9 results on '"Jung-Fu Chen"'
Search Results
2. Mitochondrial haplogroups have a better correlation to insulin requirement than nuclear genetic variants for type 2 diabetes mellitus in Taiwanese individuals
- Author
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Feng‐Chih Shen, Shao‐Wen Weng, Meng‐Han Tsai, Yu‐Jih Su, Sung‐Chou Li, Shun‐Jen Chang, Jung‐Fu Chen, Yen‐Hsiang Chang, Chia‐Wei Liou, Tsu‐Kung Lin, Jiin‐Haur Chuang, Ching‐Yi Lin, and Pei‐Wen Wang
- Subjects
Diabetes ,Insulin ,Mitochondria ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
ABSTRACT Aims/Introduction Identifying diabetes‐susceptible genetic variants will help to provide personalized therapy for the management of type 2 diabetes. Previous studies have reported a genetic risk score (GRS), computed by the sum of nuclear DNA (nDNA) risk alleles, that may predict the future requirement for insulin therapy. Although mitochondrial dysfunction has a close association with insulin resistance (IR), there are few studies investigating whether genetic variants of mitochondrial DNA (mtDNA) will affect the clinical characteristics of type 2 diabetes. Materials and Methods Mitochondrial haplogroups were determined using mtDNA whole genome next generation sequencing and 13 single nucleotide polymorphisms (SNPs) in nDNA susceptibility loci of 13 genes in 604 Taiwanese subjects with type 2 diabetes. A GRS of nDNA was computed by summation of the number of risk alleles. The correlation between the mtDNA haplogroup and the clinical characteristics of type 2 diabetes was assessed by logistic regression analysis. The results were compared with the GRS subgroups for the risk of insulin requirement. Results Mitochondrial haplogroups modulate the clinical characteristics of type 2 diabetes, in which patients harboring haplogroup D4, compared with those harboring non‐D4 haplotypes, were less prone to require insulin treatment, after adjusting for age, gender, and diabetes duration. However, there was no association between insulin requirement and GRS calculated from nuclear genetic variants. Conclusions Mitochondrial haplogroups, but not nuclear genetic variants, have a better association with the insulin requirement. The results highlight the role of mitochondria in the management of common metabolic diseases.
- Published
- 2022
- Full Text
- View/download PDF
3. Feasibility of combining heart rate variability and electrochemical skin conductance as screening and severity evaluation of cardiovascular autonomic neuropathy in type 2 diabetes
- Author
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Yun‐Ru Lai, Chih‐Cheng Huang, Ben‐Chung Cheng, Nai‐Wen Tsai, Wen‐Chan Chiu, Hsueh‐Wen Chang, Jung‐Fu Chen, and Cheng‐Hsien Lu
- Subjects
Cardiovascular autonomic neuropathy ,Electrochemical skin conductance ,Heart rate variability ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Abstract Aims/Introduction Clinical studies show that either heart rate variability (HRV) or electrochemical skin conductance (ESC) alone can serve as a simple and objective method for screening cardiovascular autonomic neuropathy (CAN). We tested the hypothesis that combining these two quantitative approaches can not only reinforce accuracy in CAN screening but also provide a better estimate of CAN severity in patients with type 2 diabetes (T2DM) who had already had CAN in outpatient clinics. Materials and Methods Each patient received a complete battery of cardiovascular autonomic reflex tests (CARTs), with ESC measured by SUDOSCAN, time domain of HRV measured by standard deviation of all normal RR intervals (SDNN) and frequency domain of HRV (low frequency [LF], high frequency [HF], and LF/HF ratio), and peripheral blood studies for vascular risk factors. Severity of CAN was measured by CAN score. Results The 90 T2DM patients included 50 males and 40 females. Those with more severe CAN had lower values in feet ESC (P = 0.023) and SDNN (P
- Published
- 2021
- Full Text
- View/download PDF
4. Association between Pro12Ala polymorphism and albuminuria in type 2 diabetic nephropathy
- Author
