Abstract:
BACKGROUND:In X-linked dilated cardiomyopathy due to dystrophin mutations which abolish the expression of the M isoform (5'-XLDC), the skeletal muscle is spared through the up-regulation of the Brain (B) isoform, a compensatory mechanism that does not appear to occur in the heart of affected individuals. METHODS:We quantitatively studied the expression topography of both B and M isoforms in various human heart regions through in-situ RNA hybridization, Reverse-Transcriptase and Real-Time PCR experiments. We also investigated the methylation profile of the B promoter region in the heart and quantified the B isoform up regulation in the skeletal muscle of two 5'-XLDC patients. RESULTS:Unlike the M isoform, consistently detectable in all the heart regions, the B isoform was selectively expressed in atrial cardiomyocytes, but absent in ventricles and in conduction system structures. Although the level of B isoform messenger in the skeletal muscle of 5'-XLDC patients was lower that of the M messenger present in control muscle, it seems sufficient to avoid an overt muscle pathology. This result is consistent with the protein level in XLDC patients muscles we previously quantified. Methylation studies revealed that the B promoter shows an overall low level of methylation at the CG dinucleotides in both atria and ventricles, suggesting a methylation-independent regulation of the B promoter activity. CONCLUSIONS:The ventricular dilatation seen in 5'-XLDC patients appears to be functionally related to loss of the M isoform, the only isoform transcribed in human ventricles; in contrast, the B isoform is well expressed in heart but confined to the atria. Since the B isoform can functionally replace the M isoform in the skeletal muscle, its expression in the heart could potentially exert the same rescue function. Methylation status does not seem to play a role in the differential B promoter activity in atria and ventricles, which may be governed by other regulatory mechanisms. If these mechanisms could be deduced, de-silencing of the B isoform may represent a therapeutic strategy in 5'-XLDC patients.
journal_name
BMC Med Genetjournal_title
BMC medical geneticsauthors
Neri M,Valli E,Alfano G,Bovolenta M,Spitali P,Rapezzi C,Muntoni F,Banfi S,Perini G,Gualandi F,Ferlini Adoi
10.1186/1471-2350-13-20subject
Has Abstractpub_date
2012-03-28 00:00:00pages
20issn
1471-2350pii
1471-2350-13-20journal_volume
13pub_type
杂志文章abstract:BACKGROUND:Hereditary spherocytosis (HS) is a common type of hereditary hemolytic anemia. According to the current diagnostic criteria of HS, patients with a family history of HS, typical clinical features and laboratory investigations could be diagnosed without the requirement of any additional tests, including geneti...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-019-0826-7
更新日期:2019-05-24 00:00:00
abstract:BACKGROUND:Sjogren-Larsson syndrome is a hereditary neurocutaneous syndrome that is non-progressive in nature. Although neuroregression has been reported in seizure-prone preschool children requiring anti-epileptic treatment, teenage-onset dystonia precipitating neurodegeneration without any immediate causal events has...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-018-0663-0
更新日期:2018-08-29 00:00:00
abstract:BACKGROUND:von Hippel-Lindau (VHL) disease is a hereditary cancer syndrome caused by germline mutations in the VHL gene. Patients have significant morbidity and mortality secondary to vascular tumors. Disease management is centered on tumor surveillance that allows early detection and treatment. Presymptomatic genetic ...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-11-4
更新日期:2010-01-12 00:00:00
abstract:BACKGROUND:Although vitamin D receptor (VDR) polymorphisms have been shown to be associated with abnormal glucose metabolism, the reported polymorphisms are unlikely to have any biological consequences. The VDR gene has two potential translation initiation sites. A T-to-C polymorphism has been noted in the first ATG (f...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-2-2
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:Mutations in the SLC26A4 gene are associated with Pendred syndrome and autosomal recessive non-syndromic deafness (DFNB4). Both disorders have similar audiologic characteristics: bilateral hearing loss, often severe or profound, which may be associated with abnormalities of the inner ear, such as dilatation ...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-018-0585-x
更新日期:2018-05-08 00:00:00
