RESUMO
Rhyacoglanis pulcher is a rare Neotropical rheophilic bumblebee catfish known only from the type locality in the Cis-Andean Amazon region, Ecuador, and the type-species of the genus. So far, the three syntypes collected in 1880 were the only specimens unambiguously associated to the name R. pulcher available in scientific collections. Recently, a specimen was discovered in a fast-flowing stretch of the Villano river, a tributary of the Curaray river, Napo river basin, Ecuador, representing a new record after nearly 140 years. Here, we present this new record, identified by morphology, provide the DNA barcode sequence of the specimen, and propose why the species of Rhyacoglanis are scarce in zoological collections. Additionally, we discuss the intraspecific variation in the color pattern observed in R. pulcher.
Assuntos
Peixes-Gato , Animais , Peixes-Gato/genética , Equador , RiosRESUMO
INTRODUCCIÓN: La enfermedad cerebrovascular en los adultos mayores tiene implicaciones clínicas, sociales y económicas que pueden comprometer la funcionalidad y la calidad de vida. Es importante determinar las complicaciones que puede presentar el paciente geriátrico con enfermedad cerebrovascular durante los días de estancia hospitalaria. OBJETIVO: Determinar las características neuro-geriátricas asociadas a las complicaciones agudas no neurológicas y los días de hospitalización de los pacientes adultos mayores con enfermedad cerebrovascular. MATERIALES Y MÉTODOS: Estudio descriptivo prospectivo. Población de 120 y muestra de 73 pacientes mayores de 65 años con enfermedad cerebro vascular de la Unidad de Neurología del Hospital Carlos Andrade Marín que inició en agosto de 2020 y culminó en enero 2021. Se excluyó a pacientes que no cumplieron el criterio mencionado, con dependencia funcional total previa, patologías psiquiátricas previas, o personas que no aceptaron ser parte del estudio. Se efectuó el seguimiento de los pacientes desde el ingreso hasta el alta hospitalaria, para identificar complicaciones agudas no neurológicas y días de hospitalización. Se determinó las características neuro-geriátricas mediante las escalas de Barthel, Gijón, Charlson, Norton, Glasgow y NIHSS. Se obtuvo riesgo relativo e intervalos de confianza, considerando significativo un valor p<0,05. RESULTADOS: La edad media fue de 77 (±8,5) años. Las complicaciones fueron infección de tracto urinario (22,0%), neumonía (20,0%), desequilibrio hidroelectrolítico (19,0%), disfagia (13,0%) y úlceras por presión (9,0%). Las complicaciones que se presentaron significativamente ante una estancia hospitalaria prolongada comparada con quienes no las presentaron fueron la Neumonía (Media 5,81 (1,47 a 10,16) con IC 95%) y la infección del tracto urinario (Media 4,95 (1,52 a 8,38) con IC 95%). Según las características neuro-geriátricas y las complicaciones, encontramos diferencia estadísticamente significativa solo con en el grupo de riesgo bajo, según la escala de Norton RR 0,744 con IC 95% (0,584 - 0,949). CONCLUSIONES: Es importante realizar la valoración geriátrica integral al paciente neurológico tanto al ingreso como al egreso hospitalario, ya que permite detectar complicaciones que pueden pasar desapercibidas y prolongar la estancia hospitalaria.
INTRODUCTION: Cerebrovascular disease in older adults has clinical, social, and economic implications that can compromise functionality and quality of life. It is important to determine the complications that the geriatric patient with cerebrovascular disease may present during hospital days. OBJECTIVE: To determine the neuro-geriatric characteristics associated with acute non-neurological complications and hospital days in older adult patients with cerebrovascular disease. MATERIALS AND METHODS: Prospective descriptive study. Population of 120 and sample of 73 patients older than 65 years with cerebrovascular disease from the Neurology Unit of the Carlos Andrade Marín Hospital that began in August 2020 and culminated in January 2021. Patients who did not meet the aforementioned criteria, with previous total functional dependence, previous psychiatric pathologies, or people who did not agree to be part of the study were excluded. Patients were followed up from admission to hospital discharge to identify acute non-neurological complications and days of hospitalization. Neuro-geriatric characteristics were determined using the Barthel, Gijon, Charlson, Norton, Glasgow and NIHSS scales. Relative risk and confidence intervals were obtained, considering a p-value <0.05 as significant. RESULTS: Mean age was 77 (±8.5) years. Complications were urinary tract infection (22.0%), pneumonia (20.0%), water and electrolyte imbalance (19.0%), dysphagia (13.0%) and pressure ulcers (9.0%). Complications that occurred significantly in the face of a prolonged hospital stay compared to those who did not present were Pneumonia (Mean 5.81 (1.47 to 10.16) with 95% CI) and urinary tract infection (Mean 4.95 (1.52 to 8.38) with 95% CI). According to neuro-geriatric characteristics and complications, we found statistically significant difference only with in the low risk group, according to the Norton scale RR 0.744 with 95% CI (0.584 - 0.949). CONCLUSIONS: It is important to perform comprehensive geriatric assessment of the neurological patient both on admission and hospital discharge, as it allows the detection of complications that may go unnoticed and prolong hospital stay.
