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https://www.readbyqxmd.com/read/27804912/emerging-therapies-for-acute-intermittent-porphyria
#1
Antonio Fontanellas, Matías A Ávila, Pedro Berraondo
Acute intermittent porphyria (AIP) is an autosomal dominant metabolic disease caused by hepatic deficiency of hydroxymethylbilane synthase (HMBS), the third enzyme of the heme synthesis pathway. The dominant clinical feature is acute neurovisceral attack associated with high production of potentially neurotoxic porphyrin precursors due to increased hepatic heme consumption. Current Standard of Care is based on a down-regulation of hepatic heme synthesis using heme therapy. Recurrent hyper-activation of the hepatic heme synthesis pathway affects about 5% of patients and can be associated with neurological and metabolic manifestations and long-term complications including chronic kidney disease and increased risk of hepatocellular carcinoma...
November 2, 2016: Expert Reviews in Molecular Medicine
https://www.readbyqxmd.com/read/27799046/targeting-the-nrf2-heme-oxygenase-1-axis-after-intracerebral-hemorrhage
#2
Jing Chen-Roetling, Raymond F Regan
BACKGROUND: Injury to cells adjacent to an intracerebral hemorrhage (ICH) is likely mediated at least in part by toxins released from the hematoma that initiate complex and interacting injury cascades. Pharmacotherapies targeting a single toxin or pathway, even if consistently effective in controlled experimental models, have a high likelihood of failure in a variable clinical setting. Nuclear factor erythroid-2 related factor 2 (Nrf2) regulates the expression of heme oxygenase-1 (HO-1) and multiple other proteins with antioxidant and anti-inflammatory effects, and may be a target of interest after ICH...
October 27, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27748034/development-of-bullous-pemphigoid-during-the-haemodialysis-of-a-young-man-case-report-and-literature-survey
#3
Katarzyna Osipowicz, Agnieszka Kalinska-Bienias, Cezary Kowalewski, Katarzyna Wozniak
Haemodialysis is the most frequent form of renal replacement therapy (RRT) in patients with end-stage renal disorder (ESRD). Patients with ESRD frequently develop skin problems, mainly xerosis, pruritus and hyperpigmentation, as well as bullous diseases, mainly porphyria or pseudoporphyria and, in some cases, bullous pemphigoid (BP). BP is the most common autoimmune sub-epidermal blistering disease, and it predominantly affects elderly people. Clinically, BP is characterised by generalised pruritic, bullous eruptions and urticaria-like lesions...
October 17, 2016: International Wound Journal
https://www.readbyqxmd.com/read/27627571/clinical-biochemical-and-molecular-characteristics-of-the-main-types-of-porphyria
#4
REVIEW
Urszula Szlendak, Ksenia Bykowska, Agnieszka Lipniacka
Porphyrias are diverse disorders that arise from various inherited enzyme defects in the heme biosynthesis pathway, except for porphyria cutanea tarda (PCT), in which the enzyme deficiency in most cases is acquired. The biosynthetic blocks resulting from the defective enzymes are largely expressed either in the liver or bone marrow, the sites where the majority of heme is produced. Although the pathophysiologic mechanisms of the clinical manifestations of the porphyrias are not fully understood, two cardinal features prevail: skin photosensitivity and neurologic symptoms of intermittent autonomic neuropathy, acute neurovisceral attacks, and disorders of the nervous system...
March 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/27608785/guillain-barr%C3%A3-syndrome-systemic-lupus-erythematosus-and-acute-intermittent-porphyria-a-deadly-trio
#5
Ankita D Patil, Niteen D Karnik, Milind Y Nadkar, Vishal A Gupta, Krithika Muralidhara, Suresh Passidhi
Peripheral nervous system involvement occurs in 3-18% patients of systemic lupus erythematosus (SLE) cases. American College of Rheumatology (ACR) includes 19 neuropsychiatric syndromes for diagnosis of SLE divided into neurological syndromes of central, peripheral and autonomic nervous systems along with the psychiatric syndromes. Sensorimotor quadriparesis in a suspected case of SLE could be due to a Guillain Barré (GBS)-like illness, mononeuritis multiplex presenting as plexopathies, an anterior spinal artery syndrome or it can present like an acute transverse myelitis or hypokalemic periodic paralysis related to Sjogren's syndrome with renal tubular acidosis...
