1
|
Elbialy NA, Elhakim HKA, Mohamed MH, Zakaria Z. Evaluation of the synergistic effect of chitosan metal ions (Cu 2+/Co 2+) in combination with antibiotics to counteract the effects on antibiotic resistant bacteria. RSC Adv 2023; 13:17978-17990. [PMID: 37323456 PMCID: PMC10265139 DOI: 10.1039/d3ra02758a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/02/2023] [Indexed: 06/17/2023] Open
Abstract
The effectiveness of antibiotics that save millions of lives is in danger due to the increasing rise of resistant bacteria around the world. We proposed chitosan-copper ions (CSNP-Cu2+) and chitosan-cobalt ion nanoparticles (CSNP-Co2+) as biodegradable nanoparticles loaded with metal ions synthesized via an ionic gelation method for treatment of antibiotic resistant bacteria. The nanoparticles were characterized using TEM, FT-IR, zeta potential and ICP-OES. The MIC was evaluated for the NPs in addition to evaluating the synergetic effect of the nanoparticles in combination with cefepime or penicillin for five different antibiotic resistant bacterial strains. In order to investigate the mode of action, MRSA, DSMZ 28766 and Escherichia coli E0157:H7 were selected for further evaluation of antibiotic resistant genes expression upon treatment with NPs. Finally, the cytotoxic activities were investigated using MCF7, HEPG2 and A549 and WI-38 cell lines. The results showed quasi spherical shape and mean particle size of 19.9 ± 5 nm, 21 ± 5 nm and 22.27 ± 5 for CSNP, CSNP-Cu2+ and CSNP-Co2+ respectively. FT-IR showed slight shifting of the hydroxyl and amine group's peaks of chitosan indicating the adsorption of metal ions. Both nanoparticles had antibacterial activity with MIC ranging between 125 and 62 μg ml-1 for the used standard bacterial strains. Moreover, the combination of each of the synthesized NP with either cefepime or penicillin not only showed a synergetic effect as antibacterial activity of each NP or antibiotics alone, but also decreased the fold of antibiotic resistance genes expression. The NPs showed potent cytotoxic activities for MCF-7, HepG2 and A549 cancer cell lines with lower cytotoxic values for the WI-38 normal cell line. The NPs' antibacterial activity may be due to penetration and rupture of the cell membrane and the outer membrane of Gram negative and Gram positive bacteria causing bacterial cell death, in addition to, penetration into the bacterial genes and blocking gene expression that is vital to bacterial growth. The fabricated nanoparticles can be an effective, affordable and biodegradable solution to challenge antibiotic resistant bacteria.
Collapse
Affiliation(s)
- Nouran A Elbialy
- Biotechnology and Bimolecular Chemistry Department, Faculty of Science, Cairo University Giza Egypt
| | - Heba K A Elhakim
- Biochemistry Division, Faculty of Science, Cairo University Giza Egypt
| | | | - Zainab Zakaria
- Research and Development Department, Faculty of Pharmacy, Heliopolis University Cairo Egypt
| |
Collapse
|
2
|
Loh ZH, Mohamad S, Gan BC, Zakaria Z, Mohamad I. Thyroid function status evaluation in patient post-radiotherapy for nasopharyngeal carcinoma: A retrospective study. Med J Malaysia 2023; 78:197-201. [PMID: 36988530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
INTRODUCTION Nasopharyngeal carcinoma (NPC) is among the most common malignancy in Malaysia. Radiationinduced hypothyroidism has been reported in other countries. However, in Malaysia, no studies were ever done to determine the effect of radiation on hypothyroidism. The objective of this study is to evaluate the practice of taking thyroid function test (TFT) and determine hypothyroidism post-radiation in patients with NPC. MATERIALS AND METHODS A retrospective study on the symptoms and results of TFT according to the dosage of intensity-modulated radiotherapy (IMRT) given to patients with NPC. Data were traced and analysed. RESULTS A total of 78 patients were identified. All patients received IMRT with 33-35 fractions of radiotherapy (RT) with total dosage of 66-70 Gray given. Not all patients had their thyroid function status measured routinely. Twelve patients did have symptoms of hypothyroidism. TFT were obtained in this group but the results were normal. No correlation was found between RT and hypothyroidism. CONCLUSION There was no correlation between IMRT and the development of hypothyroidism. A prospective study with better control of inclusion and exclusion criteria, and longer follow-up period with TFT, is needed to demonstrate the consistency of these findings.
Collapse
Affiliation(s)
- Z H Loh
- Universiti Sains Malaysia, School of Medical Sciences, Department of Otorhinolaryngology-Head & Neck Surgery, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - S Mohamad
- Universiti Sains Malaysia, School of Medical Sciences, Department of Otorhinolaryngology-Head & Neck Surgery, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - B C Gan
- Penang General Hospital, Department of Otorhinolaryngology-Head & Neck Surgery, Health Campus, Penang, Malaysia
| | - Z Zakaria
- Penang General Hospital, Department of Otorhinolaryngology-Head & Neck Surgery, Health Campus, Penang, Malaysia
| | - I Mohamad
- Universiti Sains Malaysia, School of Medical Sciences, Department of Otorhinolaryngology-Head & Neck Surgery, Health Campus, Kubang Kerian, Kelantan, Malaysia.
| |
Collapse
|
3
|
Bekbayeva L, Zakaria Z, Negim ES, Al Azzam K, Yeligbayeva G. The effect of mixed fertilizers on the vegetative growth and reproductive characteristics of tomatoes (L. esculentum Mill). ijbch 2022. [DOI: 10.26577/ijbch.2022.v15.i1.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
4
|
El Shamy AA, Zakaria Z, Tolba MM, Salah Eldin N, Rabea AT, Tawfick MM, Nasser HA. AmpC β-Lactamase Variable Expression in Common Multidrug-Resistant Nosocomial Bacterial Pathogens from a Tertiary Hospital in Cairo, Egypt. Int J Microbiol 2021; 2021:6633888. [PMID: 33854549 PMCID: PMC8021464 DOI: 10.1155/2021/6633888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 02/18/2021] [Accepted: 03/16/2021] [Indexed: 12/26/2022] Open
Abstract
The emergence of AmpC (pAmpC) β-lactamases conferring resistance to the third-generation cephalosporins has become a major clinical concern worldwide. In this study, we aimed to evaluate the expression of AmpC β-lactamase encoding gene among the pathogenic Gram-positive and Gram-negative resistant bacteria screened from clinical samples of Egyptian patients enrolled into El-Qasr El-Ainy Tertiary Hospital in Cairo, Egypt. A total of 153 bacterial isolates of the species Pseudomonas aeruginosa, Klebsiella pneumoniae, and Enterococcus faecium were isolated from patients diagnosed with urinary tract infection (UTI), respiratory tract infection (RTI), and wound infections. The total number of E. faecium isolates was 53, comprising 29 urine isolates, 5 sputum isolates, and 19 wound swab isolates, whereas the total number of P. aeruginosa isolates was 49, comprising 27 urine isolates, 7 sputum isolates, and 15 wound swab isolates, and that of the K. pneumoniae isolates was 51, comprising 20 urine isolates, 25 sputum isolates, and 6 wound swab isolates. Our results indicated that there is no significant difference in the expression of AmpC β-lactamase gene among the tested bacterial species with respect to the type of infection and/or clinical specimen. However, the expression patterns of AmpC β-lactamase gene markedly differed according to the antibacterial resistance characteristics of the tested isolates.
