Browsing by Author "David, Mosebolatan Susan"
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Item Antibiotic resistance patterns of bacteria isolated from Clarias gariepinus farms in Kaduna state, Nigeria(Iranian Journal of Veterinary Science and Technology, 2022-04-30) David, Mosebolatan SusanFish farming is increasing globally, with an increase in bacterial infections known to cause morbidity and varying mor tality, affecting the productivity and profitability of aquaculture. The objective of this study was to determine the antibi otics susceptibility and multiple antibiotic resistance index of bacteria isolated from fish in some selected fish farms in Kaduna State to ten commonly used antibiotics using the Kirby-Bauer disc diffusion method. In total, 84 bacteria were isolated from 75 Clarias gariepinus in this study, belonging to 12 genera. The antibiotic profile of the bacteria isolated displayed different sensitivity and resistance to the antibiotics used. The highest numbers of the Gram-positive (59.5%) and Gram-negative (69%) bacteria, respectively, were sensitive to ciprofloxacin compared to the other antibiotics. All the bacterial isolates displayed varying diversity of multidrug-resistant patterns. A total of 38 and 41 different resistance patterns for Gram-positive and Gram-negative respectively were observed. The multiple antibiotic resistance (MAR) index analysis reveals that 97.3% of the bacteria had a high MAR index value (> 0.2). In conclusion, there is a diversity of bacteria organisms within the fish farms that are pathogenic to both fish and humans. Therefore, there is a need to implement optimal preventive management measures and control the use of antibiotics.Item Antibiotic Susceptibility Profile of Uropathogens Isolated from Pregnant Women in Selected Hospitals in Ilorin(Nigerian Journal of Pharmaceutical Research, 2019-06) Olufadi-Ahmed, Haishat; Aliyu, Abdulmalik; David, Mosebolatan Susan; Kola-Mustapha, Adeola T.; Diyaolu, Ayobami HassanBackground: Urinary tract infection (UTI) is one of the most common infections among pregnant women and if untreated could lead to serious complications. Objective: This work was carried out to determine the prevalence rate of Enterobacteriaceae uropathogens and their antibiotics susceptibility profile among pregnant women attending two ante-natal clinics in Ilorin, Nigeria. Materials and Methods: A total of 111 pregnant women between the ages of 18-50 attending ante-natal clinic at University of Ilorin Teaching Hospital and Civil Service Hospital, Ilorin participated in the study. Mid-stream urine samples were collected and cultured on Cysteine-Lactose-Electrolyte Deficient agar. Presence of significant bacteriuria (> 105 cfu/mL) was determined using the plate count method. Antibiotic susceptibility testing was done using Kirby-Bauer disk diffusion technique. Results: Of the 111 urine samples collected, 27.9% of them were found positive on culture. Among the isolated organisms, Klebsiella oxytoca (25.7%) followed by Klebsiella pneumonia (22.9%), were the most prevalent. Isolated bacteria were resistant to at least one antibiotic with the highest resistance seen with amoxicillin (94.3%), streptomycin (77.1%) and nitrofurantoin (54. 3%). Amoxicillin-clavulanic acid (51.4%), ceftriaxone (51.4%), ceftazidime (34.3%), cotrimoxazole (51.4%), imipenem (2.9%), ciprofloxacin (14.3%) and gentamicin (25.7%) have the lowest rate of bacteria resistance. Of the isolates, 82.9% showed Multi-Antibiotic Resistance Index (MARI) ≥ 0.3. Conclusion: High prevalence of bacteriuria in both symptomatic and asymptomatic pregnant women was observed in the study areas. The alarming rate of multi-antibiotic resistance strain is therefore an indicator of a serious clinical problem in the community.Item Bacteriology of Some Liquid Herbal Products Sold in Ilorin- Kwara State Nigeria(Journal of Science and Practice of Pharmacy, 2019-12) David, Mosebolatan SusanPurpose: This study aims to establish the safety and/or potential public health dangers associated with the consumption