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BMC Medical Genetics

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https://www.readbyqxmd.com/read/30413149/enho-rxra-and-lxra-polymorphisms-and-dyslipidaemia-related-comorbidities-and-survival-in-haemodialysis-patients
#1
Alicja E Grzegorzewska, Leszek Niepolski, Monika K Świderska, Adrianna Mostowska, Ireneusz Stolarek, Wojciech Warchoł, Marek Figlerowicz, Paweł P Jagodziński
BACKGROUND: The energy homeostasis-associated gene (ENHO), retinoid X receptor alpha gene (RXRA), and liver X receptor alpha gene (LXRA) are involved in adipogenic/lipogenic regulation. We investigated whether single-nucleotide polymorphisms in these genes (ENHO rs2281997, rs72735260; RXRA rs749759, rs10776909, rs10881578; LXRA rs2279238, rs7120118, rs11039155) are associated with dyslipidaemia, related comorbidities and survival of haemodialysis (HD) patients also tested for T-helper (Th) cell interleukin genes (IL)...
November 9, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30400883/a-novel-slc6a8-mutation-associated-with-intellectual-disabilities-in-a-chinese-family-exhibiting-creatine-transporter-deficiency-case-report
#2
Qin Wang, Jingxin Yang, Yang Liu, Xingping Li, Fuwei Luo, Jiansheng Xie
BACKGROUND: X-linked creatine transporter deficiency (OMIM#300036,CRTR-D) is characterized by cerebral creatine deficiency, intellectual disabilities, severe speech impairment, seizures and behavioral problems. Mutations in the creatine transporter gene SLC6A8, a member of the solute-carrier family 6 mapped to Xq28, have been reported to cause the creatine transporter deficiency. CASE PRESENTATION: The proband presented at 5 yrs. 1 month of age with delays in intellectual and development, seizures and behavioral problems...
November 6, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30376821/nsdhl-containing-duplication-at-xq28-in-a-male-patient-with-autism-spectrum-disorder-a-case-report
#3
Chun-Chun Hu, Yun-Jun Sun, Chun-Xue Liu, Bing-Rui Zhou, Chun-Yang Li, Qiong Xu, Xiu Xu
BACKGROUND: Autism spectrum disorder (ASD) is a neurodevelopmental disorder in which genetics plays a key aetiological role. The gene encoding NAD(P)H steroid dehydrogenase-like protein (NSDHL) is expressed in developing cortical neurons and glia, and its mutation may result in intellectual disability or congenital hemidysplasia. CASE PRESENTATION: An 8-year-old boy presented with a 260-kb NSDHL-containing duplication at Xq28 (151,868,909 - 152,129,300) inherited from his mother...
October 30, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30376817/novel-mef2c-point-mutations-in-chinese-patients-with-rett-like-syndrome-or-non-syndromic-intellectual-disability-insights-into-genotype-phenotype-correlation
#4
Jiaping Wang, Qingping Zhang, Yan Chen, Shujie Yu, Xiru Wu, Xinhua Bao, Yongxin Wen
BACKGROUND: MEF2C (Myocyte-specific enhancer factor 2C) has been associated with neurodevelopmental disorders. This study aimed at delineating the clinical profiles of MEF2C gene mutations. METHODS: In total, 112 Chinese patients with intellectual disability (ID) were recruited, including 44 patients presented with Rett syndrome (RTT) or RTT-like syndrome, and 68 patients with non-syndromic ID. Targeted next-generation sequencing (NGS) was performed. Detailed clinical information was collected...
October 30, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30340471/detection-of-a-heterozygous-germline-apc-mutation-in-a-three-generation-family-with-familial-adenomatous-polyposis-using-targeted-massive-parallel-sequencing-in-vietnam
#5
Hoa Giang, Vu T Nguyen, Sinh D Nguyen, Huu-Phuc Nguyen, Binh T Vo, Truc M Nguyen, Nguyen H Nguyen, Kiet D Truong, Thanh-Thuy T Do, Minh-Duy Phan, Hoai-Nghia Nguyen
BACKGROUND: Familial adenomatous polyposis (FAP) is an autosomal dominant hereditary syndrome characterised by the development of hundreds to thousands of adenomatous colonic polyps during the second decade of life. FAP is caused by germ line mutations in the adenomatous polyposis coli (APC) gene located on chromosome 5q21-22. CASE PRESENTATION: A 36-year-old female was presented with 100-1000 adenomatous colonic polyps, typical of classic FAP symptoms. Genetic testing using massively parallel sequencing identified a 5-bp deletion (c...
