نتایج جستجو برای: nitroso
تعداد نتایج: 2476 فیلتر نتایج به سال:
Research focused on preparing new type curing pigment, which called Nitroso-hemoglobin prepared by use of by-products (beef blood), and its application prospect substitutes of nitrite, because of its a poisonous reagent, and can produce carcinogenic nitrosamine after reacting with amine and lead to carcinogenicity, nitrosamines toxicity in meet's product, and this project defined the developmen...
Several possible risk factors for brain tumors have been suggested in the past, including N-nitroso compounds, but with the exception of ionizing radiation, none has been consistently confirmed. The present study was aimed at assessing the influence of nutritional factors, including N-nitroso compounds, in the etiology of brain tumors, specifically gliomas and meningiomas. One hundred and thirt...
Reduction of the nitroso group in streptozotocin (1a) has led to cyclized products rather than a semicarbazide (1c). Some analogs (1e, 9a, 9b, 9c and 9d) of streptozotocin in which the nitroso group was replaced by other groups have been prepared.
BACKGROUND S-nitrosation--the formation of S-nitrosothiols (RSNOs) at cysteine residues in proteins--is a posttranslational modification involved in signal transduction and nitric oxide (NO) transport. Recent studies would also suggest the formation of N-nitrosamines (RNNOs) in proteins in vivo, although their biological significance remains obscure. In this study, we characterized a redox-base...
An improved procedure for chemically decontaminating residues of nitrosoureas and related N-nitroso compounds ("nitrosamides") commonly used in the cancer research laboratory is proposed. Treatment of accumulated wastes with aluminum:nickel alloy powder while progressively increasing the basicity of the medium consistently led to at least 99.98% destruction of each nitrosamide tested. Hazardous...
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