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1.
Heliyon ; 9(9): e19333, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37681184

ABSTRACT

The activins and inhibins are glycoproteins with a role in the follicular development of vertebrates, that are found in follicular fluid and somatic follicular cells, with a different pattern among taxa. The principal function of activin (Act) is to modulate the follicle-stimulating hormone (FSH) synthesis and secretion, whereas inhibin (Inh) downregulates it. Both factors are modulators of intraovarian follicular recruitment, oocyte maturation, cell proliferation, and steroidogenic activity. Our aim was to characterize the immunolocalization of Act and Inh in the ovarian follicles during the reproductive cycle of the lizard Sceloporus torquatus. Act was detected in the granulosa cells and oocyte cortex in the different stages of follicular development. On the other hand, we identified Inh in the oocyte cortex and the cytoplasm of pyriform and small cells of previtellogenic follicles. Also, we found immunoreactivity in the oocyte cortex, theca, and small cells of vitellogenic and preovulatory follicles. Our data provide evidence that Act and Inh have changes related to the stage of follicular development. This dynamic appears to be conserved among vertebrates and is fundamental to ensure an adequate follicular development in this specie.

2.
Reprod Fertil Dev ; 34(10): 699-712, 2022 Jun.
Article in English | MEDLINE | ID: mdl-35366958

ABSTRACT

The present work aimed to evaluate the chromatin compaction of rooster spermatozoa along the male reproductive tract, and to study the vas deferens lining cells, potentially involved in sperm maturation. Chromomycin A3 (CMA3) was used to determine the chromatin compaction of spermatozoa from testis (T), proximal (including epididymis, V1), intermediate (V2) and distal (V3) vas deferens, and ejaculate (E). Six Birchen Leonesa roosters were used. E was obtained in vivo by dorso-ventral massage. V1, V2 and V3 sperm were obtained post mortem (six pairs of vasa deferentia), by flushing. T was obtained by washing the testes, cut in halves. The fixed cells were stained with CMA3 and propidium iodide for flow cytometry assessment. Results showed higher (P P P.


Subject(s)
Chickens , Vas Deferens , Animals , Chromatin , Epididymis , Male , Spermatozoa
4.
Rev. toxicol ; 32(2): 98-101, 2015. tab
Article in Spanish | IBECS | ID: ibc-146468

ABSTRACT

Diferentes autores afirman que existe un elevado volumen de intoxicaciones por monóxido de carbono que pasan inadvertidas para el personal sanitario, lo que representa un importante problema de salud. Para confirmar esta hipótesis en un área de salud determinada, sobre la que se dispone de reciente información en relación al volumen de intoxicaciones que sí son detectadas, se realizó este trabajo. Para ello, se seleccionó como población de estudio al conjunto de pacientes que acudieron al Servicio de Urgencias del Hospital do Salnes, por cualquier motivo, durante el mes de febrero de 2013. Se recogió una amplia muestra representativa de esta población por un sistema aleatorio sistemático, quedando constituida por 1501 pacientes. A todos ellos se les realizó una medición no invasiva de carboxihemoglobina mediante pulsicooximetría con el objetivo de detectar todas las intoxicaciones, tanto las sospechadas por el personal sanitario como las que pasarían inadvertidas. El número de intoxicaciones detectadas en la muestra fue de 10, lo que representa el 0,7% (± 0.34% p< 0.05) de las urgencias atendidas, siendo 18 (8,8-27,1) el número de casos esperados para la población de estudio. Esta cifra fue muy superior a la de intoxicados que se detectaron en el trabajo ordinario del personal sanitario durante los diez años previos, en el mismo mes de febrero y en el mismo centro sanitario, con una media anual de 1.3 casos (DS: 2.8), por lo que se concluye confirmando la hipótesis de que el número de intoxicaciones inadvertidas por monóxido de carbono es muy elevado (AU)


