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congenital erythropoietic porphyria

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https://www.readbyqxmd.com/read/28899405/neonatal-hemolytic-anemia-does-not-always-indicate-thalassemia-a-case-report
#1
Arwa A Al-Harazi, Bilguis M Al-Eryani, Butheinah A Al-Sharafi
BACKGROUND: Congenital erythropoietic porphyria is a rare autosomal recessive disorder that affects heme-porphyrin synthesis. This disorder is due to the genetic defect of uroporphyrinogen III cosynthase. This defect results in the accumulation of high amounts of uroporphyrin I in all tissues, leading to clinical manifestations ranging from mild to severe chronic damage of the skin, cartilage and bone. Hypertrichosis, erythrodontia and reddish-colored urine are often present, as well as hemolytic anemia accompanied by hepatosplenomegaly...
September 12, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28874591/mutation-in-human-clpx-elevates-levels-of-%C3%AE-aminolevulinate-synthase-and-protoporphyrin-ix-to-promote-erythropoietic-protoporphyria
#2
Yvette Y Yien, Sarah Ducamp, Lisa N van der Vorm, Julia R Kardon, Hana Manceau, Caroline Kannengiesser, Hector A Bergonia, Martin D Kafina, Zoubida Karim, Laurent Gouya, Tania A Baker, Hervé Puy, John D Phillips, Gaël Nicolas, Barry H Paw
Loss-of-function mutations in genes for heme biosynthetic enzymes can give rise to congenital porphyrias, eight forms of which have been described. The genetic penetrance of the porphyrias is clinically variable, underscoring the role of additional causative, contributing, and modifier genes. We previously discovered that the mitochondrial AAA+ unfoldase ClpX promotes heme biosynthesis by activation of δ-aminolevulinate synthase (ALAS), which catalyzes the first step of heme synthesis. CLPX has also been reported to mediate heme-induced turnover of ALAS...
September 5, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28865079/acquired-erythropoietic-uroporphyria-secondary-to-myelodysplastic-syndrome-with-chromosome-3-alterations-a-case-report
#3
S Podlipnik, F Guijarro, A Combalia, J To-Figueras, C Badenas, D Costa, M Rozman, S Jorge, P Aguilera, A Gaya
Congenital erythropoietic porphyria (CEP) is a rare, autosomal recessive disease caused by a deficiency of uroporphyrinogen III synthase (UROS), due to mutations in the UROS gene in chromosome 10. On occasion, patients show a mild late-onset disease, without germline UROS mutations, associated with hematologic malignancies. We report a 65-year-old patient with photosensitivity, porphyrins overexcretion and thrombocytopenia. Bone marrow analysis gave a diagnosis of myelodysplastic syndrome (MDS) with the presence of a derivative chromosome 3, possible due to an inversion including 3q21 and 3q26 breakpoints...
September 2, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28334762/missense-uros-mutations-causing-congenital-erythropoietic-porphyria-reduce-uros-homeostasis-that-can-be-rescued-by-proteasome-inhibition
#4
Jean-Marc Blouin, Ganeko Bernardo-Seisdedos, Emma Sasso, Julie Esteve, Cécile Ged, Magalie Lalanne, Arantza Sanz-Parra, Pedro Urquiza, Hubert de Verneuil, Oscar Millet, Emmanuel Richard
Congenital erythropoietic porphyria (CEP) is an inborn error of heme biosynthesis characterized by uroporphyrinogen III synthase (UROS) deficiency resulting in deleterious porphyrin accumulation in blood cells responsible for hemolytic anemia and cutaneous photosensitivity. We analyzed here the molecular basis of UROS impairment associated with twenty nine UROS missense mutations actually described in CEP patients. Using a computational and biophysical joint approach we predicted that most disease-causing mutations would affect UROS folding and stability...