November 2015: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27558376/acute-intermittent-porphyria-related-leukoencephalopathy
#6
Sietske H Kevelam, Rochus A Neeleman, Quinten Waisfisz, Edith C H Friesema, Janneke G Langendonk, Marjo S van der Knaap
OBJECTIVE: To identify the genetic etiology of a distinct leukoencephalopathy with autosomal recessive inheritance in a single family. METHODS: We analyzed available MRIs and retrospectively reviewed clinical information and laboratory investigations. We performed whole-exome sequencing to find the causal gene variants. RESULTS: We identified 3 family members with a similar MRI pattern characterized by symmetrical signal abnormalities in the periventricular and deep cerebral white matter, thalami, and central part of the pons...
September 20, 2016: Neurology
https://www.readbyqxmd.com/read/27277587/acute-intermittent-porphyria-leading-to-posterior-reversible-encephalopathy-syndrome-pres-a-rare-cause-of-abdominal-pain-and-seizures
#7
Andrew Dagens, Michael James Gilhooley
Acute intermittent porphyria (AIP) is an inherited deficiency in the haem biosynthesis pathway. AIP is rare, affecting around 1 in 75 000 people. Acute attacks are characterised by abdominal pain associated with autonomic, neurological and psychiatric symptoms. AIP is rarely associated with posterior reversible encephalopathy syndrome (PRES). PRES is a clinicoradiological condition caused by the failure of the posterior circulation to autoregulate, resulting in cerebral oedema, headaches, nausea and seizures...
2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27125415/acute-intermittent-porphyria-exacerbation-following-in%C3%A2-vitro-fertilization-treatment
#8
Geok Huey New, Pei-Yang Hsu, Meng-Hsing Wu
OBJECTIVES: Assisted reproductive technology is commonly used for women with infertility. We report a case of acute intermittent porphyria associated with in vitro fertilization treatment. CASE REPORT: A 35-year-old woman with tubal factor infertility presented to our clinic with persistent low abdominal pain and hyponatremia after transvaginal oocyte retrieval. During admission, she experienced a generalized tonic-clonic seizure attacked following by dark brown color urine...
April 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/26774916/-porphyrias-and-haem-related-disorders
#9
K Peoc'h, C Martin-Schmitt, N Talbi, J-C Deybach, L Gouya, H Puy
The hereditary porphyrias comprise a group of eight metabolic disorders of the haem biosynthesis pathway characterised by acute neurovisceral symptoms, skin lesions or both. Each porphyria is caused by abnormal function of a separate enzymatic step resulting in a specific accumulation of haem precursors. Seven porphyrias are the consequence of a partial enzyme deficiency while a gain of function mechanism has been recently characterised in a novel porphyria. Acute porphyrias present with severe abdominal pain, nausea, constipation, confusion and seizure, which may be life threatening...
March 2016: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/26680773/cerebral-hypoperfusion-in-hereditary-coproporphyria-hcp-a-single-photon-emission-computed-tomography-spect-study
#10
Guido Valle, Claudio Carmine Guida, Michelangelo Nasuto, Manuela Totaro, Filippo Aucella, Vincenzo Frusciante, Lazzaro Di Mauro, Adele Potenza, Maria Savino, Mario Stanislao, Teresa Popolizio, Giuseppe Guglielmi, Vito Angelo Giagulli, Edoardo Guastamacchia, Vincenzo Triggiani
BACKGROUND: Hereditary Coproporphyria (HCP) is characterized by abdominal pain, neurologic symptoms and psychiatric disorders, even if it might remain asymptomatic. The pathophysiology of both neurologic and psychiatric symptoms is not fully understood. Therefore, aiming to evaluate a possible role of brain blood flow disorders, we have retrospectively investigated cerebral perfusion patterns in Single Photon Emission Computed Tomography (SPECT) studies in HCP patients. MATERIALS & METHODS: We retrospectively evaluated the medical records of patients diagnosed as being affected by HCP...