Collapse
Affiliation(s)
- Aliaa Ali El Shamy
- Microbiology and Immunology Department, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| | - Zainab Zakaria
- Biomedical Research Lab, Research and Development Department, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| | - Mahmoud M. Tolba
- Pharmaceutical Division, Ministry of Health and Population, Faiyum, Egypt
| | - Nermeen Salah Eldin
- Microbiology and Immunology Department, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| | - Al-Taher Rabea
- Biomedical Research Lab, Research and Development Department, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| | - Mahmoud M. Tawfick
- Microbiology and Immunology Department, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
- Microbiology and Immunology Department, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Hebatallah A. Nasser
- Microbiology and Immunology Department, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| |
Collapse
|
5
|
Zakaria Z, Aziz MA, Ishak N, Suppiah S, Bradley D, Noor NM. Advanced thermoluminescence dosimetric characterization of fabricated Ge-Doped optical fibres (FGDOFs) for electron beams dosimetry. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2019.108487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
6
|
Zakaria Z, Bekbayeva L, Negim E. Effects of blended polyvinyl alcohol/urea on the growth, yield and chemical content of tomato (Lycopersicon esculentum L. Mill). ijbch 2020. [DOI: 10.26577/ijbch.2020.v13.i2.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
7
|
Zakaria Z, Alahnomi RA, Mohd Yussof Z, Alhegazi A, Mohd Bahar AA, Abd Rahman N. Contracted Microwave T-resonator for Permittivity Sensing Applications. 2019 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE) 2019. [DOI: 10.1109/apace47377.2019.9021062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
8
|
El-Sayed ESR, Abdelhakim HK, Zakaria Z. Extracellular biosynthesis of cobalt ferrite nanoparticles by Monascus purpureus and their antioxidant, anticancer and antimicrobial activities: Yield enhancement by gamma irradiation. Mater Sci Eng C Mater Biol Appl 2019; 107:110318. [PMID: 31761250 DOI: 10.1016/j.msec.2019.110318] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 09/28/2019] [Accepted: 10/14/2019] [Indexed: 12/20/2022]
Abstract
Cobalt ferrite nanoparticles were successfully synthesized using the fungus Monascus purpureus ATCC16436 as a potentially low-cost, eco-friendly and easy to produce method. Fourier transform infrared spectroscopy confirmed the functional groups present in the prepared samples. X-ray diffraction pattern of the synthesized nanoparticles revealed a single-phase crystalline structure. Transmission electron microscope studies showed the spherical shape with a mean particle size of 6.50 nm. Vibrating sample magnetometer analyses revealed that the synthesized nanoparticles have a superparamagnetic behavior. In addition, the antioxidant, anticancer and antimicrobial activities of the synthesized nanoparticles were evaluated. The synthesized nanoparticles exhibited antioxidant potential as compared by ascorbic acid with 50% inhibitory concentration of 100.25 μg mL-1. Based on the MTT assay, the synthesized nanoparticles significantly inhibited the proliferation of two different human cancer cell lines (breast and liver) and normal human melanocytes. The recorded 50% inhibitory concentrations of the respective cell lines were 45.21, 61.86 and 200.15 μg mL-1. The synthesized nanoparticles showed potent antibacterial and antifungal activities against all the tested plant and human microbial pathogens with minimal inhibitory concentration range 250-500 μg mL-1. Moreover, the feasibility of production enhancement of the synthesized nanoparticles using the fungal culture as affected by gamma irradiation was also adopted. Gamma irradiation at 1000 Gy dramatically intensified the yield of nanoparticles to 24.87 g L-1. Accordingly, these findings suggest a new and alternate approach with the excellent biotechnological potentiality for the nanoparticles production that will open up the way for the industrial manufacture of nanomaterials.
Collapse
Affiliation(s)
- El-Sayed R El-Sayed
- Plant Research Department, Nuclear Research Center, Atomic Energy Authority, Cairo, Egypt.
| | - Heba K Abdelhakim
- Biochemistry Lab, Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Zainab Zakaria
- Biomedical Research Lab, Faculty of Pharmacy, Heliopolis University for Sustainable Development, Cairo, Egypt
| |
Collapse
|
9
|
|
10
|
Zakaria Z, Mohamad M, Noh Abd Majid M, Ulfa Abdul Aziz N, Mat Rashid K. The Mediating Effect of Job Satisfaction on Employee Loyalty: A Case Study of a Developer Company in Malaysia. KSS 2019; 3:1018. [DOI: 10.18502/kss.v3i13.4264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
11
|
Zakaria Z, Kamarudin SK, Timmiati SN. Influence of Graphene Oxide on the Ethanol Permeability and Ionic Conductivity of QPVA-Based Membrane in Passive Alkaline Direct Ethanol Fuel Cells. Nanoscale Res Lett 2019; 14:28. [PMID: 30659414 PMCID: PMC6338673 DOI: 10.1186/s11671-018-2836-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 12/13/2018] [Indexed: 05/31/2023]
Abstract
Passive alkaline-direct ethanol fuel cells (alkaline-DEFCs) appear to be suitable for producing sustainable energy for portable devices. However, ethanol crossover is a major challenge for passive alkaline-DEFC systems. This study investigated the performance of a crosslinked quaternized poly (vinyl alcohol)/graphene oxide (QPVA/GO) composite membrane to reduce ethanol permeability, leading in enhancement of passive alkaline-DEFC performance. The chemical and physical structure, morphology, ethanol uptake and permeability, ion exchange capacity, water uptake, and ionic conductivity of the composite membranes were characterized and measured to evaluate their applicability in fuel cells. The transport properties of the membrane were affected by GO loading, with an optimal loading of 15 wt.% and doped with 1 M of KOH showing the lowest ethanol permeability (1.49 × 10-7 cm2 s-1 and 3.65 × 10-7 cm2 s-1 at 30 °C and 60 °C, respectively) and the highest ionic conductivity (1.74 × 10-2 S cm-1 and 6.24 × 10-2 S cm-1 at 30 °C and 60 °C, respectively). In the passive alkaline-DEFCs, the maximum power density was 9.1 mW cm-2, which is higher than commercial Nafion 117/KOH (7.68 mW cm-2) at 30 °C with a 2 M ethanol + 2 M KOH solution. For the 60 °C, the maximum power density of composite membrane achieved was 11.4 mW cm-2.
Collapse
Affiliation(s)
- Z. Zakaria
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Malaysia
| | - S. K. Kamarudin
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Malaysia
- Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Malaysia
| | - S. N. Timmiati
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Malaysia
| |
Collapse
|
12
|
Zakaria Z, Kamarudin SK. Performance of quaternized poly(vinyl alcohol)‐based electrolyte membrane in passive alkaline DEFCs application: RSM optimization approach. J Appl Polym Sci 2019. [DOI: 10.1002/app.47526] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Z. Zakaria
- Fuel Cell InstituteUniversiti Kebangsaan Malaysia (UKM) 43600 Bangi Selangor Malaysia
| | - S. K. Kamarudin
- Fuel Cell InstituteUniversiti Kebangsaan Malaysia (UKM) 43600 Bangi Selangor Malaysia
- Department of Chemical and Process Engineering, Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia (UKM) 43600 Bangi Selangor Malaysia
| |
Collapse
|
13
|
Abd Aziz M, Zakaria Z, Ibrahim M, Idroas M. Imaging of pipeline irregularities using a PIG system based on reflection mode ultrasonic sensors. IJOGCT 2019; 20:212. [DOI: 10.1504/ijogct.2019.10018663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
14
|
Inelova Z, Nesterova S, Zakaria Z, Zaparina Y, Sayakhmet A. Systematic analysis of flora of Atyrau city. ijbch 2019. [DOI: 10.26577/ijbch-2019-v2-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
15
|
Inelova Z, Nesterova S, Zakaria Z, Zaparina Y, Sayakhmet A. Systematic analysis of flora of Atyrau city. Int j biol chem 2019. [DOI: 10.26577/ijbch-2019-i2-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
16
|
Hamad M, Rahhal A, Dayyih WA, Mallah E, Dayyih AA, Zakaria Z, Arafat T. Development and Validation of Liquid Chromatography Method for Determination of Glimepiride in Presence of (Vimto ®) Soft Drinks in Rats: Application to Pharmacokinetics Studies. J Pharm Bioallied Sci 2019; 11:49-59. [PMID: 30906140 PMCID: PMC6394163 DOI: 10.4103/jpbs.jpbs_200_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
CONTEXT Diet and beverages are thought to have notable effects on drugs. Recently, this relationship has received significant consideration. AIMS To develop and validate a simple, rapid, and sensitive method for the determination of glimepiride in rat serum. This will be performed using high-performance liquid chromatography-mass spectrometry (HPLC-MS/MS). Potential pharmacokinetic interactions between glimepiride and the soft drink, Vimto, will also be investigated in the serum of experimental rats. MATERIALS AND METHODS HPLC-MS/MS was constructed and clarithromycin was used as an internal standard. RESULTS The method was validated in terms of linearity, precision, accuracy, stability, and system suitability parameters. The method was found to be satisfactory and suitable for the determination of glimepiride. The precision of glimepiride was high (coefficient of variation, CV% <15%), the accuracy over all 3 days of validation was within the accepted criteria. Glimepiride peak serum concentration (C max) was 126.01 ng/mL and was reached within 1 h (T max) of administration. Mean area under curve (AUC) was 964.70 ng/mL and was reached within 24 h of administration. The Vimto soft drink significantly (P < 0.050) reduced glimepiride peak serum concentration to 57.87 ng/mL and was reached within 2 h of administration. AUC was significantly reduced to 335.04 ng*h/mL (P < 0.050). CONCLUSION Glimepiride pharmacokinetic parameters such as C max and AUC were significantly affected by the Vimto soft drink. Therefore, this study developed a simple, rapid, and sensitive method for validation and determination of the effects of soft drinks on drugs using the LC-MS/MS method.
