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Luo B, Liu J, Xiong L, Fang C, He Y. Normal cerebral blood vessels under ultrasound in SD rats of different ages. IBRAIN 2022; 8:346-352. [PMID: 37786747 PMCID: PMC10528998 DOI: 10.1002/ibra.12035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 04/12/2022] [Accepted: 04/12/2022] [Indexed: 10/04/2023]
Abstract
The objective of this study was to examine whether ultrasound can examine the development of cerebral vascular structure and cerebral blood flow in Sprague-Dawley (SD) rats by ultrasound in a noninvasive manner, which provides a reference for ultrasound research of SD rats. Thirty-nine SD rats (7-16 days old) were divided into seven groups according to age, and the number of SD rats in each group was, respectively, 7, 17, 1, 3, 2, 8, and 1. Ultrasound was used to detect cerebral blood vessels, cerebrovascular flow velocity, and heart rate in SD rats in the sagittal and coronal positions, and images were obtained in B-mode ultrasound. The cerebral vascular structure of 39 SD rats (7-16 days) was dynamically observed under B-ultrasound. We found that the cerebral vascular structure of the rats aged 7-10 days was clear and detectable. Rats aged 11-16 days of cerebral vascular structures became thinner and undetectable. Quantitative analysis of cerebrovascular flow rate and heart rate in rats found that there was no significant difference in cerebrovascular blood flow rate and heart rate between 7 and 8 days. Ultrasound can also be used in rat animal studies, that is, the cerebral blood flow in rats of different ages can be monitored in real-time by ultrasound in a noninvasive way.
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Affiliation(s)
- Bo‐Yan Luo
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, School of PharmacyZunyi Medical UniversityZunyiGuizhouChina
| | - Jin‐Xiang Liu
- Animal Zoology Department, Institute of NeuroscienceKunming Medical UniversityKunmingChina
| | - Liu‐Lin Xiong
- Clinical and Health SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Chang‐Le Fang
- School of AnesthesiologySouthwest Medical UniversityLuzhouSichuanChina
| | - Yu‐Qi He
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, School of PharmacyZunyi Medical UniversityZunyiGuizhouChina
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2
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Examination of pituitary adenylate cyclase-activating polypeptide in Parkinson’s disease focusing on correlations with motor symptoms. GeroScience 2022; 44:785-803. [PMID: 35220508 PMCID: PMC9135934 DOI: 10.1007/s11357-022-00530-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 02/15/2022] [Indexed: 12/16/2022] Open
Abstract
The neuroprotective effects of pituitary adenylate cyclase-activating polypeptide (PACAP) have been shown in numerous in vitro and in vivo models of Parkinson’s disease (PD) supporting the theory that PACAP could have an important role in the pathomechanism of the disorder affecting mostly older patients. Earlier studies found changes in PACAP levels in neurological disorders; therefore, the aim of our study was to examine PACAP in plasma samples of PD patients. Peptide levels were measured with ELISA and correlated with clinical parameters, age, stage of the disorder based on the Hoehn and Yahr (HY) scale, subtype of the disease, treatment, and specific scores measuring motor and non-motor symptoms, such as movement disorder society-unified Parkinson’s disease rating scale (MDS-UPDRS), Epworth sleepiness scale (ESS), Parkinson’s disease sleep scale (PDSS-2), and Beck depression inventory (BDI). Our results showed significantly decreased PACAP levels in PD patients without deep brain stimulation (DBS) therapy and in akinetic-rigid subtype; additionally we also observed a further decrease in the HY stage 3 and 4. Elevated PACAP levels were found in patients with DBS. There were no significant correlations between PACAP level with MDS-UPDRS, type of pharmacological treatment, PDSS-2 sleepiness, or depression (BDI) scales, but we found increased PACAP level in patients with more severe sleepiness problems based on the ESS scale. Based on these results, we suggest that following the alterations of PACAP with other frequently used clinical biomarkers in PD patients might improve strategic planning of further therapeutic interventions and help to provide a clearer prognosis regarding the future perspective of the disease.
