scholarly works

Permanent URI for this collectionhttps://repository.ui.edu.ng/handle/123456789/383

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Start date: 2010End date: 2019

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    Use of antibiotics among non-medical students in a nigerian university
    (2013) Sanya T.E; Titilayo O.F; Adisa R; Showande J.S
    Background: Antibiotic misuse is a major contributory factor to treatment failure, antibiotic resistance and high healthcare costs. Objectives: To evaluate level of self-reported antibiotic misuse among non-medical undergraduate students of a Nigerian university. Methods: Respondents’ knowledge of antibiotics and disposal system for left-over antibiotics were explored using a structured questionnaire. Data were summarized with descriptive statistics. Chi square was used to evaluate relationship between specific categorical variables and respondents’ opinions with p<0.05. Results: More than half the respondents obtained their antibiotics through doctor’s prescriptions (273; 68.3%). The study revealed gross antibiotic misuse with majority, (298;74.5%) either by keeping left-over antibiotics for future use or throwing it away with refuse. Respondents (289; 72.3%) sometimes forgot to take the antibiotics. Financial constraints (73; 18.3%), long duration of treatment (70; 17.5%), side effects experienced (60;15.0%), polypharmacy (56;14.0%), tablet size (45;11.3%), and perceived low level of confidence in the prescriber (11; 2.8%) were major reasons for non-adherence. Course of study of respondents had no significant effect on respondents’ knowledge or adherence (p>0.05). Conclusion: Misuse of antibiotics among non-medical undergraduate students in a Nigerian university setting is pervasive suggesting an urgent need for enlightenment on rational use and disposal of antibiotics.
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    Remedies for glucose intolerance – are traditional herbal concoctions for diabetes effective?
    (2015) Showande S.J.; Bello J.J
    Background:Preventing or delaying the onset of diabetes in prediabetes has the potential to reduce the disease prevalence. Objective:The effectiveness of traditional herbal concoctions for diabetes in ameliorating glucose intolerance was investigated. Material and Methods:Oral glucose tolerance test (OGTT) was carried out by giving 500 mg/kg and 1000 mg/kg of individual plant extract and their aqueous herbal concoctions made from Musa sapientum + Allium sativum + Tetracarpidium conophorum; Gongronema latifolia + Bauhinia monandra; and Alstonia boonei + Mangifera indica to groups of rats, 30 and 60 minutes respectively prior to 3 g/kg of glucose load. Blood glucose levels were determined at 0, 10, 20, 30, 45, 60, 90, and 120 minutes post administration. Area under the curve (AUC) for OGTT and glycemic index were calculated and compared with the vehicle control and metformin (100 mg/kg). Level of significance was set at P<0.05. Results:Oral glucose tolerance test AUCs of individual plants were significantly lower than that of the vehicle control (P<0.05) but comparable with that of metformin (P>0.05) when given 30 minutes prior to glucose load. The OGTT curve AUCs of the three herbal concoctions were significantly higher than the two controls (P>0.05). Glycemic index of the concoctions were significantly higher than that of metformin (P>0.05) Conclusion:The herbal concoctions were not effective in ameliorating glucose intolerance. Individual plants were more effective when administered 30 minutes prior to glucose load. The individual herbs showed potentials to delay the onset of diabetes. Further investigations should be conducted on the numerous herbal concoctions used for diabetes.
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    Potential inhibition of major human cytochrome p450 isoenzymes by selected tropical medicinal herbs—implication for herb–drug interactions
    (2018) Showande S.J.; Fakeye T.O.; Kajula M.; Hokkanen J.; Tolonen A.
