Browse publications by year: 2017

  1. Tan SS, Adlin Nadia Z
    Med J Malaysia, 2017 06;72(3):165-174.
    PMID: 28733564 MyJurnal
    AIM: To describe the clinical characteristic of hepatitis C (HCV) patients and the results of pegylated interferon and ribavirin (PegIFN/RBV) therapy in a routine clinical practice.

    METHODS: A retrospective review of consecutive HCV patients treated with PegIFN/RBV in 2004 to 2012.

    RESULTS: A total of 273 patients received treatment. The mean age was 44.16 ± 10.5 years and 76% were male. The top 2 self-reported risks were blood or blood product transfusion before 1994 and injection drug use, found in 57.1% of patients. The predominant HCV genotype (GT) was 3 at 60.6%, second was GT1 at 36.1% and other GTs were uncommon at about 1% or less. About half of our patients have high baseline viral load (>800,000 iu/ml), 18.3% had liver cirrhosis and 22.3% had HIV co-infection. Co-morbid illness was found in 42.9%, hypertension and type 2 diabetes were the two most common. The overall sustained virological response (SVR) by intention-to-treat analysis were 54.9% (n=150/273), 41.2% (40/97) for GT1, 100% (5/5) for GT2 and 62% (101/163) for GT3. Subgroup analysis for HCV monoinfected, treatment naïve showed SVR of 49.2% (31/63) for GT1, 100% (5/5) for GT2 and 67% (69/103) for GT3. In HCV mono-infected and treatment experienced (n=29), the SVR was 28.6% (4/14) for GT1, 21.4% (69/103) for GT3. In the HIV/HCV co-infected, treatment naïve (n=56), the SVR was 28.6% (4/14) for GT1 and 64.3% (27/42) for GT3. Treatment naïve GT3 mono-infected patients had a statistically significant higher SVR compared to treatment experienced patients (P=0.001). In GT3 patients who achieved rapid virological response, the SVR was significantly higher at 85.2% (P< 0.001). The SVR for cirrhotics were low especially for GT1 at 21% (4/19) and 31% (4/13) based on all patients and treatment naïve HCV monoinfected respectively. In GT3 cirrhotics the corresponding SVR were 57.1% (16/28) and 60.9% (14/23). Premature discontinuation rate was 21.2% with the majority due to intolerable adverse events at 12.1%.

    CONCLUSIONS: In our routine clinical practice, the HCV patients we treated were young, predominantly of GT3 and many had difficult-to-treat clinical characteristics. The SVR of our patients were below those reported in Asian clinical trials but in keeping with some "real world" data.

    MeSH terms: Adolescent; Adult; Aged; Antiviral Agents/administration & dosage; Antiviral Agents/therapeutic use*; Drug Therapy, Combination; Female; Humans; Male; Middle Aged; Polyethylene Glycols/administration & dosage; Polyethylene Glycols/therapeutic use*; Recombinant Proteins/administration & dosage; Recombinant Proteins/therapeutic use; Ribavirin/therapeutic use*; Treatment Outcome; Interferon-alpha/administration & dosage; Interferon-alpha/therapeutic use*; Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/pathology; Young Adult
  2. Rehan N, Qayyum K
    Med J Malaysia, 2017 06;72(3):175-178.
    PMID: 28733565
    BACKGROUND: Although the incidents of customary marriages are frequently reported in Pakistani press, yet no large scale community-based study has ever been conducted to gauge the magnitude of such marriages. The present study is the first-ever community based study on this topic.

    METHODS: 4,385 ever-married women, aged 18-83 years, from six rural districts, were interviewed to enquire about the types of their marriages. The data was collected through interviews conducted by trained female interviewers and analysed through SPSS-20.

