Zoreslava A Shkyryak-Nyzhnyk

Institute of Pediatrics Ob&Gyn NAMS of Ukraine, Kievo, Kyiv City, Ukraine

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Publications (7)19.73 Total impact

  • No preview · Conference Paper · Jan 2005
  • R E Little · Beth C Gladen · Karen Birmingham · Zoreslava A Shkyryak-Nyzhnyk · Nataliya Chyslovska
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    ABSTRACT: We compared rates of total and spontaneous preterm birth in Avon County, England and urban Ukraine to explore whether adverse conditions in the former eastern bloc influenced the preterm rate. Women who had last menstrual period (LMP) in a specified time window were recruited from geographically defined areas. Data were gathered between 1992 and 1995, using maternal questionnaires and medical record abstraction, with comparable methods in both sites insofar as possible. There were 13731 births in Avon and 3087 in Ukraine. Rates of total and spontaneous preterm births were compared, taking account of maternal characteristics and other relevant variables. The total preterm birth rates were similar (5.9%, Ukraine; 5.5%, Avon) but the spontaneous preterm rate was about 60% higher in Ukraine (5.0% versus 3.1%). Maternal characteristics and measurement differences did not explain the discrepancy. The difference in the spontaneous preterm rates may reflect differences in obstetrical management resulting from shortages of medical supplies and equipment in Ukraine.
    No preview · Article · May 2004 · European Journal of Obstetrics & Gynecology and Reproductive Biology
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    ABSTRACT: Placental weight and its ratio to birthweight have recently been reported to predict later chronic disease. These fetal growth indicators have been measured in the west for over a century with consistent results when methods of preparation were comparable. We investigated whether recent difficult conditions in the former eastern bloc have altered placental weight or its relationship to other fetal size measures from what has historically been reported. Placentas were obtained from 1621 singleton births of at least 28 weeks gestation in a Ukrainian city during 1993-1994, using a systematic protocol. Maternal characteristics were obtained from questionnaires. Pregnancy complications and birth size measures (infant weight, length, crown-rump length, and head circumference) were abstracted from medical records. We examined relationships of placental weight and ratio to these variables. Placental weight ranged from 100 to 1000 g, with a mean of 470 g. Mean placental ratio was 13.9%. Placental weights increased and ratios decreased with gestational age. Larger ratios were related to larger maternal BMI. Absolute measures of infant size and placental weight were mutually positively correlated. Placental ratio, infant length, and ponderal index (PI) were nearly uncorrelated. Absolute and relative weights of Ukrainian placentas were similar to historical reports, as were their relationships to other infant size indicators. Placental weight ratio (PWR), ponderal index, and infant length measured different birth size dimensions. Placental availability, consistency of placental measurements, and placental ratio's reflection of an independent facet of fetal growth make the placenta a useful research tool.
    No preview · Article · May 2003 · Early Human Development
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    R E Little · S C Monaghan · B C Gladen · Z A Shkyryak-Nyzhnyk · AJ Wilcox
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    ABSTRACT: Frequent terminations of pregnancy and high rates of fetal loss have been reported, but not confirmed, in the former eastern bloc. A census of pregnancies in Ukraine, a former eastern bloc country, was conducted to determine the rates of these events. All pregnancies registered in 2 urban areas were enumerated. During a 19-month period between 1992 and 1994, 17,137 pregnancies and their outcomes were recorded. Sixty percent of the pregnancies were voluntarily terminated, generally before the 13th week. In pregnancies delivered at 20+ weeks, fetal mortality was 29 per 1000, nearly 5 times the rate among Whites in the United States. There was a greater proportion of very early deliveries (20-27 weeks) in Ukraine, as well as higher death rates at all gestational ages. Perinatal mortality was estimated to be 35 per 1000, about 3 times the US rate. This is believed to be the first study in the former eastern bloc to ascertain all of the clinically recognized pregnancies in a specified period and to determine their outcomes. The data document elevated reproductive risks in a former Soviet state.
    Preview · Article · Jan 2000 · American Journal of Public Health
  • B C Gladen · AJ Schecter · O Päpke · Z A Shkyryak-Nyzhnyk · D O Hryhorczuk · R E Little
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    ABSTRACT: Substantial environmental pollution has been alleged in Ukraine, but little information is available to allow an assessment of the possible impact on humans. To help remedy this lack of information, it was of interest to investigate whether certain polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), or coplanar polychlorinated biphenyls (PCBs) were elevated in people from Ukraine. Samples of breast milk were obtained from 200 women from the cities of Kyiv and Dniprodzerzhinsk; Kyiv is the capital and Dniprodzerzhinsk is a highly industrialized city. The samples were combined into four pools by city and age, and analyzed for 7 PCDDs, 10 PCDFs, and 2 coplanar PCBs (126 and 169). The total of the measured PCDDs, expressed as toxic equivalent, ranged from 5.1 to 7.6 pg/g lipid; for PCDFs from 3.6 to 5.2, and for PCBs from 11 to 18 pg/g lipid. Results from the two cities were similar; older women had slightly higher concentrations than did younger women. Levels of these compounds seen in Ukraine were similar to or lower than those seen in other recent studies from European and Asian countries.
    No preview · Article · Nov 1999 · Journal of Toxicology and Environmental Health Part A
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    ABSTRACT: Family and Children of Ukraine, the Ukrainian component of the European Longitudinal Study of Pregnancy and Childhood, is a prospective, geographically-based study to evaluate pregnancy outcomes in 8,000 women in five cities in Ukraine and follow the cohort of births through 7 years of age. Family and Children in Ukraine has been the major collaborative research project for the University of Illinois' Fogarty-funded program, International Training and Research in Environmental and Occupational Health. This Fogarty program includes graduate training, U.S.-based training of visiting scientists, in-country training, and collaborative in-country research. Factors that have contributed to the success of the collaboration include: 1) its focus on the environmental health of mothers and children, which is a priority goal for both countries; 2) the adoption of an internationally-endorsed research protocol with strict quality-control criteria, specifically designed for international collaboration; 3) the establishment of an in-country data management center; and 4) the investment in a long-term research program rather than a short-term study. The major obstacles have been the difficult economic situation in Ukraine, which limits in-country research investment, and the difficulty in obtaining U.S. funding for an international research program.
    No preview · Article · Jul 1999 · International journal of occupational and environmental health
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    ABSTRACT: Reports of environmental problems in the former Soviet Union, including excess use of pesticides, have led to concerns about high levels of contamination in humans, but little information is available to assess whether these concerns are warranted. Samples of breast milk from 197 women from two cities in Ukraine were analyzed for p,p'-DDT, p,p'-DDE, endrin, dieldrin, heptachlor epoxide, trans-nonachlor, oxychlordane, hexachlorobenzene, ss-hexachlorocyclohexane (HCH), and 18 polychlorinated biphenyl congeners, and results were compared to previous reports from Europe. The median ss-HCH concentration was 731 ng/g milk fat, which is higher than other reports from Europe but lower than reports from other parts of the world. The median DDE concentration was 2,457 ng/g milk fat, which is higher than most but not all other reports from Europe. Concentrations of other chemicals were comparable to or lower than other reports from Europe. Concentrations from the city of Kyiv were generally lower than those from Dniprodzerzhinsk, but the magnitudes of these differences were modest.
    Full-text · Article · Jul 1999 · Environmental Health Perspectives