MyMedR

Displaying publications 1041 - 1060 of 2185 in total

Abstract:

Sort:

Vancomycin administration in continuous ambulatory peritoneal dialysis: the risk of ototoxicity

Gendeh BS, Gibb AG, Aziz NS, Kong N, Zahir ZM

Otolaryngol Head Neck Surg, 1998 Apr;118(4):551-8.
PMID: 9560111

A prospective study was undertaken in 16 patients with chronic renal failure on continuous ambulatory peritoneal dialysis, with 22 episodes of peritonitis treated with vancomycin, a known ototoxic agent. Twelve patients had one episode each, and four had recurrent peritonitis. Each treatment course consisted of two infusions of vancomycin (30 mg/kg body weight) in 2 L of peritoneal dialysate administered at 6-day intervals. Serum vancomycin analyzed by enzyme immunoassay showed a mean trough level of 11.00 microg/ml on day 6 and mean serum levels of 33.8 and 38.6 microg/ml about 12 hours after administration on days 1 and 7, respectively. Similar levels, well within the therapeutic range, were encountered with repeated vancomycin therapy for recurrent episodes of peritonitis, suggesting that no changes occurred in the pharmacokinetic profile of the drug. Pure-tone audiometry, electronystagmography, and clinical assessment performed during each course of treatment showed no evidence of ototoxicity even on repeated courses of vancomycin therapy. The results suggest that vancomycin therapy when given in appropriate concentrations as a single therapeutic agent is both effective and safe. We believe, however, that vancomycin administered in combination with an aminoglycoside may produce ototoxic effects that may be greatly aggravated, possibly because of synergism.

Matched MeSH terms: Anti-Bacterial Agents/administration & dosage; Anti-Bacterial Agents/adverse effects*; Anti-Bacterial Agents/pharmacokinetics
Fulltext Ludwig's angina--a case report

Nor GM

Med J Malaysia, 1989 Dec;44(4):344-7.
PMID: 2520046

Ludwig's angina is a potentially lethal oro-facial cellulitis due to oro-dental infection. The aetiology and management of a case of Ludwig's angina are briefly discussed.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Antibacterial-Integrated Collagen Wound Dressing for Diabetes-Related Foot Ulcers: An Evidence-Based Review of Clinical Studies

N Amirrah I, Mohd Razip Wee MF, Tabata Y, Bt Hj Idrus R, Nordin A, Fauzi MB

Polymers (Basel), 2020 Sep 22;12(9).
PMID: 32972012 DOI: 10.3390/polym12092168

Diabetic foot ulcer (DFU) is a chronic wound frequently delayed from severe infection. Wound dressing provides an essential barrier between the ulcer and the external environment. This review aimed to analyse the effectiveness of antibacterial collagen-based dressing for DFU treatment in a clinical setting. An electronic search in four databases, namely, Scopus, PubMed, Ovid MEDLINE(R), and ISI Web of Science, was performed to obtain relevant articles published within the last ten years. The published studies were included if they reported evidence of (1) collagen-based antibacterial dressing or (2) wound healing for diabetic ulcers, and (3) were written in English. Both randomised and non-randomised clinical trials were included. The search for relevant clinical studies (n) identified eight related references discussing the effectiveness of collagen-based antibacterial wound dressings for DFU comprising collagen impregnated with polyhexamethylene biguanide (n = 2), gentamicin (n = 3), combined-cellulose and silver (n = 1), gentian violet/methylene blue mixed (n = 1), and silver (n = 1). The clinical data were limited by small sample sizes and multiple aetiologies of chronic wounds. The evidence was not robust enough for a conclusive statement, although most of the studies reported positive outcomes for the use of collagen dressings loaded with antibacterial properties for DFU wound healing. This study emphasises the importance of having standardised clinical trials, larger sample sizes, and accurate reporting for reliable statistical evidence confirming DFU treatment efficiency.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Lesson learnt: first reported case of complicated cutaneous pythiosis in a dog in Malaysia

Omar, S., Mohd Zainudin, N.A.I., Azman, N., Jessie-Bay, J.X.