    RESULTS: Twelve percent marriages were the result of Vanni, Swara, Sang Chatti, Badal , Bazo i.e. to settle blood feuds; 58.7% were Watta-Satta / Pait Likhai i.e. exchange marriages and pledging a fetus; in 7.9% case bride was bought; 1.0% marriages were Badle-Sullah i.e to settle dispute other than murder and 0.1% women were married to Quran. The traditional marriages, where wishes of both families and consent of the couple to be married are also considered, constituted 20.3%. The prevalence of Vanni, Swara / Sang Chatti / Badal / Bazo was the highest in Balochistan (22-24%) followed by Sindh (5-17%) and the least in Punjab (0-4%). The other practices in Balochistan were selling the bride (10-17%), Badle-Sulah (3%) and marriage to Quran (1%). Watta Satta was most prevalent in Sindh (66-78%), where 3-13% brides were bought. In Punjab also Watta-Satta was common (44-47%), where 0.5-4% brides were bought and 0.3-3% marriages were Budle-Sullah.

    CONCLUSIONS: Since laws against these harmful customs exist but are not applied forcefully, there is a great need to create massive awareness against such customs.

    MeSH terms: Adolescent; Adult; Aged; Aged, 80 and over; Culture*; Ethnic Groups/statistics & numerical data; Female; Humans; Interviews as Topic; Islam; Male; Marriage/ethnology*; Marriage/statistics & numerical data; Middle Aged; Pakistan; Rural Population/statistics & numerical data*; Young Adult
  3. Wong KW, Lojikip S, Chan FS, Goh KW, Pang HC
    Med J Malaysia, 2017 06;72(3):179-185.
    PMID: 28733566 MyJurnal
    AIM: To study the epidemiology, clinical characteristics, vascular access, and the short term survival of ESRD patients initiated on dialysis from Hospital Queen Elizabeth (HQE).

    BACKGROUND: The number of patients with ESRD is increasing in Sabah, Malaysia. Most patients present late and some live in remote areas with difficult access to healthcare services. Many therefore present with potentially fatal complications.

    METHODS: All the newly confirmed ESRD patients who were initiated on renal replacement therapy (RRT) from 1 January to 31 December 2014 were included. The basic epidemiological and clinical data were collected. They were divided into three groups: Group 1 - those known to the medical service and had been prepared properly for the initiation of RRT; Group 2 - those known to the medical service, but were not prepared for the RRT; Group 3 - those with undiagnosed CKD. Outcome is mainly survival at 3rd, 6th, 9th and 12th month.

    RESULTS: There were 249 ESRD patients. 153 (61.4%) were male. The average age was 53.3 (range 12 - 83). The main cause of ESRD was diabetic nephropathy (128 patients, 51.4%). Most patients were started on RRT with a catheter (74.3%), 47 patients (18.9%) with a fistula, and 17 patients (6.8%) with a Tenckhoff catheter. 185 (74.3%) patients were not prepared properly (Group 2 - 66.3%, and Group 3 - 8.0%). The survival for 249 patients were 86.3% at 6 months, 77.9% at 12 months. Group 2 has the worst survival (81.9% at 6 months, 71.1% at 12 months).

    CONCLUSIONS: Our data showed that most patients (74.3%) were started on dialysis in an unplanned manner with poor survival. A comprehensive and well-supported predialysis programme is needed.
    MeSH terms: Adolescent; Adult; Age Factors; Aged; Aged, 80 and over; Child; Cross-Sectional Studies; Female; Humans; Kidney Failure, Chronic/diagnosis; Kidney Failure, Chronic/mortality; Kidney Failure, Chronic/epidemiology*; Malaysia/epidemiology; Male; Middle Aged; Sex Factors; Survival Analysis; Renal Replacement Therapy/statistics & numerical data; Young Adult; Tertiary Care Centers/statistics & numerical data
  4. Enoma A, Ching SM, Hoo FK, Omar SFS
    Med J Malaysia, 2017 06;72(3):186-189.
    PMID: 28733567 MyJurnal
    INTRODUCTION: Erectile dysfunction (ED) has been associated with the treatment of human immunodeficiency virus (HIV) and chronic diseases. Sexual dysfunction data of male patients infected with HIV are still scarce in Malaysia, and ED appears to be under-reported. Therefore, this study aims to determine the prevalence and predictors of ED among male HIV patients at the University Malaya Medical Centre.

    METHODS: A cross sectional study was conducted among male HIV patients on antiretroviral therapy (ART) attending the outpatient clinic of a teaching hospital in Malaysia. A systematic random sampling method was employed in the selection of respondents. Participants were interviewed using a structured questionnaire with a 15-item international index of erectile function (IIEF-15). An appropriate statistical analysis was used to determine the associate and potential risk factors.

