1
|
Hanim BS, Rahim RA, Mohd Salleh MF, Zakaria H, Abd Shukor N. CD47 and CD36 expressions in the placenta of mothers with chorioamnionitis. Malays J Pathol 2023; 45:463-471. [PMID: 38155387] [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: 12/30/2023]
Abstract
INTRODUCTION Chorioamnionitis is the inflammation of the placenta and is histologically defined as the presence of neutrophilic infiltration into the chorio-amnion membrane with and without involvement of the umbilical cord. Currently, the inflammatory mediators involved in the eliciting of inflammatory response is still largely under investigation. CD47 and CD36 are pro-inflammatory molecules that are still under investigation. The aim of this study was to determine the expressions of CD47 and CD36 in the placenta of mothers with chorioamnionitis. MATERIALS AND METHODS This was a cross-sectional study, involving a total of 100 cases that comprised of acute subchorionitis (stage I, n=20), acute chorioamnionitis (stage II, n=20), acute necrotising chorioamnionitis (stage III, n=20) and non-chorioamnionitis placenta as control (n=40). All tissue blocks were retrieved from the archived pathology record over a period of 4 years. CD36 and CD47 immunohistochemistry were performed on all cases and their expression in various cell types on the placenta were analysed. RESULTS CD36 was expressed only on the foetal vascular endothelial cells. Interestingly, CD47 showed positive staining on the neutrophils and its expression was significantly different between maternal inflammatory response stage II chorioamnionitis (n=13/20, p<0.001) with stage I and stage III chorioamnionitis. DISCUSSION Our study showed CD47 was expressed in the neutrophils and it was associated with poorer perinatal outcomes and it may have a role in the pathogenesis of chorioamnionitis.
Collapse
Affiliation(s)
- B S Hanim
- Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Pathology, Kuala Lumpur, Malaysia
| | - R A Rahim
- Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Pathology, Kuala Lumpur, Malaysia
| | - M F Mohd Salleh
- Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Pathology, Kuala Lumpur, Malaysia
| | - H Zakaria
- Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Pathology, Kuala Lumpur, Malaysia
| | - N Abd Shukor
- Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Pathology, Kuala Lumpur, Malaysia.
| |
Collapse
|
2
|
Maidin NNM, Buyong MR, Rahim RA, Mohamed MA. Dielectrophoresis applications in biomedical field and future perspectives in biomedical technology. Electrophoresis 2021; 42:2033-2059. [PMID: 34346062 DOI: 10.1002/elps.202100043] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 07/25/2021] [Accepted: 07/27/2021] [Indexed: 11/09/2022]
Abstract
Dielectrophoresis (DEP) is a technique to manipulate trajectories of polarisable particles in non-uniform electric fields by utilising unique dielectric properties. The manipulation of a cell using DEP has been demonstrated in various modes, thereby indicating potential applications in the biomedical field. In this review, recent DEP applications in the biomedical field are discussed. This review is intended to highlight research work that shows significant approach related to dielectrophoresis application in biomedical field reported between 2016 and 2020. Firstly, single-shell model and multiple-shell model of cells are introduced. Current device structures and recently introduced electrode patterns for DEP applications are discussed. Secondly, the biomedical uses of DEP in liquid biopsies, stem cell therapies, and diagnosis of infectious diseases due to bacteria and viruses are presented. Finally, the challenges in DEP research are discussed, and the reported solutions are explained. DEP's potential research directions are mentioned. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Nur Nasyifa Mohd Maidin
- Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor, 43600, Malaysia
| | - Muhamad Ramdzan Buyong
- Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor, 43600, Malaysia
| | - Ruslinda A Rahim
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia.,National Nanotechnology Centre (NNC), Ministry of Science Technology and Innovation (MOSTI), Federal Government Administrative Centre, Putrajaya, 62662, Malaysia
| | - Mohd Ambri Mohamed
- Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor, 43600, Malaysia
| |
Collapse
|
3
|
Mohammed AM, Al-Khateeb IK, Haider AJ, Rahim RA, Hashim U. Preparation of DNA biosensor application from fuel oil waste by functionalization and characterization of MWCNT. Sensing and Bio-Sensing Research 2017. [DOI: 10.1016/j.sbsr.2017.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
4
|
