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Biotinidase deficiency

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https://www.readbyqxmd.com/read/29445937/secondary-hemophagocytic-syndrome-associated-with-cog6-gene-defect-report-and-review
#1
Nouf Althonaian, Abdulrahman Alsultan, Eva Morava, Majid Alfadhel
Hemophagocytic lymphohistiocytosis (HLH) is a rare but potentially fatal disease that is characterized by proliferation and infiltration of hyperactivated macrophages and T-lymphocytes. Clinically, it is characterized by prolonged fever, hepatosplenomegaly, hypertriglyceridemia, hypofibrinogenemia, pancytopenia, and hemophagocytosis in the bone marrow, spleen, or lymph nodes. It can be classified as primary if it is due to a genetic defect, or secondary if it is due to a different etiology such as severe infection, immune deficiency syndrome, rheumatological disorder, malignancy, and inborn errors of metabolism such as galactosemia, multiple sulfatase deficiency, lysinuric protein intolerance, Gaucher disease, Niemann-Pick disease, Wolman disease, propionic acidemia, methylmalonic acidemia, biotinidase deficiency, cobalamin C defect, galactosialidosis, Pearson syndrome, and long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) deficiency...
February 15, 2018: JIMD Reports
https://www.readbyqxmd.com/read/29431165/-think-metabolic-in-adults-with-diagnostic-challenges-biotinidase-deficiency-as-a-paradigm-disorder
#2
Barry Wolf
Neurologists should consider the possibility of an inherited metabolic disorder in adults with neurologic symptoms that may or may not mimic those seen in affected children, such as in the case of biotinidase deficiency. Because many of these disorders are treatable, they must be included in the differential diagnosis. Technologies, such as specific biochemical analysis and whole exomic sequencing, can assist the clinician by leading to the appropriate diagnosis and treatment. Whole exomic sequencing can identify known and putative mutations in a patient's genome...
December 2017: Neurology. Clinical Practice
https://www.readbyqxmd.com/read/29359854/clinical-features-btd-gene-mutations-and-their-functional-studies-of-eight-symptomatic-patients-with-biotinidase-deficiency-from-southern-china
#3
Zongcai Liu, Xiaoyuan Zhao, Huiying Sheng, Yanna Cai, Xi Yin, Xiaodan Chen, Ling Su, Zhikun Lu, Chunhua Zeng, Xiuzhen Li, Li Liu
Biotinidase (BTD) deficiency is a rare autosomal recessive metabolic disease, which develops neurological and cutaneous symptoms because of the impaired biotin recycling. Pathogenic mutations on BTD gene cause BTD deficiency. Clinical features and mutation analysis of Chinese children with BTD deficiency were rarely described. Herein, for the first time, we reported the clinical features, BTD gene mutations and their functional studies of eight symptomatic children with BTD deficiency from southern China. Fatigue, hypotonia, proximal muscular weakness, hearing deficits, rash and respiratory problems are common clinical phenotype of our patients...
January 23, 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29353266/twenty-seven-mutations-with-three-novel-pathologenic-variants-causing-biotinidase-deficiency-a-report-of-203-patients-from-the-southeastern-part-of-turkey
#4
Berna Seker Yilmaz, Neslihan Onenli Mungan, Deniz Kor, Derya Bulut, Gülşah Seydaoglu, Murat Öktem, Serdar Ceylaner
BACKGROUND: Biotinidase deficiency (BD) is an autosomal recessive inborn error of metabolism characterized by neurologic and cutaneous symptoms and can be detected by newborn screening. Newborn screening for BD was implemented in Turkey at the end of 2008. METHODS: In total, 203 patients who were identified among the infants detected by the newborn screening were later confirmed to have BD through measurement of serum biotinidase activity. We also performed BTD mutation analysis to characterize the genetic profile...
January 20, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29314108/high-dose-biotin-in-infants-mimics-biochemical-hyperthyroidism-with-some-commercial-assays
#5
Ved Bhushan Arya, Michal Ajzensztejn, Gayle Appleby, Sue Oddy, David Halsall, Krishna Chatterjee, Carla Moran, Tony Hulse
Biotin is a water-soluble B-complex vitamin, which is an essential coenzyme for four carboxylases enzymes involved in intermediary metabolism. Although the recommended daily intake (RDI) is 30 micrograms, doses as high as 100 times the RDI are widely used for dietary supplementation, therapy of several inherited metabolic diseases (biotin-thiamine responsive basal ganglia disease and biotinidase deficiency) and supportive treatment in patients with disorders of mitochondrial energy metabolism. This article is protected by copyright...
January 5, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29240078/erratum-laboratory-diagnosis-of-biotinidase-deficiency-2017-update-a-technical-standard-and-guideline-of-the-american-college-of-medical-genetics-and-genomics
#6
Erin T Strovel, Tina M Cowan, Anna I Scott, Barry Wolf
This corrects the article DOI: 10.1038/gim.2017.84.
