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RISS 인기검색어
- 검색키워드
- 저자 : Mahmoud Y Madi (검색결과 2 건)
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A Case Series of Esophageal Lichen Planus: An Underdiagnosed Cause of Dysphagia
Puja Rai,Mahmoud Y Madi,Raymond Lee,Aaron Dickstein 대한상부위장관ㆍ헬리코박터학회 2019 Korean Journal of Helicobacter Upper Gastrointesti Vol.19 No.4
Lichen planus (LP) is a chronic mucocutaneous inflammatory condition that typically affects middle-aged adults. Esophageal involvement in LP is rare and underrecognized, often leading to delayed diagnosis and treatment of LP. Herein, we describe three cases of esophageal LP (ELP) in clinically symptomatic patients with endoscopic lesions in the upper to mid-esophagus. This case series suggests that ELP is be more common than was previously thought and emphasizes that clinicians should have a high index of suspicion for this diagnosis, particularly when evaluating proximal esophageal lesions in patients presenting with dysphagia. The series also highlights the successful treatment of our patients with budesonide-honey slurry.
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Hussein, A.M.,Mady, A.H.,Mahmoud, S.,Shim, J.-J.,Yehia, F.Z. Elsevier 2019 Journal of photochemistry and photobiology Chemist Vol.377 No.-
<P><B>Abstract</B></P> <P>Phosphomolybdic (PMo) and vanadium-containing phosphomolybdic (PV<SUB>2</SUB>Mo) acids were synthesized and supported on HZSM-5 zeolite via a wet impregnation technique and used as photocatalysts for the purification of terephthalic acid (TA) via an economic process. Nowadays, purified TA can be obtained from crude TA due to their great commercial importance by separating 4-carboxybenzaldehyde (4-CBA), which represents high environmental toxicity and negatively affects the applications of TA. For these reasons, conversion of 4-CBA to TA is highly desirable for both enhancing the efficiency of purified TA production and environmental reasons. The synthesized catalysts were characterized by XRD, FTIR, Raman spectroscopy, BET, SEM, and TEM. The purification process was carried out by under different parameters as VUV irradiation, persulfate (PS), time, and different types of catalysts (PMo or PV<SUB>2</SUB>Mo)/HZSM-5. This kind of combination showed complete removal of the 4-CBA with a high yield of PTA in 2 h. The high efficiency attributed to the acidity of the polyoxometalates/HZSM-5, which increase the selectivity to oxidize 4-CBA at room temperature and much shorter reaction time compared to other common methods.</P> <P><B>Highlights</B></P> <P> <UL> <LI> PMo or PV<SUB>2</SUB>Mo / HZSM-5 used as a photocatalyst for the economic purification of CTA. </LI> <LI> Catalyst achieve complete purification for CTA at 2 h and at room temperature. </LI> <LI> PV<SUB>2</SUB>Mo/HZSM-5 show no significant loss of catalytic activity for four consecutive. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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