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https://www.readbyqxmd.com/read/29468541/using-methylation-specific-pcr-to-study-rb1-promoter-hypermethylation
#1
Thaís M McCormick, Maria Da Glória Da C Carvalho
It has increasingly been considered crucial the understanding of DNA methylation of Tumor Suppressor Gene (TSG) promoters, such as that of retinoblastoma 1 gene (RB1), and its role during carcinogenesis. We present a detailed and optimized protocol of the methylation-specific PCR (MSP) technique to study RB1 gene promoter hypermethylation.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29458365/temporal-changes-in-genetic-diversity-of-msp-1-msp-2-and-msp-3-in-plasmodium-falciparum-isolates-from-grande-comore-island-after-introduction-of-act
#2
Bo Huang, Fei Tuo, Yuan Liang, Wanting Wu, Guangchao Wu, Shiguang Huang, Qirun Zhong, Xin-Zhuan Su, Hongying Zhang, Mingqiang Li, Affane Bacar, Kamal Said Abdallah, Ahamada M S A Mliva, Qi Wang, Zhaoli Yang, Shaoqin Zheng, Qin Xu, Jianping Song, Changsheng Deng
BACKGROUND: Malaria is still one of the serious public health problems in Grande Comore Island, although the number of annual cases has been greatly reduced in recent years. A better understanding of malaria parasite population diversity and transmission dynamics is critical for assessing the effectiveness of malaria control measures. The objective of this study is to investigate temporal changes in genetic diversity of Plasmodium falciparum populations and multiplicity of infection (MOI) in Grande Comore 10 years after introduction of ACT...
February 20, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29449053/genetic-and-epigenetic-alterations-in-the-tumour-tumour-margins-and-normal-buccal-mucosa-of-patients-with-oral-cancer
#3
N Eljabo, N Nikolic, J Carkic, D Jelovac, M Lazarevic, N Tanic, J Milasin
Despite adequate surgical resection, oral squamous cell carcinoma (OSCC) shows a high rate of recurrence and metastasis, which could be explained by the presence of molecular alterations in seemingly normal tumour margins and the entire oral mucosa. The aims of this study were (1) to assess the presence of gene amplification (c-Myc and HER2) and promoter methylation (p14 and p16) in the tumours, tumour margins, and unaffected oral mucosa of 40 OSCC patients, and (2) to evaluate the possibility of using these alterations as prognostic markers...
February 12, 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29444078/multiplex-serology-for-impact-evaluation-of-bed-net-distribution-on-burden-of-lymphatic-filariasis-and-four-species-of-human-malaria-in-northern-mozambique
#4
Mateusz M Plucinski, Baltazar Candrinho, Geraldo Chambe, João Muchanga, Olinda Muguande, Graça Matsinhe, Guidion Mathe, Eric Rogier, Timothy Doyle, Rose Zulliger, James Colborn, Abu Saifodine, Patrick Lammie, Jeffrey W Priest
BACKGROUND: Universal coverage with long-lasting insecticidal nets (LLINs) is a primary control strategy against Plasmodium falciparum malaria. However, its impact on the three other main species of human malaria and lymphatic filariasis (LF), which share the same vectors in many co-endemic areas, is not as well characterized. The recent development of multiplex antibody detection provides the opportunity for simultaneous evaluation of the impact of control measures on the burden of multiple diseases...
February 14, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29398759/tubercular-mycobacterial-spindle-cell-pseudotumour-a-case-report
#5
Deba Prasad Dhibar, Kamal Kant Sahu, Surjit Singh, Amanjit Bal, Abhijit Chougale, Varun Dhir
Pseudotumour is a benign inflammatory lesion. Mycobacterial spindle cell pseudotumour (MSP) is a rare pseudotumour. It is a benign proliferation of spindle-shaped histiocytes containing acid-fast mycobacterium, commonly reported in immunocompromised patients. MSP is usually associated with mycobacterium avium complex (MAC). Here, we present the case of a 38-year-old gentleman with acquired immune deficiency syndrome (AIDS) who presented with low-grade fever for 1-month duration. Clinically, he had generalised lymphadenopathy...