Different authors state that there is a high volume of carbon monoxide poisoning that go unnoticed for health workers, representing a major health problem. To confirm this hypothesis in a particular area of ​​health, on which recent information regarding the volume of poisonings that are detected itself, this work was performed. To do this, it was selected as study population to all patients presenting to the emergency department of Salnés Hospital, for any reason, during the month of February 2013. A broad cross-section of the population was collected by a systematic random system , it is composed of 1501 patients. All subjects underwent a noninvasive measurement of carboxyhemoglobin by pulsicooximetría in order to detect all poisonings, both suspected by medical personnel as they go unnoticed. The number of poisonings detected in the sample was 10, representing 0.7% (± 0.34% p <0.05) of emergencies attended, with 18 (8.8 to 27.1) for the number of expected cases the study population. This figure was much higher than that of intoxicated that were detected in the ordinary work of health workers during the previous ten years, in the month of February and at the same health center with an annual average of 1.3 cases (DS: 2.8) , so it is concluded confirming the hypothesis that the number of intoxications inadvertent carbon monoxide is very high


Subject(s)
Female , Humans , Male , Carbon Monoxide Poisoning/epidemiology , Carbon Monoxide Poisoning/prevention & control , Carboxyhemoglobin/toxicity , Oximetry/instrumentation , Oximetry/methods , Oximetry , Carbon Monoxide Poisoning/complications , Carbon Monoxide Poisoning/physiopathology , Emergencies/epidemiology , Emergency Medical Services/methods , 28599 , Oximetry/statistics & numerical data , Oximetry/trends
5.
Emergencias (St. Vicenç dels Horts) ; 24(2): 121-125, abr. 2012. tab
Article in Spanish | IBECS | ID: ibc-104000

ABSTRACT

Objetivos: Determinar la tasa de tentativas de suicidio del Área Sanitaria do Salnés atendidas en su servicio de urgencias de referencia y analizar diferentes variables epidemiológicas Método: Estudio retrospectivo en el que se registraron todas las tentativas de suicidio durante un periodo de 5 años atendidas en urgencias, de las cuales se recogió el día y la horade la atención en urgencias, así como la edad, el sexo, los antecedentes de la patología psiquiátrica, el alcoholismo, la toxicomanía y los intentos de suicidio previos en el paciente. Resultados: Se registraron 285 tentativas de suicidio (tasa de 76,1 por 100.000 habitantes y año): la edad media fue de 35 ± 15 años y el 58,9% eran mujeres. Se detectaron antecedentes psiquiátricos en el 74,4% de los pacientes, y el 46,7% tenía antecedentes de intento de suicidio, y estos antecedentes se concentraban más en las edades medias de la vida (18-65 años). Las mujeres fueron más proclives a realizar tentativas y, entre los hombres que lo intentaron, el antecedente de politoxicomanía y alcoholismo estuvo más presente que en las mujeres. Se detectó una menor probabilidad de intento de suicidio en el mes de febrero y los miércoles. Conclusiones: Los servicios de urgencias permiten calcular las tasas de tentativas de suicidio de su área de referencia y establecer las características fundamentales de dichas tentativas (AU)


Objectives: To determine the rate of attempted suicide in the health care area of Salnés, Spain, attended by the assigned emergency medical service (EMS) provider and to analyze epidemiologic variables. Methods: Retrospective study of all suicide attempts attended by the EMS over a 5-year period. Data analyzed were day and time emergency care was given, age of the patient, sex, history of psychiatric disease, alcoholism, drug abuse, and history of attempted suicide. Results: A total of 285 attempts were on record (annual incidence, 76.1/100 000 population). The mean (SD) age was 35 (15)years and 58.9% were women. A history of psychiatric disease was present in 74.4% of the patients, and 46.7% had attempted suicide before. This history was more common in patients in the age range of 18-65 years. Women attempted suicide more often than men. A history of multiple drug abuse and alcoholism was more common in the men who attempted suicide than in the women. Fewer attempts occurred in February and on Wednesdays (AU)


Subject(s)
Humans , Emergency Medical Services/statistics & numerical data , Suicide, Attempted/statistics & numerical data , Age and Sex Distribution , Substance-Related Disorders/epidemiology , Alcoholism/epidemiology , Retrospective Studies
7.
Emergencias (St. Vicenç dels Horts) ; 22(1): 28-32, feb. 2010. ilus, tab
Article in Spanish | IBECS | ID: ibc-98578