Jurnal Veterinar Malaysia, 2019;31(1):34-37.
MyJurnal

This report documents a case of 5-month old intact male German Shepherd dog diagnosed with pythiosis on its left forelimb. This is the first ever reported case of pythiosis presented at the University Veterinary Teaching Hospital (UVH), Universiti Putra Malaysia and may be the first ever reported incidence in Malaysia with a complaint of a chronic non-healing wound. The case became complicated as the dog was concurrently infected with a mixed bacterial infection and the identified bacteria were resistant towards a number of antibiotics tested. The antibiotic that was determined to be sensitive was only able to act on certain bacteria and not to the others. The journey of getting to the final diagnosis was almost impossible if we had not tried different media preparation: with and without Dermasel supplement; and through molecular approach using amplification at ITS region followed by DNA sequence analysis. The unwarranted lack during the diagnosis process of this incidence has made us more aware of the presence of Pythium insidiosum in Malaysia and plan for a more strategize ways of diagnosing the suspected fungus at laboratory setting in future. The objective of this paper is to share our experience and reflection on the diagnosis of the rare incidence of pythiosis present in Malaysia.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Health benefits and potential risk of tropical herbs from the leguminosae family: a review

Fatin Afifah Rosli, Mohd Rahman Omar, Abdul Aziz Marwan, Ummu Aiman Faisal, Hana Maizuliana Solehan, Ummi Affah Mahamad, et al.

Malaysian Journal of Medicine and Health Sciences, 2019;15(106):59-59.
MyJurnal

Introduction:Tropical herbs are used as a medicine long before the introduction of modern medicine, especially by traditional healers. However, its’ scientific benefits are not widely investigated. There is a belief that the use of tradi-tional herbs potentially causing health deterioration due to its unknown mechanism of actions and interactions, and the nature of its unregulated processing as a health supplement. Parkia speciosa (local: petai) and Pithecellobium jir-inga (local: jering) are two tropical herbs from the Leguminosae family that are widely used raw as salads with many perceived health benefits and harms. We reviewed both species, looking into scientific pieces of evidence supporting the belief. Methods: The databases of MEDLINE, PubMed, EBSCOhost, and Google Scholars were systematically searched for both in vitro and in vivo effects of both species with no language restriction. Data were extracted using standardised fashioned. Results:P speciosa has pharmacological properties including antioxidant and anti-inflam-mation. It has shown to have antibacterial properties and glucose-lowering activity. P jiringa contains known an-tioxidant metabolites such as flavonoids, phenolics and terpenoids. It also contains antiangiogenic properties with potential use in retinopathy, cancer, and Rheumatoid arthritis. However, both herbs have potentially harmful effects which include liver injuries. Large consumption of P jiringa leads to acute kidney injury. Conclusion: Consumption of both P speciosa and P jiringa has medicinal properties as well as health harm. If taken as a supplement, rigorous clinical trials are needed to delineate benefit vs harm effect of both herbs.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext The antibacterial and antibiofilm activity of aqueous oil palm (Elaeis guineensis) leaf extracts against Staphylococcus aureus

Nur Fatihah Nordin, Hasnah Begum Said Gulam Khan, Kazi Ahsan Jamil, Nurul ‘Izzah Mohd Sarmin

Malaysian Journal of Medicine and Health Sciences, 2019;15(108):34-34.
MyJurnal

Introduction:Staphylococcus aureus is a Gram-positive staphylococci that form biofilms. Bacteria that dwell in bio-films tend to be highly resistant towards the action of antibiotics. S. aureus is a main cause of infections in the oral cavity such as angular cheilitis, endodontic infections, osteomyelitis of the jaw, parotitis and oral mucositis. Previous studies reported that S. aureus also spread to the other parts of the body through the circulatory system, which may lead to chronic infections. Hence the search for new antibacterial agents remains high and needs urgent attention to treat this problem. Plants offer a rich source of antimicrobial agents and bioactive compounds. In this study, aque-ous oil palm leaf extracts (OPLE) has been used as an alternative antibacterial agent against oral infections mainly caused by Staphylococcus aureus. Many studies report the potential use of oil palm leaf extracts in treating bacterial infections such as Escherichia coli, Salmonella sp., Staphylococcus aureus (isolated from other part of the body), Pseudomonas aeruginosa and Bacillus sp. Although previous studies have documented the antimicrobial properties of oil palm leaf extracts, to date no study has been reported on the effect of oil palm leaf extract on oral microbes. Methods: The agar diffusion method, minimum inhibitory concentration (MIC) and minimal bactericidal concen-tration (MBC) assay were conducted in order to observe the antibacterial activity of aqueous oil palm leaf extract. The crystal violet assay was used to determine the anti-biofilm activity of the extracts. Chlorhexidine and deionised distilled water were used as the positive and negative control respectively. For agar diffusion method, the diameter of inhibition zone was measured. Results: The inhibition zone of the tested bacteria was observed between 0-20mm. The MIC and MBC assay were used to know the lowest concentrations of the extract that inhibit the growth and killed the tested bacteria respectively. The MIC and MBC values for the tested bacteria were observed between 0-7.813mg/mL. While for anti-biofilm assays, OPLE aqueous extract acts as a potent anti-biofilm agent with dual actions, pre-venting and eradicating the biofilm of the tested bacteria. Conclusion: In conclusion, the tested plant extracts could serve as alternative natural antibacterial and anti-biofilm agent against oral infections.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Antibacterial activity of Spilanthes acmella flower extracts (SAFE) against Streptococcus mutans