2016: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/26357631/acute-hepatic-porphyria
#11
REVIEW
D Montgomery Bissell, Bruce Wang
The porphyrias comprise a set of diseases, each representing an individual defect in one of the eight enzymes mediating the pathway of heme synthesis. The diseases are genetically distinct but have in common the overproduction of heme precursors. In the case of the acute (neurologic) porphyrias, the cause of symptoms appears to be overproduction of a neurotoxic precursor. For the cutaneous porphyrias, it is photosensitizing porphyrins. Some types have both acute and cutaneous manifestations. The clinical presentation of acute porphyria consists of abdominal pain, nausea, and occasionally seizures...
March 2015: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/26335277/the-impact-of-gonadal-hormones-on-the-expression-of-human-neurological-disorders
#12
Hyman M Schipper
The effects of gonadal steroids on neurological well-being and disease constitute a rich and rapidly expanding area of basic and clinical neuroscience. Gonadal hormones exert potent effects on monoaminergic, cholinergic and peptidergic pathways as well as neurosteroidogenesis which, in turn, impact normal brain organization and function. A spectrum of human neurological conditions are influenced by hormonal fluctuations associated with the menstrual cycle, pregnancy, the menopause and use of oral contraceptives...
2016: Neuroendocrinology
https://www.readbyqxmd.com/read/26330726/acute-intermittent-porphyria-diagnostic-dilemma-and-treatment-options
#13
Mohan Deep Kaur, Nita Hazarika, Namita Saraswat, Rajesh Sood
Acute intermittent porphyria (AIP) presents with diverse group of symptoms making its early diagnosis difficult. Delaying diagnosis and treatment of AIP can be fatal or can cause long term or permanent neurological damage. We present here a case report of AIP where the diagnosis was missed. The diversity of symptoms and details concerning the treatment options for AIP are discussed.
July 2015: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/26248708/-treatable-neurometabolic-diseases-association-with-schizophrenia-spectrum-disorders
#14
REVIEW
Olivier Bonnot, Paula Herrera, Alice Kuster
Schizophrenia spectrum disorders are presented on 1% of subjects over general population. Organic pathologies prevalence in schizophrenia spectrum patients is not well determined, and it is probably underestimated. In the present update review, we are going to highlight seven treatable neurometabolic diseases (NMD) associated to sub-clinic neurological symptoms. It is not infrequent to witness the absence of any clinical neurological signs going along with the NMD. Psychiatric symptoms may be the only clinical alarm that can guide physicians to an acute diagnosis...
September 2015: La Presse Médicale
https://www.readbyqxmd.com/read/26131945/recognition-and-differential-diagnosis-of-psychosis-in-primary-care
#15
REVIEW
Kim S Griswold, Paula A Del Regno, Roseanne C Berger
Psychosis is a symptom complex that may include hallucinations, delusions, disorders of thought, and disorganized speech or behavior. Acute psychosis is primary if it is symptomatic of a psychiatric disorder, or secondary if caused by a specific medical condition. Patients with primary psychiatric disorders are likely to have auditory hallucinations, prominent cognitive disorders, and complicated delusions. If psychosis is caused by a medical condition, the patient may exhibit cognitive changes and abnormal vital signs, and may have visual hallucinations...
