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https://www.readbyqxmd.com/read/28628558/genetics-of-pleiotropic-effects-of-dexamethasone
#1
Laura B Ramsey, Stan Pounds, Cheng Cheng, Xueyuan Cao, Wenjian Yang, Colton Smith, Seth E Karol, Chengcheng Liu, John C Panetta, Hiroto Inaba, Jeffrey E Rubnitz, Monika L Metzger, Raul C Ribeiro, John T Sandlund, Sima Jeha, Ching-Hon Pui, William E Evans, Mary V Relling
OBJECTIVES: Glucocorticoids such as dexamethasone have pleiotropic effects, including desired antileukemic, anti-inflammatory, or immunosuppressive effects, and undesired metabolic or toxic effects. The most serious adverse effects of dexamethasone among patients with acute lymphoblastic leukemia are osteonecrosis and thrombosis. To identify inherited genomic variation involved in these severe adverse effects, we carried out genome-wide association studies (GWAS) by analyzing 14 pleiotropic glucocorticoid phenotypes in 391 patients with acute lymphoblastic leukemia...
June 16, 2017: Pharmacogenetics and Genomics
https://www.readbyqxmd.com/read/28614996/myeloma-patients-genes-increase-risk-for-osteonecrosis-of-the-jaw
#2
Melody Becnel, Elisabet Esteve Manasanch
No abstract text is available yet for this article.
June 14, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28604257/genetic-factors-related-with-early-onset-of-osteonecrosis-of-the-jaw-in-patients-with-multiple-myeloma-under-zoledronic-acid-therapy
#3
Efstathios Kastritis, Pelagia Melea, Tina Bagratuni, Ioannis Melakopoulos, Maria Gavriatopoulou, Maria Roussou, Magdalini Migkou, Evangelos Eleutherakis-Papaiakovou, Evangelos Terpos, Meletios A Dimopoulos
Specific genetic polymorphisms (SNPs) have been correlated with the development of bisphosphonate-related osteonecrosis of the jaw (BRONJ) in small series. We screened 140 myeloma patients (36 patients with and 104 without BRONJ) for the presence of previously identified SNPs in PPARG and CYP2C8 genes. All the patients received exclusively zolendronic acid (ZA) therapy and were followed prospectively for BRONJ. SNPs in both genes were associated with a higher risk of development of early BRONJ, occurring within less than 2 years of ZA therapy (59% vs...
June 11, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28543357/associations-of-tnf-%C3%AE-238-a-g-and-il-10-1082-g-a-genetic-polymorphisms-with-the-risk-of-nonfh-in-the-chinese-population
#4
Biao-Fang Wei, Zhi Feng, Wei Wei, Xiao Chen
The study aims to explore the roles of common polymorphisms of TNF-α (-238 A/G and -308 A/G) and IL-10 (-819 T/C and -1082 G/A) genes in the risk of non-traumatic osteonecrosis of the femoral head (NONFH). One-hundred and forty-seven NONFH patients and 135 healthy individuals were selected as the case and control groups. qRT-PCR and Western blotting techniques detected mRNA as well as protein expressions of TNF-α and IL-10 of each genotype in both the case and control groups. The GA genotype and the A allele of TNF-α -238 A/G were higher in the case group than in the control group...