Siti Aisyah Abd Ghafar, Muhammad Fikhry Mohd Salehuddin,, Nur Syamimi Syuhada Che Awang, Rohazila Mohamad Hanafiah

Malaysian Journal of Medicine and Health Sciences, 2019;15(108):42-42.
MyJurnal

Introduction:Spilanthes acmella, also known as “subang nenek’, has been used traditionally in Malaysia to treat toothache. A previous study has shown Spilanthes acmella leaves extracts (SALE) inhibit Streptococcus mutans growth. Streptococcus mutans is commonly found in the human oral cavity and is the main contributor to tooth de-cay. There is no study on the antibacterial effects of Spilanthes acmella flower extracts (SAFE) against Streptococcus mutans reported to date. Therefore, the objective of this study is to investigate antibacterial properties of SAFE against S. mutans. Methods:S. mutans was subcultured in Muller Hinton (MH) broth and agar. Sequential extractions of S. acmella flowers were conducted using four different solvents with increasing polarity, [n- hexane, dichloromethane (DCM), acetone, methanol (MeoH)] and tested with different concentrations against S. mutans via the disc diffusion assay, minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). Sodium fluoride (NaF) was used as a positive control while DMSO was used as a negative control. Results: The disc diffusion assay shows SAFE inhibited Streptococcus mutans growth. SAFE-DCM shows the greatest inhibition properties (12.33±2.30 mm) followed by SAFE-n-hexane (11.33±0.57 mm). Meanwhile, SAFE-Meoh and SAFE-acetone show no inhibition zone (6.00±0.001 mm). MIC value for SAFE-DCM and SAFE-n-hexane is 12.5 mg/mL respectively. Whereas, MBC value SAFE-DCM and SAFE-n-hexane is 50.0 mg/mL respectively. Conclusion: It can be concluded SAFE-DCM and SAFE-n-hexane possesses bactericidal properties against Streptococcus mutans.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Development of Polyvinylidene Fluoride Membrane by Incorporating Bio-Based Ginger Extract as Additive

Fahrina A, Arahman N, Mulyati S, Aprilia S, Mat Nawi NI, Aqsha A, et al.

Polymers (Basel), 2020 Sep 03;12(9).
PMID: 32899138 DOI: 10.3390/polym12092003

Biofouling on the membrane surface leads to performance deficiencies in membrane filtration. In this study, the application of ginger extract as a bio-based additive to enhance membrane antibiofouling properties was investigated. The extract was dispersed in a dimethyl acetamide (DMAc) solvent together with polyvinylidene fluoride (PVDF) to enhance biofouling resistance of the resulting membrane due to its antibiotic property. The concentrations of the ginger extract in the dope solution were varied in the range of 0-0.1 wt %. The antibacterial property of the resulting membranes was assessed using the Kirby Bauer disc diffusion method. The results show an inhibition zone formed around the PVDF/ginger membrane against Escherichia coli and Staphylococcus aureus demonstrating the efficacy of the residual ginger extract in the membrane matrix to impose the antibiofouling property. The addition of the ginger extract also enhanced the hydrophilicity in the membrane surface by lowering the contact angle from 93° to 85°, which was in good agreement with the increase in the pure water flux of up to 62%.

Matched MeSH terms: Anti-Bacterial Agents
Seeking key microorganisms for enhancing methane production in anaerobic digestion of waste sewage sludge

Mustapha NA, Hu A, Yu CP, Sharuddin SS, Ramli N, Shirai Y, et al.