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Li R, Zhai T, Zhao L, Zhang N, He M, Tan L. Preparation of poly(caffeic acid)-CoP nanoparticle film on electrode surface and sensitive voltammetric detection of acetaminophen. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Labib AY, Ammar RM, El-Naga RN, El-Bahy AAZ, Tadros MG, Michel HE. Mechanistic insights into the protective effect of paracetamol against rotenone-induced Parkinson's disease in rats: Possible role of endocannabinoid system modulation. Int Immunopharmacol 2021; 94:107431. [PMID: 33578261 DOI: 10.1016/j.intimp.2021.107431] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 12/17/2022]
Abstract
Parkinson's disease (PD) is a disabling progressive neurodegenerative disease. So far, PD's treatment remains symptomatic with no curative effects. Aside from its blatant analgesic and antipyretic efficacy, recent studies highlighted the endowed neuroprotective potentials of paracetamol (PCM). To this end: the present study investigated: (1) Possible protective role of PCM against rotenone-induced PD-like neurotoxicity in rats, and (2) the mechanisms underlying its neuroprotective actions including cannabinoid receptors' modulation. A dose-response study was conducted using three doses of PCM (25, 50, and 100 mg/kg/day, i.p.) and their effects on body weight changes, spontaneous locomotor activity, rotarod test, tyrosine hydroxylase (TH) and α-synuclein expression, and striatal dopamine (DA) content were evaluated. Results revealed that PCM (100 mg/kg/day, i.p.) halted PD motor impairment, prevented rotenone-induced weight loss, restored normal histological tissue structure, reversed rotenone-induced reduction in TH expression and striatal DA content, and markedly decreased midbrain and striatal α-synuclein expression in rotenone-treated rats. Accordingly, PCM (100 mg/kg/day, i.p.) was selected for further mechanistic investigations, where it ameliorated rotenone-induced oxidative stress, neuro-inflammation, apoptosis, and disturbed cannabinoid receptors' expression. In conclusion, our findings imply a multi-target neuroprotective effect of PCM in PD which could be attributed to its antioxidant, anti-inflammatory and anti-apoptotic activities, in addition to cannabinoid receptors' modulation.
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Affiliation(s)
- Aya Yassin Labib
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Heliopolis University for Sustainable Development, Cairo, Egypt
| | - Ramy M Ammar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - Reem N El-Naga
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Alshaymaa Amin Zaki El-Bahy
- Department of Pharmacology and Toxicology, School of Pharmaceutical Science, University of Hertfordshire, Hosted by Global Academic Foundation, New Administrative City, Egypt
| | - Mariane G Tadros
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Haidy E Michel
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
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Jungling A, Reglodi D, Maasz G, Zrinyi Z, Schmidt J, Rivnyak A, Horvath G, Pirger Z, Tamas A. Alterations of Nigral Dopamine Levels in Parkinson's Disease after Environmental Enrichment and PACAP Treatment in Aging Rats. Life (Basel) 2021; 11:life11010035. [PMID: 33429934 PMCID: PMC7827131 DOI: 10.3390/life11010035] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 11/16/2022] Open
Abstract
The neuroprotective effects of environmental enrichment and PACAP (pituitary adenylate cyclase-activating polypeptide) are well-described in Parkinson’s disease. The aim of our study is to investigate the beneficial effects of these factors in aging parkinsonian rats. Newborn Wistar rats were divided into standard and enriched groups according to their environmental conditions. Standard animals were raised under regular conditions. During the first five postnatal weeks, enriched pups were placed in larger cages with different objects. Aging animals received (1) saline, (2) 6-hydroxidopamine (6-OHDA), or (3) 6-OHDA + PACAP injections into the left substantia nigra (s.n.). On the seventh postoperative day, the left and right s.n. were collected. The s.n. of young and aging unoperated animals were also examined in our experiment. We determined the dopamine (DA) levels by the HPLC-MS technique, while the sandwich ELISA method was used to measure the Parkinson disease protein 7 (PARK7) protein levels. In healthy animals, we found an age-related decrease of DA levels. In aging parkinsonian-enriched rats, the operation did not result in a significant DA loss. PACAP treatment could prevent the DA loss in both the standard and enriched groups. All injured PACAP-treated rats showed remarkably higher protective PARK7 levels. The protective effect of PACAP correlated with the increase of the DA and PARK7 levels.
