1
|
Insights into S-adenosyl-l-methionine (SAM)-dependent methyltransferase related diseases and genetic polymorphisms. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2021; 788:108396. [PMID: 34893161 DOI: 10.1016/j.mrrev.2021.108396] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 10/03/2021] [Accepted: 10/05/2021] [Indexed: 12/11/2022]
Abstract
Enzymatic methylation catalyzed by methyltransferases has a significant impact on many human biochemical reactions. As the second most ubiquitous cofactor in humans, S-adenosyl-l-methionine (SAM or AdoMet) serves as a methyl donor for SAM-dependent methyltransferases (MTases), which transfer a methyl group to a nucleophilic acceptor such as O, As, N, S, or C as the byproduct. SAM-dependent methyltransferases can be grouped into different types based on the substrates. Here we systematically reviewed eight types of methyltransferases associated with human diseases. Catechol O-methyltransferase (COMT), As(III) S-adenosylmethionine methyltransferase (AS3MT), indolethylamine N-methyltransferase (INMT), phenylethanolamine N-methyltransferase (PNMT), histamine N-methyltransferase (HNMT), nicotinamide N-methyltransferase (NNMT), thiopurine S-methyltransferase (TPMT) and DNA methyltansferase (DNMT) are classic SAM-dependent MTases. Correlations between genotypes and disease susceptibility can be partially explained by genetic polymorphisms. The physiological function, substrate specificity, genetic variants and disease susceptibility associated with these eight SAM-dependent methyltransferases are discussed in this review.
Collapse
|
2
|
Alharbi RM. Hydroclathrus clathratus as anti-damaging agent against lung injury in male albino rats. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2020. [DOI: 10.1186/s43088-020-00045-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The present investigation is designed to evaluate the antioxidant and protective efficacy of the brown alga, Hydroclathrus clathratus (C.Agardh) M. Howe, against copper-induced lung injury in male albino rats. The present study was carried out on 24 adult male albino rats, they were randomly divided into four groups (n = 6) (A group, control rats; B group, rats received 100 mg/kg body weight of H. clathratus ethanolic extract; C group, rats augmented with 100 mg/kg body weight of CuSO4; and D group, rats were supplemented with 100 mg/kg of CuSO4 and 100 mg/kg of H. clathratus ethanolic extract). All the experimental treatments were given orally and daily for 28 days.
Results
It was showing that Cu treatment was found to induce lung toxicity, histopathologically, Cu revealed severe degenerative and necrotic lesions in the lung. Also, Cu caused a significant decrease in glutathione-S-transferase (GST) count and glutathione (GSH); meanwhile, malondialdehyde (MDA) content was increased. Consistently, mRNA and protein expression levels of proapoptotic (caspase-3 and Bax) marker showed a significant upregulation, whereas the anti-apoptotic (Bcl-2) level was significantly downregulated in lung tissues of CuSO4-intubated groups. Moreover, H. clathratus plus CuSO4-treated group showed improvement in the histopathological changes of lung injury. The bronchi and bronchioles appeared like those of the control, where the alveoli showed thin septa in some parts and thickened septa in other parts.
Conclusion
Findings revealed that the natural antioxidant activity of H. clathratus could protect the lung tissue from the damage produced by CuSO4.
Collapse
|
3
|
Association of Diamine oxidase (DAO) variants with the risk for migraine from North Indian population. Meta Gene 2020. [DOI: 10.1016/j.mgene.2019.100619] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
|
4
|
Kang SW, Kim SK, Han YR, Hong D, Chon J, Chung JH, Hong SJ, Park MS, Ban JY. Promoter Polymorphism (-308G/A) of Tumor Necrosis Factor-Alpha ( TNF-α) Gene and Asthma Risk: An Updated Meta-Analysis. Genet Test Mol Biomarkers 2019; 23:363-372. [PMID: 31161819 DOI: 10.1089/gtmb.2018.0238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background and Aims: The relationship between the promoter polymorphism (-308G/A) of the tumor necrosis factor-alpha (TNF-α) gene and the susceptibility to asthma has been tested in several studies. However, the results have been inconsistent. Therefore, we performed an updated meta-analysis to evaluate the relationship between this promoter polymorphism of the TNF-α gene and the risk of asthma. Methods: Fifty case-control studies were included in this meta-analysis which provided 17,937 controls and 9961 asthma patients. The pooled p-value, odds ratio (OR), and 95% confidence interval (95% CI) were used to investigate the strength of the association of this polymorphism of the TNF-α gene with the risk of asthma. The meta-analysis was carried out by Comprehensive Meta-Analysis software. Results: The results of our meta-analysis revealed that the TNF-α polymorphism (-308, G/A) was strongly associated with the risk of asthma (p < 0.05 in the allelic, dominant, and recessive models, respectively). In further analyses, based on age group and ethnicity, we observed this association for all subpopulations examined (p < 0.05 in allelic, dominant, and recessive models, respectively). Conclusion: This large-scale meta-analysis supports a strong association between the TNF-α gene promoter polymorphism (-308G/A) and the development to asthma in both children and adults.
Collapse
Affiliation(s)
- Sang Wook Kang
- 1 Department of Dental Pharmacology, School of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Su Kang Kim
- 2 Department of Biomedical Laboratory Science, Catholic Kwandong University, Gangneung, Republic of Korea
| | - Young Rok Han
- 3 Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - DongWhan Hong
- 3 Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jinmann Chon
- 3 Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Joo-Ho Chung
- 4 Kohwang Medical Research Institute, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Seoung-Jin Hong
- 5 Department of Prosthodontics, Kyung Hee University Dental Hospital, Seoul, Republic of Korea
| | - Min-Su Park
- 6 Department of Surgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Ju Yeon Ban
- 1 Department of Dental Pharmacology, School of Dentistry, Dankook University, Cheonan, Republic of Korea
| |
Collapse
|
5
|
Kucher AN. Association of Polymorphic Variants of Key Histamine Metabolism Genes and Histamine Receptor Genes with Multifactorial Diseases. RUSS J GENET+ 2019. [DOI: 10.1134/s102279541907010x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
6
|
Histamine N-Methyltransferase in the Brain. Int J Mol Sci 2019; 20:ijms20030737. [PMID: 30744146 PMCID: PMC6386932 DOI: 10.3390/ijms20030737] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/08/2019] [Accepted: 02/08/2019] [Indexed: 12/13/2022] Open
Abstract
Brain histamine is a neurotransmitter and regulates diverse physiological functions. Previous studies have shown the involvement of histamine depletion in several neurological disorders, indicating the importance of drug development targeting the brain histamine system. Histamine N-methyltransferase (HNMT) is a histamine-metabolising enzyme expressed in the brain. Although pharmacological studies using HNMT inhibitors have been conducted to reveal the direct involvement of HNMT in brain functions, HNMT inhibitors with high specificity and sufficient blood–brain barrier permeability have not been available until now. Recently, we have phenotyped Hnmt-deficient mice to elucidate the importance of HNMT in the central nervous system. Hnmt disruption resulted in a robust increase in brain histamine concentration, demonstrating the essential role of HNMT in the brain histamine system. Clinical studies have suggested that single nucleotide polymorphisms of the human HNMT gene are associated with several brain disorders such as Parkinson’s disease and attention deficit hyperactivity disorder. Postmortem studies also have indicated that HNMT expression is altered in human brain diseases. These findings emphasise that an increase in brain histamine levels by novel HNMT inhibitors could contribute to the improvement of brain disorders.
Collapse
|
7
|
De Marchis ML, Guadagni F, Silvestris E, Lovero D, Della-Morte D, Ferroni P, Barbanti P, Palmirotta R. Genetic bases of the nutritional approach to migraine. Crit Rev Food Sci Nutr 2018. [PMID: 29517920 DOI: 10.1080/10408398.2018.1450215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Migraine is a common multifactorial and polygenic neurological disabling disorder characterized by a genetic background and associated to environmental, hormonal and food stimulations. A large series of evidence suggest a strong correlation between nutrition and migraine and indicates several commonly foods, food additives and beverages that may be involved in the mechanisms triggering the headache attack in migraine-susceptible persons. There are foods and drinks, or ingredients of the same, that can trigger the migraine crisis as well as some foods play a protective function depending on the specific genetic sensitivity of the subject. The recent biotechnological advances have enhanced the identification of some genetic factors involved in onset diseases and the identification of sequence variants of genes responsible for the individual sensitivity to migraine trigger-foods. Therefore many studies are aimed at the analysis of polymorphisms of genes coding for the enzymes involved in the metabolism of food factors in order to clarify the different ways in which people respond to foods based on their genetic constitution. This review discusses the latest knowledge and scientific evidence of the role of gene variants and nutrients, food additives and nutraceuticals interactions in migraine.
Collapse
Affiliation(s)
- Maria Laura De Marchis
- a Biobanca InterIstituzionale Multidisciplinare, IRCCS San Raffaele Pisana , Rome , Italy.,b Biotechnology Unit, Istituto Zooprofilattico Sperimentale del Lazio e della Toscana 'M. Aleandri' , Rome , Italy
| | - Fiorella Guadagni
- a Biobanca InterIstituzionale Multidisciplinare, IRCCS San Raffaele Pisana , Rome , Italy.,c Department of Human Sciences and Quality of Life Promotion, San Raffaele Roma Open University , Rome , Italy
| | - Erica Silvestris
- d Department of Biomedical Sciences & Human Oncology, University of Bari 'Aldo Moro' , Bari , Italy
| | - Domenica Lovero
- d Department of Biomedical Sciences & Human Oncology, University of Bari 'Aldo Moro' , Bari , Italy
| | - David Della-Morte
- c Department of Human Sciences and Quality of Life Promotion, San Raffaele Roma Open University , Rome , Italy.,e Department of Systems Medicine University of Rome "Tor Vergata" , Rome , Italy
| | - Patrizia Ferroni
- a Biobanca InterIstituzionale Multidisciplinare, IRCCS San Raffaele Pisana , Rome , Italy.,c Department of Human Sciences and Quality of Life Promotion, San Raffaele Roma Open University , Rome , Italy
| | - Piero Barbanti
- f Headache and Pain Unit, Department of Neurological, Motor and Sensorial Sciences, IRCCS San Raffaele Pisana , Rome , Italy
| | - Raffaele Palmirotta
- d Department of Biomedical Sciences & Human Oncology, University of Bari 'Aldo Moro' , Bari , Italy
| |
Collapse
|
8
|
Chen Y, Cao B, Ou R, Wei Q, Chen X, Zhao B, Wu Y, Song W, Shang HF. Determining the Effect of the HNMT, STK39, and NMD3 Polymorphisms on the Incidence of Parkinson’s Disease, Amyotrophic Lateral Sclerosis, and Multiple System Atrophy in Chinese Populations. J Mol Neurosci 2018; 64:574-580. [DOI: 10.1007/s12031-018-1048-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/20/2018] [Indexed: 12/13/2022]
|
9
|
Maw HH, Zeng X, Campbell S, Taub ME, Teitelbaum AM. N-Methylation of BI 187004 by Thiol S-Methyltransferase. Drug Metab Dispos 2018. [PMID: 29514826 DOI: 10.1124/dmd.117.079764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
BI 187004, an 11β-hydroxysteroid dehydrogenase 1 inhibitor, was administered once daily for 14 days to eight patients with type 2 diabetes mellitus. N-methylation was identified as a major biotransformation pathway. In four patients treated with BI 187004, the plasma exposure of an N-methylbenzimidazole metabolite [N-methylbenzimidazole regioisomer 1 (M1)] was 7-fold higher than the remaining four patients, indicating a substantial degree of metabolic variation. To identify the methyltransferase enzymes responsible for N-methylation, BI 187004 was incubated with human liver microsomes (HLM), human kidney microsomes (HKM), and their respective cytosolic preparations in the presence and absence of isoform-selective chemical inhibitors. Additionally, BI 187004 was incubated with several human recombinant methyltransferases: catechol O-methyltransferase (rhCOMT), histamine N-methyltransferase (rhHNMT), nicotinamide N-methyltransferase (rhNNMT), glycine N-methyltransferase (rhGNMT), and thiopurine S-methyltransferase (rhTPMT). M1 was principally observed in HLM and HKM incubations, minimally formed in liver and kidney cytosol, and not formed during incubations with recombinant methyltransferase enzymes. In all microsomal and cytosolic incubations, the formation of M1 was inhibited only by 2,3-dichloro-α-methylbenzylamine (DCMB), an inhibitor of thiol S-methyltransferase (TMT), providing evidence that TMT catalyzed the formation of M1. Interestingly, the N-methylbenzimidazole regioisomer (M14) was only observed in vitro, predominantly during incubations with human kidney cytosol and rhHNMT. The formation of M14 was inhibited by amodiaquine (an HNMT inhibitor) and DCMB, providing additional evidence that both HNMT and TMT catalyzed M14 formation. Overall, using BI 187004 as a substrate, this study demonstrates a novel TMT-mediated N-methylation biotransformation and an HNMT-mediated regioselective N-methylation.