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Yung‐Nien Chen, Pei‐Wen Wang, Shih‐Chen Tung, Ming‐Chun Kuo, Shao‐Wen Weng, Chen‐Kai Chou, Chih‐Min Chang, Chia‐Jen Tsa, Cheng‐Feng Taso, Feng‐Chih Shen, and Jung‐Fu Chen
- Subjects
Diabetic nephropathies ,Peroxisome proliferator‐activated receptor gamma ,Polymorphism ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Abstract Aims/Introduction Diabetic nephropathy (DN) is a complication of diabetes mellitus that is characterized by the gradual loss of kidney function, which results in increased levels of albumin in the urine. The Pro12Ala polymorphism in the peroxisome proliferator‐activated receptor‐γ2 gene has been confirmed to improve insulin sensitivity, but its association with susceptibility to DN in patients with type 2 diabetes remains inconclusive. Materials and Methods To examine whether the Pro12Ala polymorphism leads to the development of DN, a case‐control study was carried out in 554 patients with type 2 diabetes. The genotypes of Pro12Ala polymorphism of the peroxisome proliferator‐activated receptor gamma 2 gene were analyzed by real‐time polymerase chain reaction with TaqMan® probe genotyping assay in all patients. Results The mean age of the study population was 57.7 ± 8.8 years, with average diabetes duration of 12.8 ± 6.9 years. The prevalence of albuminuria was 43.5%. The frequency of genotype Pro12Pro, Pro12Ala and Ala12Ala genotype were 92.6%, 7.0%, 0.4% in our study population, and 90.4%, 8.9% and 0.7% in normal urinary albumin‐to‐creatinine ratio group, respectively. The Ala carriers (Pro12Ala + Ala12Ala) had significantly lower urinary albumin‐to‐creatinine ratio (15.0 vs 20.5 mg/g, P = 0.001) and better renal function (estimated glomerular filtration rate 81.8 [69.8–97.6] vs 78.7 mL/min/1.73 m2 [61.6–96.2]; P = 0.05) compared with those with the genotype Pro12Pro. After adjustment for age, sex and other confounders, the odds ratio of albuminuria for the Ala12 allele was 0.428 (95% confidence interval 0.195–0.940, P = 0.034]). Conclusions Our results suggest that the peroxisome proliferator‐activated receptor gamma 2 Ala12 variant has significant protective effects against albuminuria and DN.
- Published
- 2020
- Full Text
- View/download PDF
5. Basal insulin therapy: Unmet medical needs in Asia and the new insulin glargine in diabetes treatment
- Author
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Kai‐Jen Tien, Yi‐Jen Hung, Jung‐Fu Chen, Ching‐Chu Chen, Chih‐Yuan Wang, Chii‐Min Hwu, Yu‐Yao Huang, Pi‐Jung Hsiao, Shih‐Te Tu, Chao‐Hung Wang, and Wayne Huey‐Herng Sheu
- Subjects
Asians ,Diabetes ,Insulin glargine ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Abstract Diabetes remains a global epidemic and a tremendous health challenge, especially in the Asian population. Dramatic increases in the prevalence of diabetes across different countries or areas in Asia have been reported in recent epidemiological studies. Although clinical guidelines have strengthened appropriate antihyperglycemic medications and lifestyle modifications for optimal diabetes management, inadequate glycemic control still occurs in many patients with an increased risk of developing microvascular and macrovascular complications. Insulin administration is the main therapy for diabetes in response to the inability to secrete insulin, and is recommended in current guidelines to treat patients with type 2 diabetes after failure of oral antidiabetic drugs. Clinical studies have shown that long‐acting insulin analogs improve basal glycemic control with reduced risk of hypoglycemia. In the present review, we discuss previous challenges with basal insulin therapy in Asia, the pharmacological development of insulin analogs to overcome the unmet medical needs and recent clinical studies of the new ultra‐long‐acting insulin analog, insulin glargine U300. Furthermore, relevant findings of current real‐world evidence are also included for the comparison of the efficacy and safety of different insulin formulations. Based on the accumulating evidence showing a low incidence of hypoglycemia and technical benefits of dose titration, treatment with glargine U300 can be a promising strategy for Asian diabetes patients to achieve glycemic targets with favorable safety.
