Record Information |
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Version | 2.0 |
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Created at | 2006-05-22 14:18:00 UTC |
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Updated at | 2021-06-29 00:47:36 UTC |
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NP-MRD ID | NP0000841 |
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Secondary Accession Numbers | None |
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Natural Product Identification |
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Common Name | 3-(3-Hydroxyphenyl)-3-hydroxypropanoic acid |
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Description | 3-(3-Hydroxyphenyl)-3-hydroxypropanoic acid (HPHPA) is an organic acid detected in human urine. It is relatively abundant in adult human urine and it is normally relatively benign. It is thought that the presence of this acid is from nutritional sources (i.E. Dietary phenylalanine or polyphenols). However, there has been a considerable degree of ambiguity in the origin and/or significance of this compound (PMID: 11978597 ). Recently, it has been reported that HPHPA is actually an abnormal phenylalanine metabolite arising from bacterial metabolism in the gastrointestinal tract. Specifically, HPHPA appears to arise from the action of the anaerobic bacteria Clostridia sp. (PMID: 20423563 ; PMID: 24063620 ). Elevated levels of HPHPA have been reported in the urine of children with autism as well as in adult patients with schizophrenia. It has been proposed that HPHPA may be a bacterial metabolite of m-tyrosine, a tyrosine analog that causes symptoms of autism in experimental animals. Under certain conditions, HPHPA can act as a neurotoxin and a metabotoxin. A neurotoxin causes damage to nerve cells and nerve tissues. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of HPHPA are associated with autism and schizophrenia. The mechanism by which HPHPA exerts its toxic effects is not clear. It may function as a catecholamine analog and disrupt catecholamine signalling, especially in younger individuals. Alternately, HPHPA may function as an amino acid analog to tyrosine and phenylalanine. High plasma concentrations of phenylalanine (and possibly HPHPA) are known to influence the blood-brain barrier transport of large neutral amino acids. This altered transport is believed to interfere with the function of different cerebral enzyme systems in the developing brain. Studies have shown that higher levels of HPHPA are associated with overgrowth of Clostridia in the gut, including Clostridium difficile, Clostridium sporogenes, Clostridium botulinum, Clostridium calortolerans, Clostridium mangenoyi, Clostridium ghoni, Clostridium bifermentans, Clostridium sordelli. (PMID: 20423563 ; PMID: 24063620 ) |
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Structure | OC(CC(O)=O)C1=CC(O)=CC=C1 InChI=1S/C9H10O4/c10-7-3-1-2-6(4-7)8(11)5-9(12)13/h1-4,8,10-11H,5H2,(H,12,13) |
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Synonyms | Value | Source |
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(3-Hydroxyphenyl)hydracrylic acid | ChEBI | 3'-Hydroxyphenylhydracrylic acid | ChEBI | 3-(3-Hydroxyphenyl)-3-hydroxypropionic acid | ChEBI | 3-(3-Hydroxyphenyl)hydracrylic acid | ChEBI | 3-(m-Hydroxyphenyl)hydracrylic acid | ChEBI | 3-Hydroxy-3-(3-hydroxyphenyl)propionic acid | ChEBI | 3-Hydroxyphenyl-hydracrylic acid | ChEBI | b-(m-Hydroxyphenyl)hydracrylic acid | ChEBI | beta-(m-Hydroxyphenyl)hydracrylic acid | ChEBI | HPHPA | ChEBI | (3-Hydroxyphenyl)hydracrylate | Generator | 3'-Hydroxyphenylhydracrylate | Generator | 3-(3-Hydroxyphenyl)-3-hydroxypropionate | Generator | 3-(3-Hydroxyphenyl)hydracrylate | Generator | 3-(m-Hydroxyphenyl)hydracrylate | Generator | 3-Hydroxy-3-(3-hydroxyphenyl)propionate | Generator | 3-Hydroxyphenyl-hydracrylate | Generator | b-(m-Hydroxyphenyl)hydracrylate | Generator | beta-(m-Hydroxyphenyl)hydracrylate | Generator | Β-(m-hydroxyphenyl)hydracrylate | Generator | Β-(m-hydroxyphenyl)hydracrylic acid | Generator | 3-(3-Hydroxyphenyl)-3-hydroxypropanoate | Generator | HPHPA CPD | HMDB | beta-(Meta-hydroxyphenyl)hydracrylic acid | HMDB | MHPHA | HMDB | 3-Hydroxy-3-(3'-hydroxyphenyl)propanoic acid | HMDB | 3-Hydroxy-3-(3-hydroxyphenyl)propanoic acid | HMDB | 3-(3'-Hydroxyphenyl)hydracrylic acid | | 3-Hydroxy-3-(3'-hydroxyphenyl)propionic acid | | beta, m-Dihydroxyphenylpropionic acid | | beta, meta-Dihydroxyphenylpropionic acid | | m-Hydroxyphenylhydracrylic acid | |
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Chemical Formula | C9H10O4 |
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Average Mass | 182.1733 Da |
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Monoisotopic Mass | 182.05791 Da |
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IUPAC Name | 3-hydroxy-3-(3-hydroxyphenyl)propanoic acid |
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Traditional Name | mhpha |
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CAS Registry Number | 3247-75-4 |
