Severe Acute Kidney Injury in Hospitalized Cancer Patients: Epidemiology and Predictive Model of Renal Replacement Therapy and In-Hospital Mortality.

BACKGROUND: Acute kidney injury (AKI) is a common complication among cancer patients, often leading to longer hospital stays, discontinuation of cancer treatment, and a poor prognosis. This study aims to provide insight into the incidence of severe AKI in this population and identify the risk factors associated with renal replacement therapy (RRT) and in-hospital mortality. METHODS: This retrospective cohort study included 3201 patients with cancer and severe AKI admitted to a Comprehensive Cancer Center between January 1995 and July 2023. Severe AKI was defined according to the KDIGO guidelines as grade ≥ 2 AKI with nephrological in-hospital follow-up. Data were analyzed in two timelines: Period A (1995-2010) and Period B (2011-2023). RESULTS: A total of 3201 patients (1% of all hospitalized cases) were included, with a mean age of 62.5 ± 17.2 years. Solid tumors represented 75% of all neoplasms, showing an increasing tendency, while hematological cancer decreased. Obstructive AKI declined, whereas the incidence of sepsis-associated, prerenal, and drug-induced AKI increased. Overall, 20% of patients required RRT, and 26.4% died during hospitalization. A predictive model for RRT (AUC 0.833 [95% CI 0.817-0.848]) identified sepsis and hematological cancer as risk factors and prerenal and obstructive AKI as protective factors. A similar model for overall in-hospital mortality (AUC 0.731 [95% CI 0.71-0.752]) revealed invasive mechanical ventilation (IMV), sepsis, and RRT as risk factors and obstructive AKI as a protective factor. The model for hemato-oncological patients' mortality (AUC 0.832 [95% CI 0.803-0.861]) included IMV, sepsis, hematopoietic stem cell transplantation, and drug-induced AKI. Mortality risk point score models were derived from these analyses. CONCLUSIONS: This study addresses the demographic and clinical features of cancer patients with severe AKI. The development of predictive models for RRT and in-hospital mortality, along with risk point scores, may play a role in the management of this population.

Detection of NTRK fusions by RNA-based nCounter is a feasible diagnostic methodology in a real-world scenario for non-small cell lung cancer assessment.

NTRK1, 2, and 3 fusions are important therapeutic targets for NSCLC patients, but their prevalence in South American admixed populations needs to be better explored. NTRK fusion detection in small biopsies is a challenge, and distinct methodologies are used, such as RNA-based next-generation sequencing (NGS), immunohistochemistry, and RNA-based nCounter. This study aimed to evaluate the frequency and concordance of positive samples for NTRK fusions using a custom nCounter assay in a real-world scenario of a single institution in Brazil. Out of 147 NSCLC patients, 12 (8.2%) cases depicted pan-NTRK positivity by IHC. Due to the absence of biological material, RNA-based NGS and/or nCounter could be performed in six of the 12 IHC-positive cases (50%). We found one case exhibiting an NTRK1 fusion and another an NTRK3 gene fusion by both RNA-based NGS and nCounter techniques. Both NTRK fusions were detected in patients diagnosed with lung adenocarcinoma, with no history of tobacco consumption. Moreover, no concomitant EGFR, KRAS, and ALK gene alterations were detected in NTRK-positive patients. The concordance rate between IHC and RNA-based NGS was 33.4%, and between immunohistochemistry and nCounter was 40%. Our findings indicate that NTRK fusions in Brazilian NSCLC patients are relatively rare (1.3%), and RNA-based nCounter methodology is a suitable approach for NRTK fusion identification in small biopsies.

Is Erythrocytosis More Common After Simultaneous Pancreas Kidney Transplantation? A Single-Center Experience.

Post-transplant erythrocytosis (PTE) is reported in 8% to 22% of kidney transplant recipients. Few studies have evaluated the prevalence of PTE in simultaneous kidney-pancreas transplantation (SPKT). This study aimed to evaluate the prevalence of PTE in a cohort of SPKT and same-donor single kidney transplant patients and find predictive factors for erythrocytosis development. A single-center retrospective cohort study was performed with 65 SPKT recipients and 65 same-donor single kidney transplant patients. Post-transplant erythrocytosis was defined as a hematocrit persistently >51% without a known cause of erythrocytosis. The PTE prevalence was 23.1% and was more frequent in SPKT patients than in single donor patients (38.5% vs 7.7%; P < .001). The mean time for PTE development was 11.2 ± 13.3 months. In the multivariate model, SPKT was the only predictor for PTE development. De novo hypertension was more frequent in the PTE group (P = .002), but there was no difference in stroke and pancreatic or kidney thrombosis occurrence. Post-transplant erythrocytosis is more common after SPKT than after single kidney transplantation. De novo hypertension was more frequent in the erythrocytosis group, but allograft thrombosis rates.