Collapse
Affiliation(s)
- Hlaing H Maw
- Drug Metabolism and Pharmacokinetics (H.H.M., M.E.T., A.M.T.), Chemical Development (X.Z.), and Material and Analytical Sciences (S.C.), Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut
| | - Xingzhong Zeng
- Drug Metabolism and Pharmacokinetics (H.H.M., M.E.T., A.M.T.), Chemical Development (X.Z.), and Material and Analytical Sciences (S.C.), Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut
| | - Scot Campbell
- Drug Metabolism and Pharmacokinetics (H.H.M., M.E.T., A.M.T.), Chemical Development (X.Z.), and Material and Analytical Sciences (S.C.), Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut
| | - Mitchell E Taub
- Drug Metabolism and Pharmacokinetics (H.H.M., M.E.T., A.M.T.), Chemical Development (X.Z.), and Material and Analytical Sciences (S.C.), Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut
| | - Aaron M Teitelbaum
- Drug Metabolism and Pharmacokinetics (H.H.M., M.E.T., A.M.T.), Chemical Development (X.Z.), and Material and Analytical Sciences (S.C.), Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut
| |
Collapse
|
10
|
Best J, Nijhout HF, Samaranayake S, Hashemi P, Reed M. A mathematical model for histamine synthesis, release, and control in varicosities. Theor Biol Med Model 2017; 14:24. [PMID: 29228949 PMCID: PMC5725884 DOI: 10.1186/s12976-017-0070-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 10/27/2017] [Indexed: 12/24/2022] Open
Abstract
Background Histamine (HA), a small molecule that is synthesized from the amino acid histidine, plays an important role in the immune system where it is associated with allergies, inflammation, and T-cell regulation. In the brain, histamine is stored in mast cells and other non-neuronal cells and also acts as a neurotransmitter. The histamine neuron cell bodies are in the tuberomammillary (TM) nucleus of the hypothalamus and these neurons send projections throughout the central nervous system (CNS), in particular to the cerebral cortex, amygdala, basal ganglia, hippocampus, thalamus, retina, and spinal cord. HA neurons make few synapses, but release HA from the cell bodies and from varicosities when the neurons fire. Thus the HA neural system seems to modulate and control the HA concentration in projection regions. It is known that high HA levels in the extracellular space inhibit serotonin release, so HA may play a role in the etiology of depression. Results We compare model predictions to classical physiological experiments on HA half-life, the concentration of brain HA after histidine loading, and brain HA after histidine is dramatically increased or decreased in the diet. The model predictions are also consistent with in vivo experiments in which extracellular HA is measured, using Fast Scan Cyclic Voltammetry, in the premammillary nucleus (PM) after a 2 s antidromic stimulation of the TM, both without and in the presence of the H3 autoreceptor antagonist thioperamide. We show that the model predicts well the temporal behavior of HA in the extracellular space over 30 s in both experiments. Conclusions Our ability to measure in vivo histamine dynamics in the extracellular space after stimulation presents a real opportunity to understand brain function and control. The observed extracellular dynamics depends on synthesis, storage, neuronal firing, release, reuptake, glial cells, and control by autoreceptors, as well as the behavioral state of the animal (for example, depression) or the presence of neuroinflammation. In this complicated situation, the mathematical model will be useful for interpreting data and conducting in silico experiments to understand causal mechanisms. And, better understanding can suggest new therapeutic drug targets.
Collapse
Affiliation(s)
- Janet Best
- Department of Mathematics, Ohio State University, 231 W 18th Ave, MW 614, Columbus, 43210, OH, USA.
| | - H F Nijhout
- Department of Biology, Duke University, Durham, 27708, NC, USA
| | - Srimal Samaranayake
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, 29208, SC, USA
| | - Parastoo Hashemi
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, 29208, SC, USA
| | - Michael Reed
- Department of Mathematics, Duke University, Durham, 27708, NC, USA
| |
Collapse
|
11
|
Asociación de polimorfismos de diaminoxidasa e histamina N metiltransferasa con la presencia, discapacidad y severidad de migraña en un grupo de madres mexicanas de niños alérgicos. Neurologia 2017; 32:500-507. [DOI: 10.1016/j.nrl.2016.02.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 01/23/2016] [Accepted: 02/27/2016] [Indexed: 02/03/2023] Open
|
12
|
Meza-Velázquez R, López-Márquez F, Espinosa-Padilla S, Rivera-Guillen M, Ávila-Hernández J, Rosales-González M. Association of diamine oxidase and histamine N-methyltransferase polymorphisms with presence of migraine in a group of Mexican mothers of children with allergies. NEUROLOGÍA (ENGLISH EDITION) 2017. [DOI: 10.1016/j.nrleng.2016.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
13
|
Schwelberger HG, Feurle J, Houen G. Mapping of the binding sites of human histamine N-methyltransferase (HNMT) monoclonal antibodies. Inflamm Res 2017; 66:1021-1029. [PMID: 28791419 PMCID: PMC5633628 DOI: 10.1007/s00011-017-1086-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/01/2017] [Accepted: 08/03/2017] [Indexed: 01/07/2023] Open
Abstract
Objective Recently, we characterized mouse monoclonal antibodies that allow the specific and sensitive detection of human histamine N-methyltransferase (HNMT). To understand differences in binding characteristics and recognition of enzyme variants we mapped the antibody binding sites. Methods Fragments of human HNMT were expressed as glutathione S-transferase fusion proteins that were used for testing antibody binding on immunoblots. Combined information from species cross-reactivity, sequence comparison, protein structure, and binding site prediction software were used to localize the epitope recognized by each antibody. Results All eight monoclonal HNMT antibodies bound to linear epitopes in the C-terminal domain of the 292 amino acid protein. Of the five antibodies cross-reacting with HNMT from other species, one bound region L182–T223, three region M224–E261, and one region L262–A292. All three antibodies recognising only human HNMT bound the C-terminal region L262–A292 that contains residues present only in the human protein. Conclusions Our HNMT monoclonal antibodies bind in three different regions of the protein and those binding the same putative epitope exhibit similar binding characteristics and species cross-reactivity. Antibodies binding non-overlapping epitopes will facilitate analyses of all clinically relevant variants described for HNMT.
Collapse
Affiliation(s)
- Hubert G Schwelberger
- Molecular Biology Laboratory, Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Schöpfstraße 41, 6020, Innsbruck, Austria.
| | - Johannes Feurle
- Molecular Biology Laboratory, Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Schöpfstraße 41, 6020, Innsbruck, Austria
| | - Gunnar Houen
- Department of Autoimmunology and Biomarkers, Statens Serum Institut, Artillerivej 5, 2300, Copenhagen, Denmark
| |
Collapse
|
14
|
Solismaa A, Kampman O, Lyytikäinen LP, Seppälä N, Viikki M, Mononen N, Lehtimäki T, Leinonen E. Histaminergic gene polymorphisms associated with sedation in clozapine-treated patients. Eur Neuropsychopharmacol 2017; 27:442-449. [PMID: 28400155 DOI: 10.1016/j.euroneuro.2017.03.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 03/02/2017] [Accepted: 03/23/2017] [Indexed: 02/06/2023]
Abstract
Sedation is a common adverse effect of clozapine treatment, which may be partly related to clozapine binding to histamine receptors in the central nervous system. The objective of this study was to investigate whether single nucleotide polymorphisms (SNPs) in the histaminergic system are associated with sedation in clozapine-treated patients. The study population comprised 237 clozapine-treated, Finnish, Caucasian patients that were diagnosed with schizophrenia and 176 were genotyped using Illumina HumanCoreExome-12 BeadChip. Sedation levels were assessed using self-rating questions from the Liverpool University Neuroleptic Side Effect Rating Scale (LUNSERS). The relationships between 55 different SNPs in the histaminergic system and adverse sedation effects were examined. SNPs were analyzed separately, and in groups, to formulate a genetic risk score (GRS). A permutation test was performed to avoid type I errors. Eight linked SNPs (r2 = 1) in the HNMT gene were also associated with sedation according to the GLM, adjusted for age, gender and BMI (false-discovery-rate-adjusted p = 0.013). An association on a trend level between a GRS of four different SNPs (recessive histamine N-methyltransferase HNMT rs2737385, additive histamine receptor H1 rs1552498, dominant HRH1 rs17034063 and recessive amine oxidase, copper containing 1 AOC1 rs6977381) and sedation was found (permuted p-value = 0.066) in a generalized linear model (GLM) incorporating age, gender and body mass index (BMI; adjusted R2 = 0.22). Polymorphisms in genes encoding histamine receptors or enzymes related to histamine metabolism may explain individual variation in sedative effects experienced during clozapine treatment.
