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Journal of Digital Imaging - Accurate segmentation of a breast tumor region is fundamental for treatment. Magnetic resonance imaging (MRI) is a widely used diagnostic tool. In this paper, a new... 相似文献
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Nooran Sherif Elleboudy Mohammad Mabrouk Aboulwafa Nadia Abdel-Haleem Hassouna 《Asian Pacific journal of tropical medicine》2014,7(11):860-866
Objective:To study characteristics of phospholipases C(PLCs),their importance for producing microorganisms us well us the potential of their use for industrial purposes.Methods:PLC from Bacillus cereus(B.cereus) D101 was selected as an example of Gram-positive PLCs and PLC from Pseudomanas aeruginosa(P.aeruginosa) D183 of Gram-negative ones.Enzymes were partially purified by ammonium sulfate precipitation followed by membrane dialysis.Partially purified preparations were used to study effect of different factors on activities as well as in substrate specificity tests which were conducted using a turbidimetric assay method.Results:Maximum activity was at pH 7 and 8 and 40 ℃ for P.aeruginosa PLC,and pH 8-10 and 37 ℃ for B.cereus PLC.Both PLCs were inhibited by Pi at 5 mM or higher,whereas,PLC from B.cereus only was inhibited by EDTA.Activity of P.aeruginosa PLC was not affected by removing Zn~(2+) ions from reaction mixture or their replacement with Ca~(2+),Ba~(2+),Mg~(2+) or Mn~(2+)ions.Vis-a-vis,activity of B.cereus PLC was found to be metal ion dependent PLCs from both isolates were relatively thermostable and showed maximum affinity toward phosphatidylcholine.Sphingomyelin and phosphatidylethanolamine were not good substrates and phosphatidylinositol,phosphatidylserine,phosphatidylglycerol and cardiolipin could be considered nonsubstrates.Conclusions:Human body physiological conditions could favor activity of P.aeruginosa and B.cereus PLCs.These enzymes may participate in phosphate scavenging and virulence of producing isolates but not in autolysis.PLCs from both isolates are potential candidates for industrial use. 相似文献
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Samy Slimani Assia Haddouche Sabrina Haid Aicha Ladjouze-Rezig 《Rheumatology international》2011,31(2):273-276
Juvenile hyaline fibromatosis (JHF) is a rare autosomal recessive hereditary disorder (less than 80 cases reported), characterized
by multiple nodular lesions on the skin and musculoskeletal involvement, very debilitating because most adolescents and adults
become bedridden. Only 10 cases have been reported on JHF in adulthood. We report the case of a 34-year-old male patient in
whom clinical and histological findings were consistent with a mild JHF and focus on the radiographic features. The main purpose
of this report is to increase the information available related to the radiographic manifestations and prognosis of JHF. 相似文献
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Buscatti Izabel M. Casella Beatriz B. Aikawa Nadia E. Watanabe Andrea Farhat Sylvia C. L. Campos Lucia M. A. Silva Clovis Artur 《Clinical rheumatology》2018,37(5):1325-1325
Clinical Rheumatology - One of the author’s name on this article was incorrectly spelled as “Sylvia C. L. Fahrat” . The correct spelling is “Sylvia C. L. Farhat” and... 相似文献
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