The potential health benefits of green tea continue to attract public and scientific interests and are attributed in part to polyphenolic catechin constituents. Polyphenon E (Poly E) is a decaffeinated green tea catechin mixture containing about 50% epigallocatechin gallate and 30% other catechins. We evaluated the toxicity and genotoxicity of Poly E by using two in vitro assays: bacterial muta...

Aim: To identify the anti-mutagenic effect of Nigella sativa on the experimentally induced chronic diabetes (type – II) in Wistar rats. Materials and Methods: The anti-mutagenic effect was evaluated in Nigella sativa treated diabetic rats against the streptozotocin nicotinamide (STZ-NA) (at a dose rate of 45-110 i.p mg/kg b.wt for 90 days) induced type-II diabetes mellitus using bone marrow mic...

A new stable nitronyl nitroxyl radical NIT2011 was synthesized and characterized. The radioprotective effect and pharmacokinetics profiles of NIT2011 were investigated. The results showed that when irradiation exposure dose was 6.5 Gy gama radiation, the survival rate in the irradiation-only group was 20% on 30th day. The survival rate was 70%, 80%, and 90% on 30th day when mice were pretreated...

Chrysanthemum indicum is widely used to treat immune-related and infectious disorders in East Asia. C. indicum flower oil contains 1,8-cineole, germacrene D, camphor, α-cadinol, camphene, pinocarvone, β-caryophyllene, 3-cyclohexen-1-ol, and γ-curcumene. We evaluated the safety of C. indicum flower oil by conducting acute oral toxicity, bone marrow micronucleus, and bacterial reverse mutation te...

The effects of treatment of mice with O6-benzylguanine (O6-BeG) on the levels of O6-alkylguanine-DNA alkyltransferase (ATase) in the hematopoietic compartment and on the in vivo sensitivity of hematopoietic progenitor cells to the toxic and clastogenic effects of the antitumor agents 1,3-bis(2-chloroethyl)-nitrosourea (BCNU) and temozolomide were studied. When the overall effects of BCNU alone ...

Chromosome aberrations induced by mitomycin C (MMC) were suppressed by aspirin in a mouse micronucleus test with peripheral blood and bone marrow cells. Aspirin at doses of 0.5, 5, and 50 mg/kg was injected intraperitoneally or per administered orally 0.5, 6, or 24 h after administration of MMC and then peripheral blood and/or bone marrow cells were sampled 48 h after administration of MMC. The...

The effects of treatment of mice with O-benzylguanine (Oit was of lower magnitude: 1.20 for marrow cellularity, 1.63 for GM-CFC, and 1.68 for CFU-S. When the clastogenic efBeG) on the levels of O-alkylguanine-DNA alkyltransferase (ATase) in the hematopoietic compartment and on the in fects of BCNU and temozolomide were examined in the mouse bone marrow micronucleus assay, a significantly (P viv...