Collapse
Affiliation(s)
- Anssi Solismaa
- University of Tampere, Faculty of Medicine and Life Sciences, Tampere, Finland; Seinäjoki Hospital District, Department of Psychiatry, Seinäjoki, Finland.
| | - Olli Kampman
- University of Tampere, Faculty of Medicine and Life Sciences, Tampere, Finland; Seinäjoki Hospital District, Department of Psychiatry, Seinäjoki, Finland
| | - Leo-Pekka Lyytikäinen
- University of Tampere, Faculty of Medicine and Life Sciences, Tampere, Finland; Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Niko Seppälä
- Tampere University Hospital, Department of Psychiatry, Tampere, Finland
| | - Merja Viikki
- University of Tampere, Faculty of Medicine and Life Sciences, Tampere, Finland
| | - Nina Mononen
- University of Tampere, Faculty of Medicine and Life Sciences, Tampere, Finland; Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Terho Lehtimäki
- University of Tampere, Faculty of Medicine and Life Sciences, Tampere, Finland; Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Esa Leinonen
- University of Tampere, Faculty of Medicine and Life Sciences, Tampere, Finland; Tampere University Hospital, Department of Psychiatry, Tampere, Finland
| |
Collapse
|
15
|
Lefèvre S, Astier C, Kanny G. Intolérance à l’histamine ou fausses allergies alimentaires de mécanisme histaminique. REVUE FRANCAISE D ALLERGOLOGIE 2017. [DOI: 10.1016/j.reval.2016.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
16
|
Jones BL, Sherwin CMT, Liu X, Dai H, Vyhlidal CA. Genetic Variation in the Histamine Production, Response, and Degradation Pathway Is Associated with Histamine Pharmacodynamic Response in Children with Asthma. Front Pharmacol 2017; 7:524. [PMID: 28101058 PMCID: PMC5209333 DOI: 10.3389/fphar.2016.00524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 12/15/2016] [Indexed: 01/05/2023] Open
Abstract
Introduction: There is growing knowledge of the wide ranging effects of histamine throughout the body therefore it is important to better understand the effects of this amine in patients with asthma. We aimed to explore the association between histamine pharmacodynamic (PD) response and genetic variation in the histamine pathway in children with asthma. Methods: Histamine Iontophoresis with Laser Doppler Monitoring (HILD) was performed in children with asthma and estimates for area under the effect curve (AUEC), maximal response over baseline (Emax), and time of Emax (Tmax) were calculated using non-compartmental analysis and non-linear mixed-effects model with a linked effect PK/PD model. DNA isolation and genotyping were performed among participants to detect known single nucleotide polymorphisms (SNPs) (n = 10) among genes (HDC, HNMT, ABP1, HRH1, HRH4) within the histamine pathway. General linear model was used to identify associations between histamine related genetic variants and measured histamine PD response parameters. Results: Genotyping and HILD response profiles were completed for 163 children. ABP1 47 C/T, ABP1 4107, and HNMT-1639 C/Twere associated with Emax (ABP1 47 CC genotype mean Emax 167.21 vs. CT/TT genotype mean Emax 139.20, p = 0.04; ABP1 4107 CC genotype mean Emax 141.72 vs. CG/GG genotype mean Emax 156.09, p = 0.005; HNMT-1639 CC genotype mean Emax 132.62 vs. CT/TT genotype mean Emax 155.3, p = 0.02). In a stratified analysis among African American children only, ABP1 and HNMT SNPs were also associated with PD response; HRH4 413 CC genotype was associated with lower Emax, p = 0.009. Conclusions: We show for the first time that histamine pathway genetic variation is associated with measureable changes in histamine response in children with asthma. The variability in histamine response and impact of histamine pathway genotype is important to further explore in patients with asthma so as to improve disease phenotyping leading to more personalized treatments.
Collapse
Affiliation(s)
- Bridgette L Jones
- Department of Pediatrics University of Missouri-Kansas City, Children's Mercy Hospitals and ClinicsKansas City, MO, USA; Division of Pediatric Pharmacology and Therapeutic Innovation, Children's Mercy Hospitals and ClinicsKansas City, MO, USA; Division of Allergy, Asthma and Clinical Immunology, Children's Mercy Hospitals and ClinicsKansas City, MO, USA; Children's Mercy Hospitals and ClinicsKansas City, MO, USA
| | - Catherine M T Sherwin
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of MedicineSalt Lake City, UT, USA; Department of Pharmacology and Toxicology, University of Utah College of PharmacySalt Lake City, UT, USA; University of Utah College of PharmacySalt Lake City, UT, USA
| | - Xiaoxi Liu
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of MedicineSalt Lake City, UT, USA; Department of Pharmacology and Toxicology, University of Utah College of PharmacySalt Lake City, UT, USA; University of Utah College of PharmacySalt Lake City, UT, USA
| | - Hongying Dai
- Department of Pediatrics University of Missouri-Kansas City, Children's Mercy Hospitals and ClinicsKansas City, MO, USA; Children's Mercy Hospitals and ClinicsKansas City, MO, USA; Division of Health Services and Outcomes Research, Children's Mercy Hospitals and ClinicsKansas City, MO, USA
| | - Carrie A Vyhlidal
- Department of Pediatrics University of Missouri-Kansas City, Children's Mercy Hospitals and ClinicsKansas City, MO, USA; Division of Pediatric Pharmacology and Therapeutic Innovation, Children's Mercy Hospitals and ClinicsKansas City, MO, USA; Children's Mercy Hospitals and ClinicsKansas City, MO, USA
| |
Collapse
|
17
|
Shan L, Bao AM, Swaab DF. Changes in Histidine Decarboxylase, Histamine N-Methyltransferase and Histamine Receptors in Neuropsychiatric Disorders. Handb Exp Pharmacol 2017; 241:259-276. [PMID: 28233178 DOI: 10.1007/164_2016_125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Compared to other monoamine neurotransmitters, information on the association between the histaminergic system and neuropsychiatric disorders is scarce, resulting in a lack of histamine-related treatment for these disorders. The current chapter tries to combine information obtained from genetic studies, neuroimaging, post-mortem human brain studies and cerebrospinal fluid measurements with data from recent clinical trials on histamine receptor agonists and antagonists, with a view to determining the possible role of the histaminergic system in neuropsychiatric disorders and to pave the way for novel histamine-related therapeutic strategies.
Collapse
Affiliation(s)
- Ling Shan
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of Ministry of Health of China, Zhejiang Province Key Laboratory of Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
- Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, University of Amsterdam, Meibergdreef 47, Amsterdam, 1105 BA, The Netherlands
| | - Ai-Min Bao
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of Ministry of Health of China, Zhejiang Province Key Laboratory of Neurobiology, Zhejiang University School of Medicine, Hangzhou, China.
| | - Dick F Swaab
- Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, University of Amsterdam, Meibergdreef 47, Amsterdam, 1105 BA, The Netherlands.
| |
Collapse
|
18
|
Leucine 208 in human histamine N-methyltransferase emerges as a hotspot for protein stability rationalizing the role of the L208P variant in intellectual disability. Biochim Biophys Acta Mol Basis Dis 2017; 1863:188-199. [DOI: 10.1016/j.bbadis.2016.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/20/2016] [Accepted: 10/11/2016] [Indexed: 11/19/2022]
|
19
|
Amo G, Cornejo-García JA, García-Menaya JM, Cordobes C, Torres MJ, Esguevillas G, Mayorga C, Martinez C, Blanca-Lopez N, Canto G, Ramos A, Blanca M, Agúndez JAG, García-Martín E. FCERI and Histamine Metabolism Gene Variability in Selective Responders to NSAIDS. Front Pharmacol 2016; 7:353. [PMID: 27746735 PMCID: PMC5040715 DOI: 10.3389/fphar.2016.00353] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 09/16/2016] [Indexed: 12/18/2022] Open
Abstract
The high-affinity IgE receptor (Fcε RI) is a heterotetramer of three subunits: Fcε RIα, Fcε RIβ, and Fcε RIγ (αβγ2) encoded by three genes designated as FCER1A, FCER1B (MS4A2), and FCER1G, respectively. Recent evidence points to FCERI gene variability as a relevant factor in the risk of developing allergic diseases. Because Fcε RI plays a key role in the events downstream of the triggering factors in immunological response, we hypothesized that FCERI gene variants might be related with the risk of, or with the clinical response to, selective (IgE mediated) non-steroidal anti-inflammatory (NSAID) hypersensitivity. From a cohort of 314 patients suffering from selective hypersensitivity to metamizole, ibuprofen, diclofenac, paracetamol, acetylsalicylic acid (ASA), propifenazone, naproxen, ketoprofen, dexketoprofen, etofenamate, aceclofenac, etoricoxib, dexibuprofen, indomethacin, oxyphenylbutazone, or piroxicam, and 585 unrelated healthy controls that tolerated these NSAIDs, we analyzed the putative effects of the FCERI SNPs FCER1A rs2494262, rs2427837, and rs2251746; FCER1B rs1441586, rs569108, and rs512555; FCER1G rs11587213, rs2070901, and rs11421. Furthermore, in order to identify additional genetic markers which might be associated with the risk of developing selective NSAID hypersensitivity, or which may modify the putative association of FCERI gene variations with risk, we analyzed polymorphisms known to affect histamine synthesis or metabolism, such as rs17740607, rs2073440, rs1801105, rs2052129, rs10156191, rs1049742, and rs1049793 in the HDC, HNMT, and DAO genes. No major genetic associations with risk or with clinical presentation, and no gene-gene interactions, or gene-phenotype interactions (including age, gender, IgE concentration, antecedents of atopy, culprit drug, or clinical presentation) were identified in patients. However, logistic regression analyses indicated that the presence of antecedents of atopy and the DAO SNP rs2052129 (GG) were strongly related (P < 0.001 and P = 0.005, respectively) with selective hypersensitivity to ibuprofen. With regard to patients with selective hypersensitivity to ASA, men were more prone to develop such a reaction than women (P = 0.011), and the detrimental DAO SNP rs10156191 in homozygosity increased the risk of developing such hypersensitivity (P = 0.039).
Collapse
Affiliation(s)
- Gemma Amo
- Departamento de Farmacología, Universidad de Extremadura Cáceres, Spain
| | - José A Cornejo-García
- Laboratorio de Investigación, Instituto de Investigación Biomédica de Málaga, Hospital Regional Universitario de Málaga, Universidad de Málaga Málaga, Spain
| | | | | | - M J Torres
- UGC de Alergia, Instituto de Investigación Biomédica de Málaga, Hospital Regional Universitario de Málaga, Universidad de Málaga Málaga, Spain
| | - Gara Esguevillas
- Departamento de Farmacología, Universidad de Extremadura Cáceres, Spain
| | - Cristobalina Mayorga
- Laboratorio de Investigación, Instituto de Investigación Biomédica de Málaga, Hospital Regional Universitario de Málaga, Universidad de Málaga Málaga, Spain
| | - Carmen Martinez
- Departamento de Farmacología, Universidad de Extremadura Cáceres, Spain
| | | | - Gabriela Canto
- Servicio de Alergologia, Hospital Infanta Leonor Madrid, Spain
| | - Alfonso Ramos
- Departamento de Matemáticas, Universidad de Extremadura Cáceres, Spain
| | - Miguel Blanca
- Servicio de Alergologia, Hospital Infanta Leonor Madrid, Spain
| | - José A G Agúndez
- Departamento de Farmacología, Universidad de Extremadura Cáceres, Spain
| | | |
Collapse
|
20
|
Meza-Velázquez R, López-Márquez F, Espinosa-Padilla S, Rivera-Guillen M, Gutíerrez-Díaz N, Pérez-Armendáriz L, Rosales-González M. Association between two polymorphisms of histamine-metabolising enzymes and the severity of allergic rhinitis in a group of Mexican children. Allergol Immunopathol (Madr) 2016; 44:433-8. [PMID: 27255477 DOI: 10.1016/j.aller.2016.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/23/2016] [Accepted: 01/29/2016] [Indexed: 01/22/2023]
Abstract
BACKGROUND It has been suggested that polymorphisms of histamine metabolising enzymes can be a risk factor for developing histamine-involving diseases. The aim of the present study is to research the possible association between two functional single nucleotide polymorphisms (SNPs): C314T in the Histamine-N-Methyl Transferase gene and C2029G in the Diamine Oxidase gene, with the severity of allergic rhinitis and the number of allergic diseases, in a group of allergic Mexican children. METHODS We studied 154 unrelated allergic children. SNPs were analysed by RT-PCR. The total serum IgE was measured by chemiluminescence and the serum histamine by ELISA. We used logistic regression analysis to determine OR. RESULTS Patients carrying the mutant allele for any SNP had more risk to develop higher rhinitis severity or a bigger number of allergic diseases. Haplotype analysis revealed that this effect is synergistic. In patients carrying one or two mutant alleles, serum histamine levels were higher than those of patients carrying only wild alleles. Serum IgE levels were not associated with the presence of mutant alleles. CONCLUSION The presence of these SNPs in patients with allergic rhinitis can lead to higher serum histamine, therefore to a higher risk of developing more severe symptoms or more associated allergic diseases, even if the serum IgE remains low.