Kidney Disease in Ankylosing Spondylitis: a case series and review of the literature / Doença Renal na Espondilite Anquilosante: uma série de casos e revisão da literatura

Abstract Background Kidney disease is a rare manifestation of ankylosing spondylitis (AS) and its pathological alterations remain poorly described. The aim of this study was to investigate the clinical presentation and pathological alterations on kidney biopsy of AS patients and review and discuss the current literature on the issue. Methods: We retrospectively studied the clinical presentation and kidney pathological alterations of 15 Caucasian AS patients submitted to kidney biopsy between October 1985 and March 2021. Results: Patients were predominantly male (66.7%) with median age at the time of kideney biopsy of 47 years [IQR 34 - 62]. Median serum creatinine at presentation was 1.3 mg/dL [IQR 0.9 - 3] and most patients also had either proteinuria (85.7%) and/or hematuria (42.8%). The most common indication for kidney biopsy was nephrotic syndrome (33.3%), followed by acute or rapidly progressive kidney injury (20%) and chronic kidney disease of unknown etiology (20%). Chronic interstitial nephritis (CIN) (n=3) and AA amyloidosis (n=3) were the most common diagnosis. Others included IgA nephropathy (IgAN) (n=2), focal segmental glomerulosclerosis (n=2), membranous nephropathy (n=1), and immune complex-mediated membranoproliferative glomerulonephritis (IC-MPGN)(n=1). Conclusions: We present one of the largest series of biopsy-proven kidney disease in Caucasian AS patients. We found a lower prevalence of IgAN than previously reported in Asian cohorts. We found a higher prevalence of CIN and a lower prevalence of AA amyloidosis than that described in previous series of Caucasian patients. We also present the first case of AS-associated IC-MPGN.

Resumo Antecedentes: A doença renal é uma manifestação rara de espondilite anquilosante (EA) e as suas alterações patológicas permanecem pouco descritas. O objetivo deste estudo foi investigar a apresentação clínica e alterações patológicas na biópsia renal de doentes com EA bem como rever e discutir a literatura atual sobre o assunto. Métodos: Estudamos retrospectivamente a apresentação clínica e alterações patológicas renais de 15 doentes caucasianos com EA submetidos a biópsia renal entre Outubro de 1985 e Março de 2021. Resultados: Os doentes eram predominantemente homens (66,7%) com idade mediana no momento da biópsia de 47 anos [IIQ 34 - 62]. A creatinina sérica mediana na apresentação foi de 1,3 mg/dL [IIQ 0,9 - 3] e a maioria dos pacientes apresentava também proteinúria (85,7%) e/ou hematúria (42,8%). A indicação mais comum para biópsia renal foi a síndrome nefrótica (33,3%), seguida de lesão renal aguda ou rapidamente progressiva (20%) e doença renal crónica de etiologia desconhecida (20%). A Nefrite intersticial crónica (NIC) (n=3) e a amiloidose AA (n=3) foram os diagnósticos mais comuns. Outros incluíram nefropatia por IgA (NIgA) (n=2), glomeruloesclerose segmentar focal (n=2), nefropatia membranosa (n=1) e glomerulonefrite membranoproliferativa mediada por imunocomplexos (GNMP-IC) (n=1). Conclusões: Apresentamos uma das maiores séries de doenças renais comprovadas por biópsia em doentes caucasianos com EA. Encontramos uma prevalência de NIgA menor do que a relatada anteriormente em coortes asiáticas. Encontramos uma maior prevalência de NIC e uma prevalência menor de amiloidose AA do que a descrita em séries anteriores de pacientes caucasianos. Também apresentamos o primeiro caso de GNMP-IC associada à EA.

Kidney Disease in Ankylosing Spondylitis: a case series and review of the literature.