of liquid herbal preparations (LHP) sold in Ilorin-Kwara State. Methods: Ten LHPs were randomly collected from three locations, kept under cold chain and transported to the Laboratory. All samples were evaluated for bacterial load using aerobic plate count method and bacterial isolates were presumptively identified using standard microbiological methods. Furthermore, Gram negative bacteria were identified using 12A Microbact ® Identification kits. Results: Sixty percent (60%) were fresh and faint, 4 (40%) were stale and putrid in smell as well as free of foreign matter. pH and bacterial load of samples ranged from 3.60 to 9.75 and 2.5 x 102 to 4.4 x 106 CFU/ mL respectively. Five (5) genera of bacteria, namely; Klebsiella species 10 (29.41%), Bacillus subtilis 8 (23.53%), Enterobcter spps. 7 (20.59%), Staphylococcus aureus 6 (17.65%) and Serretia marcescens 3(8.82%) were isolated from these LHPs. All isolates were resistant (100%) to Sulphamethoxazole trimethoprim combination. Amoxocillin clavulanate was active against 62.50% of K. pneumonia and S. marcescens isolates. Also 50% of K. oxytoca and E. gergoviae were susceptible to Amoxocillin clavulanate combination. Approximately, 8 (80%) of LHPs had bacterial load of 2.5 x 102 to 4.4 x 106 CFU/ mL and 2 (20%) yielded no growth. In addition, 40% of LHPs had bacterial load of 106 CFU/mL beyond the 104 CFU/mL permissible limit stated by European Pharmacopoeia. Conclusion: The observed high bacterial load and the presence of S. aureus as well as enteric bacteria of public health importance in these LHPs underscore the potential risk inherent in the consumption of these preparations. Therefore, public health awareness campaign on the dangers of unapproved LHPs consumption should be instituted. Key words: Liquid herbal preparations, bacterial contaminants, Ilorin metropolisItem Biofilm Detection and Antibacterial Susceptibility Pattern of Isolates from In-patients with Urinary Tract Infection in a Tertiary Hospital(Journal of pharmaceutical research, development and practice, University of Ilorin, 2018-12) Aliyu, Abdulmalik; Bello, Ronke Hadiyyah; David, Mosebolatan Susan; Olufadi-Ahmed, Haishat Yetunde; Salami, Omatseye; Itodo, Ene; Kola-Mustapha, Adeola T.A survey for the detection of biofilms amongst uropathogens was conducted in a Medical ward of a Tertiary hospital in Ilorin, Kwara State. This was done to determine the prevalence of biofilm producing uropathogens among patients with CA-UTI (Catheter-Associated Urinary Tract Infection) using MTP (microtitre plate) method. Effect of media variations in the production of biofilms and the antibiogram pattern of the isolates were also determined. Out of the 50 urine samples collected and analyzed, 27 (54.0 %) yielded growth and 28 isolates were identified. Klebsiella pneumoniae was the most prevalent (42.9 %), followed by Staphylococcus aureus (35.7 %) and Pseudomonas aeruginosa was the least (21.4 %). A total of 59. 3 % of the isolates were resistant to various antibiotics used and 39.3 % of the isolates were found to be multiple antibiotic resistant. Of the 28 uropathogens isolated, 21 (75.0 %) were biofilm formers comprising of 17.9 % high biofilm formers and 57.1 % of moderate biofilm formers while 25.0 % did not form biofilm in BHIsuc. High biofilm formation was observed in Staphylococcus aureus. There was variation in biofilm formation with different media as more isolates (75. 0 %) produced biofilm in BHIsuc than in TSBglu (67.9 %). Clinical isolates of Staphylococcus aureus, Klebsiella pneumoniae and Pseudomonas aeruginosa have potential of biofilm production which could lead to relapse of disease condition and eventually treatment failure in CA-UTI.Item Molecular characterization of Extended Spectrum Beta- Lactamases producing Escherichia coli Isolated from Pregnant Women with Urinary Tract Infections Attending Ante- natal Clinics in Ilorin Metropolis.