    RESULTS: A total of 220 males participated in this study with a mean age of 37.9±9.9; prevalence of ED among HIV patients was 82.3 % (n=180). The severity of ED was further categorized into: severe (24.1%), moderate (19.1%), mild to moderate (20.9%), and mild (18.3%). In a multivariate logistic regression analysis, patients with a lower educational background were more likely to be associated with ED (odds ratio [OR] 2.62, 95% confidence interval [CI] 1.02-6.72; pvalue 0.046).

    CONCLUSION: This study reports that ED was prevalent among adult HIV males who are on an ART regimen. Those with a lower educational background are more likely to have ED. Hence, in managing patients with HIV, physicians should seek to identify those patients at risk of developing ED for further intervention.
    MeSH terms: Adult; Aged; Educational Status; HIV; Hospitals, Teaching/statistics & numerical data; Humans; Erectile Dysfunction/etiology*; Erectile Dysfunction/epidemiology; Malaysia/epidemiology; Male; Middle Aged; Risk Factors; HIV Infections/complications*; HIV Infections/drug therapy; Prevalence; Logistic Models; Anti-HIV Agents/therapeutic use; Young Adult
  5. Ramalingam R, Kunalan S, Tang MM
    Med J Malaysia, 2017 06;72(3):190-192.
    PMID: 28733568 MyJurnal
    Onychomycosis is a common nail disease with numerous etiological pathogens. In order to determine and trend the local mycological pattern of culture-positive diseased nail samples sent from the Department of Dermatology, Hospital Kuala Lumpur, a five-year retrospective audit was carried out, which revealed that non-dermatophyte molds were the predominant fungi isolated, followed by yeasts and dermatophytes. This is similar to two previous studies in Malaysia, but varies greatly from other studies around the world which showed a dermatophyte-predominant prevalence. This could be due to the nature of the environment our patients encountered.
    MeSH terms: Candidiasis/microbiology; Candidiasis/epidemiology; Dermatomycoses/microbiology; Dermatomycoses/epidemiology; Arthrodermataceae; Humans; Malaysia/epidemiology; Nails/microbiology; Retrospective Studies; Onychomycosis/microbiology*; Onychomycosis/epidemiology; Prevalence
  6. Nik Azlan NM, Rossman H
    Med J Malaysia, 2017 06;72(3):193-194.
    PMID: 28733569 MyJurnal
    We are reporting a case of missed blunt traumatic aortic injury (BTAI). A 28 year male presented with chest pain following a motor vehicle accident. He was discharged following normal clinical signs and chest radiograph. The following day he complained of lower limb weakness. Traumatic aortic dissection was revealed via computer tomography (CT) of the thorax. BTAI cannot be ruled out with normal clinical signs and chest radiograph alone. CT thorax is mandatory to rule out BTAI in high impact chest injury.
    MeSH terms: Accidents, Traffic; Adult; Aneurysm, Dissecting/diagnosis; Aneurysm, Dissecting/etiology; Aorta/injuries*; Chest Pain/etiology; Humans; Male; Radiography, Thoracic; Tomography, X-Ray Computed; Wounds, Nonpenetrating/diagnosis*
  7. Lee KG
    Med J Malaysia, 2017 06;72(3):195-196.
    PMID: 28733570
    Frank's sign, also known as diagonal earlobe crease (DELC), was observed to be an aural sign of coronary artery disease (CAD). Since then, there has been much interest in examining this unique and controversial association. This report describes a patient who has bilateral complete and deep diagonal ear lobe creases, presented with angina and diagnosed to have coronary artery disease on angiography. The characteristics of the sign and its association with atherosclerotic disease were discussed.
    MeSH terms: Coronary Artery Disease/diagnosis; Coronary Artery Disease/pathology*; Ear, External/pathology*; Humans; Male; Middle Aged; Atherosclerosis/diagnosis; Atherosclerosis/pathology
  8. Gan YK, Azmi AZ, Ghani SA, Samsudin A
    Med J Malaysia, 2017 06;72(3):197-198.
    PMID: 28733571 MyJurnal
    This case report discusses the rare association of cerebral abscess related to conjunctivitis in an otherwise healthy child. A 6 year old boy presented with conjunctivitis was treated with topical antibiotics and resolved after a week. Conjunctival swab cultures grew MRSA. A month later he developed status epileptics and CT scans revealed a large cerebral abscess. He was treated with intravenous antibiotics which covered for MRSA, along with an incision and drainage for the cerebral abscess. Pus cultures grew MRSA. The patient recovered well with no disturbance in visual acuity or visual field. On post-operative follow ups, he had no other neurological deficit apart from a slight limp.
