H Pylori Infection — HELICOBACTER PYLORI INFECTION IN TYPE 2 DIABETES MELLITUS IN ASSIUT UNIVERSITY HOSPITAL
Citation(s)
Agardh E, Allebeck P, Hallqvist J, Moradi T, Sidorchuk A Type 2 diabetes incidence and socio-economic position: a systematic review and meta-analysis. Int J Epidemiol. 2011 Jun;40(3):804-18. doi: 10.1093/ije/dyr029. Epub 2011 Feb 19.
Haj S, Chodick G, Refaeli R, Goren S, Shalev V, Muhsen K Associations of Helicobacter pylori infection and peptic disease with diabetic mellitus: Results from a large population-based study. PLoS One. 2017 Aug 29;12(8):e0183687. doi: 10.1371/journal.pone.0183687. eCollection 2017.
He C, Yang Z, Lu NH Helicobacter pylori infection and diabetes: is it a myth or fact? World J Gastroenterol. 2014 Apr 28;20(16):4607-17. doi: 10.3748/wjg.v20.i16.4607.
Malaty HM Epidemiology of Helicobacter pylori infection. Best Pract Res Clin Gastroenterol. 2007;21(2):205-14. doi: 10.1016/j.bpg.2006.10.005.
Mishra RR, Tewari M, Shukla HS Association of Helicobacter pylori infection with inflammatory cytokine expression in patients with gallbladder cancer. Indian J Gastroenterol. 2013 Jul;32(4):232-5. doi: 10.1007/s12664-013-0321-6. Epub 2013 Feb 28.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