ABSTRACT

Objetivos: Determinar si un mayor volumen de urgencias atendidas en los hospitales comarcales genera un mayor número de transportes interhospitalarios, inquiriendo si el tamaño o los recursos de los hospitales emisores pudieran influir. Método: Estudio descriptivo y analítico, mediante un muestreo “no probabilístico” por etapas, seleccionando 12 hospitales comarcales pertenecientes al Grupo de Estudio de la Medicina de Urgencias y de los Hospitales Comarcales (GEMUHC). Se determinó el número de urgencias atendidas, el número de traslados realizados, el tamaño del hospital comarcal y la disponibilidad de unidad de cuidados intensivos (UCI) en el propio centro. Se realizó un análisis de correlación entre las diferentes variables. Resultados: Se demostró una buena correlación entre el volumen de urgencias y de traslados en el grupo de hospitales gallegos por un lado y en los no gallegos por el otro, y se apreció que cuando los hospitales no gallegos carecían de UCI la correlación era casi perfecta. Cuando los hospitales se agruparon en función de su tamaño se demostró una muy buena correlación estadística entre las dos variables antes comentadas tanto en los hospitales pequeños como en los de mediano tamaño. Conclusiones: El volumen de transportes interhospitalarios es directamente proporcional al número de urgencias atendidas, en el que se observa homogeneidad en el comportamiento de los diferentes hospitales comarcales en función de su tamaño, de su localización y de sus recursos (AU)


Objectives: To determine whether higher emergency department volume in regional hospitals generates a larger number of interhospital transfers and whether the referring hospital's resources influence the number of transfers ordered. Methods: Descriptive, analytic study of a non probabilistic sample. The study was carried out in stages in 12 selected hospitals that were members of the regional hospital study group (GEMUHC, an interest section of the Spanish Society of Emergency Medicine ([SEMES]). Information was collected on the number of emergencies attended, the number of transfers, the size of the regional hospital, and the availability of an intensive care unit (ICU) in the regional hospital. Correlations between the studied variables were calculated, with statistical significance set at P<.05. Results: Good correlation was observed between the volume of emergencies attended and the number of transfers carried out in the hospitals inside and outside Galicia. For hospitals without an ICU outside Galicia, the correlation was nearly perfect. When hospitals were grouped by size, there was high correlation between the 2 afore mentioned variables and the number of transfers ordered by both small- and medium-sized hospitals. Conclusions: The volume of interhospital transfers is directly proportional to the number of emergencies attended. The various regional hospitals all behave similarly, according to their size, location, and resource (AU)


Subject(s)
Humans , Transportation of Patients/organization & administration , Emergency Medical Services/statistics & numerical data , Referral and Consultation/statistics & numerical data , Workload/statistics & numerical data , Health Care Levels/organization & administration
8.
Emergencias (St. Vicenç dels Horts) ; 19(4): 180-186, jul.-ago. 2007. ilus, tab
Article in Es | IBECS | ID: ibc-055181

ABSTRACT

Objetivos: En 2006 SEMES Galicia aprobó la creación de un blog de medicina de urgencias, adaptándose a las nuevas tendencias en comunicación. Después de un año realizó un estudio para determinar el interés que despertaba, cuyos objetivos fueron, entre otros, analizar su frecuentación, el grado de fidelidad, el porcentaje de abandono desde la misma página de acceso y la relación entre el número de artículos publicados y su frecuentación. Material y método: Se realizaron estudios descriptivos, analíticos y de correlación para determinar la frecuentación, la fidelidad, el porcentaje de abandono desde la página de acceso y la distribución geográfica de los lectores, así como la relación entre los artículos publicados y las visitas recibidas. Se utilizaron los programas Google Analytics y el SPSS 12.0 for Windows. Resultados: A lo largo del año creció la frecuentación del blog cada mes y pasó de una única página vista en el mes de enero a 3.800 en diciembre. El 93% de las visitas procedieron de España, sobre todo de Galicia (50%). La fidelidad fue media, alta o muy alta en el 49%. Cuando la página de acceso al blog era la principal, el 52% no lo abandonaba y se visitaban otras secciones. La frecuentación del blog estaba directamente relacionada con el número de artículos publicados (r = 0,9, p < 0,01). Conclusiones: El interés por el blog ha crecido a lo largo del año. La mayoría de nuestros visitantes fueron fieles, pues repitieron sus visitas, y leyeron otras secciones además de la página principal. La frecuentación del blog estuvo directamente relacionada con el número de artículos publicados. El 93% de visitas procedieron de España. El blog SEMES Galicia es un poderoso y barato medio de comunicación (AU)