October 19, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30340470/a-novel-mutation-in-the-cryaa-gene-associated-with-congenital-cataract-and-microphthalmia-in-a-chinese-family
#6
Zixun Song, Nuo Si, Wei Xiao
BACKGROUND: Congenital cataract is the leading cause of blindness in children worldwide. Approximately half of all congenital cataracts have a genetic basis. Protein aggregation is the single most important factor in cataract formation. METHODS: A four-generation Chinese family diagnosed with autosomal dominant congenital cataracts and microphthalmia was recruited at the Shengjing Hospital of China Medical University. Genomic DNA was extracted from the peripheral blood of the participants...
October 19, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30340465/do-polymorphisms-in-protein-kinase-catalytic-subunit-alpha-1-gene-associated-with-cancer-susceptibility-a-meta-analysis-and-systematic-review
#7
Jialin Meng, Xinyao Fan, Meng Zhang, Zongyao Hao, Chaozhao Liang
BACKGROUND: Currently, several studies have demonstrated that PRKAA1 polymorphisms conduce to the development of cancer. PRKAA1 gene encodes the AMP-activated protein kinase summit-α1, and plays an important role in cell metabolism. Thus, we performed a systematic review and meta-analysis of all enrolled eligible case-control studies to obtain a precise correlation between PRKAA1 polymorphism and cancer susceptibility. METHODS: Extensive retrieve was performed in Web of Science, Google Scholar, PubMed, EMbase, CNKI and Wanfang databases up to August 26, 2018...
October 19, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30340464/an-african-perspective-on-the-genetic-risk-of-chronic-kidney-disease-a-systematic-review
#8
Cindy George, Yandiswa Y Yako, Ikechi G Okpechi, Tandi E Matsha, Francois J Kaze Folefack, Andre P Kengne
BACKGROUND: Individuals of African ethnicity are disproportionately burdened with chronic kidney disease (CKD). However, despite the genetic link, genetic association studies of CKD in African populations are lacking. METHODS: We conducted a systematic review to critically evaluate the existing studies on CKD genetic risk inferred by polymorphism(s) amongst African populations in Africa. The study followed the HuGE handbook and PRISMA protocol. We included studies reporting on the association of polymorphism(s) with prevalent CKD, end-stage renaldisease (ESRD) or CKD-associated traits...
October 19, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30333007/novel-mutations-of-pkd-genes-in-chinese-patients-suffering-from-autosomal-dominant-polycystic-kidney-disease-and-seeking-assisted-reproduction
#9
Wen-Bin He, Wen-Juan Xiao, Yue-Qiu Tan, Xiao-Meng Zhao, Wen Li, Qian-Jun Zhang, Chang-Gao Zhong, Xiu-Rong Li, Liang Hu, Guang-Xiu Lu, Ge Lin, Juan Du
BACKGROUND: Autosomal dominant polycystic kidney disease (ADPKD), the commonest inherited kidney disease, is generally caused by heterozygous mutations in PKD1, PKD2, or GANAB (PKD3). METHODS: We performed mutational analyses of PKD genes to identify causative mutations. A set of 90 unrelated families with ADPKD were subjected to mutational analyses of PKD genes. Genes were analysed using long-range PCR (LR-PCR), direct PCR sequencing, followed by multiplex ligation-dependent probe amplification (MLPA) or screening of GANAB for some patients...
October 17, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30333000/response-to-olaparib-in-metastatic-castration-resistant-prostate-cancer-with-germline-brca2-mutation-a-case-report
#10
Yi Ma, Lijie He, Qianwen Huang, Shuang Zheng, Zhiqiang Zhang, Hongshi Li, Shuang Liu
BACKGROUND: Prostate cancer is a heterogeneous disease, meaning patients would benefit from different treatment strategies based on their molecular stratification. In recent years, several genomic studies have identified prostate cancers with defects in DNA repair genes. It is known that the PARP inhibitor, olaparib, has a significant synthetic lethal effect on tumors with BRCA 1/2 mutations, particularly in ovarian and breast cancer. CASE PRESENTATION: In this study, we describe a patient with metastatic castration-resistant prostate cancer (mCRPC) containing a BRCA2 germline mutation who underwent olaparib treatment...
