Displaying publications 121 - 140 of 244 in total

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  1. Lee YH, Hussain ZA, Choong FP
    PMID: 2125616
    The in-vitro activity of cefotaxime and cefoperazone were compared using clinically isolated Escherichia coli, Klebsiella spp and Pseudomonas aeruginosa. Cefotaxime was found on a weight to weight basis, to be much more active than cefoperazone. All the three species studied show the presence of cefoperazone-resistant population which were sensitive to cefotaxime. The possible mechanisms of resistance to these antibiotics were discussed.
    Matched MeSH terms: Drug Resistance, Microbial
  2. Jamshed SQ, Elkalmi R, Rajiah K, Al-Shami AK, Shamsudin SH, Siddiqui MJ, et al.
    J Infect Dev Ctries, 2014;8(6):780-5.
    PMID: 24916878 DOI: 10.3855/jidc.3833
    This study is aimed to investigate the understanding of antibiotic use and antibiotic resistance and its correlate factors among final-year medical and pharmacy students at International Islamic University Malaysia (IIUM).
    Matched MeSH terms: Drug Resistance, Microbial*
  3. Radu S, Ling OW, Rusul G, Karim MI, Nishibuchi M
    J Microbiol Methods, 2001 Aug;46(2):131-9.
    PMID: 11412923
    Twenty-five and three strains of Escherichia coli O157:H7 were identified from 25 tenderloin beef and three chicken meat burger samples, respectively. The bacteria were recovered using the immunomagnetic separation procedure followed by selective plating on sorbitol MacConkey agar and were identified as E. coli serotype O157:H7 with three primer pairs that amplified fragments of the SLT-I, SLT-II and H7 genes in PCR assays. Susceptibility testing to 14 antibiotics showed that all were resistant to two or more antibiotics tested. Although all 28 strains contained plasmid, there was very little variation in the plasmid sizes observed. The most common plasmid of 60 MDa was detected in all strains. We used DNA fingerprinting by randomly amplified polymorphic DNA (RAPD) and pulsed-field gel electrophoresis (PFGE) to compare the 28 E. coli O157:H7 strains. At a similarity level of 90%, the results of PFGE after restriction with XbaI separated the E. coli O157:H7 strains into 28 single isolates, whereas RAPD using a single 10-mer oligonucleotides separated the E. coli O157:H7 strains into two clusters and 22 single isolates. These typing methods should aid in the epidemiological clarification of the E. coli O157:H7 in the study area.
    Matched MeSH terms: Drug Resistance, Microbial
  4. Lee WS, Puthucheary SD, Boey CC
    J Paediatr Child Health, 1998 Aug;34(4):387-90.
    PMID: 9727185
    OBJECTIVE: To study the clinical features of non-typhoid Salmonella gastroenteritis and the incidence, risk factors and outcome of invasive complications in urban Malaysian children. To describe the serotypes of Salmonella species isolated and the pattern of antibiotic susceptibility.

    METHODOLOGY: Retrospective review of a group of 131 children with non-typhoid Salmonella gastroenteritis seen at the University Hospital, Kuala Lumpur, Malaysia from January 1994 to December 1996.

    RESULTS: Sixty-seven percent were infants below one year of age. Fever and vomiting were seen in nearly half of children. Seven children (5.3%) had invasive complications: 5 bacteraemia and 2 meningitis. Age below 6 months, fever > 38.0 degrees C, and dehydration on admission were significantly associated with invasive complications. The commonest serotypes isolated were S. enteritidis, S. paratyphi B, and S. bovis-morbificans. A total of 94-100% of isolates were susceptible to commonly prescribed antibiotics.

    CONCLUSIONS: Children with Salmonella gastroenteritis below 6 months of age who are febrile and dehydrated should be treated empirically with antibiotics until the result of blood culture is available.

