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MULTIPLE BCCS AND DYSPLASTIC NEVI AFTER ACE INHIBITORS (ENALAPRIL/PERINDOPRIL): THE ROLE OF NITROSAMINE CONTAMINATION/AVAILABILITY AS SUBSTANTIAL SKIN CANCER TRIGGERING FACTOR.
Georgian Medical News 2023 Februrary
Nitrosamines as contaminants in a wide variety of drugs are also found to be one of the most likely causes of skin cancer. A detailed analysis of this contamination could in the near future solve to a large extent the puzzle of carcinogenesis concerning the keratinocytic forms of cancer and melanoma. But also, probably cancer in general. Over 80% of skin cancer is due to acquired mutations, and nitrosamines, which are contained as contamination in certain batches of the most commonly distributed drugs worldwide (such as sartans, ACE inhibitors, ranitidine, metformin, hydrochlorothiazide, rifampicin, and a number of others.) are considered among the most powerful external mutagens, carcinogens. Carcinogens that until 2021 were not supposed to be present in medicines and carcinogens for which it was subsequently decided to create a regulatory regime for permissible availability. Regardless of whether these contaminants are applied within the so-called daily acceptable intake dose or many times above it, the problem with the availability of nitrosamines continues to be present. It is also caused by the lack of reflection of the concentration of the corresponding nitrosamine in a certain drug. Thus, it is impossible to calculate the ˝permissible daily intake of the total number of mutagens and their concentration based on polymedication˝. In practice, drug manufacturers distribute nitrosamines in parallel with drugs, although they are not listed as a component of the product but are identified and allowed as contamination or substances with permissible availability by the EMA/FDA. From another point of view, the fact that is not commented on is also of interest, namely that not all batches are affected by this contamination. This suggests that the contamination may have been controlled, since in a manufacturing error the contamination should be widespread. The registration of the potential contamination of a heterogeneous type of medicinal products on the European market to the executive agencies for drug control in certain geographical areas has remained for years without any answer and opens a number of questions. The problem with ACE inhibitors is similar to that with sartans, hydrochlorothiazide, metformin, and ranitidine. The ˝special impression˝ of the clinicians is determined by the fact that the patterns of manifestation of the skin tumors during the administration of a heterogeneous class of medications are similar to completely identical. From this it could be concluded that the unifying factor between the pattern of occurrence could not be based on the action of the main substance of each drug class, since it remains to be radically different. The unifying link remains the sole and only contamination or the permissible already availability of a new ingredient known as nitrosamines. We present cases of multiple basal cell carcinomas and dysplastic nevi following enalapril and perindopril administration. The role of potential contamination of ACE inhibitors with nitrosamines for the development of skin cancer is discussed.
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