scholarly journals tRNAleu A3243G Gene Mutation of Mitochondrial DNA as a Risk Factor for Diabetic Retinopathy in Type 2 Diabetes Mellitus in Bali

2022 ◽  
Vol 9 (1) ◽  
pp. 182-188
Author(s):  
Aprilla Berlianti ◽  
I Wayan Surudarma ◽  
Ida Ayu Dewi Wiryanthini

Introduction: Diabetic retinopathy is one of the chronic complications in patients with diabetes mellitus caused by progressive microangiopathy. Various types of risk factors can affect the occurrence of diabetic retinopathy, one of which is mitochondrial DNA mutations in the tRNAleu A3243G gene that is common in T2DM. This study was conducted with the aim to identify whether the mutation of the tRNAleu A3243G gene acts as a risk factor for diabetic retinopathy in T2DM patients in Bali. Material and Methods: This study used a case control design with 35 T2DM patients with diabetic retinopathy and 35 T2DM patients without diabetic retinopathy. The techniques used to identify these mutations are PCR and DNA sequencing. Results: Based on the results obtained, no mutations were found in the tRNAleu A3243G gene in the entire sample. Therefore, the relationship analysis of the two variables cannot be identified. Conclusions: Mutations of the tRNAleu A3243G gene that were not successfully identified in this study can be concluded not play a role as a risk factor for diabetic retinopathy. Keywords: Diabetic Retinopathy, Diabetes Mellitus, tRNAleu Gene Mutation, Mitochondrial DNA.

2010 ◽  
Vol 3 (1) ◽  
Author(s):  
Irini P Chatziralli ◽  
Theodoros N Sergentanis ◽  
Petros Keryttopoulos ◽  
Nikolaos Vatkalis ◽  
Antonis Agorastos ◽  
...  

2020 ◽  
Vol 49 (2) ◽  
Author(s):  
Enisa Karić ◽  
Zumreta Kušljugić ◽  
Enisa Ramić ◽  
Olivera Batić- Mujanović ◽  
Amila Bajraktarević ◽  
...  

Introduction:The study evaluated of microalbuminuria as a predictor of heart failure in patients with diabetes mellitus type 2.Materials and methods:The prospective study conducted in a period of time from 01-Feb-2007 to 01-Feb-2010.The study included 100 patients with type 2 diabetes, who had diabetes longer than 5 years. All subjects (average age 66 ± 10 years, 33% male, 67% female) were tested for the presence of microalbuminuria, and 50 patients had microalbuminuria. The second group comprised 50 patients without of microalbuminuria with diabetes mellitus type 2.Results:In the patients with microalbuminuria and diabetes mellitus were found 22% of heart failure and 6% in the second group. Average time to the occurance of heart failure in the first group was 32,5 months, in the second group was 35,3 months.Conclusions:The results show that microalbuminuria is an independent risk factor for heart failure in patients with diabetes mellitus type 2 and microalbuminuria. Patients without microalbuminuria had 3,7 less likely to development heart failure compared to patients with microalbuminuria and diabetes mellitus.


Medicina ◽  
2020 ◽  
Vol 56 (12) ◽  
pp. 658
Author(s):  
Ieva Jurgeleviciene ◽  
Daiva Stanislovaitiene ◽  
Vacis Tatarunas ◽  
Marius Jurgelevicius ◽  
Dalia Zaliuniene

Background and objectives: Glycation occurs in a variety of human tissues and organs. Knowledge about the relationship between predictive biochemical factors such as absorption of glycated nail proteins and severity of type 2 diabetes mellitus (DM) and diabetic retinopathy (DR) remains limited. Materials and Methods: The study group consisted of patients with type 2 DM and DR (n = 32) and a control group (n = 28). Each patient underwent a comprehensive ophthalmic examination. The glycation process in nail clippings was evaluated in stages of in vitro glycation and deglycation stages. ATR–FTIR spectroscopy was used to calculate the infrared absorption in the region of interest. The absorption of solutions with nail clippings was evaluated by NanoDrop spectrophotometry. Absorption spectra differences before and after the exposure to fructosamine 3-kinase were compared between DM patients with DR and the control group. Results: The absorption of glycated nail protein greater than 83.00% increased the chance of developing DM and DR (OR = 15.909, 95% CI 3.914–64.660, p < 0.001). Absorption of glycated nail protein by ATR–FTIR spectroscopy in patients with DM and DR in vitro glycation was statistically significantly higher than in the control group; also absorption of solution with nails by NanoDrop spectroscopy was statistically significantly higher than in controls in vitro glycation and in vitro deglycation. After exposure to fructosamine 3-kinase, absorption of nail protein in DM + severe/proliferative DR group was statistically significantly lower in comparison with DM + mild/moderate group DR. Conclusions: Evaluation of glycated nail protein could be applied to evaluate the risk of having DM and for long-term observation of DM control.