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SMILES | OC(CC(O)=O)C1=CC(O)=CC=C1 |
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InChI Identifier | InChI=1S/C9H10O4/c10-7-3-1-2-6(4-7)8(11)5-9(12)13/h1-4,8,10-11H,5H2,(H,12,13) |
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InChI Key | KHTAGVZHYUZYMF-UHFFFAOYSA-N |
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Experimental Spectra |
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| Spectrum Type | Description | Depositor Email | Depositor Organization | Depositor | Deposition Date | View |
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1D NMR | 1H NMR Spectrum (1D, 500 MHz, H2O, simulated) | V.dorna83 | | | 2021-08-23 | View Spectrum |
| Predicted Spectra |
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| Not Available | Chemical Shift Submissions |
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| Spectrum Type | Description | Depositor Email | Depositor Organization | Depositor | Deposition Date | View |
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1D NMR | 1H NMR Spectrum (1D, 500 MHz, H2O, simulated) | varshavi.d26@gmail.com | Not Available | Not Available | 2021-08-15 | View Spectrum | 1D NMR | 1H NMR Spectrum (1D, 500 MHz, H2O, simulated) | v.dorna83@yahoo.com | Not Available | Not Available | 2021-08-15 | View Spectrum |
| Species |
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Species of Origin | |
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Species Where Detected | |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as phenylpropanoic acids. Phenylpropanoic acids are compounds with a structure containing a benzene ring conjugated to a propanoic acid. |
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Kingdom | Organic compounds |
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Super Class | Phenylpropanoids and polyketides |
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Class | Phenylpropanoic acids |
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Sub Class | Not Available |
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Direct Parent | Phenylpropanoic acids |
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Alternative Parents | |
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Substituents | - 3-phenylpropanoic-acid
- 1-hydroxy-4-unsubstituted benzenoid
- 1-hydroxy-2-unsubstituted benzenoid
- Beta-hydroxy acid
- Phenol
- Monocyclic benzene moiety
- Hydroxy acid
- Benzenoid
- Secondary alcohol
- Carboxylic acid derivative
- Carboxylic acid
- Monocarboxylic acid or derivatives
- Hydrocarbon derivative
- Alcohol
- Carbonyl group
- Organic oxide
- Organic oxygen compound
- Organooxygen compound
- Aromatic alcohol
- Aromatic homomonocyclic compound
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Molecular Framework | Aromatic homomonocyclic compounds |
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External Descriptors | |
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Physical Properties |
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State | Solid |
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Experimental Properties | Property | Value | Reference |
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Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Predicted Properties | |
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General References | - Shaw W: Increased urinary excretion of a 3-(3-hydroxyphenyl)-3-hydroxypropionic acid (HPHPA), an abnormal phenylalanine metabolite of Clostridia spp. in the gastrointestinal tract, in urine samples from patients with autism and schizophrenia. Nutr Neurosci. 2010 Jun;13(3):135-43. doi: 10.1179/147683010X12611460763968. [PubMed:20423563 ]
- Kesli R, Gokcen C, Bulug U, Terzi Y: Investigation of the relation between anaerobic bacteria genus clostridium and late-onset autism etiology in children. J Immunoassay Immunochem. 2014;35(1):101-9. doi: 10.1080/15321819.2013.792834. [PubMed:24063620 ]
- Mussap M, Siracusano M, Noto A, Fattuoni C, Riccioni A, Rajula HSR, Fanos V, Curatolo P, Barberini L, Mazzone L: The Urine Metabolome of Young Autistic Children Correlates with Their Clinical Profile Severity. Metabolites. 2020 Nov 23;10(11). pii: metabo10110476. doi: 10.3390/metabo10110476. [PubMed:33238400 ]
- Noto A, Fanos V, Barberini L, Grapov D, Fattuoni C, Zaffanello M, Casanova A, Fenu G, De Giacomo A, De Angelis M, Moretti C, Papoff P, Ditonno R, Francavilla R: The urinary metabolomics profile of an Italian autistic children population and their unaffected siblings. J Matern Fetal Neonatal Med. 2014 Oct;27 Suppl 2:46-52. doi: 10.3109/14767058.2014.954784. [PubMed:25284177 ]
- Obrenovich ME, Donskey CJ, Schiefer IT, Bongiovanni R, Li L, Jaskiw GE: Quantification of phenolic acid metabolites in humans by LC-MS: a structural and targeted metabolomics approach. Bioanalysis. 2018 Oct;10(19):1591-1608. doi: 10.4155/bio-2018-0140. [PubMed:30295550 ]
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