normal 0 false false false en-us x-none ar-sa laryngocele is an air-filled, abnormal dilation of the laryngeal saccule that extends upward within the false vocal fold, in communication with the laryngeal lumen. a case of 43-year-old male with bilateral internal laryngoceles, who has been treated as asthma for 4 years, is presented. the patient had dyspnea, cough, and excessive phlegm for a mont...

in recent years, tuberculosis has had a significant rise, caused mainly by the epidemic of acquired immunodeficiency syndrome. the anorectal tuberculosis is a very rare presentation. herein, we presented a 67-year-old man who has had renal transplantation and presented with hematochezia and painful defecation since 6 months before. biopsy was taken from the lower rectal ulcerated lesion. histop...

Tuning the enzyme-like activity and studying the interaction between biologically relevant species and nano-enzymes may facilitate the applications of nanostructures in mimicking natural enzymes. In this work, AuPt alloy nanoparticles (NPs) with varying compositions were prepared through a facile method by co-reduction of Au3+ and Pt2+ in aqueous solutions. The composition could be tuned easily...

OF THESIS PRECISE CONTROL OF CARBON NANOTUBE MEMBRANE STRUCTURE FOR ENZYME MIMETIC CATALYSIS The ability to fabricate a charge-driven water pump is a crucial step toward mimicking the catalytic ability of natural enzyme systems. The first step towards making this water pump a reality is the ability to make a carbon nanotube (CNT) membrane with uniform, 0.8 nm pore diameter. Proposed in this wor...

We investigated the effects of inorganic lead upon calcium-, phospholipid-dependent protein kinase (protein kinase C) in brain microvessels isolated from 6-day-old rat pups. We found that (a) in broken cell preparations, lead at micromolar concentrations activates this enzyme to an extent equivalent to that of micromolar calcium (10.3 +/- 1.3 and 9.2 +/- 1.6 pmol/mg/min, respectively) and (b) p...

Colon-specific drug delivery systems (CDDS) can improve the bioavailability of drug through the oral route. A novel formulation for oral administration using pH-enzyme Di-dependent chitosan mcirospheres (MS) and 5-Fu as a model drug has been investigated for colon-specific drug delivery by the emulsification/chemical cross-linking and coating technique, respectively. The influence of polymer co...