BACKGROUND: Kidney disease is a rare manifestation of ankylosing spondylitis (AS) and its pathological alterations remain poorly described. The aim of this study was to investigate the clinical presentation and pathological alterations on kidney biopsy of AS patients and review and discuss the current literature on the issue. METHODS: We retrospectively studied the clinical presentation and kidney pathological alterations of 15 Caucasian AS patients submitted to kidney biopsy between October 1985 and March 2021. RESULTS: Patients were predominantly male (66.7%) with median age at the time of kideney biopsy of 47 years [IQR 34 - 62]. Median serum creatinine at presentation was 1.3 mg/dL [IQR 0.9 - 3] and most patients also had either proteinuria (85.7%) and/or hematuria (42.8%). The most common indication for kidney biopsy was nephrotic syndrome (33.3%), followed by acute or rapidly progressive kidney injury (20%) and chronic kidney disease of unknown etiology (20%). Chronic interstitial nephritis (CIN) (n=3) and AA amyloidosis (n=3) were the most common diagnosis. Others included IgA nephropathy (IgAN) (n=2), focal segmental glomerulosclerosis (n=2), membranous nephropathy (n=1), and immune complex-mediated membranoproliferative glomerulonephritis (IC-MPGN)(n=1). CONCLUSIONS: We present one of the largest series of biopsy-proven kidney disease in Caucasian AS patients. We found a lower prevalence of IgAN than previously reported in Asian cohorts. We found a higher prevalence of CIN and a lower prevalence of AA amyloidosis than that described in previous series of Caucasian patients. We also present the first case of AS-associated IC-MPGN.

Violência sexual contra mulheres por parceiro íntimo e desigualdade de gênero na voz dos profissionais da Atenção Primária à Saúde / Violencia sexual contra las mujeres por parte de la pareja íntima y desigualdad de género en la voz de los profesionales de la Atención Primaria de Salud / Sexual violence against women by intimate partner and gender inequality in the voice of Primary Health Care professionals

É difícil reconhecer o sexo forçado vivido nas relações sexuais no âmbito doméstico como violência. Há também uma imprecisão entre a violência, tal como no sexo forçado, e a desigualdade de gênero, como na aceitação do dever marital. Buscou-se compreender o que profissionais da Atenção Primária pensam sobre essas duas experiências, como interpretam relatos das mulheres e o que fazem sobre isso. Entrevistados, os profissionais dizem que sexo forçado ou sexo sem consentimento explícito são ambos violência, e assim devem ser nomeados. Agindo desse modo, eles pensam esclarecer suas pacientes acerca dos direitos das mulheres. No entanto, no dia a dia, nem todos o fazem e ninguém reconheceu ou nomeou a aceitação do dever marital como desigualdade de gênero. Conclui-se que, se a violência está presente como questão, sua distinção quanto à desigualdade de gênero ainda é um desafio.(AU)

Es difícil reconocer el sexo forzado vivido en las relaciones sexuales en el ámbito doméstico como violencia. Hay también una imprecisión entre la violencia, tal como en el sexo forzado, y la desigualdad de género, como en la aceptación del deber conyugal. Se buscó entender lo que los profesionales de la atención primaria piensan sobre esas dos experiencias, cómo interpretan los relatos de las mujeres y qué hacen sobre eso. Al ser entrevistados, los profesionales decían que el sexo forzado o el sexo sin consentimiento explícito son violencia y deben ser denominados como tal. Actuando así, ellos piensan aclarar a sus pacientes los derechos de las mujeres. Sin embargo, en el cotidiano no todos lo hacen y ninguno reconoció o nombró la aceptación del deber conyugal como desigualdad de género. Se concluyó que la violencia está presente como cuestión y que su distinción con relación a la igualdad de género todavía es un desafío.(AU)

Studies show how difficult it is to recognize what is experienced in sexual relationships within households. There is an inaccuracy between violence as in the forced sex, and gender inequality as in the acceptance of the marital duty. We aimed to understand what health care providers think about these two experiences, how they interpret women's reports and what they do about it. Interviewed, the professionals say that both forced sex and sex with no explicit consent are violence and so they should be named. By doing so, professionals intend to enlighten their patients about women's rights. However, in everyday life not everyone does and no one recognized or named marital duty as gender inequality. We conclude that if violence is present as an issue, its distinction in relation to gender inequality is still a challenge.(AU)

Atenção primária à saúde e os serviços especializados de atendimento a mulheres em situação de violência: expectativas e desencontros na voz dos profissionais / Primary health care and the specialized care services to women in situation of violence: expectations and mismatches in the voice of professionals

Resumo O trabalho em rede tem papel central na assistência a mulheres em situação de violência. Este estudo analisa as diferentes perspectivas desse trabalho para profissionais da Atenção Primária e profissionais de serviços especializados nas áreas de assistência social, assistência jurídica e segurança pública, na cidade de São Paulo, Brasil. Realizaram-se entrevistas semi-estruturadas com 16 profissionais dos serviços especializados e 46 da saúde. Os eixos para a análise temática foram: o que os profissionais sabem e pensam sobre os demais serviços; sua atuação a partir disso; e suas expectativas. Os dados revelaram conhecimento insuficiente sobre os distintos serviços, resultando em dificuldades comunicativas, bem como em encaminhamentos equivocados pautados em idealizações sobre como deveria atuar o outro serviço. Concluímos que cada setor é bastante autônomo e seus serviços partem de seu próprio campo de atuação para definir aquilo que seria melhor para a mulher. O conjunto funciona mais como uma trama de serviços do que como uma rede.

