scholarly journals Prolonged exercise training increases intramuscular lipid content and perilipin 2 expression in type I muscle fibers of patients with type 2 diabetes

2012 ◽  
Vol 303 (9) ◽  
pp. E1158-E1165 ◽  
Author(s):  
C. S. Shaw ◽  
S. O. Shepherd ◽  
A. J. M. Wagenmakers ◽  
D. Hansen ◽  
P. Dendale ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Exercise Training ◽  
Fiber Type ◽  
Muscle Fibers ◽  
Whole Body ◽  
Type I ◽  
Type Ii ◽  
Perilipin 2 ◽  
Diabetes Patients

The aim of the present study was to investigate changes in intramuscular triglyceride (IMTG) content and perilipin 2 expression in skeletal muscle tissue following 6 mo of endurance-type exercise training in type 2 diabetes patients. Ten obese male type 2 diabetes patients (age 62 ± 1 yr, body mass index BMI 31 ± 1 kg/m2) completed three exercise sessions/week consisting of 40 min of continuous endurance-type exercise at 75% V̇o2 peak for a period of 6 mo. Muscle biopsies collected at baseline and after 2 and 6 mo of intervention were analyzed for IMTG content and perilipin 2 expression using fiber type-specific immunofluorescence microscopy. Endurance-type exercise training reduced trunk body fat by 6 ± 2% and increased whole body oxygen uptake capacity by 13 ± 7% ( P < 0.05). IMTG content increased twofold in response to the 6 mo of exercise training in both type I and type II muscle fibers ( P < 0.05). A threefold increase in perilipin 2 expression was observed from baseline to 2 and 6 mo of intervention in the type I muscle fibers only (1.1 ± 0.3, 3.4 ± 0.6, and 3.6 ± 0.6% of fibers stained, respectively, P < 0.05). Exercise training induced a 1.6-fold increase in mitochondrial content after 6 mo of training in both type I and type II muscle fibers ( P < 0.05). In conclusion, this is the first study to report that prolonged endurance-type exercise training increases the expression of perilipin 2 alongside increases in IMTG content in a type I muscle fiber-type specific manner in type 2 diabetes patients.

scholarly journals The Effects of Combined Exercise Training (Resistance-Aerobic) on Serum Kinesin and Physical Function in Type 2 Diabetes Patients with Diabetic Peripheral Neuropathy (Randomized Controlled Trials)

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Seyedeh Hoda Seyedizadeh ◽  
Sadegh Cheragh-Birjandi ◽  
Mohammad Reza Hamedi Nia
Keyword(s):  
Type 2 Diabetes ◽  
Peripheral Neuropathy ◽  
Exercise Training ◽  
Physical Function ◽  
Diabetic Peripheral Neuropathy ◽  
Diabetic Patients ◽  
Combined Exercise ◽  
Combined Exercise Training ◽  
Diabetes Patients

Diabetic peripheral neuropathy is one of the most common chronic complications of diabetics which causes nerve damage and muscle strength decrease in patients. This in turn results in imbalance leading to the diabetic patients’ daily activity disparity. The present investigation was conducted to specifically study the effects of combined training (resistance-aerobic) on serum kinesin-1 and physical function in type 2 diabetes patients with diabetic peripheral neuropathy. 24 diabetic neuropathic females were randomly to be selected out and divided into two experimental and control groups. The experimental group received resistance-aerobic training for 3 sessions during eight weeks. The exercise training included resistance exercises with 2-3 sets, 6-7 exercise stations, 8-12 repetitions (reps), and 3-5 minutes of rest in between the exercises, and the aerobic exercises contained 50-65% of heart rate reserve (HRR) for 3 minutes with 30 seconds of rest interval between sets and 5-10 repetitions. Results show that the serum kinesin-1 level and aerobic endurance declined after eight weeks of combined (resistance-aerobic) exercise training, but this decrease was not significant. The upper body strength increased but it was not significant, while the lower body showed a significant strength increase. With regard to the progressive nature of diabetic peripheral neuropathy, it seems that even the little changes resulting from the combined exercise training can be useful. Nevertheless, more research is required in this area.

scholarly journals Clinical evaluation of an Ayurvedic Formulation in the management of Avaranajanya Madhumeha (Type 2 Diabetes Mellitus)