abstract:BACKGROUND:Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is increasingly recognized as an inherited arterial disease leading to a step-wise decline and eventually to dementia. CADASIL is caused by mutations in NOTCH3 epidermal growth factor-like repeat that maps to...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-8-67
更新日期:2007-11-09 00:00:00
abstract:BACKGROUND:Argininosuccinic aciduria (ASAuria; OMIM 207900) is a rare autosomal recessive heterogeneous urea cycle disorder, which leads to the accumulation of argininosuccinic acid in the blood and urine. We aimed to perform genetic test to the patient and help clinician to diagnose precisely. CASE PRESENTATION:In th...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-016-0273-7
更新日期:2016-02-03 00:00:00
abstract:BACKGROUND:L. braziliensis causes cutaneous (CL) and mucosal (ML) leishmaniasis. Wound healing neutrophil (PMN) and macrophage responses made following the bite of the vector sand fly contribute to disease progression in mice. To look at the interplay between PMN and macrophages in disease progression in humans we aske...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-11-10
更新日期:2010-01-20 00:00:00
abstract:BACKGROUND:Preterm birth (PTB) is a complex disorder associated with significant neonatal mortality and morbidity and long-term adverse health consequences. Multiple lines of evidence suggest that genetic factors play an important role in its etiology. This study was designed to identify genetic variation associated wi...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-14-77
更新日期:2013-07-26 00:00:00
abstract:BACKGROUND:The platelet P2Y12 receptor plays a key role in platelet activation. The H2 haplotype of the P2Y12 receptor gene (P2RY12) has been found to be associated with maximal aggregation response to adenosine diphosphate (ADP) and with increased risk for peripheral arterial disease. No data are available on its asso...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-8-59
更新日期:2007-09-05 00:00:00
abstract:BACKGROUND:The complement component (3b/4b) receptor 1 gene (CR1) gene has been proved to affect the susceptibility of Alzheimer's disease (AD) in different ethnic and districts groups. However, the effect of CR1 genetic variants on amyloid β (Aβ) metabolism of AD human is still unclear. Hence, the aim of this study wa...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-020-01114-x
更新日期:2020-09-12 00:00:00
abstract:BACKGROUND:Mutations of the autoimmune regulator gene (AIRE), located on chromosome 21q22.3, are recognized as the cause of a rare monogenic organ-specific autoimmune disorder called autoimmune polyglandular syndrome type 1 (APS-1). Three major components of this syndrome include chronic mucocutaneous candidiasis (CMC)...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-019-0870-3
更新日期:2019-08-16 00:00:00
abstract:BACKGROUND:The biosynthesis of estrogens from androgens is catalyzed by aromatase P450 enzyme, coded by the CYP19A1 gene on chromosome 15q21.2. Genetic variation within the CYP19A1 gene sequence has been shown to alter the function of the enzyme. The aim of this study is to investigate whether a non-synonymous Arg264Cy...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-12-165
更新日期:2011-12-20 00:00:00
abstract:BACKGROUND:Preeclampsia can lead to adverse maternal and perinatal outcomes. There are few studies on the association of preeclampsia with thrombophilia in Africa including Sudan. METHODS:A case -controls study was conducted at Saad Abualila Hospital in Khartoum, Sudan during the period of February through November 20...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-018-0737-z
更新日期:2019-01-05 00:00:00
abstract:BACKGROUND:Mutations in GATA6 are the most frequent cause of pancreatic agenesis. Most cases present with neonatal diabetes mellitus. CASE PRESENTATION:The case was a female born after an uncomplicated pregnancy and delivery in a non-consanguineous family (3.59 kg, 70th percentile). Severe cardiac malformations were d...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-020-01012-2
更新日期:2020-04-03 00:00:00
abstract:BACKGROUND:DNA methylation at specific CpG sites within gene promoter regions is known to regulate transcriptional activity in vitro. In human adipose tissue, basal transcription of the aromatase (CYP19A1) gene is driven primarily by the I.4 promoter however the role of DNA methylation in regulating expression in ex vi...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-14-87
更新日期:2013-08-30 00:00:00
abstract:BACKGROUND:Inflammation is a response of body tissues to injury or irritation. Small RNAs, such as miR-146a and miR-499, participate in various processes of tumorigenesis. A recent study indicates that inflammation and abnormal immune responses may promote malignant progression in cancer development, indicating that in...
