Karyotyping Archives - Revista Brasileira de Ginecologia e Obstetrícia
Summary
Rev Bras Ginecol Obstet. 2010;32(8):381-385
DOI 10.1590/S0100-72032010000800004
PURPOSE: to examine the association between cytogenetic characteristics and clinical and epidemiological changes in patients with Turner syndrome (TS). METHODS: Forty-two patients were included. Data were collected using a standardized questionnaire in interviews conducted with the responsible person and, when possible, with the patient. A detailed physical examination was performed. The association between karyotype, stigmata and clinical disorders were examined using the χ2 test. RESULTS: Sixty-four percent of TS patients were 45,X; 26,2% 45,X/46,X;7% 45,X/46Xi(Xq), and 2,3% 45,X/46,X,Del(Xq). Regardless of the karyotype, all patients had short stature. Low hair implantation was more frequent in patients with 45,X (p=0.03). Cardiovascular abnormalities (45%), otitis (43%), thyroid dysfunction (33%) and hypertension (26.6%) were the most frequent clinical disorders, but without correlation with the karyotype. Anthropometric measurements revealed a positive linear correlation of waist and hip circumference with age (r=0.9, p=0.01). Thirty-one patients (74%) were using or had previously used growth hormone (43%), sex steroids (30%), thyroxine (11.9%) or oxandrolone (9.5%). Comparison between gestational age at birth and learning difficulties showed a prevalence ratio of 1.71 (p>0.05). CONCLUSION: Low hair implantation is the most prevalent stigma in patients with a 45,X karyotype and the most common clinical changes were cardiovascular problems, otitis, thyroid dysfunction and hypertension; however, they did not show any correlation with the karyotype.
Summary
Rev Bras Ginecol Obstet. 2010;32(8):381-385
DOI 10.1590/S0100-72032010000800004
PURPOSE: to examine the association between cytogenetic characteristics and clinical and epidemiological changes in patients with Turner syndrome (TS). METHODS: Forty-two patients were included. Data were collected using a standardized questionnaire in interviews conducted with the responsible person and, when possible, with the patient. A detailed physical examination was performed. The association between karyotype, stigmata and clinical disorders were examined using the χ2 test. RESULTS: Sixty-four percent of TS patients were 45,X; 26,2% 45,X/46,X;7% 45,X/46Xi(Xq), and 2,3% 45,X/46,X,Del(Xq). Regardless of the karyotype, all patients had short stature. Low hair implantation was more frequent in patients with 45,X (p=0.03). Cardiovascular abnormalities (45%), otitis (43%), thyroid dysfunction (33%) and hypertension (26.6%) were the most frequent clinical disorders, but without correlation with the karyotype. Anthropometric measurements revealed a positive linear correlation of waist and hip circumference with age (r=0.9, p=0.01). Thirty-one patients (74%) were using or had previously used growth hormone (43%), sex steroids (30%), thyroxine (11.9%) or oxandrolone (9.5%). Comparison between gestational age at birth and learning difficulties showed a prevalence ratio of 1.71 (p>0.05). CONCLUSION: Low hair implantation is the most prevalent stigma in patients with a 45,X karyotype and the most common clinical changes were cardiovascular problems, otitis, thyroid dysfunction and hypertension; however, they did not show any correlation with the karyotype.
Summary
Rev Bras Ginecol Obstet. 2009;31(2):68-74
DOI 10.1590/S0100-72032009000200004
PURPOSE: to asses the prevalence and clinical characteristics of couples with history of recurrent spontaneous abortion and chromosome abnormality, attended at the present service. METHODS: all the couples referred to our service due to history of recurrent spontaneous abortion, from January 1975 to June 2008, were evaluated. Only the ones whose chromosome karyotype analysis by GTG bands has been successfully made were included in the study. Clinical data on their age, as well as on the number of abortions, stillbirth, multiple malformations, livebirth per couple, and the result of the karyotype exam were collected. Fisher's exact test (p<0.05) has been used to compare the incidence of chromosome alterations found in our study, with data in the literature. RESULTS: there were 108 couples in the sample. Their ages varied from 21 to 58 years old among the men (average of 31.4 years old), and from 19 to 43 among the women (average of 29.9 years old). In ten couples, one of the mates (9.3%) presented chromosome alterations, which corresponded respectively to three cases (30%) of reciprocal translocation [two of t(5;6) and one of t(2;13)], two (20%) of Robertsonian translocation [two of der(13;14) and one of der(13;15)], five(50%) of mosaicism (mos) [two cases of mos 45,X/46,XX, one of mos 46,XX/47,XXX, one of mos 46,XY/47,XXY and one of mos 46,XY/47,XYY] and one (10%) of chromosome inversion [inv(10)]. In one of the couples, the female presented two concomitant alterations: t(2;13) and der(13;14). Chromosome abnormalities were found in 5% of the couples with a history of two abortions, in 10.3% with three abortions, and in 14.3% with four or more abortions. CONCLUSIONS: the incidence of chromosome abnormalities seen in our study (9.3%) was similar to most of the studies carried out in the last 20 years, varying from 4.8 to 10.8%. Nevertheless the high percentage of patients with mosaicism in our sample, has called our attention. It is believed that this fact may be associated to the high number of metaphases ordinarily analyzed in the present service.
Summary
Rev Bras Ginecol Obstet. 2009;31(2):68-74
DOI 10.1590/S0100-72032009000200004
PURPOSE: to asses the prevalence and clinical characteristics of couples with history of recurrent spontaneous abortion and chromosome abnormality, attended at the present service. METHODS: all the couples referred to our service due to history of recurrent spontaneous abortion, from January 1975 to June 2008, were evaluated. Only the ones whose chromosome karyotype analysis by GTG bands has been successfully made were included in the study. Clinical data on their age, as well as on the number of abortions, stillbirth, multiple malformations, livebirth per couple, and the result of the karyotype exam were collected. Fisher's exact test (p<0.05) has been used to compare the incidence of chromosome alterations found in our study, with data in the literature. RESULTS: there were 108 couples in the sample. Their ages varied from 21 to 58 years old among the men (average of 31.4 years old), and from 19 to 43 among the women (average of 29.9 years old). In ten couples, one of the mates (9.3%) presented chromosome alterations, which corresponded respectively to three cases (30%) of reciprocal translocation [two of t(5;6) and one of t(2;13)], two (20%) of Robertsonian translocation [two of der(13;14) and one of der(13;15)], five(50%) of mosaicism (mos) [two cases of mos 45,X/46,XX, one of mos 46,XX/47,XXX, one of mos 46,XY/47,XXY and one of mos 46,XY/47,XYY] and one (10%) of chromosome inversion [inv(10)]. In one of the couples, the female presented two concomitant alterations: t(2;13) and der(13;14). Chromosome abnormalities were found in 5% of the couples with a history of two abortions, in 10.3% with three abortions, and in 14.3% with four or more abortions. CONCLUSIONS: the incidence of chromosome abnormalities seen in our study (9.3%) was similar to most of the studies carried out in the last 20 years, varying from 4.8 to 10.8%. Nevertheless the high percentage of patients with mosaicism in our sample, has called our attention. It is believed that this fact may be associated to the high number of metaphases ordinarily analyzed in the present service.
