Browsing by Author "Okoje, V. N."

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Developmental signaling genes in ameloblastoma
(Springer, 2015) Onyegbula, K.; Onile, O. S.; Okoje, V. N.; Anumudu, C. I.
Context: This study investigated the presence or absence of β-catenin and Patched1 (PTCH1) genes involved in the developmental pathway in ameloblastoma, in order to clarify the genetic etiology of this tumor. Aim: The aim of this study was to investigate whether PTCH1 and β-catenin genes are involved in the development of ameloblastoma. Subjects and Methods: Archived formalin-fixed paraffin-embedded specimens of 89 ameloblastoma cases from the year 2000 to 2010 were genotyped by polymerase chain reaction (PCR). Results: A total of 21 (23.6%) of the 89 ameloblastoma cases were positive for β-catenin gene, where 14/21 (66.7%) cases were mandibular ameloblastoma. Plexiform 5/21 (23.8%) and cystic 5/21 (23.8%) ameloblastoma were the most regular histological type positive for β-catenin. However, β-catenin positive was more in the feminine gender (11/19, 57.9%) than the masculine (8/19, 42.1%). Only one case was positive for PTCH1 gene and this was histologically a mandibular site and plexiform-type ameloblastoma. Conclusions: This study suggested that β-catenin and PTCH1 genes may play an important role in the pathogenesis of ameloblastoma.
Evaluation of the Haemodynamic and Metabolic Effects of Local Anaesthetic Agent in Routine Dental Extractions
(Springer, 2013) Akinmoladun, V. I.; Okoje, V. N.; Akinosun, O. M.; Adisa, A. O.; Uchendu, O. C.
Introduction: The systemic effects of adrenaline adminisitered during dental local anesthesia have been the subject of many studies. The purpose of this study was to investigate the haemodynamic and metabolic effects attributable to adrenaline injected during local anesthesia in dental extraction patients. Methods Apparently medically fit patients were included and randomized into two groups. Participants had breakfast before coming in for tooth extraction. The weight, height, blood pressure and pulse rate were measured and blood sample taken before administration of local anaesthetic injections. Blood pressure, pulse and blood sample were again taken at 15 and 30 min. Results: While the adrenaline group showed a modest increase between pre- and post-drug administration states, the control group showed no difference in median systolic blood pressures. Both groups showed a slight increase in diastolic blood pressure observed between pre- and post drug administration states. Also both groups showed no significant difference in median pulse rate throughout. Although blood glucose values were widely dispersed in the pre-drug administration state in both groups, the control group showed no difference in median values throughout. However, a modest increase was observed in the adrenaline group between pre- and post-drug administration states, which persisted beyond 30 min. Conclusion: The patients treated with local anesthesia with adrenaline showed a response similar to that observed in the control group.