cervical dysplasia and a potential surrogate endpoint for colposcopy.

BACKGROUND: In 2000, cervical acid phosphatase (CAP) has been recently described as a biomarker labeling abnormal squamous cells on Pap smears (USPTO #6,143,512). The enzyme activity is presented as a red, granular deposit on a modified Papanicolaou background. This unique property was utilized for development of MarkPap technology intended for cervical cancer screening. MATERIAL/PATIENTS & METHODS: We conduct a multicenter, random assignment, assessor blinded, 2-group (test and control), split-sample designed clinical trial on 1,500 subject/specimens to assess safety and efficacy of the new test, in comparison with the control, for cervical cancer screening in standard Pap test environment. Safety is measured with frequency, severity and relation of adverse events. Efficacy is measured with primary endpoints (portion of positive/abnormal specimens detected, and the false negative rate). At the end of the follow-up period (two years) when the study will be completed, other efficacy endpoints such as accuracy (sensitivity/specificity) and predictive values will be added to the method evaluation. Here we present in interim analysis. RESULTS: In April 2003, the recruitment was completed and the first twelve hundred cases have been evaluated. There was no serious or related adverse event in both groups. Minor, unrelated adverse events were rare and insignificantly distributed in both groups. PRIMARY ENDPOINTS: A: Portion of positive/abnormal specimens detected: Pe (new test) = 0.166, Ps (Pap control): 0.082; Ps' (ACS reported value for US in year 2000): 0.07. Pe >/= Ps + delta, for delta = 0.5Ps. B. False negative rate: Pe = 0.05, Ps' = 0.10. Confidence intervals: 95% CI: Test [0.148-0.193], Pap control [0.068-0.098]. OR = 2.26. chi2 = 40.69101 is greater than the critical value of 3.841 (P < 0.01). CONCLUSION: We concluded that CAP had added to visibility of Pap test and has enabled cytoscreeners to significantly improve the detection of positive/abnormal specimens and reduce false negative rate. We discuss this unique property of CAP with emphasis on using it as a surrogate endpoint for colposcopy and eventual removal of a cervical lesion that, if untreated, could progress into cancer.

Acid Phosphatase↗