Collapse
Affiliation(s)
- Mohammed Hamad
- Department of Basic Sciences, College of Science and Health Professions, King Saud bin Abdulaziz University for Health Sciences, Jeddah, Kingdom of Saudi Arabia
| | - Areej Rahhal
- Department of Pharmaceutical Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Wael Abu Dayyih
- Department of Pharmaceutical Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Eyad Mallah
- Department of Pharmaceutical Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Alice Abu Dayyih
- School of Chemistry, Biology and Pharmacy, Bio- and Pharmaceutical Analysis Department Hochschule Fresenius University of Applied Sciences, Idstein, Germany
| | - Zainab Zakaria
- Department of Pharmaceutical Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Tawfiq Arafat
- Department of Pharmaceutical Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| |
Collapse
|
17
|
Idroas M, Aziz MA, Zakaria Z, Ibrahim M. Imaging of pipeline irregularities using a PIG system based on reflection mode ultrasonic sensors. IJOGCT 2019; 20:212. [DOI: 10.1504/ijogct.2019.097449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
18
|
Nornikman H, Ahmad BH, Zakaria Z, Abd Aziz MZA, Ismail MK, Siang CS. Tri-polarized Patch Antenna with X-Shaped Element for Wireless LAN MIMO System. 2018 IEEE International RF and Microwave Conference (RFM) 2018. [DOI: 10.1109/rfm.2018.8846472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
19
|
Hashem M, Zaghla H, Zakaria Z, Allam WR, Sameea EA, Mikhail NN, Sobhy M, Galal IF, Mokhtar Y, Hamdy S, Galal G, Abdelwahab SF, Waked I. High spontaneous clearance of symptomatic iatrogenic acute hepatitis C genotype 4 infection. J Med Virol 2018; 90:1841-1847. [PMID: 30011346 DOI: 10.1002/jmv.25270] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 06/18/2018] [Indexed: 02/05/2023]
Abstract
Acute hepatitis C (AHC) infection resolves spontaneously in 15% to 40% of patients. Factors favoring spontaneous viral clearance remain undefined. In this study, predictors of spontaneous viral clearance in patients with symptomatic AHC were investigated. Epidemiological, clinical, and virologic parameters were also examined. Patients with symptomatic AHC were enrolled and followed up prospectively. The patients were followed up every 2 weeks in the first month and then monthly for the following 5 months, with a follow-up visit 6 months after the last hepatitis C virus (HCV)-RNA negative sample for those who had cleared the virus. Interleukin (IL)-28B.rs12979860 single-nucleotide polymorphism and HCV genotype were tested at baseline. HCV-RNA was tested during each visit. Patients who remained RNA-positive at 24 weeks were treated with pegylated interferon plus ribavirin for 24 weeks. A total of 30 patients, mostly with iatrogenically acquired AHC genotype 4 infections completed 6-months' follow-up, to either spontaneous clearance or start of treatment. The mean age of the patients was 37 ± 13 years. In total, 67% of patients were females, and the mean incubation period was 7.6 ± 3.5 weeks. Viral clearance occurred spontaneously in 19 (63.3%) patients. The average time to clearance was 24.3 ± 9.6 weeks. A total of 11 patients received therapy, and 8 (72.7%) cleared the virus and had a sustained virologic response to the treatment 24 weeks after the therapy. A total of three patients were treatment nonresponders. IL28B.rs12979860 CC genotype, female gender, and viremia level were not associated with self-limiting AHC in this cohort. In conclusion, patients with symptomatic AHC genotype 4 infection caused by an iatrogenic exposure had higher rates of spontaneous resolution than previously reported. Predicting spontaneous viral clearance after iatrogenic AHC exposure was not possible in this population.
Collapse
Affiliation(s)
- Mohamed Hashem
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Hassan Zaghla
- Department of Hepatology, National Liver Institute, Menoufia University, Shebeen El-Kom, Menoufia, Egypt
| | - Zainab Zakaria
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
| | - Walaa R Allam
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
| | - Eman Abdel Sameea
- Department of Hepatology, National Liver Institute, Menoufia University, Shebeen El-Kom, Menoufia, Egypt
| | - Nabiel N Mikhail
- Department of Biostatistics and Cancer Epidemiology, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
| | - Maha Sobhy
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
| | - Iman F Galal
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
| | - Yasser Mokhtar
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
| | - Shimaa Hamdy
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
| | - Gehan Galal
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
| | - Sayed F Abdelwahab
- R&D Department, Egyptian Company for Blood Transfusion Services (EgyBlood), VACSERA, Giza, Egypt
- Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt
| | - Imam Waked
- Department of Hepatology, National Liver Institute, Menoufia University, Shebeen El-Kom, Menoufia, Egypt
| |
Collapse
|
20
|
Nornikman H, Ahmad BH, Zakaria Z, S Ramlee NE, Abd Aziz MZA, Ismail MK. Multiband Minkowski Fractal Patch Antenna with Rhombic SRR for Wireless LAN and WiMAX Applications. 2018 IEEE International RF and Microwave Conference (RFM) 2018. [DOI: 10.1109/rfm.2018.8846542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
21
|
Hambali IU, Abdullah FFJB, Bhutto KR, Mohd Azmi ML, Wahid AH, Zakaria Z, Odhah MN, Arsalan M, Muhammad NA, Jefri MN. Periodic vicissitudes of different concentrations of a developed prototype killed S. aureus mastitis vaccine on immune modulators, mediators and immunoglobulins in cows. Trop Anim Health Prod 2018; 51:781-789. [PMID: 30449009 DOI: 10.1007/s11250-018-1755-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/11/2018] [Indexed: 11/24/2022]
Abstract
Mastitis is the inflammation of the mammary gland due to microbial infiltration causing a reduced mammary function. This study aims at developing a vaccine using Malaysian local isolate of Staphylococcus aureus and evaluating serum amyloid A, Interleukin-10, IgM and IgG responses periodically. Four bacterin concentrations (106, 107, 108 and 109 cfu/ml of the local isolate of S. aureus) were adjuvanted with aluminium potassium sulphate. Thirty cows grouped into 4 treatment groups (G-) were vaccinated (2 ml) intramuscularly, with a fifth G-A as control. The mean concentration (MC) of serum amyloid A (SAA) was significantly different (sig-d) (p ˂ 0.05) in G-D at 0 h post vaccination (PV), 3 h PV, 24 h PV, weeks 1, 2, 3 and 4 PV (6-, 15-, 5-, 12-, 11-, 4- and 11-fold increased (FI) respectively). The MC of serum amyloid A was also sig-d in G-E at 0 h PV, weeks 1, 2 and 4 PV (3, 8, 5 and 8 FI respectively). The MC of IL-10 was sig-d in G-D and C at 3 h PV and week 2 PV (5 and 2 FI respectively). The IgM MC was sig-d in G-B and C at 3 h PV (5 and 6 FI respectively), at 24 h PV (5 and 9 FI respectively), at week 3 PV(2 and 2 FI respectively) and week 4 PV (3 and 4 FI respectively). The MC of IgG was sig-d in G-E at 0 h, 3 h and week 3 PV(5, 6 and 2 FI respectively) and in G-D at weeks 1-4 (3, 3, 3 and 5 FI respectively). In conclusion, elevated levels of SAA, IgG and IL-10 in G-D(108) informed our choice of best dosage which can be used to evoke immunity in cows.
Collapse
Affiliation(s)
- Idris Umar Hambali
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. .,Department of Veterinary Public health and Preventive Medicine, University of Maiduguri, Maiduguri, 600233, Nigeria.
| | - Faez Firdaus Jesse Bin Abdullah
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. .,Research Centre for Ruminant Disease, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. .,Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - K R Bhutto
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Directorate of Veterinary Research and Diagnosis, Livestock and Fisheries Department, Sindh, 70050, Pakistan
| | - M L Mohd Azmi
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - A H Wahid
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Z Zakaria
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - M N Odhah
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Department of Veterinary Medicine, Faculty of Agriculture and Veterinary Medicine, Thamar University, 39, Dhamar, Yemen
| | - M Arsalan
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Directorate of Animal Health, Livestock and Dairy Development Department Baluchistan, Lahore, 87300, Pakistan
| | - N A Muhammad
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Department of Clinical Medicine and Surgery, University of Veterinary and Animal Science Lahore, Lahore, 54500, Pakistan
| | - M N Jefri
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| |
Collapse
|
22
|
Yusuf A, Rahman A, Zakaria Z, Wahab Z, Kumar S. Assessment of variability pattern of flesh color in ‘Harumanis’ mango (Mangifera indica L.) from diverse Perlis geographical origin. Food Res 2018. [DOI: 10.26656/fr.2017.2(6).108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
23
|
Zakaria Z, Kamarudin SK, Timmiati SN, Masdar MS. New composite membrane poly(vinyl alcohol)/graphene oxide for direct ethanol-proton exchange membrane fuel cell. J Appl Polym Sci 2018. [DOI: 10.1002/app.46928] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Z. Zakaria
- Fuel Cell Institute; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Malaysia
| | - S. K. Kamarudin
- Fuel Cell Institute; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Malaysia
- Department of Chemical and Process Engineering; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Malaysia
| | - S. N. Timmiati
- Fuel Cell Institute; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Malaysia
| | - M. S. Masdar
- Fuel Cell Institute; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Malaysia
- Department of Chemical and Process Engineering; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Malaysia
| |
Collapse
|
24
|
Hambali IU, Bhutto KR, Jesse FFA, Lawan A, Odhah MN, Wahid AH, Azmi MLM, Zakaria Z, Arsalan M, Muhammad NA, Jefri MN. Clinical responses in cows vaccinated with a developed prototype killed Staphylococcus aureus mastitis vaccine. Microb Pathog 2018; 124:101-105. [PMID: 30114463 DOI: 10.1016/j.micpath.2018.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 08/08/2018] [Accepted: 08/13/2018] [Indexed: 11/30/2022]
Abstract
Mastitis is an inflammatory condition of the udder that occurs as a result of the release of leucocytes into the udder in a response to bacterial invasion. The major causes of mastitis are an array of gram positive and negative bacteria, however, algae, virus, fungi, mechanical or thermal injury to the gland have also been identified as possible causes. Mastitis vaccines are yet to be developed using Malaysian local isolate of bacteria. The objective of the present experimental trial was to develop a monovalent vaccine against mastitis using S. aureus of Malaysian isolate and to evaluate the clinical responses such as temperature, respiratory rates and heart rates in vaccinated cows. S. aureus is a major causative bacteria in clinical and subclinical types of mastitis in cows. Four concentrations of the bacterin (106, 107, 108 and 109 cfu/ml of the local isolate of S. aureus) were prepared using Aluminium potassium sulfate adjuvant. Thirty cows were grouped into four treatment groups (B, C, D and E) with a fifth group as control (A). These groups were vaccinated intramuscularly(IM) with the prepared monovalent vaccine and its influence on the vital signs were intermittently measured. The mean of rectal temperature was significantly different (p˂ 0.05) at 0hr Post Vaccination [1]" in groups D and E (39.5 ± 0.15 °C and 39.4 ± 0.15 °C respectively) and at 3 h PV in groups C, D and E (39.8 ± 0.14 °C, 39.9 ± 0.14 °C and 40.3 ± 0.14 °C respectively) compared to the control group. This indicated a sharp increased rectal temperatures between 0hr and 3 h PV in groups C, D and E which later declined at 24 h PV. The mean of rectal temperature of group E was significantly different (p˂ 0.05) at weeks 1 and 2 PV (39.87 ± 0.19 °C and 39.80 ± 0.18 °C respectively) compared to the control group. The mean of heart rate was significantly different (p˂ 0.05) at week 1 PV in groups D and E (83.0 ± 3.8 beats/minute and 80.0 ± 3.8 °C respectively) compared to control. A trending decrease was however observed in heart rates of group E from weeks through 4 PV and in group D from weeks 1 through 3 PV. The mean of respiratory rates was significantly different (p˂ 0.05) at week 3 PV in group B and D (31.0 ± 1.2 breaths/minute and 28.0 ± 1.2 breaths/minute) compared to control. In conclusion, this study highlights responses of these vital signs due to vaccination against S. aureus causing mastitis in cows. To the best of our knowledge the findings of this study adds value to the shallow literature on vital signs alterations in cows vaccinated against mastitis as elevated levels of temperature and heart rates of group D and E indicated obvious response.
