Unraveling the immune and metabolic changes associated with metritis in dairy cows.

The objective was to unravel the peripartum immune and metabolic changes associated with metritis in Holstein cows. Holstein cows (n = 128) had blood collected at -14, 0, 3, and 7 d relative to parturition (DRP). Flow cytometry was used to evaluate blood leukocyte counts, proportions, and activation. Total cells, live cells, single cells, monocytes (CD172α+/CD14+), polymorphonuclears (CD172α+/CD14-/SSChigh), B-cells (CD21+/MHCII+), CD4+ T-cells (CD4+), CD8+ T-cells (CD8+), and γδ T-cells (γδTCR+) were evaluated. Both CD62L and CD11b were used as markers of cell activation. Major histocompatibility complex class II was used as a marker of antigen presentation in monocytes. A Milliplex Bovine Cytokine/Chemokine 08-plex kit was used to evaluate plasma concentrations of IFN-γ, IL-1α, IL-1ß, IL-4, IL-6, IL-8, IL-10, and tumor necrosis factor-α. The body weight (BW) change prepartum was calculated as the difference between calving BW and prepartum BW divided by the number of days between measurements. Plasma fatty acids (FA) were measured at -14 and 0 DRP using untargeted gas chromatography with time-of-flight mass spectrometry. Data were analyzed by ANOVA for repeated measures. Cows that developed metritis (n = 57) had greater prepartum BW, prepartum BW loss, and greater FA concentrations at calving. Plasma FA at calving was positively correlated with IL-1ß. Cows that developed metritis had persistent systemic inflammation, which was demonstrated by greater B-cell activation, greater pro-inflammatory cytokine concentrations, and greater cell damage pre- and postpartum. Postpartum, we observed greater polymorphonuclear cell activation and extravasation but lesser monocytes and CD4+ T-cells activation and extravasation, which suggests postpartum immune tolerance. Greater prepartum adiposity in cows that developed metritis may lead to systemic inflammation pre- and postpartum and immune tolerance postpartum, which may lead to failure to prevent bacterial infection, and development of puerperal metritis.

Responding to a school SARS-CoV-2 outbreak: Insights and policy implications emerging from the pandemic.

Background: The SARS-CoV-2 pandemic has affected also the school environment. Prolonged closures and the weakness of available data prevent a definitive answer to the question of school transmission. We report our experience of responding to COVID-19 cases in the school setting, presenting a case study of the management of an outbreak in a large school. Methods: The LHA/ASL Roma 1 has organized the School Units with a structure firmly rooted in the territory. At the local level, the District Unit mainly manages the relationship with schools, while the Hygiene and Public Health Service of the Prevention Department holds a coordinating and facilitating role. The HPHS carries out contact tracing activities facilitated by the schools, through the figure of the COVID-19 Contact Person, who is specifically trained to manage the preliminary stages of the reports. Results: Following several reports of COVID-19 suspect cases from two schools and, after a complex phase of contact tracing, it was possible to identify the major transmission chains. Furthermore, we performed a population-based screening on the entire school. Beyond the known transmission chains, for which quarantine was already in place, only five additional cases emerged, all asymptomatic, out of 1,231 swabs tested with RT-PCR. Conclusions: Our experience confirms that an active interaction between the school and the School Unit made it possible to quickly control a potentially dangerous outbreak. The large-scale screening test demonstrated the substantial absence of collateral transmission chains. Effective contact tracing allowed to set forth a successful response. Our model of intervention can be used to support public health protocols regarding school outbreaks.

Implante de marcapasos sin cables. Caso Clínico / Leadless pacemaker implantation. Case report

We report 67-year-old woman with a sinus node dysfunction and diffuse conduction system disease, with a history of recurrent paroxysmal atrial fibrillation. She was admitted to the Hospital due to palpitations, dizziness, and vertigo, attributing the symptoms to the rhythm disorder described, for which the implantation of a pacemaker was indicated. With a history of tracheal cancer treated with radio and chemotherapy, and chronic steroid therapy for rheumatoid arthritis, she had an important limitation in vascular access for a conventional pacemaker, so, added to a high risk of infection, a decision was made to implant a leadless pacemaker. We discuss the electrocardiographic and clinical manifestations of sinus node disease, its relationship with oncological treatment and the indication for a permanent pacemaker, highlighting the characteristics of this new modality of artificial cardiac stimulation, for a special type of patients.