January 2018: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29389913/shikonin-inhibites-migration-and-invasion-of-thyroid-cancer-cells-by-downregulating-dnmt1
#6
Yue Zhang, Bin Sun, Zhi Huang, Dai-Wei Zhao, Qingfan Zeng
BACKGROUND Shikonin is a component of Chinese herbal medicine. The aim of this study was to investigate the effects of shikonin on cell migration of papillary thyroid cancer cells of the TPC-1 cell line in vitro and expression levels of the phosphate and tensin homolog deleted on chromosome 10 (PTEN) and DNA methyltransferase 1 (DNMT1) genes. MATERIAL AND METHODS The Cell Counting Kit-8 (CCK-8) assay was performed to evaluate the proliferation of TPC-1 papillary thyroid cancer cells, and the normal thyroid cells, HTori-3, in vitro...
February 1, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29364434/global-and-gene-specific-dna-methylation-and-hydroxymethylation-in-human-skin-exposed-and-not-exposed-to-sun-radiation
#7
Mikaelly Batista da Silva, Alanne Rayssa da Silva Melo, Ludimila de Araújo Costa, Haline Barroso, Naila Francis Paulo de Oliveira
BACKGROUND: epigenomes can be influenced by environmental factors leading to the development of diseases. OBJECTIVE: To investigate the influence of sun exposure on global DNA methylation and hydroxymethylation status and at specific sites of the miR-9-1, miR-9-3 and MTHFR genes in skin samples of subjects with no history of skin diseases. METHODS: Skin samples were obtained by punch on sun-exposed and sun-protected arm areas from 24 corpses of 16-89 years of age...
November 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29355145/molecular-characterization-of-plasmodium-falciparum-in-arunachal-pradesh-from-northeast-india-based-on-merozoite-surface-protein-1-glutamate-rich-protein
#8
Nilanju Pran Sarmah, Kishore Sarma, Dibya Ranjan Bhattacharyya, Ali Sultan, Devendra Bansal, Neeru Singh, Praveen K Bharti, Hargobinder Kaur, Rakesh Sehgal, Pradyumna Kishore Mohapatra, Jagadish Mahanta
BACKGROUND & OBJECTIVES: Northeast (NE) India is one of the high endemic regions for malaria with a preponderance of Plasmodium falciparum, resulting in high morbidity and mortality. The P. falciparum parasite of this region showed high polymorphism in drug-resistant molecular biomarkers. However, there is a paucity of information related to merozoite surface protein 1 (msp-1) and glutamate-rich protein (glurp) which have been extensively studied in various parts of the world. The present study was, therefore, aimed at investigating the genetic diversity of P...
September 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29340524/efficacy-of-removal-of-cariogenic-bacteria-and-carious-dentin-by-ablation-using-different-modes-of-er-yag-lasers
#9
A Baraba, L Kqiku, D Gabrić, Ž Verzak, K Hanscho, I Miletić
The primary objective of this in vitro study was to evaluate the efficiency of removal of cariogenic bacteria and carious dentin by ablation using two lasers: fluorescence-feedback controlled (FFC) Er:YAG laser and different pulses of Er:YAG laser based on variable square pulse technology (VSPt). The secondary objective was to measure the temperature during laser ablation of carious tissue. Seventy-two extracted human molars were used in this study. Sixty teeth with carious dentin were randomly divided into four experimental groups according to the treatment for caries removal: group 1: 400 µs (FFC group); group 2: super short pulse (SSP group, 50 µs pulse); group 3: medium short pulse (MSP group, 100 µs pulse); group 4: short pulse (SP group, 300 µs pulse) and one positive control group with no treatment...
January 11, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29301521/training-the-next-generation-of-physician-researchers-vanderbilt-medical-scholars-program
#10
Abigail M Brown, Teresa M Chipps, Tebeb Gebretsadik, Lorraine B Ware, Jessica Y Islam, Luke R Finck, Joey Barnett, Tina V Hartert
BACKGROUND: As highlighted in recent reports published by the Physician-Scientist Workforce Working Group at the National Institutes of Health, the percentage of physicians conducting research has declined over the past decade. Various programs have been put in place to support and develop current medical student interest in research to alleviate this shortage, including The Vanderbilt University School of Medicine Medical Scholars Program (MSP). This report outlines the long-term program goals and short-term outcomes on career development of MSP alumni, to shed light on the effectiveness of research training programs during undergraduate medical training to inform similar programs in the United States...
