Gliclazide inhibits diabetic neuropathy irrespective of blood glucose levels in streptozotocin-induced diabetic rats. 1998

X Qiang, and J Satoh, and M Sagara, and M Fukuzawa, and T Masuda, and S Miyaguchi, and K Takahashi, and T Toyota
Third Department of Internal Medicine, Tohoku University School of Medicine, Sendai, Japan.

N-acetylcysteine and pentoxifylline, free radical scavengers and inhibitors of tumor necrosis factor-alpha (TNF-alpha) production, inhibit the development of peripheral neuropathy in streptozotocin (STZ)-induced diabetic rats. This study was designed to elucidate the effect of gliclazide, an oral hypoglycemic sulfonylurea, on diabetic neuropathy, because it has been indicated to be a free radical scavenger and TNF-alpha inhibitor. Rats were fed with powder chow mixed with gliclazide or glibenclamide as a control ad libitum. Blood glucose levels and body weight were remarkably higher and lower in diabetic than in nondiabetic rats, respectively, while gliclazide and glibenclamide had no effect on these in both diabetic and nondiabetic rats throughout a 24-week experiment. Serum lipoperoxide levels and lipopolysaccharide (LPS)-induced serum TNF-alpha activities were significantly increased in diabetic rats, whereas these were significantly inhibited in gliclazide-treated rats. Motor nerve conduction velocity (MNCV) of the tibial nerve significantly slowed in diabetic rats compared with nondiabetic rats. On the other hand, the slowed MNCV was significantly inhibited in gliclazide-treated diabetic rats after 16 experimental weeks. Morphometric analysis showed that gliclazide prevented decreased myelinated fiber area (P < .05), increased fiber density (P < .001), and decreased axon/myelin ratio (P < .05) in diabetic rats. Glibenclamide treatment did not affect serum lipoperoxide, TNF-alpha, MNCV, or nerve morphology in this experiment. These results indicate that gliclazide has a beneficial effect on peripheral neuropathy in STZ-induced diabetic rats, irrespective of blood glucose levels.

UI MeSH Term Description Entries
D007004 Hypoglycemic Agents Substances which lower blood glucose levels. Antidiabetic,Antidiabetic Agent,Antidiabetic Drug,Antidiabetics,Antihyperglycemic,Antihyperglycemic Agent,Hypoglycemic,Hypoglycemic Agent,Hypoglycemic Drug,Antidiabetic Agents,Antidiabetic Drugs,Antihyperglycemic Agents,Antihyperglycemics,Hypoglycemic Drugs,Hypoglycemic Effect,Hypoglycemic Effects,Hypoglycemics,Agent, Antidiabetic,Agent, Antihyperglycemic,Agent, Hypoglycemic,Agents, Antidiabetic,Agents, Antihyperglycemic,Agents, Hypoglycemic,Drug, Antidiabetic,Drug, Hypoglycemic,Drugs, Antidiabetic,Drugs, Hypoglycemic,Effect, Hypoglycemic,Effects, Hypoglycemic
D008297 Male Males
D009431 Neural Conduction The propagation of the NERVE IMPULSE along the nerve away from the site of an excitation stimulus. Nerve Conduction,Conduction, Nerve,Conduction, Neural,Conductions, Nerve,Conductions, Neural,Nerve Conductions,Neural Conductions
D001786 Blood Glucose Glucose in blood. Blood Sugar,Glucose, Blood,Sugar, Blood
D001835 Body Weight The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms. Body Weights,Weight, Body,Weights, Body
D003921 Diabetes Mellitus, Experimental Diabetes mellitus induced experimentally by administration of various diabetogenic agents or by PANCREATECTOMY. Alloxan Diabetes,Streptozocin Diabetes,Streptozotocin Diabetes,Experimental Diabetes Mellitus,Diabete, Streptozocin,Diabetes, Alloxan,Diabetes, Streptozocin,Diabetes, Streptozotocin,Streptozocin Diabete
D003929 Diabetic Neuropathies Peripheral, autonomic, and cranial nerve disorders that are associated with DIABETES MELLITUS. These conditions usually result from diabetic microvascular injury involving small blood vessels that supply nerves (VASA NERVORUM). Relatively common conditions which may be associated with diabetic neuropathy include third nerve palsy (see OCULOMOTOR NERVE DISEASES); MONONEUROPATHY; mononeuropathy multiplex; diabetic amyotrophy; a painful POLYNEUROPATHY; autonomic neuropathy; and thoracoabdominal neuropathy. (From Adams et al., Principles of Neurology, 6th ed, p1325) Diabetic Amyotrophy,Diabetic Autonomic Neuropathy,Diabetic Neuralgia,Diabetic Polyneuropathy,Neuralgia, Diabetic,Asymmetric Diabetic Proximal Motor Neuropathy,Diabetic Asymmetric Polyneuropathy,Diabetic Mononeuropathy,Diabetic Mononeuropathy Simplex,Diabetic Neuropathy, Painful,Mononeuropathy, Diabetic,Symmetric Diabetic Proximal Motor Neuropathy,Amyotrophies, Diabetic,Amyotrophy, Diabetic,Asymmetric Polyneuropathies, Diabetic,Asymmetric Polyneuropathy, Diabetic,Autonomic Neuropathies, Diabetic,Autonomic Neuropathy, Diabetic,Diabetic Amyotrophies,Diabetic Asymmetric Polyneuropathies,Diabetic Autonomic Neuropathies,Diabetic Mononeuropathies,Diabetic Mononeuropathy Simplices,Diabetic Neuralgias,Diabetic Neuropathies, Painful,Diabetic Neuropathy,Diabetic Polyneuropathies,Mononeuropathies, Diabetic,Mononeuropathy Simplex, Diabetic,Mononeuropathy Simplices, Diabetic,Neuralgias, Diabetic,Neuropathies, Diabetic,Neuropathies, Diabetic Autonomic,Neuropathies, Painful Diabetic,Neuropathy, Diabetic,Neuropathy, Diabetic Autonomic,Neuropathy, Painful Diabetic,Painful Diabetic Neuropathies,Painful Diabetic Neuropathy,Polyneuropathies, Diabetic,Polyneuropathies, Diabetic Asymmetric,Polyneuropathy, Diabetic,Polyneuropathy, Diabetic Asymmetric,Simplex, Diabetic Mononeuropathy,Simplices, Diabetic Mononeuropathy
D005907 Gliclazide An oral sulfonylurea hypoglycemic agent which stimulates insulin secretion. Diabrezide,Diaglyk,Diaikron,Diamicron,Gen-Gliclazide,Gliklazid,Glyade,Glyclazide,Novo-Gliclazide,S-1702,S-852,Gen Gliclazide,Novo Gliclazide,S 1702,S 852,S1702,S852
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013979 Tibial Nerve The medial terminal branch of the sciatic nerve. The tibial nerve fibers originate in lumbar and sacral spinal segments (L4 to S2). They supply motor and sensory innervation to parts of the calf and foot. Medial Plantar Nerve,Posterior Tibial Nerve,Medial Plantar Nerves,Nerve, Medial Plantar,Nerve, Posterior Tibial,Nerve, Tibial,Nerves, Medial Plantar,Nerves, Posterior Tibial,Nerves, Tibial,Plantar Nerve, Medial,Plantar Nerves, Medial,Posterior Tibial Nerves,Tibial Nerve, Posterior,Tibial Nerves,Tibial Nerves, Posterior

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