Impacto de la alteración de la continuidad asistencial en los pacientes con diabetes tipo 2 durante la pandemia de COVID-19 / Impact of the alteration of the continuity of care in diabetes type 2 patients during the COVID-19 pandemic

Objetivo: Valorar la repercusión de la alteración de la continuidad asistencial en pacientes con diabetes mellitus tipo 2 (DM2) durante la pandemia de COVID-19. Material y método: Estudio de seguimiento entre los años 2018 y 2020 de los pacientes con DM2 de un centro de salud. Las actividades asistenciales y preventivas realizadas para su seguimiento fueron comparadas con pruebas estadísticas adecuadas al tipo y distribución de cada variable para un nivel de significación p≤0,05. Resultados: La muestra inicial fue de 587 pacientes con hemoglobina glicosilada (A1c) en 2018 (54% varones), con una edad de 66±11 años en un rango de 29-91 años. En 2020 disminuyeron todos los indicadores de atención: se determinó A1c al 68% de los pacientes (382/558 tras 29 fallecimientos); el 59% permanecía con buen control, el 17% con mal control, el 10% mejoró y el 14% empeoró (p<0,001). Empeoraron menos los pacientes que tenían realizados ECG y retinografía en 2018, aunque no en 2020, que aquellos que no los tenían en 2018, pero sí en 2020 (16 vs. 25%; p<0,001 y 13 vs. 42%; p=0,002). Quienes disminuyeron sus visitas al médico de familia y enfermera presentaron menor empeoramiento que los que las aumentaron (14 vs. 26%; p<0,001 y 17 vs. 23%; p<0,001). Conclusiones: La desatención impidió el control del 32% de los pacientes. El peor control en 2020 fue menor en quienes estaban controlados en 2018, y en quienes disminuyeron su asistencia al centro de salud en 2020. Probablemente una adecuada formación pre-pandémica en autocuidados ha llevado al empoderamiento del paciente durante periodo pandémico (AU)

Aim: To assess the impact of the alteration of the continuity of care in patients with type 2 diabetes during the COVID-19 pandemic. Material and method: Follow-up study with 587 primary care patients with DM2, and control according to the redGDPS-2018 criteria in 2018 and 2020. Activities carried out and control status of patients were compared using statistical tests appropriate to type and distribution of each variable, for a significance level P≤.05. Results: Sample was made up of 587 patients with glycosylated hemoglobin (A1c) in 2018 (54% men), age of 66±11, in range of 29-91 years. All the care indicators decreased in 2020: A1c was determined in 68% of patients (382/558 after 29 deaths); 59% remained with good control, 17% with poor control, 10% improved and 14% worsened (P<.001). Those who had ECG and retinography performed in 2018 and not in 2020 show a lower degree of worsening than those who did not have them done in 2018 but they did in 2020 (16% vs 25%, P<.001 and 13% vs 42%, P=.002). Those who decrease their visits to family doctor and nurse show less deterioration than those who increase them (14% vs 26%; P<.001 and 17% vs 23%; P<.001). Conclusions: Inattention impeded control of 32% of the patients. Poor control in 2020 was lower in those who were controlled in 2018, and who decreased their attendance at the health center in 2020. Possibly adequate pre-pandemic training in self-care has led to the empowerment of the patient during a pandemic period (AU)

Evaluation of water footprint of urban renewal projects. Case study in Seville, Andalusia.

This publication presents a methodology for the evaluation of the water footprint of urban renewal projects. The indirect water footprint is obtained by adding together the embodied or virtual water of the materials incorporated in the 12-month project, while the direct footprint is mainly due to the green areas and rainwater collection system over its 40-year life span. The methodology, originally defined for the agricultural sector, is adapted to an urban system that includes gardens and sustainable urban drainage systems. In an innovative way, the present work analyses the amortisation of the indirect water footprint of the construction products by improvements in the city water cycle. The project involves street renewal with water-sensitive criteria, with five green areas, and road and pavement construction. The methodology identifies changes in garden designs, soil drainage, and rainwater-collecting systems in terms of blue, green, and grey water footprints. Five scenarios of a project in Seville, Spain are studied. The indirect water footprint of the project is 2.6 times higher than that in a standard project, but, due to annual savings of 65% in its direct water footprint, the breakeven point is reached in the 10th year.