January 4, 2018: BMC Medical Education
https://www.readbyqxmd.com/read/29285776/association-of-the-cyp17-msp-ai-t-34c-and-cyp19-codon-39-trp-arg-polymorphisms-with-susceptibility-to-acne-vulgaris
#11
F Chamaie-Nejad, S Saeidi, F Najafi, A Ebrahimi, Z Rahimi, E Shakiba, Z Rahimi
The aim of this study was to detect the association of the cytochrome P450 (CYP) 17 T-34C and CYP19 T<C polymorphisms with the risk of acne vulgaris (AV). The study enrolled 198 patients with AV (mild, moderate and severe) and 195 unrelated age-matched healthy controls from western Iran who had Kurdish ethnic background. The presence of the CYP17 TC genotype significantly increased the risk of mild, moderate and severe AV by 2.68, 2.28 and 2.94 times, respectively, while the presence of the CYP19 TC genotype significantly elevated the risk of overall AV and mild AV by 2...
December 28, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29284708/esr1-methylation-a-liquid-biopsy-based-epigenetic-assay-for-the-follow-up-of-patients-with-metastatic-breast-cancer-receiving-endocrine-treatment
#12
Sofia Mastoraki, Areti Strati, Eleni Tzanikou, Maria Chimonidou, Helen Politaki, Alexandra Voutsina, Amanda Psyrri, Vasilis Georgoulias, Evi S Lianidou
PURPOSE: Liquid biopsy provides real-time monitoring of tumor evolution and response to therapy through analysis of CTCs and plasma-ctDNA. ESR1 epigenetic silencing potentially affects response to endocrine treatment. We evaluated ESR1 methylation in CTCs and paired plasma-ctDNA. We evaluated ESR1 methylation in CTCs and paired plasma-ctDNA as a potential biomarker for response to everolimus/exemestane treatment. EXPERIMENTAL DESIGN: A highly sensitive and specific real-time MSP assay for ESR1 methylation was developed and validated in: a) 65 primary breast tumors (FFPEs), b) EpCAM+ CTC-fractions (122 patients and 30 healthy donors; HD), c) plasma-ctDNA (108 patients and 30HD), d) in CTCs (CellSearch®) and in paired plasma-ctDNA for 58 BrCa patients...
December 28, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29279840/pro-inflammatory-cytokine-response-and-genetic-diversity-in-merozoite-surface-protein-2-of-plasmodium-falciparum-isolates-from-nigeria
#13
Olusola Ajibaye, Akinniyi A Osuntoki, Albert Ot Ebuehi, Bamidele A Iwalokun, Emmanuel O Balogun, Kathleen N Egbuna
Background: Polymorphisms in Plasmodium falciparum merozoite surface protein-2 (msp-2) and associated parasite genetic diversity which varies between malaria-endemic regions remain a limitation in malaria vaccine development. Pro-inflammatory cytokines are important in immunity against malaria, understanding the influence of genetic diversity on cytokine response is important for effective vaccine design. Methods: P. falciparum isolates obtained from 300 Nigerians with uncomplicated falciparum malaria at Ijede General Hospital, Ijede (IJE), General Hospital Ajeromi, Ajeromi (AJE) and Saint Kizito Mission Hospital, Lekki, were genotyped by nested polymerase chain reaction of msp-2 block 3 while ELISA was used to determine the pro-inflammatory cytokine response to describe the genetic diversity of P...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29275584/-dna-methylation-modification-of-brms1-in-triple-negative-breast-cancer-and-its-correlation-with-tumor-metastasis
#14
J Xia, Z D Lü, P H Zhou, S C Cui, B Kong, D Liu, S S Long, X H Zhang, J J Zhao
Objective: To investigate the effect of methylation status of breast cancer metastasis suppressor gene 1 (BRMS1) on the expression of breast cancer and the biological behavior of cancer cells in triple-negative breast cancer (TNBC). Methods: The expression of BRMS1 in TNBC tissues and corresponding non-malignant tissues and its relationship with clinicopathological parameters were detected by immunohistochemistry. The mRNA and protein expression of BRMS1 in normal breast epithelial cells and TNBC cells were detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting...
November 28, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29251798/lateral-ventricular-volume-measurement-by-3d-mr-hydrography-in-fetal-ventriculomegaly-and-normal-lateral-ventricles
#15
Si-Xiu Zhao, Yun-Hua Xiao, Fu-Rong Lv, Zhi-Wei Zhang, Bo Sheng, Hong-Li Ma
BACKGROUND: In fetuses with prenatal ventriculomegaly (VM), ventricular volume on MRI has been shown to correlate with poor postnatal outcomes and in utero death. 3D magnetic resonance hydrography (MRH) has been widely used for MR cholangiopancreatography. PURPOSE: To investigate the reliability of 3D MRH for lateral ventricular volume measurement in fetuses with VM and normal lateral ventricles, using manual multisection planimetry (MSP) as a reference standard...
