Objetivos: El desarrollo sexual anómalo o diferente (DSD) con cariotipo 46,XY incluye anomalías en el desarrollo gonadal y/o genital (externo y/o interno).
Contenido: Los marcadores bioquímicos útiles para el diagnóstico diferencial de los DSD con cariotipo 46,XY incluyen las hormonas del eje hipotálamo-hipófiso gonadal como son las gonadotropinas LH y FSH (en condiciones basales o tras la estimulación con LHRH), la hormona anti-Mülleriana, la inhibina B, el factor insulinoide tipo 3 y las hormonas esteroideas de origen suprarrenal (se incluirá la hormona hipofisaria ACTH) y testicular (cortisol, aldosterona y sus precursores, testosterona y sus precursores, dihidrotestosterona y estradiol). Las hormonas esteroideas se analizarán en condiciones basales o tras la estimulación con ACTH (hormonas adrenales) y/o con HCG (hormonas testiculares). Los patrones de variación de las distintas hormonas dependerán de la causa y la edad de cada paciente. El diagnóstico molecular debe incluir el análisis de un gen candidato, un panel de genes o el análisis de un exoma completo.
Perspectivas: El diagnóstico diferencial de los DSD con cariotipos 46,XX ó 46,XY debe ser multidisciplinar, incluyendo los antecedentes clínicos, morfológicos, de imagen, bioquímicos y genéticos. Se han elaborado numerosos algoritmos diagnósticos.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10197789 | PMC |
http://dx.doi.org/10.1515/almed-2020-0120 | DOI Listing |
Conserv Biol
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Department of Integrative Biology, Oklahoma State University, Stillwater, Oklahoma, USA.
Habitat loss and fragmentation have independent impacts on biodiversity; thus, field studies are needed to distinguish their impacts. Moreover, species with different locomotion rates respond differently to fragmentation, complicating direct comparisons of the effects of habitat loss and fragmentation across differing taxa and landscapes. To overcome these challenges, we combined mechanistic mathematical modeling and laboratory experiments to compare how species with different locomotion rates were affected by low (∼80% intact) and high (∼30% intact) levels of habitat loss.
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Servicio de Cirugía de Hígado, Vía Biliar y Páncreas, Hospital Italiano de San Justo Agustín Rocca, Buenos Aires, Argentina.
Hemorrhagic cholecystitis, a rare complication of acute cholecystitis, poses diagnostic challenges due to its varied clinical presentation and relative infrequency. This case involves a 59-year-old male with untreated diabetes and obesity, who presented with nonspecific abdominal pain. Initial results were inconclusive, leading to a delayed diagnosis.
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Fundación para la Investigación en Neuro Epidemiología (FINEP), Junín, Buenos Aires, Argentina.
The "acute undifferentiated febrile illness" (AUFI) encompasses a range of diseases characterized by the presence of fever, often prompting consultations in emergency services. During epidemics like COVID-19 or dengue, a surge in consultations occurs, resulting in long wait times for patients. Errors in first diagnosis can result in severe consequences.
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March 2024
Departamento de Endocrinología, Pontificia Universidad Católica de Chile, Chile.
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Unidad de Agudos de Psicogeriatría, Hospital Sagrat Cor, Barcelona, España.
We report the case of an older female patient suffering from a subacute qualitative and quantitative alteration in the state of consciousness secondary to a major depressive disorder with catatonic features. We discuss and review the clinical presentation, diagnosis, etiology, and treatment of catatonia in older adults from the internist's point of view.
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