Appl Microbiol Biotechnol, 2018 Jun;102(12):5323-5334.
PMID: 29696331 DOI: 10.1007/s00253-018-9003-8

Efficient approaches for the utilization of waste sewage sludge have been widely studied. One of them is to use it for the bioenergy production, specifically methane gas which is well-known to be driven by complex bacterial interactions during the anaerobic digestion process. Therefore, it is important to understand not only microorganisms for producing methane but also those for controlling or regulating the process. In this study, azithromycin analogs belonging to macrolide, ketolide, and lincosamide groups were applied to investigate the mechanisms and dynamics of bacterial community in waste sewage sludge for methane production. The stages of anaerobic digestion process were evaluated by measuring the production of intermediate substrates, such as protease activity, organic acids, the quantification of bacteria and archaea, and its community dynamics. All azithromycin analogs used in this study achieved a high methane production compared to the control sample without any antibiotic due to the efficient hydrolysis process and the presence of important fermentative bacteria and archaea responsible in the methanogenesis stage. The key microorganisms contributing to the methane production may be Clostridia, Cladilinea, Planctomycetes, and Alphaproteobacteria as an accelerator whereas Nitrosomonadaceae and Nitrospiraceae may be suppressors for methane production. In conclusion, the utilization of antibiotic analogs of macrolide, ketolide, and lincosamide groups has a promising ability in finding the essential microorganisms and improving the methane production using waste sewage sludge.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Massive Tibial Bone Regeneration with Autologous Peripheral Blood Stem Cells using Ilizarov Bone Transport: A Case Report

Saw KY, Gill R, Low TC

Malays Orthop J, 2020 Nov;14(3):166-169.
PMID: 33403079 DOI: 10.5704/MOJ.2011.026

This is a case report of a Gustilo-Anderson Type IIIB comminuted open right tibial fracture with massive bone loss, complicated by methicillin-resistant Staphylococus aureus (MRSA) infection. Non-viable and contaminated bony fragments were removed and infected bone resected. Soft tissue coverage and antibiotics were effective against the MRSA infection. A unifocal bone transport with the Ilizarov method regenerated 13cm of the missing tibia. Autologous peripheral blood stem cells (PBSC) injections into the osteogenesis site boosted bone regeneration and consolidation with a shortened Bone Healing index (BHI) of 23 days/cm.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext The Effect of Doxycycline on Achilles Tendon Repair in a Rat Model

Sobhani-Eraghi A, Panahi M, Shirani A, Pazoki-Toroudi H

Malays Orthop J, 2020 Nov;14(3):155-160.
PMID: 33403077 DOI: 10.5704/MOJ.2011.024

Introduction: Doxycycline is a commonly used antibiotic that is also a potent inhibitor of matrix metalloproteinase (MMPs). The use of doxycycline in repairing tendon lesions has been previously investigated and conflicting findings have been reported on its effectiveness. In this study, we sought to evaluate the effects of exposure to doxycycline on Achilles tendon repair.
Materials and Methods: Twenty healthy rats of the same breed and gender were randomly assigned to two groups of sham, and Doxycycline group therapy. The rats underwent a surgical intervention in which a 2mm incision was performed on the lateral sides of the right Achilles tendons. The treatment group received oral gavage administrations of 50mg/kg/day of doxycycline for 30 days. After this duration, tissue samples were taken from the site of the injuries, which were then histologically evaluated for alignment of the collagen fibres, inflammation reaction, cellular density, and fibroblastic activity.
Results: The histological assessment of the tissue samples, revealed significant changes in the repaired tissues of the treatment group in comparison to the sham group; namely more irregularity in the alignment of the collagen fibres, increased cellular density, and increased fibroblastic activity. However, only the alignment of the collagen fibres reached the statistical significance.
Conclusion: The results of this study indicate that exposure to doxycycline may result in the improvement of repair of the Achilles tendon injuries, especially collagen filament integrity.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Case report of bilateral testicular infarction due to severe bilateral epididymo-orchitis: A catastrophic complication causing castration

Ong Lay Keat W, Lechmiannandan S, Manoharan D, Lee SB, Nagalingam P

Int J Surg Case Rep, 2020;73:161-163.
PMID: 32688238 DOI: 10.1016/j.ijscr.2020.07.013