    Matched MeSH terms: Drug Resistance, Microbial
  5. Yang SK, Yusoff K, Ajat M, Yap WS, Lim SE, Lai KS
    J Pharm Anal, 2021 Apr;11(2):210-219.
    PMID: 34012697 DOI: 10.1016/j.jpha.2020.05.014
    Mining of plant-derived antimicrobials is the major focus at current to counter antibiotic resistance. This study was conducted to characterize the antimicrobial activity and mode of action of linalyl anthranilate (LNA) against carbapenemase-producing Klebsiella pneumoniae (KPC-KP). LNA alone exhibited bactericidal activity at 2.5% (V/V), and in combination with meropenem (MPM) at 1.25% (V/V). Comparative proteomic analysis showed a significant reduction in the number of cytoplasmic and membrane proteins, indicating membrane damage in LNA-treated KPC-KP cells. Up-regulation of oxidative stress regulator proteins and down-regulation of oxidative stress-sensitive proteins indicated oxidative stress. Zeta potential measurement and outer membrane permeability assay revealed that LNA increases both bacterial surface charge and membrane permeability. Ethidium bromide influx/efflux assay showed increased uptake of ethidium bromide in LNA-treated cells, inferring membrane damage. Furthermore, intracellular leakage of nucleic acid and proteins was detected upon LNA treatment. Scanning and transmission electron microscopies again revealed the breakage of bacterial membrane and loss of intracellular materials. LNA was found to induce oxidative stress by generating reactive oxygen species (ROS) that initiate lipid peroxidation and damage the bacterial membrane. In conclusion, LNA generates ROS, initiates lipid peroxidation, and damages the bacterial membrane, resulting in intracellular leakage and eventually killing the KPC-KP cells.
    Matched MeSH terms: Drug Resistance, Microbial
  6. Ibrahim NH, Maruan K, Mohd Khairy HA, Hong YH, Dali AF, Neoh CF
    J Pharm Pharm Sci, 2017;20(1):397-406.
    PMID: 29145934 DOI: 10.18433/J3NW7G
    PURPOSE: To systematically review studies on cost-effectiveness of implementing Antimicrobial stewardship programmes (ASP) in the hospital setting.

    METHODS: A systematic literature search was performed using electronic databases, such as EMBASE, PubMed/Medline, CINAHL, NHS and CEA Registry from 2000 until 2017. The quality of each included study was assessed using Joanna Briggs Institute Critical Appraisal Checklist for Economic Evaluations and Consolidated Health Economic Evaluation Reporting Standards Statement checklist.

    RESULTS: Of the 313 papers retrieved, five papers were included in this review after assessment for eligibility. The majority of the studies were cost-effectiveness studies, comparing ASP to standard care. Four included economic studies were conducted from the provider (hospital) perspective while the other study was from payer (National Health System) perspective. The cost included for economic analysis were as following: personnel costs, warded cost, medical costs, procedure costs and other costs.

    CONCLUSIONS: All studies were generally well-conducted with relatively good quality of reporting. Implementing ASP in the hospital setting may be cost-effective. However, comprehensive cost-effectiveness data for ASP remain relatively scant, underlining the need for more prospective clinical and epidemiological studies to incorporate robust economic analyses into clinical decisions. This article is open to POST-PUBLICATION REVIEW. Registered readers (see "For Readers") may comment by clicking on ABSTRACT on the issue's contents page.