June 15, 2015: American Family Physician
https://www.readbyqxmd.com/read/26071363/mitochondrial-energetic-defects-in-muscle-and-brain-of-a-hmbs-mouse-model-of-acute-intermittent-porphyria
#16
Chadi Homedan, Caroline Schmitt, Jihane Laafi, Naïg Gueguen, Valérie Desquiret-Dumas, Hugo Lenglet, Zoubida Karim, Laurent Gouya, Jean-Charles Deybach, Gilles Simard, Hervé Puy, Yves Malthièry, Pascal Reynier
Acute intermittent porphyria (AIP), an autosomal dominant metabolic disease (MIM #176000), is due to a deficiency of hydroxymethylbilane synthase (HMBS), which catalyzes the third step of the heme biosynthetic pathway. The clinical expression of the disease is mainly neurological, involving the autonomous, central and peripheral nervous systems. We explored mitochondrial oxidative phosphorylation (OXPHOS) in the brain and skeletal muscle of the Hmbs(-/-) mouse model first in the basal state (BS), and then after induction of the disease with phenobarbital and treatment with heme arginate (HA)...
September 1, 2015: Human Molecular Genetics
https://www.readbyqxmd.com/read/25988062/porphyria-and-anorexia-cause-and-effect
#17
Carlos R Martins, Barbara E S Bandeira, Alberto R M Martinez, Paulo Dalgalarrondo, Marcondes C França
Porphyrias are hereditary disorders related to impaired biosynthesis of heme and characterized by multisystemic manifestations. Acute intermittent porphyria (AIP) is the most common acute subtype of the disease, and often associated with psychiatric symptoms. We here report a patient who developed acute flaccid paralysis after remarkable weight loss, which was related to an eating disorder (anorexia nervosa). After an extensive neurologic workup, he was diagnosed with AIP. This case emphasizes a deleterious vicious cycle between AIP and anorexia: porphyria may lead to anorexia and the carbohydrate restriction may lead to recurrent porphyric attacks...
December 2014: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/25787008/novel-a219p-mutation-of-hydroxymethylbilane-synthase-identified-in-a-chinese-woman-with-acute-intermittent-porphyria-and-syndrome-of-inappropriate-antidiuretic-hormone
#18
Yingjie Li, Hua Qu, Hang Wang, Huacong Deng, Ziyan Liu
Acute intermittent porphyria (AIP) is an autosomal dominant metabolic disorder caused by deficiency of the heme biosynthetic enzyme hydroxymethylbilane synthase (approved gene symbol HMBS), also known as porphobilinogen deaminase (PBGD). AIP is characterised by intermittent attacks of abdominal pain, vomiting, and neurological complaints. The highly variable symptomatic presentation of AIP causes confusion with other diseases and results in a high misdiagnosis rate (68% in China) and delayed effective treatments...
July 2015: Annals of Human Genetics
https://www.readbyqxmd.com/read/25745302/the-neuropsychiatric-ailment-of-vincent-van-gogh
#19
Kalyan B Bhattacharyya, Saurabh Rai
Vincent Van Gogh is one of the most celebrated creative artists of all time. All his life, he was afflicted by some kind of neurological or psychiatric disorder, which remains a mystery even today. Many historians and his personal physicians believe that he suffered from epilepsy while others felt that he was affected by Ménière's disease. Features such as hypergraphia, atypical sexuality, and viscosity of thinking suggest the possibility of Gastaut-Geschwind phenomenon, a known complication of complex partial seizure...
January 2015: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/25697467/acute-porphyria-in-a-patient-with-arnold-chiari-malformation
#20
Jianbin Shen, Kevin O'Keefe, Lisa B Webb, Angela DeGirolamo
BACKGROUND: Acute porphyria and Arnold Chiari malformation are both uncommon genetic disorders without known association. The insidious onset, non-specific clinical manifestations, and precipitating factors often cause diagnosis of acute porphyria to be missed, particularly in patients with comorbidities. CASE REPORT: A women with Arnold Chiari malformation type II who was treated with oxybutynin and antibiotics, including Bactrim for neurogenic bladder and recurrent urinary tract infection, presented with non-specific abdominal pain, constipation, and diarrhea...
2015: American Journal of Case Reports
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