2019 ◽  
Vol 1 ◽  
pp. 50-64
Author(s):  
DEVASHISH BHARDWAJ ◽  
VEENIT K. AGNIHOTRI ◽  
PRANAV PANDYA
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Blood Sugar ◽  
Type Ii Diabetes ◽  
Type Ii Diabetes Mellitus ◽  
Type Ii ◽  
Research Plan ◽  
Urine Sugar ◽  
Diabetes Patients

A research plan has been developed in the present study to address the problems associated with Avaranajanya Madhumeha (type 2 diabetes). This research plan is based on the treatment methods of Ayurveda (ancient Indian medicine) and utilization of modern scientific methods as research tools. A specific ayurvedic herbo-mineral formulation has been prepared in Ghansatt (solid extract) form; the selected eight herbs and one herbo-mineral have anti-hyperglycemic (PRAMEHA HARA) and antihypercholestermic (MEDOHARA) properties with rejuvenative (RASAYANA) effects as described in classical ayurvedic methods. 15 diagnosed type II diabetes mellitus patients were selected through accidental sampling. Ayurvedic formulation was prescribed to type II diabetes patients for one year along with dietary restrictions. Diabetic diagnostic parameters of these patients like Fasting Blood Sugar (FBS), Post Patrum Blood Sugar (PPBS), Glycocylated Hemoglobin (HbA1C) and Urine Sugar Fasting were monitored every three months; these were measured before and after intervention. The obtained data were statistically analyzed through paired t-test. There was significant reduction in FBS level, PPBS level, HbA1C level and urine fasting sugar level in type 2 diabetes patients who completed the clinical trial successfully. Thus, ayurvedic formulation treatment lead to an overall significant reduction in blood sugar and urine sugar levels in type II diabetes patients. No side effects were noted during the study period. This study suggests that the ayurvedic formulation had very good hypoglycemic effects proved by clinical improvement and bio-chemical analysis of diabetes parameters in the treatment of type II diabetes mellitus.

scholarly journals Long-standing, insulin-treated type 2 diabetes patients with complications respond well to short-term resistance and interval exercise training

2008 ◽  
Vol 158 (2) ◽  
pp. 163-172 ◽  
Author(s):  
S F E Praet ◽  
R A M Jonkers ◽  
G Schep ◽  
C D A Stehouwer ◽  
H Kuipers ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Type 2 Diabetes ◽  
Exercise Training ◽  
Muscle Function ◽  
Whole Body ◽  
Short Term ◽  
Interval Exercise ◽  
Arterial Blood ◽  
Diabetes Outcome

ObjectiveTo determine the feasibility and the benefits of combined resistance and interval exercise training on phenotype characteristics and skeletal muscle function in deconditioned, type 2 diabetes (T2D) patients with polyneuropathy.DesignShort-term, single-arm intervention trial.MethodsEleven male T2D patients (age: 59.1±7.5 years; body mass index: 32.2±4.0 kg/m2) performed progressive resistance and interval exercise training thrice a week for 10 weeks. Besides primary diabetes outcome measures, muscle strength (MUST), maximal workload capacity (Wmax), whole-body peak oxygen uptake (VO2peak) and muscle oxidative capacity (MUOX), intramyocellular lipid (IMCL) and glycogen (IMCG) storage, and systemic inflammation markers were determined before and after training. Daily exogenous insulin requirements (EIR) and historic individualized EIR were gathered and analysed.ResultsMUST and Wmax increased with 17% (90% confidence intervals 9–24%) and 14% (6–21) respectively. Furthermore, mean arterial blood pressure declined with 5.5 mmHg (−9.7 to −1.4). EIR dropped with 5.0 IU/d (−11.5 to 1.5) compared with baseline. A decline of respectively −0.7 mmol/l (−2.9 to 1.5) and −147 μmol/l (−296 to 2) in fasting plasma glucose and non-esterified fatty acids concentrations were observed following the intervention, but these were not accompanied by changes in VO2peak, MUOX, IMCL or IMCG, and blood glycolysated haemoglobin, adiponectin, tumor necrosis factor-α and/or cholesterol concentrations.ConclusionShort-term resistance and interval exercise training is feasible in deconditioned T2D patients with polyneuropathy and accompanied by moderate improvements in muscle function and blood pressure. Such a specific exercise regimen may provide a better framework for future exercise intervention programmes in the treatment of deconditioned T2D patients.

scholarly journals Fiber type- and position-dependent expression of a myosin light chain-CAT transgene detected with a novel histochemical stain for CAT.

