Résumé
The enzyme complex 3b-hydroxysteroid dehydrogenase/delta(5)-delta(4)-isomerase (3beta-HSD) is involved in the biosynthesis of all classes of active steroids. The expression of 3beta-HSD in human uterine endometrium during the menstrual cycle and decidua was examined in an effort to understand its role during ova implantation. 3beta-HSD was weakly expressed in the glandular epithelium of the proliferative phase and moderately expressed in the glandular epithelium of secretory phase of the endometrium. In the decidua of the ectopic pregnancy, 3beta-HSD was strongly expressed. The human uterine endometrial 3beta-HSD was identified as being the same type as the placental 3beta-HSD by RT-PCR and sequence analysis. In addition to the expression of 3beta-HSD, P450scc was expressed in the decidua of the ectopic pregnancy. These results suggest that pregnenolone might be synthesized from cholesterol by P450scc de novo and then, it is converted to progesterone by 3beta-HSD in the uterine endometrium. The data implies that the endometrial 3beta-HSD can use not only the out-coming pregnenolone from the adrenal gland but also the self- made pregnenolone to produce progesterone. The de novo synthesis of progesterone in the endometrium might be a crucial factor for implantation and maintenance of pregnancy.
Sujets)
Femelle , Humains , Grossesse , Cholestérol/composition chimique , Cholesterol side-chain cleavage enzyme/biosynthèse , Caduques/enzymologie , Endomètre/enzymologie , Expression des gènes/physiologie , Cycle menstruel/physiologie , Complexes multienzymatiques/biosynthèse , Placenta/enzymologie , Prégnénolone/biosynthèse , Progestérone/biosynthèse , Progesterone reductase/biosynthèse , Steroid isomerases/biosynthèseRésumé
Tetraploidy of human chromosome(92, XXYY) has been described very rarely. Liveborn infant with tetraploidy was reported in only 17 cases(complete 7 cases, mosaicism 10 cases) in the world, and no cases have been reported in Korea. The diploid-tetraploid mosaicism could arise during the early mitosis of the zygote. In one blastomeric cell, the chromosomes replicate but the cytoplasrn does not divide. We report a case of live infant with mosaic tetraploidy detected in lymphocyte(30%) and amniotic cell culture(25%), who presented with multiple congenital anomalies. A brief review of the literature is included.
Sujets)
Humains , Nourrisson , Corée , Mitose , Mosaïcisme , Tétraploïdie , ZygoteRésumé
OBJECTIVE: To evaluate the effect of serum obtained before and after treatment for endometriosis on in vitro fertilization and development of two cell mouse embryo. Design: Pretreatment and posttreatment comparoson of fertilization of mouse oocyte and embryo development in serum supplement form patients with endometriosis; result were compared using Stuent T-test analysis. METHOD: Infertility Clinic, Department of Obstetrics and Gynecology, Collage of Medicine, Won Kwang university, Korea. Patients was chosed eleven consecutive women with endometriosis. Interventions was all patient underwent laparoscopic or conservative surgery. This was followed by a 6-month course of burserelin acetate 900 microgram/d. Main outcome was measured total number of fertilization and embryo that was fertilization after 24 hours and reached blastocyst stage after 72 hours of incubation were compared before and after treatment. RESULT: Before treatment, 47% of the oocyte were fertilized and 31% of the embryo reached blastocyst stage. After treatment, Significantly more fertilized and Significantly more embryo developed to blastocyst on the stage I and II of endometriosis. CONCLUSION: The fertilization and embryo toxicity of serum samples from patients with endometriosis is lost after treatment.
