comparative study on differnt methods used for deterination of blood cholestrol

SUMMARY AND CONCLUSIONThe recent development of dry chemistry technology represents new concepts in the technique of routine clinical-chemical analysis. Such techniques have the advantage that they do not require sophisticated operational skills. Also this type of analysis is accessible both to central and satellite laboratories since reagents are supplied in packaged forms. Thus the performance of dry and wet chemistry must be comparable bothwith respect to sensitivity and precision.The Reflotron is a new dry chemistry analytical system which affers a precalibrated reagent system and automatic monitoring of the reaction. In addition, it has a means of separating erythrocytes, so minimize technicalcells in these diseases, may be helpful for new therapeutic trials. Similar approaches might be applicable to the treatment of other skin diseases that are characterized by angiogenesis such as psoriasis and skin malignancies. In contrast, the angiogenic activity of VEGF is sufficiently potent to induce a therapeutic effect. It can be used for therapeutic induction of angiogenesis that may be beneficial in the treatment of delayed wound healing, chronic venous ulcers, arterial insufficiency and enhancing graft survival.• This study emphathies the importance of VEGF in thepathogenesis of psoriasis, basal cell carcinoma, squamous cell carcinoma and bullous erythema multiforme. Further studies for the expression of VEGF in other skin diseases may be helpful in understanding of other aspects in the pathogenesis of these diseases.• The important role ofVEGF in the pathogenesis of certain skindiseases as psoriasis and skin cancers directs the attention for using anti-VEGF agents for the treatment of these diseases.• The angiogenic properties of VEGF can be utilized fortherapeutic purposes as in improving wound healing and enhance skin graft survival, and in the treatment of chronic venous ulcers and arterial insufficiency.• As normal hair growth and size are dependent on VEGF-induced perifollicular angiogenesis, therapeutic uses ofVEGF and its antagonists in disorders of hair growth could be the target for future research studies.