Despite enormous investigative efforts, the pathological basis for Alzheimer's disease remains unclear. Suggested mechanisms for the disorder include cerebral hypoperfusion, inflammation, gene polymorphisms, and molecular lesions in the brain. In this Hypothesis, we argue that the vascular endothelial cell has a central role in the progressive destruction of cortical neurons in Alzheimer's dise...

Background:Upper gastrointestinal (GI) bleeding remains a problem in critically ill-newborns. The use of H2 blockers, by maintaining gastric pH ³ 4, reduces the risk of stress-ulceration and gastric hemorrhage. This study therefore, has evaluated the effects of short-term prophylactic‎ ranitidine in controlling gastric pH and prevention of GI bleeding in neonates. Methods: This randomized contr...

background nosocomial infections increase mortality rate in neonates. studies have attributed the use of h2 blockers as one of the various factors that increase the risk of nosocomial infections. objectives to define the relationship between nosocomial infection and ranitidine in very low birth weight (vlbw) infants admitted in the nicu of a tertiary care hospital. patients and methods all vlbw...

Urticaria involves intensely pruritic, raised wheals, with or without edema of the deeper cutis. It is usually a self-limited, benign reaction, but can be chronic. Rarely, it may represent serious systemic disease or a life-threatening allergic reaction. Urticaria has a lifetime prevalence of approximately 20 percent in the general population. It is caused by immunoglobulin E- and nonimmunoglob...

In 1988 the Nobel Prize in Physiology or Medicine was awarded jointly to Sir James W. Black, Gertrude B. Elion, and George H. Hitchings ‘‘for their discoveries of important principles for drug treatment.’’ The abstraction of the award citation subsumed two distinct lines of research. Black’s work introduced the first members of what became new classes of drugs: beta-blockers used in treatment o...

Gastric polyps are frequently reported in patients undergoing upper endoscopic procedures. In this retrospective study, the association between hyperplastic polyps and celiac disease in Northern Sardinia was estimated.Age, gender, body mass index, and medications taken in the 2 preceding months, including proton-pump inhibitors (PPIs), H2 receptor blockers (anti-H2), Helicobacter pylori status,...

BACKGROUND Conservative treatment of perforated gastroduodenal ulcer has been shown to be associated with good results in patients whose general condition is good. However, its use in patients not eligible for surgical repair has not been supported. The aim of this study is to evaluate the results of conservative treatment in these patients in the era of proton pump inhibitor. MATERIAL AND ME...

AbstractObjectives To systematically review and synthesize the evidence on differential associations between antihypertensive medication (AHM) classes risk of incident dementia. Design Systematic random effects frequentist network meta-analysis. Embase, MEDLINE, Cochrane library were searched from origin to December 2019. Setting participants Randomized contr...

the high performance liquid chromatography (hplc) enantioseparation of four β-blocking agents metoprolol, bisoprolol, propranolol and atenolol was performed on amylose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase using n-hexane-ethanol-diethylamine (dea) as the mobile phase and related chiral recognition mechanisms were discussed. enantiomeric separation of the fourβ-blockers was ...

The scombroid poisoning is due to the ingestion of poorly preserved fish (especially tuna, sardines, and mackerel) out of the cold chain. Under the influence of the proliferation of gram negative bacteria that occurs for heating, the histidine content in the muscle of the fish is converted into histamine, by the action of the enzyme histidine decarboxylase. If the histamine is ingested in large...