Sujets)
Animaux , Femelle , Humains , Souris , Grossesse , Blastocyste , Développement embryonnaire , Structures de l'embryon , Endométriose , Fécondation , Fécondation in vitro , Gynécologie , Infertilité , Corée , Obstétrique , OvocytesRésumé
OBJECTIVE: To study the clinical characteristics of pregnancy induced hypertension(PIH). METHODS: Five hundred seventy-five cases of PIH and 7,702 cases of normotensive pregnancies who were delivered their infants at Wonkwang University Hospital from January, 1994 to December, 1998 were selected for the study. The data were collected by review of the hospital record and the statistical analysis was performed using Chi-square tests, and statistical significance was defined as p<0.05. RESULTS: The incidence of PIH was 7.1% of total deliveries. Among the PIH, the incidence of mild preedampsia was found in 59%, severe preeclampsia in 36%, and edampsia in 5%. The most prevalent gestational period was 38-42wks gestation in mild PIH and 33-37wks gestation in severe PIH & eclampsia. The incidence of cesarean section was significantly higher in severe PIH & eclampsia(72.2%) than in mild PIH(48.7%) and normotensive pregnancies(39.7%). The incidence of hypoalbuminemia, preterm labor, placental abruption, disseminated intravascular coagulation, and pulmonary edema were significantly higher in severe PIH & edampsia than in mild PIH and normotensive pregnancies. Compared with normotensive pregnancies or mild PIH, severe PIH & eclampsia had significantly elevated risks for low birth weight, intrauterine growth retardation, fetal distress, low apgar score, meconium stained, and neonatal deaths. CONCLUSION: The incidence of PIH is not decreasing and it still an important role in the cause of maternal and perinatal mortality and morbidity in Korea. So, further studies are necessary to prepare a guide for the treatment of PIH.
Sujets)
Femelle , Humains , Nourrisson , Nouveau-né , Grossesse , Grossesse , Hématome rétroplacentaire , Score d'Apgar , Césarienne , Coagulation intravasculaire disséminée , Éclampsie , Souffrance foetale , Retard de croissance intra-utérin , Archives administratives hospitalières , Hypertension artérielle gravidique , Hypoalbuminémie , Incidence , Nourrisson à faible poids de naissance , Corée , Méconium , Travail obstétrical prématuré , Mortalité périnatale , Pré-éclampsie , Oedème pulmonaireRésumé
We report the first de novo case of a heterochromatic duplication on the long arm of the chromosome 9, which then was pericentrically inverted at p11q13. This condition was detected prenatally and carry to term. We then performed the follow up for over 1 year. So far, there seems to be no phenotypical abnormalities.
Sujets)
Adulte , Femelle , Humains , Grossesse , Aberrations des chromosomes , Zébrage chromosomique , Chromosomes humains de la paire 11 , Chromosomes humains de la paire 9 , Duplication de gène , Hybridation fluorescente in situ , Inversion chromosomique , Caryotypage , Phénotype , Diagnostic prénatal , Translocation génétiqueRésumé
OBJECTIVE: To ananlyze the direct effect of nitric oxide (NO), generated from sodium prusside (SNP) on the embryo developments in reproductive process. DESIGN: ova from mouse were treated to allow fertilization in in vitro culture. And the samples of fertilized ova were alloted into five alliqutos. Each alliquot was cultured in media treated with either concentration at 0 (n=92), 25microM (n=84), 50microM (n=80), 100microM (n=77), 500microM (n=54) of SNP. Main Outcome MEASURE: Rates of embryonal cell cleavages, viability and cell morphology were assessed during in vitro fertilization and culture. RESULTS: As analyse the cell cleavage at 24 hours after in vitro culture of fertilised egg in variuos NO concentration, all of egg cells of each alliquot were developed to 2~4 cell stage. But the alliquot of egg cells treated with 500microM, which were totally degenerated. And also all embryonal cells of each alliquot were developed to 8 cell stage and morula stage on culture continuosly. And the embryonal cells of each alliquot were analysed at 24 and 48 hours following the in vitro culture. The rates of cell fragmentation and fusion were 4.2+/-3.4% in control group which is not treated with NO, while experimental groups was high, as rated 23.4+/-6.2% in 25microM, 28.2+/-5.7% in 50microM and 32.1+/-6.4% in 100microM concentration of NO. Accordingly the rate of abnormal morphology of embryonal cell in control was lower significantly than that in each alliquot of experimental groups (p<0.05). And the degenerated rates of embryonal cells were 0% in control, 17.8+/-6.7% in 25microM, 23.6+/-4.7% in 50microM and 26.8+/-11.2% in 100microM at 8 cells and morula on culture of 48 and 72 hours. On the examination of embryonal cells developed to blastocyst through in vitro culture, the rates of degenerated cells were 16.8+/-7.2% in control, 37.5+/-6.2% in 25microM, 73.4+/-4.6% in 50microM, 100% in 100microM. CONCLUSION: This results suggeted that the No in any concentrations is harmful on embryos in view of morphology as well as viability of cell, and the toxicity of No on embryo is stronger at condition in higher concentration of NO.
