Effect of Dietary Selenium and Vitamin E Supplementation on Testicular Morphology and Serum Testosterone Concentration in Goats Following Scrotal Insulation

Background: Heat directly applied to the testis has been providing information regarding the damage triggering mechanisms on spermatogenesis and possible treatments to prevent testicular changes. Testis submitted to heat-shock have inhibition of the local antioxidant defense mechanisms against lipid peroxidation and free radicals. Vitamin E and Selenium protect biological membranes against free radicals to prevent membrane lipid peroxidation. The current assay evaluated the effect of dietary supplementation with Selenium and Vitamin E on testicular parenchyma and testosterone levels of goats submitted to heat shock by scrotal insulation.Materials, Methods & Results: The effect of dietary selenium and vitamin E supplementation on testicular parameters and serum testosterone concentration was evaluated in goats subjected to scrotal insulation. The animals were randomly allocated into two groups (n = 6) to receive either a control diet (CO) or a diet supplemented with selenium and vitamin E (SE). The animals received supplementation for 120 days: 60 days prior to scrotal insulation, 18 days during scrotal insulation and 42 days after scrotal insulation. Orchiectomy was performed on three animals from each group, immediately after the end of scrotal insulation. The remaining animals were neutered at the end of the experimental period (120 days). Testicles were routinely processed and embedded in glycol methacrylate, stained with toluidine blue/1% sodium borate and evaluated qualitative and quantitatively. Serum testosterone concentrations were determined by enzyme immunoassay at the time of the orchiectomy. Scrotal circumference was greater (P < 0.05) in goats of the SE group (23.0 ± 1.00 cm) than those of the control group (20.0 ± 1.00 cm) at the end of the scrotal insulation period (Day 18).  At the end of the experimental period (Day 42 post-scrotal insulation (PSI)), the seminiferous tubule diameter and seminiferous epithelium height were greater (P < 0.05) in the SE group than in control. Histological changes associated with testicular degeneration were detected after 18 days of scrotal insulation in the goats of the control group. The animals of SE group had some histological changes of seminiferous tubules but the majority of them had normal association of germ cells. Selenium and vitamin E supplementation did not seem to avoid testicular damage caused by scrotal insulation but accelerated testicular recovery after the removal of insulation. Testosterone serum levels were not changed in the animals submitted to scrotal insulation, with or without dietary supplementation with selenium and vitamin E.Discussion: In the current study, scrotal insulation for 18 days caused testicular degeneration in both groups. However, selenium and vitamin E supplementation were capable of maintaining the scrotal circumference on the 18th day of insulation in the SE group. Previous reports suggested that selenium and vitamin E could protect cell membranes against the harmful effects of reactive oxygen species. However, the histopathological changes and morphometric data observed in the both groups after 18 days of insulation demonstrated that supplementation with these antioxidants did not prevent the damage caused by heat stress.  In turn, at 42 days after the removal of insulation, the tubular diameter and seminiferous epithelium height was greater in animals supplemented with selenium and vitamin E. In addition, the animals that received supplementation had most of seminiferous tubules with cell associations of the seminiferous epithelium cycle. Vitamin E and selenium may reduce testicle sensitivity to heat and thereby shorten the spermatogenesis recovery time by 10 to 20 days. Selenium plus vitamin E added to feed was unable to prevent the degeneration of the testicular parenchyma in these animals. Nonetheless, the supplementation with both antioxidants hastened the recovery of spermatogenesis after the thermal injury

Correlation of enthesitis indices with disease activity and function in axial and peripheral spondyloarthritis : a cross-sectional study comparing MASES, SPARCC and LEI