Author(s):  
Dr Kalpana Singh ◽  
Dr Dhiraj Balwir ◽  
Dr Jeetendra Singh ◽  
Dr Ruchita Raikar

Aim: To study the relationship between severity of diabetic retinopathy (PDR or NPDR) and systemic complications of diabetes mellitus such as Neuropathy, Nephropathy or Cardiovascular manifestation as hypertension. Methods and Materials: This prospective observational study of 100 patients suffering from diabetic retinopathy. Such patients were recruited as a part of the study and further examined for any other systemic abnormality as neuropathy, nephropathy or hypertension. Statistical Analysis: Chi square test, univariate and multivariate logistic regression analysis was performed. P value < 0.05 was taken as significant. Results: Male: Female ratio of presence of diabetic retinopathy was 2.13: 1. The rate of proliferative diabetic retinopathy (PDR) was 1.47 % in persons who had diabetes for less than 5 years to 7.35 % in persons who had diabetes more than 15 years. In our study, it was seen that nephropathy was present in 35.71 % cases with PDR as compared to 8.93% of cases with Non proliferative diabetic retinopathy (NPDR). Conclusion: Our study showed that there is a significant correlation between severity of retinopathy and duration in type 2 Diabetes mellitus patients. Maximum number of patients with Diabetes mellitus having cardiovascular involvement, had hypertension (68%).In patients suffering from neuropathy as a complication of DM, maximum number of patients had diabetic foot (56%).It was seen that the severity of diabetic retinopathy had some association with presence of nephropathy. Also it can be postulated that patients with severe NPDR and PDR have high risk of developing nephropathy than patients suffering with mild and moderate NPDR. Hence it can be recommended that all patients of diabetes mellitus suffering from clinically significant neuropathy, nephropathy or hypertension as a complication of diabetes should always be screened for presence of retinopathy. Further studies with larger sample size are to be conducted to further look into this association. Keywords: Diabetic retinopathy, Diabetic nephropathy, diabetic neuropathy, complications


2018 ◽  
Vol 15 (14) ◽  
pp. 1277-1282 ◽  
Author(s):  
Blanka Klimova ◽  
Kamil Kuca ◽  
Petra Maresova

The incidence of both diabetes and Alzheimer’s disease (AD) is increasing and is becoming a social and economic threat worldwide. Recent research studies indicate that both diseases share some pathophysiological features and that specifically, Type 2 Diabetes Mellitus (T2DM) is a risk factor of Alzheimer’s disease. The aim of this study is to explore the relationship between diabetes mellitus and AD, explore the efficacy of selected drugs on patients with diabetes and AD, and compare the relative risk of diabetes for Alzheimer’s disease within different clinical studies. The method of literature search in several acknowledged databases such as Web of Science, Elsevier Science Direct, PubMed and Scopus in the period from 2000 to 2015 for the following keywords: “Alzheimer’s AND disease AND diabetes AND mellitus” was used. The identified studies were divided into two basic groups, based on their focus: efficacy of the selected drugs on patients suffering from AD and diabetes, and a link between diabetes and AD; as diabetes is seen as a risk factor of AD. The findings of this study confirm that there is a close and direct link between diabetes and AD, which indicates that there is a need for early diagnosis of metabolic syndrome, insulin resistance, and T2DM. In fact, the reviewed clinical trials have proved an increase in the risk of AD. However, the values of this risk are relatively low. The results also illustrate that both pharmacological (e.g., the antidiabetic drugs together with insulin dosing) and nonpharmacological (e.g., being intensively engaged in physical activities) treatments can have a positive effect. The results of this study confirm that diabetes and AD are not independent disorders since they share some common pathophysiological mechanisms. In addition, more clinical randomized control trials are needed to explore the efficacy of both pharmacological and non-pharmacological approaches to the treatment of T2DM and AD.


