Displaying publications 61 - 80 of 2160 in total

Abstract:
Sort:
  1. Ahmad A, Dada AC, Usup G, Heng LY
    Mar Pollut Bull, 2014 May 15;82(1-2):26-38.
    PMID: 24725825 DOI: 10.1016/j.marpolbul.2014.03.028
    Median enterococci counts of beach water samples gradually increased at statistically significant levels (χ2: 26.53, df: 4; p<0.0001) with increasing proximity to river influx. The difference in proportion of antibiotic resistant enterococci in beach water and river water samples was statistically significant (p<0.05) for the tested antibiotics with river isolates generally presenting higher resistance frequencies. Virulence genes cyl, esp, gelE and asa were detected at varying frequencies (7.32%, 21.95%, 100% and 63.41% respectively) among river isolates. On the other hand, the prevalence of these genes was lower (0%, 20%, 67.27% and 41.82% respectively) among beach water isolates. Multi-Locus-Sequence-Typing analysis of Enterococcus faecalis presented four sequence types (ST) one of which shared six out of seven tested loci with ST6, a member of the clonal complex of multi-drug resistant strains associated with hospital outbreaks.
    Matched MeSH terms: Anti-Bacterial Agents/pharmacology
  2. Ahmad A, Khan MU, Moorthy J, Jamshed SQ, Patel I
    Pharm Pract (Granada), 2015 03 15;13(1):523.
    PMID: 25883690
    BACKGROUND: There is limited research on pharmacy specialization based differences with regards to usage of antibiotics.

    OBJECTIVE: To compare the knowledge, attitude and practice of Bachelor of Pharmacy (BPharm) and Doctor of Pharmacy (PharmD) students about usage and resistance of antibiotics in Southern India.

    METHODS: This was a cross sectional study involving final year BPharm and PharmD students studying in two private institutions located in Andra Pradesh, India. The study was conducted for the period of 3 months. The questionnaire was divided into 5 components: demographics, knowledge about antibiotic use, attitude towards antibiotic use and resistance, self-antibiotic usage, and possible causes of antibiotic resistance. The study questionnaire was assessed for reliability. Data were analysed by employing Mann Whitney and chi square tests using SPSS version 19.

    RESULTS: The sample size comprised of 137 students. The response rate was 76.11% for the study. There was a significant difference in the knowledge of antibiotic use in BPharm and PharmD students (Mean score: 5.09 vs 6.18, p<0.001). The overall attitude of PharmD students about antibiotic use and resistance was positive compared to BPharm students (Mean score: 3.05 vs 2.23, p<0.05). The self-antibiotic practices was higher in BPharm students than PharmD students (36.4% vs 20%, p<0.05). A significantly high number of PharmD students believed that empirical antibiotic therapy led to antibiotic resistance (19.5% versus 48%, P<0.05).

    CONCLUSION: PharmD students were more knowledgeable about antibiotic usage and resistance compared to BPharm students who did not have accurate and the much needed information about the same. Future interventions should be targeted towards educating the BPharm students so that they can implement the acquired knowledge in their practice.

    Matched MeSH terms: Anti-Bacterial Agents
  3. Ahmad A, Khan MU, Balkrishnan R
    Lancet Glob Health, 2016 08;4(8):e521.
    PMID: 27443777 DOI: 10.1016/S2214-109X(16)30093-6
    Matched MeSH terms: Anti-Bacterial Agents/administration & dosage*
  4. Ahmad A, Khan MU, Malik S, Mohanta GP, Parimalakrishnan S, Patel I, et al.
    J Pharm Bioallied Sci, 2016 Oct-Dec;8(4):335-340.
    PMID: 28216959 DOI: 10.4103/0975-7406.199340
    BACKGROUND: Acute gastroenteritis and respiratory illnesses are the major causes of morbidity and mortality in children under 5 years of age. The objective of this study was to evaluate the prescription pattern of antibiotic utilization during the treatment of cough/cold and/or diarrhea in pediatric patients.

