1.The Role of Heat Shock Response in Insulin Resistance and Diabetes.
Tatsuya KONDO ; Hiroyuki MOTOSHIMA ; Motoyuki IGATA ; Junji KAWASHIMA ; Takeshi MATSUMURA ; Hirofumi KAI ; Eiichi ARAKI
Diabetes & Metabolism Journal 2014;38(2):100-106
The expansion of life-style related diseases, such as metabolic syndrome (MS) and type 2 diabetes mellitus (T2DM), appears to be unstoppable. It is also difficult to cease their complications in spite of many antidiabetic medications or intervention of public administration. We and our collaborators found that physical medicine using simultaneous stimulation of heat with mild electric current activates heat shock response, thereby reducing visceral adiposity, insulin resistance, chronic inflammation and improving glucose homeostasis in mice models of T2DM, as well as in humans with MS or T2DM. This combination therapy exerts novel action on insulin signaling, beta-cell protection and body compositions, and may provide a new therapeutic alternative in diabetic treatment strategy.
Adiposity
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Animals
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Body Composition
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Cytoprotection
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Diabetes Mellitus
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Diabetes Mellitus, Type 2
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Glucose
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Heat-Shock Response*
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Homeostasis
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Hot Temperature*
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Humans
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Inflammation
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Insulin Resistance*
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Insulin*
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Mice
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Physical and Rehabilitation Medicine
2.Evaluation of the stability of Yamakagashi (Rhabdophis tigrinus) Equine Antivenom after 20 years storage
Morokuma, K. ; Matsumura, T. ; Yamamoto, A. ; Sakai, A. ; Hifumi, T. ; Ato, M. ; Takahashi, M.
Tropical Biomedicine 2021;38(No.2):111-118
In 2000, an equine Yamakagashi (Rhabdophis tigrinus) antivenom (Lot 0001) was testmanufactured as an unapproved drug for treatment of Yamakagashi bites. It was stocked on the premise of super-legal use from the viewpoint of emergency health crisis management. The antivenom showed a strong neutralizing ability against the hemorrhagic and coagulation activity of the Yamakagashi venom in its potency test. One vial of the antivenom can effectively neutralize at least about 4 mg of Yamakagashi venom. Its efficacy has also been confirmed in patients with severe cases of R. tigrinus bite that has been used in emergency. In 2020, this antivenom (Lot 0001) has reached 20 years after its production. To evaluate the integrity and potency of the antivenom, quality control, safety and potency tests had been conducted almost every year since 2012. Physical and chemical tests (property test, moisture content test, insoluble foreign matter test, osmotic pressure ratio test, pH test, protein content test, endotoxin test, sterility test) of the antivenom, showed no significant changes throughout the years, when compared to the results immediately after its production in 2000. All the parameters measured were also within the standard values. In animal safety tests (test for absence of toxicity and pyrogen), there was no change in the test results during the storage period and no abnormalities were observed. The potency test (anti-coagulant activity) after 20 years of the product, showed the same potency as those recorded immediately after production. Therefore, in all of the stability monitoring tests conducted so far, the product did not show any significant change compared to the results immediately after production. This confirms the stability of the product during the stockpiling period to the present, that is, 20 years after production.