Collapse
Affiliation(s)
- R Meza-Velázquez
- Facultad de Medicina, Universidad Juárez del Estado de Durango, Gómez Palacio, Durango, Mexico; Facultad de Medicina, Universidad Autonóma de Coahuila, Mexico
| | - F López-Márquez
- Facultad de Medicina, Universidad Autonóma de Coahuila, Mexico
| | | | - M Rivera-Guillen
- Facultad de Medicina, Universidad Autonóma de Coahuila, Mexico; Secretaría de Salud, Torreón, Coahuila, Mexico
| | | | | | - M Rosales-González
- Facultad de Medicina, Universidad Juárez del Estado de Durango, Gómez Palacio, Durango, Mexico.
| |
Collapse
|
21
|
Sadek B, Saad A, Sadeq A, Jalal F, Stark H. Histamine H3 receptor as a potential target for cognitive symptoms in neuropsychiatric diseases. Behav Brain Res 2016; 312:415-30. [PMID: 27363923 DOI: 10.1016/j.bbr.2016.06.051] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/22/2016] [Accepted: 06/26/2016] [Indexed: 01/27/2023]
Abstract
The potential contributions of the brain histaminergic system in neurodegenerative diseases, and the possiblity of histamine-targeting treatments is attracting considerable interests. The histamine H3 receptor (H3R) is expressed mainly in the central nervous system, and is, consequently, an attractive pharmacological target. Although recently described clinical trials have been disappointing in attention deficit hyperactivity disorder (ADHD) and schizophrenia (SCH), numerous H3R antagonists, including pitolisant, demonstrate potential in the treatment of narcolepsy, excessive daytime sleepiness associated with cognitive impairment, epilepsy, and Alzheimer's disease (AD). This review focuses on the recent preclinical as well as clinical results that support the relevance of H3R antagonists for the treatment of cognitive symptoms in neuropsychiatric diseases, namely AD, epilepsy and SCH. The review summarizes the role of histaminergic neurotransmission with focus on these brain disorders, as well as the effects of numerous H3R antagonists on animal models and humans.
Collapse
Affiliation(s)
- Bassem Sadek
- Department of Pharmacology & Therapeutics, College of Medicine & Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
| | - Ali Saad
- Department of Pharmacology & Therapeutics, College of Medicine & Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Adel Sadeq
- College of Pharmacy, Al Ain University of Science and Technology, Al Ain, United Arab Emirates
| | - Fakhreya Jalal
- Department of Pharmacology & Therapeutics, College of Medicine & Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Holger Stark
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University, Universitaetsstr. 1, 40225 Düsseldorf, Germany
| |
Collapse
|
22
|
Anvari S, Vyhlidal CA, Dai H, Jones BL. Genetic Variation along the Histamine Pathway in Children with Allergic versus Nonallergic Asthma. Am J Respir Cell Mol Biol 2016; 53:802-9. [PMID: 25909280 DOI: 10.1165/rcmb.2014-0493oc] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Histamine is an important mediator in the pathogenesis of asthma. Variation in genes along the histamine production, response, and degradation pathway may be important in predicting response to antihistamines. We hypothesize that differences exist among single-nucleotide polymorphisms (SNPs) in genes of the histamine pathway between children with allergic versus nonallergic asthma. Children (7-18 yr of age; n = 202) with asthma were classified as allergic or nonallergic based on allergy skin testing. Genotyping was performed to detect known SNPs (n = 10) among genes (HDC, HNMT, ABP1, HRH1, and HRH4) within the histamine pathway. Chi square tests and Cochran-Armitage Trend were used to identify associations between genetic variants and allergic or nonallergic asthma. Significance was determined by P < 0.05 and false-positive report probability. After correction for race differences in genotype were observed, HRH1-17 TT (6% allergic versus 0% nonallergic; P = 0.04), HNMT-464 TT (41% allergic versus 29% nonallergic; P = 0.04), and HNMT-1639 TT (30% allergic versus 20% nonallergic; P = 0.04) were overrepresented among children with allergic asthma. Genotype differences specifically among the African-American children were also observed: HRH1-17 TT (13% allergic versus 0% nonallergic; P = 0.04) and HNMT-1639 TT (23% allergic versus 3% nonallergic; P = 0.03) genotypes were overrepresented among African-American children with allergic asthma. Our study suggests that genetic variation within the histamine pathway may be associated with an allergic versus nonallergic asthma phenotype. Further studies are needed to determine the functional significance of identified SNPs and their impact on antihistamine response in patients with asthma and allergic disease.
Collapse
Affiliation(s)
- Sara Anvari
- 1 Division of Allergy/Asthma/Immunology.,2 Children's Mercy Hospital, and.,3 University of Missouri Kansas City, Kansas City, Missouri
| | - Carrie A Vyhlidal
- 4 Division of Pediatric Clinical Pharmacology and Therapeutic Innovation.,2 Children's Mercy Hospital, and.,3 University of Missouri Kansas City, Kansas City, Missouri
| | - Hongying Dai
- 5 Research Development and Clinical Investigation.,2 Children's Mercy Hospital, and.,3 University of Missouri Kansas City, Kansas City, Missouri
| | - Bridgette L Jones
- 1 Division of Allergy/Asthma/Immunology.,4 Division of Pediatric Clinical Pharmacology and Therapeutic Innovation.,2 Children's Mercy Hospital, and.,3 University of Missouri Kansas City, Kansas City, Missouri
| |
Collapse
|
23
|
Kovacova-Hanuskova E, Buday T, Gavliakova S, Plevkova J. Histamine, histamine intoxication and intolerance. Allergol Immunopathol (Madr) 2015; 43:498-506. [PMID: 26242570 DOI: 10.1016/j.aller.2015.05.001] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 05/06/2015] [Accepted: 05/07/2015] [Indexed: 11/16/2022]
Abstract
Excessive accumulation of histamine in the body leads to miscellaneous symptoms mediated by its bond to corresponding receptors (H1-H4). Increased concentration of histamine in blood can occur in healthy individuals after ingestion of foods with high contents of histamine, leading to histamine intoxication. In individuals with histamine intolerance (HIT) ingestion of food with normal contents of histamine causes histamine-mediated symptoms. HIT is a pathological process, in which the enzymatic activity of histamine-degrading enzymes is decreased or inhibited and they are insufficient to inactivate histamine from food and to prevent its passage to blood-stream. Diagnosis of HIT is difficult. Multi-faced, non-specific clinical symptoms provoked by certain kinds of foods, beverages and drugs are often attributed to different diseases, such as allergy and food intolerance, mastocytosis, psychosomatic diseases, anorexia nervosa or adverse drug reactions. Correct diagnosis of HIT followed by therapy based on histamine-free diet and supplementation of diamine oxidase can improve patient's quality of life.
Collapse
Affiliation(s)
- E Kovacova-Hanuskova
- Comenius University in Bratislava, Jessenius Faculty of Medicine, Department of Pathophysiology, Mala Hora, 036 01 Martin, Slovakia
| | - T Buday
- Comenius University in Bratislava, Jessenius Faculty of Medicine, Department of Pathophysiology, Mala Hora, 036 01 Martin, Slovakia
| | - S Gavliakova
- Comenius University in Bratislava, Jessenius Faculty of Medicine, Department of Pathophysiology, Mala Hora, 036 01 Martin, Slovakia
| | - J Plevkova
- Comenius University in Bratislava, Jessenius Faculty of Medicine, Department of Pathophysiology, Mala Hora, 036 01 Martin, Slovakia.
| |
Collapse
|
24
|
Heidari A, Tongsook C, Najafipour R, Musante L, Vasli N, Garshasbi M, Hu H, Mittal K, McNaughton AJM, Sritharan K, Hudson M, Stehr H, Talebi S, Moradi M, Darvish H, Arshad Rafiq M, Mozhdehipanah H, Rashidinejad A, Samiei S, Ghadami M, Windpassinger C, Gillessen-Kaesbach G, Tzschach A, Ahmed I, Mikhailov A, Stavropoulos DJ, Carter MT, Keshavarz S, Ayub M, Najmabadi H, Liu X, Ropers HH, Macheroux P, Vincent JB. Mutations in the histamine N-methyltransferase gene, HNMT, are associated with nonsyndromic autosomal recessive intellectual disability. Hum Mol Genet 2015. [PMID: 26206890 DOI: 10.1093/hmg/ddv286] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Histamine (HA) acts as a neurotransmitter in the brain, which participates in the regulation of many biological processes including inflammation, gastric acid secretion and neuromodulation. The enzyme histamine N-methyltransferase (HNMT) inactivates HA by transferring a methyl group from S-adenosyl-l-methionine to HA, and is the only well-known pathway for termination of neurotransmission actions of HA in mammalian central nervous system. We performed autozygosity mapping followed by targeted exome sequencing and identified two homozygous HNMT alterations, p.Gly60Asp and p.Leu208Pro, in patients affected with nonsyndromic autosomal recessive intellectual disability from two unrelated consanguineous families of Turkish and Kurdish ancestry, respectively. We verified the complete absence of a functional HNMT in patients using in vitro toxicology assay. Using mutant and wild-type DNA constructs as well as in silico protein modeling, we confirmed that p.Gly60Asp disrupts the enzymatic activity of the protein, and that p.Leu208Pro results in reduced protein stability, resulting in decreased HA inactivation. Our results highlight the importance of inclusion of HNMT for genetic testing of individuals presenting with intellectual disability.
