Early Diabetic Nephropathy and Retinopathy in Patients with Type 1 Diabetes Mellitus Attending Sudan Childhood Diabetes Centre

Prevalence of nephropathy among patients with diabetes mellitus in Africa: a systematic review and meta-analysis

Background

Diabetic nephropathy (DN) is one of the most frequent microvascular consequences of diabetes, accounting for a significant portion of morbidity and mortality in diabetic patients in Africa. This study aims to report on the prevalence of nephropathy among patients with diabetes mellitus patients in Africa and the risk factors.

Methods

This systematic review was reported using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards, and the protocol was pre-registered in PROSPERO with the registration number CRD42024587467. The search was conducted across databases such as PubMed, Google Scholar, CINAHL and Scopus to retrieve studies published between January 2000 and August 2024. All statistical analyses were conducted using R software (version 4.4.2). The pooled prevalence of nephropathy in patients with diabetes was calculated with a 95% confidence interval (CI).

Results

Thirty-four (34) articles met the inclusion criteria. Only 28 studies were incorporated into the meta-analysis to determine the pooled prevalence of nephropathy among diabetes patients. The findings indicated a pooled prevalence of 21% (95%, CI: 16-28) of nephropathy among diabetes patients. Among type 1 and type 2 diabetes patients, the pooled prevalence of nephropathy is 46% (95%, CI: 18-77, I² = 98%) and 20% (95% CI: 14-27, I² = 98%), respectively. Weighted prevalence of 47%, 31%, 33% and 11% were reported in North Africa, Central Africa, South Africa and West Africa respectively. The result also showed that diabetes patients with hypertension are more than three times at risk of developing nephropathy compared to those without hypertension OR:3.46 (95% CI: 2.61-4.59).

Conclusion

The current study showed the prevalence of nephropathy with a significant association with hypertension among diabetic mellitus patients. Higher prevalence in North Africa is likely due to Western cultural impacts on dietary consumption.

Systematic Review Registration

https://www.crd.york.ac.uk/prospero/, identifier CRD42024587467.

Chronic Microvascular Complication of Type 1 Diabetes Mellitus and Its Predictors Among Children with Type 1 Diabetes Mellitus in Ethiopia; A Single Center Experience: Ambi Directional Cohort Study

Introduction

Type 1 diabetes mellitus is the most common pediatric endocrine disorder. Poor glycemic control in diabetes mellitus can result in microvascular complications (retinopathy, neuropathy, and nephropathy). There is no study done in our setting either about prevalence of pediatric type 1 diabetes mellitus or chronic microvascular complication among these patients, which gap this study is expected to fill.

Objective

This study aimed to assess the risk and predictors of chronic microvascular complication of type 1 diabetes mellitus among children with diabetes at Haramaya University Hiwot Fana Compressive Specialized Hospital from September 10, 2021 to January 30, 2023.

Methods

A hospital-based Ambi directional cohort study was conducted. Survival data are described by follow-up time and Kaplan-Meier graph. To determine predictors associated with chronic microvascular complication we used a Poisson regression optimal model selected using the information criterion. All associations are tested at the 95% confidence level and a reported IRR P-value less than 0.05 is declared as a significant association between variables.

Results

A total of 124 children with type 1 diabetes mellitus were followed with total 407.5 years risk time. The overall incidence rate of chronic microvascular complication was 83 per 1000 population per year (95% CI: 59-116). The median time for detection of microvascular complication was 7 years after diagnosis. Being male with IRR 1.71 (95% CI: 0. 0.81-3.56), being at pubertal age IRR 1.91 (95% CI: 1.05-3.48), longer diabetes mellitus duration IRR 1.13 (95% CI: 1.07-1.28), and poor glycemic control IRR 1.50 (95% CI: 0.46-4.97) were found to be at higher risk for chronic microvascular complication.

Conclusion

There was high incidence of chronic microvascular complication of diabetes mellitus. Being pubertal age group and more than 3 years duration after diagnosis had statistically significant association with complication.

The role of oxidative stress in the pathogenesis of ocular diseases: an overview

Dysregulation of oxidative stress serves as a pivotal predisposing or exacerbating factor in the intricate development of numerous pathological processes and diseases. In recent years, substantial evidence has illuminated the crucial role of reactive oxygen species (ROS) in many fundamental cellular functions, including proliferation, inflammation, apoptosis, and gene expression. Notably, producing free radicals within ROS profoundly impacts a wide range of biomolecules, such as proteins and DNA, instigating cellular damage and impairing vital cellular functions. Consequently, oxidative stress emerges as a closely intertwined factor across diverse disease spectra. Remarkably, the pathogenesis of several eye diseases, including age-related macular degeneration, glaucoma, and diabetic retinopathy, manifests an intrinsic association with oxidative stress. In this comprehensive review, we briefly summarize the recent progress in elucidating the intricate role of oxidative stress in the development of ophthalmic diseases, shedding light on potential therapeutic avenues and future research directions.

