1
|
Molecular Investigation of Human Cytomegalovirus and Epstein-Barr virus in Glioblastoma Brain Tumor: A Case-Control Study in Iran. IRANIAN BIOMEDICAL JOURNAL 2021; 25:426-33. [PMID: 34696577 DOI: 10.52547/ibj.25.6.426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background Glioblastoma multiforme is the most invasive and lethal form of brain cancer with unclear etiology. Our study aimed to investigate the molecular prevalence of human cytomegalovirus (HCMV) and Epstein-Barr virus (EBV) infections in patients with glioblastoma multiforme (GBM). Methods This case-control study was conducted on 42 FFPE brain tumor samples from GBM patients and 42 brain autopsies from subjects without neurological disorders. The presence of EBV and HCMV DNA was determined, using PCR and nested-PCR assays, respectively. Results HCMV DNA was detected in 3 out of 42 (7.1%) of GBM samples and was absent from the control group (p = 0.07). Importantly, EBV DNA was detected in 9 out of 42 (21.4%) brain tissue specimens of GBM subjects, but again in none of the control group (p = 0.001). Conclusion Our findings indicate that infection with EBV is associated with GBM.
Collapse
|
2
|
Al-Obaida MI, Al-Nakhli AK, Arif IA, Faden A, Al-Otaibi S, Al-Eid B, Ekhzaimy A, Khan HA. Molecular identification and diversity analysis of dental bacteria in diabetic and non-diabetic females from Saudi Arabia. Saudi J Biol Sci 2020; 27:358-362. [PMID: 31889858 PMCID: PMC6933233 DOI: 10.1016/j.sjbs.2019.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/20/2019] [Accepted: 10/20/2019] [Indexed: 02/08/2023] Open
Abstract
Periodontal disease is a chronic infectious disease, which is characterized by the damaged dental hard tissue by lactic acid generated by microorganisms after the fermentation of carbohydrates rich diet. The risk of periodontal disease is known to be higher in diabetic patients. We compared the diversity of five commonly occurring dental bacteria including Porphyromonas gingivalis, Tannerella forsythia, Capnocytophaga ochracea, Prevotella intermedia, and Aggregatibacter actinomycetemcomitans in 14 type-2 diabetic patients and equal numbers of healthy controls. The subgingival samples were collected using sterile paper points. We used 16S rRNA sequence specific primers for PCR-based identification of dental bacteria. Our results showed that A. actinomycetemcomitans was completely absent in control subjects but present in 43% of diabetic patients. C. ochracea was highly prevalent in diabetic patients (100%) as compared to controls (28.5%). The frequency of other three bacterial species was also higher in diabetic patients than control subjects. These findings indicate that dental bacteria are highly prevalent in subgingival pockets of diabetic patients. Therefore, proper monitoring of diabetic patients for dental care is important to prevent bacterial growth and its sequela in risky individuals. Further case-control studies using larger sample size would help in validating the association between oral diseases and diabetes.
Collapse
Affiliation(s)
- Mohammad I. Al-Obaida
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Alaa K.M. Al-Nakhli
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ibrahim A. Arif
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Asmaa Faden
- Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Sahar Al-Otaibi
- Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Bushra Al-Eid
- Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Aishah Ekhzaimy
- Division of Endocrinology, Department of Medicine, King Khalid University Hospital, Riyadh 12372, Saudi Arabia
| | - Haseeb A. Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
- Corresponding author at: Department of Biochemistry, College of Science, King Saud University, Bldg. 5, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| |
Collapse
|
3
|
Shahi S, Zununi Vahed S, Fathi N, Sharifi S. Polymerase chain reaction (PCR)-based methods: Promising molecular tools in dentistry. Int J Biol Macromol 2018; 117:983-992. [DOI: 10.1016/j.ijbiomac.2018.05.085] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/13/2018] [Accepted: 05/14/2018] [Indexed: 02/06/2023]
|
4
|
Kaczmarek M, Jurczyk K, Purwin D, Koper JK, Romaniuk A, Lipinska N, Jakubowicz J, Jurczyk MU. Molecular analysis of biocompatibility of anodized titanium with deposited silver nanodendrites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:437-444. [PMID: 30274076 DOI: 10.1016/j.msec.2018.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 07/03/2018] [Accepted: 08/01/2018] [Indexed: 12/20/2022]
Abstract
Titanium (>99.6% purity) and its anodically oxidized modifications, with and without deposited silver nanodendrites regarding its biocompatibility were evaluated. In human gingival fibroblasts and osteoblast cell lines grown on tested samples, the level of expression of genes encoding αV (ITGAV) and β1 (ITGB1) integrin subunits also genes encoding focal adhesion (FAK) and extracellular-signal regulated (ERK) kinases was assessed. For this purpose, the qualitative and quantitative PCR technique was used. The expression of studied genes was dependent on the origin of cell lines and the type of evaluated material. The high expression of PBGD and ITGAV genes in fibroblasts grown on the surface of anodically modified titanium with deposited silver nanodendrites indicates potentially high biocompatibility of these samples for soft tissue cells. The high expression of the ITGB1 and ERK1 genes and the enhanced expression of the FAK gene in osteoblasts cells grown on the tested material was also observed. Summarizing, the nanocrystalline Ti modified with silver deposits showed higher biocompatibility in comparison with the conventional pure Ti samples.
