COVID-19 and Fontan: bioethical analysis derived from the need for hospital reconversion.

BACKGROUND: Among congenital heart diseases, those with univentricular physiology are the most severe with the lowest survival. Fontan surgery (FS) is the procedure of choice, as it bypasses the flow from the caval veins to the pulmonary circulation but requires close monitoring for late complications. The SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) pandemic caused nations to prioritize the availability of human and material health resources to benefit those infected. This study aimed to evaluate the clinical consequences of hospital reconversion due to the COVID-19 pandemic in a univentricular heart clinic for patients with FS from the bioethical perspective. METHODS: We conducted an analytical cross-sectional study in a captive cohort of patients with FS treated in a tertiary hospital with conversion to COVID-19 patient care. The consequences of discontinuation of follow-up were recorded. Qualitative variables were expressed as frequencies and percentages, and quantitative variables as medians and interquartile ranges (p25-p75). Comparison between the two groups was performed with the χ2 test. RESULTS: We included 51 patients with a median age of 13 years and a follow-up of 5 years. The male: female ratio was 0.88:1.12, and 41% (21) presented failures. More than 90% of the patients presented needs for medications and imaging studies. The two patients cared for in palliative care discontinued their care. CONCLUSIONS: Continuity of care must be guaranteed for all patients who require it, so health policies are needed to ensure compliance with vulnerable groups.

INTRODUCCIÓN: Entre las cardiopatías congénitas, las de fisiología univentricular son el espectro más grave y con menor supervivencia. La cirugía de Fontan es el procedimiento de elección, ya que deriva el flujo de las venas cava a la circulación pulmonar, pero requiere un seguimiento estrecho de las complicaciones tardías. La pandemia por el SARS-CoV-2 (coronavirus 2 causante del síndrome respiratorio agudo grave) condicionó que las naciones priorizaran la disposición de los recursos humanos y materiales en salud en beneficio de los infectados. El objetivo de este estudio fue evaluar las consecuencias clínicas de la reconversión hospitalaria por la pandemia de COVID-19 en una clínica de corazón univentricular de los pacientes con cirugía de Fontan desde el punto de vista bioético. MÉTODOS: Se llevó a cabo un estudio transversal analítico en una cohorte cautiva de pacientes con cirugía de Fontan atendidos en un hospital de tercer nivel con reconversión para atención de pacientes por COVID-19. Se registraron las consecuencias derivadas de la interrupción del seguimiento. Las variables cualitativas se expresaron en frecuencias y porcentajes, y las cuantitativas en medianas y rangos intercuartílicos (p25-p75). La comparación entre ambos grupos se realizó con la prueba de χ2. RESULTADOS: Se incluyeron 51 pacientes, con una mediana de edad de 13 años y seguimiento de 5 años. La relación de sexo masculino: femenino fue de 0.88:1.12, y el 41% (21) presentaron fallas. Más del 90% de los pacientes presentaron necesidades en el suministro de medicamentos y estudios de imagen. Los dos pacientes atendidos en cuidados paliativos suspendieron su atención. CONCLUSIONES: La continuidad asistencial debe estar garantizada para todos los enfermos que la requieran, por lo que se necesitan políticas de salud para que esta continuidad se cumpla en los grupos vulnerables.

Distribution of the CAG Triplet Repeat in ATXN1, ATXN3, and CACNA1A Loci in Peruvian Population.

Spinocerebellar ataxia subtypes 1, 3, and 6 (SCA1, MJD/SCA3, and SCA6) are among the most prevalent autosomal dominant cerebellar ataxias worldwide, but their relative frequencies in Peru are low. Frequency of large normal (LN) alleles at spinocerebellar ataxia-causative genes has been proposed to be associated with disease prevalence. To investigate the allelic distribution of the CAG repeat in ATXN1, ATXN3, and CACNA1A genes in a Peruvian mestizo population and examine their association with the relative frequency of SCA1, MJD/SCA3, and SCA6 across populations. We genotyped 213 healthy mestizo individuals from Northern Lima, Peru, for ATXN1, ATXN3, and CACNA1A using polymerase chain reaction (PCR) and polyacrylamide gel electrophoresis (PAGE). We compared the frequency of LN alleles and relative disease frequency between populations. We also tested 40 samples for CAT repeat interruptions within the CAG tract of ATXN1. We found no association between disease frequency and population frequency of LN alleles at ATXN1 and ATXN3. All 40 ATXN1 samples tested for CAT interruptions were positive. Frequency of LN alleles at CACNA1A correlates with SCA6 frequency across several populations, but this effect was largely driven by data from a single population. Low frequency of SCA1 and MJD/SCA3 in Peru is not explained by frequency of LN alleles at ATXN1 and ATXN3, respectively. The observed correlation between CACNA1A LN alleles and SCA6 frequency requires further assessment.