1991 ◽  
Vol 115 (2) ◽  
pp. 423-434 ◽  
Author(s):  
M J Donoghue ◽  
J D Alvarez ◽  
J P Merlie ◽  
J R Sanes
Keyword(s):  
Light Chain ◽  
Transgene Expression ◽  
Myosin Light Chain ◽  
Fiber Type ◽  
Muscle Fibers ◽  
Single Type ◽  
Regulatory Sequences ◽  
Type I ◽  
Type Ii ◽  
Light Chain Gene

We recently generated and characterized transgenic mice in which regulatory sequences from a myosin light chain gene (MLC1f/3f) are linked to the chloramphenicol acetyltransferase (CAT) gene. Transgene expression in these mice is specific to skeletal muscle and graded along the rostrocaudal axis: adult muscles derived from successively more caudal somites express successively higher levels of CAT. To investigate the cellular basis of these patterns of expression, we developed and used a histochemical stain that allows detection of CAT in individual cells. Our main results are as follows: (a) Within muscles, CAT is detected only in muscle fibers and not in associated connective tissue, blood vessels, or nerves. Thus, the tissue specificity of transgene expression observed by biochemical assay reflects a cell-type specificity demonstrable histochemically. (b) Within individual muscles, CAT levels vary with fiber type. Like the endogenous MLC1f/3f gene, the transgene is expressed at higher levels in fast-twitch (type II) than in slow-twitch (type I) muscle fibers. In addition, CAT levels vary among type II fiber subtypes, in the order IIB greater than IIX greater than IIA. (c) Among muscles that are similar in fiber type composition, the average level of CAT per fiber varies with rostrocaudal position. This position-dependent variation in CAT level is apparent even when fibers of a single type are compared. From these results, we conclude that fiber type and position affect CAT expression independently. We therefore infer the existence of separate fiber type-specific and positionally graded transcriptional regulators that act together to determine levels of transgene expression.

Intramyocellular lipid content in type 2 diabetes patients compared with overweight sedentary men and highly trained endurance athletes

2004 ◽  
Vol 287 (3) ◽  
pp. E558-E565 ◽  
Author(s):  
Luc J. C. van Loon ◽  
René Koopman ◽  
Ralph Manders ◽  
Walter van der Weegen ◽  
Gerrit P. van Kranenburg ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Type 2 Diabetes ◽  
Lipid Content ◽  
Endurance Athletes ◽  
Type I ◽  
Fiber Types ◽  
Intramyocellular Lipid ◽  
Muscle Lipid ◽  
Diabetes Patients

Recent evidence suggests that intramyocellular lipid (IMCL) accretion is associated with obesity and the development of insulin resistance and/or type 2 diabetes. However, trained endurance athletes are markedly insulin sensitive, despite an elevated mixed muscle lipid content. In an effort to explain this metabolic paradox, we compared muscle fiber type-specific IMCL storage between populations known to have elevated IMCL deposits. Immunofluorescence microscopy was performed on muscle biopsies obtained from eight highly trained endurance athletes, eight type 2 diabetes patients, and eight overweight, sedentary men after an overnight fast. Mixed muscle lipid content was substantially greater in the endurance athletes (4.0 ± 0.4% area lipid stained) compared with the diabetes patients and the overweight men (2.3 ± 0.4 and 2.2 ± 0.5%, respectively). More than 40% of the greater mixed muscle lipid content was attributed to a higher proportion type I muscle fibers (62 ± 8 vs. 38 ± 3 and 33 ± 7%, respectively), which contained 2.8 ± 0.3-fold more lipid than the type II fibers. The remaining difference was explained by a significantly greater IMCL content in the type I muscle fibers of the trained athletes. Differences in IMCL content between groups or fiber types were accounted for by differences in lipid droplet density, not lipid droplet size. IMCL distribution showed an exponential increase in lipid content from the central region toward the sarcolemma, which was similar between groups and fiber types. In conclusion, IMCL contents can be substantially greater in trained endurance athletes compared with overweight and/or type 2 diabetes patients. Because structural characteristics and intramyocellular distribution of lipid aggregates seem to be similar between groups, we conclude that elevated IMCL deposits are unlikely to be directly responsible for inducing insulin resistance.