Tony Voo CS, Voon CH, Lee CC, Gopinath SC, Lim BY, Mohd Arshad MK, Foo KL, Hashim U, A. Rahim R, Nordin MNA, Parmin NA. Effect of Heating Duration on the Synthesis of Silicon Carbide Nanotubes by Microwave Heating of MWCNTs and Silica. SAINS MALAYS 2017. [DOI: 10.17576/jsm-2017-4607-08] [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: 11/17/2022]
|
5
|
Zainol Abidin AS, Rahim RA, Md Arshad MK, Fatin Nabilah MF, Voon CH, Tang TH, Citartan M. Current and Potential Developments of Cortisol Aptasensing towards Point-of-Care Diagnostics (POTC). Sensors (Basel) 2017; 17:s17051180. [PMID: 28531146 PMCID: PMC5470925 DOI: 10.3390/s17051180] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 12/19/2022]
Abstract
Anxiety is a psychological problem that often emerges during the normal course of human life. The detection of anxiety often involves a physical exam and a self-reporting questionnaire. However, these approaches have limitations, as the data might lack reliability and consistency upon application to the same population over time. Furthermore, there might be varying understanding and interpretations of the particular question by the participant, which necessitating the approach of using biomarker-based measurement for stress diagnosis. The most prominent biomarker related to stress, hormone cortisol, plays a key role in the fight-or-flight situation, alters the immune response, and suppresses the digestive and the reproductive systems. We have taken the endeavour to review the available aptamer-based biosensor (aptasensor) for cortisol detection. The potential point-of-care diagnostic strategies that could be harnessed for the aptasensing of cortisol were also envisaged.
Collapse
Affiliation(s)
- Azrul Syafiq Zainol Abidin
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Ruslinda A Rahim
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Mohd Khairuddin Md Arshad
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Mohd Faudzi Fatin Nabilah
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Chun Hong Voon
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Thean-Hock Tang
- Advanced Medical & Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang 13200, Malaysia.
| | - Marimuthu Citartan
- Advanced Medical & Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang 13200, Malaysia.
| |
Collapse
|
6
|
Abstract
Detection of HIV-TAT peptide on functionalized 3-dimensional carbon micropillar array platform with detection limit of 50 pmol.
Collapse
Affiliation(s)
- Varun Penmatsa
- Department of Mechanical and Materials Engineering
- Florida International University
- Miami
- USA
- Department of Ophthalmology and Visual Science
| | - Ruslinda A. Rahim
- Institute of Nano Electronic Engineering (INEE)
- Universiti Malaysia Perlis
- Perlis
- Malaysia
| | - Hiroshi Kawarada
- School of Science and Engineering
- Waseda University
- Shinjuku 169-8555
- Japan
| | - Chunlei Wang
- Department of Mechanical and Materials Engineering
- Florida International University
- Miami
- USA
| |
Collapse
|
7
|
Vaithilingam RD, Safii SH, Baharuddin NA, Karen-Ng LP, Saub R, Ariffin F, Ramli H, Sharifuddin A, Hidayat MFH, Raman R, Chan YK, Rani NA, Rahim RA, Shahruddin N, Cheong SC, Bartold PM, Zain RB. Establishing and managing a periodontal biobank for research: the sharing of experience. Oral Dis 2014; 21:e62-9. [PMID: 24930489 DOI: 10.1111/odi.12267] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 03/10/2014] [Revised: 05/12/2014] [Accepted: 06/08/2014] [Indexed: 12/30/2022]
Abstract
Periodontal bio-repositories, which allow banking of clinically validated human data and biological samples, provide an opportunity to derive biomarkers for periodontal diagnosis, prognosis and therapeutic activities which are expected to improve patient management. This article presents the establishing of the Malaysian Periodontal Database and Biobank System (MPDBS) which was initiated in 2011 with the aim to facilitate periodontal research. Partnerships were established with collaborating centres. Policies on specimen access, authorship and acknowledgement policies were agreed upon by all participating centres before the initiation of the periodontal biobank. Ethical approval for the collection of samples and data were obtained from institutional ethics review boards. A broad-based approach for informed consent was used, which covered areas related to quality of life impacts, genetics and molecular aspects of periodontal disease. Sample collection and processing was performed using a standardized protocol. Biobanking resources such as equipment and freezers were shared with the Malaysian Oral Cancer Database and Tissue Bank System (MOCDTBS). In the development of the MPDBS, challenges that were previously faced by the MOCDTBS were considered. Future challenges in terms of ethical and legal issues will be faced when international collaborations necessitate the transportation of specimens across borders.
