Jamal Safi

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This study evaluates the accuracy and cost-benefit of implementing a pooled screening procedure in blood banks in general and especially in developing countries. The sensitivity of pooled testing was found to be relatively high, with the lowest levels estimated at about 98% for pools consisting of three, six, and 12 samples. Screening in pools of up to 12(More)
To initiate delayed neuropathy (DN) in adult hens organophosphates and phosphonates must inhibit most neural NTE and the inhibited NTE must undergo an 'aging' reaction. Phosphinates and those chiral isomers of phosphonates which produce non-aging NTE do not cause DN but act as prophylactic agents. Some racemic phosphoramidates cause DN although the(More)
BACKGROUND The extent of smoking related health and economic problems is causing increasing alarm throughout the world. In the last few years a great number of subjects, especially in the developing world, have been smoking narghile and epidemiological studies on narghile smoking are an essential subject for investigation. The objectives of this study are(More)
The recently discovered non-mevalonate pathway of isoprenoid biosynthesis serves as the unique source of terpenoids in numerous pathogenic eubacteria and in apicoplast-type protozoa, most notably Plasmodium, but is absent in mammalian cells. It is therefore an attractive target for anti-infective chemotherapy. The first committed step of the non-mevalonate(More)
AIMS To assess knowledge, attitude, practice, and toxicity symptoms associated with pesticide use and exposure among 189 farm workers in the Gaza Strip. METHODS A cross section of agricultural farm workers in the Gaza Strip were asked to fill in a questionnaire on knowledge, attitudes, practice towards pesticide use, and associated toxicity symptoms. (More)
Epidemiological association between chronic exposure to pesticides and recorded cases of human malignancy in Gaza Governorates during the years 1990-1999 was studied. The pesticide usage in Gaza Governorates was recorded in detail. It ranged from 216.9 to 393.3 t from 1990 to 1999, respectively. Banned and extremely hazardous pesticides are identified(More)
In the Middle East, the major sources of lead exposure have been leaded gasoline, lead-contaminated flour from traditional stone mills, focal exposures from small battery plants and smelters, and kohl (blue color) in cosmetics. In 1998-2000, we measured blood lead (PbB) levels in children 2-6 years of age in Israel, Jordan, and the Palestinian Authority (n(More)
Enzyme-linked immunosorbent assay (ELISA) and sol-gel-based immunoaffinity purification (IAP) methods for the pyrethroid bioallethrin were developed and applied for monitoring bioallethrin in spiked food, soil, and dust samples. Attempts to determine bioallethrin content in fruit and vegetable extracts revealed high variability between sample preparations(More)
To assess serum cholinesterase levels and symptoms among farm workers who used mainly organophosphorus pesticides in the Gaza Strip, the authors took blood samples from and administered symptom questionnaires to an occupational cohort of 48 field workers. The authors tested the workers for serum acetylcholinesterase and serum butyrylcholinesterase (SBuChE)(More)
Isotherms of phenanthrene adsorption on different organoclay complexes were obtained using the HPLC technique to understand the adsorption behavior and to characterize the effect of sodium chloride (NaCl) on the adsorption. The adsorbed amounts of phenanthrene on montmorillonite exchanged by organic cations such as tetraheptylammonium,(More)