Collapse
Affiliation(s)
- Mariusz Kaczmarek
- Department of Immunology, Poznan University of Medical Sciences, Rokietnicka 5D, 60-806 Poznan, Poland.
| | - Karolina Jurczyk
- Department of Conservative Dentistry and Periodontology, Poznan University of Medical Sciences, Bukowska 70, 60-812 Poznan, Poland
| | - Dominika Purwin
- Department of Immunology, Poznan University of Medical Sciences, Rokietnicka 5D, 60-806 Poznan, Poland
| | - Jeremiasz K Koper
- Institute of Materials Science and Engineering, Poznan University of Technology, Jana Pawla II 24, 61-138 Poznan, Poland
| | - Aleksandra Romaniuk
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355 Poznan, Poland
| | - Natalia Lipinska
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355 Poznan, Poland
| | - Jarosław Jakubowicz
- Institute of Materials Science and Engineering, Poznan University of Technology, Jana Pawla II 24, 61-138 Poznan, Poland
| | - Mieczyslawa U Jurczyk
- Division Mother's and Child's Health, Poznan University of Medical Sciences, Polna 33, 60-535 Poznan, Poland
| |
Collapse
|
5
|
Nurliyana MR, Sahdan M, Wibowo K, Muslihati A, Saim H, Ahmad S, Sari Y, Mansor Z. The Detection Method ofEscherichia coliin Water Resources: A Review. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/995/1/012065] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
6
|
Küchler EC, Tannure PN, Falagan-Lotsch P, Lopes TS, Granjeiro JM, Amorim LMF. Buccal cells DNA extraction to obtain high quality human genomic DNA suitable for polymorphism genotyping by PCR-RFLP and Real-Time PCR. J Appl Oral Sci 2013; 20:467-71. [PMID: 23032210 PMCID: PMC3881822 DOI: 10.1590/s1678-77572012000400013] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Accepted: 09/30/2011] [Indexed: 02/05/2023] Open
Abstract
Objective The aim of this study was to evaluate, by PCR-RFLP and Real-time PCR, the yield
and quality of genomic DNA collected from buccal cells by mouthwash after
different storage times at room temperature. Material and Methods A group of volunteers was recruited to collect buccal cells using a mouthwash
solution. The collected solution was divided into 3 tubes, one tube were used for
immediate extraction and the remaining received ethanol and were kept at room
temperature for 4 and 8 days followed by DNA extraction. The concentration, purity
and integrity of the DNA were determined using spectrophotometry and
electrophoresis. DNA quality differences among the three incubation times were
also evaluated for genotyping EGF +61 A/G (rs 4444903) polymorphism by PCR-RFLP
and for IRF6 polymorphism (rs 17015215) using Real-Time PCR. Results There was no significant difference of DNA yield (p=0.75) and purity (p=0.86)
among the three different incubation times. DNA obtained from different incubation
times presented high-molecular weight. The PCR-RFLP and Real time PCR reactions
were successfully performed for all DNA samples, even those extracted after 8 days
of incubation. All samples genotyped by Real-Time PCR presented C allele for IRF6
gene polymorphism (homozygous: CC; heterozygous: CT) and the C allele was used as
a reference for Ct values. The samples presented the same genotype for the
different times in both techniques. Conclusion We demonstrated that the method described herein is simple and low cost, and that
DNA can be extracted and PCR amplified after storage in mouthwash solution at room
temperature.
