ABSTRACT
AIM: This study aims at evaluating the chromosomal abnormalities and deoxyribonucleic acid (DNA) damage in cases with primary amenorrhea by karyotyping and comet assay. STUDY DESIGN: A total of 30 cases of primary amenorrhea were recruited. Secondary sexual characters were assessed by Tanner staging. Chromosomal analysis was performed by conventional phytohemagglutinin stimulated lymphocyte cell culture technique. Alkaline version of comet assay was used to evaluate DNA damage. RESULTS: The chromosomal pattern of 20 subjects (66.7%) was found to be normal (46,XX). Two subjects had 46,XY pattern and eight subjects had Turner syndrome (45,X or 45,X/46,XX). The comet parameters were found to be increased among subjects with 45,X monosomy, when compared to the rest of the study group and also in subjects with Tanner stage 1 when compared to stage 2. CONCLUSION: Comet assay revealed increased DNA damage in cases with 45,X monosomy, compared with subjects with 46,XX and 46,XY karyotype, which correlated with clinical features.
Subject(s)
Adolescent , Adult , Amenorrhea/classification , Amenorrhea/genetics , Chromosomes, Human, X/genetics , Chromosomes, Human, Y/genetics , DNA Damage/analysis , DNA Damage/genetics , Female , Humans , Karyotyping/methods , Sex Characteristics/genetics , Young AdultABSTRACT
Primary amenorrhea is one of the common reproductive disorder affecting females. It leads to the absence of menarche in the reproductive age group in females and/or complete absence of reproductive organs. There are many causes which lead to PA, including genetic aberrations which are the leading factors.
Subject(s)
Amenorrhea/classification , Amenorrhea/diagnosis , Amenorrhea/epidemiology , Amenorrhea/genetics , Female , Genotype , Humans , India/epidemiology , India/etiology , Karyotype , Young AdultABSTRACT
El desarrollo de amenorrea hipotalámica refleja generalmente una respuesta individual al stress ambiental y al propio estilo de vida. En la mayoría de los casos, no hay una anormalidad anatómica detestable del eje hipotálamo-hipófisis-ovario-endometrio. Numerosas evidencias sugieren que el defecto de base es una reducción de la actividad del generador hipotalámico de pulsos de GNRH. Los factores neuroendocrinos que regulan la función de este centro son parcialmente conocidos. El sistema opioidérgico y dopaminérgico han sido implicados como posibles factores en la reducción de la secreción pulsátil de GNRH. Debido a la naturaleza por lo general funcional del trastorno, se espera una reactivación de la actividad pulsátil de GNRH una vez superado los factores que lo desencadenaron. La persistencia de la anovulación obliga a una terapia de reemplazo hormonal fundamentalmente por el riesgo de terapia de reemplazo hormonal fundamentalmente por el riesgo de osteoporosis. En las pacientes que desean fertilidad, la inducción de ovulación con GNRH pulsátil es la alternativa terapéutica más efectiva