Abstract Networking plays a central role in assisting women in situations of violence. This study analyzes how different the work perspectives are for Primary Care professionals and specialized services professionals in the areas of social and law assistance, and public security in the city of São Paulo, Brazil. Semi-structured interviews were carried out with 16 professionals from specialized services and 46 from the health sector. The axes for a thematic analysis were: what professionals know and think about services other than their own; their performance based on that; and their expectations. The findings revealed insufficient knowledge of the different services, resulting in communication difficulties as well as wrong referrals to other services, based on how other services would ideally work. We concluded that each sector is autonomous and its services start from its own field of action to define what would be best for women. The set works more like a mesh of services than a network.

Prevalência de transtorno de ansiedade e fatores associados em crianças durante a pandemia da covid-19: um estudo transversal / Prevalence of anxiety disorder and associated factors in children during the covid-19 pandemic: a cross-sectional study / Prevalencia del trastorno de ansiedad y factores asociados en niños durante la pandemia da covid-19: un estudio transversal

O objetivo do estudo foi verificar a prevalência do transtorno de ansiedade e fatores sociodemográficos, comportamentais e aspectos de saúde associados em crianças de três a 10 anos de idade, durante a pandemia da COVID-19. Estudo de delineamento transversal, realizado na região do Triângulo Mineiro, estado de Minas Gerais, Brasil. Utilizou-se a Escala Spence de Ansiedade Infantil, versão para os pais, para avaliar os sintomas das principais perturbações de ansiedade em crianças. Para comparar proporções utilizou-se o teste Qui-quadrado, os fatores associados ao transtorno de ansiedade foram encontrados por Regressão de Poisson, com intervalo de confiança de 95%. Participaram n=778 pais de crianças de três a 10 anos de idade. A prevalência do transtorno de ansiedade nas crianças foi de 1,7%. Crianças de pais analfabetos e com ensino fundamental II incompleto apresentaram razão de prevalência (RP) = 4,24 [(IC95%: 1,03 ­ 17,46), p=0,045] maior de transtorno de ansiedade que às crianças de pais com nível superior completo a pós-graduação, enquanto as crianças de pais com ensino fundamental a superior incompleto apresentaram uma RP = 2,64 [(IC95%: 0,72 ­ 9,72), p=0,045] em comparação às crianças de pais com nível superior completo a pós- graduação. Crianças com alterações nos padrões alimentares apresentaram uma RP = 11,10 [(IC95%: 1,59 ­ 77,42), p = 0,015] maior de transtorno de ansiedade, em relação às crianças que não possuíam alterações nos padrões alimentares. Concluiu-se que as variáveis que associaram ao transtorno de ansiedade foram o nível de escolaridade dos pais e alterações dos padrões alimentares das crianças.

The objective of the study was to verify the prevalence of anxiety disorder and sociodemographic, behavioral factors and associated health aspects in 3-10-year-old children, during the COVID-19 pandemic. Cross-sectional study carried out in the Triângulo Mineiro, region of Minas Gerais state, Brazil. The Spence Child Anxiety Scale, version for parents, was used to assess the symptoms of the anxiety disorders in children. The Chi-square test was used to compare proportions, the factors associated with the anxiety disorder were found by Regression Poisson, with a 95% confidence interval. Participated in this study 778 parents of 3-10-year-old children. The prevalence of anxiety disorder in children was 1.7%. Children of illiterate parents and with incomplete primary education had a prevalence ratio (PR) = 4.24 [(IC95%:1.03 ­ 17.46), p=0.045] higher for anxiety disorder than children of parents with complete higher education to graduate school, while children of parents with incomplete primary or higher education had a PR = 2.64 [(IC95%:0.72 ­ 9.72), p=0.045] compared to children of parents with a complete higher education at postgraduate level. Children with changes in eating patterns had a PR = 11.10 [(IC95%:1.59 ­ 77.42), p = 0.015] higher for anxiety disorder, compared to children who did not have changes in eating patterns. The study concluded that the variables associated with anxiety disorder were parents' education level and changes in children's eating patterns.