    METHODS: A descriptive, cross-sectional study was conducted for 6 months in pediatric units of a tertiary care hospital in South India. Children under 5 years of age presenting with illness related to diarrhea and/or cough/cold were included in this study. Data were collected by reviewing patient files and then assessed for its appropriateness against the criteria developed in view of the Medication Appropriateness Index and Guidelines of the Indian Academy of Pediatrics. The results were expressed in frequencies and percentages. Chi-square test was used to analyze the data. A P < 0.05 was considered statistically significant.

    RESULTS: A total of 303 patients were studied during the study period. The mean age of the patients was 3.5 ± 0.6 years. The majority of children were admitted mainly due to chief complaint of fever (63%) and cough and cold (56.4%). The appropriateness of antibiotic prescriptions was higher in bloody and watery diarrhea (83.3% and 82.6%; P < 0.05). Cephalosporins (46.2%) and penicillins (39.9%) were the most commonly prescribed antibiotics, though the generic prescriptions of these drugs were the lowest (13.5% and 10%, respectively). The seniority of prescriber was significantly associated with the appropriateness of prescriptions (P < 0.05). Antibiotics prescription was higher in cold/cough and diarrhea (93.5%) in comparison to cough/cold (85%) or diarrhea (75%) alone.

    CONCLUSIONS: The study observed high rates of antibiotic utilization in Chidambaram during the treatment of cough/cold and/or diarrhea in pediatric patients. The findings highlight the need for combined interventions using education and expert counseling, targeted to the clinical conditions and classes of antibiotic for which inappropriate usage is most common.
    Matched MeSH terms: Anti-Bacterial Agents
  5. Ahmad A, Patel I, Khan MU, Babar ZU
    Lancet Infect Dis, 2017 06;17(6):578-579.
    PMID: 28555576 DOI: 10.1016/S1473-3099(17)30268-2
    Matched MeSH terms: Anti-Bacterial Agents/pharmacology*
  6. Ahmad A, Nor J, Abdullah AA, Tuan Kamauzaman TH, Yazid MB
    Malays J Med Sci, 2021 Apr;28(2):72-83.
    PMID: 33958962 DOI: 10.21315/mjms2021.28.2.7
    Background: Emergency departments (EDs) are frequently misused for non-emergency cases such as upper respiratory tract infections (URTIs). Flooding of these cases may contribute to inappropriate antibiotic prescribing. The aim of this study was to determine the patient factors associated with inappropriate antibiotic prescribing for URTIs in the EDs.

    Methods: This cross-sectional study involved patients over age 3 years old who presented with URTI to the green zone of the ED of a tertiary hospital on the east coast of Malaysia in 2018-2019. Convenient sampling was done. The patients were categorised into two groups according to their McIsaac scores: positive (≥ 2) or negative (< 2). Antibiotics given to the negative McIsaac group were considered inappropriate.

    Results: A total of 261 cases were included - 127 with positive and 134 with negative McIsaac scores. The most common symptoms were fever and cough. About 29% had inappropriate antibiotic prescribing with a high rate for amoxycillin. Duration of symptoms of one day or less (OR 18.5; 95% CI: 1.65, 207.10; P = 0.018), presence of chills (OR 4.36; 95% CI: 1.13, 16.88; P = 0.033) and diagnosis of acute tonsillitis (OR 5.26; 95% CI: 1.76, 15.72; P = 0.003) were significantly associated with inappropriate antibiotic prescription.

    Conclusion: Factors influencing inappropriate antibiotic prescribing should be pointed out to emergency doctors to reduce its incidence.

    Matched MeSH terms: Anti-Bacterial Agents
  7. Ahmad Hatib NA, Chong CY, Thoon KC, Tee NW, Krishnamoorthy SS, Tan NW
    Ann Acad Med Singap, 2016 Jul;45(7):297-302.
    PMID: 27523510
    INTRODUCTION: Enteric fever is a multisystemic infection which largely affects children. This study aimed to analyse the epidemiology, clinical presentation, treatment and outcome of paediatric enteric fever in Singapore.

    MATERIALS AND METHODS: A retrospective review of children diagnosed with enteric fever in a tertiary paediatric hospital in Singapore was conducted from January 2006 to January 2012. Patients with positive blood cultures for Salmonella typhi or paratyphi were identified from the microbiology laboratory information system. Data was extracted from their case records.