INTRODUCTION: Testicular infarction as a result of severe epididymo-orchitis is an uncommon urological emergency, with only a handful of reported cases in literature. We report an even rarer case of bilateral epididymo-orchitis complicated with testicular infarction, resulting in bilateral orchidectomy.
PRESENTATION OF CASE: 49 year old gentleman presented with fever, persistent, unresolving pain and scrotal swelling of two weeks duration. Despite close clinical monitoring, timely ultrasounds of the testis and antibiotics there was an inexorable progression to bilateral testicular ischemia.
DISCUSSION: This is only the second reported case of this nature in published literature. Epididymo-orchitis usually responds well to appropriate antibiotic therapy, although progression to testicular infarction is possible.
CONCLUSION: Clinical presentation of persistent scrotal pain and oedema in cases of epididymo-orchitis should raise strong suspicion of testicular ischemia or infarction. Despite all efforts, progression to bilateral testicular infarction resulting in castration is a possible catastrophic outcome.

Matched MeSH terms: Anti-Bacterial Agents
Parental preferences in treatment of acute uncomplicated appendicitis comparing surgery to conservative management with antibiotics and their views on research participation

Kyaw L, Pereira NK, Ang CX, Choo CSC, Nah SA

Eur J Pediatr, 2020 May;179(5):735-742.
PMID: 31897841 DOI: 10.1007/s00431-019-03555-w

Studies show that conservative management in acute uncomplicated appendicitis (AUA) is an alternative to surgery. This study aims to determine factors affecting parental preference in management of AUA and their decision for research participation. We conducted surveys on parents whose children were admitted with suspicion of appendicitis but later confirmed not to have appendicitis. Information on appendicectomy versus conservative treatment with antibiotics was provided using a fixed script and standard information leaflet. Questionnaires covered factors influencing decisions, opinions regarding research, treatment preference and demographic data. We excluded parents not fluent in English. Of 113 respondents, 71(62.8%) chose antibiotics, 39(34.5%) chose appendicectomy, and 3(2.7%) had no preference. Reasons given for choosing antibiotics were fear of surgical risks and preferring less invasive treatment. Those choosing appendicectomy expressed preference for definitive treatment and fear of recurrence. Majority were against randomisation (n = 89, 78.8%) and blinding (n = 90, 79.7%). Over half found difficulty involving their child in research (n = 65, 57.5%). Most thought that research is important (66.4%) and beneficial to others (59.3%). Parents who perceived their child as healthy found research riskier (p = 0.039). Educated parents were more likely to find research beneficial to others (p = 0.012) but less accepting of randomisation (p = 0.001).Conclusion: More parents appear to prefer conservative treatment for acute uncomplicated appendicitis. Researchers must consider parental concerns regarding randomisation and blinding.What is Known:• Conservative management of acute uncomplicated appendicitis in paediatric patients is safe and effective, sparing the child the need for an operation; however, neither conservative nor surgical management is proven to be superior.• Randomised controlled trials provide the highest level of evidence, but it is challenging to recruit paediatric patients as participants in such clinical trials.What is New:• More parents prefer conservative management of uncomplicated appendicitis over surgical management for their children due to fear of surgical risks and complications• Randomisation in trial design is significantly associated with a parent's decision to reject their child's participation in a clinical trial.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Molecular and antimicrobial analyses of non-classical Bordetella isolated from a laboratory mouse

Loong SK, Mahfodz NH, Wali HA, Talib SA, Nasrah SN, Wong PF, et al.

J Vet Med Sci, 2016 May 3;78(4):715-7.
PMID: 26782013 DOI: 10.1292/jvms.15-0472

Accurate identification and separation of non-classical Bordetella species is very difficult. These species have been implicated in animal infections. B. hinzii, a non-classical Bordetella, has been isolated from mice in experimental facilities recently. We isolated and characterized one non-classical Bordetella isolate from the trachea and lung of an ICR mouse. Isolate BH370 was initially identified as B. hinzii by 16S ribosomal DNA and ompA sequencing. Additionally, isolate BH370 also displayed antimicrobial sensitivity profiles similar to B. hinzii. However, analyses of nrdA sequences determined its identity as Bordetella genogroup 16. The isolation of BH370 from a healthy mouse suggests the possibility of it being a commensal. The nrdA gene was demonstrated to possess greater phylogenetic resolution as compared with 16S ribosomal DNA and ompA for the discrimination of non-classical Bordetella species.