Collapse
Affiliation(s)
- R D Vaithilingam
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
William JL, Radu S, Aziz SA, Rahim RA, Cheah YK, Liwan A, Lihan S. Prevalence of Staphylococcus aureus carriage by young Malaysian footballers during indoor training. Br J Sports Med 2004; 38:12-4. [PMID: 14751938 PMCID: PMC1724749 DOI: 10.1136/bjsm.2002.000653] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Research has shown that athletes are carriers of Staphylococcus aureus during physical activity. OBJECTIVE To estimate the mean total plate count of S aureus carried by footballers before and after training at an indoor venue. METHODS Forty Malay and 20 Indian students volunteered to participate. There was also a control group consisting of 40 Malay and 20 Indian students who were not active. The experimental group were active footballers who had played at school or club level. The subjects were healthy and free of skin infection. The experiment was divided into three sessions, with 20 subjects present at each. At each session, the subjects trained for one hour. Swabs were taken from the skin, nose, and ear before and after training. For the control group, swabs were taken only once from the skin, nose, and ear. The swabs were subjected to biochemical tests and then streaked and cultured aerobically in Baird Parker agar plates for 24 hours at 37 degrees C. Black colonies with a clear zone were presumed to be S aureus, and the mean total plate count of the colonies was estimated. Gram staining, catalase, coagulase slide, coagulase tube, acetoin production, o-nitrophenyl beta-D-galactopyranoside (ONPG), and mannitol fermentation tests were used to confirm the colonies as S aureus. A haemolysin test was conducted with human blood to confirm haemolytic activity. RESULTS All subjects in the experimental group were carrying S aureus both before and after training. The estimated mean total counts of colonies from the skin, ear, and nose for the Malays before training were 33, 71, and 312 respectively. Counts after training were 21, 44, and 452 respectively. The results for the Indians were 72, 80, and 309 respectively before training and 55, 200, and 466 respectively after training. The positive results for Gram staining, catalase, coagulase slide, coagulase tube, acetoin production, ONPG, and mannitol fermentation tests were 100%, 96%, 95%, 95%, 93%, 93%, and 90% respectively. All subjects in the control group were also carrying S aureus. CONCLUSIONS All of the players were carriers of S aureus during training. The decrease in total count from the skin for both races may be due to lysozyme activity lysing the bacterial cells. Contamination of the environment with these bacteria may have increased the estimated total plate count in the nose. The experimental group face a higher risk of infection because of lower immunity during training and higher rate of injuries compared with the control group.
Collapse
|
9
|
Hassan Z, Purwati E, Radu S, Rahim RA, Rusul G. Prevalence of Listeria spp and Listeria monocytogenes in meat and fermented fish in Malaysia. Southeast Asian J Trop Med Public Health 2001; 32:402-7. [PMID: 11556596] [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: 02/21/2023]
Abstract
Fermented fish and meat samples were purchased from supermarket and wet market for microbiological analysis of Listeria species and Listeria monocytogenes contamination. Listeria species were isolated from 17 (73.9%) of 23 samples of imported frozen beef, 10 (43.5%) of the 23 samples of local beef and 14 (56%) of the 25 samples of fermented fish from wet market. Listeria monocytogenes occurred in 15 (75%) of the frozen beef samples, 6 (30.4%) of the 23 samples of local meat and 3 (12%) of the 25 samples from fermented fish. Listeria species was not isolated from any of the 23 samples of imported frozen beef from supermarket and from the 5 samples of buffalo meat examined. This highlights the possibility of Listeria spp or L. monocytogenes to persist in meat and fermented fish in wet market and raises the problem of illness due to the handling and consumption of Listeria-contaminated meat or fermented fish are likely as evidence by the high contamination rates of samples sold at the wet market.