Background: The presence of enthesitis is associated with higher disease activity, more disability and incapacity to work and a poorer quality of life in spondyloarthritis (SpA). There is currently no consensus on which clinical score should be used to assess enthesitis in SpA. The objective of the present work was to compare the correlation of three enthesitis indices (MASES, SPARCC and LEI) with measures of disease activity and function in a heterogeneous population of patients with axial and peripheral SpA. Methods: A cross-sectional study was conducted in three Brazilian public university hospitals; patients fulfilling ASAS classification criteria for peripheral or axial SpA were recruited and measures of disease activity and function were collected and correlated to three enthesitis indices: MASES, SPARCC and LEI using Spearman’s Correlation index. ROC curves were used to determine if the the enthesitis indices were useful to discriminate patients with active disease from those with inactive disease. Results: Two hundred four patients were included, 71.1% (N = 145) fulfilled ASAS criteria for axial SpA and 28.9% (N = 59) for peripheral SpA. In axial SpA, MASES performed better than LEI (p = 0.018) and equal to SPARCC (p = 0.212) regarding correlation with disease activity (BASDAI) and function (BASFI). In peripheral SpA, only MASES had a weak but statistical significant correlation with DAS28-ESR (rs 0.310 p = 0.05) and MASES had better correlation with functional measures (HAQ) than SPARCC (p = 0.034). Conclusion: In this sample composed of SpA patients with high coexistence of axial and peripheral features, MASES showed statistical significant correlation with measures of disease activity and function in both axial and peripheral SpA

Violências e direitos humanos em pesquisa com crianças

Resumo O objetivo do artigo é apresentar os caminhos trilhados na pesquisa com crianças nos anos de 2012 e 2013, em uma escola pública municipal de Campo Grande, capital do Mato Grosso do Sul, bem como ouvir as vozes das crianças sobre as temáticas da violência e direitos humanos. Os referenciais teóricos foram os dos estudos de gênero e dos estudos culturais. Os pressupostos metodológicos foram os da pesquisa com crianças com as seguintes estratégias: encontros semanais com grandes grupos, da sala toda, e encontros com pequenos grupos. No artigo, priorizamos as ações realizadas na primeira etapa do projeto, nos encontros dos grandes grupos, para a produção escrita e desenhada das crianças em atividades que versaram as seguintes questões: violência contra criança; como cuido do meu corpo e o protejo; perigos de meninos e meninas dentro e fora de casa; direitos das crianças e violência dentro e fora da escola. As crianças demonstraram inicialmente ter poucos argumentos para falar sobre as situações de violência já presenciadas, mas aos poucos foram encontrando espaços para pensar a respeito e condições de serem ouvidas. Começaram a perceber a fertilidade das discussões e passaram a entender que muitas crianças estão em situação de vulnerabilidade e que necessitam conhecer seus direitos para poder se proteger. As temáticas da violência e dos direitos humanos foram pulsantes e nos fizeram pensar que as crianças querem discutir esses assuntos; no entanto, nem sempre encontram espaço para isso, sobretudo na escola

Incidence, Clinical Characteristics and Management of Inflammatory Bowel Disease in Spain : Large-Scale Epidemiological Study

(1) Aims: To assess the incidence of inflammatory bowel disease (IBD) in Spain, to describe the main epidemiological and clinical characteristics at diagnosis and the evolution of the disease, and to explore the use of drug treatments. (2) Methods: Prospective, population-based nationwide registry. Adult patients diagnosed with IBD-Crohn's disease (CD), ulcerative colitis (UC) or IBD unclassified (IBD-U)-during 2017 in Spain were included and were followed-up for 1 year. (3) Results: We identified 3611 incident cases of IBD diagnosed during 2017 in 108 hospitals covering over 22 million inhabitants. The overall incidence (cases/100,000 person-years) was 16 for IBD, 7.5 for CD, 8 for UC, and 0.5 for IBD-U; 53% of patients were male and median age was 43 years (interquartile range = 31-56 years). During a median 12-month follow-up, 34% of patients were treated with systemic steroids, 25% with immunomodulators, 15% with biologics and 5.6% underwent surgery. The percentage of patients under these treatments was significantly higher in CD than UC and IBD-U. Use of systemic steroids and biologics was significantly higher in hospitals with high resources. In total, 28% of patients were hospitalized (35% CD and 22% UC patients, p < 0.01). (4) Conclusion: The incidence of IBD in Spain is rather high and similar to that reported in Northern Europe. IBD patients require substantial therapeutic resources, which are greater in CD and in hospitals with high resources, and much higher than previously reported. One third of patients are hospitalized in the first year after diagnosis and a relevant proportion undergo surgery

Correction : Chaparro et al. Incidence, Clinical Characteristics and Management of Inflammatory Bowel Disease in Spain: Large-Scale Epidemiological Study. J. Clin. Med. 2021, 10, 2885

The authors wish to make the following corrections to this paper [...]