    MeSH terms: Linezolid/administration & dosage; Linezolid/therapeutic use; Anti-Bacterial Agents/administration & dosage; Anti-Bacterial Agents/therapeutic use; Brain Abscess/drug therapy; Brain Abscess/etiology*; Brain Abscess/microbiology; Child; Conjunctivitis, Bacterial/complications*; Conjunctivitis, Bacterial/drug therapy; Conjunctivitis, Bacterial/microbiology; Drainage; Humans; Infusions, Intravenous; Male; Staphylococcal Infections/drug therapy; Staphylococcal Infections/microbiology*; Tomography, X-Ray Computed; Methicillin-Resistant Staphylococcus aureus; Neuroimaging
  9. Tang WJ, Mat Saad AZ
    Med J Malaysia, 2017 06;72(3):199-201.
    PMID: 28733572 MyJurnal
    Eyelid reconstruction is complex and challenging since it is not only for structural and functional restoration, but also for an acceptable aesthetic result. In full thickness eyelid injuries, it will involve both anterior and posterior lamella. Therefore, when reconstructing the defect, it requires at least two layers; one will be a flap with blood supply, and the other can be a free graft. In this case, a rotational advancement cheek flap and composite graft were used to reconstruct the lower eyelid.
    MeSH terms: Accidental Falls; Cheek/surgery; Eyelids/injuries*; Eyelids/surgery; Humans; Male; Surgical Flaps/surgery; Reconstructive Surgical Procedures/methods*; Young Adult; Free Tissue Flaps/surgery
  10. Mohamed SIA, Jantan I, Haque MA
    Int Immunopharmacol, 2017 Sep;50:291-304.
    PMID: 28734166 DOI: 10.1016/j.intimp.2017.07.010
    Natural products with immunomodulatory activity are widely used in treatment of many diseases including autoimmune diseases, inflammatory disorders in addition to cancer. They gained a great interest in the last decades as therapeutic agents since they provide inexpensive and less toxic products than the synthetic chemotherapeutic agents. Immunomodulators are the agents that have the ability to boost or suppress the host defense response that can be used as a prophylaxis as well as in combination with other therapeutic modalities. The anticancer activity of these immunomodulators is due to their anti-inflammatory, antioxidant, and induction of apoptosis, anti-angiogenesis, and anti-metastasis effect. These natural immunomodulators such as genistein, curcumin, and resveratrol can be used as prophylaxis against the initiation of cancer besides the inhibition of tumor growth and proliferation. Whereas, immunostimulants can elicit and activate humoral and cell-mediated immune responses against the tumor that facilitate the recognition and destruction of the already existing tumor. This review represents the recent studies on various natural immunomodulators with antitumor effects. We have focused on the relationship between their anticancer activity and immunomodulatory mechanisms. The mechanisms of action of various immunomodulators such as polyphenolic compounds, flavonoids, organosulfur compounds, capsaicin, vinca alkaloids, bromelain, betulinic acid and zerumbone, the affected cancerous cell lines in addition to the targeted molecules and transcriptional pathways have been review and critically analyzed.
    MeSH terms: Adjuvants, Immunologic; Anti-Inflammatory Agents; Antioxidants; Autoimmune Diseases; Biological Products; Bromelains; Capsaicin; Cell Line; Curcumin; Flavonoids; Immunity; Immunotherapy; Neoplasms; Vinca Alkaloids; Apoptosis; Genistein; Cell Proliferation
  11. Sepantafar M, Maheronnaghsh R, Mohammadi H, Radmanesh F, Hasani-Sadrabadi MM, Ebrahimi M, et al.
    Trends Biotechnol, 2017 11;35(11):1074-1087.
    PMID: 28734545 DOI: 10.1016/j.tibtech.2017.06.015
    Over the last decade, numerous investigations have attempted to clarify the intricacies of tumor development to propose effective approaches for cancer treatment. Thanks to the unique properties of hydrogels, researchers have made significant progress in tumor model reconstruction, tumor diagnosis, and associated therapies. Notably, hydrogel-based systems can be adjusted to respond to cancer-specific hallmarks and/or external stimuli. These well-known drug reservoirs can be used as smart carriers for multiple cargos, including both naked and nanoparticle-encapsulated chemotherapeutics, genes, and radioisotopes. Recent works have attempted to specialize hydrogels for cancer research; we comprehensively review this topic for the first time, synthesizing past results and defining paths for future work.
    MeSH terms: Animals; Drug Carriers/therapeutic use*; Drug Carriers/chemistry; Humans; Hydrogels/therapeutic use*; Hydrogels/chemistry; Nanoparticles/therapeutic use*; Nanoparticles/chemistry
  12. Nocca G, Ahmed HMA, Martorana GE, Callà C, Gambarini G, Rengo S, et al.
    J Endod, 2017 Sep;43(9):1545-1552.
    PMID: 28734651 DOI: 10.1016/j.joen.2017.04.025
    INTRODUCTION: The literature reveals controversies regarding the formation of para-chloroaniline (PCA) when chlorhexidine (CHX) is mixed with sodium hypochlorite (NaOCl). This study aimed to investigate the stability of PCA in the presence of NaOCl and to examine the in vitro cytotoxic effects of CHX/NaOCl reaction mixtures.