(Nigerian Journal of Pharmaceutical Research, 2021) David, Mosebolatan SusanItem Occurrence of Antimicrobial Resistance Uropathogenic Staphylococcus aureus Isolates from Pregnant Women Attending Antenatal Clinics within Ilorin(Nigerian Journal of Pharmaceutical REesearch, 2023) David, Mosebolatan SusanAbstract Background: Staphylococus aureus associated with urinary tract infection (UTI) has become a serious health problem especially with the emergence of methicillin resistant Staphylococus aureus (MRSA) due to the acquisition of mecA gene leading to increasing maternal and perinatal burden. This study aimed to evaluate the prevalence of antimicrobial resistance, β-lactamase production and methicillin resistance among uropathogenic S. aureus among pregnant women attending selected antenatal clinics in Ilorin. Methods: Forty-five (45) out of 79 presumptive uropathogenic S. aureus isolated over a period of 12 months from urine samples of pregnant women were identified using standard bacteriological methods. Antibiogram studies was performed using gentamicin (CN-10µg), ciprofloxacin (CIP-5µg), ofloxacin (OFX-5µg), tetracycline (TE-30µg), sulphamethaxozole-trimethoprim (SXT-25µg), ampicillin (AMP-10 µg), penicillin G (P-10 units), nitrofurantoin (F 30 µg) and cefoxitin (FOX-30 µg) for the detection of MRSA by disc diffusion method. Furthermore, detection of β - lactamase producing S. aureus (BL-PSA) was carried out using Iodometric paper strip method. Results: Of the 45 S. aureus isolates, 80% were BL-PSA, MRSA (87%), exhibiting high resistance to penicillin G (97.8%), ampicillin (95.5%), tetracycline (77.8%) and sulphamethaxozole trimethoprim (64.4%). In addition, 56% were multidrug-resistant (MDR) exhibiting 20 different phenotypes with CN-P-SXT-TE-AMP-FOX (15.6%) being the majority. Notwithstanding, S. aureus isolates showed high sensitivity to nitrofurantoin (93.3%) and ofloxacin (91.1%). Conclusion: This study established an increasing resistance of S. aureus to different classes of antibiotics which emphasize the need for constant surveillance to monitor antimicrobial resistance trends. Routine screening for BL PSA and MRSA among uropathogenic S. aureus is also advocated in order to reduce the development and spread of MDR isolates.Item Phytochemical, Antioxidant and Antimicrobial activities of the Hydroalcoholic Extract of the Roots of Adenodolichos paniculatus against selected Pathogenic Microorganisms(The Pharmaceutical Journal of Kenya, 2022) David, Mosebolatan SusanDrugs derived from natural sources present a significant alternative therapy in the management of infectious diseases. The increasing resistance of pathogenic microorganisms to orthodox medicine has necessitated the search for alternative means of treatment. This study aimed at evaluating the phytochemicals, antioxidant and antimicrobial activities of the hydroalcoholic extract of the roots of Adenodolichos paniculatus against selected pathogenic microorganisms. Evaluation of phytochemical constituents was done using standard procedures and the antioxidant activity was evaluated using 2,2-diphenyl-2-pic ryl-hydrazyl. Antimicrobial activity was investigated using f ifteen pathogenic organisms, which included five gram-positive and seven gram-negative bacterial strains and three fungal strains using Agar diffusion method. The zones of inhibition of the extract against the test organisms, their minimum inhibitory concentrations (MIC) as well as the minimum bactericidal/fungicidal concentrations (MBC/ MFC) were determined. The extract was found to contain steroids, flavonoids, alkaloids and saponins. The total phenols, flavonoids, alkaloids and saponins were found to be 1.427±0.02 mg/g gallic acid, 0.4239±0.19 mg/g quercetin, 5% and 75.23% respectively. The antioxidant activity at concentrations of 7.53 and 15.51 µg/mL were not statistically different from that of vitamin C (P<0.05) and the IC50 (Half-maximal inhibitory concentration) found to be 4.906 µg/mL. The zones of inhibition ranged from 22 – 47 mm while the MIC and MBC/MFC was observed to be 5 to 10 mg/ mL, and 10 to 40 mg/mL respectively. The availability of phytochemicals with remarkable antioxidant activities and the demonstration of