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Research Profile - College of Medicine and Health Science - United ...

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Department <strong>of</strong> Pharmacology<br />

<strong>of</strong> the projects performed included; drug<br />

utilization <strong>and</strong> rational use <strong>of</strong> antibiotics <strong>and</strong><br />

analgesics in health care centers <strong>and</strong><br />

community, developing Sickness Impact <strong>Pr<strong>of</strong>ile</strong><br />

for studying quality <strong>of</strong> life in infertile patients,<br />

studying views <strong>of</strong> medical students <strong>and</strong><br />

physicians <strong>of</strong> clinical skills teaching at the<br />

medical colleges <strong>and</strong> surveying patient’s<br />

attitudes towards students involvement in<br />

medical practice.<br />

Dr. Salim Bastaki<br />

Gastroenterology: Gastrointestinal diseases<br />

have increased in recent years. Work stress,<br />

alcohol, non-steroidal anti-inflammatory drugs<br />

(NSAIDS) strong tea or c<strong>of</strong>fees have contributed<br />

to the pathology. Our research is based on<br />

gastrointestinal secretion <strong>and</strong> the mechanism<br />

<strong>of</strong> action <strong>of</strong> PPIs <strong>and</strong> other acid inhibitors on acid<br />

secretion. In the early years, Histamine H2-<br />

receptor antagonist, Sucralfate <strong>and</strong> Muscarinic<br />

receptor antagonists were used more <strong>of</strong>ten.<br />

But with the introduction <strong>of</strong> the proton pump<br />

inhibitors (PPIs) their use has declined owing<br />

to the potent anti-secretory <strong>and</strong> anti-ulcer<br />

activity <strong>of</strong> the PPIs. Recently we published the<br />

work on new proton pump inhibitor,<br />

esomeprazole, Astra-Zeneca (accepted for<br />

publication [2008]). At present we are studying<br />

the interactions <strong>of</strong> aspirin in combination with<br />

ibupr<strong>of</strong>en on gastric acid <strong>and</strong> ulcer formation in<br />

the rat in vivo <strong>and</strong> in vitro (manuscript in<br />

preparation). In the near future we are planning<br />

to study the effect <strong>of</strong> stress on the mucosa <strong>of</strong> FSL<br />

<strong>and</strong> FRL rats <strong>and</strong> the healing rate <strong>of</strong> alcohol-<strong>and</strong><br />

indomethacin-induced ulcers in the same rats.<br />

Teratology: Epilepsy affects approximately 1% <strong>of</strong><br />

the world’s population <strong>and</strong> it is the second most<br />

common neurologic disorder after stroke. It is a<br />

heterogeneous symptom complex a chronic<br />

disorder characterized by chronic seizures.<br />

Approximately 0.5% <strong>of</strong> all pregnancies occur in<br />

women with epilepsy. It is known that epileptic<br />

women demonstrate a higher liability to obstetric<br />

complication than non-epileptic females <strong>and</strong><br />

congenital malformations are more common in<br />

their <strong>of</strong>fspring than those <strong>of</strong> women who do not<br />

take anti-epileptic drugs.<br />

Pharmacogenetics: Oxidation by enzymes<br />

encoded at the CYP2D6 locus is the main route<br />

<strong>of</strong> elimination for a large number <strong>of</strong> drugs<br />

including many commonly prescribed in<br />

psychiatric practice such as antidepressants <strong>and</strong><br />

neuroleptics. The CYP2D6 locus is highly<br />

polymorphic <strong>and</strong> numerous mutant CYP2D6<br />

alleles are currently known including defective<br />

alleles which yield no functional protein product<br />

<strong>and</strong> duplicated active alleles which cause<br />

ultrarapid oxidation. Two CYP2D6 oxidation<br />

phenotypes EM (extensive metabolisers) <strong>and</strong> PM<br />

(poor metabolisers) are commonly recognized.<br />

These phenotypes can be accurately predicted<br />

by genotyping. The clinical implications <strong>of</strong> the<br />

CYP2D6 polymorphism are <strong>of</strong> potential<br />

importance to psychiatric practice in the UAE<br />

since tricyclic antidepressants are widely<br />

prescribed for treatment <strong>of</strong> depression. These<br />

drugs have a small therapeutic index <strong>and</strong><br />

unpleasant side-effects or therapeutic failure is<br />

commonly encountered when fixed dose<br />

regimens are used. There are only very few <strong>and</strong><br />

conflicting data concerning the distribution <strong>of</strong><br />

CYP2D6 phenotypes in Arab populations <strong>and</strong> no<br />

genotyping studies have ever been carried out.<br />

We aim to determine the frequency <strong>of</strong> the most<br />

common CYP2D6 alleles in the local population<br />

using allele specific PCR methodology <strong>and</strong> to<br />

assess the relevance <strong>of</strong> the CYP2D6<br />

polymorphism to psychiatric practice in the UAE.<br />

Dr. Murat Ahmed Oz<br />

<strong>Research</strong> interest <strong>of</strong> Dr. Oz focuses on the<br />

identification <strong>of</strong> ion channels <strong>and</strong> neuronal<br />

networks upon which neuropharmacologically<br />

active agents act to modulate neuronal<br />

excitability. To this end, actions <strong>of</strong> neuropeptides<br />

such as vasopressin, angiotensin, <strong>and</strong><br />

cholecystokinin on the spinal cord preparations<br />

<strong>and</strong> the effects <strong>of</strong> bioactive lipids such as<br />

endocannabinoids on the functions <strong>of</strong> ion<br />

channels are the major research topics<br />

investigated in his laboratory.<br />

Dr. Samir Attoub<br />

Cancer research<br />

My research is focused on the role <strong>of</strong><br />

PI3K/Akt/NFKB‚ pathway as a driving force behind<br />

lung <strong>and</strong> colon cancer progression (apoptosis,<br />

invasion, angiogenesis <strong>and</strong> metastasis) using<br />

siRNA technology <strong>and</strong> in parallel screening <strong>of</strong><br />

potential anti-cancer drugs.<br />

1. Identification <strong>of</strong> Akt is<strong>of</strong>orms involved in<br />

colon cancer survival <strong>and</strong> invasion<br />

The PI3K/Akt/NFKB signaling cascade is<br />

constitutively activated in cancers. Akt is linked<br />

to the transforming activity <strong>of</strong> c-src, c-kit, c-met<br />

oncogenes <strong>and</strong> growth factors, such as EGF <strong>and</strong><br />

64

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