El objetivo del estudio fue verificar la prevalencia del trastorno de ansiedad y los factores sociodemográficos, conductuales y de salud asociados en niños de 3 a 10 años, durante la pandemia de COVID-19. Estudio transversal realizado en el Triângulo Mineiro, región del estado de Minas Gerais, Brasil. Se utilizó la Escala de Ansiedad Infantil de Spence, versión para padres, para evaluar los síntomas de los trastornos de ansiedad en los niños. Para la comparación de proporciones se utilizó la prueba de Chi- cuadrado, los factores asociados al trastorno de ansiedad fueron encontrados por Regresión de Poisson, con un intervalo de confianza del 95%. Participaron en este estudio 778 padres de niños de 3 a 10 años. La prevalencia del trastorno de ansiedad en niños fue del 1,7%. Los hijos de padres analfabetos y con educación primaria incompleta tuvieron una razón de prevalencia (RP) = 4,24 [(IC95%:1,03 ­ 17,46), p=0,045] mayor para el trastorno de ansiedad que los hijos de padres con educación superior completa a posgrado, mientras que los niños de padres con estudios primarios o superiores incompletos tuvo un PR = 2,64 [(IC95%:0,72 ­ 9,72), p=0,045] en comparación con los hijos de padres con estudios superiores completos a nivel de posgrado. Los niños con cambios en los patrones alimentarios tuvieron un PR = 11,10 [(IC95%:1,59 ­ 77,42), p = 0,015] mayor para el trastorno de ansiedad, en comparación con los niños que no tuvieron cambios en los patrones alimentarios. El estudio concluyó que las variables asociadas con el trastorno de ansiedad fueron el nivel educativo de los padres y los cambios en los patrones alimentarios de los niños.

Encapsulating peritoneal sclerosis: from early diagnosis to successful kidney transplantation / Esclerose peritoneal encapsulante: do diagnóstico precoce ao transplante renal bem-sucedido

Abstract Encapsulating peritoneal sclerosis is an uncommon but serious complication of peritoneal dialysis. In most cases, the symptoms appear after peritoneal dialysis withdrawal, which hampers its diagnosis. We present the case of a 44-years-old Caucasian male who had been on peritoneal dialysis for 6 years and 3 months and was switched to hemodialysis due to ultrafiltration failure. During his last months on peritoneal dialysis, he developed anorexia and asthenia, which were initially attributed to dialysis inadequacy. After hemodialysis induction, the patient developed abdominal pain, increased abdominal volume, obstipation alternating with diarrhea, and weight loss. Computed tomography showed de novo ascites. A diagnosis of early encapsulating peritoneal sclerosis was considered, and treatment was promptly initiated with nutritional support, oral prednisolone, and tamoxifen for one year. The patient progressed with resolution of the symptoms. One month after the end of the treatment, he underwent a successful kidney transplant and remain without any major intercurrences. A high level of clinical suspicion is crucial for the early diagnosis of encapsulating peritoneal sclerosis as the disease can be fatal in advanced stages. This case highlights that with early treatment, kidney transplantation can be successfully performed after an episode of encapsulating peritoneal sclerosis.

Resumo A esclerose peritoneal encapsulante é uma complicação incomum, mas grave, da diálise peritoneal. Na maioria dos casos, os sintomas aparecem após a suspensão da diálise peritoneal, o que dificulta seu diagnóstico. Apresentamos o caso de um homem caucasiano de 44 anos de idade que esteve em diálise peritoneal por 6 anos e 3 meses e foi transferido para hemodiálise devido a falha de ultrafiltração. Durante seus últimos meses em diálise peritoneal, ele desenvolveu anorexia e astenia, que foram inicialmente atribuídas à inadequação da diálise. Após a indução de hemodiálise, o paciente desenvolveu dor abdominal, aumento do volume abdominal, obstipação alternada com diarreia, e perda de peso. A tomografia computadorizada mostrou ascite de novo. Foi considerado um diagnóstico de esclerose peritoneal encapsulante precoce, e o tratamento foi prontamente iniciado com suporte nutricional, prednisolona oral e tamoxifeno por um ano. O paciente progrediu com resolução dos sintomas. Um mês após o término do tratamento, ele foi submetido a um transplante renal bem-sucedido e permanece sem maiores intercorrências. Um alto nível de suspeita clínica é crucial para o diagnóstico precoce da esclerose peritoneal encapsulante, uma vez que a doença pode ser fatal em estágios avançados. Este caso destaca que, com tratamento precoce, o transplante renal pode ser realizado com sucesso após um episódio de esclerose peritoneal encapsulante.

In vitro Evaluation of Isoniazid Derivatives as Potential Agents Against Drug-Resistant Tuberculosis.

