Publications by authors named "Kazuo Izumi"

Aims: The utilization of long-term effect of internet of things (IoT) on glycemic control is controversial. This trial aimed to examine the effect of an IoT-based approach for type 2 diabetes.

Materials And Methods: This randomized controlled trial enrolled 1,159 adults aged 20-74 years with type 2 diabetes with a HbA1c of 6.

View Article and Find Full Text PDF
Article Synopsis
  • A study was conducted in Japan to compare the effectiveness of tocilizumab, a therapeutic agent for COVID-19 pneumonia, against the standard of care (SOC) for severe cases.
  • The research utilized data from two databases, analyzing the time to discharge and other clinical outcomes between the tocilizumab and SOC groups.
  • Results indicated a slightly shorter median discharge time for tocilizumab (15 days) compared to SOC (16 days), but no significant difference was found in other clinical improvement metrics.
View Article and Find Full Text PDF

Aims/introduction: Non-attendance from regular medical care is a major problem in diabetes patients. This study aimed to examine the impact of a multifaceted lifestyle intervention by face-to-face approach (FFA) on non-attendance from regular medical care in comparison with that by telephone from the technical support center (TSC).

Materials And Methods: This was secondary analysis from a 1-year, prospective, cluster randomized, intervention study.

View Article and Find Full Text PDF
Article Synopsis
  • A 40-year-old Japanese man diagnosed with HIV at 29 developed Graves' disease at 35 and slowly progressive type 1 diabetes at 38, indicating an autoimmune response.
  • After starting antiretroviral treatment, tests showed that the autoimmune antibodies related to his conditions were positively correlated, suggesting that both diseases may have emerged due to the immune-inflammatory reconstitution syndrome.
View Article and Find Full Text PDF

Introduction: This study explored the psychological and situational factors affecting dropout from regular visits to diabetes care using data obtained from the Japan Diabetes Outcome Intervention Trial 2 (J-DOIT2) Large-scale Trial (LT).

Methods: A total of 2,031 patients with type 2 diabetes who participated in the J-DOIT2-LT were included in the analysis. Responses to a baseline questionnaire with 17 items asking about the experience of dropout from regular visits in diabetes care and its reasons were analyzed using principal component analysis, and factors related to dropout were extracted.

View Article and Find Full Text PDF

Introduction: Several randomized controlled trials have compared the effectiveness of favipiravir with that of placebo. However, evidence regarding its effect on nonsevere, early-stage coronavirus disease 2019 (COVID-19) remains insufficient.

Methods: We used the COVID-19 Registry Japan, a nationwide registry of inpatients with COVID-19, for evaluating the effectiveness of favipiravir on patients with nonsevere, early-stage COVID-19.

View Article and Find Full Text PDF

Background: Before widespread coronavirus disease (COVID-19) vaccinations, Japan experienced three COVID-19 epidemic waves. This study aimed to evaluate the characteristics of hospitalised COVID-19 patients and reveal temporal changes.

Methods: This study included 33,554 hospitalised patients with COVID-19 from 553 healthcare facilities.

View Article and Find Full Text PDF

Aims: Workplace demands, support, and relationships differ according to employment status (e.g., employment that is full-time, part-time, or self-employed) and may lead to unequal opportunities to keep diabetic appointments.

View Article and Find Full Text PDF

Objectives: To evaluate the effectiveness of remdesivir in the early stage of nonsevere COVID-19. Although several randomized controlled trials have compared the effectiveness of remdesivir with that of a placebo, there is limited evidence regarding its effect in the early stage of nonsevere COVID-19 cases.

Methods: We evaluated the effectiveness of remdesivir in the early stage of nonsevere COVID-19 using the COVID-19 Registry Japan, a nationwide registry of hospitalized patients with COVID-19 in Japan.

View Article and Find Full Text PDF

Objectives: To determine whether anticoagulation therapy improves outcomes in patients with coronavirus disease 2019 (COVID-19) in Japan given their lower risk of thrombosis compared with Western cohorts.

Methods: The efficacy of anticoagulation therapy in hospitalized patients with COVID-19 was evaluated using a nationwide registry: the COVID-19 Registry Japan. The inverse probability of weight treatment method was used to adjust for baseline confounders in the anticoagulation and non-anticoagulation groups.

View Article and Find Full Text PDF
Article Synopsis
  • The study assessed the effectiveness of a telephone support program with telemonitoring on promoting healthy eating and exercise among adults with prediabetes.
  • Using data from a trial in Japan with over 2,600 participants, researchers compared the outcomes between those who received the intervention and a self-directed control group.
  • Results indicated that the intervention significantly improved healthy eating behaviors but had a less impactful effect on exercise habits, and it notably reduced fasting plasma glucose levels in participants who were contemplating lifestyle changes.
View Article and Find Full Text PDF

Background: There is limited understanding of the characteristics of patients with coronavirus disease 2019 (COVID-19) requiring hospitalization in Japan.

Methods: This study included 2638 cases enrolled from 227 healthcare facilities that participated in the COVID-19 Registry Japan (COVIREGI-JP). The inclusion criteria for enrollment of a case in COVIREGI-JP are both (1) a positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) test and (2) inpatient treatment at a healthcare facility.