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Affiliation(s)
- Adel Jungling
- MTA-PTE PACAP Research Team, Department of Anatomy, Medical School, University of Pecs, 7624 Pecs, Hungary; (A.J.); (D.R.); (A.R.); (G.H.)
| | - Dora Reglodi
- MTA-PTE PACAP Research Team, Department of Anatomy, Medical School, University of Pecs, 7624 Pecs, Hungary; (A.J.); (D.R.); (A.R.); (G.H.)
| | - Gabor Maasz
- MTA-OK BLI NAP_B Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, MTA-CER, 8237 Tihany, Hungary; (G.M.); (Z.Z.); (Z.P.)
| | - Zita Zrinyi
- MTA-OK BLI NAP_B Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, MTA-CER, 8237 Tihany, Hungary; (G.M.); (Z.Z.); (Z.P.)
| | - Janos Schmidt
- Institute of Biochemistry and Medical Chemistry, Medical School, University of Pecs, 7624 Pecs, Hungary;
| | - Adam Rivnyak
- MTA-PTE PACAP Research Team, Department of Anatomy, Medical School, University of Pecs, 7624 Pecs, Hungary; (A.J.); (D.R.); (A.R.); (G.H.)
| | - Gabor Horvath
- MTA-PTE PACAP Research Team, Department of Anatomy, Medical School, University of Pecs, 7624 Pecs, Hungary; (A.J.); (D.R.); (A.R.); (G.H.)
| | - Zsolt Pirger
- MTA-OK BLI NAP_B Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, MTA-CER, 8237 Tihany, Hungary; (G.M.); (Z.Z.); (Z.P.)
| | - Andrea Tamas
- MTA-PTE PACAP Research Team, Department of Anatomy, Medical School, University of Pecs, 7624 Pecs, Hungary; (A.J.); (D.R.); (A.R.); (G.H.)
- Correspondence: or ; Tel.: +36-72-536-001 (ext. 36421)
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Abstract
Dysregulation of neuropeptides may play an important role in aging-induced impairments. In the long list of neuropeptides, pituitary adenylate cyclase-activating polypeptide (PACAP) represents a highly effective cytoprotective peptide that provides an endogenous control against a variety of tissue-damaging stimuli. PACAP has neuro- and general cytoprotective effects due to anti-apoptotic, anti-inflammatory, and antioxidant actions. As PACAP is also a part of the endogenous protective machinery, it can be hypothesized that the decreased protective effects in lack of endogenous PACAP would accelerate age-related degeneration and PACAP knockout mice would display age-related degenerative signs earlier. Recent results support this hypothesis showing that PACAP deficiency mimics aspects of age-related pathophysiological changes including increased neuronal vulnerability and systemic degeneration accompanied by increased apoptosis, oxidative stress, and inflammation. Decrease in PACAP expression has been shown in different species from invertebrates to humans. PACAP-deficient mice display numerous pathological alterations mimicking early aging, such as retinal changes, corneal keratinization and blurring, and systemic amyloidosis. In the present review, we summarize these findings and propose that PACAP deficiency could be a good model of premature aging.
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Reglodi D, Jungling A, Longuespée R, Kriegsmann J, Casadonte R, Kriegsmann M, Juhasz T, Bardosi S, Tamas A, Fulop BD, Kovacs K, Nagy Z, Sparks J, Miseta A, Mazzucchelli G, Hashimoto H, Bardosi A. Accelerated pre-senile systemic amyloidosis in PACAP knockout mice - a protective role of PACAP in age-related degenerative processes. J Pathol 2018; 245:478-490. [PMID: 29774542 PMCID: PMC6055756 DOI: 10.1002/path.5100] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 04/10/2018] [Accepted: 05/12/2018] [Indexed: 12/14/2022]
Abstract
Dysregulation of neuropeptides may play an important role in aging‐induced impairments. Among them, pituitary adenylate cyclase‐activating polypeptide (PACAP) is a potent cytoprotective peptide that provides an endogenous control against a variety of tissue‐damaging stimuli. We hypothesized that the progressive decline of PACAP throughout life and the well‐known general cytoprotective effects of PACAP lead to age‐related pathophysiological changes in PACAP deficiency, supported by the increased vulnerability to various stressors of animals partially or totally lacking PACAP. Using young and aging CD1 PACAP knockout (KO) and wild type (WT) mice, we demonstrated pre‐senile amyloidosis in young PACAP KO animals and showed that senile amyloidosis appeared accelerated, more generalized, more severe, and affected more individuals. Histopathology showed age‐related systemic amyloidosis with mainly kidney, spleen, liver, skin, thyroid, intestinal, tracheal, and esophageal involvement. Mass spectrometry‐based proteomic analysis, reconfirmed with immunohistochemistry, revealed that apolipoprotein‐AIV was the main amyloid protein in the deposits together with