Collapse
Affiliation(s)
- I U Hambali
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Veterinary Public health and Preventive Medicine, University of Maiduguri, 600233, Nigeria.
| | - K R Bhutto
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Directorate of Veterinary Research and Diagnosis, Livestock and Fisheries Department, 70050, Sindh, Pakistan
| | - F F A Jesse
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Research Centre for Ruminant Disease, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - A Lawan
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Maiduguri, 600233, Nigeria
| | - M N Odhah
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Veterinary Medicine, Faculty of Agriculture and Veterinary Medicine, Thamar University, 39, Yemen
| | - A H Wahid
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - M L Mohd Azmi
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Z Zakaria
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - M Arsalan
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Directorate of Animal Health, Livestock and Dairy Development Department Baluchistan, 87300, Pakistan
| | - N A Muhammad
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Clinical Medicine and Surgery, University of Veterinary and Animal Science Lahore, 54500, Pakistan
| | - M N Jefri
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| |
Collapse
|
25
|
Bahar AAM, Zakaria Z, Isa AAM, Alahnomi RA, Rahman NA. Complex Permittivity Measurement Based on Planar Microfluidic Resonator Sensor. 2018 18th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) 2018. [DOI: 10.1109/antem.2018.8572934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
26
|
Hussain M, Zakaria Z, Rizman Z, Yasin M. Power loss estimation due to difference transformer tap changer position at interface. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i3s.53] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
27
|
Mohd Abd Majid H, Ahmad Sharif S, Sulong S, Omar M, Syed Yassin S, Raju R, Zakaria Z, Zakaria F. Small and Medium Enterprises (SMEs) future development: a comprehensive review on customer retention programme in retaining customer loyalty. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i5s.70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
28
|
Zakaria Z, Abdul Majid M, Ahmad Z, Jusoh Z, Zakaria N. Influence of Halal certification on customers’ purchase intention. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i5s.55] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
29
|
Shahidan N, Salleh N, Zakaria Z, Rois Anwar N. Glycemic index of chocolate fortified with pumpkin (<i>Cucurbita moshata</i>) and taro (<i>Colocasia esculenta</i>) powder and its effect on mood and cognitive functions of female students. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i2s.57] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
30
|
Fuad A, Anwar N, Zakaria A, Shahidan N, Zakaria Z. Physicochemical characteristics of Malaysian honeys influenced by storage time and temperature. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i2s.52] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
31
|
|
32
|
Alahnomi RA, Zakaria Z, Ruslan E, Ab Rashid SR, Mohd Bahar AA, Shaaban A. Microwave bio-sensor based on symmetrical split ring resonator with spurline filters for therapeutic goods detection. PLoS One 2017; 12:e0185122. [PMID: 28934301 PMCID: PMC5608324 DOI: 10.1371/journal.pone.0185122] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 09/06/2017] [Indexed: 11/24/2022] Open
Abstract
A novel symmetrical split ring resonator (SSRR) based microwave sensor with spurline filters for detecting and characterizing the properties of solid materials has been developed. Due to the weak perturbation in the interaction of material under test (MUT) and planar microwave sensor, spurline filters were embedded to the SSRR microwave sensor which effectively enhanced Q-factor with suppressing the undesired harmonic frequency. The spurline filter structures force the presented sensor to resonate at a fundamental frequency of 2.2 GHz with the capabilities of suppressing rejected harmonic frequency and miniaturization in circuit size. A wide bandwidth rejection is achieved by using double spurlines filters with high Q-factor achievement (up to 652.94) compared to single spurline filter. The new SSRR sensor with spurline filters displayed desired properties such as high sensitivity, accuracy, and performance with a 1.3% typical percentage error in the measurement results. Furthermore, the sensor has been successfully applied for detecting and characterizing solid materials (such as Roger 5880, Roger 4350, and FR4) and evidently demonstrated that it can suppress the harmonic frequency effectively. This novel design with harmonic suppression is useful for various applications such as food industry (meat, fruit, vegetables), biological medicine (derived from proteins and other substances produced by the body), and Therapeutic goods (antiseptics, vitamins, anti-psychotics, and other medicines).
Collapse
Affiliation(s)
- Rammah A. Alahnomi
- Center for Telecommunication Research and Innovation (CeTRI), Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Durian Tunggal, Melaka, Malaysia
- * E-mail: (RA); (ZZ)
| | - Z. Zakaria
- Center for Telecommunication Research and Innovation (CeTRI), Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Durian Tunggal, Melaka, Malaysia
- * E-mail: (RA); (ZZ)
| | - E. Ruslan
- Faculty of Technology Engineering (FTK), Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Durian Tunggal, Melaka, Malaysia
| | - S. R. Ab Rashid
- Center for Telecommunication Research and Innovation (CeTRI), Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Durian Tunggal, Melaka, Malaysia
| | - Amyrul Azuan Mohd Bahar
- Center for Telecommunication Research and Innovation (CeTRI), Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Durian Tunggal, Melaka, Malaysia
| | - Azizah Shaaban
- Department of Engineering Materials, Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Durian Tunggal, Melaka, Malaysia
| |
Collapse
|
33
|
Ali EZ, Yakob Y, Md Desa N, Ishak T, Zakaria Z, Ngu LK, Keng WT. Molecular analysis of fragile X syndrome (FXS) among Malaysian patients with developmental disability. Malays J Pathol 2017; 39:99-106. [PMID: 28866690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fragile X syndrome (FXS) is a neurodevelopmental disorder commonly found worldwide, caused by the silencing of fragile X mental retardation 1 (FMR1) gene on the X-chromosome. Most of the patients lost FMR1 function due to an expansion of cytosine-guanine-guanine (CGG) repeat at the 5' untranslated region (5'UTR) of the gene. The purpose of this study is to identify the prevalence of FXS and characterize the FMR1 gene CGG repeats distribution among children with developmental disability in Malaysia. Genomic DNA of 2201 samples from different ethnicities (Malays, Chinese, Indian and others) of both genders were PCR-amplified from peripheral blood leukocytes based on specific primers at 5'UTR of FMR1 gene. Full mutations and mosaics were successfully identified by triple methylation specific PCR (ms-PCR) and subsequently verified with FragilEase kit. The findings revealed for the first time the prevalence of FXS full mutation in children with developmental disability in Malaysia was 3.5%, a slightly higher figure as compared to other countries. Molecular investigation also identified 0.2% and 0.4% probands have permutation and intermediate alleles, respectively. The CGG repeats length observation showed 95% of patients had normal alleles within 11 to 44 CGG repeats; with 29 repeats found most common among Malays and Indians while 28 repeats were most common among Chinese. In conclusion, this is the first report of prevalence and characterisation of CGG repeats that reflects genetic variability among Malaysian ethnic grouping.