December 18, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29245188/the-unmet-needs-of-aboriginal-australians-with-musculoskeletal-pain-a-mixed-method-systematic-review
#16
Ivan B Lin, Samantha Bunzli, Donna B Mak, Charmaine Green, Roger Goucke, Juli Coffin, Peter B O'Sullivan
OBJECTIVE: Musculoskeletal pain (MSP) conditions are the biggest cause of disability and internationally, Indigenous peoples experience a higher burden. There are conflicting reports about Aboriginal Australians and MSP. We conducted a systematic review to describe the prevalence, associated factors, impacts, care access, health care experiences, and factors associated with MSP among Aboriginal Australians. METHODS: A systematic search of quantitative and qualitative scientific and grey literature (PROSPERO number: CRD42016038342)...
December 15, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29234405/qingchang-wenzhong-decoction-attenuates-dss-induced-colitis-in-rats-by-reducing-inflammation-and-improving-intestinal-barrier-function-via-upregulating-the-msp-ron-signalling-pathway
#17
Tangyou Mao, Junxiang Li, Lijuan Liu, Weihan Zhao, Yuyue Liu, Kangli Gao, Yi Guo, Tianhong Xie, Ningfei Li, Rui Shi
Ulcerative colitis (UC) is a chronic, nonspecific, inflammatory disease for which an effective treatment is lacking. Our previous study found that Qingchang Wenzhong Decoction (QCWZD) can significantly improve the clinical symptoms of UC and ameliorate dextran sulphate sodium- (DSS-) induced ulcerative colitis in rats by downregulating the IP10/CXCR3 axis-mediated inflammatory response. The purpose of the present study was to further explore the mechanism of QCWZD for UC in rats models, which were established by 7-day administration of 4...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29228451/rg108-induces-the-apoptosis-of-endometrial-cancer-ishikawa-cell-lines-by-inhibiting-the-expression-of-dnmt3b-and-demethylation-of-hmlh1
#18
L Yang, J Hou, X-H Cui, L-N Suo, Y-W Lv
OBJECTIVE: The effects of DNA methyltransferase (DNMT) inhibitor RG108 on the proliferation and apoptosis of endometrial cancer was investigated, and whether its mechanism was related to the inhibition of DNMT3B, thereby affecting the human mutL homolog 1 (hMLH1) methylation status and its expression, was further studied. MATERIALS AND METHODS: Culture of human endometrial cancer Ishikawa cell lines: cells grew adhering to the wall in Roswell Park Memorial Institute-1640 (RPMI-1640) medium (supplemented with 10% fetal bovine serum (FBS) and 2 mM L-glutamic acid)...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29224159/quantitation-of-dna-methylation-by-quantitative-multiplex-methylation-specific-pcr-qm-msp-assay
#19
Mary Jo Fackler, Saraswati Sukumar
The defining feature of the Quantitative Multiplex Methylation-Specific PCR (QM-MSP) method to sensitively quantify DNA methylation is the two-step PCR approach for a multiplexed analysis of a panel of up to 12 genes in clinical samples with minimal quantities of DNA. In the first step, for up to 12 genes tested, one pair of gene-specific primers (forward and reverse) amplifies the methylated and unmethylated copies of the same gene simultaneously and in multiplex, in one PCR reaction. This methylation-independent amplification step produces amplicons of up to 109 copies per μL after 36 cycles of PCR...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29220586/co-occurring-psychosocial-problems-and-multiple-sexual-partners-among-men-who-have-sex-with-men-in-shanghai-china-a-syndemic-approach
#20
Zezhou Wang, Xu Zhao, Zhan Zhang, Mengyun Luo, Qiuming Shen, Yuanyuan Dong, Ying Wang, Yong Cai
We aimed to apply syndemic theory to verify the association and reinforcing effects between psychosocial problems and multiple sexual partners (MSP) of men who have sex with men (MSM) in Shanghai, China. A cross-sectional study was conducted among 547 MSM in Shanghai, China using a face-to-face survey. Sociodemographic and psychosocial data were collected, as well as information on MSP and condomless anal sex. In the 6 months prior to the survey, 54.3% of the MSM sample had had MSP. Univariate analysis showed that self-esteem, depression, loneliness, sexual compulsivity, and involuntary subordination (IS) were associated with MSP...
December 8, 2017: Journal of Sex Research
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