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Okello E, Beaton A. Rheumatic Heart Disease Research Collaborative in Uganda. Circulation 2023; 147:1785-1787. [PMID: 37307311 DOI: 10.1161/circulationaha.123.063748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Emmy Okello
- From the Uganda Heart Institute, Kampala (E.O.)
| | - Andrea Beaton
- Cincinnati Children's Hospital Medical Center; and University of Cincinnati School of Medicine, Ohio (A.B.)
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Du X, Li B, Cai Q, Qiao S, Wang Z, Li Z, Li Y, Meng W. D-aspartic acid protects against gingival fibroblasts inflammation by suppressing pyroptosis. Mol Biol Rep 2022; 49:5821-5829. [PMID: 35716284 DOI: 10.1007/s11033-022-07335-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/19/2022] [Accepted: 03/02/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Peri-implantitis is the main cause of dental implant failure, which is associated with pyroptosis. The roles of D-aspartic acid (D-Asp) on pyroptosis and the mechanism of the protective effect of D-Asp on human gingival fibroblasts (HGFs) remain unknown. This study investigated the effects of D-Asp on the pyroptosis of HGFs induced by high mobility group box 1 protein (HMGB1). METHODS The cytotoxic effects of D-Asp on HGFs was detected by Cell Counting Kit-8 assay, the membrane permeability was investigated by propidium iodide/ Hoechst 33,342 double staining, flow cytometry analysis, and lactate dehydrogenase releasing, The gene and protein expression levels were detected by real-time quantitative PCR, enzyme-linked immunosorbent assay, and Western blot, respectively. RESULTS Cell viability analysis showed that D-Asp ≤ 30 mM had no cytotoxicity to HGFs. HMGB1 drastically raised the membrane permeability of HGFs, while 1/10/30 mM D-Asp suppressed the permeability and remained the integrity of the membrane. HMGB1 promoted the mRNA expression of NLRP3, caspase-1, GSDMD, IL-1β, and IL-18, and the protein expression of IL-1β, IL-18, caspase-1, GSDMD, and NLRP3. CONCLUSIONS With the pretreatment of HGFs with D-Asp of 1/10/30 mM for 24 h, the cell membrane permeability was reduced and the expression of NLRP3, caspase-1, GSDMD, IL-1β, and IL-18 was significantly decreased compared with the HMGB1 group, indicating the competitive antagonism of D-Asp against HMGB1 on the binding with toll-like receptors. Hence, this study may provide a novel insight into preventing pyroptosis and propose a new strategy for the treatment of peri-implantitis.
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Affiliation(s)
- Xuechun Du
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, Jilin, China
| | - Baosheng Li
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China
| | - Qing Cai
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China
| | - Shuwei Qiao
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, Jilin, China
| | - Zixuan Wang
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, Jilin, China
| | - Zhen Li
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, Jilin, China
| | - Yuyang Li
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China.,Department of Cariology and Endodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Weiyan Meng
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, 130021, Changchun, Jilin, China.
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Siahaan T, Reckert A, Becker J, Eickhoff SB, Koop B, Gündüz T, Böhme P, Mayer F, Küppers L, Wagner W, Ritz-Timme S. Molecular and morphological findings in a sample of oral surgery patients: What can we learn for multivariate concepts for age estimation? J Forensic Sci 2021; 66:1524-1532. [PMID: 33942892 DOI: 10.1111/1556-4029.14704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/16/2021] [Accepted: 03/01/2021] [Indexed: 01/15/2023]
Abstract
It has already been proposed that a combined use of different molecular and morphological markers of aging in multivariate models may result in a greater accuracy of age estimation. However, such an approach can be complex and expensive, and not every combination may be useful. The significance and usefulness of combined analyses of D-aspartic acid in dentine, pentosidine in dentine, DNA methylation in buccal swabs at five genomic regions (PDE4C, RPA2, ELOVL2, DDO, and EDARADD), and third molar mineralization were tested by investigating a sample of 90 oral surgery patients. Machine learning models for age estimation were trained and evaluated, and the contribution of each parameter to multivariate models was tested by assessment of the predictor importance. For models based on D-aspartic acid, pentosidine, and the combination of both, mean absolute errors (MAEs) of 2.93, 3.41, and 2.68 years were calculated, respectively. The additional inclusion of the five DNAm markers did not improve the results. The sole DNAm-based model revealed a MAE of 4.14 years. In individuals under 28 years of age, the combination of the DNAm markers with the third molar mineralization stages reduced the MAE from 3.85 to 2.81 years. Our findings confirm that the combination of parameters in multivariate models may be very useful for age estimation. However, the inclusion of many parameters does not necessarily lead to better results. It is a task for future research to identify the best selection of parameters for the different requirements in forensic practice.