The upsurge of multidrug-resistant tuberculosis has toughened the challenge to put an end to this epidemic by 2030. In 2020 the number of deaths attributed to tuberculosis increased as compared to 2019 and newly identified multidrug-resistant tuberculosis cases have been stably close to 3%. Such a context stimulated the search for new and more efficient antitubercular compounds, which culminated in the QSAR-oriented design and synthesis of a series of isoniazid derivatives active against Mycobacterium tuberculosis. From these, some prospective isonicotinoyl hydrazones and isonicotinoyl hydrazides are studied in this work. To evaluate if the chemical derivatizations are generating compounds with a good performance concerning several in vitro assays, their cytotoxicity against human liver HepG2 cells was determined and their ability to bind human serum albumin was thoroughly investigated. For the two new derivatives presented in this study, we also determined their lipophilicity and activity against both the wild type and an isoniazid-resistant strain of Mycobacterium tuberculosis carrying the most prevalent mutation on the katG gene, S315T. All compounds were less cytotoxic than many drugs in clinical use with IC50 values after a 72 h challenge always higher than 25 µM. Additionally, all isoniazid derivatives studied exhibited stronger binding to human serum albumin than isoniazid itself, with dissociation constants in the order of 10-4-10-5 M as opposed to 10-3 M, respectively. This suggests that their transport and half-life in the blood stream are likely improved when compared to the parent compound. Furthermore, our results are a strong indication that the N' = C bond of the hydrazone derivatives of INH tested is essential for their enhanced activity against the mutant strain of M. tuberculosis in comparison to both their reduced counterparts and INH.

Hippocampal Cb2 receptors: an untold story.

The field of cannabinoid research has been receiving ever-growing interest. Ongoing debates worldwide about the legislation of medical cannabis further motivates research into cannabinoid function within the central nervous system (CNS). To date, two well-characterized cannabinoid receptors exist. While most research has investigated Cb1 receptors (Cb1Rs), Cb2 receptors (Cb2Rs) in the brain have started to attract considerable interest in recent years. With indisputable evidence showing the wide-distribution of Cb2Rs in the brain of different species, they are no longer considered just peripheral receptors. However, in contrast to Cb1Rs, the functionality of central Cb2Rs remains largely unexplored. Here we review recent studies on hippocampal Cb2Rs. While conflicting results about their function have been reported, we have made significant progress in understanding the involvement of Cb2Rs in modulating cellular properties and network excitability. Moreover, Cb2Rs have been shown to be expressed in different subregions of the hippocampus, challenging our prior understanding of the endocannabinoid system. Although more insight into their functional roles is necessary, we propose that targeting hippocampal Cb2Rs may offer novel therapies for diseases related to memory and adult neurogenesis deficits.

Encapsulating peritoneal sclerosis: from early diagnosis to successful kidney transplantation.

Encapsulating peritoneal sclerosis is an uncommon but serious complication of peritoneal dialysis. In most cases, the symptoms appear after peritoneal dialysis withdrawal, which hampers its diagnosis. We present the case of a 44-years-old Caucasian male who had been on peritoneal dialysis for 6 years and 3 months and was switched to hemodialysis due to ultrafiltration failure. During his last months on peritoneal dialysis, he developed anorexia and asthenia, which were initially attributed to dialysis inadequacy. After hemodialysis induction, the patient developed abdominal pain, increased abdominal volume, obstipation alternating with diarrhea, and weight loss. Computed tomography showed de novo ascites. A diagnosis of early encapsulating peritoneal sclerosis was considered, and treatment was promptly initiated with nutritional support, oral prednisolone, and tamoxifen for one year. The patient progressed with resolution of the symptoms. One month after the end of the treatment, he underwent a successful kidney transplant and remain without any major intercurrences. A high level of clinical suspicion is crucial for the early diagnosis of encapsulating peritoneal sclerosis as the disease can be fatal in advanced stages. This case highlights that with early treatment, kidney transplantation can be successfully performed after an episode of encapsulating peritoneal sclerosis.

Diazepam causes sedative rather than anxiolytic effects in C57BL/6J mice.

Diazepam has been broadly accepted as an anxiolytic drug and is often used as a positive control in behavioral experiments with mice. However, as opposed to this general assumption, the effect of diazepam on mouse behavior can be considered rather controversial from an evidence point of view. Here we revisit this issue by studying the effect of diazepam on a benchmark task in the preclinical anxiety literature: the elevated plus maze. We evaluated the minute-by-minute time-course of the diazepam effect along the 10 min of the task at three different doses (0.5, 1 and 2 mg/kg i.p. 30 min before the task) in female and male C57BL/6J mice. Furthermore, we contrasted the effects of diazepam with those of a selective serotoninergic reuptake inhibitor (paroxetine, 10 mg/kg i.p. 1 h before the task). Diazepam had no anxiolytic effect at any of the tested doses, and, at the highest dose, it impaired locomotor activity, likely due to sedation. Noteworthy, our results held true when examining male and female mice separately, when only examining the first 5 min of the task, and when animals were subjected to one hour of restrain-induced stress prior to diazepam treatment. In contrast, paroxetine significantly reduced anxiety-like behavior without inducing sedative effects. Our results therefore suggest that preclinical studies for screening new anxiolytic drugs should be cautious with diazepam use as a potential positive control.