antimicrobial activity against gram-positive, gram-negative bacteria and fungi strains show that A. paniculata root is a potential source for the production of antioxidants as well as antimicrobial drugs. Key Words: Adenodolichos paniculatus, antimicrobial activity, antioxidant activity, Phytochemical, zone of inhibition, hydroalcoholic extract.Item Plasmid Profile of Multidrug Resistant Isolates from Water and Fish(Journal of pharmaceutical research, development and practice, University of Ilorin, 2018-12) Olufadi-Ahmed, Haishat Y.; Aliyu, Abdulmalik; Ibrahim, Y.K.E; David, Mosebolatan Susan; Bello, Ronke HadiyyahPlasmids are extrachromosomal genetic material that can replicate independently and usually harbour antibiotic resistance genes. This study evaluated the presence and sizes of plasmid from multiple antibiotic resistant (MAR) isolates from water and fish using acridine orange as a plasmid curing agent. The minimum inhibitory concentration (MIC) of acridine orange to the 22 MAR ranged between 0.625 – 5.0 mg/mL. Majority (86.4 %) of the MAR isolates lost their resistant and became susceptible to more antibiotics indicating that their resistance was plasmid encoded. As much as 68.4 % of the isolates had one or more plasmid bands with sizes varying from 1.0 -3.0 kbp. The presence of plasmids - carrying MAR isolates in fish and river may heighten the dissemination of antibiotic resistance genes to the environment which will pose a serious threat to the human health.Item Potential Antibacterial Activity of Two Important Local Chewing Sticks “Fagara zanthoxyloides and Distemonanthus benthamianus” along with Antioxidant Capacities(Dhakar University Journal of Pharmaceutical Sciences, 2019-12) David, Mosebolatan SusanABSTRACT: In order to authenticate and ascertain the various claim by the rural dwellers that depend on chewing sticks for their oral hygiene and protection against innumerable diseases, the antibacterial activity of the roots of Fagara zanthoxyloides and Distemonanthus benthamianus were evaluated. Preliminary phytochemical screening was carried out using standard methods. In-vitro antibacterial activity of the methanol extracts of both plants was also carried out using the agar well diffusion method against standard strains of Staphylococcus aureus ATCC 25923, Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Salmonella typhii ATCC 14028, Citrobacter freundii ATCC 8090 and also some clinical isolates of Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae and Proteus mirabilis at different concentrations and ratios. Preliminary phytochemical screening showed that the extracts contained alkaloids, saponin, tannins, steroids, flavonoids, anthraquinones, cardiac glycosides and phenol. All the test microorganisms were susceptible to the inhibitory effect of the extracts at concentrations of 200 mg/ml and 500 mg/ml. F. zanthoxyloides had better antimicrobial activity with zones of inhibition ranging from 21.0 to 26.0 mm at 200 mg/ml and 24.3 to 29.3 mm at 500 mg/ml while D. benthamianus had zones of inhibition ranging from 17.7 to 26.7 mm at 200 mg/mL and 19.0 to 26.7 mm at 500 mg/mL. Some of the test microorganisms were resistant to the standard antibiotics (cefuroxime, ciprofloxacin, ofloxacin and gentamicin). Combinations of the extracts in ratios 50:50 and 75:25 yielded no increase in activity. The MIC and MBC for D. benthamianus ranged from 6.25 mg/ml to 100 mg/mL and 25 to 200 mg/ml, respectively while that of F. zanthoxyloides ranged from 1.56 mg/ml to 12.5 mg/mL and 50 to 200 mg/ml, respectively. The antimicrobial activity demonstrated by F. zanthoxyloides and D. benthamianus indicates that they would be valuable in the management of urinary, respiratory and gastrointestinal tracts infections while at the same time helping to mitigate the problem of antimicrobial resistance. Phenolic compounds of plants, among them flavonoids are the chief constituents, which have potent antioxidant activities. Key words: Antimicrobial, chewing sticks, gastrointestinal, respiratory, urinary, oro-dental pathogens