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    Investigation of ACE Genome Insertion/Deletion Correlation with Immunohistochemical Profile in Pituitary Adenomas
    (Turkish Neurosurgical Soc, 2013) Altas, Murat; Bayrak, Omer Faruk; Serefhan, Alpay; Silav, Gokalp; Coskun, Kerim Kenan; Cerci, Ajlan; Isik, Nejat
    AIM: The deletion polymorphism of the angiotensin-converting enzyme (ACE) genome causes neoplastic development in several organs by increasing the angiotensin 2 (A2) formation. In this study, we aimed to identify the ACE genome insertion/deletion polymorphism in pituitary adenomas and to compare it with the control group. MATERIAL and METHODS: Patients operated for pituitary adenomas were included in the study. Genomic DNA was extracted from tumoral tissues and peripheral blood samples of the patients by using the Miller method. Primary sequence was selected via targeting the polymorphic region of intron 16 of ACE genome 17q23. DNA samples were multiplied by PCR using HACE3s and HACE3as primers. RESULTS: Twenty-one operated cases were studied. In the study group; 44% of the patients were identified as DID, 33% of them as I/D and 23% of them as I/I. In 60%, D allele was identified. According to immunohistochemical investigation, we found that 100% of the patients with Cushing adenoma were D/D alleles. CONCLUSION: Presence of high rate of ACE genome deletion in patients with pituitary adenoma and grade 3-4 patients suggest that ACE genome polymorphism can be a risk factor for the development of pituitary adenomas.
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    A New Molecule in Aneurysmal Subarachnoid Hemorrhage: Dendroaspis Natriuretic Peptide
    (Turkish Neurosurgical Soc, 2014) Serefhan, Alpay; Altas, Murat; Cerci, Ajlan; Isik, Nejat; Elmaci, Ilhan
    AIM: Dendroaspis natriuretic peptide (DNP) is the most recently identified member of the natriuretic peptide family. Although DNP has similar structure and function to other members, it is genetically different. The other members are known to cause vasorelaxation but the effects of DNP on vascular structure still remains unclear. In this study, we aimed to find out the role of DNP in the development of vasospasm following aneurysmal SAH (subarachnoid hemorrhage). MATERIAL and METHODS: DNP levels of 17 patients diagnosed with aneurysmal SAH and 25 volunteers as control were measured. All SAH patients were treated with aneurysm clip. Five ml of venous blood sample was obtained on postoperative 1,3 and 7th days from each patient. Additionally, DNP levels were determined by obtaining cerebrospinal fluid (CSF) postoperative 1,3 and 7th days. RESULTS: Statistically significant difference was observed between cerebrospinal fluid DNP levels on day 1 and day 3 (P<0.05). CONCLUSION:This study suggests that DNP can be anticipated among molecules leading development of vasospasm. The findings of present study are believed to encourage further studies regarding receptors and receptor specific drugs.