April 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28329491/congenital-erythropoietic-porphyria-gunther-disease-long-term-follow-up-of-a-case-and-review
#5
Matthew Howard, Anthony Hall, Donald Ramsay
Patients with the rare genodermatosis congenitalerythropoietic porphyria (CEP, Gunther disease)develop erosions and scarring on sun-exposedsites caused by phototoxin mediated damage.Compromised skin barrier function places patientsat higher risk of infection and long term sequelaeinclude scarring. We report a long term follow up ofa 60 year old patient born with CEP and provide anextensive literature review of CEP including recentupdates on potential management options. Multiplepatient interviews and collection of biochemistry datawere conducted for the case discussion...
February 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28143953/hemolytic-anemia-repressed-hepcidin-level-without-hepatocyte-iron-overload-lesson-from-g%C3%A3-nther-disease-model
#6
Sarah Millot, Constance Delaby, Boualem Moulouel, Thibaud Lefebvre, Nathalie Pilard, Nicolas Ducrot, Cécile Ged, Philippe Lettéron, Lucia de Franceschi, Jean Charles Deybach, Carole Beaumont, Laurent Gouya, Hubert De Verneuil, Saïd Lyoumi, Hervé Puy, Zoubida Karim
Hemolysis occurring in hematologic diseases is often associated with an iron loading anemia. This iron overload is the result of a massive outflow of hemoglobin into the bloodstream, but the mechanism of hemoglobin handling has not been fully elucidated. Here, in a congenital erythropoietic porphyria mouse model, we evaluate the impact of hemolysis and regenerative anemia on hepcidin synthesis and iron metabolism. Hemolysis was confirmed by a complete drop in haptoglobin, hemopexin and increased plasma lactate dehydrogenase, an increased red blood cell distribution width and osmotic fragility, a reduced half-life of red blood cells, and increased expression of heme oxygenase 1...
February 2017: Haematologica
https://www.readbyqxmd.com/read/27859603/congenital-erythropoietic-porphyria-mild-presentation-with-late-onset-associated-with-a-mutation-in-the-uros-gene-promoter-sequence
#7
A Fityan, H Fassihi, R Sarkany
No abstract text is available yet for this article.
December 2016: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/27512208/congenital-erythropoietic-porphyria-with-undescended-testis
#8
Sandeep Arora, Arun Kumar Harith, Neha Sodhi
Hereditary porphyrias are a group of metabolic disorders of heme biosynthesis pathway that are characterized by acute neurovisceral symptoms, skin lesions, or both. Congenital erythropoietic porphyria (CEP) is an extremely rare disease with a mutation in the gene that codes for uroporphyrinogen III synthase leading to accumulation of porphyrin in different tissues and marked cutaneous photosensitivity. We report a case of CEP with infancy onset blistering, photosensitivity, red colored urine, and teeth along with scarring...
July 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27139922/cutaneous-porphyrias-causes-symptoms-treatments-and-the-danish-incidence-1989-2013
#9
Anne L Christiansen, Lise Aagaard, Aleksander Krag, Lars M Rasmussen, Anette Bygum
Porphyrias are rare diseases caused by altered haem synthesis leading to the accumulation of different haem intermediates. Neurovisceral attacks may occur in acute porphyrias, while photosensitivity is the presenting symptom in cutaneous porphyrias. We present here an overview of symptoms and a flowchart for the diagnosis of cutaneous porphyrias, with recommendations for monitoring and an update of treatment options. From the Danish Porphyria Register, we present the incidences and approximate prevalences of cutaneous porphyrias within the last 25 years...
November 2, 2016: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/27086902/late-onset-cutaneous-porphyria-in-a-patient-heterozygous-for-a-uroporphyrinogen-iii-synthase-gene-mutation
#10
P Aguilera, C Badenas, S D Whatley, J To-Figueras
Deficiency of uroporphyrinogen III synthase (UROS) causes congenital erythropoietic porphyria (CEP). The disease, originating from the inheritance of mutations within the UROS gene, presents a recessive form of transmission. In a few patients, a late-onset CEP-like phenotype without UROS mutations appears to be associated with a myelodysplastic syndrome. We report a 60-year-old man with late-onset signs of cutaneous porphyria and accumulation in urine, plasma and faeces of type I porphyrin isomers characteristic of CEP...
