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harman/kræft

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ArtiklerKliniske forsøgPatenter
10 resultater
The modifying potential of two nephrotoxic agents, harman and norharman, on N-ethyl-N-hydroxyethylnitrosamine (EHEN)-induced renal and hepatic carcinogenesis was investigated in male F344/DuCrj rats. Animals were given 0.1% EHEN in their drinking water for the first 2 weeks as an initiator.

Endogenous electromagnetic forces emissions during cell respiration as additional factor in cancer origin.

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BACKGROUND Seven decades ago, a seminal paper by Dr. Denham Harman in (J Gerontol 11(3):298-300, 1956), introduced a theory stating that there are good reasons for assuming that endogenous irradiation in the living cells could lead to cancer via an obscure mechanism. The main purpose of this

Beta-carbolines in chronic alcoholics undergoing elective tumor resection.

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The prevalence of chronic alcoholism in patients with carcinomas of the upper digestive tract exceeds 60%. The patient's history and laboratory markers, preoperatively, are often not sensitive or specific enough to detect alcohol-dependent patients, preoperatively, who are at risk of developing

Exposure to beta-carbolines norharman and harman.

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The aromatic beta-carbolines norharman and harman have been implicated in a number of human diseases including Parkinson's disease, tremor, addiction and cancer. It has been shown that these compounds are normal body constituents formed endogenously but external sources have been identified. Here,

Imidazoline receptors, novel agents and therapeutic potential.

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The initial realization that agents containing an imidazoline structure may interact with a distinct class of receptors, has led to a major class of cardiovascular agents, which now has the potential to enter a third generation. There is now general acceptance that there are three main imidazoline
Heterocyclic amines (HAs) are potent mutagens that form at high temperatures in cooked, protein-rich food. Due to their frequent intake, these compounds are considered a risk factor for human cancer. Cooking conditions and eating habits strongly influence the level of HA exposure. Thus, it is
In previous studies, heterocyclic amines (HCAs) have been identified as carcinogenic and a risk factor for human cancer. Therefore, the present study was designed to identify bioactive natural products capable of controlling the formation of HCAs during cooking. For this purpose we have evaluated

Phytochemical and pharmacological study of roots and leaves of Guiera senegalensis J.F. Gmel (Combretaceae).

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The chemical composition of total alkaloids from leaves and roots of Guiera senegalensis was investigated. Three beta-carboline alkaloids were purified: in addition to harman and tetrahydroharman, known in roots and leaves, harmalan (dihydroharman) was isolated for the first time from roots of

Food-borne amines and amides as potential precursors of endogenous carcinogens.

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This paper reviews the experimental results of our research in the past several years and other related papers that have been directed toward the occurrence, biotransformation and epidemiological significance of carcinogenic N-nitroso compounds in biosphere. Endogenous carcinogens are a group of
Heterocyclic amines (HCAs) are carcinogenic food toxicants formed in cooked meats, which may increase the risk of cancer development in humans. Therefore, in this study, the effect of stingless bee honey from different botanical origins on the formation of HCAs in grilled beef satay was
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