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Fan L, Zhang Z. Therapeutic potential of curcumin on the cognitive decline in animal models of Alzheimer's disease: a systematic review and meta-analysis. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:4499-4509. [PMID: 38265680 DOI: 10.1007/s00210-024-02946-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024]
Abstract
Curcumin, a polyphenol derived from the herb turmeric, has emerged as a prospective potential therapy in the treatment of Alzheimer's disease (AD). However, the efficacy of curcumin treatment in improving cognitive decline caused controversy recently. We aimed to systematically review the effect of curcumin on cognitive impairment in an animal model of AD. We conducted an exhaustive database search of related studies. Two investigators identified studies and independently extracted data. Stratified meta-analyses and meta-regression analyses were carried out to explore the sources of heterogeneity. Publication bias was assessed using funnel plots and Egger's test. Our systematic review included 33 articles. A meta-analysis of 29 publications showed that curcumin exerts significant positive effects on cognitive performance. For acquisition, the global estimated effect of curcumin was - 2.027 (95% CI - 2.435 to - 1.619, p < 0.001); for retention, the global estimated effect of curcumin was 1.606 (95% CI 1.101 to 2.111, p < 0.001). The stratified meta-analysis demonstrated that an increased effect size depended on diverse study characteristics. Additionally, publication bias was detected. We conclude that curcumin may reduce cognitive deficits in experimental AD. Furthermore, we emphasize that additional well-designed and well-reported animal studies are needed to inform further clinical studies.
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Affiliation(s)
- Longmin Fan
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, No. 139 Middle Renmin Road, Changsha, 410011, Hunan, China
| | - Zheyu Zhang
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, No. 139 Middle Renmin Road, Changsha, 410011, Hunan, China.
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Song J, Solmi M, Carvalho AF, Shin JI, Ioannidis JP. Twelve years after the ARRIVE guidelines: Animal research has not yet arrived at high standards. Lab Anim 2024; 58:109-115. [PMID: 37728936 DOI: 10.1177/00236772231181658] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
The reproducibility crisis across animal studies jeopardizes the credibility of the main findings derived from animal research, even though these findings are critical for informing human studies. To clarify and improve transparency among animal studies, the ARRIVE reporting guidelines were first announced in 2010 and upgraded to version 2.0 in 2020. However, compliance with and awareness of those reporting guidelines has remained suboptimal. Journal editors should encourage the authors to adhere to those guidelines. Authors, editors, referees, and reviewers should be aware of the ARRIVE guideline 2.0 when assessing and evaluating the methodology and findings of animal studies. However, we should also question whether reporting guidelines alone can change a research culture and improve the reproducibility of animal investigations. Reported research may not reflect actual research. Large segments of animal research efforts are wasted because of poor design choices and because of non-publication rather than suboptimal reporting. Better training of the scientific workforce, interventions at improving animal research at the design stage, registration practices, and alignment of the reward system with the publication of rigorous animal research may achieve more than reporting guidelines alone.
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Affiliation(s)
- Junmin Song
- Department of Medicine, Jacobi Medical Center, Albert Einstein College of Medicine, Bronx, USA
| | - Marco Solmi
- Department of Psychiatry, University of Ottawa, Ontario, Canada
- Department of Mental Health, The Ottawa Hospital, Ontario, Canada
- Ottawa Hospital Research Institute (OHRI) Clinical Epidemiology Program University of Ottawa, Ontario, Canada
- School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ontario, Canada
- Department of Child and Adolescent Psychiatry, Charité Universitätsmedizin, Berlin, Germany
| | - Andre F Carvalho
- IMPACT (Innovation in Mental and Physical Health and Clinical Treatment) Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Australia
| | - Jae Il Shin
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Center for Medical Education Training and Professional Development in Yonsei-Donggok Medical Education Institute, Seoul, Republic of Korea
- Severance Underwood Meta-research Center, Institute of Convergence Science, Yonsei University, Seoul, South Korea
| | - John Pa Ioannidis
- Departments of Medicine, Epidemiology and Population Health, Biomedical Data Science, and Statistics, and Meta-Research Innovation Center at Stanford (METRICS), Stanford University, USA