May 24, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28514285/association-of-abcb1-c3435t-polymorphism-with-the-susceptibility-to-osteonecrosis-of-the-femoral-head-a-meta-analysis
#5
REVIEW
Yu Zhang, Hui Xie, Dewei Zhao, Benjie Wang, Lei Yang, Qingyu Meng
BACKGROUND AND OBJECTIVE: The exploration for the etiology of osteonecrosis of the femoral head (ONFH) has got some promising findings, but the morbidity of ONFH is still not under control. The C3435T polymorphism of ATP-binding cassette subfamily B member 1 (ABCB1) gene has been reported to possess significant influence on ONFH onset, but relevant outcomes remain conflicting rather than conclusive. Therefore, a meta-analysis was useful to pool these results together for a more reliable conclusion...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28498798/differential-expression-of-mir-195-5p-in-collapse-of-steroid-induced-osteonecrosis-of-the-femoral-head
#6
Pengfei Li, Pei Zhai, Zengjie Ye, Peng Deng, Yueguang Fan, Yirong Zeng, Zhihui Pang, Jianchun Zeng, Jie Li, Wenjun Feng
BACKGROUND: Femoral head collapse is a key reference point for determining a treatment regimen of femoral head osteonecrosis. However, there are no effective preventive measures and the efficacy of hip-preserving surgery is unsatisfactory due to the unclear mechanism of collapse. This study aimed to identify and validate miRNAs differentially expressed in collapse and non-collapse areas of the osteonecrotic femoral head, and to predict the target genes and pathways of these miRNAs. RESULTS: Nine samples passed the quality control test...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422712/combination-analysis-of-nos3-abcb1-and-il23r-polymorphisms-with-alcohol-induced-osteonecrosis-of-the-femoral-head-risk-in-chinese-males
#7
Yuan Wang, Xuejun Yang, Jianping Shi, Yan Zhao, Linlin Pan, Jinqiu Zhou, Guoqiang Wang, Jianzhong Wang
BACKGROUND: Common variants of multiple genes played a crucial role in osteonecrosis of the femoral head (ONFH) onset which was proved by many previous reports. We hypothesized that polymorphisms in NOS3, ABCB1 and IL23R were related to individual differences in alcohol sensitivity and the development of alcohol-induced ONFH. METHODS: In this case-control study, we evaluated 8 SNPs in three genes in the Chinese Han population including 355 male cases and 355 healthy male controls...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415829/association-between-alcohol-induced-osteonecrosis-of-femoral-head-and-risk-variants-of-mmps-in-han-population-based-on-a-case-control-study
#8
Jianzhong Wang, Xugang Shi, Hua Yang, Jieli Du, Yongri Ouyang, Hong Wang, Tianbo Jin, Chao Chen
The study aimed to evaluate the association between MMP gene superfamily and alcohol-induced osteonecrosis of femoral head (alcohol-induced ONFH) risk given its high prevalence, poor therapeutic effect, and serious clinical prognosis. 308 subjects (mean age, 49.47 years; males, 64.0%) who participated in our control group and 300 alcohol-induced ONFH patients (mean age, 43.29 years; males, 99.7%) formed the case group was enrolled to estimate by statistical analysis. We selected 23 single nucleotide polymorphisms (SNPs) from MMPs, and performed the chi-squared test, Fisher's exact test, t-test and genetic model analyses...
March 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415692/novel-akt-activator-sc-79-is-a-potential-treatment-for-alcohol-induced-osteonecrosis-of-the-femoral-head
#9
Yi-Xuan Chen, Shi-Cong Tao, Zheng-Liang Xu, Wen-Jing Yin, Yue-Lei Zhang, Jun-Hui Yin, You-Shui Gao, Chang-Qing Zhang
Alcohol is a leading risk factor for osteonecrosis of the femoral head (ONFH). We explored the molecular mechanisms underlying alcohol-induced ONFH and investigated the protective effect of the novel Akt activator SC-79 against this disease. We found that ethanol inhibited expression of the osteogenic genes RUNX2 and OCN, downregulated osteogenic differentiation, impaired the recruitment of Akt to the plasma membrane, and suppressed Akt phosphorylation at Ser473, thereby inhibiting the Akt/GSK3β/β-catenin signaling pathway in bone mesenchymal stem cells...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28346829/polymorphisms-in-the-glucocorticoid-receptor-gene-and-associations-with-glucocorticoid-induced-avascular-osteonecrosis-of-the-femoral-head
#10
Zhanqin Zhao, Yun Xue, Dun Hong, Hongjun Zhang, Zhigang Hu, Shunwu Fan, Haixiao Chen
AIMS: Individual sensitivity to glucocorticoid (GC) therapy might play a pivotal role in the development of GC-induced avascular necrosis of the femoral head (GANFH). In a growing number of studies, common polymorphisms of the glucocorticoid receptor gene (nuclear receptor subfamily 3 group C member 1 [NR3C1]) have been associated with variability in the individual sensitivity to GCs. However, whether the NR3C1 gene polymorphisms actually influence the susceptibility of GANFH remains unknown...