several accompanying proteins. Although the local amyloidogenic protein expression was disturbed in KO animals, no difference was found in laboratory lipid parameters, suggesting a complex pathway leading to increased age‐related degeneration with amyloid deposits in the absence of PACAP. In spite of no marked inflammatory histological changes or blood test parameters, we detected a disturbed cytokine profile that possibly creates a pro‐inflammatory milieu favoring amyloid deposition. In summary, here we describe accelerated systemic senile amyloidosis in PACAP gene‐deficient mice, which might indicate an early aging phenomenon in this mouse strain. Thus, PACAP KO mice could serve as a model of accelerated aging with human relevance. © 2018 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Dora Reglodi
- Department of Anatomy, MTA-PTE PACAP Research Group, University of Pecs Medical School, Pécs, Hungary
| | - Adel Jungling
- Department of Anatomy, MTA-PTE PACAP Research Group, University of Pecs Medical School, Pécs, Hungary
| | - Rémi Longuespée
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - Joerg Kriegsmann
- Center for Histology, Cytology and Molecular Diagnostics, Trier, Germany.,Proteopath GmbH, Trier, Germany
| | | | - Mark Kriegsmann
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - Tamas Juhasz
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Hungary
| | - Sebastian Bardosi
- Center for Histology, Cytology and Molecular Diagnostics, Trier, Germany
| | - Andrea Tamas
- Department of Anatomy, MTA-PTE PACAP Research Group, University of Pecs Medical School, Pécs, Hungary
| | - Balazs Daniel Fulop
- Department of Anatomy, MTA-PTE PACAP Research Group, University of Pecs Medical School, Pécs, Hungary
| | - Krisztina Kovacs
- Department of Biochemistry and Medical Chemistry, University of Pecs Medical School, Pécs, Hungary
| | - Zsuzsanna Nagy
- Second Department of Internal Medicine, University of Pecs Medical School, Pécs, Hungary
| | - Jason Sparks
- Department of Anatomy, MTA-PTE PACAP Research Group, University of Pecs Medical School, Pécs, Hungary
| | - Attila Miseta
- Department of Laboratory Medicine and Szentagothai Research Centre, University of Pecs Medical School, Pécs, Hungary
| | - Gabriel Mazzucchelli
- Laboratory of Mass Spectrometry (LSM) - MolSys, Department of Chemistry, University of Liège, Belgium
| | - Hitoshi Hashimoto
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Japan
| | - Attila Bardosi
- Center for Histology, Cytology and Molecular Diagnostics, Trier, Germany
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Alteration of the PAC1 Receptor Expression in the Basal Ganglia of MPTP-Induced Parkinsonian Macaque Monkeys. Neurotox Res 2017; 33:702-715. [PMID: 29230633 DOI: 10.1007/s12640-017-9841-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 09/14/2017] [Accepted: 09/20/2017] [Indexed: 12/22/2022]
Abstract
Pituitary adenylate cyclase-activating polypeptide (PACAP) is a well-known neuropeptide with strong neurotrophic and neuroprotective effects. PACAP exerts its protective actions via three G protein-coupled receptors: the specific Pac1 receptor (Pac1R) and the Vpac1/Vpac2 receptors, the neuroprotective effects being mainly mediated by the Pac1R. The protective role of PACAP in models of Parkinson's disease and other neurodegenerative diseases is now well-established in both in vitro and in vivo studies. PACAP and its receptors occur in the mammalian brain, including regions associated with Parkinson's disease. PACAP receptor upregulation or downregulation has been reported in several injury models or human diseases, but no data are available on alterations of receptor expression in Parkinson's disease. The model closest to the human disease is the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced macaque model. Therefore, our present aim was to evaluate changes in Pac1R expression in basal ganglia related to Parkinson's disease in a macaque model. Monkeys were rendered parkinsonian with MPTP, and striatum, pallidum, and cortex were evaluated for Pac1R immunostaining. We found that Pac1R immunosignal was markedly reduced in the caudate nucleus, putamen, and internal and external parts of the globus pallidus, while the immunoreactivity remained unchanged in the cortex of MPTP-treated parkinsonian monkey brains. This decrease was attenuated in some brain areas in monkeys treated with L-DOPA. The strong, specific decrease of the PACAP receptor immunosignal in the basal ganglia of parkinsonian macaque monkey brains suggests that the PACAP/Pac1R system may play an important role in the development/progression of the disease.