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Affiliation(s)
- Tatjana Siahaan
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Alexandra Reckert
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Julia Becker
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Simon B Eickhoff
- Institute for Systems Neuroscience, University Hospital Duesseldorf, Duesseldorf, Germany.,Institute of Neuroscience and Medicine, Brain & Behaviour (INM-7), Research Centre Juelich, Juelich, Germany
| | - Barbara Koop
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Tanju Gündüz
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Petra Böhme
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Felix Mayer
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Lisa Küppers
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Wolfgang Wagner
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, Aachen, Germany
| | - Stefanie Ritz-Timme
- Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany
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Venditti M, Romano MZ, Aniello F, Minucci S. Preliminary Investigation on the Ameliorative Role Exerted by D-Aspartic Acid in Counteracting Ethane Dimethane Sulfonate (EDS) Toxicity in the Rat Testis. Animals (Basel) 2021; 11:ani11010133. [PMID: 33435542 PMCID: PMC7827869 DOI: 10.3390/ani11010133] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/06/2021] [Accepted: 01/07/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary For proper fertility, the production of good-quality spermatozoa is essential. Nowadays, many environmental pollutants affect the spermatogenetic process, at different levels. For this reason, new approaches are needed to prevent/counteract these toxic effects. Here, we showed that the excitatory amino acid D-aspartic acid (D-Asp) prevents the deadly action of ethane dimethane sulfonate (EDS) on the testosterone-secreting Leydig cells in rat testis. We found that EDS, probably via the reduced testosterone level, alters the normal histology of the seminiferous epithelium, leading to germ cells death and to the decreased protein level of two Leydig cell “markers”: steroidogenic acute regulatory and prolyl endopeptidase. In addition, the same analysis performed on rats that were pre-treated with D-Asp revealed a protective role of this compound, since all the above parameters were quite normal. Moreover, we found that the protective mechanism of action involved in this scenario may be due to the ability of D-Asp to reduce the oxidative stress induced by EDS. Based on these findings, we could affirm that D-Asp may be an encouraging candidate to be used to alleviate the harmful action due to environmental pollutants exposure, in order to maintain appropriate fertility. Abstract Herein is reported the first evidence of the protective role of D-aspartic acid (D-Asp) in preventing the toxic effect exerted by the alkylating agent ethane dimethane sulfonate (EDS) in the rat testis. We confirmed that EDS treatment specifically destroyed Leydig cells (LC), resulting in the drastic decrease of the serum testosterone level and producing morphological changes in the germinal tubules, i.e., altered organization of the epithelium, loss of cell contacts and the consequent presence of empty spaces between them, and a reduce number of spermatozoa. Moreover, an increase of TUNEL-positive germ cells, other than alteration in the protein level and localization of two LC “markers”, StAR and PREP, were observed. Interestingly, results obtained from rats pre-treated with D-Asp for 15 days before EDS-injection showed that all the considered parameters were quite normal. To explore the probable mechanism(s) involved in the protection exerted by D-Asp, we considered the increased oxidative stress induced by EDS and the D-Asp antioxidant effects. Thiobarbiturc acid-reactive species (TBARS) levels increased following EDS-injection, while no change was observed in the D-Asp + EDS treated rats. Our results showed that D-Asp may be used as a strategy to mitigate the toxic effects exerted by environmental pollutants, as endocrine disrupters, in order to preserve the reproductive function.
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Affiliation(s)
- Massimo Venditti
- Dipartimento di Medicina Sperimentale, Sez. Fisiologia Umana e Funzioni Biologiche Integrate “F. Bottazzi”, Università della Campania “Luigi Vanvitelli”, Via Costantinopoli, 16, 80138 Napoli, Italy; (M.V.); (M.Z.R.)
| | - Maria Zelinda Romano
- Dipartimento di Medicina Sperimentale, Sez. Fisiologia Umana e Funzioni Biologiche Integrate “F. Bottazzi”, Università della Campania “Luigi Vanvitelli”, Via Costantinopoli, 16, 80138 Napoli, Italy; (M.V.); (M.Z.R.)
| | - Francesco Aniello
- Dipartimento di Biologia, Università di Napoli ‘Federico II, Via Cinthia’, 21, 80126 Napoli, Italy;
| | - Sergio Minucci
- Dipartimento di Medicina Sperimentale, Sez. Fisiologia Umana e Funzioni Biologiche Integrate “F. Bottazzi”, Università della Campania “Luigi Vanvitelli”, Via Costantinopoli, 16, 80138 Napoli, Italy; (M.V.); (M.Z.R.)