Prevalence and Risk Factors of Diabetic Nephropathy Among Saudi Type-1 Diabetic Patients in Taif City, Saudi Arabia

Purpose

We investigated the prevalence and associated risk factors of DNP in T1DM patients in Taif city, Saudi Arabia, where the renal diseases are prevalent. The incidence of diabetic nephropathy (DNP) is increasing in Saudi Arabia, and the country is also ranked 4th in terms of the number of diagnosed type-1 diabetes (T1DM) patients.

Patients and Methods

The retrospective cohort study was conducted with type-1 diabetes patients registered at King Abdulaziz Specialist Hospital in Taif, Saudi Arabia. A total of 198 patients (aged > 18 years), had T1DM for more than 5 years with documented albuminuria; albumin-creatinine ratio (ACR) ≥30 mg/g creatinine in two of three urine samples or estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m2, were included in the study. Patients' demographic and laboratory data were collected from medical records. A regression analysis model was used to identify risk factors for DNP. Statistical significance was set at P < 0.05.

Results

The overall prevalence of DNP was 23.7% in our study group, with 8% having low eGFR alone, 20.71% having positive ACR and 6.22% having both positive ACR and low eGFR. A statistically significant correlation between DNP and risk factors was found for uncontrolled and longer duration of T1DM, elevated ACR, and hypertension (P < 0.05). No statistical significance was found for age, sex, or body mass index (BMI).

Conclusion

The prevalence of DNP in T1DM patients in Taif city was higher (23.7%) than the pooled average prevalence in Saudi Arabia (20.59%). Patients' education regarding glycemic and blood pressure control could reduce the burden.

Correlation of C-Peptide With Complications Observed in Children and Adolescents With Type 1 Diabetes in Tanzania: A Cross-Sectional Survey

Type 1 diabetes mellitus (T1DM) complications corelate with C-peptide levels. However, the C-Peptide role has not been explored in resource limited countries. This study explored the relationship between C-peptide and complications. A cross-sectional study involving participants aged 0 to 25 years with T1DM in Dar es salaam Tanzania, between 2021 and 2022 was done. Diabetes nephropathy and retinopathy were assessed. About 281 (92.4%) participants were screened, 144 (51.2%) were females. Mean age was 19 ± 6 years. Majority 175 (62.3%) had poor glycemic control (HbA1c) > 10%, and low C-Peptide level 201 (71.5%). Retinopathy was 11.7% and risk for nephropathy was 41.3%. About 13.4% and 41.8% with low C peptide had Retinopathy and high-risk nephropathy respectively. Age at diagnosis, poor glycemic control, low c peptide and duration of diabetes were associated with complications. Further prospective studies are needed to capture when complications set in, so to have better strategies to prevent complications.

Concurrent Presentation of Diabetic Nephropathy and Type 1 Diabetes Mellitus in a Pediatric Patient

Diabetic nephropathy (DN) is the most consequential and longstanding microvascular complication of type 1 diabetes mellitus (T1DM) and the most common cause for renal replacement therapy throughout the world. The most important risk factor for DN includes poor glycemic control. We present a rare case where biopsy-proven grade 3 DN had a concurrent presentation at the time of diagnosis of T1DM in a 12-year-old female child. This earlier than expected DN noted in this patient raises the question regarding the need for earlier surveillance for DN in children.

Prevalence and Factors Associated with Microalbuminuria in Pediatric Patients with Type 1 Diabetes Mellitus at a Large Tertiary-Level Hospital in Botswana

INTRODUCTION

Microalbuminuria is considered the earliest sign of diabetic nephropathy among patients with type 1 diabetes mellitus (T1DM). The prevalence of microalbuminuria among African children with T1DM is reported to be high, yet its prevalence and population-specific risk factors in Botswana are not known.

AIM

This study aimed to determine the prevalence of microalbuminuria among children and young adults with T1DM in Botswana and identify factors associated with microalbuminuria in this population.

METHODS

A retrospective cross-sectional study was conducted on 127 T1DM patients aged <24 years followed at a pediatric endocrinology clinic in Botswana from 2010 to 2017. Clinical, laboratory, and demographic data were collected using chart review and patient surveys. Descriptive statistics were reported as mean and standard deviation for continuous variables, and frequency and percentage for categorical variables. Prevalence of microalbuminuria was calculated as a simple proportion. Group comparison was done using two-sample independent t-test, X ²-test, or Fisher's exact test and logistic regression to assess for associations. Level of significance was set at p<0.05.

RESULTS

There were a total of 71 (55.9%) females. The mean age was 18.7 (±5) years and mean duration of T1DM was 6.6 (±4.6) years. Most study participants were of African descent. The prevalence of microalbuminuria was 28.3%. Group comparison revealed gender (p= 0.040), duration of diabetes (p= 0.002), systolic blood pressure (p=0.003), baseline glycated hemoglobin (HbA1c) (p=0.009) and Tanner's stage (p=008) to be significantly associated with microalbuminuria. On binary logistic regression, only gender (p=0.039) and baseline HbA1c (p=0.039) were independently associated with the presences of microalbuminuria.

CONCLUSION

This study identified a high prevalence of microalbuminuria among children and young adults with T1DM in Botswana and reaffirms the importance of early detection, glycemic control, and regular screening to prevent diabetic nephropathy.