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Abkhezr H, Mohaddes G, Nikniaz Z, Abbasalizad Farhangi M, Heydari H, Nikniaz L. The effect of Extremely Low Frequency Electromagnetic Field on spatial memory of mice and rats: A systematic review. LEARNING AND MOTIVATION 2023. [DOI: 10.1016/j.lmot.2023.101873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Aljohani FS, Rezki N, Aouad MR, Hagar M, Bakr BA, Shaaban MM, Elwakil BH. Novel 1,2,3-Triazole-sulphadiazine-ZnO Hybrids as Potent Antimicrobial Agents against Carbapenem Resistant Bacteria. Antibiotics (Basel) 2022; 11:antibiotics11070916. [PMID: 35884170 PMCID: PMC9312158 DOI: 10.3390/antibiotics11070916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 02/04/2023] Open
Abstract
Bacterial pneumonia is considered one of the most virulent diseases with high morbidity and mortality rates, especially in hospitalized patients. Moreover, bacterial resistance increased over the last decades which limited the therapy options to carbapenem antibiotics. Hence, the metallo-β-lactamase-producing bacteria were deliberated as the most deadly and ferocious infectious agents. Sulphadiazine-ZnO hybrids biological activity was explored in vitro and in vivo against metallo-β-lactamases (MBLs) producing Klebsiella pneumoniae. Docking studies against NDM-1 and IMP-1 MBLs revealed the superior activity of the 3a compound in inhibiting both MBLs enzymes in a valid reliable docking approach. The MBLs inhibition enzyme assay revealed the remarkable sulphadiazine-ZnO hybrids inhibitory effect against NDM-1 and IMP-1 MBLs. The tested compounds inhibited the enzymes both competitively and noncompetitively. Compound 3b-ZnO showed the highest antibacterial activity against the tested metallo-β-lactamase producers with an inhibition zone (IZ) diameter reaching 43 mm and a minimum inhibitory concentration (MIC) reaching 2 µg/mL. Sulphadiazine-ZnO hybrids were tested for their in vitro cytotoxicity in a normal lung cell line (BEAS-2Bs cell line). Higher cell viability was observed with 3b-ZnO. Biodistribution of the sulphadiazine-ZnO hybrids in the lungs of uninfected rats revealed that both [124I]3a-ZnO and [124I]3b-ZnO hybrids remained detectable within the rats’ lungs after 24 h of endotracheal aerosolization. Moreover, the residence duration in the lungs of [124I]3b-ZnO (t1/2 4.91 h) was 85.3%. The histopathological investigations confirmed that compound 3b-ZnO has significant activity in controlling bacterial pneumonia infection in rats.
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Affiliation(s)
- Faizah S. Aljohani
- Department of Chemistry, College of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia; (N.R.); (M.R.A.)
- Correspondence: (F.S.A.); (B.H.E.)
| | - Nadjet Rezki
- Department of Chemistry, College of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia; (N.R.); (M.R.A.)
| | - Mohamed R. Aouad
- Department of Chemistry, College of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia; (N.R.); (M.R.A.)
| | - Mohamed Hagar
- Department of Chemistry, Faculty of Science, Alexandria University, Alexandria 21321, Egypt;
| | - Basant A. Bakr
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21321, Egypt;
| | - Marwa M. Shaaban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt;
| | - Bassma H. Elwakil
- Department of Medical Laboratory Technology, Faculty of Applied Health Sciences Technology, Pharos University in Alexandria, Alexandria 21311, Egypt
- Correspondence: (F.S.A.); (B.H.E.)
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Aerosol-Mediated Non-Viral Lung Gene Therapy: The Potential of Aminoglycoside-Based Cationic Liposomes. Pharmaceutics 2021; 14:pharmaceutics14010025. [PMID: 35056921 PMCID: PMC8778791 DOI: 10.3390/pharmaceutics14010025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/29/2021] [Accepted: 12/14/2021] [Indexed: 11/17/2022] Open
Abstract
Aerosol lung gene therapy using non-viral delivery systems represents a credible therapeutic strategy for chronic respiratory diseases, such as cystic fibrosis (CF). Progress in CF clinical setting using the lipidic formulation GL67A has demonstrated the relevance of such a strategy while emphasizing the need for more potent gene transfer agents. In recent years, many novel non-viral gene delivery vehicles were proposed as potential alternatives to GL67 cationic lipid. However, they were usually evaluated using procedures difficult or even impossible to implement in clinical practice. In this study, a clinically-relevant administration protocol via aerosol in murine lungs was used to conduct a comparative study with GL67A. Diverse lipidic compounds were used to prepare a series of formulations inspired by the composition of GL67A. While some of these formulations were ineffective at transfecting murine lungs, others demonstrated modest-to-very-efficient activities and a series of structure-activity relationships were unveiled. Lipidic aminoglycoside derivative-based formulations were found to be at least as efficient as GL67A following aerosol delivery of a luciferase-encoding plasmid DNA. A single aerosol treatment with one such formulation was found to mediate long-term lung transgene expression, exceeding half the animal's lifetime. This study clearly supports the potential of aminoglycoside-based cationic lipids as potent GL67-alternative scaffolds for further enhanced aerosol non-viral lung gene therapy for diseases such as CF.
