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        Diversity and Phorophyte Preference of Vascular Epiphytic Flora on Avenues within the University of Port Harcourt, Nigeria

        Alex, Amininim,Chima, Uzoma Darlington,Ugbaja, Uzoamaka Deborah Institute of Forest Science 2021 Journal of Forest Science Vol.37 No.3

        This study evaluated the species composition, diversity and phorophyte preference of epiphytes at the University of Port Harcourt located in southern part of Nigeria. Purposive sampling technique was used to select sites representing major avenues in the three campuses (Abuja, Choba and Delta) of the University. Data were collected on species name of phorophytes, number of individuals, diameter at breast height (dbh) and height, and species/number of epiphytes present on them. The points/sections of attachment of epiphytes on phorophytes were also recorded. A total of eight species of epiphyte belonging to six families were recorded in the study. Species diversity was higher in Abuja campus (Simpson 1-D=0.81; Shannon H=1.79), followed by Choba campus (Simpson 1-D=0.73; Shannon H=1.09) and Delta campus (Simpson 1-D=0.56; Shannon H=0.93). Species richness was highest in Abuja campus (n=8) followed by Delta campus (n=4) and Choba campus (n=3). Similarity in epiphyte species composition was highest between Choba and Delta campuses (85.71%), followed by Delta and Abuja campuses (66.67%) and lowest between Choba and Abuja campuses (54.55%). The family-Polypodiaceae, had the highest number of species (n=3). Microgramma owariensis had the highest relative abundance (27%) followed by Platycerium bifurcatum (26%) while Tillandsia utriculata and Peperomia pellucida had the least relative abundance (3%). Epiphyte abundance was weakly correlated with both the dbh and height of phorophytes. However, epiphytes were more abundant on phorophytes with rough/scaly/corky/flaky barks than on those with smooth barks. The planting of avenue tree species with rough barks is recommended to enhance the diversity of epiphytes in the study area.

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        Appraisal of Acalypha wilkesiana Godseffiana mitigating effects against carbon tetrachloride (CCl4)-induced oxidative impairment in female wistar rat

        Dorcas Ibukun Akinloye,Olatunbosun Samuel Sojinu,Regina Ngozi Ugbaja,Samuel Agemo,Moses Oluwasegun Akintubuwa,Tolulope Julius Bolaji 경희대학교 융합한의과학연구소 2023 Oriental Pharmacy and Experimental Medicine Vol.23 No.2

        Acalypha wilkesiana godseffiana Mull arg leaf is traditionally used among Yorubas in Southern Nigeria for the treatment of malaria, dermatological disorders, gastrointestinal disorders and diabetes mellitus. It has also been reported to have in vitro antioxidant capacities. This study accessed the mitigating effects of Acalypha wilkesiana godseffiana ethanol extract (EEAW) against CCl4-induced oxidative impairment using specific activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR) and levels of glutathione (GSH), vitamin C (Vit. C), malonialdehyde (MDA), nitric oxide (NO), percentage DNA fragmentation as well as immunohistochemical expression of the cytoplasmic expression of p38, p16 and p53 proteins as bio-markers. Induction of oxidative damage in female wistar rats were done by intraperitoneal injection of 1 ml.kg−1 body weight of CCl4 (50% v/v using Olive oil as vehicle). Administration of the EEAW ameliorated CCl4-induced oxidative impairment by up-regulating p16 with concomitant down-regulation of p38 and p53 protein expressions. Serum concentration of GSH and vitamin C was significantly increased when compared to the CCl4-intoxicated group. The decrease in the specific activities of SOD, CAT, GPx, GR as well as increase in levels of MDA, NO and percentage DNA fragmentation induced by CCl4-intoxication were significantly mitigated by the extract treatment. These findings indicated that EEAW possesses some mitigating effects against CCl4-induced oxidative impairment.

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