Collapse
Affiliation(s)
- E Z Ali
- Institute for Medical Research, Specialised Diagnostic Centre, Molecular Diagnostics and Protein Unit, 50588 Jalan Pahang, Kuala Lumpur, Malaysia.
| | | | | | | | | | | | | |
Collapse
|
34
|
Shuib S, Saaid NN, Zakaria Z, Ismail J, Abdul Latiff Z. Duplication 17p11.2 (Potocki-Lupski Syndrome) in a child with developmental delay. Malays J Pathol 2017; 39:77-81. [PMID: 28413209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Potocki-Lupski syndrome (PTLS), also known as duplication 17p11.2 syndrome, trisomy 17p11.2 or dup(17)(p11.2p11.2) syndrome, is a developmental disorder and a rare contiguous gene syndrome affecting 1 in 20,000 live births. Among the key features of such patients are autism spectrum disorder, learning disabilities, developmental delay, attention-deficit disorder, infantile hypotonia and cardiovascular abnormalities. Previous studies using microarray identified variations in the size and extent of the duplicated region of chromosome 17p11.2. However, there are a few genes which are considered as candidates for PTLS which include RAI1, SREBF1, DRG2, LLGL1, SHMT1 and ZFP179. In this report, we investigated a case of a 3-year-old girl who has developmental delay. Her chromosome analysis showed a normal karyotype (46,XX). Analysis using array CGH (4X44 K, Agilent USA) identified an ~4.2 Mb de novo duplication in chromosome 17p11.2. The result was confirmed by fluorescence in situ hybridization (FISH) using probes in the critical PTLS region. This report demonstrates the importance of microarray and FISH in the diagnosis of PTLS.
Collapse
Affiliation(s)
- S Shuib
- Universiti Kebangsaan Malaysia Medical Centre (UKMMC), Department of Pathology, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000 Kuala Lumpur, Malaysia.
| | | | | | | | | |
Collapse
|
35
|
Zak J, Vives V, Szumska D, Vernet A, Schneider JE, Miller P, Slee EA, Joss S, Lacassie Y, Chen E, Escobar LF, Tucker M, Aylsworth AS, Dubbs HA, Collins AT, Andrieux J, Dieux-Coeslier A, Haberlandt E, Kotzot D, Scott DA, Parker MJ, Zakaria Z, Choy YS, Wieczorek D, Innes AM, Jun KR, Zinner S, Prin F, Lygate CA, Pretorius P, Rosenfeld JA, Mohun TJ, Lu X. ASPP2 deficiency causes features of 1q41q42 microdeletion syndrome. Cell Death Differ 2016; 23:1973-1984. [PMID: 27447114 PMCID: PMC5136487 DOI: 10.1038/cdd.2016.76] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/09/2016] [Accepted: 06/13/2016] [Indexed: 11/09/2022] Open
Abstract
Chromosomal abnormalities are implicated in a substantial number of human developmental syndromes, but for many such disorders little is known about the causative genes. The recently described 1q41q42 microdeletion syndrome is characterized by characteristic dysmorphic features, intellectual disability and brain morphological abnormalities, but the precise genetic basis for these abnormalities remains unknown. Here, our detailed analysis of the genetic abnormalities of 1q41q42 microdeletion cases identified TP53BP2, which encodes apoptosis-stimulating protein of p53 2 (ASPP2), as a candidate gene for brain abnormalities. Consistent with this, Trp53bp2-deficient mice show dilation of lateral ventricles resembling the phenotype of 1q41q42 microdeletion patients. Trp53bp2 deficiency causes 100% neonatal lethality in the C57BL/6 background associated with a high incidence of neural tube defects and a range of developmental abnormalities such as congenital heart defects, coloboma, microphthalmia, urogenital and craniofacial abnormalities. Interestingly, abnormalities show a high degree of overlap with 1q41q42 microdeletion-associated abnormalities. These findings identify TP53BP2 as a strong candidate causative gene for central nervous system (CNS) defects in 1q41q42 microdeletion syndrome, and open new avenues for investigation of the mechanisms underlying CNS abnormalities.
Collapse
Affiliation(s)
- J Zak
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7DQ, UK
| | - V Vives
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7DQ, UK
| | - D Szumska
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 7BN, UK
| | - A Vernet
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 7BN, UK
| | - J E Schneider
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 7BN, UK
| | - P Miller
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7DQ, UK
| | - E A Slee
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7DQ, UK
| | - S Joss
- Queen Elizabeth University Hospital Glasgow, Glasgow G51 4TF, UK
| | - Y Lacassie
- Department of Pediatrics, Louisiana State University, New Orleans, LA 70118, USA
- Genetics Services, Children's Hospital New Orleans, New Orleans, LA 70118, USA
| | - E Chen
- Kaiser Permanente, San Francisco Medical Center, San Francisco, CA 94115, USA
| | - L F Escobar
- St Vincent Children's Hospital, Indianapolis, IN 46260, USA
| | - M Tucker
- St Vincent Children's Hospital, Indianapolis, IN 46260, USA
| | - A S Aylsworth
- Departments of Pediatrics and Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - H A Dubbs
- Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - A T Collins
- Seattle Children's Hospital, Seattle, WA 98105, USA
| | - J Andrieux
- Institute of Medical Genetics, Jeanne de Flandre Hospital, CHRU de Lille, Lille 59000, France
| | | | - E Haberlandt
- Clinical Department of Pediatrics, Innsbruck Medical University, Innsbruck A-6020, Austria
| | - D Kotzot
- Division of Human Genetics, Department of Medical Genetics, Molecular and Clinical Pharmacology, Innsbruck Medical University, Innsbruck A-6020, Austria
| | - D A Scott
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - M J Parker
- Sheffield Children's Hospital NHS Foundation Trust, Western Bank, Sheffield, S10 2TH, UK
| | - Z Zakaria
- Institute for Medical Research, Kuala Lumpur, Jalan Pahang 50588, Malaysia
| | - Y S Choy
- Prince Court Medical Centre, Kuala Lumpur 50450, Malaysia
| | - D Wieczorek
- Institute of Human Genetics, University Clinic Essen, Duisburg-Essen University, Essen 45122, Germany
- Institute of Human Genetics, University Clinic, Heinrich-Heine University, Düsseldorf 40225, Germany
| | - A M Innes
- Department of Medical Genetics and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada T3B 6A8
| | - K R Jun
- Department of Laboratory Medicine, Haeundae Paik Hospital, Inje University, Haeundae-gu, Busan, Korea
| | - S Zinner
- Seattle Children's Hospital, Seattle, WA 98105, USA
| | - F Prin
- The Francis Crick Institute Mill Hill Laboratory, London NW7 1AA, UK
| | - C A Lygate
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 7BN, UK
| | - P Pretorius
- Department of Neuroradiology, John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Oxford OX3 9DU, UK
| | - J A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - T J Mohun
- The Francis Crick Institute Mill Hill Laboratory, London NW7 1AA, UK
| | - X Lu
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7DQ, UK
| |
Collapse
|
36
|
Mamidi MK, Das AK, Zakaria Z, Bhonde R. Mesenchymal stromal cells for cartilage repair in osteoarthritis. Osteoarthritis Cartilage 2016; 24:1307-16. [PMID: 26973328 DOI: 10.1016/j.joca.2016.03.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 02/09/2016] [Accepted: 03/03/2016] [Indexed: 02/08/2023]
Abstract
Treatment for articular cartilage damage is quite challenging as it shows limited repair and regeneration following injury. Non-operative and classical surgical techniques are inefficient in restoring normal anatomy and function of cartilage in osteoarthritis (OA). Thus, investigating new and effective strategies for OA are necessary to establish feasible therapeutic solutions. The emergence of the new discipline of regenerative medicine, having cell-based therapy as its primary focus, may enable us to achieve repair and restore the damaged articular cartilage. This review describes progress and development of employing mesenchymal stromal cell (MSC)-based therapy as a promising alternative for OA treatment. The objective of this review is to first, discuss how in vitro MSC chondrogenic differentiation mimics in vivo embryonic cartilage development, secondly, to describe various chondrogenic differentiation strategies followed by pre-clinical and clinical studies demonstrating their feasibility and efficacy. However, several challenges need to be tackled before this research can be translated to the clinics. In particular, better understanding of the post-transplanted cell behaviour and learning to enhance their potency in the disease microenvironment is essential. Final objective is to underscore the importance of isolation, storage, cell shipment, route of administration, optimum dosage and control batch to batch variations to realise the full potential of MSCs in OA clinical trials.
