Azza M. Hassan

Oil Palm Biomass Fibres and Recent Advancement in Oil Palm Biomass Fibres Based Hybrid Biocomposites

© 2012 Khalil et al., licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Oil Palm Biomass Fibres and Recent Advancement in Oil Palm Biomass Fibres Based Hybrid Biocomposites

Significance of autotaxin activity and overexpression in comparison to soluble intercellular adhesion molecule in thyroid cancer.

Background The objective of this study was to evaluate the role of autotaxin (ATX) activity and gene expression compared to soluble intercellular adhesion molecule-1 (sICAM-1) in thyroid carcinoma. Patients and Methods Sixty-five patients with thyroid swelling were included. There were 20 cases of simple multinodular goiter (group I), 15 cases of follicular adenoma (group II) and 30 cases of thyroid cancer (group III). Group III was further subdivided into negative and positive lymph nodes (group IIIa and IIIb; 22 and 8 cases, respectively). sICAM-1 concentration and ATX activity were measured using colorimetric enzyme-linked immunosorbent assay (ELISA), while ATX gene expression was detected by real-time polymerase chain reaction (PCR). Results sICAM-1 level, ATX activity and gene expression were significantly elevated in patients with thyroid carcinoma compared to other groups. The ATX activity showed significantly higher sensitivity and specificity than sICAM-1 (100% and 97.1% vs 93.3% and 88.6%, respectively). Both sICAM-1 and ATX values were significantly higher in patients with positive lymph nodes compared to those without lymph node involvement (p<0.001). Higher levels of ATX activity and gene expression were significantly correlated with larger tumor size and undifferentiated pathological subtype in thyroid carcinoma. In this respect, ATX was superior to sICAM-1. Conclusion Our data suggest that ATX activity and gene expression are reliable diagnostic and prognostic tools in thyroid carcinoma compared to sICAM-1.

Serum neopterin level in cases of pulmonary tuberculosis and pneumonia

Background: Pulmonary tuberculosis (TB) sometimes has diagnostic difficulties and a lot of differential diagnosis such as pneumonia. The aim of this work was to assess the role of serum neopterin in differentiating between pulmonary TB and pneumonia and to estimate the effect of antituberculous drugs for 2 months on serum levels of neopterin in patients with pulmonary TB. Patients and methods: We measured serum neopterin in patients with TB, pneumonia patients, and controls. Serum neopterin was measured again after 2 months of antituberculous therapy in patients with pulmonary TB. Results: Serum neopterin was significantly higher in tuberculous patients than in pneumonia patients, with a sensitivity of 90% and a specificity of 80% at an optimal cut-off value of 20.5 nmol/l. It decreased significantly after 2 months of antituberculous therapy in tuberculous patients. Conclusion: Serum neopterin levels significantly increase in pulmonary TB and correlate with the radiological extent of the disease. Combined anti-TB treatment decreases the levels of serum neopterin. Measurement of the serum neopterin levels may be useful in following up the drug response in pulmonary TB. Serum neopterin levels may also be helpful in discriminating pulmonary TB from pneumonia.