December 14, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29039164/-screening-for-newborn-organic-aciduria-in-zhejiang-province-prevalence-outcome-and-follow-up
#7
Fang Hong, Xinwen Huang, Yu Zhang, Jianbin Yang, Fan Tong, Huaqing Mao, Xiaolei Huang, Xuelian Zhou, Rulai Yang, Zhengyan Zhao
OBJECTIVE: To analyze the results and follow up data of screening for newborn organic aciduria in Zhejiang province. METHODS: The results and follow-up data of 1 861 262 newborns from Zhejiang province undergoing screening for organic aciduria during January 2009 and December 2016 were retrospectively analyzed. The acylcarnitine spectrum in urine samples was detected by tandem mass spectrum (MS/MS) and the positive patients were confirmed by urine gas chromatography mass spectrometry and/or gene analysis...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28991128/characterizing-the-biotinidase-deficiency-in-a-child-when-considering-a-possible-disease-association
#8
Barry Wolf
No abstract text is available yet for this article.
October 18, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28971021/neonatal-screening-for-biotinidase-deficiency-a-30-year-single-center-experience
#9
Francesco Porta, Veronica Pagliardini, Isabella Celestino, Enza Pavanello, Severo Pagliardini, Ornella Guardamagna, Alberto Ponzone, Marco Spada
We reviewed the outcome of newborn screening for biotinidase deficiency performed at our department since 1987. Among 1,097,894 newborns screened, 461 were recalled, and 18 were identified as affected by complete or partial biotinidase deficiency (incidence 1:61,000, false positive rate 0.04%). The common missense mutation Q456H was found in 80% of patients with profound biotinidase deficiency. Of them, one patient harbored the novel mutation M399I in compound heterozygosity (M399I/Q456H). The complex allele A171T/D444H in cis was found in two patients with profound biotinidase deficiency (in homozygosity and in compound heterozygosity with the R211H mutation, respectively) and in one patient with partial biotinidase deficiency (in compound heterozygosity with the protective allele D444H in trans)...
December 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28682309/laboratory-diagnosis-of-biotinidase-deficiency-2017-update-a-technical-standard-and-guideline-of-the-american-college-of-medical-genetics-and-genomics
#10
Erin T Strovel, Tina M Cowan, Anna I Scott, Barry Wolf
Disclaimer: These ACMG Standards and Guidelines are intended as an educational resource for clinical laboratory geneticists to help them provide quality clinical laboratory genetic services. Adherence to these Standards and Guidelines is voluntary and does not necessarily assure a successful medical outcome. These Standards and Guidelines should not be considered inclusive of all proper procedures and tests or exclusive of others that are reasonably directed to obtaining the same results. In determining the propriety of any specific procedure or test, clinical laboratory geneticists should apply their professional judgment to the specific circumstances presented by the patient or specimen...
October 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28653700/corrigendum-to-first-contiguous-gene-deletion-causing-biotinidase-deficiency-the-enzyme-deficiency-in-three-sri-lankan-children-mol-genet-metab-rep-2-2016-81-84
#11
Danika Nadeen Senanayake, Eresha A Jasinge, Kirit Pindolia, Jithangi Wanigasinghe, Kristin Monaghan, Sharon F Suchy, Sainan Wei, Subashini Jaysena, Barry Wolf
[This corrects the article DOI: 10.1016/j.ymgmr.2015.01.005.].
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28640880/correction-biotinidase-deficiency-genotype-biochemical-phenotype-association-in-brazilian-patients
#12
Taciane Borsatto, Fernanda Sperb-Ludwig, Samyra E Lima, Maria R S Carvalho, Pablo A S Fonseca, José S Camelo, Erlane M Ribeiro, Paula F V de Medeiros, Charles M Lourenço, Carolina F M de Souza, Raquel Boy, Têmis M Félix, Camila M Bittar, Louise L C Pinto, Eurico C Neto, Henk J Blom, Ida V D Schwartz
[This corrects the article DOI: 10.1371/journal.pone.0177503.].