    Background: Increasing use of medicinal herbs as nutritional supplements and traditional medicines for the treatment of diabetes, hypertension, hyperlipidemia, and malaria fever with conventional drugs poses possibilities of herb–drug interactions (HDIs). The potential of nine selected widely used tropical medicinal herbs in inhibiting human cytochrome P450 (CYP) isoenzymes was investigated. Materials and methods: In vitro inhibition of eight major CYP isoenzymes by aqueous extracts of Allium sativum, Gongronema latifolium, Moringa oleifera, Musa sapientum, Mangifera indica, Tetracarpidium conophorum, Alstonia boonei, Bauhinia monandra, and Picralima nitida was estimated in human liver microsomes by monitoring twelve probe metabolites of nine probe substrates with UPLC/MS- MS using validated N- in- one assay method. Results: Mangifera indica moderately inhibited CYP2C8, CYP2B6, CYP2D6, CYP1A2, and CYP2C9 with IC50 values of 37.93, 57.83, 67.39, 54.83, and 107.48 μg/ml, respectively, and Alstonia boonei inhibited CYP2D6 (IC50 = 77.19 μg/ml). Picralima nitida inhibited CYP3A4 (IC50 = 45.58 μg/ml) and CYP2C19 (IC50 = 73.06 μg/ml) moderately but strongly inhibited CYP2D6 (IC50 = 1.19 μg/ml). Other aqueous extracts of Gongronema latifolium, Bauhinia monandra, and Moringa oleifera showed weak inhibitory activities against CYP1A2. Musa sapientum, Allium sativum, and Tetracarpidium conophorum did not inhibit the CYP isoenzymes investigated. Conclusion: Potential for clinically important CYP- metabolism- mediated HDIs is possible for Alstonia boonei, Mangifera indica, and Picralima nitida with drugs metabolized by CYP 2C8, 2B6, 2D6, 1A2, 2C9, 2C19, and 3A4. Inhibition of CYP2D6 by Picralima nitida is of particular concern and needs immediate in vivo investigations.
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    Pharmacy students’ proclivity towards entrepreneurship – a sign of future innovation in pharmaceutical care service delivery
    (2019) Showande S.J.; Durowaiye M. A.
    Background:Entrepreneurial inclination is linked with improved pharmaceutical care service innovations and improvements. Objective: This study examined the propensity of pharmacy students towards entrepreneurship and factors influencing this. Material and Methods:Two hundred and eighty-one pharmacy students at the University of Ibadan participated in a two-year prospective study using a self–administered validated Pharmacy Students Entrepreneurial Orientation summated scale questionnaire with five subscales in seven-points Likert scale type graded responses. Mean and percentage mean scores were determined with a high mean score indicative of entrepreneurial tendency. Results:Percentage mean score for PSEO were 88.5% and 88.8% for the first and second year of the survey, respectively. Post-graduation business ownership intentions were high (83.0%) in both years. These intentions had significantly higher mean scores on PSEO scale (p<0.001), empathic super salesperson subscale (p=0.007), innovativeness subscale (p<0.001), and risk taking subscale (p=0.024), in the first year of survey. Pharmacy students who had taken business courses had higher PSEO mean scores than those who had not taken business courses (p=0.003). Male pharmacy students were more likely to take risks more than their female counterparts in the first year of the study (p=0.035). Conclusion:Pharmacy students maintained a high level of entrepreneurial tendency in both years of the study with most students aspiring to become business owners. Male pharmacy students were more inclined to take risk and hope to be innovative in pharmaceutical care services. To further strengthen entrepreneurial inclination, pharmacy schools curricula should include entrepreneurial courses. Keywords
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    Impact of pharmacists’ training on oral anticoagulant counseling: a randomized controlled trial
    (2019) Showande S.J; Edidiong N.O.
    Objective: The study evaluated the impact of oral anticoagulant counseling training on the quality of counseling provided by pharmacists. Methods: A prospective RCT was conducted among 33 pharmacists from 23 pharmacies in Ibadan, Nigeria. Six mystery patients (MPs) who were either warfarin-naïve, experienced adverse drug reaction (ADR), or drug interaction (DI) to warfarin were used to assess pharmacists’ oral anticoagulant counseling quality at pre- and post-intervention. A 2-week online oral anticoagulant counseling training was given to the intervention group pharmacists. Quality of counseling was categorized as poor (0–20 %), fair (21–50 %), moderate (51–80 %), and optimal (81–100 %). Results: At pre-intervention, the quality of oral anticoagulant counseling provided to the MPs was poor. Post-intervention, the quality improved among pharmacists in the intervention group, from poor to fair for both warfarin-naïve MP and MP who experienced DI, and from fair to moderate for MP with ADR. Conclusion: Short-term online oral anticoagulant counseling training improved the quality of counseling provided by community pharmacists to mystery patients on warfarin. Practice implication: Online oral anticoagulant counseling training may be employed by pharmacists’ professional bodies intermittently to improve oral anticoagulant counseling
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    Management of uncomplicated gastric ulcer in community pharmacy: a pseudo‑patient study
    (2019) Showande S.J; Adenike R.A.
