Study of seroprevalence in health personnel: Relation of vaccination with the presence of previous infection by SARS-COV-2 in the context of the national vaccination campaign for coronavirus after the first dose of the Gam-COVID-VAc vaccine (Sputnik -V). / Estudio de seroprevalencia en personal de salud: Relación de la vacunación con la presencia de infección previa por SARS-COV-2 en el contexto de la campaña nacional de vacunación para coronavirus luego de la primer dosis Gam-COVID-VAc (Sputnik-V)

In the context of the vaccination campaign for health personnel at high risk of exposure to SARS-COV-2 with the Sputnik-V vaccine, a study of seroprevalence of antibodies is proposed through the lateral flow test (Test of IgM and IgG antibodies of lateral flow type. COVID19 IgG / IgM Rapid Test from Orient Gene Biotech) in individuals who have or have not received the Sputnik-V vaccine. During the months of January to March 2021 in all health personnel who voluntarily give their consent, after at least 21 days after the first dose of the vaccine and in personnel who have not been vaccinated, the detection will be carried out qualitative antibody test with the lateral flow test (COVID19 IgG / IgM Rapid Test from Orient Gene Biotech), also recording previous RT-PCR, previous serology with IgG with a similar method, vaccination and seroconversion attributable to the first vaccination dose. Episodes of new infection will also be recorded in the period from 7 days after vaccination and during the follow-up period. The main objective of this work is to detect the prevalence of antibodies to SARS-COV-2 in health personnel with high exposure after the first dose of the Sputnik-V vaccine, as well as in unvaccinated personnel and its relationship with a previous confirmed infection for SARS -COV-2.

En el contexto de la campaña de vacunación del personal de salud con alto riesgo de exposición para SARS-COV-2 con la vacuna Sputnik 5, se plantea la realización de un estudio de seroprevalencia de anticuerpos a través del test de flujo lateral (Test de anticuerpos IgM e IgG de tipo flujo lateral. COVID19 IgG/IgM Rapid Test from Orient Gene Biotech) en individuos que haya o no recibido la vacuna Sputnik 5. Durante los meses de Enero a Marzo del 2021 en todo el personal de salud que preste en forma voluntaria su consentimiento, luego de al menos 21 días luego de la primera dosis de la vacuna y en personal que no haya sido vacunado, se realizará la detección cualitativa de anticuerpos con el test de flujo lateral (COVID19 IgG/IgM Rapid Test from Orient Gene Biotech) consignándose además PCR-RT previa, serología previa con IgG con método similar, vacunación y seroconversión atribuible a la primera dosis de vacunación. También se consignará episodios de infección nueva en el período que va desde 7 días luego de la vacunación y durante el período de seguimiento.  El objetivo principal de este trabajo es detectar la prevalencia de anticuerpos para SARS-COV-2 en personal de salud de alta exposición luego de la primera dosis de la vacuna Sputnik 5 además en personal no vacunado y su relación con infección previa confirmada para SARS-COV-2.

Papel del tabaquismo en la colitis ulcerosa: ¿el hábito tabáquico protege del desarrollo de la enfermedad? / Role of smoking habit in ulcerative colitis: does smoking habit protect the development of the disease?

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[Hyperprolactinemia and selective serotonin reuptake inhibitors. A narrative review of the literature]. / Hiperprolactinemia asociada al uso de antidepresivos inhibidores de la recaptación de serotonina. Una revisión narrativa de la literatura.

A large number of scientific papers have reported the relationship between the development of hyperprolactinemia and the use of psychotropic drugs, especially the role of antipsychotics which are antidopaminergic drugs. However, less information is known about the role of antidepressants in the development of hyperprolactinemia, specially the selective reuptake inhibitors (SSRIs). The prevalence of hyperprolactinemia as a pharmacological side effect of SSRIs is still unknown, despite the widespread use over the last decade. The aim of this review is to explore the relationship between hyperprolactinemia and SSRIs.

[HYPERPROLACTINEMIA AND SELECTIVE SEROTONIN REUPTAKE INHIBITORS. A NARRATIVE REVIEW OF THE LITERATURE]. / Hiperprolactinemia asociada al uso de antidepresivos inhibidores de la recaptación de serotonina. Una revisión narrativa de la literature.

A large number of scientific papers have reported the relationship between the development of hyperprolactinemia and the use of psychotropic drugs, especially the role of antipsychotics which are antidopaminergic drugs. However, less information is known about the role of antidepressants in the development of hyperprolactinemia, specially the selective reuptake inhibitors (SSRIs). The prevalence of hyperprolactinemia as a pharmacological side effect of SSRIs is still unknown, despite the widespread use over the last decade. The aim of this review is to explore the relationship between hyperprolactinemia and SSRIs.

Tamoxifen but not other selective estrogen receptor modulators antagonizes estrogen actions on luteinizing hormone secretion while inducing gonadotropin-releasing hormone self-priming in the rat.