Collapse
Affiliation(s)
- Erika Calvano Küchler
- Cell Therapy Center, Unit of Clinical Research, University Hospital Antonio Pedro, Fluminense Federal University, Niteroi, RJ, Brazil
| | | | | | | | | | | |
Collapse
|
7
|
Botelho MA, Martins JG, Ruela RS, Queiroz DB, Ruela WS. Nanotechnology in ligature-induced periodontitis: protective effect of a doxycycline gel with nanoparticules. J Appl Oral Sci 2010; 18:335-42. [PMID: 20835566 PMCID: PMC5349078 DOI: 10.1590/s1678-77572010000400003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Accepted: 02/16/2010] [Indexed: 12/11/2022] Open
Abstract
Objectives The aim of this study was to test the efficacy of a locally applied 8.5%
nanostructured doxycycline (DOX) gel in preventing alveolar bone loss in
experimental periodontal disease (ePD) in rats by using the tapping mode atomic
force microscopy (AFM). Material and Methods ePD was induced in 24 Wistar rats. Animals were treated with the doxycycline gel
topically, immediately after ePD induction, and 3 times a day during 11 days. Four
groups (n=6) were formed as follows: Naïve group (animals not subjected to
ePD nor treated); non-treated (NT) group (animals subjected to ePD, but not
treated); vehicle gel (VG) group (animals subjected to ePD and treated with
topical gel vehicle); and DOX group (test group): animals subjected to ePD and
treated with the 8.5% DOX gel. In order to investigate topographical changes in
histological sections, a novel simple method was used for sample preparation, by
etching sections from paraffin-embedded specimens with xylol. Results Comparing the AFM images, several grooves were observed on the surface of the
alveolar bone and other periodontal structures in the NT and VG groups, with
significantly greater depths when compared to the DOX group (p<0.05). Conclusions Periodontal structures were brought into high relief confirming to be a simple and
costeffective method for AFM imaging with ultrastructural resolution. The
doxycycline gel was able to afford periodontal surface preservation, with flatter
grooves.
Collapse
|
8
|
da Silva RHA, Sales-Peres A, de Oliveira RN, de Oliveira FT, Sales-Peres SHDC. Use of DNA technology in forensic dentistry. J Appl Oral Sci 2009; 15:156-61. [PMID: 19089123 PMCID: PMC4327460 DOI: 10.1590/s1678-77572007000300002] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2006] [Accepted: 12/11/2006] [Indexed: 11/21/2022] Open
Abstract
The established importance of Forensic Dentistry for human identification, mainly when there is little remaining material to perform such identification (e.g., in fires, explosions, decomposing bodies or skeletonized bodies), has led dentists working with forensic investigation to become more familiar with the new molecular biology techniques. The currently available DNA tests have high reliability and are accepted as legal proofs in courts. This article presents a literature review referring to the main studies on Forensic Dentistry that involve the use of DNA for human identification, and makes an overview of the evolution of this technology in the last years, highlighting the importance of molecular biology in forensic sciences.
Collapse
|
9
|
Valones MAA, Guimarães RL, Brandão LAC, de Souza PRE, de Albuquerque Tavares Carvalho A, Crovela S. Principles and applications of polymerase chain reaction in medical diagnostic fields: a review. Braz J Microbiol 2009; 40:1-11. [PMID: 24031310 PMCID: PMC3768498 DOI: 10.1590/s1517-83822009000100001] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2008] [Accepted: 02/25/2009] [Indexed: 01/19/2023] Open
Abstract
Recent developments in molecular methods have revolutionized the detection and characterization of microorganisms in a broad range of medical diagnostic fields, including virology, mycology, parasitology, microbiology and dentistry. Among these methods, Polymerase Chain Reaction (PCR) has generated great benefits and allowed scientific advancements. PCR is an excellent technique for the rapid detection of pathogens, including those difficult to culture. Along with conventional PCR techniques, Real-Time PCR has emerged as a technological innovation and is playing an ever-increasing role in clinical diagnostics and research laboratories. Due to its capacity to generate both qualitative and quantitative results, Real-Time PCR is considered a fast and accurate platform. The aim of the present literature review is to explore the clinical usefulness and potential of both conventional PCR and Real-Time PCR assays in diverse medical fields, addressing its main uses and advances.
Collapse
|