    Background Increasing role of community pharmacists sometimes demands the diagnoses of minor ailments using appropriate questioning skills and recommendation of over-the-counter medications to patients seeking self-care. Objective To evaluate community pharmacists’ questioning and diagnostic skills of minor ailment complaints, and the appropriateness of medication(s) recommendations made. Setting One hundred and thirty-one community pharmacies in Ibadan, Nigeria. Method A cross-sectional survey employing pseudo-patient study method. The pseudo-patient visited 131 community pharmacies from June 2017 to January 2018 and complained of stomach ache. The conversation between the pharmacists and pseudopatient were audio-taped and transcribed verbatim. Two criteria were used to evaluate the questioning skill of the community pharmacists. One of the criteria was developed by a six-membered panel and had 13 questions while the other contained five questions:—Who is it for? What are the symptoms? How long have the symptoms been present? Action taken? and Medication used.? Questioning skill of the community pharmacists was classified based on the median scores of these two criteria as: poor, moderate and optimal. The diagnoses made by the community pharmacists from the pseudo-patients complaints were compared with the expected diagnosis of uncomplicated gastric ulcer caused by the use of ibuprofen. Recommendations for the pseudo-patients minor ailment were also compared with the Nigeria standard treatment guideline. Main outcome measure Pharmacists’ questioning skill, types of diagnosis made and appropriateness of medications recommended. Results The median scores for the questioning skill criterion containing 5 and 13 questions were 2 and 4, respectively; showing poor questioning skill. Differential diagnoses of gastric ulcer, dyspepsia, gastroesophageal reflux, and hyperacidity were made by 92 (67.4%) pharmacists but 3 (2.3%) correctly diagnosed the pseudo-patients’ minor ailment as uncomplicated gastric ulcer caused by short-term use of ibuprofen. Antacids were recommended in line with the standard treatment guideline by 46 (35.7%) pharmacists while proton pump inhibitors were recommended by 6 (4.7%) pharmacists. None advised the withdrawal of the provocative factor according to the treatment guideline. Conclusion The questioning skill of the community pharmacists in this setting was poor. Few community pharmacists diagnosed the pseudo-patients’ minor ailment correctly. Also, recommendations were mostly inappropriate compared with the standard treatment guideline.
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    In Vitro Modulation Of Cytochrome P450 Isozymes And Pharmacokinetics Of Caffeine By Extracts Of Hibiscus Sabdariffa Linn Calyx
    (2019) Showande S.J; Igbinoba S.I.; Kajula M.; Hokkanen J.; Tolonen A.; |Adegbolagun O.M.; Fakeye T.O.
    Background: Hibiscus sabdariffa beverage (HSB) is widely consumed as a medicinal herb and sometimes used concomitantly with drugs. This study evaluated the in vitro inhibitory potential of the aqueous extract of H. sabdariffa calyces (AEHS) on selected cytochrome P450 (CYP) isozymes and the effect of HSB on the pharmacokineticsofcaffeineinvivo. Methods:InvitroinhibitionsofeightmajorCYPisozymesbyAEHSwereestimatedbymonitoringCYP-specific modelreactionsof10CYPprobesubstratesusingN-in-oneassaymethod.Subsequently,anopen,randomized, two-periodcrossoverdesignwasusedtoevaluatetheeffectofHSBonthepharmacokineticsofsingle-dose200 mg caffeine in six healthy human volunteers. Blood samples were obtained at specific times over a 24 h period. Probe drugs and metabolites were analyzed in their respective matrices with ultra-performance liquid chromatography/mass spectrometer/mass spectrometer and reversed-phase high-performance liquid chromatography/ultravioletdetection. Results:TheH.sabdariffaaqueousextractweaklyinhibitedtheselectedCYPisozymesinvitro,withIC50of >100 μgmL-1 intheorderofCYP1A2>CYP2C8>CYP2B6»CYP2D6>CYP2C19>CYP3A4>CYP2A6>CYP2C9. HSBdecreasedterminalt1/2andTmaxofcaffeineby13.6%and13.0%,respectively,andincreasedCmaxby10.3%. Pointestimatesofprimarypharmacokineticendpoints,Cmax=1.142(90%confidenceinterval(CI)=0.882,1.480) andAUC0–∞=0.992(90%CI=0.745,1.320),wereoutsidethe90%CIof0.8–1.25bioequivalencelimits. Conclusion:TheaqueousextractofH.sabdariffaweaklyinhibitedeightCYPisozymesinvitro,butHSBmodified theexposuretocaffeineinhuman.CautionshouldbeexercisedinadministeringHSBwithcaffeineorsimilar substratesofCYP1A2untilmoreclinicaldataareavailable.
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    In vitro inhibitory activities of the extract of hibiscus sabdariffa l.
    (2013) Showande S.J.; Fakeye T.O; Tolonen A; Hokkanen J.