Collapse
Affiliation(s)
- M K Mamidi
- School of Regenerative Medicine, Manipal University, Bangalore 560065, India
| | - A K Das
- Department of Surgery, Taylor's University School of Medicine, Sungai Buloh Hospital, Selangor, Malaysia
| | - Z Zakaria
- Hematology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, 50588 Kuala Lumpur, Malaysia
| | - R Bhonde
- School of Regenerative Medicine, Manipal University, Bangalore 560065, India.
| |
Collapse
|
37
|
Wong YP, Abdul Raub SH, Mohd Dali AZH, Kassim F, Visvalingam V, Zakaria Z, Kamaluddin MA, Noor Akmal S. P16INK4a: a potential diagnostic adjunct for prediction of high-grade cervical lesions in liquid-based cytology: with HPV testing and histological correlation. Malays J Pathol 2016; 38:93-101. [PMID: 27568665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Human papillomavirus (HPV) is a necessary cause of cervical cancer and its precursors. Increased expression of high-risk hrHPV viral oncogenes in abnormal cells might increase the expression of p16INK4a. We aimed to determine the role of p16INK4a in detecting hrHPV-transformed epithelial cells in liquid-based cervical cytology, and compared the results with hrHPV DNA testing by realtime polymerase chain reaction (RT-PCR). Fifty-seven cytological samples were tested for p16INK4a immunomarker and hrHPV DNA. Test performance of both tests was determined by comparing sensitivity, specificity and predictive values using available histological follow-up data as gold standard. Of 57 samples, 36 (63.2%) showed immunoreactivity for p16INK4a and 43 (75.4%) were hrHPV-infected. A fairly low concordance rate (k = 0.504) between p16INK4a immunolabelling and hrHPV DNA status was noted. For prediction of cervical intraepithelial neoplasia (CIN) II and worse lesions, p16INK4a had a sensitivity and specificity of 93.5% and 60%; whereas hrHPV DNA testing had a sensitivity and specificity of 100% and 20%. Dual testing by combining p16INK4a and hrHPV showed sensitivity and specificity of 100% and 33.3%. In conclusion, p16INK4a is useful in predicting severity of the cytological abnormalities. Although p16INK4a is more specific but less sensitive than hrHPV in detecting high-grade cervical lesions, a combination of both tests failed to demonstrate significant improvement in diagnostic sensitivity, specificity and predictive value. Larger-scale prospective studies are required to assess further whether this biomarker should be routinely used as primary screening tool independently or in combination with hrHPV testing to improve diagnostic accuracy in cervical cytology.
Collapse
Affiliation(s)
- Y P Wong
- Universiti Kebangsaan Malaysia Medical Center, Faculty of Medicine, Department of Pathology, Jalan Yaacob Latiff, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur, Malaysia.
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Zakaria Z, Tivnan A, Flanagan L, Murray DW, Salvucci M, Stringer BW, Day BW, Boyd AW, Kögel D, Rehm M, O'Brien DF, Byrne AT, Prehn JHM. Patient-derived glioblastoma cells show significant heterogeneity in treatment responses to the inhibitor-of-apoptosis-protein antagonist birinapant. Br J Cancer 2015; 114:188-98. [PMID: 26657652 PMCID: PMC4815807 DOI: 10.1038/bjc.2015.420] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 11/10/2015] [Indexed: 11/22/2022] Open
Abstract
Background: Resistance to temozolomide (TMZ) greatly limits chemotherapeutic effectiveness in glioblastoma (GBM). Here we analysed the ability of the Inhibitor-of-apoptosis-protein (IAP) antagonist birinapant to enhance treatment responses to TMZ in both commercially available and patient-derived GBM cells. Methods: Responses to TMZ and birinapant were analysed in a panel of commercial and patient-derived GBM cell lines using colorimetric viability assays, flow cytometry, morphological analysis and protein expression profiling of pro- and antiapoptotic proteins. Responses in vivo were analysed in an orthotopic xenograft GBM model. Results: Single-agent treatment experiments categorised GBM cells into TMZ-sensitive cells, birinapant-sensitive cells, and cells that were insensitive to either treatment. Combination treatment allowed sensitisation to therapy in only a subset of resistant GBM cells. Cell death analysis identified three principal response patterns: Type A cells that readily activated caspase-8 and cell death in response to TMZ while addition of birinapant further sensitised the cells to TMZ-induced cell death; Type B cells that readily activated caspase-8 and cell death in response to birinapant but did not show further sensitisation with TMZ; and Type C cells that showed no significant cell death or moderately enhanced cell death in the combined treatment paradigm. Furthermore, in vivo, a Type C patient-derived cell line that was TMZ-insensitive in vitro and showed a strong sensitivity to TMZ and TMZ plus birinapant treatments. Conclusions: Our results demonstrate remarkable differences in responses of patient-derived GBM cells to birinapant single and combination treatments, and suggest that therapeutic responses in vivo may be greatly affected by the tumour microenvironment.
Collapse
Affiliation(s)
- Z Zakaria
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland.,National Centre for Neurosurgery, Beaumont Hospital, Dublin 9, Ireland
| | - A Tivnan
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - L Flanagan
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - D W Murray
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - M Salvucci
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - B W Stringer
- Brain Cancer Research Unit, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - B W Day
- Brain Cancer Research Unit, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - A W Boyd
- Brain Cancer Research Unit, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - D Kögel
- Experimental Neurosurgery, Neuroscience Center, Frankfurt University Hospital, Frankfurt am Main, Germany
| | - M Rehm
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - D F O'Brien
- National Centre for Neurosurgery, Beaumont Hospital, Dublin 9, Ireland
| | - A T Byrne
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - J H M Prehn
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| |
Collapse
|
39
|
Abatcha MG, Zakaria Z, Gurmeet KD, Thong KT. Antibiograms, Resistance Genes, Class I Integrons and PFGE profiles of Zoonotic Salmonella in Malaysia. Trop Biomed 2015; 32:573-586. [PMID: 33557447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Salmonella infections occur worldwide, in both developed and developing countries, and a major contributor to morbidity and economic costs. A total of 32 Salmonella isolates isolated from dogs (n=15/162), cats (n=1/126) and snakes (n=16/42) in the Klang valley, Peninsular Malaysia during 2012-2013, were used in this study and 6 serovars were identified. The isolates were then characterized for their susceptibility to commonly used antimicrobial agents using the standard disk diffusion method. The presence of relevant resistance genes and class 1 integrons were investigated by using PCR. Pulsed-field gel electrophoresis (PFGE) was carried out to determine the genetic diversity of these Salmonella strains. Higher resistance rates were observed for tetracycline (40.6%), nalidixic acid (21.9%), sulphamethazole-trimethoprim (18.7%), ampicillin (18.7%) followed by chloramphenicol (15.6%), streptomycin (6.25%), enrofloxacin (12.5%), cephalexin (6.25%), cephalothin (6.25%) and amoxicillin-clavulanic acid (3.12%). Nine percent (3/32) presented a single type of resistance, 6% (2/32) showed resistance to two classes of antimicrobials and 34% (11/32) were multidrugresistant (MDR) (resistant to 3 or more antimicrobials). Analysis of the carriage of resistance genes in the isolates revealed that seven (blaTEM-1, strA, strB, sulII, dfrhI, tetA, and cmlA) out of 10 resistance genes were present. Classes 1 integrons were present in 68.75% (11/16) of the resistance strains. PFGE analysis showed that the strains were very diverse and certain PFGE pattern clusters correlated well with antimicrobial resistance phenotypes. In conclusion, high rates of multidrug resistance were found among the dogs Salmonella strains.
Collapse
Affiliation(s)
- M G Abatcha
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Z Zakaria
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - K D Gurmeet
- Department of Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - K T Thong
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| |
Collapse
|
40
|
Abdelwahab SF, Zakaria Z, Allam WR, Hamdy S, Mahmoud MA, Sobhy M, Rewisha E, Waked I. Interleukin 28B.rs12979860 genotype does not affect hepatitis C viral load in Egyptians with genotype 4 chronic infection. Arch Virol 2015; 160:2833-7. [PMID: 26280523 DOI: 10.1007/s00705-015-2555-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 07/27/2015] [Indexed: 02/08/2023]
Abstract
Several host and viral factors affect the natural history of Hepatitis C Virus (HCV) infection. Interleukin 28B (IL28B).rs12979860 single nucleotide polymorphism (SNP) was found to predict viral clearance with and without therapy. Subjects with the CC (favorable) genotype of IL28B.rs12979860 were more likely to spontaneously clear the infection and respond favorably to therapy. These data suggest that subjects with the "favorable" CC genotype might have a lower viral load when compared to those with the "unfavorable" TT genotype. Therefore, we examined the effect of IL28B.rs12979860 SNP on HCV viral load and clearance among HCV-infected Egyptians. This cross sectional study was conducted on 375 HCV antibody-positive subjects. Detection and quantification of HCV-RNA was determined by RT-PCR. IL28B.rs12979860 genotyping was performed using SYBR green real-time PCR and specific primers. Of 375 HCV-antibody positive subjects, 239 (63.7%) had chronic HCV infection while the remaining 136 (36.3%) subjects had spontaneously cleared the virus. The frequency of IL28-B CC, CT, and TT genotypes among spontaneous resolvers were 54.4%, 39.0%, and 6.6% while among the chronically infected subjects, they were 31.4%, 49.8%, and 18.8%, respectively. As expected, IL28 genotype predicted spontaneous HCV clearance (p < 0.001). The average HCV viral loads were 1.5 ± 0.69 x 10(6), 0.62 ± 0.11 x 10(6) and 0.51 ± 0.14 x 10(6) IU/ml among chronic subjects with the IL28B.rs12979860 CC, CT and TT genotypes, respectively (p > 0.05). In conclusion, our results show that IL28B.rs12979860 genotype does not affect viral load among chronic HCV infected Egyptians. These findings further confirm the complexity of viral host interactions in determining HCV infection outcome.
Collapse
Affiliation(s)
- Sayed F Abdelwahab
- Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, 61511, Egypt.
- Egyptian Company for Blood Transfusion Services (Egyblood), VACSERA, 51 Wizaret El-Zeraa Street, Agouza, Giza, 22311, Egypt.
