Abstract... Cancer is one of the main problems facing the quality of human life and health services providers. Despite the causes of cancer are not totally defined, many factors are proposed to be carcinogenic or protectants. Zinc and selenium are considered as protectants because of their antioxidant activities. Therefore, Lower serum levels of zinc and selenium are expected in cancer patients than in healthy population.
This study is designed to compare the serum levels of (Zn, and Se) in cancerous and non-cancerous individuals.
To achieve the aim of the study, serum samples from 19 cancer patients and 23 healthy persons were collected, then samples were prepared and analyzed by Atomic Emission Spectrophotometer. Results were analyzed and graphed using Microsoft Excel and SPSS software, Student t- test was used to compare the means of cancer groups against control group.
Means of Serum zinc level in healthy individuals and cancer patients were 176.23 ppm and 101.75 ppm (p < 0.05) respectively, while serum selenium levels were 11 ppm and 3.36 ppm respectively (p < 0.05).
In conclusion, a significant difference in serum Zn and Se was found between the cancer patients and healthy individuals.
Abstract... Objective: To present the outcome of the external Dacryocystorhinostomy (Ext-DCR) by excision of posterior mucosal flaps as a primary procedure for chronic dacryocystitis. Materials and Methods: The present prospective study was conducted from January 2015 until June 2015 at Misurata Central Hospital. Detailed history of local nasal condition like chronic allergy and treatment or direct nasal trauma, in addition to full rhinological workup by E.N.T specialist was done for all cases to exclude the grossly deviated nasal septum, nasal polyps, hypertrophied turbinate and sinusitis. Blood diseases, History of anticoagulant intake was taken, also local eye examination of conditions like dry eye, rubbing lashes, mal-positioned eyelids, complete slitlamp examination, paralytic ectropion resulted from facial palsy were excluded from the study, finger lacrimal sac regurgitation test and irrigation of lacrimal system were done. Thirty patients have been admitted and prepared for full medical and anesthetist evaluation, investigated for blood and viral serology, informed consent pre-operatively. The success rate and complications were recorded over a follow-up period of 06 months. Results: The mean age of our study group was 40 years. There was a female predominant 21 (70%) with a Male: Female ratio of 1:2.3. Intraoperative complications were bleeding (accidental periostium and nasal mucosal trauma) in 16% cases, post-operative complications were recurrent epiphora and discharge in 13%, Silicon tube extrusion in 7%. Four patients had failed Ext-DCR after 06 months. In three cases, the obstruction of the bony ostium by granulation tissue 10% and in one case the sump syndrome 3% were the cause of failure of Ext-DCR. Conclusion: Ext-DCR surgery carries high success rate 87% when it is done as a primary procedure for treating chronic dacryocystitis.
Abstract... In this project we concentrate on the Kronecker product and its properties and introduce the proofs of the main theorem related with.