- Published
- 2019
- Full Text
- View/download PDF
6. Feasibility of combining heart rate variability and electrochemical skin conductance as screening and severity evaluation of cardiovascular autonomic neuropathy in type 2 diabetes
- Author
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Cheng-Hsien Lu, Chih-Cheng Huang, Nai-Wen Tsai, Wen-Chan Chiu, Yun-Ru Lai, Ben-Chung Cheng, Hsueh-Wen Chang, and Jung-Fu Chen
- Subjects
Male ,Endocrinology, Diabetes and Metabolism ,Type 2 diabetes ,030204 cardiovascular system & hematology ,Severity of Illness Index ,0302 clinical medicine ,Diabetic Neuropathies ,Heart Rate ,Risk Factors ,Outpatient clinic ,Heart rate variability ,Prospective Studies ,food and beverages ,General Medicine ,Articles ,Galvanic Skin Response ,Prognosis ,Clinical Science and Care ,Cardiovascular Diseases ,Cardiology ,Original Article ,Female ,circulatory and respiratory physiology ,medicine.medical_specialty ,Cardiovascular autonomic neuropathy ,030209 endocrinology & metabolism ,Electrochemical skin conductance ,Diseases of the endocrine glands. Clinical endocrinology ,03 medical and health sciences ,Internal medicine ,Diabetes mellitus ,Internal Medicine ,medicine ,Autonomic reflex ,Humans ,Aged ,Autonomic nerve ,business.industry ,fungi ,Electrochemical Techniques ,medicine.disease ,RC648-665 ,Diabetes Mellitus, Type 2 ,ROC Curve ,Feasibility Studies ,Autonomic neuropathy ,business ,Skin conductance ,Follow-Up Studies - Abstract
Aims/Introduction Clinical studies show that either heart rate variability (HRV) or electrochemical skin conductance (ESC) alone can serve as a simple and objective method for screening cardiovascular autonomic neuropathy (CAN). We tested the hypothesis that combining these two quantitative approaches can not only reinforce accuracy in CAN screening but also provide a better estimate of CAN severity in patients with type 2 diabetes (T2DM) who had already had CAN in outpatient clinics. Materials and Methods Each patient received a complete battery of cardiovascular autonomic reflex tests (CARTs), with ESC measured by SUDOSCAN, time domain of HRV measured by standard deviation of all normal RR intervals (SDNN) and frequency domain of HRV (low frequency [LF], high frequency [HF], and LF/HF ratio), and peripheral blood studies for vascular risk factors. Severity of CAN was measured by CAN score. Results The 90 T2DM patients included 50 males and 40 females. Those with more severe CAN had lower values in feet ESC (P = 0.023) and SDNN (P
- Published
- 2021
7. Association between Pro12Ala polymorphism and albuminuria in type 2 diabetic nephropathy
- Author
-
Pei-Wen Wang, Chia‐Jen Tsa, Shih-Chen Tung, Ming-Chun Kuo, Cheng-Feng Taso, Feng-Chih Shen, Chen-Kai Chou, Jung-Fu Chen, Shao-Wen Weng, Chih-Min Chang, and Yung-Nien Chen
- Subjects
Male ,medicine.medical_specialty ,Genotype ,Endocrinology, Diabetes and Metabolism ,Renal function ,030209 endocrinology & metabolism ,Type 2 diabetes ,030204 cardiovascular system & hematology ,Gastroenterology ,Diseases of the endocrine glands. Clinical endocrinology ,Diabetic nephropathy ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Diabetes mellitus ,Diabetic nephropathies ,Odds Ratio ,Prevalence ,Internal Medicine ,medicine ,Albuminuria ,Humans ,Genetic Predisposition to Disease ,Polymorphism ,Alleles ,Aged ,Peroxisome proliferator‐activated receptor gamma ,Polymorphism, Genetic ,business.industry ,Articles ,General Medicine ,Odds ratio ,Middle Aged ,RC648-665 ,medicine.disease ,PPAR gamma ,Clinical Science and Care ,Diabetes Mellitus, Type 2 ,Case-Control Studies ,Creatinine ,Population study ,Female ,Original Article ,medicine.symptom ,business ,Glomerular Filtration Rate - Abstract