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Ivic I, Solymar M, Fulop BD, Hashimoto H, Toth G, Tamas A, Juhasz T, Koller A, Reglodi D. Aging-Induced Modulation of Pituitary Adenylate Cyclase-Activating Peptide- and Vasoactive Intestinal Peptide-Induced Vasomotor Responses in the Arteries of Mice. J Vasc Res 2017; 54:359-366. [PMID: 29131060 DOI: 10.1159/000481781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 09/23/2017] [Indexed: 12/17/2022] Open
Abstract
Pituitary adenylate cyclase-activating peptide (PACAP; 1-38 and 1-27) and vasoactive intestinal peptide (VIP) are related neuropeptides of the secretin/glucagon family. Overlapping signaling through G-protein-coupled receptors mediates their vasomotor activity. We previously showed that PACAP deficiency (PACAP-KO) shifts the mechanisms of vascular response and maintains arterial relaxation through the VIP backup mechanism and (mainly) its VPAC1R, but their age-dependent modulation is still unknown. We hypothesized that backup mechanisms exist, which maintain the vasomotor activity of these peptides also in older age. Thus, we investigated the effects of exogenous VIP and PACAP peptides in isolated carotid arteries of 2- and 15-month-old wild-type (WT) and PACAP-KO mice. All peptides induced relaxation in the arteries of young WT mice, whereas in young PACAP-KO mice PACAP1-27 and VIP, but not PACAP1-38, induced relaxation. Unlike VIP, PACAP-induced vasomotor responses were reduced in aging WT mice. However, in the arteries of aging PACAP-KO mice, PACAP1-27- and VIP-induced responses were reduced, but PACAP1-38 showed a greater vasomotor response compared to that of young PACAP-KO animals. There were no significant differences between the vasomotor responses of aging WT and PACAP-KO mice. Our data suggest that, in the absence of PACAP both in young and old ages, the vascular response is mediated through backup mechanisms, most likely VIP, maintaining proper vascular relaxation in aging-induced PACAP insufficiency.
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Affiliation(s)
- Ivan Ivic
- Department of Anatomy, MTA-PTE PACAP Research Group, Medical School, University of Pecs, Pecs, Hungary
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Vanzella C, Neves JD, Vizuete AF, Aristimunha D, Kolling J, Longoni A, Gonçalves CAS, Wyse AT, Netto CA. Treadmill running prevents age-related memory deficit and alters neurotrophic factors and oxidative damage in the hippocampus of Wistar rats. Behav Brain Res 2017; 334:78-85. [DOI: 10.1016/j.bbr.2017.07.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 06/30/2017] [Accepted: 07/25/2017] [Indexed: 10/19/2022]
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Novel tactics for neuroprotection in Parkinson's disease: Role of antibiotics, polyphenols and neuropeptides. Prog Neurobiol 2017; 155:120-148. [DOI: 10.1016/j.pneurobio.2015.10.004] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Revised: 10/08/2015] [Accepted: 10/26/2015] [Indexed: 02/04/2023]
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12
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Yisarakun W, Chantong C, Supornsilpchai W, Thongtan T, Srikiatkhachorn A, Reuangwechvorachai P, Maneesri-le Grand S. Up-regulation of calcitonin gene-related peptide in trigeminal ganglion following chronic exposure to paracetamol in a CSD migraine animal model. Neuropeptides 2015; 51:9-16. [PMID: 25998753 DOI: 10.1016/j.npep.2015.03.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 03/02/2015] [Accepted: 03/30/2015] [Indexed: 12/24/2022]
Abstract
Previously, our group has demonstrated that chronic paracetamol (APAP) treatment induces alterations to the trigeminovascular nociceptive system in the cortical spreading depression (CSD) migraine animal model. The calcitonin gene related peptide (CGRP) is a key neuropeptide involved in the activation of the trigeminovascular nociceptive system. Therefore, this study examined the expression levels of CGRP in the trigeminal ganglion (TG) after chronic APAP exposure (0, 15, and 30 days) using a CSD model. Rats were divided into control, CSD only, APAP only and APAP treatment with CSD groups. A single injection (i.p.) of APAP (200 mg/kg body weight) was given to the 0-day APAP-treated groups, while the other APAP-treated groups received daily injections for 15 and 30 days. CSD was induced by the topical application of KCl to the parietal cortex. The protein expression of CGRP in the TG was evaluated by immunohistochemistry, and the CGRP mRNA level was investigated by real-time quantitative reverse transcription polymerase chain reaction. The results revealed that the induction of CSD significantly increased the level of CGRP protein but had no effect on CGRP mRNA level. Pretreatment with APAP 1 hour before CSD activation significantly reduced CGRP expression induced by CSD. In contrast, chronic treatment with APAP (15 and 30 days) significantly enhanced CGRP expression in both protein and mRNA levels when compared with the control groups. In combination with CSD, the expression of CGRP further increased in the animal with 30 day treatment. These findings indicate that chronic treatment with APAP induces an increase of CGRP expression in the TG. This alteration may be associated with the increased trigeminovascular nociception observed in our previous studies.