Collapse
Affiliation(s)
- Z Hassan
- Department of Food Science, Faculty of Food Science and Biotechnology, University Putra Malaysia, Serdang, Selangor
| | | | | | | | | |
Collapse
|
10
|
Raja N, Shamsudin MN, Somarny W, Rosli R, Rahim RA, Radu S. Detection and molecular characterization of the zot gene in Vibrio cholerae and V. alginolyticus isolates. Southeast Asian J Trop Med Public Health 2001; 32:100-4. [PMID: 11485069] [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: 02/21/2023]
Abstract
A total of 11 Vibrio cholerae isolates from 1996-1998 outbreaks in Malaysia and 4 V. alginolyticus were analyzed. Isolates were characterized by polymerase chain reaction (PCR) and Southern hybridization for the presence of the gene encoding zonula occludens toxin (zot). Screening of zot gene by PCR revealed the presence of this gene in V. cholerae and V. alginolyticus. The zot gene from one V. cholerae Ogawa isolate that was cloned in a pCR 2.1 TOPO vector was sequenced. The sequences obtained were 99% homologous to the zot gene sequence from the Gene Bank.
Collapse
Affiliation(s)
- N Raja
- Department of Clinical Laboratory Sciences, Faculty of Medicine and Heath Sciences, University Putra Malaysia, Serdang, Selangor
| | | | | | | | | | | |
Collapse
|
11
|
Radu S, Toosa H, Rahim RA, Reezal A, Ahmad M, Hamid AN, Rusul G, Nishibuchi M. Occurrence of the vanA and vanC2/C3 genes in Enterococcus species isolated from poultry sources in Malaysia. Diagn Microbiol Infect Dis 2001; 39:145-53. [PMID: 11337180 DOI: 10.1016/s0732-8893(01)00222-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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: 11/21/2022]
Abstract
Enterococcus species isolated from poultry sources were characterized for their resistance to antibiotics, plasmid content, presence of van genes and their diversity by randomly amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR). The results showed that all isolates were multi-resistance to the antibiotics tested. Ampicillin (15/70) followed by chloramphenicol (37/70) were the most active antibiotics tested against the Enterococcus spp. isolates, while the overall resistant rates against the other antibiotics were between 64.3% to 100%. All vancomycin-resistant E. faecalis, E. durans, E. hirae and E. faecium isolates tested by the disk diffusion assay were positive in PCR detection for presence of vanA gene. All E. casseliflavus isolates were positive for vanC2/C3 gene. However, none of the Enterococcus spp. isolates were positive for vanB and vanC1 genes. Plasmids ranging in sizes between 1.1 to ca. 35.8 MDa were detected in 38/70 of the Enterococcus isolates. When the genetic relationship among all isolates of the individual species were tested by RAPD-PCR, genetic differences detected suggested a high genetic polymorphisms of isolates in each individual species. Our results indicates that further epidemiological studies are necessary to elucidate the role of food animals as reservoir of VRE and the public health significance of infections caused by Enterococcus spp.
Collapse
Affiliation(s)
- S Radu
- Department of Biotechnology, Faculty of Food Science and Biotechnology, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Abstract
Comparison of the frequency of occurrence of restriction fragment length polymorphisms in control human DNAs and DNAs from infants dying from sudden infant death syndrome has indicated no significant difference in the case of restriction fragment length polymorphisms associated with the heat shock protein genes hsp70 and hsp90. A highly significant difference was detected, however, in the case of the specific restriction fragment length polymorphisms detected by an hsp60 gene probe in MspI digests.
Collapse
Affiliation(s)
- R A Rahim
- Department of Bioscience and Biotechnology, Todd Centre, University of Strathclyde, Glasgow
| | | | | | | |
Collapse
|
13
|
Abstract
Exposure of HeLa cells in monolayer culture to increasing concentrations of exogenously added H2O2 causes damage to cellular DNA. When the DNA is subsequently isolated from the non-apoptotic cells remaining in such cultures, evidence was obtained to suggest that the DNA damage elicited in intact cells was non-random and that certain nucleotide sequences associated with, or related to, the genes for heat shock protein 60 and catalase were more susceptible to damage than others. In contrast, these particular sequences were not specifically susceptible to damage when naked human DNA was exposed directly to H2O2 in vitro. On an overall comparative basis, sequences in the genes encoding catalase, alpha-1 antitrypsin and beta-actin appear more vulnerable to H2O2 in vivo, than sequences in H-ras and the P53 gene which seem surprisingly resistant.
Collapse
Affiliation(s)
- R H Burdon
- Department of Bioscience and Biotechnology, Todd Centre, University of Strathclyde, Glasgow, UK
| | | | | | | |
Collapse
|