May 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28276593/association-between-sickle-cell-anemia-and-alpha-thalassemia-reveals-a-high-prevalence-of-the-%C3%AE-3-7-triplication-in-congolese-patients-than-in-worldwide-series
#11
Tite Minga Mikobi, Prosper Tshilobo Lukusa, Michel Ntetani Aloni, Aimé Lumaka, Pierre Zalagile Akilimali, Koenraad Devriendt, Gert Matthijs, Jean-Marie Mbuyi Muamba, Valerie Race
BACKGROUND: Information about the association with alpha thalassemia in sickle cell patients is unknown in the Democratic Republic of Congo. There is very little data on the alpha thalassemia in patients suffering from sickle cell anemia in Central Africa, and their consequences on the clinical expression of the disease. METHODS: A cross-sectional study was conducted in 106 sickle cell patients living in the country's capital Kinshasa. The diagnosis of sickle cell anemia was confirmed with a molecular test using PCR-RFLP (restriction fragment length polymorphism) technique...
March 9, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28207735/long-non-coding-rna-hotair-inhibits-mir-17-5p-to-regulate-osteogenic-differentiation-and-proliferation-in-non-traumatic-osteonecrosis-of-femoral-head
#12
Biaofang Wei, Wei Wei, Baoxiang Zhao, Xiaxia Guo, Song Liu
BACKGROUND AND AIM: The biological functions of non-coding RNAs (ncRNAs) have been widely identified in many human diseases. In the present study, the relationship between long non-coding RNA HOTAIR and microRNA-17-5p (miR-17-5p) and their roles in osteogenic differentiation and proliferation in non-traumatic osteonecrosis of femoral head (ONFH) were investigated. METHODS: The expression levels of HOTAIR and miR-17-5p in the mesenchymal stem cells (MSCs) derived from patients with non-traumatic ONFH and osteoarthritis (OA) were examined by real-time PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28159588/bacterial-diversity-in-medication-related-osteonecrosis-of-the-jaw
#13
Fredrik Hallmer, Tore Bjørnland, Gunilla Andersson, Jonas P Becktor, Anne K Kristoffersen, Morten Enersen
OBJECTIVE: The aim was to study the association between microflora and medication-related osteonecrosis of the jaw (MRONJ) by using culture-independent molecular techniques to detect bacteria in necrotic bone lesions. STUDY DESIGN: Included were 18 consecutive patients with MRONJ, 10 with osteoporosis and 8 cancer patients. Bone biopsies were retrieved from the center of the necrotic bone and from visually healthy bone, and 16 S rRNA gene fragments from bacterial DNA were amplified with polymerase chain reaction...
December 7, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28139685/skeletal-site-specific-effects-of-zoledronate-on-in-vivo-bone-remodeling-and-in-vitro-bmscs-osteogenic-activity
#14
Xue Gong, Wanlu Yu, Hang Zhao, Jiansheng Su, Qing Sheng
Bisphosphonate-related osteonecrosis of the jaw (BRONJ) has been associated with long-term oral or intravenous administration of nitrogen-containing bisphosphonates (BPs). However, the pathogenesis of BRONJ remains unknown, and definitively effective treatment has not yet been established. Bisphosphonate-related osteonecrosis (BRON) tends to occur in maxillofacial bones. Why this occurs is still unclear. Here we show that zoledronate (Zol) treatment suppresses alveolar bone remodeling after tooth typical clinical and radiographic hallmarks of the human BRONJ, whereas enhances peripheral bone quantity in bone remodeling following injury in the same individuals, shown as increased cortical bone thickness, increased trabecular bone formation and accelerated bone defect repair...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28106828/bajijiasu-abrogates-osteoclast-differentiation-via-the-suppression-of-rankl-signaling-pathways-through-nf-%C3%AE%C2%BAb-and-nfat
#15
Guoju Hong, Lin Zhou, Xuguang Shi, Wei He, Haibin Wang, Qiushi Wei, Peng Chen, Longkai Qi, Jennifer Tickner, Li Lin, Jiake Xu
Pathological osteolysis is commonly associated with osteoporosis, bone tumors, osteonecrosis, and chronic inflammation. It involves excessive resorption of bone matrix by activated osteoclasts. Suppressing receptor activator of NF-κB ligand (RANKL) signaling pathways has been proposed to be a good target for inhibiting osteoclast differentiation and bone resorption. Bajijiasu-a natural compound derived from Morinda officinalis F. C. How-has previously been shown to have anti-oxidative stress property; however, its effect and molecular mechanism of action on osteoclastogenesis and bone resorption remains unclear...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28105733/vitamin-d-supplementation-for-sickle-cell-disease
#16
REVIEW
Htoo Htoo Kyaw Soe, Adinegara Bl Abas, Nan Nitra Than, Han Ni, Jaspal Singh, Abdul Razzak Bin Mohd Said, Ifeyinwa Osunkwo
BACKGROUND: Sickle cell disease is a genetic chronic haemolytic and pro-inflammatory disorder. The clinical manifestations of sickle cell disease result from the presence of mutations on the beta globin genes that generate an abnormal haemoglobin product (called haemoglobin S) within the red blood cell. Sickle cell disease can lead to many complications such as acute chest syndrome, stroke, acute and chronic bone complications (including painful vaso-occlusive crisis, osteomyelitis, osteonecrosis and osteoporosis)...