2017: PloS One
https://www.readbyqxmd.com/read/28586590/diagnostic-dilemma-of-biotinidase-deficiency-case-of-a-child-from-pakistan
#13
Maria Shoaib, Ahmad Faraz, Syed Ahsanuddin Ahmed, Marium Jamil, Zobia Aijaz
Biotinidase deficiency is an autosomal recessive in born error of metabolism which is characterized by the lack of cleavage of biotin. This disease has been reported very rarely with the incidence found to be 1 per 60,089 and 1 per 112,271 of live births, respectively. This condition has profound effects on the neurological system, various neurocutaneous manifestations and metabolic derangements. We report a case of 3-year-old male child who presented in ER with severe respiratory distress for 1 day in a tertiary care set up...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28516283/developmental-window-of-sensorineural-deafness-in-biotinidase-deficient-mice
#14
Kathleen June Maheras, Kirit Pindolia, Barry Wolf, Alexander Gow
Biotinidase deficiency is an autosomal recessively inherited disorder that results in the inability to recycle the vitamin, biotin. If untreated, the disorder can result in a range of neurological and cutaneous symptoms, including sensorineural deficits and deafness. To understand early mechanistic abnormalities that may precede more generalized and nonspecific effects of metabolic deficits such as weight loss and acidosis, we have analyzed auditory brainstem responses (ABRs) in biotinidase-deficient knockout (Btd (-/-) ) mice in the periweaning period with or without dietary biotin supplementation...
May 17, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28498829/biotinidase-deficiency-genotype-biochemical-phenotype-association-in-brazilian-patients
#15
Taciane Borsatto, Fernanda Sperb-Ludwig, Samyra E Lima, Maria R S Carvalho, Pablo A S Fonseca, José S Camelo, Erlane M Ribeiro, Paula F V de Medeiros, Charles M Lourenço, Carolina F M de Souza, Raquel Boy, Têmis M Félix, Camila M Bittar, Louise L C Pinto, Eurico C Neto, Henk J Blom, Ida V D Schwartz
INTRODUCTION: The association between the BTD genotype and biochemical phenotype [profound biotinidase deficiency (BD), partial BD or heterozygous activity] is not always consistent. This study aimed to investigate the genotype-biochemical phenotype association in patients with low biotinidase activity. METHODS: All exons, the 5'UTR and the promoter of the BTD gene were sequenced in 72 Brazilian individuals who exhibited low biotinidase activity. For each patient, the expected biochemical phenotype based on the known genotype was compared with the observed biochemical phenotype...
2017: PloS One
https://www.readbyqxmd.com/read/28337934/reply-to-the-letter-biotinidase-deficiency-masquerading-as-multiple-sclerosis
#16
Ayman Tourbah, Frédéric Sedel
No abstract text is available yet for this article.
March 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28337933/biotinidase-deficiency-masquerading-as-multiple-sclerosis
#17
Barry Wolf
No abstract text is available yet for this article.
March 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28281033/a-treatable-cause-of-myelopathy-and-vision-loss-mimicking-neuromyelitis-optica-spectrum-disorder-late-onset-biotinidase-deficiency
#18
Sanem Yilmaz, Mine Serin, Ebru Canda, Cenk Eraslan, Hande Tekin, Sema Kalkan Ucar, Sarenur Gokben, Hasan Tekgul, Gul Serdaroglu
Biotinidase deficiency is characterized by severe neurological manifestations as hypotonia, lethargy, ataxia, hearing loss, seizures and developmental retardation in its classical form. Late-onset biotinidase deficiency presents distinctly from the classical form such as limb weakness and vision problems. A 14-year-old boy presented with progressive vision loss and upper limb weakness. The patient was initiated steroid therapy with a preliminary diagnosis of neuromyelitis optica spectrum disorder due to the craniospinal imaging findings demonstrating optic nerve, brainstem and longitudinally extensive spinal cord involvement...
June 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28220409/irreversibility-of-symptoms-with-biotin-therapy-in-an-adult-with-profound-biotinidase-deficiency
#19
Patrick Ferreira, Alicia Chan, Barry Wolf
We report a 36-year-old woman who exhibited progressive optic atrophy at 13 years old, then stroke-like episodes and spastic diplegia in her 20s. Biotinidase deficiency was not readily considered in the differential diagnosis, and the definitive diagnosis was not made until pathological variants of the biotinidase gene (BTD) were found by exome sequencing. Profound biotinidase deficiency was confirmed by enzyme analysis. Unfortunately, her symptoms did not resolve or improve with biotin treatment. Biotin therapy is essential for all individuals with profound biotinidase deficiency and for preventing further damage in those who already exhibit irreversible neurological damage...
2017: JIMD Reports
https://www.readbyqxmd.com/read/28054209/long-term-outcome-of-expanded-newborn-screening-at-boston-children-s-hospital-benefits-and-challenges-in-defining-true-disease
#20
Yuval E Landau, Susan E Waisbren, Lawrence M A Chan, Harvey L Levy
INTRODUCTION: There is no universal consensus of the disorders included in newborn screening programs. Few studies so far, mostly short-term, have compared the outcome of disorders detected by expanded newborn screening (ENBS) to the outcome of the same disorders detected clinically. METHODS: We compared the clinical and neurodevelopmental outcomes in patients with metabolic disorders detected by ENBS, including biotinidase testing, with those detected clinically and followed at the Metabolism Clinic at Boston Children's Hospital...
March 2017: Journal of Inherited Metabolic Disease
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