    METHODS: Different volumes of NaOCl were added to CHX (mix 1) or PCA (mix 2). Upon centrifugation, the supernatant and precipitate fractions collected from samples were analyzed using high-performance liquid chromatography. The cytotoxic effects of both fractions were examined on human periodontal ligament and 3T3 fibroblast cell lines.

    RESULTS: High-performance liquid chromatographic analysis showed no PCA signal when NaOCl was mixed with CHX (mix 1). In mix 2, the intensity of PCA was decreased when NaOCl was added to PCA, and chromatographic signals, similar to that of CHX/NaOCl, were also observed. The mortality of precipitates exerted on both cell lines was lower compared with that of supernatants.

    CONCLUSIONS: The discrepancy in the data from the literature could be caused by the instability of the PCA in the presence of NaOCl. The CHX/NaOCl reaction mixture exhibits a wide range of cytotoxic effects.

    MeSH terms: Aniline Compounds/toxicity*; Cell Line; Chlorhexidine/pharmacology*; Chromatography, High Pressure Liquid; Humans; Sodium Hypochlorite/pharmacology*; Toxicity Tests
  13. Ismail N, Ismail M, Azmi NH, Bakar MFA, Yida Z, Stanslas J, et al.
    Chem Biol Interact, 2017 Sep 25;275:61-73.
    PMID: 28734741 DOI: 10.1016/j.cbi.2017.07.014
    The study determined the effect of thymoquinone rich fraction (TQRF) and thymoquinone (TQ) in the forms of nano- and conventional emulsions on learning and memory, lipid peroxidation, total antioxidant status, antioxidants genes expression and soluble β-amyloid (Aβ) levels in rats fed with a high fat-cholesterol diet (HFCD). The TQRF was extracted from Nigella sativa seeds using a supercritical fluid extraction system and prepared into nanoemulsion, which later named as TQRF nanoemulsion (TQRFNE). Meanwhile, TQ was acquired commercially and prepared into thymoquinone nanoemulsion (TQNE). The TQRF and TQ conventional emulsions (CE), named as TQRFCE and TQCE, respectively were studied for comparison. Statin (simvastatin) and non-statin (probucol) cholesterol-lowering agents, and a mild-to-severe Alzheimer's disease drug (donepezil) were served as control drugs. The Sprague Dawley rats were fed with HFCD for 6 months, and treated with the intervention groups via oral gavage daily for the last 3 months. As a result, HFCD-fed rats exhibited hypercholesterolaemia, accompanied by memory deficit, increment of lipid peroxidation and soluble Aβ levels, decrement of total antioxidant status and down-regulation of antioxidants genes expression levels. TQRFNE demonstrated comparable effects to the other intervention groups and control drugs in serum biomarkers as well as in the learning and memory test. Somehow, TQRFNE was more prominent than those intervention groups and control drugs in brain biomarkers concomitant to gene and protein expression levels. Supplementation of TQRFNE into an HFCD thus could ameliorate memory deficit, lipid peroxidation and soluble Aβ levels as well as improving the total antioxidant status and antioxidants genes expression levels.
    MeSH terms: Animals; Antioxidants/metabolism; Blood Glucose/analysis; Body Weight/drug effects; Brain/metabolism; Emulsions/pharmacology*; Emulsions/chemistry; Gene Expression Regulation/drug effects; Lipids/blood; Male; Memory Disorders/drug therapy; Oxidoreductases/genetics*; Peptide Fragments/analysis*; Lipid Peroxidation/drug effects*; Benzoquinones/pharmacology*; Benzoquinones/therapeutic use; Benzoquinones/chemistry; Amyloid beta-Peptides/analysis*; Rats, Sprague-Dawley; Nigella sativa/metabolism; Nigella sativa/chemistry; Rats; Nanoparticles/chemistry*; Diet, High-Fat