An assessment of drinking water contamination with Helicobacter pylori in Lima, Peru.

BACKGROUND: Helicobacter pylori is a gut bacterium that is the primary cause of gastric cancer. H. pylori infection has been consistently associated with lack of access to sanitation and clean drinking water. In this study, we conducted time-series sampling of drinking water in Lima, Peru, to examine trends of H. pylori contamination and other water characteristics. MATERIALS AND METHODS: Drinking water samples were collected from a single faucet in Lima's Lince district 5 days per week from June 2015 to May 2016, and pH, temperature, free available chlorine, and conductivity were measured. Quantities of H. pylori in all water samples were measured using quantitative polymerase chain reaction. Relationships between the presence/absence and quantity of H. pylori and water characteristics in the 2015-2016 period were examined using regression methods accounting for the time-series design. RESULTS: Forty-nine of 241 (20.3%) of drinking water samples were contaminated with H. pylori. Statistical analyses identified no associations between sampling date and the likelihood of contamination with H. pylori. Statistically significant relationships were found between lower temperatures and a lower likelihood of the presence of H. pylori (P < .05), as well as between higher pH and higher quantities of H. pylori (P < .05). CONCLUSIONS: This study has provided evidence of the presence of H. pylori DNA in the drinking water of a single drinking water faucet in the Lince district of Lima. However, no seasonal trends were observed. Further studies are needed to determine the presence of H. pylori in other drinking water sources in other districts in Lima, as well as to determine the viability of H. pylori in these water sources. Such studies would potentially allow for better understanding and estimates of the risk of infection due to exposure to H. pylori in drinking water.

Antileishmanial, antitrypanosomal, and cytotoxic screening of ethnopharmacologically selected Peruvian plants.

Extracts (34) from eight plant species of the Peruvian Amazonia currently used in traditional Peruvian medicine, mostly as antileishmanial remedies and also as painkiller, antiseptic, antipyretic, anti-inflamatory, antiflu, astringent, diuretic, antipoison, anticancerous, antiparasitic, insecticidal, or healing agents, have been tested for their antileishmanial, antitrypanosomal, and cytotoxic activity. Plant species were selected based on interviews conducted with residents of rural areas. The different plant parts were dried, powdered, and extracted by maceration with different solvents (hexane, chloroform, and 70% ethanol-water). These extracts were tested on promastigote forms of Leishmania infantum strain PB75, epimastigote forms of Trypanosoma cruzi strain Y, and the mammalian CHO cell line. Parasite viability and nonspecific cytotoxicity were analyzed by a modified MTT colorimetric assay method. The isolation and identification of pure compounds from selected extracts were performed by column chromatography, gas chromatography mass spectrometry (GC-MS; mixtures), spectroscopic techniques [MS, infrared (IR), ultraviolet (UV)], and mono and two-dimensional (1)H and (13)C nuclear magnetic resonance (NMR; COSY, HSQC, NOESY) experiments. Chondodendron tomentosum bark and Cedrela odorata were the most active extracts against Leishmania, while C. odorata and Aristoloquia pilosa were the most active against Trypanosoma, followed by Tabebuia serratifolia, Tradescantia zebrina, and Zamia ulei. Six compounds and two mixtures were isolated from Z. ulei [cycasin (1)], T. serratifolia {mixtures 1-2, and naphthoquinones 2-acetyl-4H,9H-naphtho[2,3-b]furan-4,9-dione (2) and 2-(1-hydroxyethyl)-4H,9H-naphtho[2,3-b]furan-4,9-dione (3)}, and C. tomentosum [chondrocurine (4); (S,S')-12-O-methyl(+)-curine (5); and cycleanine (6)]. Four compounds and the two mixtures exhibited significant activity.