Selective estrogen receptor modulators (SERMs) are compounds which may function as agonists or antagonists depending upon the target tissue. This study compares the actions of different SERMs on luteinizing hormone (LH) secretion, and on gonadotropin-releasing hormone (GnRH) self-priming in the rat. To do this, 4-day cyclic rats were injected twice, on day 2 (metestrus) and day 3 of the estrous cycle, with one of the following SERMs: 0.25 mg ICI 182,780, 3 mg tamoxifen (TX), LY139481-HCl or LY117018-HCl, or 0.5 mg RU58668. Control rats were given subcutaneous injections of 0.2 ml oil. On the morning of day 4 (proestrus in controls), rats from each group were either injected intraperitoneally with pentobarbital (40 mg/kg) for in vivo study or decapitated and their pituitaries collected for incubation (in vitro study). Additionally, pituitaries taken on each day of the estrous cycle from control rats as well as on day 4 from SERM-treated rats were processed for immunohistochemical determination of the estrogen receptor-alpha (ERalpha) gonadotrope. The plasma concentration or accumulation of LH in the medium was determined after 1 h (basal secretion). Thereafter, an intravenous bolus of GnRH (50 ng/0.5 ml/100 g BW) or 10(-8) M GnRH was injected or added to the medium, respectively. After 1 h of GnRH exposure, blood or medium were taken, and another challenge of GnRH was made. At the end of the 3rd h of the experiment, blood or medium samples were taken again and the LH plasma concentration or accumulation in the medium were determined. All SERM treatments reduced uterus weight and decreased basal and stimulated LH secretion. Also, on day 4, rats treated with any SERM other than TX showed vaginal smears infiltrated by leukocytes and a reduction in GnRH self-priming. TX-treated rats exhibited cornified vaginal smears and an estrogenic effect on GnRH self-priming. Moreover, 15-min exposure to two consecutive GnRH (10(-8) M) challenges 1 h apart in incubated pituitaries with estradiol (E(2), 10(-8) M), TX (10(-7) M), E(2) + TX, or medium alone form ovariectomized rats injected for 3 days with estradiol benzoate (25 microg), TX (3 mg), estradiol benzoate + TX, or 0.2 ml oil, respectively, showed that TX increased GnRH self-priming, as did E(2), whereas it reduced the E(2)-sensitizing effect on GnRH-stimulated LH secretion and cancelled the E(2)-dependent GnRH self-priming. All SERMs prevented the physiological nucleocytoplasmic shuttling of ERalpha exhibited during proestrus in control rats, and TX, in addition, induced a significantly larger number of gonadotropes displaying strong cytosolic immunosignals corresponding to ERalpha than the rest of the experimental groups. Overall, data from this study indicated that, in contrast to the general antagonistic effect of the tested SERMs, TX seemed to display both selective agonist and antagonist activity at the gonadotrope level and on GnRH self-priming of LH secretion respectively.

Utilización de la técnica de Ritchie Modificada en el diagnóstico de protozoos / Utilization of the Ritchie Technique modified for the Diagnosis of Protozoa

Se evaluó la técnica de Ritchie para el diagnostico de protozoos y se sustituyó el éter por la nafta se estudiaron 400 muestras de heces fecales y se compararon los resultados obtenidos por el examen directo para protozoos, y técnica de Ritchie con eter de nafta, los resultados mostraron la utilidad de la técnica de Ritchie con nafta al sustituir el éter por nafta en el diagnostico de protozoos y de estos fundamentalmente la Giardia Lamblia con un 18.0porciento de pacientes diagnosticados positivos por un 11.5 porciento a tavez del examen directo. La técnica es simple conocida por los técnicos y lleva pocos recursos, por lo que puede ayudar a un mejor diagnóstico...(AU)

Nuevos aspectos en el tratamiento de la diabetes mellitus tipo 2 / New aspect in the treatment of the diabetes mellitus type 2

La Diabetes Mellitus es una de las enfermedades más frecuentes en todo el mundo y un problema de salud pública debido a sus complicaciones crónicas y agudas. En los Estados Unidos, actualmente se encuentran en el mercado, cinco tipos de agentes orales cada uno con un mecanismo diferente de acción para mejorar el control glucémico en pacientes con diabetes tipo 2. El Estudio Prospectivo sobre Diabetes concluido en el Reino Unido (UKPDS), ha demostrado que la diabetes mellitus tipo 2 es un desorden progresivo que puede ser tratado inicialmente con monoterapia con un agente oral y eventualmente requiere la adición de otros agentes orales, y que en muchos pacientes se requiere la terapia con insulina para lograr los niveles glucémicos deseados. En el UKPDS, el control glucémico mejorado, independientemente del agente utilizado (sulfonilureas, biguanidas o insulina), disminuyó la incidencia de complicaciones microvasculares (retinopatía, neuropatía y nefropatía) y macrovasculares. Esta revisión examina la terapia antihiperglucémica y el mecanismo de acción, eficacia y los beneficios no-glucémicos de los cinco tipos de agentes orales de uso en la actualidad

Métodos de diagnóstico en filariasis

El análisis de 100 muestras de sangre realizado por dos métodos diagnósticos: concentración en filtro de membrana y centrifugación, demostró la existencia de diferencias significativas con respecto a la sensibilidad de ambas técnicas, sobre todo en las bajas concentraciones de microfilarias en sangre. Quedó demostrado que el método de concentración en filtro de membrana es superior al de centrifugación y que la técnica de filtración es más sensible, tanto cualitativa como cuantitativa, que la de centrifugación(AU)