Assuntos
Humanos , Masculino , Feminino , Idoso , Idoso de 80 Anos ou mais , Transtornos Cerebrovasculares , Saúde do Idoso , Geriatria , Serviços de Saúde para Idosos , Hospitalização , Neurologia , Pneumonia , Qualidade de Vida , Sistema Urinário , Desequilíbrio Hidroeletrolítico , Idoso , Transtornos de Deglutição , Comorbidade , Úlcera por Pressão , EquadorRESUMO
Gerstmann-Sträussler-Scheinker syndrome (GSS) is a dominantly inherited disorder belonging to the group of transmissible human spongiform encephalopathies or prion diseases. Several families affected by GSS with patients carrying mutations in the prion protein gene have been described worldwide. We report clinical, genealogical, neuropathology and molecular study results from two members of the first Argentine kindred affected by GSS. Both family members presented a frontotemporal-like syndrome, one with and the other without ataxia, with different lesions on neuropathology. A Pro to Leu point mutation at codon 102 (P102L) of the prion protein gene was detected in one of the subjects studied. The pathogenic basis of phenotypic variability observed in this family remains unclear, but resembles that observed in other P102L GSS patients from the same family.
Assuntos
Doença de Gerstmann-Straussler-Scheinker/diagnóstico , Doença de Gerstmann-Straussler-Scheinker/genética , Príons/genética , Adulto , Encéfalo/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Mutação , Linhagem , Fenótipo , Proteínas PriônicasRESUMO
BACKGROUND: Epidemiological data on Creutzfeldt-Jakob disease (CJD) from Latin America are limited. We present a comprehensive epidemiological survey on CJD patients in Argentina based on systematic surveillance between 1997 and 2008. METHODS: A CJD Surveillance Referral Center (SRC) was established in Argentina in 1997; previously a Neuropathology Referral Center was used from 1983 to 1996. All suspected cases referred to the SRC were classified using established criteria on the basis of information derived from the following: clinical data form, EEG, MRI (both for central review), cerebrospinal fluid (CSF) for protein 14-3-3 Western blot (WB), autopsy or biopsy material for neuropathology, prion protein (PrP) immunohistochemistry and PrP WB, as well as blood for DNA studies (when brain tissue was not available). RESULTS: Of the 517 patients referred to the SRC between 1997 and 2008, 211 (40.8%) had CJD or other transmissible spongiform encephalopathies (TSEs) (definite or probable). Possible cases totaled 14.5%, while cases with no WHO criteria accounted for 16.4%. Non-CJD cases excluded by biopsy/autopsy or during follow-up corresponded to 28.2% of the 517 referrals. Main differential diagnoses included neurodegenerative diseases such as Alzheimer's disease, frontotemporal dementia, vascular, metabolic or viral encephalopathy, and Hashimoto's disease. Five percent of referred patients ultimately recovered. Eighty-three percent of TSE cases were sporadic CJD; 17% were genetic, mainly E200K (15.6%); the remaining 1.4% included an octarepeat insertion and two Gerstmann-Sträussler-Scheinker cases (P102L). Seventy-four of 100 definite cases had frozen tissue available for molecular subtyping (PrP(Sc)/codon 129). CSF protein 14-3-3 WB sensitivity was 72.3% and specificity was 92.1%. Clinical diagnostic criteria for probable CJD when compared to definite diagnosis by neuropathology showed 71.3% sensitivity, 86.2% specificity, 94.4% positive predictive value and 48% negative predictive value. Country incidence increased over time and reached 0.85 cases per million in 2008, with the highest rate detected in the city of Buenos Aires (1.8). Districts with 6% of the total population have never reported suspected cases. CONCLUSION: In spite of an increase in incidence observed over time, the difference between Buenos Aires city, where the incidence is comparable to that of smaller European countries with higher population density, and the incidence observed in the rest of the country suggests underreporting in nonmetropolitan areas, probably due to a lack of access to specialized medical facilities. CSF WB sensitivity results for protein 14-3-3 were probably linked to the fact that testing was not routinely repeated during the course of the disease, when earlier test results had been negative. The spectrum of molecular CJD subtypes observed did not differ from other countries in Europe. No iatrogenic or variant CJD cases were identified. The sensitivity and negative predictive value of clinical diagnostic criteria for probable CJD (which includes EEG and/or CSF protein 14-3-3 levels) may have been resulted from confirmed cases not meeting probable criteria before autopsy, due to a lack of ancillary tests such as EEG and/or CSF 14-3-3 WB, or because negative tests were not repeated during follow-up.