- Department of Microbiology and Immunology, College of Pharmacy, Taif University, Taif, 21974, Kingdom of Saudi Arabia.
| | - Zainab Zakaria
- Egyptian Company for Blood Transfusion Services (Egyblood), VACSERA, 51 Wizaret El-Zeraa Street, Agouza, Giza, 22311, Egypt
| | - Walaa R Allam
- Egyptian Company for Blood Transfusion Services (Egyblood), VACSERA, 51 Wizaret El-Zeraa Street, Agouza, Giza, 22311, Egypt
| | - Shaimaa Hamdy
- Egyptian Company for Blood Transfusion Services (Egyblood), VACSERA, 51 Wizaret El-Zeraa Street, Agouza, Giza, 22311, Egypt
| | - Mohamed A Mahmoud
- Department of Hepatology, National Liver Institute, Menoufiya University, Menoufiya, 32511, Egypt
| | - Maha Sobhy
- Egyptian Company for Blood Transfusion Services (Egyblood), VACSERA, 51 Wizaret El-Zeraa Street, Agouza, Giza, 22311, Egypt
| | - Eman Rewisha
- Department of Hepatology, National Liver Institute, Menoufiya University, Menoufiya, 32511, Egypt
| | - Imam Waked
- Department of Hepatology, National Liver Institute, Menoufiya University, Menoufiya, 32511, Egypt
| |
Collapse
|
41
|
Abdelwahab SF, Zakaria Z, Sobhy M, Hamdy S, Mahmoud MA, Mikhail N, Allam WR, Rewisha E, Waked I. Differential distribution of IL28B.rs12979860 single-nucleotide polymorphism among Egyptian healthcare workers with and without a hepatitis C virus-specific cellular immune response. Arch Virol 2015; 160:1741-50. [PMID: 25971683 DOI: 10.1007/s00705-015-2446-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 04/30/2015] [Indexed: 02/08/2023]
Abstract
The CC genotype of the interleukin (IL)-28B.rs12979860 gene has been associated with spontaneous hepatitis C virus (HCV) clearance and treatment response. The distribution and correlation of an IL28B.rs12979860 single-nucleotide polymorphism (SNP) with HCV-specific cell-mediated immune (CMI) responses among Egyptian healthcare workers (HCWs) is not known. We determined this relationship in 402 HCWs who serve a patient cohort with ~85% HCV prevalence. We enrolled 402 HCWs in four groups: group 1 (n = 258), seronegative aviremic subjects; group 2 (n = 25), seronegative viremic subjects; group 3 (n = 41), subjects with spontaneously resolved HCV infection; and group 4 (n = 78), chronic HCV patients. All subjects were tested for an HCV-specific CMI response using an ex-vivo interferon-gamma (IFNγ) ELISpot assay with nine HCV genotype-4a overlapping 15-mer peptide pools corresponding to all of the HCV proteins. All subjects were tested for IL28B.rs12979860 SNP by real-time PCR. An HCV-specific CMI was demonstrated in ~27% of the seronegative aviremic HCWs (group 1), suggesting clearance of infection after low-level exposure to HCV. The frequency of IL28B.rs12979860 C allele homozygosity in the four groups was 49%, 48%, 49%, and 23%, while that of the T allele was 14%, 16%, 12 and 19%, respectively, suggesting differential distributions among subjects with different HCV status. As reported, IL28B.rs12979860 predicted the outcome of HCV infection (p < 0.05), but we did not find any relationship between the IL28B genotypes and the outcome of HCV-specific CMI responses in the four groups (p > 0.05). The data show differential IL28B.rs12979860 genotype distribution among Egyptian HCWs with different HCV status and could not predict the outcome of HCV-specific CMI responses.
Collapse
Affiliation(s)
- Sayed F Abdelwahab
- Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, 61511, Egypt,
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Musa HI, Hassan L, Shamsuddin ZH, Panchadcharam C, Zakaria Z, Abdul Aziz S, Rachmat RFN. Case-control investigation on the risk factors of melioidosis in small ruminant farms in Peninsular Malaysia. J Appl Microbiol 2015; 119:331-41. [PMID: 25891038 DOI: 10.1111/jam.12830] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 03/30/2015] [Accepted: 04/12/2015] [Indexed: 01/13/2023]
Abstract
AIMS Epidemiology of melioidosis is poorly understood because its occurrence is influenced by complex interaction of environmental, climatic, physicochemical and host factors. We investigated the potential risk factors for the exposure to Burkholderia pseudomallei in small ruminants' farms in Peninsular Malaysia. METHODS AND RESULTS Melioidosis-positive (n = 33) and negative (n = 27) farms were selected and visited for interviews and environmental samples collection. The characteristics and putative disease risk factors were compared between the case and the control farms using Chi-square test and logistic regression analysis. The multivariable logistic regression analysis showed that the odds of melioidosis were significantly higher in farms that had bush clearing around farms (odds ratio (OR) = 6.61, 95% confidence interval (CI) = 1.12-38.84, P = 0.037), in farms with B. pseudomallei present in the soil (OR = 6.23, 95% CI = 1.03-37.68, P = 0.046), in farms that have other animal species present (OR = 7.96, 95% CI = 1.14-55.99, P = 0.037) and in farms that had flooding or waterlogging conditions (OR = 11.95, 95% CI = 1.39-102.6, P = 0.024) when compared to the odds of the disease in farms that did not have the above conditions. The odds of the disease in farms that treated their soils with lime were significantly lower (OR = 0.028, 95% CI = 0.003-0.29, P = 0.003) compared to the odds in those that did not. CONCLUSIONS The risk factors for the exposure to B. pseudomallei highlighted above may have contributed to the occurrence of melioidosis in animals in the study farms. SIGNIFICANCE AND IMPACT OF THE STUDY Information from the study may be helpful in planning control measures against melioidosis and have improved understanding of the epidemiology of the disease in livestock farms.
Collapse
Affiliation(s)
- H I Musa
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Selangor, Malaysia.,Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Maiduguri, Borno State, Nigeria
| | - L Hassan
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Selangor, Malaysia
| | - Z H Shamsuddin
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Selangor, Malaysia
| | | | - Z Zakaria
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Selangor, Malaysia
| | - S Abdul Aziz
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Selangor, Malaysia
| | - R F N Rachmat
- Department of Veterinary Services, Wisma Tani, Putrajaya, Malaysia
| |
Collapse
|
43
|
Ahmad Sharoni SK, Shdaifat EA, Mohd Abd Majid HA, Shohor NA, Ahmad F, Zakaria Z. Social support and self-care activities among the elderly patients with diabetes in Kelantan. Malays Fam Physician 2015; 10:34-43. [PMID: 26425293 PMCID: PMC4567891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
INTRODUCTION Diabetes is common among the elderly and can significantly affect their lives including the issues related with social support and diabetic self-care activities. OBJECTIVES The objective of this study was to examine the social support and self-care activities among the elderly patients with diabetes. METHODS A survey involving 200 patients was conducted from March 2013 to May 2013 in three hospitals in Kelantan. Data were obtained through self-administered questionnaires and clinical characteristics were acquired from the patients' records. RESULTS The scores for social support (mean = 19.26; SD = 2.63) and self-care activities (mean = 14.83; SD = 4.92) were moderate. Higher social support was associated with high levels of glycated haemoglobin (HbA1c), fasting blood sugar (FBS) level, the duration of diabetes and a decrease in body mass index (BMI) (p<0.05). It was observed that the patients with low educational, Hb1Ac and FBS level, with other chronic diseases and who have had diabetes for some time had low self-care activities (p<0.05). There was a significant negative relationship between an increase in social support and decrease in self-care activity (p<0.05). CONCLUSION Healthcare providers, family and friends have to strengthen their relationship with the elderly patients with diabetes to provide more social support and promote the compliance with diabetic self-care activities to improve clinical outcomes.
Collapse
Affiliation(s)
- S K Ahmad Sharoni
- Siti Khuzaimah Ahmad Sharoni (Corresponding author) Master of Nursing Science (UM) Nursing Department, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, Malaysia. or
| | - E A Shdaifat
- Emad Adel Shdaifat PhD in Community Health (UKM) College of Nursing, University of Dammam, Saudi Arabia.
| | - H A Mohd Abd Majid
- Hayati Adilin Mohd Abd Majid PhD in Nutritional Sciences, University of Nottingham (U.K) Food Service, Faculty of Hotel & Tourism, Universiti Teknologi MARA, Dungun, 24300, Terengganu, Malaysia
| | - N A Shohor
- Norhafizatul Akma Shohor Master in Nursing (Orthopedics and Traumatology) (UKM) Nursing Department, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, Malaysia.