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Affiliation(s)
- Waranurin Yisarakun
- Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chattraporn Chantong
- Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Weera Supornsilpchai
- Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Thananya Thongtan
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anan Srikiatkhachorn
- Department of Physiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | | | - Supang Maneesri-le Grand
- Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.
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Banki E, Sosnowska D, Tucsek Z, Gautam T, Toth P, Tarantini S, Tamas A, Helyes Z, Reglodi D, Sonntag WE, Csiszar A, Ungvari Z. Age-related decline of autocrine pituitary adenylate cyclase-activating polypeptide impairs angiogenic capacity of rat cerebromicrovascular endothelial cells. J Gerontol A Biol Sci Med Sci 2014; 70:665-74. [PMID: 25136000 DOI: 10.1093/gerona/glu116] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 06/11/2014] [Indexed: 01/16/2023] Open
Abstract
Aging impairs angiogenic capacity of cerebromicrovascular endothelial cells (CMVECs) promoting microvascular rarefaction, but the underlying mechanisms remain elusive. PACAP is an evolutionarily conserved neuropeptide secreted by endothelial cells and neurons, which confers important antiaging effects. To test the hypothesis that age-related changes in autocrine PACAP signaling contributes to dysregulation of endothelial angiogenic capacity, primary CMVECs were isolated from 3-month-old (young) and 24-month-old (aged) Fischer 344 x Brown Norway rats. In aged CMVECs, expression of PACAP was decreased, which was associated with impaired capacity to form capillary-like structures, impaired adhesiveness to collagen (assessed using electric cell-substrate impedance sensing [ECIS] technology), and increased apoptosis (caspase3 activity) when compared with young cells. Overexpression of PACAP in aged CMVECs resulted in increased formation of capillary-like structures, whereas it did not affect cell adhesion. Treatment with recombinant PACAP also significantly increased endothelial tube formation and inhibited apoptosis in aged CMVECs. In young CMVECs shRNA knockdown of autocrine PACAP expression significantly impaired tube formation capacity, mimicking the aging phenotype. Cellular and mitochondrial reactive oxygen species production (dihydroethidium and MitoSox fluorescence, respectively) were increased in aged CMVECs and were unaffected by PACAP. Collectively, PACAP exerts proangiogenic effects and age-related dysregulation of autocrine PACAP signaling may contribute to impaired angiogenic capacity of CMVECs in aging.
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Affiliation(s)
- Eszter Banki
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center. Department of Anatomy, MTA-PTE PACAP Lendulet Research Team
| | - Danuta Sosnowska
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center
| | - Zsuzsanna Tucsek
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center
| | - Tripti Gautam
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center
| | - Peter Toth
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center
| | - Stefano Tarantini
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center
| | - Andrea Tamas
- Department of Anatomy, MTA-PTE PACAP Lendulet Research Team
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Szentágothai Research Center, and
| | - Dora Reglodi
- Department of Anatomy, MTA-PTE PACAP Lendulet Research Team
| | - William E Sonntag
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center
| | - Anna Csiszar
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center. Department of Pathophysiology and Gerontology, Medical School and Szentagothai Research Center, University of Pécs, Hungary. Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center
| | - Zoltan Ungvari
- Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center. Department of Pathophysiology and Gerontology, Medical School and Szentagothai Research Center, University of Pécs, Hungary. Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center.