Collapse
Affiliation(s)
- Abolfazl Heidari
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8, Cellular and Molecular Research Center
| | - Chanakan Tongsook
- Institute of Biochemistry, Graz University of Technology, Graz 8010, Austria
| | | | - Luciana Musante
- Max Planck Institute of Molecular Genetics, Berlin D-14195, Germany
| | - Nasim Vasli
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8
| | - Masoud Garshasbi
- Max Planck Institute of Molecular Genetics, Berlin D-14195, Germany, Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14117-13116, Iran
| | - Hao Hu
- Max Planck Institute of Molecular Genetics, Berlin D-14195, Germany
| | - Kirti Mittal
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8
| | | | - Kumudesh Sritharan
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8
| | | | - Henning Stehr
- Department of Medicine, Stanford University, Stanford, CA 94305-5101, USA
| | - Saeid Talebi
- Department of Medical Genetics, Medical University of Tehran, Tehran 14167-53955, Iran
| | | | - Hossein Darvish
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran 4739, Iran
| | - Muhammad Arshad Rafiq
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8
| | - Hossein Mozhdehipanah
- Department of Neurology, Bou Ali Sina Hospital, Qazvin University of Medical Sciences, Qazvin 34197/59811, Iran
| | - Ali Rashidinejad
- Maternal, Fetal and Neonatal Research Center, Tehran University of Medical Sciences, Tehran 1419733141, Iran
| | - Shahram Samiei
- Blood Transfusion Research Center, Tehran 1449613111, Iran
| | - Mohsen Ghadami
- Department of Medical Genetics, Tehran University of Medical Sciences, Tehran 1417613151, Iran
| | | | | | - Andreas Tzschach
- Max Planck Institute of Molecular Genetics, Berlin D-14195, Germany
| | - Iltaf Ahmed
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8, Atta-ur-Rehman School of Applied Biosciences, National University of Sciences and Technology, H-12, Islamabad, Pakistan
| | - Anna Mikhailov
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8
| | - D James Stavropoulos
- Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Melissa T Carter
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | | | - Muhammad Ayub
- Division of Developmental Disabilities, Department of Psychiatry, Queen's University, Kingston, ON, Canada K7L7X3
| | - Hossein Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran 19857, Iran, Kariminejad-Najmabadi Pathology and Genetics Center, Tehran 14667, Iran
| | | | | | - Peter Macheroux
- Institute of Biochemistry, Graz University of Technology, Graz 8010, Austria
| | - John B Vincent
- Molecular Neuropsychiatry and Development (MiND) Lab, The Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada M5T 1R8, Department of Psychiatry, University of Toronto, Toronto, ON, Canada M5T 1R8 and Institute of Medical Science, University of Toronto, Toronto, ON, Canada M5S 1A8
| |
Collapse
|
25
|
Abstract
BACKGROUND Complementary and alternative medicine (CAM) in psychiatry or integrative psychiatry covers a wide range of biological, psychological and mind-body treatments that enhance standard medical practices and patient outcomes. While CAM approaches are popular amongst patients in their practice as well as in self-report because of their ease of use, health professionals have received limited education in these interventions and often are unaware of their patients' use of CAM treatments. METHOD This overview highlights evidence-based CAM treatments for attention deficit hyperactivity disorder (ADHD) including dietary interventions, phytomedicines, mind-body practices and neurofeedback. RESULTS While conventional treatments are the mainstays for ADHD, there are a large number of available treatments that can be used to enhance treatment response. CONCLUSION With improved education and further scientific and clinical research, validated integrative treatments will provide more effective, lower risk and lower cost care for patients with ADHD.
Collapse
Affiliation(s)
- Anup Sharma
- University of Pennsylvania School of Medicine, USA
| | | | | |
Collapse
|
26
|
Raje N, Vyhlidal CA, Dai H, Jones BL. Genetic variation within the histamine pathway among patients with asthma--a pilot study. J Asthma 2014; 52:353-62. [PMID: 25295384 DOI: 10.3109/02770903.2014.973501] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Histamine is an important mediator in the pathophysiology of asthma. We have previously reported that HRH1 is differentially expressed among those with asthma compared to those without asthma. Single histamine-related genes have also been associated with asthma. We aimed to evaluate known single nucleotide polymorphisms (SNPs) in genes along the histamine biotransformation and response pathway, and determine their association with asthma and HRH1 mRNA expression. METHODS We enrolled children and adults (n = 93) with/without asthma who met inclusion/exclusion criteria. Genotyping was performed for nine known SNPs in the HDC, HRH1, HRH4, HNMT and ABP1 genes. HRH1 mRNA expression was determined on RNA from buccal tissue. General linear model, Fisher's exact test and Chi-square test were used to determine differences in allele, genotype and haplotype frequency between subjects with and without asthma and differential HRH1 mRNA expression relative to genotype. Statistical significance was determined by p < 0.05. RESULTS No difference was observed in genotype/allele frequency for the nine SNPs between subjects with and without asthma. The HNMT-1639C/-464C/314C/3'UTRA haplotype was more frequently observed in those without asthma than those with asthma (p = 0.03). We also observed genetic differences relative to race and gender. HNMT 314 genotype CT was more frequent in males with asthma compared to those without asthma (p = 0.04). CONCLUSIONS Histamine pathway haplotype was associated with a diagnosis of asthma in our cohort but allele and genotype were not. Subgroup evaluations may also be important. Further studies are needed to determine the potential biological/clinical significance of our findings.
Collapse
|
27
|
Influence of iodinated contrast media on the activities of histamine inactivating enzymes diamine oxidase and histamine N-methyltransferase in vitro. Allergol Immunopathol (Madr) 2014; 42:324-8. [PMID: 23578781 DOI: 10.1016/j.aller.2013.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 01/16/2013] [Accepted: 01/19/2013] [Indexed: 11/23/2022]
Abstract
BACKGROUND Iodinated contrast media can cause pseudoallergic reactions associated with histamine release in significant numbers of patients. To clarify whether these adverse reactions may be aggravated by a compromised histamine catabolism we asked if radiographic contrast agents in vitro inhibit the histamine inactivating enzymes diamine oxidase (DAO) and histamine N-methyltransferase (HMT). METHODS Nine iodinated contrast agents were tested in vitro. Following pre-incubation of purified porcine kidney DAO and recombinant human HMT with 0.1-10mM of the respective contrast medium (H2O and specific inhibitors of DAO and HMT as controls) enzyme activities were determined by using radiometric micro assays. RESULTS None of the contrast media irrespective of their structure showed significant inhibition of the activities of DAO and HMT. Pre-incubation of the enzymes with specific inhibitors led to complete inhibition of the respective enzymatic activity. CONCLUSIONS The iodinated contrast media tested in vitro did not exhibit inhibition of histamine converting enzymes at physiologically relevant concentrations. However due to the in vitro character of this study these results do not directly reflect the in vivo situation.
Collapse
|
28
|
Kellermayer B, Polgar N, Pal J, Banati M, Maasz A, Kisfali P, Hosszu Z, Juhasz A, Jensen HB, Tordai A, Rozsa C, Melegh B, Illes Z. Association of myasthenia gravis with polymorphisms in the gene of histamine N-methyltransferase. Hum Immunol 2013; 74:1701-4. [PMID: 23932992 DOI: 10.1016/j.humimm.2013.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 06/17/2013] [Accepted: 07/19/2013] [Indexed: 01/27/2023]
Abstract
INTRODUCTION Histamine N-methyltransferase (HNMT) is the main metabolizing enzyme of histamine. Histamine modulates immune responses and plays a role in the pathogenesis of autoimmune disorders. METHODS The non-synonymous HNMT C314T polymorphism and the A939G single-nucleotide polymorphism (SNP) influencing HNMT mRNA stability were genotyped in 213 patients with myasthenia gravis (MG) and 342 healthy controls. RESULTS The carrier frequency of the A allele of the A939G SNP was over-represented among patients with anti-AchR and anti-Titin antibodies (P = 0.05 and P = 0.004, respectively); the presence of the minor G allele was protective against anti-AchR and anti-Titin positive MG (OR = 0.67 and OR = 0.54, respectively). The combination of the G allele carrier status with wild-type C314C homozygosity was also protective against MG (OR = 0.55, P = 0.008) and against the development of anti-AchR antibodies (OR = 0.37, P = 0.01). DISCUSSION The A939G HNMT polymorphism is associated with autoimmune MG, while no association with C314T SNP was found.
Collapse
Affiliation(s)
- Blanka Kellermayer
- Division of Clinical and Experimental Neuroimmunology, Department of Neurology, University of Pecs, Pecs, Hungary
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Jones BL, Kearns G, Neville KA, Sherwin CMT, Spigarelli MMG, Leeder JS. Variability of histamine pharmacodynamic response in children with allergic rhinitis. J Clin Pharmacol 2013; 53:731-7. [PMID: 23681823 DOI: 10.1002/jcph.93] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/09/2013] [Indexed: 11/05/2022]
Abstract
Histamine iontophoresis with laser Doppler monitoring (HILD) is a robust and dynamic surrogate for histamine microvasculature response. We characterized histamine pharmacodynamics in children using HILD. HILD was performed in 54 children with allergic rhinitis. A non-compartmental analysis and non-linear mixed-effects model with a linked effect PK/PD model was used to provide estimates for area under the effect curve (AUEC), maximal response over baseline (EffmaxNT), and time of EffmaxNT (Tmax). Data were placed in sub-groups by visualization of time vs. response relationships. ANOVA and regression analyses were used for sub-group comparisons. Three histamine response phenotypes were identified. One group demonstrated a hyper-responsive phenotype (higher Tmax, EffmaxNt and AUEC, P < .01). AUEC and EffmaxNT were more strongly associated in this group (r(2) = 0.86) than the entire cohort (r(2) = 0.64). These data demonstrate a hyper-responsive histamine phenotype via HILD. This finding is important to future pharmacologic studies of antihistamines.
Collapse
Affiliation(s)
- Bridgette L Jones
- Department of Paediatrics, University of Missouri, Kansas City, MO 64108, USA.
| | | | | | | | | | | |
Collapse
|
30
|
Agúndez JAG, Ayuso P, Cornejo-García JA, Blanca M, Torres MJ, Doña I, Salas M, Blanca-López N, Canto G, Rondon C, Campo P, Laguna JJ, Fernández J, Martínez C, García-Martín E. The diamine oxidase gene is associated with hypersensitivity response to non-steroidal anti-inflammatory drugs. PLoS One 2012; 7:e47571. [PMID: 23152756 PMCID: PMC3495953 DOI: 10.1371/journal.pone.0047571] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 09/18/2012] [Indexed: 01/28/2023] Open
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are the drugs most frequently involved in hypersensitivity drug reactions. Histamine is released in the allergic response to NSAIDs and is responsible for some of the clinical symptoms. The aim of this study is to analyze clinical association of functional polymorphisms in the genes coding for enzymes involved in histamine homeostasis with hypersensitivity response to NSAIDs. We studied a cohort of 442 unrelated Caucasian patients with hypersensitivity to NSAIDs. Patients who experienced three or more episodes with two or more different NSAIDs were included. If this requirement was not met diagnosis was established by challenge. A total of 414 healthy unrelated controls ethnically matched with patients and from the same geographic area were recruited. Analyses of the SNPs rs17740607, rs2073440, rs1801105, rs2052129, rs10156191, rs1049742 and rs1049793 in the HDC, HNMT and DAO genes were carried out by means of TaqMan assays. The detrimental DAO 16 Met allele (rs10156191), which causes decreased metabolic capacity, is overrepresented among patients with crossed-hypersensitivity to NSAIDs with an OR = 1.7 (95% CI = 1.3–2.1; Pc = 0.0003) with a gene-dose effect (P = 0.0001). The association was replicated in two populations from different geographic areas (Pc = 0.008 and Pc = 0.004, respectively).