Matched MeSH terms: Anti-Bacterial Agents
Clinical and radiographic evaluation of chloramphenicol-tetracycline-zinc eugenol oxide antibiotic paste in pulp treatment

Jesús Luengo Fereira, Heraclio Reyes Rivas, Luz Elena Carlos Medrano, Iovanna Toscano, Minerva Anaya Alvarez

Sains Malaysiana, 2018;47:971-976.

This study has been carried out to evaluate the clinical and radiographic CTZ (Chloramphenicol-Tetracycline-Zinc
Eugenol Oxide) antibiotic paste in pulpotomies of primary molars. A Quasi-experimental study in 43 primary molars
of children aged 3 to 7 years. Pulpotomies were performed on the selected patients with the CTZ antibiotic paste. Teeth
were restored with glass ionomer and preformed steel metal crowns. Clinical and radiographic evaluation was performed
at 6 and 12 months. SPSS V-19 program for data analysis and chi-square test was used up to 5%. Success rates were
observed during the evaluation periods of time. 93% (x2
= 0.446, p>0.05) and 88.4% (x2
= 0.431, p>0.05) of the clinical form;
97.7% (x2
= 0.534, p>0.05) and 93% (x2
= 0.553, p>0.05) were radiographic, at 6 and 12 months, respectively. The CTZ antibiotic
paste is an alternative in the treatment of pulpotomy of molars. It provides an antimicrobial effect, decreased operative time, without
causing trauma to the pediatric patient.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Synthesis, characterization and application of gelatin-carboxymethyl cellulose blend films for preservation of cherry tomatoes and grapes

Samsi MS, Kamari A, Din SM, Lazar G

J Food Sci Technol, 2019 Jun;56(6):3099-3108.
PMID: 31205364 DOI: 10.1007/s13197-019-03809-3

In the present study, gelatin-carboxymethyl cellulose blend film was synthesized, characterized and applied for the first time to preserve cherry tomatoes (Solanum lycopersicum var. cerasiforme) and grapes (Vitis vinifera). Gelatin (Gel) film forming solution was incorporated with carboxymethyl cellulose (CMC) at three volume per volume (Gel:CMC) ratios, namely 75:25, 50:50 and 25:75. CMC treatment has improved the transparency, tensile strength (TS), elongation at break (EAB), water vapor permeability and oxygen permeability of gelatin films. A pronounced effect was obtained for 25Gel:75CMC film. The TS and EAB values were increased from 25.98 MPa and 2.34% (100Gel:0CMC) to 37.54 MPa and 4.41% (25Gel:75CMC), respectively. A significant improvement in antimicrobial property of gelatin films against two food pathogens, namely Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) was obtained in the presence of CMC. The effectiveness of gelatin-CMC blend films to extend the shelf life of agricultural products was evaluated in a 14-day preservation study. The gelatin-CMC films were successfully controlled the weight loss and browning index of the fruits up to 50.41% and 31.34%, respectively. Overall, gelatin-CMC film is an environmental friendly film for food preservation.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Chronic Osteomyelitis Revisited: A Case Report

Chuah SK, Bajuri MY, Mohd Nor F

Cureus, 2019 Jun 28;11(6):e5023.
PMID: 31501722 DOI: 10.7759/cureus.5023

Chronic osteomyelitis treatment is always a challenge to orthopaedic surgeons which requires great dedication and perseverance. We report a successful limb salvage case of a 46-year-old man who suffered from a left tibia chronic osteomyelitis with soft tissue defect. The treatment approach was a thorough wound debridement of devitalized tissues and necrotized bone, commencement of culture-directed antibiotics, reconstruction with vascularized osteomyocutaneous fibula flap, and skeletal stabilization with internal fixation. As compared to below knee amputation, the result we obtained in this case is more promising with regard to mobility and function.

