Publications by authors named "R Nisihara"

Background: Inflammatory bowel diseases such as Crohn's disease and ulcerative colitis are influenced by environmental and immunological factors and may differ according to the patient's sex.

Objective: The objective was to study the differences in the clinical profile of a Brazilian sample of inflammatory bowel disease patients according to sex.

Methods: Retrospective study with chart review of 158 inflammatory bowel disease patients (43 with Crohn's disease and 115 with ulcerative colitis) from a single university hospital in southern Brazil.

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Article Synopsis
  • Gastrointestinal intolerance is prevalent among rheumatoid arthritis patients using methotrexate, with 55.7% experiencing symptoms, primarily nausea and pain after taking the drug.
  • The study identified factors associated with intolerance including afro-descendant background, existing fibromyalgia, and the use of glucocorticoids and Jak inhibitors.
  • Logistic regression revealed that using glucocorticoids significantly increased the likelihood of methotrexate intolerance, while adherence to methotrexate was generally moderate.
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Objective: To describe cases of acute kidney injury (AKI) in children diagnosed with COVID-19, associated risk factors, clinical aspects and outcome of cases.

Methods: Retrospective study, carried out in a pediatric hospital between March 2020 and September 2021, with patients with COVID-19 who were diagnosed with AKI, studying information present in medical records such as comorbidities, age, gender and use of nephrotoxic medications.

Results: We studied 40 cases, and male individuals were significantly more affected (62.

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Background: Routine screening for viral infections at blood donation is important to avoid transfusion-transmitted infections. It also offers an opportunity to detect an asymptomatic infection.

Objective: To study changes in serology positivity for viral infections (B and C hepatitis, HTLV-1/2, and HIV) at blood donation in a blood bank from Southern Brazil, comparing two periods of 5 years: the period from 2013 to 2017 with the period from 2018 to 2022.

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Background: Low bone mass density (BMD) is an extraintestinal finding in celiac disease (CD). This may result in bone fractures leading to loss in quality of life.

Objective: To assess BMD in male CD patients at diagnosis according to the patient's age.

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