Collapse
Affiliation(s)
- José A. G. Agúndez
- Departamento de Farmacología, Universidad de Extremadura, Cáceres, Spain
| | - Pedro Ayuso
- Departamento de Bioquímica y Biología Molecular y Genética, Universidad de Extremadura, Cáceres, Spain
| | | | - Miguel Blanca
- Servicio de Alergologia, Hospital Carlos Haya, Málaga, Spain
| | - María J. Torres
- Servicio de Alergologia, Hospital Carlos Haya, Málaga, Spain
| | - Inmaculada Doña
- Servicio de Alergologia, Hospital Carlos Haya, Málaga, Spain
| | - María Salas
- Servicio de Alergologia, Hospital Carlos Haya, Málaga, Spain
| | | | - Gabriela Canto
- Servicio de Alergologia, Hospital Infanta Leonor, Madrid, Spain
| | - Carmen Rondon
- Servicio de Alergologia, Hospital Carlos Haya, Málaga, Spain
| | - Paloma Campo
- Servicio de Alergologia, Hospital Carlos Haya, Málaga, Spain
| | - José J. Laguna
- Servicio de Alergologia, Hospital Cruz Roja, Madrid, Spain
| | | | - Carmen Martínez
- Departamento de Farmacología, Universidad de Extremadura, Cáceres, Spain
| | - Elena García-Martín
- Departamento de Bioquímica y Biología Molecular y Genética, Universidad de Extremadura, Cáceres, Spain
- * E-mail:
| |
Collapse
|
31
|
Lee HS, Kim SH, Kim KW, Baek JY, Park HS, Lee KE, Hong JY, Kim MN, Heo WI, Sohn MH, Kim KE. Involvement of human histamine N-methyltransferase gene polymorphisms in susceptibility to atopic dermatitis in korean children. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2011; 4:31-6. [PMID: 22211168 PMCID: PMC3242058 DOI: 10.4168/aair.2012.4.1.31] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 09/15/2011] [Indexed: 11/20/2022]
Abstract
Purpose Histamine N-methyltransferase (HNMT) catalyzes one of two major histamine metabolic pathways. Histamine is a mediator of pruritus in atopic dermatitis (AD). The aim of this study was to evaluate the association between HNMT polymorphisms and AD in children. Methods We genotyped 763 Korean children for allelic determinants at four polymorphic sites in the HNMT gene: -465T>C, -413C>T, 314C>T, and 939A>G. Genotyping was performed using a TaqMan fluorogenic 5' nuclease assay. The functional effect of the 939A>G polymorphism was analyzed. Results Of the 763 children, 520 had eczema and 542 had atopy. Distributions of the genotype and allele frequencies of the HNMT 314C>T polymorphism were significantly associated with non-atopic eczema (P=0.004), and those of HNMT 939A>G were significantly associated with eczema in the atopy groups (P=0.048). Frequency distributions of HNMT -465T>C and -413C>T were not associated with eczema. Subjects who were AA homozygous or AG heterozygous for 939A>G showed significantly higher immunoglobulin E levels than subjects who were GG homozygous (P=0.009). In U937 cells, the variant genotype reporter construct had significantly higher mRNA stability (P<0.001) and HNMT enzyme activity (P<0.001) than the common genotype. Conclusions Polymorphisms in HNMT appear to confer susceptibility to AD in Korean children.
Collapse
Affiliation(s)
- Hee Seon Lee
- Department of Pediatrics and Institute of Allergy, Severance Biomedical Science Institute, BK21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Palada V, Terzić J, Mazzulli J, Bwala G, Hagenah J, Peterlin B, Hung AY, Klein C, Krainc D. Histamine N-methyltransferase Thr105Ile polymorphism is associated with Parkinson's disease. Neurobiol Aging 2011; 33:836.e1-3. [PMID: 21794955 DOI: 10.1016/j.neurobiolaging.2011.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2011] [Revised: 06/10/2011] [Accepted: 06/17/2011] [Indexed: 10/17/2022]
Abstract
Histamine is a central neurotransmitter degraded by histamine-N-methyltransferase (HNMT). Several abnormalities in the histaminergic system were found in patients with Parkinson's disease (PD), thus we tested the possible association of a Thr105Ile functional polymorphism in HNMT with PD. A total of 913 patients with PD and 958 controls were genotyped using a TaqMan RT-PCR Genotyping Assay (Foster City, California, USA). Lower frequency of HNMT Ile105 allele that is associated with decreased enzymatic activity was found in patients compared with controls (χ(2) = 11.65; p = 0.0006). We performed meta-analysis to confirm the association of Thr105Ile functional polymorphism with PD. Our results indicate that lower HNMT activity plays a role in the pathogenesis of PD.
Collapse
Affiliation(s)
- Vinko Palada
- Mediterranean Institute for Life Science, Split, Croatia
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Jones BL, Kearns GL. Histamine: New Thoughts About a Familiar Mediator. Clin Pharmacol Ther 2010; 89:189-97. [DOI: 10.1038/clpt.2010.256] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
34
|
Marasović-Šušnjara I, Palada V, Marinović-Terzić I, Mimica N, Marin J, Muck-Seler D, Mustapić M, Presečki P, Pivac N, Folnegović-Šmalc V, Marinović-Ćurin J, Terzić J. No association between histamine N-methyltransferase functional polymorphism Thr105Ile and Alzheimer's disease. Neurosci Lett 2010; 489:119-21. [PMID: 21138759 DOI: 10.1016/j.neulet.2010.11.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Revised: 11/23/2010] [Accepted: 11/30/2010] [Indexed: 10/18/2022]
Abstract
Several abnormalities, including lower histamine levels in brain, elevated serum histamine and degeneration of histaminergic neurons in tuberomammillary nucleus, were described in the histaminergic system of patients with Alzheimer's disease (AD). Histamine is a central neurotransmitter with several functions in brain including regulation of memory, cognition, locomotion, and is degraded in part by histamine N-methyltransferase (HNMT). A common Thr105Ile polymorphism within HNMT gene results in decreased enzyme activity. The Thr105Ile polymorphism was associated with Parkinson's disease, essential tremor, attention-deficit hyperactivity disorder (ADHD), asthma and alcoholism, thus we tested possible association of HNMT functional polymorphism with AD. We have tested 256 AD cases and 1190 healthy controls of Croatian origin. Thr105Ile polymorphism was determined by TaqMan RT-PCR Genotyping Assay and EcoRV digestion. Prevalence of functional HNMT polymorphism among all tested groups was similar and frequency of less active Ile105 variant was 11.5% among AD patients and 13.4% for healthy controls (p=0.26, X(2)=1.25). Our results indicate lack of the association of HNMT Thr105Ile functional polymorphism with Alzheimer's disease.
Collapse
|
35
|
Szczepankiewicz A, Bręborowicz A, Sobkowiak P, Popiel A. Polymorphisms of two histamine-metabolizing enzymes genes and childhood allergic asthma: a case control study. Clin Mol Allergy 2010; 8:14. [PMID: 21040557 PMCID: PMC2990726 DOI: 10.1186/1476-7961-8-14] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Accepted: 11/01/2010] [Indexed: 12/02/2022] Open
Abstract
Background Histamine-metabolizing enzymes (N-methyltransferase and amiloride binding protein 1) are responsible for histamine degradation, a biogenic amine involved in allergic inflammation. Genetic variants of HNMT and ABP1 genes were found to be associated with altered enzyme activity. We hypothesized that alleles leading to decreased enzyme activity and, therefore, decreased inactivation of histamine may be responsible for altered susceptibility to asthma. Methods The aim of this study was to analyze polymorphisms within the HNMT and ABP1 genes in the group of 149 asthmatic children and in the group of 156 healthy children. The genetic analysis involved four polymorphisms of the HNMT gene: rs2071048 (-1637T/C), rs11569723 (-411C/T), rs1801105 (Thr105Ile = 314C/T) and rs1050891 (1097A/T) and rs1049793 (His645Asp) polymorphism for ABP1 gene. Genotyping was performed with use of PCR-RFLP. Statistical analysis was performed using Statistica software; linkage disequilibrium analysis was done with use of Haploview software. Results We found an association of TT genotype and T allele of Thr105Ile polymorphism of HNMT gene with asthma. For other polymorphisms for HNMT and ABP1 genes, we have not observed relationship with asthma although the statistical power for some SNPs might not have been sufficient to detect an association. In linkage disequilibrium analysis, moderate linkage was found between -1637C/T and -411C/T polymorphisms of HNMT gene. However, no significant differences in haplotype frequencies were found between the group of the patients and the control group. Conclusions Our results indicate modifying influence of histamine N-methyltransferase functional polymorphism on the risk of asthma. The other HNMT polymorphisms and ABP1 functional polymorphism seem unlikely to affect the risk of asthma.
Collapse
Affiliation(s)
- Aleksandra Szczepankiewicz
- Laboratory of Molecular and Cell Biology, Department of Pediatric Pulmonology, Allergy and Clinical Immunology, Poznan University of Medical Sciences, Poland.
| | | | | | | |
Collapse
|
36
|
Rutherford K, Daggett V. Polymorphisms and disease: hotspots of inactivation in methyltransferases. Trends Biochem Sci 2010; 35:531-8. [PMID: 20382027 DOI: 10.1016/j.tibs.2010.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Revised: 03/10/2010] [Accepted: 03/10/2010] [Indexed: 01/13/2023]
Abstract
Methyltransferases catalyze the methylation processes essential for protein/DNA repair, transcriptional regulation, and drug metabolism in vivo. More than 500 human methyltransferase polymorphisms have been identified, many of which are linked to disease. We mapped all available coding polymorphisms of seven methyltransferases onto their structures to address their structural significance, and identified a polymorphic hotspot ∼20Å from the active site in four of the proteins. Molecular dynamics simulations of these proteins reveal a common mechanism of destabilization: the mutations alter important side-chain contacts within the polymorphic site that are propagated through the protein, thereby distorting the active site. We propose that this hotspot might have arisen to modulate enzymatic activity, with decreased activity actually conferring an advantage in three of the four methyltransferases.
Collapse
Affiliation(s)
- Karen Rutherford
- Department of Biochemistry, Box 355013, University of Washington, Seattle WA 98195-5013, USA
| | | |
Collapse
|
37
|
Feng Q, Vannaprasaht S, Peng Y, Angsuthum S, Avihingsanon Y, Yee VC, Tassaneeyakul W, Weinshilboum RM. Thiopurine S-methyltransferase pharmacogenetics: functional characterization of a novel rapidly degraded variant allozyme. Biochem Pharmacol 2009; 79:1053-61. [PMID: 19945438 DOI: 10.1016/j.bcp.2009.11.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Revised: 11/13/2009] [Accepted: 11/20/2009] [Indexed: 11/25/2022]
Abstract
A novel human thiopurine S-methyltransferase (TPMT) variant allele, (319 T>G, 107Tyr>Asp, *27), was identified in a Thai renal transplantation recipient with reduced erythrocyte TPMT activity. The TPMT*27 variant allozyme showed a striking decrease in both immunoreactive protein level and enzyme activity after transient expression in a mammalian cell line. We set out to explore the mechanism(s) responsible for decreased expression of this novel variant of an important drug-metabolizing enzyme. We observed accelerated degradation of TPMT*27 protein in a rabbit reticulocyte lysate. TPMT*27 degradation was slowed by proteasome inhibition and involved chaperone proteins-similar to observations with regard to the degradation of the common TPMT*3A variant allozyme. TPMT*27 aggresome formation was also observed in transfected mammalian cells after proteasome inhibition. Inhibition of autophagy also decreased TPMT*27 degradation. Finally, structural analysis and molecular dynamics simulation indicated that TPMT*27 was less stable than was the wild type TPMT allozyme. In summary, TPMT*27 serves to illustrate the potential importance of protein degradation - both proteasome and autophagy-mediated degradation - for the pharmacogenetic effects of nonsynonymous SNPs.