    Literature is scanty on the interaction potential of Hibiscus sabdariffa L., plant extract with other drugs and the affected targets. This study was conducted to investigate the cytochrome P450 (CYP) isoforms that are inhibited by the extract of Hibiscus sabdariffa L. in vitro. The inhibition towards the major drug metabolizing CYP isoforms by the plant extract were estimated in human liver microsomal incubations, by monitoring the CYP-specific model reactions through previously validated N-in-one assay method. The ethanolic extract of Hibiscus sabdariffa showed inhibitory activities against nine selected CYP isoforms: CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1 and CYP3A4. The concentrations of the extract which produced 50% inhibition of the CYP isoforms ranged from 306 µg/ml to 1660 µg/ml, and the degree of inhibition based on the IC50 values for each CYP isoform was in the following order: CYP1A2 > CYP2C8 > CYP2D6 > CYP2B6 > CYP2E1 > CYP2C19 > CYP3A4 >> CYP2C9 >> CYP2A6. Ethanolic extract of Hibiscus sabdariffa caused inhibition of CYP isoforms in vitro. These observed inhibitions may not cause clinically significant herb-drug interactions; however, caution may need to be taken in co-administering the water extract of Hibiscus sabdariffa with other drugs until clinical studies are available to further clarify these findings.
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    Evaluation of the extent and pattern of use of herbal
    (2014) Showande S.J; Amokeodo O.S.
    Purpose: To evaluate the extent and pattern of use of herbal bitters among students. Methods: This was a cross-sectional study where pre-tested structured questionnaires were administered to 1000 students. The questionnaire elicited information on the extent and pattern of use, self-reported indications, side effects experienced and possible drugs that were concomitantly coadministered with herbal bitters. Pearson Chi square, Fisher exact test and Relative risk ratio were used to detect association between gender and self-reported indications and side effects experienced with herbal bitters at a level of significance of p < 0.05. Results: The response rate and extent of use were 96 % and 40.9 % respectively. Herbal bitters were used for claims such as cleansers 88 (40.2 %), anti-infectives 48 (21.1 %), for rejuvenation 32 (14.0 %), and for weight loss 14 (6.1 %). Self-reported side effects included dizziness 49 (22.0 %), loss of taste 46 (20.6 %) and nausea and vomiting 22 (9.7 %). Herbal bitters were also co-administered with antimalarials 22 (6.3 %); analgesics 16 (4.5 %) and herbal supplements 13 (3.7 %). Reports of students using two different types of herbal bitter concurrently 15 (3.9 %) were also garnered. Male students experienced more side effects than females (p < 0.05). Conclusion: The co-administration of herbal bitters with allopathic medicines and the use of more than one herbal bitter at a time reported in this study can be addressed by the appropriate health authorities through proper educational programme.
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    Attitude and opinion of nigerian community pharmacists to self medication practices
    (2012) Fakeye T. O.; Adisa R.; Showande S. J. S.
    This study evaluated the attitude and opinion of Nigerian community pharmacists on self medication practices with respect to the definition, advantages and disadvantages of self medication, ailments for which self medication should be allowed, as well as measures that may be instituted to ensure appropriate self medication practices. Pretested structured questionnaires were administered to licensed community pharmacists practicing in Southwestern Nigeria between December, 2009 and July, 2010. Descriptive statistics were used to summarize the data. Mann Whitney U and Kruskal Wallis tests were used to evaluate the respondents’ opinions in ordinal variables with p < 0.05 considered statistically significant. Respondents with postgraduate qualification (p < 0.05) believed that self medication solely done by patients without guidance of a health care professional may lead to mismanagement or subtherapeutic management of diseases (66; 91.66%), medication errors and likelihood of disease complications (68; 93.15%). Years of practice had a significant effect on community pharmacists’ perception of advantages of self medication (p < 0.05). Rigorous monitoring of drug advertisement in the media might help in controlling the practice of self medication (63, 86.30%). Respondents believed that keeping the identity of the medications (29; 39.73%) and diagnosis details (19; 27.14%) unknown to patients is unethical. Self medication may be acceptable for fever (53; 74.65%), diarrhea (46; 67.65%) and cough (39; 53.62%), but with specific time limits, for patients on chronic medication who have stable clinical conditions, including asthma (46; 66.67%), hypertension (36; 51.43%) and diabetes (37; 52.86%). Community pharmacists in Southwestern Nigeria possess a good understanding of the concept of self medication, believed the practice should not be discouraged in totality, but should be practiced under controlled conditions, and that public enlightenment may help to ensure safe self medication practices.