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Related Concept Videos

Infertility in Females01:28

Infertility in Females

Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of endometrial...
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Cloning of Dolly the Sheep01:08

Cloning of Dolly the Sheep

The first successfully cloned mammal was Dolly, a sheep, born on 5th July 1996 at Roslin Institute, Scotland. The cloned sheep was named after the American singer Dolly Parton. Dolly lived for seven years and died of respiratory complications, which is speculated to be due to the actual age of her DNA. Because the DNA in cloned cells belongs to an older individual,  the cloned individual’s life expectancy may be affected. Indeed, analysis of Dolly’s DNA revealed shorter telomeres than other...
Nondisjunction01:29

Nondisjunction

During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.
Nondisjunction01:21

Nondisjunction

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers.  Nondisjunction is common during anaphase I or anaphase II of meiosis.  Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold sister...
Nondisjunction01:29

Nondisjunction

During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.

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Updated: Jul 6, 2026

A Common Marmoset Model of Mother-Infant Intervention for Breastfeeding Disorders in the Presence of Paternal Inhibition and Maternal Neglect
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A Common Marmoset Model of Mother-Infant Intervention for Breastfeeding Disorders in the Presence of Paternal Inhibition and Maternal Neglect

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Maternal death and orphans in Cluj County.

Floarea Mocean1, Doina Miere, Lorena Filip

  • 1Department of Public Health, School of Medicine, University of Medicine and Pharmacy "I. Hatieganu", Cluj-Napoca.

Revista Medico-Chirurgicala a Societatii De Medici Si Naturalisti Din Iasi
|April 9, 2008
PubMed
Summary

Romania

Area of Science:

  • Demography
  • Public Health
  • Sociology

Background:

  • Communist Romania's pro-natalist demographic policies encouraged large families.
  • Maternal mortality was a significant issue, particularly before 1989.

Purpose of the Study:

  • To investigate the trends and causes of maternal deaths in Cluj County, Romania, from 1970 to 2004.
  • To analyze the impact of demographic policy changes in 1990 on maternal mortality.

Main Methods:

  • Descriptive, observational, retrospective study of 263 maternal deaths in Cluj County (1970-2004).
  • Data collected from Obstetrics-Gynecology Clinics, analyzed by socio-demographic variables, causes, and consequences.

Main Results:

  • Abortion complications were the primary cause of maternal death before 1990.

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  • Post-1990, obstetrical risk became the leading cause, with a dramatic decrease in abortion-related deaths.
  • Married women aged 20-39, from rural areas with low education, were most affected, leaving 520 children orphaned.
  • Conclusions:

    • Maternal deaths resulted in a significant number of orphans requiring social support and specialized education.
    • Societal engagement is crucial for the upbringing and integration of orphaned children.