scholarly journals STUDY ON SAFETY OF INSULIN ADD ON THERAPY AND ORAL HYPOGLYCEMIC AGENTS (OHGAs) IN TYPE - II DIABETES PATIENTS

2020 ◽  
pp. 301-306
Author(s):  
D.Ashalatha D.Ashalatha ◽  
C.Roop kumar C.Roop kumar ◽  
K.Prem Raj K.Prem Raj ◽  
V.Vani V.Vani ◽  
Narayana swamy Palyam ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Type Ii Diabetes ◽  
General Medicine ◽  
Hypoglycemic Agents ◽  
Type Ii ◽  
Oral Hypoglycemic Agents ◽  
Diabetes Survey ◽  
Clinical Drug ◽  
Diabetes Patients

Objectives: A clinical observational investigation directed to look at the security of Insulin add-on treatment and  Hypoglycemic Agents in polypharmacy and to advance safe utilization of insulin and hypoglycemic agents in Type II Diabetes patients, through patient guiding by Clinical drug specialist at Jayabharath hospital, Nellore. Methods: A Prospective Observational investigation was directed on Type -2 Diabetes mellitus patients in the General Medicine office in a tertiary consideration emergency clinic, during the time of June – December 2019. The work was completed by utilizing quiet information assortment structures and a Diabetes survey. Results: Among 193 investigation populace with Type -2 Diabetes, hypoglycemic agents in polypharmacy 46.25% (n=108) was discovered to be more than Insulin alone, and Insulin add on treatment. Conclusion: From the examination, it was discovered that patients who are on hypoglycemic agents in polypharmacy were exposed to GI unsettling influences and who are on Insulin treatment was exposed to hypoglycemic scenes. Considering the key job of drug specialists the security of antidiabetic prescriptions and adherence was improved through patient directing.     

Increase in S6K1 phosphorylation in human skeletal muscle following resistance exercise occurs mainly in type II muscle fibers

2006 ◽  
Vol 290 (6) ◽  
pp. E1245-E1252 ◽  
Author(s):  
René Koopman ◽  
Antoine H. G. Zorenc ◽  
Rudy J. J. Gransier ◽  
David Cameron-Smith ◽  
Luc J. C. van Loon
Keyword(s):  
Skeletal Muscle ◽  
Resistance Exercise ◽  
Human Skeletal Muscle ◽  
Fiber Type ◽  
Muscle Fibers ◽  
Initiation Factor ◽  
Exercise Session ◽  
Type I ◽  
Type Ii ◽  
Postexercise Recovery

To investigate the in vivo effects of resistance exercise on translational control in human skeletal muscle, we determined the phosphorylation of AMP-activated kinase (AMPK), eukaryotic initiation factor 4E-binding protein (4E-BP1), p70/p85-S6 protein kinase (S6K1), and ribosomal S6 protein (S6). Furthermore, we investigated whether changes in the phosphorylation of S6K1 are muscle fiber type specific. Eight male subjects performed a single high-intensity resistance exercise session. Muscle biopsies were collected before and immediately after exercise and after 30 and 120 min of postexercise recovery. The phosphorylation statuses of AMPK, 4E-BP1, S6K1, and S6 were determined by Western blotting with phospho-specific and pan antibodies. To determine fiber type-specific changes in the phosphorylation status of S6K1, immunofluorescence microscopy was applied. AMPK phosphorylation was increased approximately threefold immediately after resistance exercise, whereas 4E-BP1 phosphorylation was reduced to 27 ± 6% of preexercise values. Phosphorylation of S6K1 at Thr421/Ser424 was increased 2- to 2.5-fold during recovery but did not induce a significant change in S6 phosphorylation. Phosphorylation of S6K1 was more pronounced in the type II vs. type I muscle fibers. Before exercise, phosphorylated S6K1 was predominantly located in the nuclei. After 2 h of postexercise recovery, phospho-S6K1 was primarily located in the cytosol of type II muscle fibers. We conclude that resistance exercise effectively increases the phosphorylation of S6K1 on Thr421/Ser424, which is not associated with a substantial increase in S6 phosphorylation in a fasted state.

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