Aims and purpose: In 2006, SEMES Galicia approved the creation of an Emergency Medicine blog considering the more recent trends in communications. One year later, a study has been carried out to assess the interest level achieved. A number of aspects were analysed, such as, among others, the number of visits, degree of fidelity, dropout rate from the main access page and the relationship between the number of articles published and the number of visits. Material and methods: Descriptive, analytical and correlation studies were performed for the assessment of the number of visits, fidelity, dropout rate and geographical distribution of the readership. The relationship between the number of articles published and the number of visits to the blog was also examined. The Google Analytics and SPSS 12.0 for Windows software packages were used for the analyses. Results: The number of visits increased monthly over the year, from just one page visited in January to 3,800 in December. Spain was the origin of 93% of the visits, with Galicia occupying the first place (50%). The degree of fidelity was classed as medium, high or very high in 49% of the visits. When the accessed page was the home page 52% of the visitors did not drop out and visited several other sections of the blog. The level of frequentation was clearly related to the number of articles published (r = 0.9; p<0.01). Conclusions: The interest on this blog has increased throughout the year studied. Most visitors evidenced a high degree of fidelity, repeating visits and accessing several other sections besides the home page. The number of visits was also directly related to the number of articles published. Visits originated all over the world but mainly in Spain (93%). The SEMES Galicia blog is a powerful and non-expensive communications tool (AU)


Subject(s)
Humans , Internet , Emergencies , Communications Media , Information Dissemination/methods
9.
Ginecol Obstet Mex ; 67: 85-93, 1999 Feb.
Article in Spanish | MEDLINE | ID: mdl-10327771

ABSTRACT

The embryo implantation is a complex event that involve a interactions sequence among conceptus and uterine endometrium. Several cytokines and growth factors participate as autocrine/paracrine modulators in such interrelations. In this paper the role and expression and functions of cytokines and growth factors in early pregnancy are analyzed. Post-coito expression of cytokines in uterine cells and leukocytes promoting a uterine inflammatory response to semen. The growth factors are expressed in early pregnancy for several uterine tissues. The ovarian steroid hormones modulate the synthesis and secretion of this molecules in uterus. Autocrine and paracrine regulation are require for embryo implantation. At least interleukin-1, leukemia inhibitor factor and epidermal growth factor receptor are indispensable to mice embryo implantation.


Subject(s)
Cytokines/metabolism , Embryo Implantation , Embryo, Mammalian/physiology , Growth Substances/metabolism , Animals , Female , Glucose-6-Phosphate Isomerase , Humans , Mice , Pregnancy , Steroids
10.
Ginecol Obstet Mex ; 64: 406-10, 1996 Sep.
Article in Spanish | MEDLINE | ID: mdl-8964542

ABSTRACT

In this paper the role of estrogen and growth factors in the uterine cellular proliferation is analyzed. The evidences indicate that the estradiol-stimulate cell division is associated with the induction of expression of a variety of growth factors from the all major uterine cell types (epithelia, stroma and myometrium). These growth factors amplify the estrogen proliferation signal in autocrine and/or paracrin fashion. The best-studied growth factors in the uterine response to estradiol are epidermal growth factor (EGF) and insulin-like growth factor (IGF-1). Uterine cell proliferation is a complex process that involves interactions of several growth factors, ovarian steroids hormones action and cell to cell signaling.


Subject(s)
Cell Division/drug effects , Epidermal Growth Factor/pharmacology , Estradiol/pharmacology , Insulin-Like Growth Factor I/pharmacology , Uterus/cytology , Adult , Female , Humans
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