    RESULTS: Of 50 enteric fever cases, 86% were due to Salmonella typhi, with 16.3% being multidrug resistant (MDR) strains. Sixty-two percent of S. typhi isolates were of decreased ciprofloxacin susceptibility (DCS). Five cases were both MDR and DCS. The remaining 14% were Salmonella paratyphi A. There were only 3 indigenous cases. Ninety-four percent had travelled to typhoid-endemic countries, 70.2% to the Indian subcontinent and the rest to Indonesia and Malaysia. All patients infected with MDR strains had travelled to the Indian subcontinent. Anaemia was a significant finding in children with typhoid, as compared to paratyphoid fever (P = 0.04). Although all children were previously well, 14% suffered severe complications including shock, pericardial effusion and enterocolitis. None had typhoid vaccination prior to their travel to developing countries.

    CONCLUSION: Enteric fever is largely an imported disease in Singapore and has contributed to significant morbidity in children. The use of typhoid vaccine, as well as education on food and water hygiene to children travelling to developing countries, needs to be emphasised.

    Matched MeSH terms: Anti-Bacterial Agents/therapeutic use
  8. Ahmad Kamil MA, Mohd Affandi A
    Dermatol Res Pract, 2018;2018:2017959.
    PMID: 29951091 DOI: 10.1155/2018/2017959
    Introduction: Hidradenitis Suppurativa (HS) is a chronic inflammatory skin condition characterized by inflamed nodules, abscesses, sinus tracts, and scarring, which can occur in any skin containing folliculopilosebaceous units. We aim to identify the demographic and clinical characteristics and treatment modalities in patients with HS.

    Methods: A retrospective analysis involving records of patients diagnosed with HS in Hospital Kuala Lumpur from July 2009 to June 2016.

    Results: Sixty-two patients were identified, with equal cases involving males and females. Majority of patients were Malays (41.9%), followed by Indians (35.5%), Chinese (17.7%), and other ethnicities (4.8%). Median age at diagnosis was 25 (IQR: 14) years. There is a delay in diagnosis with a median of 24 (IQR: 52) months. Most of the patients had lesions on the axilla (85.5%), followed by groin (33.9%) and gluteal region (29%). Gluteal lesions were more common in males. Nodules (67.7%), sinuses (56.5%), and abscesses (33.9%) were the main clinical features, with 43.5% classified under Hurley stage 2. There was no difference in terms of symptoms and types of lesions among different ethnicities and genders. Majority received systemic antibiotics, more than half had retinoid, and third of the patients had surgical intervention.

    Conclusions: A prompt recognition of HS is imperative, to screen for comorbidities and to initiate early treatment to reduce physical and psychological complications.

    Matched MeSH terms: Anti-Bacterial Agents
  9. Ahmad M, Zin CS, Ab Rahman AF
    J Pharm Bioallied Sci, 2020 Nov;12(Suppl 2):S737-S742.
    PMID: 33828370 DOI: 10.4103/jpbs.JPBS_298_19
    Introduction: Patients receiving continuous ambulatory peritoneal dialysis (CAPD) are commonly associated with peritonitis. However, little is known about the utilization of antibiotics for the treatment of peritonitis in these patients.

    Objectives: This study aimed to evaluate the patterns of intraperitoneal (IP) antibiotic utilization for the treatment of peritonitis in CAPD patients.

    Materials and Methods: This is a retrospective study conducted at a tertiary hospital setting in Malaysia. Medical records of CAPD patients who were diagnosed with peritonitis and registered with National Kidney Registry from 2013 to 2018 were reviewed. Types of antibiotics used and its dose and duration were recorded and reported using the anatomical therapeutic chemical/defined daily dose (ATC/DDD) system.