journal_title:BMC medical genetics
pub_type: 杂志文章,meta分析
doi:10.1186/s12881-014-0092-7
更新日期:2014-08-10 00:00:00
abstract:BACKGROUND:Obesity is related to multiple cardiovascular disease (CVD) risk factors as well as CVD and has a strong familial component. We tested for association between SNPs on the Affymetrix 100K SNP GeneChip and measures of adiposity in the Framingham Heart Study. METHODS:A total of 1341 Framingham Heart Study part...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-8-S1-S18
更新日期:2007-09-19 00:00:00
abstract:BACKGROUND:Inactivating mutations of CDC73 cause Hyperparathyroidism-Jaw Tumour syndrome (HPT-JT), Familial Isolated Hyperparathyroidism (FIHP) and sporadic parathyroid carcinoma. We conducted CDC73 mutation analysis in an HPT-JT family and confirm carrier status of the proband's daughter. METHODS:The proband had prim...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-017-0445-0
更新日期:2017-08-03 00:00:00
abstract:BACKGROUND:Chromosome 22q11.2 deletion syndrome (22q11DS) is the most common human microdeletion syndrome and is associated with many cognitive, neurological and psychiatric disorders. The majority of individuals have a 3 Mb deletion while others have a nested 1.5 Mb deletion, but rare atypical deletions have also been...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-014-0106-5
更新日期:2014-10-14 00:00:00
abstract:BACKGROUND:It is generally accepted that genetic factors play a role in susceptibility to both leprosy per se and leprosy type, but only few studies have tempted to quantify this. Estimating the contribution of genetic factors to clustering of leprosy within families is difficult since these persons often share the sam...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-6-40
更新日期:2005-11-24 00:00:00
abstract:BACKGROUND:Multiple sclerosis (MS) is a complex trait in which alleles at or near the class II loci HLA-DRB1 and HLA-DQB1 contribute significantly to genetic risk. The MHC class II transactivator (MHC2TA) is the master controller of expression of class II genes, and methylation of the promoter of this gene has been pre...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-9-63
更新日期:2008-07-07 00:00:00
abstract:BACKGROUND:Genetic variations in the calpain-10 gene (CAPN10), in particular the at-risk diplotype (112/121), were previously implicated with increased risk of type 2 diabetes (T2D). METHODS:We examined the association of CAPN10 UCSNP-43 (rs3792267), UCSNP-19 (rs3842570), and UCSNP-63 (rs5030952) SNPs with T2D in 917 ...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-11-75
更新日期:2010-05-15 00:00:00
abstract:BACKGROUND:Polymorphisms in and around the CTLA-4 gene have previously been associated to T1D and AITD in several populations. One such single nucleotide polymorphism (SNP), CT60, has been reported to affect the expression level ratio of the soluble (sCTLA-4) to full length CTLA-4 (flCTLA-4) isoforms. The aims of our s...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-8-3
更新日期:2007-02-06 00:00:00
abstract:BACKGROUND:Hereditary hemorrhagic telangiectasia (HHT) is a vascular multi-organ system disorder. Its diagnostic criteria include epistaxis, telangiectases in mucocutaneous sites, arteriovenous malformations (AVMs), and familial inheritance. HHT is transmitted as an autosomal dominant condition, caused in 85% of cases ...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-017-0380-0
更新日期:2017-02-23 00:00:00
abstract:BACKGROUND:Congenital NBCe1A deficiency with the SLC4A4 mutation causes severe proximal renal tubular acidosis, which often comprises extrarenal symptoms, such as intellectual disability and developmental delay, glaucoma, cataract and band keratopathy. To date, almost all mutations have been found to be homozygous muta...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-018-0612-y
更新日期:2018-06-18 00:00:00
abstract:BACKGROUND:KCNH1 encodes a voltage-gated potassium channel that is predominantly expressed in the central nervous system. Mutations in this gene were recently found to be responsible for Temple-Baraitser Syndrome (TMBTS) and Zimmermann-Laband syndrome (ZLS). METHODS:Here, we report a new case of TMBTS diagnosed in a L...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-016-0304-4
更新日期:2016-06-10 00:00:00
abstract:BACKGROUND:Cryptic structural abnormalities within the subtelomeric regions of chromosomes have been the focus of much recent research because of their discovery in a percentage of people with mental retardation (UK terminology: learning disability). These studies focused on subjects (largely children) with various sev...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-5-21
更新日期:2004-08-13 00:00:00
abstract:BACKGROUND:This study aimed to assess the association between 14 single nucleotide polymorphisms (SNPs) in six genes (IRF8, TMEM39A, IKZF3, ORMDL3, GSDMB, and ZPBP2) and systemic lupus erythematosus (SLE) in a Chinese Han population sample. METHODS:We carried out a case-control study of 415 patients with SLE and 470 h...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-017-0405-8
更新日期:2017-04-20 00:00:00
abstract:BACKGROUND:Kidneys have an important function in blood pressure (BP) regulation and elevated BP may lead to kidney failure. Chr2p12-p13 region linked to BP traits in multiple studies harbours a potential candidate for BP and renal function, N-acetyltransferase 8 (NAT8) expressed in embryonic and adult kidney and associ...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-9-25
更新日期:2008-04-10 00:00:00