Evidence map›Paper›PMID 33666819›Full record

ArticleMetabolic brain disease2021

Protective mechanism of Syringic acid in an experimental model of Parkinson's disease.

Özge Güzelad, Ayşe Özkan, Hande Parlak, Osman Sinen, Ebru Afşar, Eren Öğüt, Fatoş Belgin Yıldırım, Mehmet Bülbül, Aysel Ağar, Mutay Aslan

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In one paragraph

Article in Metabolic brain disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.5field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 51 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Özge GüzeladDepartment of Anatomy, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Ayşe ÖzkanDepartment of Physiology, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Hande ParlakDepartment of Physiology, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Osman SinenDepartment of Physiology, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Ebru AfşarDepartment of Biochemistry, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Eren ÖğütDepartment of Anatomy, School of Medicine, Bahçeşehir University, 34734, İstanbul, Turkey.
Fatoş Belgin YıldırımDepartment of Anatomy, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Mehmet BülbülDepartment of Physiology, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Aysel AğarDepartment of Physiology, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey.
Mutay AslanDepartment of Biochemistry, Faculty of Medicine, Akdeniz University, 07070, Antalya, Turkey. mutayaslan@akdeniz.edu.tr.ORCID http://orcid.org/0000-0002-0660-971X
Akdeniz University · TRBahçeşehir University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

6-Hydroxydopamine (6-OHDA) is a widely used chemical to model Parkinson's disease (PD) in rats. Syringic acid (SA) is a polyphenolic compound which has antioxidant and anti-inflammatory properties. The present study aimed to evaluate the neuroprotective role of SA in a rat model of 6-OHDA-induced PD. Parkinson's disease was created by injection of 6-OHDA into the medial forebrain bundle via stereotaxic surgery. Syringic acid was administered daily by oral gavage, before or after surgery. All groups were tested for locomotor activity, rotarod performance and catatony. Dopamine levels in SN were determined by an optimized multiple reaction monitoring method using ultra-fast liquid chromatography coupled with tandem mass spectrometry (MS/MS). The immunoreactivities for tyrosine hydroxylase (TH) and inducible nitric oxide synthase (iNOS) were detected by immunohistochemistry in frozen substantia nigra (SN) sections. Nitrite/nitrate levels, iNOS protein, total oxidant (TOS) and total antioxidant (TAS) status were assayed in SN tissue by standard kits. Motor dysfunction, impaired nigral dopamine release, increased iNOS expression and elevated nitrite/nitrate levels induced by 6-OHDA were significantly restored by SA treatment. Syringic acid significantly improved the loss of nigral TH-positive cells, while increasing TAS capacity and reducing TOS capacity in SN of PD rats. These data conclude that SA is a potential therapeutic agent for the treatment of 6-OHDA-induced rat model of PD. Syringic acid reduced the progression of PD via its neuroprotective, antioxidant and anti-inflammatory effects.

Indexed as

AnimalsDopamineDopaminergic NeuronsGallic AcidMaleMotor ActivityNeuroprotective AgentsNitric Oxide Synthase Type IIOxidopamineParkinsonian DisordersRatsRats, WistarSubstantia NigraTandem Mass SpectrometryTyrosine 3-MonooxygenaseDopamineGallic AcidNeuroprotective AgentsNitric Oxide Synthase Type IIOxidopaminesyringic acidTyrosine 3-Monooxygenase6-HydroxydopamineInducible nitric oxide synthaseParkinson’s diseaseSyringic acid

Identifiers

PMID33666819
OpenAlexW3134334952

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.