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Hepatitis01:25

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Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver.
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Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion...
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Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
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Aminoadamantanes for chronic hepatitis C.

Mieke H Lamers1, Mark Broekman, Joost P H Drenth

  • 1Department of Gastroenterology and Hepatology, Radboud University Medical Center Nijmegen, Geert Grooteplein Zuid 10, Nijmegen, Netherlands, 6525 GA.

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Aminoadamantanes did not show significant benefits for chronic hepatitis C patients overall. However, a subgroup analysis suggested a potential increase in sustained virological response when combined with interferon-alpha and ribavirin.

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Area of Science:

  • Hepatology and Viral Gastroenterology
  • Pharmacology and Drug Discovery
  • Clinical Trial Analysis and Evidence Synthesis

Background:

  • Chronic hepatitis C virus (HCV) infection affects approximately 160 million people globally, with treatment efficacy varying by genotype.
  • Current combination therapies, including newer direct-acting antivirals, aim to improve sustained virological response (SVR) rates.
  • There is an ongoing need for more effective treatments to increase SVR in HCV patients.

Purpose of the Study:

  • To systematically review and meta-analyze randomized clinical trials on the efficacy and safety of aminoadamantanes for chronic hepatitis C.
  • To assess the beneficial and harmful effects of aminoadamantanes using rigorous statistical methods, including trial sequential analyses.

Main Methods:

  • Conducted comprehensive electronic searches across multiple databases up to December 2013.
  • Included 41 randomized clinical trials involving 6193 patients with chronic hepatitis C.
  • Utilized meta-analyses and trial sequential analyses to evaluate treatment effects and risk of random errors, assessing bias using the 'Risk of bias' tool and quality with GRADE.

Main Results:

  • Overall meta-analysis showed no significant effect of amantadine on all-cause mortality, liver-related morbidity, or adverse events compared to placebo.
  • No significant effect was observed for amantadine on the failure to achieve sustained virological response (SVR) across all trials.
  • A subgroup analysis indicated that amantadine combined with interferon-alpha and ribavirin may decrease the failure to achieve SVR (RR 0.89, 95% CI 0.83 to 0.96).

Conclusions:

  • Aminoadamantanes, particularly amantadine, did not demonstrate significant overall benefits for chronic hepatitis C patients in terms of mortality or major morbidity.
  • While a potential benefit in SVR was suggested in a specific subgroup (amantadine + interferon-alpha + ribavirin), this finding requires cautious interpretation due to potential biases and random errors.
  • The current evidence suggests limited likelihood of substantial future benefits from amantadine, recommending a focus on other direct-acting antiviral agents while its use is considered within clinical trials.