[Impact of the alteration of the continuity of care in diabetes type 2 patients during the COVID-19 pandemic]. / Impacto de la alteración de la continuidad asistencial en los pacientes con diabetes tipo 2 durante la pandemia de COVID-19.

AIM: To assess the impact of the alteration of the continuity of care in patients with type 2 diabetes during the COVID-19 pandemic. MATERIAL AND METHOD: Follow-up study with 587 primary care patients with DM2, and control according to the redGDPS-2018 criteria in 2018 and 2020. Activities carried out and control status of patients were compared using statistical tests appropriate to type and distribution of each variable, for a significance level P≤.05. RESULTS: Sample was made up of 587 patients with glycosylated hemoglobin (A1c) in 2018 (54% men), age of 66±11, in range of 29-91 years. All the care indicators decreased in 2020: A1c was determined in 68% of patients (382/558 after 29 deaths); 59% remained with good control, 17% with poor control, 10% improved and 14% worsened (P<.001). Those who had ECG and retinography performed in 2018 and not in 2020 show a lower degree of worsening than those who did not have them done in 2018 but they did in 2020 (16% vs 25%, P<.001 and 13% vs 42%, P=.002). Those who decrease their visits to family doctor and nurse show less deterioration than those who increase them (14% vs 26%; P<.001 and 17% vs 23%; P<.001). CONCLUSIONS: Inattention impeded control of 32% of the patients. Poor control in 2020 was lower in those who were controlled in 2018, and who decreased their attendance at the health center in 2020. Possibly adequate pre-pandemic training in self-care has led to the empowerment of the patient during a pandemic period.

Flow cytometry panels for immunophenotyping dairy cattle peripheral blood leukocytes.

Many aspects of the bovine immune system remain poorly characterized, which poses an obstacle to improving dairy cow health. Herein, we describe two flow cytometry panels that included antibodies against CD8α, CD4, TCR-δ, CD172α, CD14, MHCII, CD21, CD62L, and CD11b. These panels were used to characterize the phenotype of leukocyte subpopulations from the peripheral blood of 30-day old Holstein calves and Holstein cows at 260 d of gestation and calving. No leukocyte subset differences were found between the pre- and post-partum cows. However, calf leukocytes presented a higher proportion of CD3+ lymphocytes, γδ T-cells, CD8+ γδ T-cells, and monocytes when compared with mature cows. Conversely, cow lymphocytes had a higher proportion of CD4+ and CD8+ T-cells, and B-cells than calf lymphocytes. The proportion of CD4+ T-cells and B-cells expressing CD62L was greater in calves than in cows, while cow B-cells expressed greater levels of CD11b than calf B-cells. In contrast, calf polymorphonuclear cells (PMN) and monocytes expressed greater levels of CD11b compared to cows. Moreover, calf monocytes expressed higher levels of MHCII compared with those of cows. Collectively, our data provides a resource to better understand the bovine immune system as well as immune-related diseases that affect dairy cattle.

[Leadless pacemaker implantation. Case report]. / Implante de marcapasos sin cables. Caso Clínico.

We report 67-year-old woman with a sinus node dysfunction and diffuse conduction system disease, with a history of recurrent paroxysmal atrial fibrillation. She was admitted to the Hospital due to palpitations, dizziness, and vertigo, attributing the symptoms to the rhythm disorder described, for which the implantation of a pacemaker was indicated. With a history of tracheal cancer treated with radio and chemotherapy, and chronic steroid therapy for rheumatoid arthritis, she had an important limitation in vascular access for a conventional pacemaker, so, added to a high risk of infection, a decision was made to implant a leadless pacemaker. We discuss the electrocardiographic and clinical manifestations of sinus node disease, its relationship with oncological treatment and the indication for a permanent pacemaker, highlighting the characteristics of this new modality of artificial cardiac stimulation, for a special type of patients.

[Effectiveness of the TG/HDL-C ratio to improve GLP-1 prescription in patients with type 2 diabetes in primary care]. / Efectividad de la ratio TG/c-HDL en la mejora de la prescripción de GLP-1 en pacientes con diabetes tipo 2 en atención primaria.