- Correspondence:
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Abstract
This paper illustrates how labelling claims of a testosterone booster supplement mislead consumers. The labelling claims misappropriate scientific terminology, exaggerate and misrepresent research as evidence for the product's purported efficacy.
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Zachar G, Jakó T, Vincze I, Wagner Z, Tábi T, Bálint E, Mezey S, Szökő É, Csillag A. Age-related and function-dependent regional alterations of free L- and D-aspartate in postembryonic chick brain. Acta Biol Hung 2018; 69:1-15. [PMID: 29575913 DOI: 10.1556/018.68.2018.1.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
D-aspartate (D-Asp) modulates adult neural plasticity and embryonic brain development by promoting cell proliferation, survival and differentiation. Here, developmental changes of the excitatory amino acids (EAAs) L-Glu, L-Asp and D-Asp were determined during the first postembryonic days, a time window for early learning, in selected brain regions of domestic chickens after chiral separation and capillary electrophoresis. Extracellular concentration (ECC) of EAAs was measured in microdialysis samples from freely moving chicks. ECC of D-Asp (but not L-EAAs) decreased during the first week of age, with no considerable regional or learning-related variation. ECC of L-Asp and L-Glu (but not of D-Asp) were elevated in the mSt/Ac in response to a rewarding stimulus, suggesting importance of Asp-Glu co-release in synaptic plasticity of basal ganglia. Potassium-evoked release of D-Asp, with a protracted transient, was also demonstrated. D-Asp constitutes greater percentage of total aspartate in the extracellular space than in whole tissue extracts, thus the bulk of D-Asp detected in tissue appears in the extracellular space. Conversely, only a fraction of tissue L-EAAs can be detected in extracellular space. The lack of changes in tissue D-Asp following avoidance learning indicates a tonic, rather than phasic, mechanism in the neuromodulatory action of this amino acid.
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Affiliation(s)
- Gergely Zachar
- Department of Anatomy, Histology and EmbryologySemmelweis University, Tűzoltó u. 58, H-1094 Budapest, Hungary
| | - Tamás Jakó
- Department of PharmacodynamicsSemmelweis University, Budapest, Hungary
| | - István Vincze
- Department of PharmacodynamicsSemmelweis University, Budapest, Hungary
| | - Zsolt Wagner
- Department of PharmacodynamicsSemmelweis University, Budapest, Hungary
| | - Tamás Tábi
- Department of PharmacodynamicsSemmelweis University, Budapest, Hungary
| | - Eszter Bálint
- Department of Anatomy, Histology and EmbryologySemmelweis University, Tűzoltó u. 58, H-1094 Budapest, Hungary
| | - Szilvia Mezey
- Department of Anatomy, Histology and EmbryologySemmelweis University, Tűzoltó u. 58, H-1094 Budapest, Hungary
| | - Éva Szökő
- Department of PharmacodynamicsSemmelweis University, Budapest, Hungary
| | - András Csillag
- Department of Anatomy, Histology and EmbryologySemmelweis University, Tűzoltó u. 58, H-1094 Budapest, Hungary
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Afraei S, D’Aniello A, Sedaghat R, Ekhtiari P, Azizi G, Tabrizian N, Magliozzi L, Aghazadeh Z, Mirshafiey A. Therapeutic effects of D-aspartate in a mouse model of multiple sclerosis. J Food Drug Anal 2017; 25:699-708. [PMID: 28911655 PMCID: PMC9328824 DOI: 10.1016/j.jfda.2016.10.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 10/21/2016] [Accepted: 10/30/2016] [Indexed: 11/30/2022] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE) is an animal model of multiple sclerosis. EAE is mainly mediated by adaptive and innate immune responses that leads to an inflammatory demyelization and axonal damage. The aim of the present research was to examine the therapeutic efficacy of D-aspartic acid (D-Asp) on a mouse EAE model. EAE induction was performed in female C57BL/6 mice by myelin 40 oligodendrocyte glycoprotein (35-55) in a complete Freund's adjuvant emulsion, and D-Asp was used to test its efficiency in the reduction of EAE. During the course of study, clinical evaluation was assessed, and on Day 21, post-immunization blood samples were taken from the heart of mice for the evaluation of interleukin 6 and other chemical molecules. The mice were sacrificed, and their brain and cerebellum were removed for histological analysis. Our findings indicated that D-Asp had beneficial effects on EAE by attenuation in the severity and delay in the onset of the disease. Histological analysis showed that treatment with D-Asp can reduce inflammation. Moreover, in D-Asp-treated mice, the serum level of interleukin 6 was significantly lower than that in control animals, whereas the total antioxidant capacity was significantly higher. The data indicates that D-Asp possess neuroprotective property to prevent the onset of the multiple sclerosis.