  14. Yavari S, Malakahmad A, Sapari NB, Yavari S, Khan E
    J Environ Manage, 2017 Nov 01;202(Pt 1):225-231.
    PMID: 28735207 DOI: 10.1016/j.jenvman.2017.07.030
    Application of urea manufacturing wastewater to teak (Tectona grandis) trees, a fast growing tropical timber plants, is an environmentally-friendly and cost-effective alternative for treatment of nitrogen-rich wastewater. However, the plant growth is strongly limited by lack of phosphorus (P) and potassium (K) elements when the plants are irrigated with wastewater containing high concentration of nitrogen (N). A greenhouse experiment was conducted to optimize the efficiency of teak-based remediation systems in terms of nutrient balance. Twelve test solutions consisted of 4 levels of P (95, 190, 570, 1140 mgL-1) and 3 levels of K (95, 190, 570 mgL-1) with a constant level of N (190 mgL-1) were applied to teak seedlings every four days during the study period. Evapotranspiration rate, nutrient removal percentage, leaf surface area, dry weight and nutrient contents of experimental plants were determined and compared with those grown in control solution containing only N (N:P:K = 1:0:0). Teak seedlings grown in units with 1:0.5:1 N:P:K ratio were highly effective at nutrient removal upto 47%, 48% and 49% for N, P and K, respectively. Removal efficiency of teak plants grown in other experimental units decreased with increasing P and K concentrations in test solutions. The lowest nutrient removal and plant growth were recorded in units with 1:6:0.5 N:P:K ratio which received the highest ratio of P to K. The findings indicated that teak seedlings functioned effectively as phytoremediation plants for N-rich wastewater treatment when they were being supplied with proper concentrations of P and K.
    MeSH terms: Biodegradation, Environmental*; Nitrogen; Phosphorus; Plants; Urea; Waste Water*
  15. Kwiatkowski M, Hameed BH
    J Mol Model, 2017 Aug;23(8):238.
    PMID: 28735499 DOI: 10.1007/s00894-017-3402-0
    The paper presents the results of research devoted to reliability evaluation of the analysis of results of the porous structure of activated carbons based on incomplete nitrogen adsorption isotherms using the BET, t-plot, and NLDFT methods, as well as the LBET method comprising the unique numerical fast multivariant procedure of adsorption system identification. The research involved the application of the nitrogen adsorption isotherms obtained for five samples of activated carbons produced from waste materials of organic origin by way of chemical activation with potassium hydroxide, sodium hydroxide, and potassium carbonate with the use of microwave heating. The analyses performed pointed to a good correlation between the results obtained using the BET, t-plot, NLDFT, and LBET methods. Moreover, the parameters of the porous structure determined using these methods based on incomplete adsorption isotherms of nitrogen are in fact as reliable as these methods allow.
  16. Tingle J
    Br J Nurs, 2017 May 25;26(10):572-573.
    PMID: 28541112 DOI: 10.12968/bjon.2017.26.10.572
    John Tingle, Reader in Health Law at Nottingham Trent University, and Jen Minford, Junior Doctor Co-ordinator, Nottingham University Hospitals NHS Trust, discuss initiatives presented at a global summit on patient safety.
    MeSH terms: Canada; Congresses as Topic*; Health Personnel/education*; Humans; Japan; Malaysia; Risk Management*; Global Health*; World Health Organization; Checklist*; Patient Safety*
  17. Zarkasi KZ, Taylor RS, Glencross BD, Abell GCJ, Tamplin ML, Bowman JP
    Res. Microbiol., 2017 Oct;168(8):751-759.
