Our study indicates an increase of tumour incidence in all colonic segments more than a shift to the right colon. TNM staging tended to improve with an appreciable increase of localised lesions. These findings could be consequent to a more extensive use of colonoscopy.
In conclusion hyperhomocysteinaemia is highly prevalent in liver cirrhosis but not in other chronic liver diseases; it may contribute to fibrogenesis and vascular complication of liver cirrhosis.
Acute administration of N-acetylcysteine (NAC) may induce alterations in plasma and urinary levels of homocysteine (Hcy) and cysteine (Cys). We studied the effects of continuous oral NAC therapy on different Hcy and Cys plasma and urinary forms in 40 healthy subjects assigned to three groups (groups A: n = 13, no therapy; group B: n = 14, NAC 600 mg/day, and group C: n = 14, NAC 1,800 mg/day) for 1 month (T1). After a 1-month washout period without therapy (T2), all subjects were treated with oral NAC (1,800 mg/day) for 2 months and (T3 and T4) reassessed monthly for plasma and urinary thiols. The treated subjects showed a significant decrease in plasma total Hcy and a slight increase in total Cys levels; the alterations of different forms of plasma thiols suggested an NAC-induced increase in disulfide forms and an increase in urinary Hcy and Cys excretion as disulfide forms. The effects appeared to be dose dependent, being more marked in subjects treated with higher dosages. This approach may be important, as an association or alternative therapy in hyperhomocysteinemic conditions of poor responses to vitamins.
In CHC, SF is a useful marker for assessing disease duration and progression before starting treatment and for predicting therapeutic response while on therapy. SF rise during antiviral therapy is largely independent of hemolysis and likely indicates activation of macrophages in response to antivirals.
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