Mutational analysis of the coding regions of the genes encoding protein kinase B-alpha and -beta, phosphoinositide-dependent protein kinase-1, phosphatase targeting to glycogen, protein phosphatase inhibitor-1, and glycogenin: lessons from a search for genetic variability of the insulin-stimulated glycogen synthesis pathway of skeletal muscle in NIDDM patients
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Mutational analysis of the coding regions of the genes encoding protein kinase B-alpha and -beta, phosphoinositide-dependent protein kinase-1, phosphatase targeting to glycogen, protein phosphatase inhibitor-1, and glycogenin : lessons from a search for genetic variability of the insulin-stimulated glycogen synthesis pathway of skeletal muscle in NIDDM patients. / Hansen, L; Fjordvang, H; Rasmussen, S K; Vestergaard, H; Echwald, Søren Morgenthaler; Hansen, T; Alessi, D; Shenolikar, S; Saltiel, A R; Barbetti, F; Pedersen, O.
In: Diabetes, Vol. 48, No. 2, 02.1999, p. 403-7.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Mutational analysis of the coding regions of the genes encoding protein kinase B-alpha and -beta, phosphoinositide-dependent protein kinase-1, phosphatase targeting to glycogen, protein phosphatase inhibitor-1, and glycogenin
T2 - lessons from a search for genetic variability of the insulin-stimulated glycogen synthesis pathway of skeletal muscle in NIDDM patients
AU - Hansen, L
AU - Fjordvang, H
AU - Rasmussen, S K
AU - Vestergaard, H
AU - Echwald, Søren Morgenthaler
AU - Hansen, T
AU - Alessi, D
AU - Shenolikar, S
AU - Saltiel, A R
AU - Barbetti, F
AU - Pedersen, O
PY - 1999/2
Y1 - 1999/2
N2 - The finding of a reduced insulin-stimulated glucose uptake and glycogen synthesis in the skeletal muscle of glucose-tolerant first-degree relatives of patients with NIDDM, as well as in cultured fibroblasts and skeletal muscle cells isolated from NIDDM patients, has been interpreted as evidence for a genetic involvement in the disease. The mode of inheritance of the common forms of NIDDM is as yet unclear, but the prevailing hypothesis supports a polygenic model. In the present study, we tested the hypothesis that the putative inheritable defects of insulin-stimulated muscle glycogen synthesis might be caused by genetic variability in the genes encoding proteins shown by biochemical evidence to be involved in insulin-stimulated glycogen synthesis in skeletal muscle. In 70 insulin-resistant Danish NIDDM patients, mutational analysis by reverse transcription-polymerase chain reaction-single strand conformation polymorphism-heteroduplex analysis was performed on genomic DNA or skeletal muscle-derived cDNAs encoding glycogenin, protein phosphatase inhibitor-1, phophatase targeting to glycogen, protein kinase B-alpha and -beta, and the phosphoinositide-dependent protein kinase-1. Although a number of silent variants were identified in some of the examined genes, we found no evidence for the hypothesis that the defective insulin-stimulated glycogen synthesis in skeletal muscle in NIDDM is caused by structural changes in the genes encoding the known components of the insulin-sensitive glycogen synthesis pathway of skeletal muscle.
AB - The finding of a reduced insulin-stimulated glucose uptake and glycogen synthesis in the skeletal muscle of glucose-tolerant first-degree relatives of patients with NIDDM, as well as in cultured fibroblasts and skeletal muscle cells isolated from NIDDM patients, has been interpreted as evidence for a genetic involvement in the disease. The mode of inheritance of the common forms of NIDDM is as yet unclear, but the prevailing hypothesis supports a polygenic model. In the present study, we tested the hypothesis that the putative inheritable defects of insulin-stimulated muscle glycogen synthesis might be caused by genetic variability in the genes encoding proteins shown by biochemical evidence to be involved in insulin-stimulated glycogen synthesis in skeletal muscle. In 70 insulin-resistant Danish NIDDM patients, mutational analysis by reverse transcription-polymerase chain reaction-single strand conformation polymorphism-heteroduplex analysis was performed on genomic DNA or skeletal muscle-derived cDNAs encoding glycogenin, protein phosphatase inhibitor-1, phophatase targeting to glycogen, protein kinase B-alpha and -beta, and the phosphoinositide-dependent protein kinase-1. Although a number of silent variants were identified in some of the examined genes, we found no evidence for the hypothesis that the defective insulin-stimulated glycogen synthesis in skeletal muscle in NIDDM is caused by structural changes in the genes encoding the known components of the insulin-sensitive glycogen synthesis pathway of skeletal muscle.
KW - 3-Phosphoinositide-Dependent Protein Kinases
KW - Carrier Proteins
KW - DNA Mutational Analysis
KW - Diabetes Mellitus, Type 2
KW - Endoribonucleases
KW - Female
KW - Genetic Variation
KW - Glucosyltransferases
KW - Glycogen
KW - Glycoproteins
KW - Humans
KW - Insulin
KW - Intracellular Signaling Peptides and Proteins
KW - Isomerism
KW - Male
KW - Middle Aged
KW - Muscle, Skeletal
KW - Phenotype
KW - Phosphoprotein Phosphatases
KW - Protein-Serine-Threonine Kinases
KW - Proto-Oncogene Proteins
KW - Proto-Oncogene Proteins c-akt
KW - RNA-Binding Proteins
M3 - Journal article
C2 - 10334321
VL - 48
SP - 403
EP - 407
JO - Diabetes
JF - Diabetes
SN - 0012-1797
IS - 2
ER -
ID: 92192413