Sujets)
Animaux , Souris , Blastocyste , Structures de l'embryon , Fécondation , Fécondation in vitro , Morula , Monoxyde d'azote , , Ovule , SodiumRésumé
Ror fetal sex determination by the PCR method, oilgoprimers to Y- chromosome gene, DYZI, SRY, and AMGL were synthesized genomic DNA was extracted from male and female placenta for the control use. DYZI represented 154 bp single band to 0.001 pg/ml male genomic DNA but did not represent 154 bp band in female genomic DNA, SRY represented 341 bp bandto 1 pg/ml male genomic DNA in 2% agarose gel eleftrophoresis stained with ethidium bromide. DYZI was 1,000 fold sensitive than Sry and AMGL. DYZI and SRY could not identify the PDR failure from female but AMGL identified to 1,000-fold. During the dyal ampiification of female genomic DNA mixed with male genomic DNA, 0.00125 pg/nl, 1:400 part, male genomic DNA contamination represented male band but SRY amplification did not represent male band. It was suggested that SRY gene was deleted in two 46,XY felmle cases. For fetal sex determination, PCR with DYZL, SRY, and AMGL was performed in 10 cases. For fetal sex determination, PCR with DYZL, SRY, and AMGL with karyotyping in 10 cases of chorionic villi sex dietermination, PCR with DYZI, SRY, and AMGL was performed in 10 cases. For feral sex determination, PCR with DYZI, SRY, and AMGL with karyothping result, fetal sex determination, PCR with DYZI, SRY, and AMGL was performed in 10 Cases of choricinic villi and 15 cases of amnionic cells. By the comparison with karyotyping result, fetal sex determination was achieved successfully in all 23 samlies using PCR of SRY and AMGL but false result was detected in 3 cases(13%) using DYZI. Acording to our results, it was concluded that DYZL was 1,000-fold sensitive than SRY and AMGL but could not be used because of its false results, and AMGL and SRY must be used concomitantly for precise sex determination.
Sujets)
Femelle , Humains , Mâle , Amnios , Villosités choriales , ADN , Contamination par de l'ADN , Éthidium , Gène sry , Caryotypage , Placenta , Réaction de polymérisation en chaîne , AgaroseRésumé
In order to elucidate the mechanism of oxidative damage of cadimu(Cd) on culturedmouse preimplantation embyors.The embryotoxocity of Cd was examined after cultured mouse preimplantation embryoswere exposed to various concentrations of CdCl2. In addition, the protected effect of antioxidant,catalase against Cd-induced embryotoxicity was investigated.CdCl2 decreased the development of cultured mouse preimplantation embryos in dose andtime-dependent manners, and also oxidative damage was involoved in Cd-induced embryotoxicityin mouse preimplantation embryos by the prevention of catalase on Cd-induced toxicity.