October 17, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30305043/mis-splicing-of-the-galns-gene-resulting-from-deep-intronic-mutations-as-a-cause-of-morquio-a-disease
#11
Anna Caciotti, Rodolfo Tonin, Matthew Mort, David N Cooper, Serena Gasperini, Miriam Rigoldi, Rossella Parini, Federica Deodato, Roberta Taurisano, Michelina Sibilio, Giancarlo Parenti, Renzo Guerrini, Amelia Morrone
BACKGROUND: Mucopolysaccharidosis-IVA (Morquio A disease) is a lysosomal disorder in which the abnormal accumulation of keratan sulfate and chondroitin-6-sulfate is consequent to mutations in the galactosamine-6-sulfatase (GALNS) gene. Since standard DNA sequencing analysis fails to detect about 16% of GALNS mutant alleles, gross DNA rearrangement screening and uniparental disomy evaluation are required to complete the molecular diagnosis. Despite this, the second pathogenic GALNS allele generally remains unidentified in ~ 5% of Morquio-A disease patients...
October 11, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30305042/de-novo-mutations-in-scn1a-are-associated-with-classic-rett-syndrome-a-case-report
#12
Mari Wold Henriksen, Kirstine Ravn, Benedicte Paus, Stephen von Tetzchner, Ola H Skjeldal
BACKGROUND: Rett syndrome (RTT) is a neurodevelopmental disorder. In more than 95% of females with classic RTT a pathogenic mutation in MECP2 has been identified. This leaves a small fraction of classic cases with other genetic causes. So far, there has not been reported any other gene that may account for the majority of these cases. CASE PRESENTATION: We describe two females who fulfill the diagnostic criteria for classic RTT, with pathogenic de novo mutations in SCN1A, which usually leads to Dravet syndrome...
October 11, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30290787/association-between-acromegaly-and-a-single-nucleotide-polymorphism-rs2854744-in-the-igfbp3-gene
#13
Ming Gao, Bin Zhu, Zhe Xu, Shujun Liu, Jiajia Liu, Guojun Zhang, Yang Gao, Yubo Fan, Xixiong Kang
BACKGROUND: It has been reported that the single nucleotide polymorphism (SNP) rs2854744 at the - 202 locus of insulin-like growth factor binding protein-3 (IGFBP3) is associated with serum levels and a number of malignancies. However, the effect of IGFBP3 gene polymorphism on acromegaly is less clear. Therefore, in the current study, we aimed to investigate whether the -202A/C polymorphism of IGFBP3 constitutes a risk factor for acromegaly. METHODS: The study included 102 acromegalic patients and 143 control subjects in Beijing Tiantan Hospital...
October 5, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30290772/discovery-of-rare-ancestry-specific-variants-in-the-fetal-genome-that-confer-risk-of-preterm-premature-rupture-of-membranes-pprom-and-preterm-birth
#14
Bhavi P Modi, Hardik I Parikh, Maria E Teves, Rewa Kulkarni, Jiang Liyu, Roberto Romero, Timothy P York, Jerome F Strauss
BACKGROUND: Preterm premature rupture of membranes (PPROM) is the leading identifiable cause of preterm birth, a complication that is more common in African Americans. Attempts to identify genetic loci associated with preterm birth using genome-wide association studies (GWAS) have only been successful with large numbers of cases and controls, and there has yet to be a convincing genetic association to explain racial/ethnic disparities. Indeed, the search for ancestry-specific variants associated with preterm birth has led to the conclusion that spontaneous preterm birth could be the consequence of multiple rare variants...
October 5, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30286738/comment-on-report-of-5-novel-mutations-of-the-%C3%AE-l-iduronidase-gene-and-comparison-of-korean-mutations-in-relation-with-those-of-japan-or-china-in-patients-with-mucopolysaccharidosis-i
#15
Edina Poletto, Ursula Matte, Guilherme Baldo
In this comment, we highlight that the IDUA pathogenic variants 704ins5 and c.613_617dupTGCTC are the same, but have different names depending on the nomenclature guideline used. Therefore, the frequency of this variant is 17.6% of alleles in Korean patients. This commentary stresses the importance of proper variant annotation and the use of guidelines when describing or reviewing mutations.
October 4, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30285720/novel-mutations-in-tpm2-and-piezo2-are-responsible-for-distal-arthrogryposis-da-2b-and-mild-da-in-two-chinese-families
#16
Shan Li, Yi You, Jinsong Gao, Bin Mao, Yixuan Cao, Xiuli Zhao, Xue Zhang
BACKGROUND: Distal arthrogryposis (DA) is a group of clinically and genetically heterogeneous disorders that involve multiple congenital limb contractures and comprise at least 10 clinical subtypes. Here, we describe our findings in two Chinese families: Family 1 with DA2B (MIM 601680) and Family 2 with mild DA. METHODS: To map the disease locus, two-point linkage analysis was performed with microsatellite markers closed to TPM2, TNNI2/TNNT3 and TNNC2. In Family 1, a positive LOD (logarithm of odds) score was only obtained at the microsatellite marker close to TPM2 and mutation screening was performed using direct sequencing of TPM2 in the proband...