AIMS: Check the usefulness of ratio TG/HDL-C≥2.5 to improve the effectiveness of GLP-1 prescribing in patients with type 2 diabetes (DM2) in primary care, and determine whether any patient profile would higher benefit. DESIGN: Descriptive cross-sectional study. LOCATION: Barranco Grande Health Center, Tenerife. PARTICIPANTS: Random selection of patients with DM2 attended by 12 family doctors and 12 nurses. MAIN MEASUREMENTS: Poor control according to the current criteria was compared to poor control according to the proposed rule. To determine who would benefit, the sociodemographic, clinical, therapeutic and follow-up characteristics were analyzed. Descriptive, bivariate and multivariate statistical analysis was performed. RESULTS: No predominant characteristics were found in the patients who would be prescribed GLP-1 according to the proposed rule, but those that reached a significance P<.20 were included as potential explanatory factors in a multivariate binary logistic regression model. The adjustment of the model retained the factors of therapeutic non-compliance (OR 3.40 [1.58-5.02]; P=.003), evolution of DM2 less than 15 years (OR 2.74 [1.10-4.89]; P=.031), number of prescribed anti-diabetes drugs (OR 2.30 [1.88-2.81]; P<.001) and age under 65 years (OR 1.67 [1.08-2.58]; P=.021). CONCLUSIONS: The use of the rule that we propose for the prescription of GLP-1 (2018 recommendations of the GDPS network combined with the TG/HDL-C ratio≥2.5 or BMI≥30kg/m2), instead of the current criterion adopted by the National Health System, would allow to broaden the spectrum of application of the drug in patients with poor control of their DM2.

Peripheral serotonin regulates glucose and insulin metabolism in Holstein dairy calves.

Peripheral serotonin regulates energy metabolism in several mammalian species, however, the potential contribution of serotonergic mechanisms as metabolic and endocrine regulators in growing dairy calves remain unexplored. Objectives were to characterize the role of serotonin in glucose and insulin metabolism in dairy calves with increased serotonin bioavailability. Milk replacer was supplemented with saline, 5-hydroxytryptophan (90 mg/d), or fluoxetine (40 mg/d) for 10-d (n = 8/treatment). Blood was collected daily during supplementation and on days 2, 7, and 14 during withdrawal. Calves were euthanized after 10-d supplementation or 14-d withdrawal periods to harvest liver and pancreas tissue. 5-hydroxytryptophan increased circulating insulin concentrations during the supplementation period, whereas both treatments increased circulating glucose concentration during the withdrawal period. The liver and pancreas of preweaned calves express serotonin factors (ie, TPH1, SERT, and cell surface receptors), indicating their ability to synthesize, uptake, and respond to serotonin. Supplementation of 5-hydroxytryptophan increased hepatic and pancreatic serotonin concentrations. After the withdrawal period, fluoxetine cleared from the pancreas but not liver tissue. Supplementation of 5-hydroxytryptophan upregulated hepatic mRNA expression of serotonin receptors (ie, 5-HTR1B, -1D, -2A, and -2B), and downregulated pancreatic 5-HTR1F mRNA and insulin-related proteins (ie, Akt and pAkt). Fluoxetine-supplemented calves had fewer pancreatic islets per microscopic field with reduced insulin intensity, whereas 5-hydroxytryptophan supplemented calves had increased islet number and area with greater insulin and serotonin and less glucagon intensities. After the 14-d withdrawal of 5-hydroxytryptophan, hepatic mRNA expression of glycolytic and gluconeogenic enzymes were simultaneously downregulated. Improving serotonin bioavailability could serve as a potent regulator of endocrine and metabolic processes in dairy calves.

Increasing serotonin bioavailability alters gene expression in peripheral leukocytes and lymphoid tissues of dairy calves.

Dairy calves are born with a naïve immune system, making the pre-weaning phase a critical window for immune development. In the U.S., 40-60% of dairy farms feed milk replacer to pre-weaned calves, which are devoid of bioactive factors with immunological roles. Serotonin is a bioactive factor with immunoregulatory properties naturally produced by the calf and present in milk. Human and rodent immune cells express the serotonin machinery, but little is known about the role of serotonin in the bovine immune system. Supplementing milk replacer with 5-hydroxytryptophan (serotonin precursor) or fluoxetine (reuptake inhibitor) increases serotonin bioavailability. We hypothesized that increased serotonin bioavailability promotes serotonergic signaling and modulates the expression of immune related genes in peripheral leukocytes and immune-related tissues of dairy calves. The present experiment targeted candidate genes involved in serotonin production, metabolism, transport, signaling and immune regulation. We established that bovine peripheral leukocytes express all known serotonin receptors, and can synthesize, uptake and degrade serotonin due to the expression of serotonin metabolism-related genes. Indeed, we showed that increasing serotonin bioavailability alters gene expression of serotonin receptors and immune-related genes. Further research will determine whether manipulation of the serotonin pathway could be a feasible approach to bolster dairy calves' immune system.