View Article and Find Full Text PDF

Objectives: Frequent self-weighing is associated with weight loss and maintenance, but the relationship between frequent self-weighing and the incidence of type 2 diabetes (T2D) remains unclear. The study aim was to examine the association between self-weighing frequency and the incidence of T2D in people with impaired fasting glucose (IFG).

Results: We tested the hypothesis that self-weighing frequency and the incidence of T2D are associated in 2607 people with IFG (1240 in the intervention arm; 1367 in the self-directed control arm).

View Article and Find Full Text PDF

Objectives: Using annual health check-up data, the aim of this study was to identify target populations for lifestyle interventions to effectively prevent diabetes in a real-world setting.

Methods: The Japan Diabetes Outcome Intervention Trial-1, a prospective, cluster-randomized controlled trial, was launched to test if year-long telephone-delivered lifestyle support by health professionals can prevent the development of type 2 diabetes (T2D) in people with impaired fasting glucose (IFG) identified at health check-ups. A total of 2607 participants aged 20-65 years with IFG were randomized to an intervention arm (n = 1240) or a control arm (n = 1367).

View Article and Find Full Text PDF

We aimed to assess whether a triple-faceted intervention program administered in the primary care setting could decrease the risk of insufficient adherence to primary care physician (PCP) appointments among this patient population. We conducted a cluster-randomized controlled study to assess the effects of a 1-year intervention. The primary outcome was insufficient adherence to regular PCP attendance for diabetes treatment, defined as failure to visit a PCP within 2 months of an original appointment date.

View Article and Find Full Text PDF

Evidence of the long-term benefits of telephone-delivered lifestyle interventions is limited. This study investigated the ability of telephone-delivered lifestyle intervention to reduce the incidence of metabolic syndrome (MetS) in subjects diagnosed with impaired fasting glucose (IFG) during health checkups. Our subjects were participants in the Japan Diabetes Outcome Intervention Trial-1 (J-DOIT1), a prospective, cluster-randomized controlled trial designed to investigate whether goal-focused lifestyle coaching over the telephone can effectively reduce the incidence of type 2 diabetes development in high-risk individuals in a primary health care setting.

View Article and Find Full Text PDF

Background: Limited evidence suggests that multifactorial interventions for control of glucose, blood pressure, and lipids reduce macrovascular complications and mortality in patients with type 2 diabetes. However, safe and effective treatment targets for these risk factors have not been determined for such interventions.

Methods: In this multicentre, open-label, randomised, parallel-group trial, undertaken at 81 clinical sites in Japan, we randomly assigned (1:1) patients with type 2 diabetes aged 45-69 years with hypertension, dyslipidaemia, or both, and an HbA of 6·9% (52·0 mmol/mol) or higher, to receive conventional therapy for glucose, blood pressure, and lipid control (targets: HbA <6·9% [52·0 mmol/mol], blood pressure <130/80 mm Hg, LDL cholesterol <120 mg/dL [or 100 mg/dL in patients with a history of coronary artery disease]) or intensive therapy (HbA <6·2% [44·3 mmol/mol], blood pressure <120/75 mm Hg, LDL cholesterol <80 mg/dL [or 70 mg/dL in patients with a history of coronary artery disease]).

View Article and Find Full Text PDF

We evaluated the associations of risk perception, self-efficacy, and trust with two health promotion behaviors (food habits and exercise) and depressive mood. Diabetic patients aged between 40 and 64 ( = 1195) were included in the analyses. Risk perception worsened behavioral changes in terms of food habits and depression, whereas self-efficacy and trust improved food habits, exercise, and depression; trust improved exercise and depression.

View Article and Find Full Text PDF

Japan has been facing challenges relating to specifically defined rare diseases, called Nan-Byo in Japanese (literally 'difficult'+'illness'), and has already taken measures for them since 1972. This governmental support has surely benefited Nan-Byo patients; however, those suffering from medically unidentified conditions do not fall into this scheme and thus still confront difficulty in obtaining an examination, a diagnosis, and a treatment. To identify such rare and often undiagnosed diseases, we must integrate systematic diagnosis by medical experts with phenotypic and genetic data matching.

View Article and Find Full Text PDF

Aims/introduction: To analyze the association between the duration of diabetes and selection of diabetes therapy in a large database of Japanese patients with type 2 diabetes.

Materials And Methods: We used the data of 5,844 patients with type 2 diabetes to evaluate the association between the duration of diabetes and types of diabetes therapy. The logistic regression model was used to analyze the association between duration of diabetes and selection of diabetes therapy, and restricted cubic spline curves were used to represent the schematic association.

View Article and Find Full Text PDF

Objective: Multifactorial intervention including the management of levels of blood glucose (BG), blood pressure (BP), and lipids has been suggested to decrease cardiovascular disease (CVD) risk. However, the target ideal and feasible levels for these individual parameters have not been fully evaluated. In this study, we examine the hypothesis that stricter control compared with the current targets in the Japanese guideline for BG, BP, and lipids could efficiently and safely reduce CVD risk.

View Article and Find Full Text PDF

The JDCP study is a large-scale, prospective observational study designed to elucidate risk factors for diabetic complications as they become manifest in Japanese type 1 and 2 diabetic patients in the course of their observation and follow-up. Of the 6338 patients enrolled in the study, all patients with type 1 diabetes ( = 394) were examined for baseline clinical characteristics, which were summarized as follows: men,  = 174 (44 %); mean age (men/women), 55.3/56.

View Article and Find Full Text PDF