October 3, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30285654/a-first-cln6-variant-case-of-late-infantile-neuronal-ceroid-lipofuscinosis-caused-by-a-homozygous-mutation-in-a-boy-from-china-a-case-report
#17
Guilian Sun, Fang Yao, Zhuoling Tian, Tianjiao Ma, Zhiliang Yang
BACKGROUND: Neuronal ceroid lipofuscinosis (NCLs) are lysosomal storage disorders characterized by seizures, motor impairment, and loss of vision. Ceroid lipofuscinosis (CLN) gene mutations are the cause, but NCL cases arising from CLN6 mutations have not been described in China to date. The CLN6 protein, which plays a role in lysosomal function, is an endoplasmic reticulum (ER) membrane protein with seven transmembrane (TM) domains. It has a cytosolic-facing amino terminal domain and a luminal-facing carboxyl terminal domain, with six loops between the TM domains...
October 1, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30285649/biochemical-and-molecular-characterization-of-adult-patients-with-type-i-gaucher-disease-and-carrier-frequency-analysis-of-leu444pro-a-common-gaucher-disease-mutation-in-india
#18
Jayesh Sheth, Dhairya Pancholi, Mehul Mistri, Payal Nath, Chitra Ankleshwaria, Riddhi Bhavsar, Ratna Puri, Shubha Phadke, Frenny Sheth
BACKGROUND: Gaucher disease is a rare pan-ethnic disorder which occurs due to an increased accumulation of undegraded glycolipid glucocerebroside inside the cells' lysosomes. A beta-Glucosidase (GBA) gene defect results in glucocerebrosidase enzyme deficiency. Though the disease is mainly diagnosed in childhood, the adult manifestation is often missed or identified late due to the failure to recognize the heterogeneous clinical presentation. The present study includes seven unrelated Indian adult patients (age range: 20-40 years) having splenomegaly, with or without hepatomegaly, cytopenia and bone abnormality...
October 1, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30268105/detecting-clinically-actionable-variants-in-the-3-exons-of-pms2-via-a-reflex-workflow-based-on-equivalent-hybrid-capture-of-the-gene-and-its-pseudogene
#19
Genevieve M Gould, Peter V Grauman, Mark R Theilmann, Lindsay Spurka, Irving E Wang, Laura M Melroy, Robert G Chin, Dustin H Hite, Clement S Chu, Jared R Maguire, Gregory J Hogan, Dale Muzzey
BACKGROUND: Hereditary cancer screening (HCS) for germline variants in the 3' exons of PMS2, a mismatch repair gene implicated in Lynch syndrome, is technically challenging due to homology with its pseudogene PMS2CL. Sequences of PMS2 and PMS2CL are so similar that next-generation sequencing (NGS) of short fragments-common practice in multigene HCS panels-may identify the presence of a variant but fail to disambiguate whether its origin is the gene or the pseudogene. Molecular approaches utilizing longer DNA fragments, such as long-range PCR (LR-PCR), can definitively localize variants in PMS2, yet applying such testing to all samples can have logistical and economic drawbacks...
September 29, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/30241514/muscle-specific-regulation-of-right-ventricular-transcriptional-responses-to-chronic-hypoxia-induced-hypertrophy-by-the-muscle-ring-finger-1-murf1-ubiquitin-ligase-in-mice
#20
Robert H Oakley, Matthew J Campen, Michael L Paffett, Xin Chen, Zhongjing Wang, Traci L Parry, Carolyn Hillhouse, John A Cidlowski, Monte S Willis
BACKGROUND: We recently identified a role for the muscle-specific ubiquitin ligase MuRF1 in right-sided heart failure secondary to pulmonary hypertension induced by chronic hypoxia (CH). MuRF1-/- mice exposed to CH are resistant to right ventricular (RV) dysfunction whereas MuRF1 Tg + mice exhibit impaired function indicative of heart failure. The present study was undertaken to understand the underlying transcriptional alterations in the RV of MuRF1-/- and MuRF1 Tg + mice. METHODS: Microarray analysis was performed on RNA isolated from the RV of MuRF1-/-, MuRF1 Tg+, and wild-type control mice exposed to CH...
September 21, 2018: BMC Medical Genetics
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