Pre- and postnatal heat stress abatement affects dairy calf thermoregulation and performance.

Prenatal heat stress during late gestation exerts long-term effects on growth and productivity of the dairy calf. Further, direct exposure to heat stress during the preweaning period impairs calf thermoregulation and performance. We examined the effects of heat stress abatement during the prenatal period, postnatal period, or both on calf performance. We hypothesized that calves exposed to pre- and postnatal heat stress abatement would perform most optimally in terms of thermoregulation, growth, and health responses when compared with calves that are heat-stressed at any time in the pre- or postnatal periods. Holstein calves born to heat-stressed (HT) or cooled (CL) dams during late gestation (44 ± 5 d; prenatal HT or CL) were exposed to heat stress or cooling postnatally for 56 d (postnatal HT or CL), resulting in 4 treatments: HT-HT, HT-CL, CL-HT, and CL-CL; n = 12/treatment. Calves were administered 4 L of pooled colostrum and after 2 d of age allotted 10 L/d milk replacer and up to 3 kg/d concentrate in automatic feeder group pens (n = 6/pen). Postnatal cooling was achieved by 2 fans (average wind speed 2 m/s). Thermoregulatory responses (respiration rate and heart rate; rectal, body, and skin temperature), feed intake, growth parameters including average daily gain and medication events were recorded, and blood samples were collected weekly. Thermoregulatory responses were lower in postnatal CL calves compared with postnatal HT. In the afternoon, HT-HT calves had the highest respiration rate and rectal temperature, HT-CL calves had the lowest respiration rate, and CL-HT calves had the lowest heart rate compared with the other treatment groups. Prenatal CL calves weighed more at birth and weaning with a tendency for greater average daily gain compared with prenatal HT calves, whereas postnatal CL calves had increased milk replacer and concentrate intake and a tendency for reduced fever, infection, and total medication events relative to postnatal HT. Prenatal HT calves were esophageal tube fed more often than prenatal CL. Blood hematocrit and 24-h serum IgG concentration were greater in prenatal CL calves relative to prenatal HT. Prenatal heat stress abatement improves weight gain, hematocrit, and immunoglobulin transfer, whereas postnatal heat stress abatement modulates thermoregulatory responses, feed intake, and calf health. This study is the first to characterize the combined effects of pre- and postnatal heat stress or active cooling on the dairy calf.

Un recorrido por la historia del lavado de las manos

Fundamento:la higiene de las manos es lo más importante para el autocuidado, es una de las formas más económicas y eficaces de prevenir enfermedades como el cólera, fiebre tifoidea, enfermedades respiratorias agudas y otras enfermedades de transmisión digestiva.Objetivo:fundamentar un recorrido por la historia del lavado de mano.Métodos:se realizó una revisión bibliográfica con el método de análisis bibliográfico, a través de una búsqueda realizada sin restricciones de idioma, desde el año 2008 hasta el momento actual año 2019, al seguir en el análisis un orden cronológico. Los términos que se utilizaron para la búsqueda, localizados en el DeCS, fueron: higiene de las manos, enfermedades transmisibles, cuidados en las bases de datos: SciELO, Ebsco, LILAC, MEDLINE en las que se identificaron 94 documentos publicados, de ellos, se seleccionaron para la revisión 35 documentos que responden al objetivo.Resultados:se hace referencia a los antecedentes biográficos de Ignaz Philipp Semmelweis. Se alude a los antecedentes del lavado de manos en Cuba y a la necesidad de cumplir el lavado de las manos en los hospitales, se brinda información sobre la promoción de la adecuada higiene de las manos para reducir el riesgo de contraer enfermedades trasmisibles.Conclusiones:la promoción de la adecuada higiene de las manos reduce el riesgo de contraer enfermedades trasmisibles. Al brindar cuidados con manos seguras, se ofrece un servicio de calidad que preserva la seguridad del paciente en todos los ámbitos.[AU]

Increasing serotonin bioavailability in preweaned dairy calves impacts hematology, growth, and behavior.