    Matched MeSH terms: Drug Resistance, Microbial*
  7. Heymann DL
    J Public Health Policy, 2005 Apr;26(1):133-9.
    PMID: 15906882
    The microbes that cause infectious diseases are complex, dynamic, and constantly evolving. They reproduce rapidly, mutate frequently, breach species barriers, adapt with relative ease to new hosts and new environments, and develop resistance to the drugs used to treat them. In their article "Meeting the challenge of epidemic infectious diseases outbreaks: an agenda for research", Kai-Lit Phua and Lai Kah Lee clearly demonstrate how social, behavioural and environmental factors, linked to a host of human activities, have accelerated and amplified these natural phenomena. By reviewing published and non-published information about outbreaks of Nipah virus in Malaysia, severe acute respiratory syndrome (SARS) and avian influenza in Asia, and the HIV pandemic, they provide a series of examples that demonstrate the various social, behavioural and environmental factors of these recent infectious disease outbreaks. They then analyse some of these same determinants in important historical epidemics and pandemics such as plague in medieval Europe, and conclude that it is important to better understand the social conditions that facilitate the appearance of diseases outbreaks in order to determine why and how societies react to outbreaks and their impact on different population groups.
    Matched MeSH terms: Drug Resistance, Microbial
  8. Cheong YM, Jegathesan M, Henrichsen J, Wong YH, Ng AJ, Louis A
    J Trop Pediatr, 1988 08;34(4):182-5.
    PMID: 3172328 DOI: 10.1093/tropej/34.4.182
    Matched MeSH terms: Drug Resistance, Microbial
  9. Pearson JM, Rees RJ, Waters MF
    Lancet, 1975 Jul 12;2(7924):69-72.
    PMID: 49662
    An account is given of the first hundred consecutive proven cases of sulphone resistance in leprosy, detected in Malaysia between 1963 and 1974. Proof of resistance was clinical in eighty patients and was obtained by drug-sensitivity testing in mice in ninety-six patients; 76 cases were proved both clinically and experimentally, and there was no discrepancy between the two methods. Sulphone resistance was confined to patients with lepromatous-type leprosy--i.e., patients with a large bacterial population. Clinical evidence of relapse due to drug resistance appeared 5-24 years after the start of sulphone treatment. Low dosage favoured the appearance of resistance; therefore regular treatment of lepromatous leprosy with dapsone in full dosage is recommended. The attainment of "skin smears negative for leprosy bacilli" is no test of cure of lepromatous leprosy.
    Matched MeSH terms: Drug Resistance, Microbial*
  10. Mahoney LE
    Lancet, 1968 Nov 23;2(7578):1139.
    PMID: 4177183
    Matched MeSH terms: Drug Resistance, Microbial
  11. Yazid AM, Ali AM, Shuhaimi M, Kalaivaani V, Rokiah MY, Reezal A
    Lett Appl Microbiol, 2000 Jul;31(1):57-62.
    PMID: 10886616
    Eighteen Bifidobacterium strains were tested for their susceptibility to a range of antimicrobial agents. All the strains tested, including the reference culture Lactobacillus acidophilus CH2, were susceptible to several groups of antimicrobial agents, they were cephalosporin (cefamandole, cefazolin, cefaperazone, cefoxitin), polypeptide (bacitracin), macrolide (erythromycin), penicillin (amoxicillin), phenicol (chloramphenicol) and beta-lactam (imipenem). Fourteen strains were resistant to more than 10 antibiotics. The reference culture was resistant to only three antibiotics. The results showed that bifidobacteria are resistant to a wide range of antimicrobial agents.
    Matched MeSH terms: Drug Resistance, Microbial*
  12. Son R, Nimita F, Rusul G, Nasreldin E, Samuel L, Nishibuchi M
    Lett Appl Microbiol, 1999 Aug;29(2):118-22.
    PMID: 10499300
    Nineteen strains of vancomycin-resistant Enterococcus faecium isolated from 10 of 75 (13.3%) tenderloin beef samples were examined for resistance to selected antibiotics, presence of plasmids, and genetic diversity by random amplification of polymorphic DNA analysis. All strains showed multiple resistant to the antibiotics tested. Multiple antibiotic indexing of the vancomycin-resistant E. faecium strains showed that all (100%) originated from high risk contamination environments where antibiotics were often used. Plasmids ranging in size from 1.5 to 36 megadalton were detected in 15 of 19 (79%) strains. Thus, three plasmid profiles and eight antibiotypes were observed among the E. faecium strains. A high degree of polymorphism was obtained by combining the results of the two primers used; with the 19 E. faecium strains being differentiated into 19 RAPD-types. These preliminary results suggest that RAPD-PCR has application for epidemiologic studies and that resistance patterns and plasmid profiling could be used as an adjunct to RAPD for the typing of E. faecium in the study area.
    Matched MeSH terms: Drug Resistance, Microbial
  13. Son R, Rusul G, Sahilah AM, Zainuri A, Raha AR, Salmah I