Matched MeSH terms: Anti-Bacterial Agents
Genomic characterization of endemic Salmonella enterica serovar Typhimurium and Salmonella enterica serovar I 4,[5],12:i:- isolated in Malaysia

Ngoi ST, Yap KP, Thong KL

Infect Genet Evol, 2018 08;62:109-121.
PMID: 29684710 DOI: 10.1016/j.meegid.2018.04.027

Salmonella enterica serovar Typhimurium (S. Typhimurium) and the monophasic variant Salmonella I 4,[5],12:i:- are two clinically-important non-typhoidal Salmonella serovars worldwide. However, the genomic information of these two organisms, especially the monophasic variant, is still lacking in Malaysia. The objective of the study was to compare the genomic features of a monophasic variant and two endemic S. Typhimurium strains isolated from humans. All three strains were subjected to whole genome sequencing followed by comparative genomic and phylogenetic analyses. Extensive genomic deletion in the fljAB operon (from STM2757 to iroB) is responsible for the monophasic phenotype of STM032/04. The two S. Typhimurium genomes (STM001/70 and STM057/05) were essentially identical, despite being isolated 35 years apart. All three strains were of sequence type ST19. Both S. Typhimurium genomes shared unique prophage regions not identified in the monophasic STM032/04 genome. Core genome phylogenetic analyses showed that the monophasic STM032/04 was closely-related to the S. Typhimurium LT2, forming a distinctive clade separated from the two endemic S. Typhimurium strains in Malaysia. The presence of serovar Typhimurium-specific mdh gene, conserved Gifsy and Fels-1 prophages, and the close genomic resemblance with S. Typhimurium LT2 suggested that the monophasic STM032/04 was originated from an LT2-like S. Typhimurium ancestor in Malaysia, following an evolutionary path different from the S. Typhimurium strains. In conclusion, the monophasic Salmonella I 4,[5],12:i:- and the S. Typhimurium strains isolated in Malaysia descended from different phylogenetic lineages. The high genomic resemblance between the two S. Typhimurium strains isolated for at least 35 years apart indicated their successful evolutionary lineage. The identification of multiple virulence and antimicrobial resistance determinants in the Salmonella I 4,[5],12:i:- and S. Typhimurium genomes explained the pathogenic nature of the organisms.

Matched MeSH terms: Anti-Bacterial Agents
Fulltext Phytochemical properties and traditional uses of selected medicinal plants in Malaysia: a review

A’attiyyah A.A., Wan Afiqah Syahirah W.G., Kannan, T.P., Suharni M., Ahmad A., Nor Azah M.A.

Journal of Biomedical and Clinical Sciences, 2017;2(2):14-25.
MyJurnal

Medicinal plants have healing properties and are able to synthesize various chemical compounds. These chemicals (also known as phytochemical compounds) play vital roles in determining the pharmacological properties existing in certain plants. The phytochemical compounds present in plants are associated with primary and secondary constituents. Most of the time, the secondary constituents exhibit the bioactivities in plants such as antimicrobial, antioxidant, antidiabetic, antibacterial and anti-inflammatory properties. Some common medicinal plants that have been used in curing various diseases by traditional practitioners in Malaysia are Ficus deltoidea Jack, Andrographis paniculata, Curcuma longa, Clinacanthus nutans and Eurycoma longifolia Jack. This review discusses the morphology, phytochemical compounds and phytochemical properties of selected medicinal plants in Malaysia. The plants of focus have been found to possess anti-cancer and anti-diabetic effects. This review, it is hoped will enable Malaysian researchers to explore further on the potential of these plants in investigating new and novel drugs in the future.

Matched MeSH terms: Anti-Bacterial Agents
Biomedical applications of chitosan electrospun nanofibers as a green polymer - Review

Kalantari K, Afifi AM, Jahangirian H, Webster TJ

Carbohydr Polym, 2019 Mar 01;207:588-600.
PMID: 30600043 DOI: 10.1016/j.carbpol.2018.12.011

This review outlines new developments in the biomedical applications of environmentally friendly ('green') chitosan and chitosan-blend electrospun nanofibers. In recent years, research in functionalized nanofibers has contributed to the development of new drug delivery systems and improved scaffolds for regenerative medicine, which is currently one of the most rapidly growing fields in all of the life sciences. Chitosan is a biopolymer with non-toxic, antibacterial, biodegradable and biocompatible properties. Due to these properties, they are widely applied for biomedical applications such as drug delivery, tissue engineering scaffolds, wound dressings, and antibacterial coatings. Electrospinning is a novel technique for chitosan nanofiber fabrication. These nanofibers can be used in unique applications in biomedical fields due to their high surface area and porosity. The present work reviews recent reports on the biomedical applications of chitosan-based nanofibers in detail.

Matched MeSH terms: Anti-Bacterial Agents

Filters

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

External Links