Peripheral serotonin has been shown to regulate important physiological functions such as energy homeostasis and immunity, particularly in rodent and humans, but its role is poorly understood in livestock species. Herein, we tested the safety and effectiveness of increasing serotonin bioavailability in preweaned dairy calves by oral supplementation of a serotonin precursor (5-hydroxytryptophan, 5-HTP) or a serotonin reuptake inhibitor (fluoxetine, FLX). Bull Holstein calves (21 ± 2 d old; N = 24) were fed milk replacer (8 L/d) supplemented with either saline as control (CON, 8 mL/d, n = 8), FLX (40 mg/d, approx. 0.8 mg/kg; n = 8), or 5-HTP (90 mg/d, approx. 1.8 mg/kg; n = 8) for 10 consecutive days in a complete randomized block design. Heart rate (HR), respiration rate, rectal temperature, and health scores were recorded daily. Hip height and body weight were measured at d 1, 5, and 10 relative to initiation of supplementation. Blood samples were collected once before the supplementation period (d 1), during the 10-d supplementation period (daily), and during a 14-d withdrawal period (d 2, 3, 4, 7, and 14 relative to initiation of withdrawal). Cerebrospinal fluid and muscle tissue were collected from a subset of calves (n = 12) that were euthanized after the 10-d supplementation or 14-d withdrawal period. Whole blood serotonin concentrations increased in 5-HTP calves and decreased in FLX calves compared with CON (P < 0.001), indicating that serotonin bioavailability was increased in both groups. Whole blood serotonin concentrations of 5-HTP and FLX calves returned to CON levels after 7 d of withdrawal. All calves grew and were considered healthy throughout the study. In fact, calves fed 5-HTP had higher average daily gain compared with CON (0.87 vs 0.66 ± 0.12 kg/d, P = 0.05). Calves fed FLX had lower HR (P = 0.02) and greater red blood cells and hemoglobin counts on d 10 of supplementation compared with CON (P < 0.01). After the 14-d withdrawal period, FLX was not detected in circulation of FLX calves, but was still present in the muscle tissue. Our results demonstrate that manipulation of the serotonin pathway by supplementing FLX or 5-HTP is a feasible and safe approach in preweaned dairy calves; however, it takes more than 14 d for FLX to be completely withdrawn from the body.

Fractura de fémur en un recién nacido: cuando la radiografía no es diagnóstica / Congenital femur fracture: when the radiograph undiagnosed

Se presenta el caso de un recién nacido con una fractura de fémur asociada al nacimiento. Aparte de la escasa incidencia de estas fracturas, se demuestra la importancia de la ecografía para el diagnóstico de estas lesiones óseas en algunos casos (AU)

The case of a newborn with a femur fracture associated with the birth is presented. Apart from the low incidence of these fractures, it stresses the importance of ultrasonography in the diagnosis of some of these bone lesions (AU)

Oxalosis y livedo reticularis / Oxalosis and Livedo Reticularis

La oxalosis es una enfermedad derivada del depósito de oxalato cálcico fuera del aparato urinario. Los lugares de depósito extrarrenales más frecuentes incluyen el hueso, el miocardio, la retina, los vasos sanguíneos y la piel, lo que da lugar a las manifestaciones clínicas de esta enfermedad. En la piel las alteraciones pueden deberse a la afectación de los vasos sanguíneos, lo que da lugar a la aparición de cuadros de livedo reticularis, acrocianosis, úlceras y gangrena. Presentamos el caso de una mujer de 60 años con historia de litiasis renal recidivante, que le llevó a una insuficiencia renal terminal que requirió hemodiálisis y posteriormente diálisis peritoneal. La paciente desarrolló de forma súbita la aparición de elementos cutáneos de color rojo-violáceo, dolorosos a la palpación compatibles con livedo reticularis que evolucionaron a úlceras. La biopsia cutánea reveló una vasculopatía por oxalato.En este artículo se describen las características de este raro proceso, su diagnóstico diferencial con la calcifilaxis y las alternativas terapéuticas (AU)

Oxalosis is a disease caused by the deposition of calcium oxalate in extrarenal tissues, most commonly bone, myocardium, retina, blood vessels, and skin, causing the clinical manifestations of the disease. Involvement of the blood vessels of the skin can give rise to livedo reticularis, acrocyanosis, ulcers, and gangrene. We present the case of a 60-year-old woman with a history of recurrent renal lithiasis that had led to terminal renal failure requiring hemodialysis and, subsequently, peritoneal dialysis. The patient developed tender red-violaceous skin discoloration of sudden onset, consistent with livedo reticularis; the lesions progressed to form ulcers. Skin biopsy revealed oxalate vasculopathy. In this article we describe the characteristics of this rare disorder, its differentiation from calciphylaxis, and the therapeutic options (AU)

Oxalosis and livedo reticularis.