| | - F Ahmad
- Fazimah Ahmad Bachelor of Nursing (hons) (UiTM) Nursing Department, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, Malaysia
| | - Z Zakaria
- Zalina Zakaria Bachelor of Nursing (hons) (UiTM) Nursing Department, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, Malaysia
| |
Collapse
|
44
|
Knapp S, Zakaria Z, Hashem M, Zaghla H, Khakoo SI, Waked I, Thursz M, Abdelwahab SF. Influence of IFNL3.rs12979860 and IFNL4.ss469415590 polymorphism on clearance of hepatitis C virus infection among Egyptians. Hepatol Int 2015; 9:251-7. [PMID: 25788203 DOI: 10.1007/s12072-015-9619-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 02/19/2015] [Indexed: 02/05/2023]
Abstract
BACKGROUND/PURPOSE Single-nucleotide polymorphisms (SNPs) around the interferon lambda 3 (IFNL3; also known as interleukin 28B; IL28B) gene are associated with spontaneous hepatitis C virus (HCV) clearance. Interferon lambda 4 (IFNL4).ss469415590, in linkage disequilibrium (LD) with IFNL3.rs12979860 among the Caucasian population, has recently been identified as a potential functional variant. Our objective was to assess the LD between IFNL3.rs12979860 and IFNL4.ss469415590 and to compare their effect on the outcome of HCV infection among Egyptians, mainly infected with HCV genotype 4. METHODS One-hundred and eighty-five Egyptian HCV patients (77 spontaneous resolvers and 108 chronic subjects), and 122 healthy controls were genotyped for both IL28B.rs12979860 and IFNL4.ss469415590. Logistic regression models including factors with univariate association with the outcome of infection were calculated for each genetic marker. The LD was also calculated for the 122 healthy controls. RESULTS The CC genotype of IFNL3.rs12979860 was more frequent among individuals with HCV spontaneous resolution than among those with chronic infection (57 vs. 27%; adjusted OR 3.84; 95% CI 2.02-7.30; p < 0.0001). Also, the TT/TT genotype of IFNL4.ss469415590 was more frequent among individuals with spontaneous resolution (49 vs. 20%; adjusted OR 4.17; 95% CI 2.12-8.19; p < 0.0001). Both markers were in LD (D' = 0.96; r (2) = 0.84). CONCLUSION The IFNL3.rs12979860 and IFNL4.ss469415590 variants have comparable effects on spontaneous resolution of HCV among Egyptians, for whom both markers are closely linked.
Collapse
Affiliation(s)
- Susanne Knapp
- Department of Hepatology and Gastroenterology, Imperial College, St. Mary's Hospital, London, W21NY, UK,
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Ali F, Safawi EB, Zakaria Z, Basiron N. Abdominal wall reconstruction after resection of an enterocutaneous fistula with an island pedicled anterolateral thigh perforator flap. Case report. Clin Ter 2014; 164:413-5. [PMID: 24217827 DOI: 10.7417/ct.2013.1605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Entero-cutaneous fistula resulting from a locally invasive large bowel carcinoma is a difficult surgical challenge. En-bloc resection of the involved organs and the entero-cutaneous fistula tract with a healthy tissue margin will result in a composite abdominal wall defect that requires closure. Reconstructive surgical options include primary closure, components separation and the use of local, regional or free flaps with or without prosthetic mesh. We report a case of an abdominal enterocutaneous fistula secondary to a locally invasive sigmoid carcinoma, which was reconstructed with a pedicled antero-lateral thigh perforator (ALT) flap. To our knowledge, this is the first case of a malignant entero-cutaneous fistula, which was reconstructed with an ALT flap.
Collapse
Affiliation(s)
- F Ali
- Departments of Surgery, Plastic Surgical Unit, University Kebangsaan Malaysia Medical Center, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | | | | | | |
Collapse
|
46
|
Zakaria Z, Zainuddin NA, Husain MN, Kamaruzaman MNI, Aziz MZAA, Haron NZ, Isa AAM, Mutalib MA. Design of Antenna with Rectifying Circuit for Low Power Wireless Sensor Network Application. adv sci lett 2014; 20:1788-1792. [DOI: 10.1166/asl.2014.5621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
47
|
Zakaria N, Yusoff N, Zakaria Z, Lim M, Baharuddin P, Fakiruddin S, Yahaya B. OP0021 Non-small-cell lung cancer exhibits multipotent characteristics of stem cells. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
48
|
Allam WR, Barakat A, Zakaria Z, Galal G, Abdel-Ghafar TS, El-Tabbakh M, Mikhail N, Waked I, Abdelwahab SF. Schistosomiasis does not affect the outcome of HCV infection in genotype 4-infected patients. Am J Trop Med Hyg 2014; 90:823-9. [PMID: 24615138 PMCID: PMC4015572 DOI: 10.4269/ajtmh.13-0703] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Although reports suggest that Schistosoma mansoni increases hepatitis C virus (HCV) morbidity and chronicity, its impact on HCV spontaneous resolution is not clear. HCV genotype, viral load, abdominal ultrasonographic findings, and HCV-specific cell-mediated immunity (CMI) were examined among 141 healthcare workers infected with HCV (68 workers with and 73 workers without S. mansoni). HCV genotype 4 was dominate, and viral loads were 2.62 ± 0.69 × 10(6) and 4.24 ± 1.4 × 10(6) IU/mL among patients with and without coinfection, respectively (P = 0.309); 23.5% with and 32.9% without coinfection had spontaneously resolved HCV infection (P = 0.297). Interferon-γ spot-forming cells/10(6) peripheral blood mononuclear cells among responding viremic patients with and without coinfection were 716 ± 194 and 587 ± 162, whereas among aviremic patients, it was 794 ± 272 and 365 ± 36 (P > 0.05), respectively. In conclusion, there was no statistical difference in HCV spontaneous resolution, viral load, liver pathology, or CMI in patients with or without S. mansoni coinfection, suggesting that it did not impact the outcome of HCV infection.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Sayed F. Abdelwahab
- *Address correspondence to Sayed F. Abdelwahab, Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia 61511, Egypt. E-mail:
| |
Collapse
|
49
|
Galal IF, Zakaria Z, Allam WR, Mahmoud MA, Ezzat AR, Osman A, Waked I, Strickland GT, Abdelwahab SF. Cross reactive cellular immune response to HCV genotype 1 and 4 antigens among genotype 4 exposed subjects. PLoS One 2014; 9:e101264. [PMID: 24979366 PMCID: PMC4076338 DOI: 10.1371/journal.pone.0101264] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 06/04/2014] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Hepatitis C Virus (HCV) infection is a global health burden particularly in Egypt, where HCV genotype 4a (GT-4a) predominates. The prevention and control of HCV infection will remain a challenge until the development of an effective vaccine that protects against different genotypes. Several HCV GT-1-based vaccines are in different stages of clinical trials, but antigenic differences could make protection against other genotypes problematic. In this regard, data comparing the cell-mediated immune (CMI) response to different HCV genotypes are limited. We aimed to ex vivo investigate whether GT-1-based vaccine may protect against HCV GT-4 infections. This was carried out on samples collected from genotype 4 infected/exposed subjects. METHODS/PRINCIPAL FINDINGS The CMI responses of 35 subjects; infected with HCV GT-4/or who had spontaneously-resolved the infection and 10 healthy control subjects; to two sets of seven HCV overlapping 15-mer peptide pools derived from both genotypes; and covering most of the viral proteins; were evaluated. This was carried out using an interferon gamma (IFNγ) enzyme-linked immunospot (ELISpot) assay. Peripheral blood mononuclear cells (PBMC) from 17 subjects (48%) responded to at least one peptide pool derived from GT-1b/GT-4a with 13 subjects responding to peptide pools from both genotypes. A strong correlation was found in the responses to both genotypes (r = 0.82, p<0.001; 95% confidence interval = 0.562-0.933). The average IFNγ total spot forming cells (SFC)/10(6) PBMC (±SE) from the responding subjects for GT-1b and GT-4a was 216±56 and 199±55, respectively (p = 0.833). Also, there were no significant differences between those who cleared their HCV infection or who remained HCV-RNA positive (p = 0.8). CONCLUSION/SIGNIFICANCE Our data suggest that an effective GT-1b vaccine could protect from GT-4a infection. These data could help in HCV rationale vaccine design and efficacy studies and further our understanding of HCV cross protection against different genotypes.
Collapse
Affiliation(s)
- Iman F. Galal
- Egyptian Company for Blood Transfusion Services (Egyblood)/VACSERA; Agouza, Giza, Egypt
| | - Zainab Zakaria
- Egyptian Company for Blood Transfusion Services (Egyblood)/VACSERA; Agouza, Giza, Egypt
| | - Walaa R. Allam
- Egyptian Company for Blood Transfusion Services (Egyblood)/VACSERA; Agouza, Giza, Egypt
| | - Mohamed A. Mahmoud
- Department of Hepatology, National Liver Institute, Menoufiya University, Menoufiya, Egypt
| | - Ahmed R. Ezzat
- Department of Zoology, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ahmed Osman
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo
| | - Imam Waked
- Department of Hepatology, National Liver Institute, Menoufiya University, Menoufiya, Egypt
| | - G. Thomas Strickland
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| | - Sayed F. Abdelwahab
- Egyptian Company for Blood Transfusion Services (Egyblood)/VACSERA; Agouza, Giza, Egypt
- Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt
- * E-mail:
| |
Collapse
|
50
|
Arullappan S, Muhamad S, Zakaria Z. Cytotoxic Activity of the Leaf and Stem Extracts of Hibiscus rosa sinensis (Malvaceae) against Leukaemic Cell Line (K-562). TROP J PHARM RES 2013. [DOI: 10.4314/tjpr.v12i5.12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|