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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 231 (1982), S. 141-147 
    ISSN: 1432-0711
    Keywords: Pregnancy proteins ; Pregnancy specific β1-glycoprotein (SP1) ; Heterogeneity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Late pregnancy serum and plasma were examined in rocket immunoelectrophoresis (RIE) and crossed immunoelectrophoresis (XIE) before and after “acid treatment” (pH 2.5, 10 min). The analysis revealed changes in the precipitation morphology in the majority of circulating proteins extending from the albumin to the γ-region. In RIE, the precipitation pattern of SP1 was altered, this change being independent of polyethylene glycol. In addition, XIE analysis of SP1 revealed a change in the precipitation morphology with no change in electrophoretic mobility. The results can be explained by non-specific aggregation and denaturation due to “acid treatment”, and are therefore unlikely to be of any biological or immunochemical importance.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-7330
    Keywords: In vitro fertilization ; low responders ; pre-in vitro fertilization treatment using oral contraceptive pill or gestogen ; controlled ovarian hyperstimulation ; “flare” protocol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose: Women undergoing in vitro fertilization with lowovarian reserve and poor response to controlled ovarianhyperstimulation (COH) present a management dilemma.In a retrospective observational study, we compared thepretreatment use of the gestogen medroxyprogesterone acetate(10 mg twice daily from day 15 of the cycle for aminimum of 2 weeks) with an oral contraceptive pill (onetablet daily from day 4 of the cycle for a minimum of 3 weeks). Methods: The criteria for inclusion in the study includedone or more of the following: abandoned cycles due topoor response, fewer than four oocytes retrieved followinga standard COH protocol, age 〉39 years, and elevatedbasal serum follicle-stimulating hormone (FSH).Thirty-eight women received pretreatment with gestogen, and asimilar number of women received pretreatment with thepill. The flare protocol was used in all treatment cyclescombined with an individualized dose of human menopausalgonadotropin (hMG) (4–8 ampoules/day of 75 units FSH/ampoule) depending on previous response, age, and earlyfollicular serum FSH level. Both groups were similar inmean age, duration of infertility, early follicular FSH levels,and the distribution of various aetiologies. Results: Twenty-nine cycles were abandoned before oocyteretrieval, 15 (39.5%) in the pill group and 14 (36.8%) inthe gestogen group, because of an inadequate ovarianresponse. The mean (±SD) number of ampoules (75 IUFSH/ampoule) of hMG used per cycle was similar in thepill and gestogen groups (59.7 ± 19.3 vs. 70.2 ± 29.4,respectively). There also was no difference seen in the numbersof oocytes retrieved (4.4 ± 2.3 vs. 4.2 ± 2.5), totalnumber of embryos (2.5 ± 2.4 vs. 2.2 ± 1.1), or the numberof embryos transferred (1.8 ± 1.2 vs. 2.1 ± 1.0) in the pilland gestogen groups, respectively. One pregnancy in eachgroup resulted following embryo transfer in 22 women inthe pill group and in 24 women in the gestogen group. Conclusions: We conclude that pre-IVF treatment with oralcontraceptive pill or gestogen combined with the flare protocolin women at high risk of or with a history of poor ovarianresponse, as defined in this study, did not appear to resultin an improvement in outcome of IVF-embryo transfer.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of assisted reproduction and genetics 13 (1996), S. 279-281 
    ISSN: 1573-7330
    Keywords: consanguinity ; infertility ; assisted reproduction ; outcome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose: The outcome of pregnancies resulting from assisted reproduction technology does not seem to differ from the outcome of those arising from spontaneous natural conception. Methods: There is increased risk of chromosomal abnormality in spontaneous natural pregnancies resulting from consanguineous marriage, with consequent higher rates of miscarriage, stillbirth, and congenital abnormalities. Results: This study has shown a trend of an increased miscarriage rate (but not statistically significant) in pregnancies achieved in infertile couples of consanguineous marriages by assisted reproductive technology. Conclusions: Selecting embryos for transfer on the basis of their morphology does not appear to reduce the risk of chromosomal abnormality in these couples.
    Type of Medium: Electronic Resource
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