Repeat and Relapsing Peritonitis Microbiological Trends and Outcomes: A 21-Year Single-Center Experience.

Peritonitis is a major peritoneal dialysis complication. Despite a high cure rate, relapsing and repeat peritonitis is associated with Tenckhoff catheter biofilm and multiple episodes of peritoneal damage. In relapsing peritonitis, prompt catheter removal is mandatory; otherwise, in repeat peritonitis, there is not a clear indication for catheter removal. It is questionable if the approach to removal should be different. There are few recent data on repeat and relapsing peritonitis microbiology and clinical outcomes since most studies are from the past decade. This study evaluates the microbiology, clinical outcomes, and impact of relapsing and repeat peritonitis on technique survival and the impact of catheter removal in development of further peritonitis episodes by the same microorganism. We developed a single-center retrospective study from 1998 to 2019 that compared repeat and relapsing peritonitis with a control group in terms of causative microorganisms, cure rate, catheter removal, and permanent and temporary transfer to hemodialysis. We also compared repeat and relapsing peritonitis clinical outcomes when Tenckhoff catheter was not removed. Comparing to the control group, the repeat/relapsing group had a higher cure rate (80.4% versus 74.5%, p=0.01) and lower rate of hospitalization (10.9% versus 27.7%, p=0.01). Technique survival was superior in the repeat/relapsing group (log rank = 4.5, p=0.03). Gram-positive peritonitis was more common in the repeat/relapsing group especially Streptococci viridans (43.5% versus 21.3%, p=0.01) and Gram-negatives in the control group (26.6% vs 9.0%, p=0.02). When the Tenckhoff catheter was not removed after a repeat episode, 58.6% developed a new repeat/relapsing episode versus 60.0% in the relapsing group. Although repeat and relapsing peritonitis have a higher cure rate, it leads to further episodes of peritonitis and consequent morbidity. When Tenckhoff catheter was not removed, the probability of another peritonitis episode by the same microorganism is similar in repeat and relapsing peritonitis.

Gastrointestinal and renal involvement in systemic vasculitis

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Gastrointestinal and renal involvement in systemic vasculitis.

Vasculitis can also present with GI or solid organ involvement. IgA and ANCA associated vasculitis are more likely to have GI involvement. A 56-year-old female was admitted to the ER due to nausea, vomiting, epigastric pain and fever. The patient had a medical history of acromegaly and chronic kidney disease of an undetermined etiology, elevated C-reactive protein and renal dysfunction. Abdominal-CT revealed duodenal parietal thickening and pancreatic head edema. On esophagogastroduodenoscopy (EGD), duodenal mucosa had a diffusely nodular aspect with ulcerated areas. The following differential diagnosis were made, infectious enteritis, Whipple disease, infiltrative disorder and GI vasculitis. After discussion between a multidisciplinary team of Gastroenterology and Nephrology, they decided to initiate oral glucocorticoids due to worsening of the renal function, which lead to the resolution of digestive symptoms and renal function stabilization. Myeloperoxidase antineutrophilic-cytoplasmic antibodies (MPO-ANCA) were subsequently positive and histology confirmed duodenal involvement by vasculitis. The patient was asymptomatic after 4-weeks, with endoscopic healing and renal function stabilization. GI involvement limited to the duodenum in the setting of ANCA-MPO vasculitis is a rare condition. Moreover, histopathologic confirmation of vasculitis in endoscopic biopsy samples is exceptional.

Effect of the aging of titanium and zirconia abutment surfaces on the viability, adhesion, and proliferation of cells and the adhesion of microorganisms.