    Results: A total of 105 peritonitis episodes were recorded from 72 patients. The most common first-line empirical antibiotic combinations used were ceftazidime/cefazolin (40%, n = 42), followed by cefepime/cefazolin (30.5%, n = 32) and ceftazidime/cloxacillin (25.7%, n = 27). The definitive therapy for culture-proven CAPD-related peritonitis (CAPD-P) showed that vancomycin was the most frequently prescribed antibiotic (31.7%, n = 26/82), followed by amikacin (14.6%, n = 12/82), meropenem (11%, n = 9/82) and ampicillin (11%, n = 9/82). Ciprofloxacin was among the least prescribed definitive antibiotics for CAPD-P (2.4%, n = 2/82) but the DDD/100 patient-days estimates showed that it had the highest therapeutic intensity.

    Conclusion: There are various IP antibiotics used for CAPD-P and the most common empirical therapy was the combination of ceftazidime and cefazolin while vancomycin is predominantly used for definitive therapy. Future studies to evaluate the clinical outcomes of the antibiotic use should be conducted to have a better insight on the efficacy of the peritonitis treatment.

    Matched MeSH terms: Anti-Bacterial Agents
  10. Ahmad MN, Karim NU, Normaya E, Mat Piah B, Iqbal A, Ku Bulat KH
    Sci Rep, 2020 06 12;10(1):9566.
    PMID: 32533034 DOI: 10.1038/s41598-020-66488-7
    Lipid oxidation and microbial contamination are the major factors contributing to food deterioration. Food additives like antioxidants and antibacterials can prevent food spoilage by delaying oxidation and preventing the growth of bacteria. Artocarpus altilis leaves exhibited biological properties that suggested its use as a new source of natural antioxidant and antimicrobial. Supercritical fluid extraction (SFE) was used to optimize the extraction of bioactive compounds from the leaves using response surface methodology (yield and antioxidant activity). The optimum SFE conditions were 50.5 °C temperature, 3784 psi pressure and 52 min extraction time. Verification test results (Tukey's test) showed that no significant difference between the expected and experimental DPPH activity and yield value (99%) were found. Gas-chromatography -mass spectrometry (GC-MS) analysis revealed three major bioactive compounds existed in A. altilis extract. The extract demonstrated antioxidant and antibacterial properties with 2,3-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity, ferric reducing ability of plasma (FRAP), hydroxyl radical scavenging activity, tyrosinase mushrrom inhibition of 41.5%, 8.15 ± 1.31 (µg of ascorbic acid equivalents), 32%, 37% and inhibition zone diameter of 0.766 ± 0.06 cm (B. cereus) and 1.27 ± 0.12 cm (E. coli). Conductor like screening model for real solvents (COSMO RS) was performed to explain the extraction mechanism of the major bioactive compounds during SFE. Molecular electrostatic potential (MEP) shows the probability site of nucleophilic and electrophilic attack during bacterial inhibition. Based on molecular docking study, non-covalent interactions are the main interaction occurring between the major bioactive compounds and bacteria (antibacterial inhibition).
    Matched MeSH terms: Anti-Bacterial Agents/isolation & purification; Anti-Bacterial Agents/pharmacology*
  11. Ahmad N, Zakaria WR, Mohamed R
    Helicobacter, 2011 Feb;16(1):47-51.
    PMID: 21241412 DOI: 10.1111/j.1523-5378.2010.00816.x
    The prevalence of antibiotic resistance varies in geographic areas. The information on the antibiotic susceptibility patterns of Helicobacter pylori (H. pylori) in our local setting is therefore relevant as a guide for the treatment options.
    Matched MeSH terms: Anti-Bacterial Agents/pharmacology*
  12. Ahmad N, Hashim R, Shukor S, Mohd Khalid KN, Shamsudin F, Hussin H
    J Med Microbiol, 2013 May;62(Pt 5):804-806.
    PMID: 23449878 DOI: 10.1099/jmm.0.050781-0
    Matched MeSH terms: Anti-Bacterial Agents/pharmacology*; Anti-Bacterial Agents/therapeutic use
  13. Ahmad N, Nawi S, Rajasekaran G, Maning N, Aziz MN, Husin A, et al.
    J Med Microbiol, 2010 Dec;59(Pt 12):1530-1532.
    PMID: 20724515 DOI: 10.1099/jmm.0.022079-0
    Matched MeSH terms: Anti-Bacterial Agents/pharmacology*
  14. Ahmad NJ, Althemery AU, Haseeb A, Yusuf RF, Hassali AA, Khan AH
    J Pharm Bioallied Sci, 2020 01 29;12(1):11-15.
    PMID: 32801595 DOI: 10.4103/jpbs.JPBS_186_19
    Introduction: The implementation of antibiotic stewardship programs (ASPs) can improve the treatment of infections and can decrease the adverse events that result from antibiotics use. In the last decades, there is an increasing interest of the researchers in the implementation of ASPs.