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Affiliation(s)
- Sanaz Afraei
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran,
Iran
| | - Antimo D’Aniello
- Laboratory of Neurobiology, Zoological Station of Naples “Anton Dohrn”, Villa Comunale, Napoli,
Italy
| | - Reza Sedaghat
- Departments of Anatomy and Pathology, Faculty of Medicine, Shahed University, Tehran,
Iran
| | - Parvin Ekhtiari
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran,
Iran
| | - Gholamreza Azizi
- Imam Hassan Mojtaba Hospital, Alborz University of Medical Sciences, Karaj,
Iran
- Research Centre for Immunodeficiencies, Pediatrics Centre of Excellence, Children's Medical Centre, Tehran University of Medical Sciences, Tehran,
Iran
| | - Nakisa Tabrizian
- Department of Cellular and Molecular Biology, Kish International Campus, University of Tehran, Tehran,
Iran
| | - Laura Magliozzi
- Department of Biology, University of Naples, “Federico II” Via Cinthia, MSA Campus, bldg. 7, Naples,
Italy
| | - Zahra Aghazadeh
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran,
Iran
| | - Abbas Mirshafiey
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran,
Iran
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Melville GW, Siegler JC, Marshall PW. Three and six grams supplementation of d-aspartic acid in resistance trained men. J Int Soc Sports Nutr 2015; 12:15. [PMID: 25844073 PMCID: PMC4384294 DOI: 10.1186/s12970-015-0078-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/05/2015] [Indexed: 12/02/2022] Open
Abstract
Background Although abundant research has investigated the hormonal effects of d-aspartic acid in rat models, to date there is limited research on humans. Previous research has demonstrated increased total testosterone levels in sedentary men and no significant changes in hormonal levels in resistance trained men. It was hypothesised that a higher dosage may be required for experienced lifters, thus this study investigated the effects of two different dosages of d-aspartic acid on basal hormonal levels in resistance trained men and explored responsiveness to d-aspartic acid based on initial testosterone levels. Methods Twenty-four males, with a minimum of two years’ experience in resistance training, (age, 24.5 ± 3.2 y; training experience, 3.4 ± 1.4 y; height, 178.5 ± 6.5 cm; weight, 84.7 ± 7.2 kg; bench press 1-RM, 105.3 ± 15.2 kg) were randomised into one of three groups: 6 g.d−1 plain flour (D0); 3 g.d−1 of d-aspartic acid (D3); and 6 g.d−1 of d-aspartic acid (D6). Participants performed a two-week washout period, training four days per week. This continued through the experimental period (14 days), with participants consuming the supplement in the morning. Serum was analysed for levels of testosterone, estradiol, sex hormone binding globulin, albumin and free testosterone was determined by calculation. Results D-aspartic acid supplementation revealed no main effect for group in: estradiol; sex-hormone-binding-globulin; and albumin. Total testosterone was significantly reduced in D6 (P = 0.03). Analysis of free testosterone showed that D6 was significantly reduced as compared to D0 (P = 0.005), but not significantly different to D3. Analysis did not reveal any significant differences between D3 and D0. No significant correlation between initial total testosterone levels and responsiveness to d-aspartic acid was observed (r = 0.10, P = 0.70). Conclusions The present study demonstrated that a daily dose of six grams of d-aspartic acid decreased levels of total testosterone and free testosterone (D6), without any concurrent change in other hormones measured. Three grams of d-aspartic acid had no significant effect on either testosterone markers. It is currently unknown what effect this reduction in testosterone will have on strength and hypertrophy gains.
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Affiliation(s)
- Geoffrey W Melville
- School of Science & Health, University of Western Sydney, Campbelltown Campus, Locked Bag 1797, Penrith, NSW 2751 Australia
| | - Jason C Siegler
- School of Science & Health, University of Western Sydney, Campbelltown Campus, Locked Bag 1797, Penrith, NSW 2751 Australia
| | - Paul Wm Marshall
- School of Science & Health, University of Western Sydney, Campbelltown Campus, Locked Bag 1797, Penrith, NSW 2751 Australia
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