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14
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Tang Y, Wang J, Lin X, Wang L, Shao B, Jin K, Wang Y, Yang GY. Neural stem cell protects aged rat brain from ischemia-reperfusion injury through neurogenesis and angiogenesis. J Cereb Blood Flow Metab 2014; 34:1138-47. [PMID: 24714034 PMCID: PMC4083376 DOI: 10.1038/jcbfm.2014.61] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 03/04/2014] [Accepted: 03/05/2014] [Indexed: 12/28/2022]
Abstract
Neural stem cells (NSCs) show therapeutic potential for ischemia in young-adult animals. However, the effect of aging on NSC therapy is largely unknown. In this work, NSCs were transplanted into aged (24-month-old) and young-adult (3-month-old) rats at 1 day after stroke. Infarct volume and neurobehavioral outcomes were examined. The number of differentiated NSCs was compared in aged and young-adult ischemic rats and angiogenesis and neurogenesis were also determined. We found that aged rats developed larger infarcts than young-adult rats after ischemia (P<0.05). The neurobehavioral outcome was also worse for aged rats comparing with young-adult rats. Brain infarction and neurologic deficits were attenuated after NSC transplantation in both aged and young-adult rats. The number of survived NSCs in aged rats was similar to that of the young-adult rats (P>0.05) and most of them were differentiated into glial fibrillary acidic protein(+) (GFAP(+)) cells. More importantly, angiogenesis and neurogenesis were greatly enhanced in both aged and young-adult rats after transplantation compared with phosphate-buffered saline (PBS) control (P<0.05), accompanied by increased expression of vascular endothelial growth factor (VEGF). Our results showed that NSC therapy reduced ischemic brain injury, along with increased angiogenesis and neurogenesis in aged rats, suggesting that aging-related microenvironment does not preclude a beneficial response to NSCs transplantation during cerebral ischemia.
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Affiliation(s)
- Yaohui Tang
- Neuroscience and Neuroengineering Center, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Jixian Wang
- Department of Neurology, Shanghai Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaojie Lin
- Neuroscience and Neuroengineering Center, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Liuqing Wang
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research the First Affiliated Hospital, Department of Neurology, Wenzhou Medical College, Zhejiang, China
| | - Bei Shao
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research the First Affiliated Hospital, Department of Neurology, Wenzhou Medical College, Zhejiang, China
| | - Kunlin Jin
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Yongting Wang
- Neuroscience and Neuroengineering Center, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Guo-Yuan Yang
- 1] Neuroscience and Neuroengineering Center, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China [2] Department of Neurology, Shanghai Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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15
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Wilhelm I, Fazakas C, Tamás A, Tóth G, Reglődi D, Krizbai IA. PACAP enhances barrier properties of cerebral microvessels. J Mol Neurosci 2014; 54:469-76. [PMID: 24614973 DOI: 10.1007/s12031-014-0260-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 02/06/2014] [Indexed: 01/10/2023]
Abstract
Cerebral microvascular endothelial cells-coming in contact with pericytes and astrocytes-constitute the structural basis of the blood-brain barrier (BBB). The continuous belt of interendothelial tight junctions (TJs) and the presence of specific transport systems, enzymes, and receptors in the brain endothelium regulate the molecular and cellular traffic into the central nervous system. Pituitary adenylate cyclase-activating polypeptide (PACAP) is a neuropeptide having several cellular protective effects. However, little is known about the effects of PACAP on the cerebral endothelium and BBB functions. Here, we show that PACAP has no significant pro-survival role in cerebral microvascular endothelial cells; however, it improves the barrier properties of the brain endothelium. PACAP induces an increase in the transendothelial electrical resistance, which is the most important marker of the tightness of the TJs. Moreover, PACAP has a protective role against glucose deprivation- and oxidative stress-induced junctional damage in microvascular brain endothelial cells.
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Affiliation(s)
- Imola Wilhelm
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
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