Results 11 to 20 of about 5,389 (175)

Liver Transplantation and Other Hepatically Directed Therapies Do Not Change the Biochemical Phenotype nor Halt Progression of Leukodystrophy due to Biallelic <i>HMBS</i> Variants: A Case Report. [PDF]

JIMD Rep
ABSTRACT Leukodystrophy due to biallelic HMBS variants is a rare condition distinct from acute intermittent porphyria (AIP). It is characterised by progressive leukoencephalopathy rather than acute attacks of neurovisceral symptoms. We report the ongoing clinical progression of a patient with leukodystrophy due to homozygous variants in HMBS [c.251C>A,
Clark J, Smith J, Leong Y, Cronin V, Winship I, Ross G, Fazio T.   +6 more
europepmc   +2 more sources

New cases of δ-aminolevulinic acid dehydratase deficiency: Functional insights into gene variants using an innovative mouse liver model. [PDF]

J Intern Med
Abstract Background Dysfunction of δ‐aminolevulinic acid dehydratase (ALAD), the second enzyme involved in heme biosynthesis, leads to two pathologies: genetic and acquired. The genetic form is an ultrarare, severe childhood‐onset disease inherited in an autosomal recessive manner, whereas the acquired form usually affects adults due to enzyme ...
Di Pierro E, Solares I, Jericó D, Castelbón FJ, Solera JT, Riera-Mestre A, Barreda-Sánchez M, Poci C, Nicolli A, Urigo F, Sampedro A, de Salamanca RE, Marcacci M, Ávila MA, Harper P, Fanlo-Maresma MG, Guillén-Navarro E, Graziadei G, Wenzel A, Beck BB, Ventura P, Morales-Conejo M, Fontanellas A.   +22 more
europepmc   +2 more sources

Persistent Beetroot Colored Urine in a Three-Year-Old Child: A Case Report. [PDF]

Clin Case Rep
Clinically manifest porphyria cutanea tarda (PCT) is rare in children. Of ~1400 cases diagnosed at Porphyria Center Sweden, only five were children, all with pathogenic UROD variants and HFE homozygous. Diagnosis is often delayed; in our case, beetroot‐red urine prompted suspicion despite the absence of cutaneous symptoms.
Harper P, Törnhage CJ, Sardh E.
europepmc   +2 more sources

Neurological manifestations of acute intermittent porphyria: Case series and current review

Apollo Medicine, 2020
Background: Porphyrias are a group of inherited metabolic disorders, resulting from the deficiency of specific enzyme in the hemebiosynthesis. Among these, acute intermittent porphyria (AIP) is the most common type with neuropsychiatric features ...
Rahi Kiran Bhattiprolu, Vijay Sardana
doaj   +1 more source

Kidney Involvement in Acute Hepatic Porphyrias: Pathophysiology and Diagnostic Implications

Diagnostics, 2021
Porphyrias are a group of rare disorders originating from an enzyme dysfunction in the pathway of heme biosynthesis. Depending on the specific enzyme involved, porphyrias manifest under drastically different clinical pictures.
Andrea Ricci, Claudio Carmine Guida, Paola Manzini, Chiara Cuoghi, Paolo Ventura   +4 more
doaj   +1 more source

Derivative Matrix-Isopotential Synchronous Spectrofluorimetry and Hantzsch Reaction: A Direct Route to Simultaneous Determination of Urinary δ-Aminolevulinic Acid and Porphobilinogen

Frontiers in Chemistry, 2022
Early and sensitive detection of δ-aminolevulinic acid (δ-ALA) and porphobilinogen (PBG) is the cornerstone of diagnosis and effective treatment for acute porphyria. However, at present, the quantifying strategies demand multiple solvent extraction steps
Muhammad Ajmal, Jia-Wen Wei, Yan Zhao, Yi-Hong Liu, Ping-Ping Wu, Yao-Qun Li   +5 more
doaj   +1 more source

Acute intermittent porphyria in a 23-year-old man: case report

Revista Médica de Minas Gerais, 2023
Introduction: Porphyrias are metabolic disorders caused by enzymatic alterations in the biosynthesis of the heme group of heme proteins. The clinical spectrum of porphyrias is associated with the location of the damage in the heme formation chain ...
Tarcísio Silva Borborema, Leticia Utsch Araujo, Manoel Bruno Pereira Lima, Lucas Muller Fonseca, Juliana Mattos Tavares   +4 more
doaj   +1 more source

The Synthesis of a Pyrazol Analogon of Porphobilinogen with the Help of the Mukaiyama Aldol Reaction

CHIMIA, 2003
The synthesis of a pyrazol analogon of porphobilinogen is described. The Mukaiyama crossed aldol reaction is the key step of our approach.
André Chaperon, Hugo Bertschy, Anne-Laurence Franz-Schrumpf, Bertrand Hugelet, Antonia Neels, Helen Stoeckli-Evans, Reinhard Neier   +6 more
doaj   +1 more source

Characterization of porphobilinogen deaminase mutants reveals that arginine-173 is crucial for polypyrrole elongation mechanism

iScience, 2021
Summary: Porphobilinogen deaminase (PBGD), the third enzyme in the heme biosynthesis, catalyzes the sequential coupling of four porphobilinogen (PBG) molecules into a heme precursor. Mutations in PBGD are associated with acute intermittent porphyria (AIP)
Helene J. Bustad, Juha P. Kallio, Mikko Laitaoja, Karen Toska, Inari Kursula, Aurora Martinez, Janne Jänis   +6 more
doaj   +1 more source

Acute Intermittent Porphyria: Flaccid Quadriplegia and Encephalopathy due to Posterior Reversible Encephalopathy Syndrome (PRES) [PDF]

Liaquat National Journal of Primary Care
A deficiency of the enzyme HMB Hydroxymethylbilane synthase function, also known as porphobilinogen deaminase, leads to the emergence of acute intermittent porphyria (AIP). AIP is an uncommon form of hepatic porphyria inherited in an autosomal dominant
Saba Zaidi, Ayesha Abdul Samad, Ayesha Jaka   +2 more
doaj   +1 more source