Khat or qat (Catha edulis) is a plant that grows in East Africa and southern Arabia. The
leaves and twigs of this small tree are chewed by several millions of people worldwide for …

Background: Qat (also known as Khat, Kat and Miraa) is a green-leaved plant (Catha
edulis). It is a shrub indigenous to Yemen and certain parts of eastern Africa. Chewing the …

Statement of problem As the cobalt chromium (Co-Cr) powder used in selective laser
melting (SLM) is costly, reusing the remaining powder after multiple cycles provides an …

Objective The role of qat chewing, tobacco (shammah) dipping, smoking, alcohol drinking,
and oral viral infection as risk factors for oral squamous cell carcinoma (OSCC) in Yemen …

Synthetic cathinones also known as β-keto amphetamines are a new group of recreational
designer drugs. We aimed to evaluate the cytotoxic potential of thirteen cathinones lacking …

This study analyzed the antimicrobial and antibiofilm action and cytotoxicity of extract
(HEScL) and silver nanoparticles (AgNPs-HEScL) from Syzygium cumini leaves. GC–MS …

Background An organic extract of the recreational herb khat (Catha edulis Forsk.) triggers
cell death in various leukemia cell lines in vitro. The chemotherapeutics camptothecin, a …

This study aimed to evaluate the effects of oral contraceptive (OC) use, khat chewing, and
their combined effect on telomerase level and tumor suppressor genes, p53 and p21 in …

Objectives The aim of this study was to investigate the antioxidant levels and biomarkers of
oxidative stress in saliva from khat-chewing patients compared with controls. Study Design …

OBJECTIVE: Khat (Catha edulis Forsk) is a naturally occurring drug with an amphetamine-
like structure and action. It has been postulated that amphetamine induces free radical …