Higher COVID-19 pneumonia risk associated with anti-IFN-α than with anti-IFN-ω auto-Abs in children

We found that 19 (10.4%) of 183 unvaccinated children hospitalized for COVID-19 pneumonia had autoantibodies (auto-Abs) neutralizing type I IFNs (IFN-alpha 2 in 10 patients: IFN-alpha 2 only in three, IFN-alpha 2 plus IFN-omega in five, and IFN-alpha 2, IFN-omega plus IFN-beta in two; IFN-omega only in nine patients). Seven children (3.8%) had Abs neutralizing at least 10 ng/ml of one IFN, whereas the other 12 (6.6%) had Abs neutralizing only 100 pg/ml. The auto-Abs neutralized both unglycosylated and glycosylated IFNs. We also detected auto-Abs neutralizing 100 pg/ml IFN-alpha 2 in 4 of 2,267 uninfected children (0.2%) and auto-Abs neutralizing IFN-omega in 45 children (2%). The odds ratios (ORs) for life-threatening COVID-19 pneumonia were, therefore, higher for auto-Abs neutralizing IFN-alpha 2 only (OR [95% CI] = 67.6 [5.7-9,196.6]) than for auto-Abs neutralizing IFN-. only (OR [95% CI] = 2.6 [1.2-5.3]). ORs were also higher for auto-Abs neutralizing high concentrations (OR [95% CI] = 12.9 [4.6-35.9]) than for those neutralizing low concentrations (OR [95% CI] = 5.5 [3.1-9.6]) of IFN-omega and/or IFN-alpha 2

Goodbye Hartmann trial: a prospective, international, multicenter, observational study on the current use of a surgical procedure developed a century ago

Background: Literature suggests colonic resection and primary anastomosis (RPA) instead of Hartmann's procedure (HP) for the treatment of left-sided colonic emergencies. We aim to evaluate the surgical options globally used to treat patients with acute left-sided colonic emergencies and the factors that leading to the choice of treatment, comparing HP and RPA. Methods: This is a prospective, international, multicenter, observational study registered on ClinicalTrials.gov. A total 1215 patients with left-sided colonic emergencies who required surgery were included from 204 centers during the period of March 1, 2020, to May 31, 2020. with a 1-year follow-up. Results: 564 patients (43.1%) were females. The mean age was 65.9 ± 15.6&nbsp;years. HP was performed in 697 (57.3%) patients and RPA in 384 (31.6%) cases. Complicated acute diverticulitis was the most common cause of left-sided colonic emergencies (40.2%), followed by colorectal malignancy (36.6%). Severe complications (Clavien-Dindo ≥ 3b) were higher in the HP group (P &lt; 0.001). 30-day mortality was higher in HP patients (13.7%), especially in case of bowel perforation and diffused peritonitis. 1-year follow-up showed no differences on ostomy reversal rate between HP and RPA. (P = 0.127). A backward likelihood logistic regression model showed that RPA was preferred in younger patients, having low ASA score (≤ 3), in case of large bowel obstruction, absence of colonic ischemia, longer time from admission to surgery, operating early at the day working hours, by a surgeon who performed more than 50 colorectal resections. Conclusions: After 100&nbsp;years since the first Hartmann's procedure, HP remains the most common treatment for left-sided colorectal emergencies. Treatment's choice depends on patient characteristics, the time of surgery and the experience of the surgeon. RPA should be considered as the gold standard for surgery, with HP being an exception

Familial hypercholesterolaemia in children and adolescents from 48 countries: a cross-sectional study