    Materials and Methods: The articles published in different journals were retrieved by searching many research databases such as Cochrane library, Europe PMC, PubMed, and Web of Science; we searched these databases for all published articles till November 2018.

    Results and Discussion: The searching results using Cochrane library showed an increase in the number of randomized clinical trials that related to the keyword of "antimicrobial stewardship" specially in the last 5 years. Using Europe PMC, we found 6178 results. From these results, there are 3874 free full texts. In addition, there are 2132 original articles in PubMed and by searching Web of Science database till November 8 there are 3085 results. These results show that the number of trusted published articles was increased continuously; this shows the increasing interest of the researchers in ASPs. These researches will help health-care providers to use antibiotics appropriately and to overcome the barriers of implementing ASPs.

    Conclusion: The results of this study show that the researchers had high levels of interest in participating in research activities related to the appropriate use on antibiotics and the implementation of antimicrobial stewardship programs.

    Matched MeSH terms: Anti-Bacterial Agents
  15. Ahmad S, Sukari MA, Ismail N, Ismail IS, Abdul AB, Abu Bakar MF, et al.
    PMID: 25887035 DOI: 10.1186/s12906-015-0594-7
    Mangifera pajang Kosterm is a plant species from the mango family (Anacardiaceae). The fruits are edible and have been reported to have high antioxidant content. However, the detailed phytochemical studies of the plant have not been reported previously. This study investigates the phytochemicals and biological activities of different parts of Mangifera pajang.
    Matched MeSH terms: Anti-Bacterial Agents/pharmacology*; Anti-Bacterial Agents/therapeutic use
  16. Ahmad SJ, Abdul Rahim MBH, Baharum SN, Baba MS, Zin NM
    J Trop Med, 2017;2017:2189814.
    PMID: 29123551 DOI: 10.1155/2017/2189814
    Natural products continue to play an important role as a source of biologically active substances for the development of new drug. Streptomyces, Gram-positive bacteria which are widely distributed in nature, are one of the most popular sources of natural antibiotics. Recently, by using a bioassay-guided fractionation, an antimalarial compound, Gancidin-W, has been discovered from these bacteria. However, this classical method in identifying potentially novel bioactive compounds from the natural products requires considerable effort and is a time-consuming process. Metabolomics is an emerging "omics" technology in systems biology study which integrated in process of discovering drug from natural products. Metabolomics approach in finding novel therapeutics agent for malaria offers dereplication step in screening phase to shorten the process. The highly sensitive instruments, such as Liquid Chromatography-Mass Spectrophotometry (LC-MS), Gas Chromatography-Mass Spectrophotometry (GC-MS), and Nuclear Magnetic Resonance ((1)H-NMR) spectroscopy, provide a wide range of information in the identification of potentially bioactive compounds. The current paper reviews concepts of metabolomics and its application in drug discovery of malaria treatment as well as assessing the antimalarial activity from natural products. Metabolomics approach in malaria drug discovery is still new and needs to be initiated, especially for drug research in Malaysia.
    Matched MeSH terms: Anti-Bacterial Agents
  17. Ahmad Sabri NS, Mohd Zulkeflle SN, Yusof N, Md Akhir FN, Othman N, Zakaria Z, et al.
    Microbiol Resour Announc, 2021 May 06;10(18).
    PMID: 33958405 DOI: 10.1128/MRA.00332-21
    Staphylococcus spp. are Gram-positive bacteria that reside within the normal microbiota of humans and animals but pose a health threat as reservoirs of antimicrobial resistance genes. Here, we present the draft genome sequences of three Staphylococcus sp. strains isolated from hospital wastewater in Malaysia that demonstrated resistance to multiple antibiotics.