December 2016: British Journal of Dermatology
https://www.readbyqxmd.com/read/26969896/advances-in-understanding-the-pathogenesis-of-congenital-erythropoietic-porphyria
#11
REVIEW
Elena Di Pierro, Valentina Brancaleoni, Francesca Granata
Congenital erythropoietic porphyria (CEP) is a rare genetic disease resulting from the remarkable deficient activity of uroporphyrinogen III synthase, the fourth enzyme of the haem biosynthetic pathway. This enzyme defect results in overproduction of the non-physiological and pathogenic porphyrin isomers, uroporphyrin I and coproporphyrin I. The predominant clinical characteristics of CEP include bullous cutaneous photosensitivity to visible light from early infancy, progressive photomutilation and chronic haemolytic anaemia...
May 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/26957860/a-rare-case-of-puberty-onset-congenital-erythropoietic-porphyria-with-ophthalmological-manifestations
#12
Mishra Debjani, Mukhopadhyay Somnath
A 27-year-old male patient was presented with foreign body sensation in both the eyes for 2 years duration and blisters followed by scarring and pigmentation in the photo-exposed areas of the body over the previous 12 years. His urine was reddish colored for the previous year. On examination, there was scarring, hyper-pigmentation of photo-exposed parts of the body along with resorption of the distal phalanges of fingers in both hands except the smallest digit which had onycholysis. Ocular examination indicated scleral necrosis in the interpalpebral areas in both eyes and bilateral dry eye...
January 2016: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/26903733/scleral-necrosis-in-congenital-erythropoietic-porphyria-a-case-report-and-review-of-the-literature
#13
Shweta Agarwal, Parthopratim Dutta Majumder, Bhaskar Srinivasan, Geetha Iyer
A 28-year-old presented with complaints of severe pain and redness in the left eye since 2 weeks. He had similar complaints in the right eye 2 years back for which he had undergone a scleral patch graft. Best corrected visual acuity was 20/20 in both eyes. The right had a well vascularized scleral graft and rest of the anterior segment was normal. The left eye had inferior conjunctival congestion with an area of the scleral melt with uveal show just temporal to the limbus in the interpalbebral area. The cornea was clear and anterior chamber was quiet in the left eye...
September 2015: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/26631056/-congenital-erythropoietic-porphyria-an-update
#14
REVIEW
C Wenner, N J Neumann, J Frank
BACKGROUND: Congenital erythropoetic porphria is a very rare type of autosomal recessive nonacute porphyria. Homozygous or compound heterozygous mutations in the uroporphyrinogen III consynthase gene cause a marked enzymatic deficiency of uroporphyrinogen III consynthase, the fourth enzyme along the heme biosynthetic pathway. CLINICAL PRESENTATION: Clinically, affected patients are characterized by a moderate to severe photosensitivity. Starting early in infancy, they develop blisters, erosions, and exulcerations in sun-exposed areas of the body, often resulting in scar formation and mutilation...
March 2016: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/26467880/congenital-erythropoietic-porphyria-with-calcific-constrictive-pericarditis-a-case-report-and-brief-review-of-literature
#15
REVIEW
Ujjwal K Chowdhury, Kartik Patel, Sandeep Seth, Ruma Ray, Priya Jagia, Manoj Sahu
An 18-year-old boy with congenital erythropoietic porphyria and calcific constrictive pericarditis underwent total pericardiectomy. The cause of pericardial calcification could be deposition of porphyrins in the pericardium. Surgical importance of this rare condition is highlighted.
October 2015: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/26132003/porphyria-diagnostics-part-1-a-brief-overview-of-the-porphyrias
#16
REVIEW
Vaithamanithi-Mudumbai Sadagopa Ramanujam, Karl Elmo Anderson
Porphyria diseases are a group of metabolic disorders caused by abnormal functioning of heme biosynthesis enzymes and characterized by excessive accumulation and excretion of porphyrins and their precursors. Precisely which of these chemicals builds up depends on the type of porphyria. Porphyria is not a single disease but a group of nine disorders: acute intermittent porphyria (AIP), hereditary coproporphyria (HCP), variegate porphyria (VP), δ-aminolevulinic acid dehydratase deficiency porphyria (ADP), porphyria cutanea tarda (PCT), hepatoerythropoietic porphyria (HEP), congenital erythropoietic porphyria (CEP), erythropoietic protoporphyria (EPP), and X-linked protoporphyria (XLP)...