Sujets)
Animaux , Souris , Blastocyste , Chlorure de cadmium , Cadmium , Catalase , Structures de l'embryonRésumé
In order to elucidate the mechanism of oxidative damage of cadimu(Cd) on culturedmouse preimplantation embyors.The embryotoxocity of Cd was examined after cultured mouse preimplantation embryoswere exposed to various concentrations of CdCl2. In addition, the protected effect of antioxidant,catalase against Cd-induced embryotoxicity was investigated.CdCl2 decreased the development of cultured mouse preimplantation embryos in dose andtime-dependent manners, and also oxidative damage was involoved in Cd-induced embryotoxicityin mouse preimplantation embryos by the prevention of catalase on Cd-induced toxicity.
Sujets)
Animaux , Souris , Blastocyste , Chlorure de cadmium , Cadmium , Catalase , Structures de l'embryonRésumé
The cell cycle is composed of a series of steps which can be negatively or positively regulated by various factors. p53 gene aberrations are common in human malignancies, and recent studies suggest that in cervical carcinoma p53 function is inactivated either by complex formation wilh human papilloma virus (HPV) E6 product or by gene mutation. To study the expression of p53 gene in the cervical cancer and cervical intraepithebal neoplasia, immunohistochemistry for the p53 protein was done in the 47 cases of squamous cell carcinoma, 6 cases of adenocarcinoma and 32 cases of cervical intraepithelial neoplasia. I. The p53 protein was detected in the 31% of cervical intraepithelial neoplasia (10/32 cases). 2. The p53 protein was detected in the 55% of invasive cervical cancer (29/53 cases). 3. By the histologic type of cervieal cancer, the p53 protein was detected in the 57% of squamous cell carcinoma (27/47 cases) and 33% of(2/6 cases) adenocarcinoma. The p53 protein wes more frequently detected in the squamous cell carcinoma than in the adenocarcinoma. 4. By the staging in cervical cancer, the p53 protein was detected in the 31% of stage 0, 50% of Stage Ia, 50% of stage I b, 75% of IIa and 50% of stage II b.
Sujets)
Humains , Adénocarcinome , Carcinome épidermoïde , Cycle cellulaire , Dysplasie du col utérin , Gènes p53 , Immunohistochimie , Papillome , Tumeurs du col de l'utérusRésumé
The gene for tyrosinase has been mapped to the long arm of chromosome 11 at 11q14-21. The gene is at least 50Kb in length and its coding region is divided into five exons. Until now several mutations of the tyrosinase gene have been identifed in patient with typical oculocutaneous albinism (OCA) who are responsible for tyrosinase negative OCA. It may be possible to determine the types of OCA by measuring the hairbulb tyrosinase activity. Hairbulb tyrosinase activity was examined in a Korean albino to determine the type of OCA. And also tyrosinase assay was carried out in normally pigmented individuals and all members of a Korean albino's family to examine the tyrosinase activities. Five exons of tyrosinase gene from a Korean albino were amplified by polymerase chain reaction. Each amplified exon segments were independently subcloned and DNA sequences of clones were determined. The results obtained were as follows : 1. A Korean albino had no measurable hairbulb tyrosinase activity and was identified as type IA (tyrosinase negative) oculocutaneous albinism. 2. Normally pigmented individuals had different ranges of hairbulb tyrosinase activity. 3. A Korean albino had two single base insertions within exon V (between 337bp and 338bp, 353bp and 354bp) of tyrosinase gene. These insertional mutations might disrupt tyrosinase function and were associated with a total lack of melanin biosynthesis.
Sujets)
Humains , Albinisme , Albinisme oculocutané , Bras , Séquence nucléotidique , Chromosomes humains de la paire 11 , Codage clinique , Clones cellulaires , Exons , Mélanines , Monophenol monooxygenase , Réaction de polymérisation en chaîneRésumé
No abstract available.
Sujets)
Femelle , Grossesse , Fibronectines , Hypertension artérielle gravidique , Plasma sanguinRésumé
No abstract available.
Résumé
No abstract available.