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1.
Gene ; 363: 113-22, 2005 Dec 19.
Article in English | MEDLINE | ID: mdl-16297570

ABSTRACT

In this study we report the characterisation of a new splice variant, here denominated splice variant 4 (accession number AF258557) of the human Multiple Ankyrin repeats Single KH domain (hMASK) (accession number AF521882) and the hMASK-4E-Binding Protein 3 Alternative Reading Frame (hMASK-BP3(ARF)) (accession number AF521883), containing a number of ANK-repeat motifs. Ankyrin (ANK) repeat-containing proteins carry out a wide variety of biological activities and are involved in processes, such as cell differentiation and transcriptional regulation. The present study reports the computer analysis of these splice variant cDNAs and their broad mRNA expression in different normal human tissues and cancer cell lines. An upregulation of the splice variant mRNAs expression was observed after HL-60 and erythroblast differentiation. The upregulation of splice variant 4 mRNA was considerably higher than those of the other variants, during erythroid differentiation.


Subject(s)
Bone Marrow Cells/metabolism , Cell Differentiation , Gene Expression , Protein Serine-Threonine Kinases/genetics , RNA Splicing , Base Sequence , Bone Marrow Cells/cytology , Cell Line, Tumor , DNA Primers , Humans , Polymerase Chain Reaction
2.
Fertil Steril ; 83(1): 110-5, 2005 Jan.
Article in English | MEDLINE | ID: mdl-15652895

ABSTRACT

OBJECTIVE: To evaluate the clinical response and endometrial morphology during the implantation window on ovarian hyperstimulation with the aromatase inhibitor letrozole in infertile ovulatory women. DESIGN: Prospective trial in infertile patients. SETTING: Tertiary care hospital. PATIENT(S): Eight ovulatory infertile patient candidates for ovarian superovulation. INTERVENTION(S): Subjects were monitored in one control cycle. In the next cycle, they received letrozole 5.0 mg daily on days 3 through 7 after menses. MAIN OUTCOME MEASURE(S): Number of ovulatory follicles; dominant follicle diameter; endometrial thickness; hormonal profile of FSH, LH, E(2), A, T, and P; endometrial histological dating; and pinopode formation assessed by scanning electron microscopy. RESULT(S): Cycles stimulated with letrozole resulted in more ovulatory follicles than did natural cycles (mean +/- SD 2.0 +/- 0.9 vs. 1.0 +/- 0.0), which attained a greater preovulatory diameter (mean +/- SD 23.8 +/- 2.7 vs. 19.3 +/- 2.1 mm), with similar endometrial thickness at midcycle compared with spontaneous cycles. Endocrine profile of medicated cycles was characterized on day 7 by increased levels of LH (5.9 +/- 0.8 vs. 3.5 +/- 0.4 IU/mL), reduced E(2) (98.4 +/- 11.4 vs. 161.5 +/- 14.7 pmol/L), and elevated androgens. Preovulatory and midsecretory E(2) were similar to spontaneous cycle, and P levels during midluteal phase were significantly elevated (44.2 +/- 4.6 vs. 27.7 +/- 4.6 pmol/L). Endometrial morphology during the implantation window in letrozole-stimulated cycles was characterized by in-phase histological dating and pinopode expression on scanning electron microscopy. CONCLUSION(S): Letrozole induces moderate ovarian hyperstimulation in ovulatory infertile patients with E(2) levels similar to spontaneous cycles and higher midluteal P, leading to both a normal endometrial histology and development of pinopodes, considered to be relevant markers of endometrial receptivity.


Subject(s)
Aromatase Inhibitors/therapeutic use , Endometrium/pathology , Infertility, Female/drug therapy , Nitriles/therapeutic use , Ovulation Induction , Triazoles/therapeutic use , Adult , Estradiol/blood , Female , Humans , Infertility, Female/blood , Infertility, Female/pathology , Letrozole , Progesterone/blood , Prospective Studies
3.
Rev. chil. obstet. ginecol ; 64(1): 29-33, 1999. tab
Article in Spanish | LILACS | ID: lil-245471

ABSTRACT

La incompetencia cervical puede presentarse con dilatación cervical avanzada y membranas protruyentes, la mayoría de las veces la única posibilidad de rescatar ese embarazo es el cerclaje de emergencia. Sin embargo, existe poca evidencia en la literatura acerca de la conveniencia de realizar cerclaje de emergencia. Reportamos la experiencia acumulada en el Hospital Clínico de la Universidad Católica, entre 1993 y 1998, los procedimientos y el manejo realizado en este grupo de 5 pacientes. En nuestra serie la prolongación del embarazo fue un promedio de 37,7 días con un rango entre 17 y 82 días. La duración promedio del cerclaje in situ fue de 35,5 días. La sobrevida neonatal alcanzó el 60 por ciento y hubo infección ovular clínica en dos (40 por ciento) de las cinco pacientes. Hubo RPM alejada del procedimiento en 40 por ciento de los casos. El promedio de peso de los RN fue de 1.365 g, con un rango entre 840 y 2.325 g. A pesar de la falta de evidencia, existe consenso que este procedimiento permite salvar el embarazo para alcanzar la viabilidad fetal, aunque la incidencia de complicaciones especialmente infecciosas puede ser muy alta


Subject(s)
Humans , Female , Pregnancy , Adult , Uterine Cervical Incompetence/surgery , Pregnancy Maintenance , Pregnancy Complications/surgery , Obstetric Surgical Procedures/methods , Ultrasonography, Prenatal
4.
Rev. chil. obstet. ginecol ; 63(6): 451-4, 1998.
Article in Spanish | LILACS | ID: lil-243900

ABSTRACT

La incompetencia cervical es la causa estructural más frecuente de aborto de II trimestre y parto inmaduro. Su diagnóstico y tratamiento es controvertido. Presentamos nuestra experiencia reciente, indicaciones y manejo de esta patología. Entre 1993 y 1998, se realizaron 31 cerclajes electivos de tipo McDonald en 29 pacientes que tuvieron su parto en el Hospital Clínico de la Universidad Católica, 52 por ciento de las pacientes tenía antecedentes de abortos y 31 por ciento de partos prematuros. Se hizo diagnóstico de incompetencia cervical por historia de abortos de II trimestre en 13 pacientes y por test de dilatadores Hegar en 6. La edad promedio de cerclaje fue 13 semanas y de retiro 36 semanas. El cerclaje se retiró antes de las 24 semanas en 3 pacientes por: feto anencéfalo, trabajo de aborto y RPM. Un 48 por ciento tuvo al menos un cultivo durante su embarazo, el 60 por ciento resultó positivo. Hubo 73 por ciento de parto vaginal y el peso promedio de los RN fue de 2860 g. No hubo apgares bajos. El cerclaje es una alternativa efectiva y segura de tratamiento para la incompetencia cervical, se hace énfasis en el examen ultrasonográfico y en los cultivos seriados cervicovaginales


Subject(s)
Humans , Female , Pregnancy , Adult , Suture Techniques , Uterine Cervical Incompetence/surgery , Abortion, Habitual/prevention & control , Elective Surgical Procedures , Pregnancy Complications , Pregnancy Trimester, Second , Uterine Cervical Incompetence/complications , Uterine Cervical Incompetence/diagnosis
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