January 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28009825/neuropeptide-y1-receptor-regulates-glucocorticoid-induced-inhibition-of-osteoblast-differentiation-in-murine-mc3t3-e1-cells-via-erk-signaling
#17
Wei Yu, Chao Zhu, Wenning Xu, Leisheng Jiang, Shengdan Jiang
High dose glucocorticoid (GC) administration impairs the viability and function of osteoblasts, thus causing osteoporosis and osteonecrosis. Neuropeptide Y1 receptor (Y1 receptor) is expressed in bone tissues and cells, and regulates bone remodeling. However, the role of Y1 receptor in glucocorticoid-induced inhibition of osteoblast differentiation remains unknown. In the present study, osteoblastic cell line MC3T3-E1 cultured in osteogenic differentiation medium was treated with or without of 10(-7) M dexamethasone (Dex), Y1 receptor shRNA interference, Y1 receptor agonist [Leu(31), Pro(34)]-NPY, and antagonist BIBP3226...
December 21, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28000841/genome-wide-association-scans-for-idiopathic-osteonecrosis-of-the-femoral-head-in-a-korean-population
#18
Seung-Hoon Baek, Kang-Il Kim, Kyung-Sik Yoon, Tae-Ho Kim, Shin-Yoon Kim
Osteonecrosis of the femoral head (ONFH) is a multifactorial disease and is associated with genetic predisposition, and exposure to certain risk factors. In particular, idiopathic ONFH in twins and the clustering of cases in families have indicated that genetic factors are involved. However, the majority of cases of ONFH are sporadic and various studies have demonstrated that differences in the study design and/or the ethnic groups analyzed leads to different results. The present study performed one of the first genome‑wide association studies to identify genetic loci that may increase the risk of idiopathic ONFH...
February 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28000662/hematopoietic-stem-cells-in-neural-crest-derived-bone-marrow
#19
Nan Jiang, Mo Chen, Guodong Yang, Lusai Xiang, Ling He, Thomas K Hei, Gregory Chotkowski, Dennis P Tarnow, Myron Finkel, Lei Ding, Yanheng Zhou, Jeremy J Mao
Hematopoietic stem cells (HSCs) in the endosteum of mesoderm-derived appendicular bones have been extensively studied. Neural crest-derived bones differ from appendicular bones in developmental origin, mode of bone formation and pathological bone resorption. Whether neural crest-derived bones harbor HSCs is elusive. Here, we discovered HSC-like cells in postnatal murine mandible, and benchmarked them with donor-matched, mesoderm-derived femur/tibia HSCs, including clonogenic assay and long-term culture. Mandibular CD34 negative, LSK cells proliferated similarly to appendicular HSCs, and differentiated into all hematopoietic lineages...
December 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27994198/osteoprotegerin-polymorphisms-are-associated-with-alcohol-induced-osteonecrosis-of-femoral-head-in-chinese-han-population-from-henan-province
#20
Yizhou Li, Yongchang Guo, Quanjian Wang, Yongri Ouyang, Yuju Cao, Tianbo Jin, Jianzhong Wang
Alcohol-induced osteonecrosis of femoral head (ONFH) is one of the most important pathogenesis of nontraumatic ONFH. However, its pathogenesis mechanism is still unknown. Osteoprotegerin (OPG) has been implicated in multiple functions including blocking osteoclast maturation, controlling vascular calcifications, promoting tumour growth and metastasis. This study is focussed on OPG gene polymorphisms associated with alcohol-induced ONFH. A total of 509 participants (209 patients and 300 normal individuals) were recruited, and we selected 13 single-nucleotide polymorphisms (SNPs) to evaluate the association between genetic susceptibility variants and alcohol-induced ONFH by using the χ(2) test and genetic model analysis...
December 2016: Journal of Genetics
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