Collapse
Affiliation(s)
- Qiping Feng
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic-Mayo Medical School, 200 First Street SW, Rochester, MN 55905, United States
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Keeling BH, Vilariño-Güell C, Soto-Ortolaza AI, Ross OA, Uitti RJ, Rajput A, Wszolek ZK, Farrer MJ. Histamine N-methyltransferase Thr105Ile is not associated with Parkinson's disease or essential tremor. Parkinsonism Relat Disord 2009; 16:112-4. [PMID: 19773194 DOI: 10.1016/j.parkreldis.2009.08.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Revised: 08/21/2009] [Accepted: 08/28/2009] [Indexed: 11/26/2022]
Abstract
A functional variant in the Histamine N-Methyltransferase gene (HNMT - rs11558538) resulting in a threonine to isoleucine substitution (Thr105Ile) has been shown to impair histamine degradation. Two recent studies reported that the threonine allele of this polymorphism might be a risk factor for Parkinson disease (PD) and essential tremor (ET) development. Although PD and ET are considered different entities, they share some clinical and pathological features, suggesting a possible joint etiology. In this study we assess the role of the Thr105Ile variant in PD and ET development, genotyping the variant in a North American Caucasian PD and ET case-control series. Statistical analysis did not identify any significant association between this variant and PD or ET; therefore, our findings do not support the HNMT Thr105Ile variant as a factor in disease development or a genetic link between the disorders.
Collapse
Affiliation(s)
- Brett H Keeling
- Department of Neuroscience, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
| | | | | | | | | | | | | | | |
Collapse
|
39
|
García-Martín E, Martínez C, Benito-León J, Calleja P, Díaz-Sánchez M, Pisa D, Alonso-Navarro H, Ayuso-Peralta L, Torrecilla D, Agúndez JAG, Jiménez-Jiménez FJ. Histamine-N-methyl transferase polymorphism and risk for multiple sclerosis. Eur J Neurol 2009; 17:335-8. [PMID: 19538200 DOI: 10.1111/j.1468-1331.2009.02720.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Histamine N-methyltransferase (HNMT) is the main metabolizing enzyme of histamine (a mediator of inflammation implicated in the pathogenesis of multiple sclerosis-MS) in the CNS. We have investigated the possible association between a single nucleotide polymorphism of the HNMT (chromosome 2q22.1), that causes the amino acid substitution Thr105Ile (decreasing enzyme activity) and the risk for MS. METHODS We studied the frequency of the HNMT genotypes and allelic variants in 228 MS patients and 295 healthy controls using a PCR-RLFP method. RESULTS The frequencies of the HNMT genotypes and allelic variants did not differ significantly between MS patients and controls, and were unrelated with the age of onset of MS, gender, and course of MS. CONCLUSION The HNMT polymorphism is not related with the risk for MS.
Collapse
Affiliation(s)
- E García-Martín
- Biochemistry-Molecular Biology Department, University of Extremadura, Badajoz, Spain
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
García-Martín E, Ayuso P, Martínez C, Blanca M, Agúndez JAG. Histamine pharmacogenomics. Pharmacogenomics 2009; 10:867-83. [DOI: 10.2217/pgs.09.26] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Genetic polymorphisms for histamine-metabolizing enzymes are responsible for interindividual variation in histamine metabolism and are associated with diverse diseases. Initial reports on polymorphisms of histamine-related genes including those coding for the enzymes histidine decarboxylase (HDC), diamine oxidase (ABP1) and histamine N-methyltransferase (HNMT), as well as histamine receptor genes, often have pointed to polymorphisms that occur with extremely low frequencies or that could not be verified by later studies. In contrast, common and functionally significant polymorphisms recently described have been omitted in many association studies. In this review we analyze allele frequencies, functional and clinical impact and interethnic variability on histamine-related polymorphisms. The most relevant nonsynonymous polymorphisms for the HDC gene are rs17740607 Met31Thr, rs16963486 Leu553Phe and rs2073440 Asp644Glu. For ABP1 the most relevant polymorphisms are rs10156191 Thr16Met, rs1049742 Ser332Phe, and particularly because of its functional effect, rs1049793 His645Asp. In addition the ABP1 polymorphisms rs45558339 Ile479Met and rs35070995 His659Asn are relevant to Asian and African subjects, respectively. For HNMT the only nonsynonymous polymorphism present with a relevant frequency is rs1801105 Thr105Ile. For HRH1 the polymorphism rs7651620 Glu270Gly is relevant to African subjects only. The HRH2 rs2067474 polymorphism, located in an enhancer element of the gene promoter, is common in all populations. No common nonsynonymous SNPs were observed in the HRH3 gene and two SNPs were observed with a significant frequency in the HRH4 gene: rs11665084 Ala138Val and rs11662595 His206Arg. This review summarizes relevant polymorphisms, discusses controversial findings on association of histamine-related polymorphisms and allergies and other diseases, and identifies topics requiring further investigation.
Collapse
Affiliation(s)
| | - Pedro Ayuso
- University of Extremadura, Avda. de Elvas s/n, 06071, Badajoz, Spain
| | - Carmen Martínez
- University of Extremadura, Avda. de Elvas s/n, 06071, Badajoz, Spain
| | - Miguel Blanca
- Allergy Service, Carlos Haya Hospital, Málaga, Spain
| | - José AG Agúndez
- University of Extremadura, Avda. de Elvas s/n, 06071, Badajoz, Spain
| |
Collapse
|
41
|
Kuefner MA, Feurle J, Uder M, Bautz W, Schwelberger HG. Influence of magnetic resonance contrast media on the activity of histamine inactivating enzymes. Acad Radiol 2009; 16:358-62. [PMID: 19201365 DOI: 10.1016/j.acra.2008.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2008] [Revised: 08/27/2008] [Accepted: 08/27/2008] [Indexed: 10/21/2022]
Abstract
RATIONALE AND OBJECTIVES The observation that the intravenous application of gadolinium-based contrast media can lead to nephrogenic systemic fibrosis (NSF) has raised interest in their interactions with pathways. In this context, histamine is a focus because of its stimulating effect on fibrogenesis. In humans, histamine can be inactivated either by diamine oxidase (DAO) or by histamine N-methyltransferase (HMT), and numerous drugs are known to inhibit these enzymes. Therefore, it was the aim of this study to investigate whether magnetic resonance imaging contrast agents have an inhibitory effect on the enzymatic activities of DAO and HMT. MATERIALS AND METHODS Seven gadolinium-based (gadoterate meglumine, gadoteridol, gadobutrol, gadobenate dimeglumine, gadopentetate dimeglumine, gadoxetate disodium, gadodiamide) and one manganese-containing (mangafodipir) contrast agents were tested in vitro. Following the preincubation of purified DAO and HMT with 0.1 to 10 mmol/L of the respective contrast medium, enzyme activities were determined using radiometric microassays. Enzyme activities measured in the absence of contrast agents and after preincubation with specific inhibitors of DAO and HMT, respectively, served as controls. RESULTS The gadolinium-containing and manganese-containing contrast media tested did not show significant inhibition of the activities of DAO and HMT. No significant difference was observed between ionic and nonionic or between cyclic and linear gadolinium compounds. Preincubation of the enzymes with specific inhibitors led to complete inhibition of the respective enzymatic activity. CONCLUSION The gadolinium-containing and manganese-based magnetic resonance imaging contrast media tested did not exhibit significant inhibition of histamine-inactivating enzymes at physiologically relevant concentrations.
Collapse
|
42
|
Kennedy MJ, Loehle JA, Griffin AR, Doll MA, Kearns GL, Sullivan JE, Hein DW. Association of the histamine N-methyltransferase C314T (Thr105Ile) polymorphism with atopic dermatitis in Caucasian children. Pharmacotherapy 2009; 28:1495-501. [PMID: 19025430 DOI: 10.1592/phco.28.12.1495] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
STUDY OBJECTIVE To investigate potential associations between the histamine N-methyltransferase (HNMT) gene, HNMT, C314T (Thr105Ile) polymorphism and atopic dermatitis in a cohort of Caucasian children. DESIGN Prospective, multicenter, genotype-association study. SETTING Four academic, tertiary care medical centers within the Pediatric Pharmacology Research Unit network. PARTICIPANTS Two hundred forty-nine Caucasian children aged 6 months-5 years with atopic dermatitis (127 patients) or without (122 control subjects). INTERVENTION Buccal swabs (one swab/cheek) were performed to obtain epithelial cells for extraction of genomic DNA. MEASUREMENTS AND MAIN RESULTS Data were collected on severity of atopic dermatitis, oral antihistamine treatment, and treatment response through parental report. The HNMT genotypes were successfully obtained in 116 control subjects and 122 patients with atopic dermatitis. Frequencies of the T314 variant allele (0.12 vs 0.06, p=0.04) and combined CT/TT genotype (0.24 vs 0.12, p=0.02) were significantly higher in children with atopic dermatitis compared with control subjects. Children with genotypes conferring reduced HNMT activity were 2 times more likely to have atopic dermatitis than those who were homozygous for the C314 reference allele. CONCLUSION Increased histamine levels in patients with atopic dermatitis may result, at least in part, from reduced enzymatic inactivation via HNMT. Genetically associated reduction in histamine biotransformation may therefore contribute to the pathogenesis, persistence, and progression of atopic dermatitis. If confirmed, these data indicate that HNMT genotype might represent a common risk factor for development of atopic dermatitis, asthma, and allergic rhinitis and may be useful in identifying individuals who are candidates for early preventive pharmacotherapeutic intervention. Additional longitudinal studies will be required to assess the relationship between genotype, disease severity, and antihistamine response.
Collapse
Affiliation(s)
- Mary Jayne Kennedy
- Kosair Charities Pediatric Clinical Research Unit, Department of Pediatrics, School of Medicine, University of Louisville, Louisville, KY 40202, USA.
| | | | | | | | | | | | | |
Collapse
|
43
|
Kim SH, Kang YM, Kim SH, Cho BY, Ye YM, Hur GY, Park HS. Histamine N-methyltransferase 939A>G polymorphism affects mRNA stability in patients with acetylsalicylic acid-intolerant chronic urticaria. Allergy 2009; 64:213-21. [PMID: 19178400 DOI: 10.1111/j.1398-9995.2008.01795.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Histamine plays an important role in allergic inflammation. Histamine levels are regulated by histamine N-methyltransferase (HNMT). OBJECTIVE To investigate the functional variability of HNMT gene in relation to genetic polymorphisms in patients with aspirin intolerant chronic urticaria (AICU). METHODS Two single-nucleotide polymorphisms of the HNMT gene (314C>T, 939A>G) were genotyped in chronic urticaria patients. The functional variability of 3'-untranslated region polymorphism (3'-UTR) was assessed using the pEGFP-HNMT 3'-UTR reporter construct to examine mRNA stability and fluorescence-tagged protein expression. The HNMT enzymatic activities related to the 939A>G polymorphism were examined both in the human mast cells (HMC-1) transfected with the pHNMT CDS-3'-UTR construct and in the patients' red blood cells (RBCs). Histamine release from the basophils of AICU patients was examined. RESULTS The 939A>G polymorphism was significantly associated with the AICU phenotype, while no association was found with the 314C>T polymorphism. An in vitro functional study using HMC-1 cells demonstrated that the 939A allele gave lower levels of HNMT mRNA stability, HNMT protein expression, and HNMT enzymatic activity and higher histamine release than the 939G allele. The in vivo functional study demonstrated that the AICU patients with the 939A allele had lower HNMT activity in RBC lysates and higher histamine release from their basophils. CONCLUSION The HNMT 939A>G polymorphism lowers HNMT enzymatic activity by decreasing HNMT mRNA stability, which leads to an increase in the histamine level and contributes to the development of AICU.