    PMID: 28728852 DOI: 10.1016/j.resmic.2017.07.003
    In this study, microbial community dynamics were assessed within a simple in vitro model system in order to understand those changes influenced by diet. The abundance and diversity of bacteria were monitored within different treatment slurries inoculated with salmon faecal samples in order to mimic the effects of dietary variables. A total of five complete diets and two ingredients (plant meal) were tested. The total viable counts (TVCs) and sequencing data revealed that there was very clear separation between the complete diets and the plant meal treatments, suggesting a dynamic response by the allochthonous bacteria to the treatments. Automated ribosomal intergenic spacer analysis (ARISA) results showed that different diet formulations produced different patterns of fragments, with no separation between the complete diets. However, plant-based protein ingredients were clearly separated from the other treatments. 16S rRNA Illumina-based sequencing analysis showed that members of the genera Aliivibrio, Vibrio and Photobacterium became predominant for all complete diets treatments. The plant-based protein ingredient treatments only sustained weak growth of the genus Sphingomonas. In vitro based testing of diets could be a useful strategy to determine the potential impact of either complete feeds or ingredients on major fish gastrointestinal tract microbiome members.
    MeSH terms: Gastrointestinal Microbiome*; Animals; Animal Feed/analysis*; Bacteria/classification; Bacteria/genetics; Bacteria/isolation & purification*; Feces/microbiology; Salmo salar/metabolism; Salmo salar/microbiology*; Gastrointestinal Tract/metabolism; Gastrointestinal Tract/microbiology*
  18. Ibrahim RW, Nashine HK, Kamaruddin N
    Math Biosci, 2017 10;292:10-17.
    PMID: 28728968 DOI: 10.1016/j.mbs.2017.07.007
    A biological dynamic system carries engineering properties such as control systems and signal processing (or image processing) addicted to molecular biology at the level of bio-molecular communication networks. Dynamical system features and signal reply functions of cellular signaling pathways are some of the main topics in biological dynamic systems (for example the biological segmentation). In the present paper, we introduce new generalized hybrid time-space dynamical systems of growing bacteria. We impose the approximate analytic solution for the system. The generalization adapted the concepts of the Riemann-Liouville fractional operators for time and the Srivastava-Owa fractional operators for space. Moreover, we introduce a numerical perturbation method of two operators to obtain the approximate solutions. We establish the existence and uniqueness results and impose some applications in the sequel. Moreover, we study the Ulam stability and apply these stable solutions to improve the segmentation of a class of growing bacteria.
    MeSH terms: Bacteria/growth & development*; Models, Biological; Spatio-Temporal Analysis
  19. Pyke AT, Huang B, Warrilow D, Moore PR, McMahon J, Harrower B
    Genome Announc, 2017 Jul 20;5(29).
    PMID: 28729258 DOI: 10.1128/genomeA.00546-17
    In 2015, a female patient returning to Australia from Sabah, Malaysia, was diagnosed with a suspected sylvatic dengue virus type 2 (DENV-2) infection, becoming the second case of imported highly divergent dengue virus infection recorded in Australia. We describe here the complete genome sequencing of the DENV-2 strain isolated from this patient.
    MeSH terms: Australia; Dengue; Dengue Virus; Environment; Female; Humans; Malaysia
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