    Lett Appl Microbiol, 1997 Jun;24(6):479-82.
    PMID: 9203404
    Strains of Aeromonas hydrophila isolates from skin lesions of the common freshwater fish, Telapia mossambica, were screened for the presence of plasmid DNA by agarose gel electrophoresis and tested for susceptibility to 10 antimicrobial agents. Of the 21 fish isolates examined, all were resistant to ampicillin and sensitive to gentamycin. Most isolates were resistant to streptomycin (57%), tetracycline (48%) and erythromycin (43%). While seven of 21 isolates harboured plasmids, with sizes ranging from 3 to 63.4 kilobase pair (kb), it was only possible to associate the presence of a plasmid with antibiotic resistance (ampicillin and tetracycline) in strain AH11. Both the plasmid and the associated antimicrobial resistance could be transferred to an Escherichia coli recipient by single-step conjugation at a frequency of 4.3 x 10(-3) transconjugants per donor cell.
    Matched MeSH terms: Drug Resistance, Microbial/genetics
  14. Huda Kh. AbdulKader, Salmiah Mohd Ali, Mohamed Ibrahim Abu Hassan, Mohamed Mansor Manan
    Malaysian Dental Journal, 2010;31(1):35-43.
    MyJurnal
    There is a major concern about the increased use of antibiotics in dental practice and the emergence of resistant bacterial strains. In recent years, dentists have reported a shift from narrow-spectrum to broad-spectrum antibiotic prescriptions due to increasing antibiotic resistance. The aims of this study are to investigate the prescribing patterns of the therapeutic and prophylactic use for antibiotics in various dental situations by dental practitioners. The study also specifically investigates the prescribing habits of dental practitioners regarding certain cardiac conditions and related dental procedures in patients predisposed to infective endocarditis. This study utilized a questionnaire which was designed to investigate the antibiotic prescribing patterns by dental practitioners in the Klang Valley region. The returned questionnaires were analyzed using SPSS, to identify compliance to antibiotic guidelines by Malaysia National Clinical Guidelines (MNCG) (2003) and American Heart Association Guidelines (AHAG) (2008). 217 dentists responded to the questionnaire and the responses show that there is a wide variety of antibiotic prescriptions among dentists and there is also misuse of antibiotics in some clinical dental conditions. The results also show that there is a large variation in the antibiotic prescriptions patterns for prophylaxis against infective endocarditis. Furthermore, there is uncertainty as to which cardiac conditions required prophylaxis and for which particular dental procedures. This study concludes that there is a clear need for the development of prescribing guidelines, regular monitoring of antibiotic prescriptions by dental practitioners and educational initiatives to encourage the rational and appropriate use of the antibiotics.
    Matched MeSH terms: Drug Resistance, Microbial
  15. Greta Miranda Goh, Awg Khairul Bin Awang Mohammad
    MyJurnal
    Introduction: Increase in antibiotic resistance (ABR) worldwide, specifically in developing countries, requires the need to pay attention to self-medicated antibiotics, perception and attitude of ABR. Self-medication on antibiotics practices have a major pitfall, which is that users do not follow a prescribed course of drug and may usually stop the drug regimen once they feeling better. The spread of ABR is known to be associated with inadequate dosing, and incomplete courses which increases the actual cost of treating illnesses and social burden. This research is motivated by the alarming spread of ABR in Malaysia, the paucity of data on self-medication with antibiotics, and the alarming rate of pharmacy or drug stores that sell antibiotics and prescription-only medicines that are unauthorized to do so. Thus, the study has been done to observe the pattern of antibiotics usage of undergraduate students in a public uni- versity. Methods: Quantitative study with cross-sectional study have been chosen in this study and the target sample is localUniversiti Malaysia Sarawak(UNIMAS) undergraduate students with use of convenience sampling method. Besides, data collection has been done at main library (Centre for Academic Information Services)of UNIMASand students pavilion, UNIMAS by using the fully English online and hardcopy self-administered questionnaire adapted from previous study. Then, the data collected has been analysed by using SPSS Version 22. Results: In this study, 30.5% out of 403respondents have admitted that have taken antibiotics within 6 months and common reason of taking antibiotics given are fever, respiratory tract infection, and pain. Besides, there are 36% of respondents are not compliance to their antibiotics once prescribed with reason of already felt better and healed from the illness. More than 50% of the respondents are believed that antibiotics can treat the viral infection and work on the cold or coughs. For the attitude’s aspect, more than 60% of the respondents are expecting the doctor to prescribed them antibiotics when they are having cold symptoms and 49.9% will take antibiotics when they get cold to help them recover more quickly. Conclusion: This study has showed that there about a quarter of respondents (36%) still using antibiotics in improper method of consumption. Besides, some of the respondents have misunderstanding perception toward anti- biotics and bad attitudes on compliance toward the antibiotics. Thus, this problem from the young adult population could contributes to the increasing trend of antibiotics resistance in Malaysia.