Collapse
Affiliation(s)
- S-H Kim
- Department of Allergy & Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | | | | | | | | | | | | |
Collapse
|
44
|
García-Martín E, Martínez C, Serrador M, Alonso-Navarro H, Navacerrada F, Agúndez JA, Jiménez-Jiménez FJ. Histamine-N-Methyl Transferase Polymorphism and Risk for Migraine. Headache 2008; 48:1343-8. [DOI: 10.1111/j.1526-4610.2007.01056.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
45
|
The nonsynonymous Thr105Ile polymorphism of the histamine N-methyltransferase is associated to the risk of developing essential tremor. Neuromolecular Med 2008; 10:356-61. [PMID: 18543121 DOI: 10.1007/s12017-008-8040-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Accepted: 05/06/2008] [Indexed: 10/22/2022]
Abstract
OBJECTIVE We analyzed in patients with essential tremor (ET) the Thr105Ile polymorphism of the Histamine N-methyltransferase (HNMT) enzyme that is associated to Parkinson's disease (PD) risk. METHODS Leukocytary DNA from 204 ET patients and a control group of 295 unrelated healthy individuals was studied for the nonsynonymous HNMT Thr105Ile polymorphism by using amplification-restriction analyses. RESULTS Patients with ET showed a higher frequency of homozygous HNMT 105Thr genotypes leading to high metabolic activity (p < 0.015) with a statistically significant gene-dose effect, as compared to healthy subjects. These findings were independent of gender, and of tremor localization, but the association of the HNMT polymorphism is more prominent among patients with late-onset ET (p < 0.007). CONCLUSION These results, combined with previous findings indicating alterations in the frequency for the HNMT Thr105Ile polymorphism in patients with PD, suggest that alterations of histamine homeostasis in the SNC are associated with the risk of movement disorders.
Collapse
|
46
|
Meletiadis J, Chanock S, Walsh TJ. Defining targets for investigating the pharmacogenomics of adverse drug reactions to antifungal agents. Pharmacogenomics 2008; 9:561-84. [DOI: 10.2217/14622416.9.5.561] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Adverse drug reactions (ADRs) associated with antifungal therapy are major problems in patients with invasive fungal infections. Whether by clinical history or patterns of genetic variation, the identification of patients at risk for ADRs should result in improved outcomes while minimizing deleterious side effects. A major contributing factor to ADRs with antifungal agents relates to drug distribution, metabolism and excretion. Genetic variation in key genes can alter the structure and expression of genes and gene products (e.g., proteins). Thus far, the effort has focused on identifying polymorphisms with either empirical or predicted in silico functional consequences; the best candidate genes encode phase I and II drug-metabolizing enzymes (e.g., CYP2C19 and N-acetyltransferase), plasma proteins (albumin and lipoproteins) and drug transporters (P-glycoprotein and multidrug resistance proteins), which can affect the disposition of antifungal agents, eventually leading to dose-dependent (type A) toxicity. Less is known regarding the key genes that interact with antifungal agents, resulting in idiosyncratic (type B) ADRs. The possible role of certain gene products and genetic polymorphisms in the toxicities of antifungal agents are discussed in this review. The preliminary data address the following: low-density lipoproteins and cholesteryl ester transfer protein in amphotericin B renal toxicity; toll-like receptor 1 and 2 in amphotericin B infusion-related ADRs; phosphodiesterase 6 in voriconazole visual adverse events; flavin-containing monooxygenase, glutathione transferases and multidrug resistance proteins 1 and 2 in ketoconazole and terbinafine hepatotoxicity; CYP enzymes and P-glycoprotein in drug interactions between azoles and coadministered medications; multidrug resistance proteins 8 and 9 on 5-flucytosine bone marrow toxicity; and mast cell activation in caspofungin histamine release. This will focus on high-priority candidate genes, which could provide a starting point for molecular studies to elucidate the potential mechanisms for understanding toxicity associated with antifungal drugs as well as identifying candidate genes for large population prospective genetic association studies.
Collapse
Affiliation(s)
- Joseph Meletiadis
- National Cancer Institute, National Institutes of Health, Pediatric Oncology Branch, Bethesda, MD 20814, USA
- Attikon University General Hospital, Laboratoty for Clinical Microbiology, 1 Rimini Street, Athens 124 62, Greece
| | - Stephen Chanock
- National Cancer Institute, National Institutes of Health, Pediatric Oncology Branch, Bethesda, MD 20814, USA
| | - Thomas J Walsh
- National Cancer Institute, National Institutes of Health, Pediatric Oncology Branch, Bethesda, MD 20814, USA
| |
Collapse
|
47
|
Rutherford K, Parson WW, Daggett V. The histamine N-methyltransferase T105I polymorphism affects active site structure and dynamics. Biochemistry 2007; 47:893-901. [PMID: 18154359 DOI: 10.1021/bi701737f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Histamine N-methyltransferase (HNMT) is the primary enzyme responsible for inactivating histamine in the mammalian brain. The human HNMT gene contains a common threonine-isoleucine polymorphism at residue 105, distal from the active site. The 105I variant has decreased activity and lower protein levels than the 105T protein. Crystal structures of both variants have been determined but reveal little regarding how the T105I polymorphism affects activity. We performed molecular dynamics simulations for both 105T and 105I at 37 degrees C to explore the structural and dynamic consequences of the polymorphism. The simulations indicate that replacing Thr with the larger Ile residue leads to greater burial of residue 105 and heightened intramolecular interactions between residue 105 and residues within helix alpha3 and strand beta3. This altered, tighter packing is translated to the active site, resulting in the reorientation of several cosubstrate-binding residues. The simulations also show that the hydrophobic histamine-binding domain in both proteins undergoes a large-scale breathing motion that exposes key catalytic residues and lowers the hydrophobicity of the substrate-binding site.
Collapse
Affiliation(s)
- Karen Rutherford
- Department of Biochemistry, University of Washington, Box 355061, Seattle, Washington 98195-5061, USA
| | | | | |
Collapse
|
48
|
Hailong C, Cao H, Mei Q, Zhang L, Xu J. C314T polymorphism in histamine N-methyltransferase gene and susceptibility to duodenal ulcer in Chinese population. Clin Chim Acta 2007; 389:51-4. [PMID: 18086566 DOI: 10.1016/j.cca.2007.11.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2007] [Revised: 11/22/2007] [Accepted: 11/23/2007] [Indexed: 12/27/2022]
Abstract
BACKGROUND Histamine is a regulator of gastric acid secretion, which is involved in the development of duodenal ulcer (DU). Histamine is metabolized by both histamine N-methyltransferase (HNMT) and diamine oxidase, and its local action is terminated primarily by methylation which is catalyzed by HNMT. METHODS Polymerase chain reaction-restriction fragment length polymorphism assay was used to identify the polymorphism of the point mutation C314T of HNMT gene of 498 Chinese patients with DU and 151 healthy individuals. RESULTS In normal controls, the allele frequency of HNMT T314 was 3.3%, which was significantly lower than American Caucasians. The HNMT T314 allele was detected in 3.5% of the DU patients. In cases and controls, the frequency of C/C genotypes were 93.0% and 93.4%, respectively. The HNMT T/T genotype was not found in this population. No significant differences were seen in both genotype frequencies and allele frequencies between DU groups and controls. After stratified by H. pylori infection, they also could not reach significant differences in our current study. CONCLUSION The HNMT T314 allele frequency is lower in Chinese population than in American Caucasians. No association can be found in the involvement of HNMT C314T polymorphism in the susceptibility to duodenal ulcer.
Collapse
Affiliation(s)
- Cao Hailong
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | | | | | | | | |
Collapse
|
49
|
Nonsynonymous Polymorphisms of Histamine-Metabolising Enzymes in Patients with Parkinson’s Disease. Neuromolecular Med 2007; 10:10-6. [DOI: 10.1007/s12017-007-8017-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2007] [Indexed: 11/25/2022]
|
50
|
García-Martín E, García-Menaya J, Sánchez B, Martínez C, Rosendo R, Agúndez JAG. Polymorphisms of histamine-metabolizing enzymes and clinical manifestations of asthma and allergic rhinitis. Clin Exp Allergy 2007; 37:1175-82. [PMID: 17651147 DOI: 10.1111/j.1365-2222.2007.02769.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Polymorphisms of enzymes involved in histamine biodisposition may affect clinical symptoms in diseases related to histamine, such as asthma or allergic rhinitis (AR). OBJECTIVE This study aims to analyse two common polymorphisms in genes coding for histamine-metabolizing enzymes in patients with allergic diseases. METHODS Five-hundred and sixty-five individuals participated in the study, including 270 unrelated patients with asthma and/or AR recruited from a single centre and 295 healthy volunteers. Participants were analysed for the presence of Thr105Ile and His645Asp amino acid substitutions at histamine N-methyltransferase (HNMT) and diamine oxidase (amiloride binding protein 1) enzymes, respectively, by amplification-restriction procedures. RESULTS The variant HNMT allele frequencies were slightly higher among patients with asthma [16.0%, 95% confidence interval (CI) 12.0-20.0] and among patients with rhinitis (13.2, 95% CI 10.3-16.1) as compared with healthy subjects (11.5 95% CI 8.9-14.1). The variant ABP1 allele frequencies were similar among patients with asthma (30.8%, 95% CI 25.7-35.9), rhinitis (28.7, 95% CI 24.8-32.6) and healthy subjects (26.8 95% CI 23.2-30.3). Individuals carrying mutated ABP1 alleles presented allergy symptoms with significantly lower IgE levels as compared with individuals without mutated genes, with a significant gene-dose effect (P<0.001). In addition, the percentage of individuals presenting symptoms without eosinophilia was significantly higher among homozygous carriers of ABP1 variant alleles (P<0.020) as compared with the rest of the atopic patients. CONCLUSION There is a lack of association between the allelic variants studied and the risk of developing allergic asthma and rhinitis. However, patients carrying the His645Asp polymorphism of ABP1 are more prone to developing symptoms with lower IgE levels.
Collapse
Affiliation(s)
- E García-Martín
- Department of Biochemistry & Molecular Biology & Genetics, University of Extremadura, Badajoz, Spain
| | | | | | | | | | | |
Collapse
|