STATEMENT OF PROBLEM: The longevity of dental implants depends on the maintenance of peri-implant tissue and absence of inflammation. How the physical-chemical properties intrinsic to each material over time can affect adhesion, given constant cell turnover and biofilm development, remains unclear. PURPOSE: The purpose of this in vitro study was to evaluate the influence of aging on the viability, adhesion, and proliferation of normal oral keratinocytes (Nok-si) and on the multispecies biofilm formation of Fusobacterium nucleatum (F. nucleatum), Porphyromonas gingivalis (P. gingivalis), and Streptococcus sanguinis (S. sanguinis). MATERIAL AND METHODS: Zirconia (ZrO2) and titanium (Ti) disks were analyzed by surface roughness, water contact angle, and X-ray diffraction before and after aging in an autoclave. The Nok-si cell viability was evaluated by using a 3-(4.5-dimethylthiazole-2-yl)2.5-diphenyl tetrazolium bromide assay (MTT), morphology by scanning electron microscopy (SEM), and proliferation and adhesion by using a confocal microscope. Multispecies biofilms were analyzed quantitatively by colony-forming units per milliliter (CFU/mL) and qualitatively by SEM. RESULTS: For Ti, the aging process affected the roughness and wettability. However, for ZrO2, the aging did not affect roughness but did affect wettability and the ratio of the tetragonal to monoclinic phase (P<.05). A significant difference was found in the bacterial growth for Ti (nonaged and aged) in relation to the control, and no differences were found in Ti before and after aging; however, ZrO2 had increased growth of microorganisms after aging. For ZrO2, a statistically significant difference was found between aged ZrO2 and the control (P<.001). CONCLUSIONS: The results indicate that, after the aging, Ti showed better cell adhesion and proliferation and lower biofilm adhesion than zirconia.

Recognition memory reconsolidation requires hippocampal Zif268.

Object recognition memory (ORM) serves to distinguish familiar items from novel ones. Reconsolidation is the process by which active memories are updated. The hippocampus is engaged in ORM reconsolidation through a mechanism involving induction of long-term potentiation (LTP). The transcription factor Zif268 is essential for hippocampal LTP maintenance and has been frequently associated with memory processes. However, its possible involvement in ORM reconsolidation has not been determined conclusively. Using Zif268 antisense oligonucleotides in combination with behavioural, biochemical and electrophysiological tools in rats, we found that hippocampal Zif268 is necessary to update ORM through reconsolidation but not to retrieve it or keep it stored. Our results also suggest that knocking down hippocampal Zif268 during ORM reconsolidation deletes the active recognition memory trace.

Alterações na antropometria e na qualidade de vida relacionada à saúde após um programa de exercícios aquáticos em crianças com sobrepeso e obesidade / Change on the anthropometric and health-related quality of life after aquatic exercise program in overweight or obesity children

O objetivo do estudo foi avaliar as alterações, após um programa de exercícios aquáticos, dos parâmetros antropométricos e de qualidade de vida relacionada à saúde (QVRS) em crianças com sobrepeso ou obesidade. Trata-se de um ensaio clínico não-randomizado e controlado realizado na cidade de Uberaba, Minas Gerais com participação de 33 crianças com média de idade de 9,10 ± 1,00 anos, de ambos os sexos. As crianças foram alocadas em grupo controle (GC, n = 21) e grupo experimental (GE, n = 12). O GE realizou 21 semanas de exercícios aquáticos de caráter aeróbio recreativo, 54 sessões de 60 minutos cada. No baseline e pós-intervenção, foram avaliados massa corporal, estatura, IMC e QVRS por meio do Questionário Pediátrico de Qualidade de Vida (Pedsql versão 4.0). Observou-se efeito significativo do tempo no aspecto emocional da QVRS relatada pelos filhos (p = 0,009), houve redução dos escores do GE e aumento nos escores do GC. Na dimensão atividade escolar houve tendência para interação tempo*grupo (p = 0,059), em que observamos redução dos escores no GE e aumento no GC após 21 semanas. Em relação à antropometria e QVRS relatada pelos pais, não foram observadas diferenças significativas em ambos os grupos. Em conclusão, houve alterações significativas na dimensão emocional relatado pelas crianças, porém, a intervenção não alterou significativamente a antropometria e demais dimensões da QVRS de crianças com sobrepeso ou obesidade

The aim of this study was to evaluate the changes in anthropometric parameters and health-related quality of life (HRQoL), post aquatic program intervention among overweight and obese children. This non-ran-domized controlled clinical trial was performed in Uberaba, Minas Gerais with 33 children, mean age of 9.10 ± 1.00 years, of both sex. Children were allocated in control group (CG; n = 21) and experimental group (EG; n = 12). The EG performed 21 weeks of the aerobic recreative aquatic exercise, 54 sessions each 60 minutes. At baseline and post intervention, body mass, height, BMI and the HRQoL by Pediatric Quality of life Inventory (Pedsql version 4.0) were assessed. A significant time effect in the emotional aspect to HRQL reported by children (p = 0.009) was observed, that is, there was a score reduction in EG and a score increase in CG. There was tendency to time*group interaction effect (p = 0.059) for the school activities dimension, with a score reduction in EG and score increase in CG after 21 weeks. No significant change was observed in the anthropometry or HRQL reported by parents in both groups. In conclusion, there was significant change in emotional dimension reported by children, however, the intervention did not significantly change the anthropometry and other HRQoL dimensions in overweight or obesity of children