    Matched MeSH terms: Anti-Bacterial Agents
  18. Ahmad Zorin Sahalan, Nazahiyah Sulaiman, Nihayah Mohammed, Kaswandi Md. Ambia, Hing, Hian Lian
    MyJurnal
    Two species of plants, Andrographis paniculata and Euphorbia hirta were screened for antibacterial activities against three Gram positives and Gram negatives. The leaves from both plants were extracted by methanol extraction. The antibacterial activity was detected with spread plate well diffusion method. The extracts of both plants demonstrated inhibitory activity against both Gram negative and positives bacteria. Staphylococcus aureus, Bacillus subtilis, Streptococcus epidemidis, Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa. The minimum inhibitory concentration (MIC determination using micro dilution method showed that the A/tic of A. paniculata for the tested bacteria were 1.56 mg/ml (Staph. aureus), 3.13 mg/ml (Bacillus subtilis), 3.13 mg/ml (Strept. epidemidis), 1.56 mg/ml (Escherichia cob), 12.50 mg/ml (Klebsiella pneumoniae) and 3.13 mg/ml (Pseudomonas aeruginosa) respectively. The MIC value for E. hirta was 6.25 mg/ml (Staph. aureus) and 3.13 mg/ml (Bacillus subtilis), 3.13 mg/ml (Strept. Epidemidis), 3.13 mg/ml (Pseudomonas aeruginosa),12.5 mg/ml (Escherichia coli), and 6.25 mg/ml (Klebsiella pneumoniae). Both plants represent a potential for pharmaceutical and agricultural applications and are worthy of further study.
    Matched MeSH terms: Anti-Bacterial Agents
  19. Ahmad Zorin Sahalan, Baharudin Omar, Aima Yusirah Mohamed, Jeffery, John
    MyJurnal
    Natural peptides in insect vectors played an important role in the control of
    pathogens. Musca domestica Linnaeus and Chrysomya megacephala Fabricius were
    two species of local fly chosen to detect presence of antimicrobial peptide substance.
    The screening of the antimicrobial activity was carried using a spectrophotometric
    method. Results were obtained much quicker and less laborious. The results showed
    larva hemolymph of M. domestica lysed Bacillus subtilis and two Gram negatives,
    Escherichia coli and Pseudomona. aeruginosa. The pupae hemolymph only lysed E.
    coli. Whereas, the hemolymph of C. megacephala larva showed bactericidal effect
    against both of the Gram positives tested, i.e. B. subtilis and Staph. aureus. and no
    effect was against the Gram negatives. The pupa showed lytic activity against Staph.
    aureus and P. aeruginosa. As a conclusion, the larva and pupa hemolymph of M.
    domestica and C. megacephala demonstrated antibacterial activity. However, larva
    hemolymph of M. domestica and C. megacephala has broader antibacterial activity
    against both Gram positive and negative bacteria.
    Matched MeSH terms: Anti-Bacterial Agents
  20. Ahmad Zorin Sahalan, Engku Sharmila, Nazahiyah Sulaiman
    Jurnal Sains Kesihatan Malaysia, 2018;16(101):83-87.
    MyJurnal
    Recently, epidermal mucus of fish has been identified as a rich biological source of various bioactive substances, particularly antibacterial peptides. This study was conducted to identify the potential of epidermal mucosa of Clarias batrachus as a source of antibacterial material. Mucosal samples were collected from C. batrachus epidermis and extracted using an aqueous extraction method. Antibacterial activity of the crude epidermal mucus extract was determined by using spectrophotometric method. As a result there was antibacterial activity by the mucus extract against Escherichia coli (ATCC 25922) and Pseudomonas aeruginosa (ATCC 27853). The results of this study supports the role of mucus as a part of body immune system with antibacterial peptide as a component of innate body immune system. Hence, these findings can be used as one of the first steps towards the development of new class antibiotics.
    Matched MeSH terms: Anti-Bacterial Agents
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links