Oxalosis is a disease caused by the deposition of calcium oxalate in extrarenal tissues, most commonly bone, myocardium, retina, blood vessels, and skin, causing the clinical manifestations of the disease. Involvement of the blood vessels of the skin can give rise to livedo reticularis, acrocyanosis, ulcers, and gangrene. We present the case of a 60-year-old woman with a history of recurrent renal lithiasis that had led to terminal renal failure requiring hemodialysis and, subsequently, peritoneal dialysis. The patient developed tender red-violaceous skin discoloration of sudden onset, consistent with livedo reticularis; the lesions progressed to form ulcers. Skin biopsy revealed oxalate vasculopathy. In this article we describe the characteristics of this rare disorder, its differentiation from calciphylaxis, and the therapeutic options.

Hemangioma arteriovenoso (aneurismacirsoide) subungueal / Subungual arteriovenous tumour (cirsoid aneurysm)

El hemangioma arteriovenoso subungueal es una entidad infrecuente y de carácter benigno descripta como una proliferación de los canales de Sucquet-Hoyer del cuerpo glómico. Se describe un caso y se enfatiza en la importancia del conocimiento de sus diagnósticos diferenciales y se realiza una actualización del tema (AU)

The subungueal arteriovenous tumour is an rare benign entity and it has been described as a proliferation of Sucquet-Hoyer channels of the glomusbody. A case report is presented and we emphasizes in the differential diagnosis. An update is made (AU)

Reclaimed wastewater quality enhancement by oxygen injection during transportation.

In-sewer treatments have been studied in sewer systems, but few have been carried out on reclaimed wastewater systems. A study of oxygen injection has been performed in a completely filled gravity pipe, 0.6 m in diameter and 62 km long, in cast iron with concrete inside coating, which is part of the reclaimed wastewater reuse scheme of Tenerife (Spain). A high pressure oxygen injection system was installed at 16.0 km from pipe inlet and a constant dosage of 30 mg/L O(2) has been injected during six months, under three different operational modes (low COD, 63 mg/L; high COD, 91 mg/L; and partially nitrified water). Oxygen has been consumed in nitrification and organic matter reduction. Generally, nitrification is clearly favored instead of the organic matter oxidation. Nitrification occurs, in general, with nitrite accumulation due to the presence of free ammonia above 1 mg/L. Denitrification is in all cases incomplete due to a limitation of easily biodegradable organic matter content, inhibiting the appearance of anaerobic conditions and sulfide generation. A notable reduction of organic matter parameters is achieved (TSS below 10 mg/L), which is significantly higher than that observed under the ordinary transport conditions without oxygen. This leads to a final cost reduction, and the oxygen injection system helps water reuse managers to maintain a final good water quality in the case of a treatment plant malfunction.

Recomendaciones y manejo de la tirosinemia hereditaria Tipo I o Tirosinemia hepatorrenal / Recommendations and management of Type I hereditary or hepatorenal Tyrosinemia

La Tirosinemia tipo I es una enfermedad potencialmente letal si no se diagnostica y trata adecuadamente. Los avances diagnóstico terapéuticos en los últimos años han mejorado ostensiblemente el pronóstico de estos pacientes. Por ello es importante que el pediatra disponga de una guía de práctica clínica con recomendaciones para el diagnóstico, y manejo terapéutico de esta enfermedad que contribuya a una adecuada actuación (AU)

Tyrosinemia type I is a potentially lethal disease if not diagnosed and treated properly. Diagnostic and therapeutic advances in recent years have significantly improved the prognosis for these patients. It is therefore important that the pediatrician has a clinical practice guideline with recommendations for diagnosis and treatment of this disease that leads to the appropriate intervention (AU)