Aims/Introduction Diabetic nephropathy (DN) is a complication of diabetes mellitus that is characterized by the gradual loss of kidney function, which results in increased levels of albumin in the urine. The Pro12Ala polymorphism in the peroxisome proliferator‐activated receptor‐γ2 gene has been confirmed to improve insulin sensitivity, but its association with susceptibility to DN in patients with type 2 diabetes remains inconclusive. Materials and Methods To examine whether the Pro12Ala polymorphism leads to the development of DN, a case‐control study was carried out in 554 patients with type 2 diabetes. The genotypes of Pro12Ala polymorphism of the peroxisome proliferator‐activated receptor gamma 2 gene were analyzed by real‐time polymerase chain reaction with TaqMan® probe genotyping assay in all patients. Results The mean age of the study population was 57.7 ± 8.8 years, with average diabetes duration of 12.8 ± 6.9 years. The prevalence of albuminuria was 43.5%. The frequency of genotype Pro12Pro, Pro12Ala and Ala12Ala genotype were 92.6%, 7.0%, 0.4% in our study population, and 90.4%, 8.9% and 0.7% in normal urinary albumin‐to‐creatinine ratio group, respectively. The Ala carriers (Pro12Ala + Ala12Ala) had significantly lower urinary albumin‐to‐creatinine ratio (15.0 vs 20.5 mg/g, P = 0.001) and better renal function (estimated glomerular filtration rate 81.8 [69.8–97.6] vs 78.7 mL/min/1.73 m2 [61.6–96.2]; P = 0.05) compared with those with the genotype Pro12Pro. After adjustment for age, sex and other confounders, the odds ratio of albuminuria for the Ala12 allele was 0.428 (95% confidence interval 0.195–0.940, P = 0.034]). Conclusions Our results suggest that the peroxisome proliferator‐activated receptor gamma 2 Ala12 variant has significant protective effects against albuminuria and DN., The peroxisome proliferator‐activated receptor‐γ2 Ala12 variant has significant protective effects against albuminuria and diabetic nephropathy. These findings suggest that genetic screening can help in the development of personalized therapies for diabetes.
- Published
- 2020
- Full Text
- View/download PDF
8. Mitochondrial haplogroups have a better correlation to insulin requirement than nuclear genetic variants for type 2 diabetes mellitus in Taiwanese individuals
- Author
-
Tsu-Kung Lin, Jiin-Haur Chuang, Meng-Han Tsai, Sung-Chou Li, Pei-Wen Wang, Ching-Yi Lin, Chia-Wei Liou, Yu-Jih Su, Shun-Jen Chang, Jung-Fu Chen, Feng-Chih Shen, Shao-Wen Weng, and Yen-Hsiang Chang
- Subjects
Male ,Mitochondrial DNA ,Endocrinology, Diabetes and Metabolism ,Taiwan ,Single-nucleotide polymorphism ,Type 2 diabetes ,DNA, Mitochondrial ,Polymorphism, Single Nucleotide ,Haplogroup ,Diseases of the endocrine glands. Clinical endocrinology ,Insulin resistance ,Asian People ,Internal Medicine ,medicine ,Humans ,Hypoglycemic Agents ,Insulin ,Genetic Predisposition to Disease ,Genetics ,business.industry ,Haplotype ,Diabetes ,Type 2 Diabetes Mellitus ,High-Throughput Nucleotide Sequencing ,General Medicine ,Articles ,Middle Aged ,medicine.disease ,RC648-665 ,Mitochondria ,Clinical Science and Care ,Diabetes Mellitus, Type 2 ,Haplotypes ,Female ,Original Article ,Insulin Resistance ,business ,Human mitochondrial DNA haplogroup - Abstract
Aims/Introduction Identifying diabetes‐susceptible genetic variants will help to provide personalized therapy for the management of type 2 diabetes. Previous studies have reported a genetic risk score (GRS), computed by the sum of nuclear DNA (nDNA) risk alleles, that may predict the future requirement for insulin therapy. Although mitochondrial dysfunction has a close association with insulin resistance (IR), there are few studies investigating whether genetic variants of mitochondrial DNA (mtDNA) will affect the clinical characteristics of type 2 diabetes. Materials and Methods Mitochondrial haplogroups were determined using mtDNA whole genome next generation sequencing and 13 single