July 1, 2015: Current Protocols in Human Genetics
https://www.readbyqxmd.com/read/25972160/inducing-iron-deficiency-improves-erythropoiesis-and-photosensitivity-in-congenital-erythropoietic-porphyria
#17
Daniel N Egan, Zhantao Yang, John Phillips, Janis L Abkowitz
Congenital erythropoietic porphyria (CEP) is an autosomal recessive disorder of heme synthesis characterized by reduced activity of uroporphyrinogen III synthase and the accumulation of nonphysiologic isomer I porphyrin metabolites, resulting in ineffective erythropoiesis and devastating skin photosensitivity. Management of the disease primarily consists of supportive measures. Increased activity of 5-aminolevulinate synthase 2 (ALAS2) has been shown to adversely modify the disease phenotype. Herein, we present a patient with CEP who demonstrated a remarkable improvement in disease manifestations in the setting of iron deficiency...
July 9, 2015: Blood
https://www.readbyqxmd.com/read/25372274/clinically-important-features-of-porphyrin-and-heme-metabolism-and-the-porphyrias
#18
REVIEW
Siddesh Besur, Wehong Hou, Paul Schmeltzer, Herbert L Bonkovsky
Heme, like chlorophyll, is a primordial molecule and is one of the fundamental pigments of life. Disorders of normal heme synthesis may cause human diseases, including certain anemias (X-linked sideroblastic anemias) and porphyrias. Porphyrias are classified as hepatic and erythropoietic porphyrias based on the organ system in which heme precursors (5-aminolevulinic acid (ALA), porphobilinogen and porphyrins) are chiefly overproduced. The hepatic porphyrias are further subdivided into acute porphyrias and chronic hepatic porphyrias...
November 3, 2014: Metabolites
https://www.readbyqxmd.com/read/25251786/congenital-erythropoietic-porphyria-linked-to-gata1-r216w-mutation-challenges-for-diagnosis
#19
Elena Di Pierro, Roberta Russo, Zeynep Karakas, Valentina Brancaleoni, Antonella Gambale, Ismail Kurt, S Stuart Winter, Francesca Granata, David Rodriguez Czuchlewski, Concetta Langella, Achille Iolascon, Maria Domenica Cappellini
Congenital erythropoietic porphyria (CEP) is a rare genetic disease that is characterized by a severe cutaneous photosensitivity causing unrecoverable deformities, chronic hemolytic anemia requiring blood transfusion program, and by fatal systemic complications. A correct and early diagnosis is required to develop a management plan that is appropriate to the patient's needs. Recently only one case of X-linked CEP had been reported, describing the trans-acting GATA1-R216W mutation. Here, we have characterized two novel X-linked CEP patients, both with misleading hematological phenotypes that include dyserythropoietic anemia, thrombocytopenia, and hereditary persistence of fetal hemoglobin...
June 2015: European Journal of Haematology
https://www.readbyqxmd.com/read/24925316/tuning-intracellular-homeostasis-of-human-uroporphyrinogen-iii-synthase-by-enzyme-engineering-at-a-single-hotspot-of-congenital-erythropoietic-porphyria
#20
Fredj ben Bdira, Esperanza González, Paula Pluta, Ana Laín, Arantza Sanz-Parra, Juan Manuel Falcon-Perez, Oscar Millet
Congenital erythropoietic porphyria (CEP) results from a deficiency in uroporphyrinogen III synthase enzyme (UROIIIS) activity that ultimately stems from deleterious mutations in the uroS gene. C73 is a hotspot for these mutations and a C73R substitution, which drastically reduces the enzyme activity and stability, is found in almost one-third of all reported CEP cases. Here, we have studied the structural basis, by which mutations in this hotspot lead to UROIIIS destabilization. First, a strong interdependency is observed between the volume of the side chain at position 73 and the folded protein...
November 1, 2014: Human Molecular Genetics
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