    Matched MeSH terms: Drug Resistance, Microbial
  16. Teng CL
    Malays Fam Physician, 2014;9(2):18-25.
    PMID: 25893067 MyJurnal
    This review highlights the high prevalence of antibiotic use for upper respiratory tract infections (URTIs) in a larger part of the Asia-Pacific region. Since URTIs are one of the common reasons for primary care consultations in this region, inappropriate use of antibiotic in both quantity and drug choice has greatly influenced the development of antibiotic resistance. Notwithstanding the paucity of Asia-Pacific data on the above issues, the available information suggests urgent actions needed to be taken to promote judicious antibiotic use at the point-of-care through a multi- pronged approach targeting the patients/consumers (or parents), healthcare providers and health care systems.
    Matched MeSH terms: Drug Resistance, Microbial
  17. Ng C, Chen H, Goh SG, Haller L, Wu Z, Charles FR, et al.
    Mar Pollut Bull, 2018 Oct;135:475-480.
    PMID: 30301062 DOI: 10.1016/j.marpolbul.2018.07.055
    Poor microbial water quality jeopardizes the health and safety of food produced by aquaculture farms. Three fish farms and transect sites in Singapore were assessed for microbial water quality and antimicrobial resistance determinants. Of the 33 multidrug resistant E. coli isolated from surface waters of the Johor Straits, 81.8% were ESBL producers. The relative abundance of sul1, qnrA and intI1 genes were higher in sediments than surface waters. Among the surface water samples, higher concentrations (10-1-101) of beta-lactamases (blaSHV, blaOXA, blaCTX-M) were detected in the transect sites. This study highlights a potential antimicrobial resistance transmission chain from environmental waters, to animal carriers and humans.
    Matched MeSH terms: Drug Resistance, Microbial/genetics*
  18. Ariza Adnan
    Medical Health Reviews, 2008;2008(1):29-44.
    MyJurnal
    The issue of antibiotic resistance has been around ever since the first antibiotic penicillin was introduced to the world. It continues to rise, becoming a major problem across the globe and Malaysia is no exception. Hospital is a critical component of the antibiotic resistance problem worldwide. The problems of antibiotic resistance are typically magnified in a hospital setting due to the common variables in the hospital environment that favour its development. These include a combination of highly susceptible patients, intensive and prolonged antibiotic use, and crossinfection resulting in nosocomial infections with highly resistant bacterial pathogens such as multi-resistant gram-negative rods, vancomycin resistant enterococci (VRE) and methicillinresistant Staphylococcus aureus (MRSA) as well as resistant fungal infections. Transmission of highly resistant bacteria from patient to patient within the hospital environment amplifies the problem of antibiotic resistance and may result in the infection of patients who are not receiving antibiotics. Transmission of antibiotic-resistant strains from hospital personnel to patients or vice versa may also occur. What are the available strategies and what works best in managing antibiotic resistance in the hospital? This review will highlight the seriousness of the resistance problem and identify actions that address it especially in the context of improving the problem in Malaysian hospitals.
    Matched MeSH terms: Drug Resistance, Microbial
  19. Palillo ES, Salleh MA
    Microbiol. Immunol., 1992;36(11):1195-200.
    PMID: 1491621
    Four hundred and ninety-eight predominantly pyocin-type 10 clinical strains of Pseudomonas aeruginosa were analyzed for resistance to carbenicillin, cefoperazone, cefotaxime, ceftazidime, gentamicin, amikacin and netilmicin. Based on NCCLS-recommended MIC breakpoints, 245 strains were found to be resistant, of which 41.6% were resistant to carbenicillin, 38% to gentamicin, 37.8% to netilmicin, 26.3% to cefoperazone, 17.9% to cefotaxime, 0.6% to amikacin and none to ceftazidime. Quadruple resistance to carbenicillin, cefoperazone, gentamicin and netilmicin was the most frequent pattern observed. Resistance to older antibiotics (kanamycin, streptomycin and tetracycline) and to mercuric chloride were also common. Conjugation experiments suggested that self-transmissible and non-transmissible plasmids occurred in at least 66 strains.
    Matched MeSH terms: Drug Resistance, Microbial/genetics*
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