nucleotide polymorphisms (SNPs) in nDNA susceptibility loci of 13 genes in 604 Taiwanese subjects with type 2 diabetes. A GRS of nDNA was computed by summation of the number of risk alleles. The correlation between the mtDNA haplogroup and the clinical characteristics of type 2 diabetes was assessed by logistic regression analysis. The results were compared with the GRS subgroups for the risk of insulin requirement. Results Mitochondrial haplogroups modulate the clinical characteristics of type 2 diabetes, in which patients harboring haplogroup D4, compared with those harboring non‐D4 haplotypes, were less prone to require insulin treatment, after adjusting for age, gender, and diabetes duration. However, there was no association between insulin requirement and GRS calculated from nuclear genetic variants. Conclusions Mitochondrial haplogroups, but not nuclear genetic variants, have a better association with the insulin requirement. The results highlight the role of mitochondria in the management of common metabolic diseases., Mitochondrial haplogroups, but not nuclear genetic variants, have a better association with the insulin requirement in patients with T2DM.
- Published
- 2021
9. Basal insulin therapy: Unmet medical needs in Asia and the new insulin glargine in diabetes treatment
- Author
-
Chii-Min Hwu, Chih-Yuan Wang, Shih-Te Tu, Yi-Jen Hung, Wayne Huey-Herng Sheu, Kai-Jen Tien, Ching-Chu Chen, Chao-Hung Wang, Yu-Yao Huang, Pi-Jung Hsiao, and Jung-Fu Chen
- Subjects
medicine.medical_specialty ,Asia ,Insulin glargine ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Insulin analog ,030209 endocrinology & metabolism ,Review Article ,Type 2 diabetes ,Diseases of the endocrine glands. Clinical endocrinology ,03 medical and health sciences ,0302 clinical medicine ,Diabetes management ,Diabetes mellitus ,Diabetes Mellitus ,Internal Medicine ,medicine ,Humans ,Hypoglycemic Agents ,030212 general & internal medicine ,Intensive care medicine ,Glycemic ,business.industry ,Insulin ,Diabetes ,General Medicine ,Prognosis ,RC648-665 ,medicine.disease ,Asians ,Basal (medicine) ,business ,Needs Assessment ,medicine.drug - Abstract
Diabetes remains a global epidemic and a tremendous health challenge, especially in the Asian population. Dramatic increases in the prevalence of diabetes across different countries or areas in Asia have been reported in recent epidemiological studies. Although clinical guidelines have strengthened appropriate antihyperglycemic medications and lifestyle modifications for optimal diabetes management, inadequate glycemic control still occurs in many patients with an increased risk of developing microvascular and macrovascular complications. Insulin administration is the main therapy for diabetes in response to the inability to secrete insulin, and is recommended in current guidelines to treat patients with type 2 diabetes after failure of oral antidiabetic drugs. Clinical studies have shown that long‐acting insulin analogs improve basal glycemic control with reduced risk of hypoglycemia. In the present review, we discuss previous challenges with basal insulin therapy in Asia, the pharmacological development of insulin analogs to overcome the unmet medical needs and recent clinical studies of the new ultra‐long‐acting insulin analog, insulin glargine U300. Furthermore, relevant findings of current real‐world evidence are also included for the comparison of the efficacy and safety of different insulin formulations. Based on the accumulating evidence showing a low incidence of hypoglycemia and technical benefits of dose titration, treatment with glargine U300 can be a promising strategy for Asian diabetes patients to achieve glycemic targets with favorable safety.
- Published
- 2019
- Full Text
- View/download PDF
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