2020 ◽  
Vol 10 (4) ◽  
pp. 282-286
Author(s):  
Mashhood Farooq ◽  
Syed Inamullah ◽  
Shama Mashhood ◽  
Mahmood Rana ◽  
Muhammad Fahim

Objective: To find a relationship between serum level of vitamin D with diabetic retinopathy and hearing loss in patients with diabetes mellitus type2. Study design and setting: This cross-sectional study was carried out at Ophthalmology, ENT and family physician Outpatient clinic of Mohsin Consultant Clinic Federal B Area, Karachi from study was April 2019 to December 2019. Methodology: Total 181 eligible type 2 diabetes mellitus patients. Complete ophthalmological, ENT and physical evaluation was carried out. Retinopathy and hearing status were recorded and were compared to serum 25-OH Vitamin D levels to find any association. SPSS version 23.0 was used to analyze the data. Results: Mean age of participants were found to be 60.56±7.3 (SD). When diabetic retinopathy status and hearing status was compared, non-proliferative diabetic retinopathy patients with normal hearing were 24(42.1%), with mild hearing 32(56.1%) and only 1(1.8%) with moderate-severe hearing loss was observed with P-value of <0.0001. Retinopathy status was compared with vitamin D levels. Insufficiency was seen in 14(38.9%) non-proliferative diabetic retinopathy, 2(5.6%) proliferative diabetic retinopathy patients and deficiency level was found in 33(32.7%) non-proliferative diabetic retinopathy and 15(14.9%) proliferative diabetic retinopathy patients. Level of vitamin D was compared to DR and HL status. Significantly low level of vitamin D was found with increasing severity of DR and HL with P-value <0.0001. Conclusions: Low level of vitamin D was associated with the severity of diabetic retinopathy and hearing loss in patients suffering from diabetes mellitus type2


2021 ◽  
Vol 8 (12) ◽  
pp. 1-6
Author(s):  
Astri Meliana ◽  
Desak Made Wihandani ◽  
Ni Nyoman Ayu Dewi

Introduction: Diabetic retinopathy (DR) is a microvascular disorder of the retina caused by hyperglycemia in the blood vessels and is the most common complication in the eye due to diabetes mellitus (DM). The aim of this study was to determine the VEGF -460C/T gene polymorphism as a risk factor for diabetic retinopathy in T2DM patients in Bali. Materials and Methods: The design of this study was case-control with 27 cases of type 2 DM with DR and 29 cases without RD as controls. The VEGF-460C/T polymorphism in DNA was detected using PCR and DNA sequencing at rs833061 to see the distribution of the C/T allele variation. Data were analyzed using chi-square test. Results: Based on bivariate analysis comparing homozygous TT genotype variants, heterozygous CT and wild-type CC in this study, no significant relationship was found with the incidence of DR (p=0.742). Conclusion: Polymorphism of the VEGF-460C/T gene (rs833061) can be concluded as an irrelevant factor with the risk of developing DR in type 2 diabetes mellitus patients in Bali. Keywords: VEGF -460C/T, Diabetes Mellitus, Polymorphism, Risk Factors.


2020 ◽  
Vol 7 (48) ◽  
pp. 2806-2810
Author(s):  
Niya Babu ◽  
Nima Teresa Andrew ◽  
Mercy Paul ◽  
Chakkalackal Varkey Anthrayose ◽  
Anchitha Meenu Rajeev ◽  
...  

BACKGROUND Diabetes mellitus (DM) is a major cause of avoidable blindness in the developing and the developed countries. Diabetic patients have 25 times more chance of becoming blind than the non-diabetics.1 According to the WHO, the number of people in India affected with Diabetes Mellitus in the year 2000 was 31.7 million which is estimated to rise to 79.4 million by 2030, which would be higher than any other country in the world. 75 percent of all Type 2 diabetics and almost all Type 1 diabetics are expected to develop diabetic retinopathy (DR) over a period of time.2 Diabetic dermopathy or shin spots are the commonest dermatological manifestation in patients with Diabetes Mellitus. It is also known as pigmented pretibial patches, spotted leg syndrome or diabetic dermangiopathy.3 Both diabetic retinopathy and dermopathy are manifestations of diabetic microangiopathy. We wanted to study the association between diabetic retinopathy and diabetic dermopathy. METHODS 182 patients (between 40 - 70 years of age) having diabetes mellitus for at least five years were included in the study and were examined for retinal changes and skin changes. The study period was six months. RESULTS Of the 182 diabetic patients included in this study, 106 (58.2 %) had diabetic retinopathy. Shin spots were seen in 158 cases (86.8 %). 100 (94.3 %) cases with diabetic retinopathy had shin spots. The mean duration of diabetes mellitus in patients with diabetic retinopathy was 11.85 years and it was 8.16 years in those without diabetic retinopathy. The mean duration of diabetes mellitus in patients with shin spots was 14.88 years and it was 10.70 years in those without shin spots. CONCLUSIONS There is significant association between diabetic retinopathy and diabetic dermopathy. KEYWORDS Diabetic Retinopathy, Shin Spots, Diabetic Dermopathy


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