Background: Approximately 450 000 children are born with familial hypercholesterolaemia worldwide every year, yet only 2·1% of adults with familial hypercholesterolaemia were diagnosed before age 18 years via current diagnostic approaches, which are derived from observations in adults. We aimed to characterise children and adolescents with heterozygous familial hypercholesterolaemia (HeFH) and understand current approaches to the identification and management of familial hypercholesterolaemia to inform future public health strategies. Methods: For this cross-sectional study, we assessed children and adolescents younger than 18 years with a clinical or genetic diagnosis of HeFH at the time of entry into the Familial Hypercholesterolaemia Studies Collaboration (FHSC) registry between Oct 1, 2015, and Jan 31, 2021. Data in the registry were collected from 55 regional or national registries in 48 countries. Diagnoses relying on self-reported history of familial hypercholesterolaemia and suspected secondary hypercholesterolaemia were excluded from the registry; people with untreated LDL cholesterol (LDL-C) of at least 13·0 mmol/L were excluded from this study. Data were assessed overall and by WHO region, World Bank country income status, age, diagnostic criteria, and index-case status. The main outcome of this study was to assess current identification and management of children and adolescents with familial hypercholesterolaemia. Findings: Of 63 093 individuals in the FHSC registry, 11 848 (18·8%) were children or adolescents younger than 18 years with HeFH and were included in this study; 5756 (50·2%) of 11 476 included individuals were female and 5720 (49·8%) were male. Sex data were missing for 372 (3·1%) of 11 848 individuals. Median age at registry entry was 9·6 years (IQR 5·8-13·2). 10 099 (89·9%) of 11 235 included individuals had a final genetically confirmed diagnosis of familial hypercholesterolaemia and 1136 (10·1%) had a clinical diagnosis. Genetically confirmed diagnosis data or clinical diagnosis data were missing for 613 (5·2%) of 11 848 individuals. Genetic diagnosis was more common in children and adolescents from high-income countries (9427 [92·4%] of 10 202) than in children and adolescents from non-high-income countries (199 [48·0%] of 415). 3414 (31·6%) of 10 804 children or adolescents were index cases. Familial-hypercholesterolaemia-related physical signs, cardiovascular risk factors, and cardiovascular disease were uncommon, but were more common in non-high-income countries. 7557 (72·4%) of 10 428 included children or adolescents were not taking lipid-lowering medication (LLM) and had a median LDL-C of 5·00 mmol/L (IQR 4·05-6·08). Compared with genetic diagnosis, the use of unadapted clinical criteria intended for use in adults and reliant on more extreme phenotypes could result in 50-75% of children and adolescents with familial hypercholesterolaemia not being identified. Interpretation: Clinical characteristics observed in adults with familial hypercholesterolaemia are uncommon in children and adolescents with familial hypercholesterolaemia, hence detection in this age group relies on measurement of LDL-C and genetic confirmation. Where genetic testing is unavailable, increased availability and use of LDL-C measurements in the first few years of life could help reduce the current gap between prevalence and detection, enabling increased use of combination LLM to reach recommended LDL-C targets early in life

Minimal information for studies of extracellular vesicles (MISEV2023): From basic to advanced approaches

Extracellular vesicles (EVs), through their complex cargo, can reflect the state of their cell of origin and change the functions and phenotypes of other cells. These features indicate strong biomarker and therapeutic potential and have generated broad interest, as evidenced by the steady year-on-year increase in the numbers of scientific publications about EVs. Important advances have been made in EV metrology and in understanding and applying EV biology. However, hurdles remain to realising the potential of EVs in domains ranging from basic biology to clinical applications due to challenges in EV nomenclature, separation from non-vesicular extracellular particles, characterisation and functional studies. To address the challenges and opportunities in this rapidly evolving field, the International Society for Extracellular Vesicles (ISEV) updates its 'Minimal Information for Studies of Extracellular Vesicles', which was first published in 2014 and then in 2018 as MISEV2014 and MISEV2018, respectively. The goal of the current document, MISEV2023, is to provide researchers with an updated snapshot of available approaches and their advantages and limitations for production, separation and characterisation of EVs from multiple sources, including cell culture, body fluids and solid tissues. In addition to presenting the latest state of the art in basic principles of EV research, this document also covers advanced techniques and approaches that are currently expanding the boundaries of the field. MISEV2023 also includes new sections on EV release and uptake and a brief discussion of in vivo approaches to study EVs. Compiling feedback from ISEV expert task forces and more than 1000 researchers, this document conveys the current state of EV research to facilitate robust scientific discoveries and move the field forward even more rapidly