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Lecour S, Andreadou I, Bøtker HE, Davidson SM, Heusch G, Ruiz-Meana M, Schulz R, Zuurbier CJ, Ferdinandy P, Hausenloy DJ. IMproving Preclinical Assessment of Cardioprotective Therapies (IMPACT) criteria: guidelines of the EU-CARDIOPROTECTION COST Action. Basic Res Cardiol 2021; 116:52. [PMID: 34515837 PMCID: PMC8437922 DOI: 10.1007/s00395-021-00893-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/05/2021] [Accepted: 09/06/2021] [Indexed: 12/28/2022]
Abstract
Acute myocardial infarction (AMI) and the heart failure (HF) which may follow are among the leading causes of death and disability worldwide. As such, new therapeutic interventions are still needed to protect the heart against acute ischemia/reperfusion injury to reduce myocardial infarct size and prevent the onset of HF in patients presenting with AMI. However, the clinical translation of cardioprotective interventions that have proven to be beneficial in preclinical animal studies, has been challenging. One likely major reason for this failure to translate cardioprotection into patient benefit is the lack of rigorous and systematic in vivo preclinical assessment of the efficacy of promising cardioprotective interventions prior to their clinical evaluation. To address this, we propose an in vivo set of step-by-step criteria for IMproving Preclinical Assessment of Cardioprotective Therapies ('IMPACT'), for investigators to consider adopting before embarking on clinical studies, the aim of which is to improve the likelihood of translating novel cardioprotective interventions into the clinical setting for patient benefit.
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Affiliation(s)
- Sandrine Lecour
- Department of Medicine, Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa
| | - Ioanna Andreadou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Hans Erik Bøtker
- Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
| | - Sean M Davidson
- The Hatter Cardiovascular Institute, University College London, London, UK
| | - Gerd Heusch
- Institute for Pathophysiology, West German Heart and Vascular Center, University of Duisburg-Essen, Essen, Germany
| | - Marisol Ruiz-Meana
- Cardiovascular Diseases Research Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Rainer Schulz
- Institute for Physiology, Justus-Liebig University Giessen, Giessen, Germany
| | - Coert J Zuurbier
- Laboratory of Experimental Intensive Care Anesthesiology, Department Anesthesiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
- Pharmahungary Group, Szeged, Hungary
| | - Derek J Hausenloy
- The Hatter Cardiovascular Institute, University College London, London, UK.
- Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, 8 College Road, Singapore, 169857, Singapore.
- National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore.
- Yong Loo Lin School of Medicine, National University Singapore, Singapore, Singapore.
- Cardiovascular Research Center, College of Medical and Health Sciences, Asia University, Taichung, Taiwan.
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Silva GA, Moreira ALG, Silva PHF, Salvador SL, Casarin RCV, Vicente RM, Ferreira GC, Dos Santos JET, Furlaneto FAC, Messora MR. The use of probiotics can reduce the severity of experimental periodontitis in rats with metabolic syndrome: an immunoenzymatic and microtomographic study. J Periodontol 2021; 93:e1-e12. [PMID: 34374081 DOI: 10.1002/jper.21-0285] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/08/2021] [Accepted: 07/29/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND This study evaluated the effects of Bifidobacterium animalis subsp. lactis HN019 (B. lactis HN019) in the development of periodontitis (PE), associated or not with metabolic syndrome, (MS) in rats. METHODS 96 rats were grouped according to a food protocol: high-fat diet for induction of MS or standard diet for the control groups (C). They were subdivided into groups with (+) and without (-) PE, receiving (*) or not (**) probiotic (PROB): C -**, CP-*, PE+**, PEP+*, MS-**, MSP-*, MSPE+** and MSPEP+*. PROB administration started on the 8th week of the study and PE was induced on the 14th week by placing ligature on the animals' lower first molars. Euthanasia occurred in the 16th week. Biomolecular analyzes, immunoenzymatic assays, and microtomographic analyses were performed. The data obtained were analyzed statistically (p <0.05). RESULTS The PEP and MSPEP groups showed lower levels of alveolar bone loss when compared to the PE and MSPE groups, respectively (p <0.05). The immunoenzymatic analysis showed higher levels of interleukin (IL)-1β and a higher receptor activator of NF-kappaB ligand (RANKL)/ osteoprotegerin (OPG) ratio in the MSPE group when compared to the MSPEP group (p <0.05). The PEP group showed lower levels of tumor necrosis factor (TNF)-α and IL-6 when compared to the PE group. The use of PROB attenuated dyslipidemia parameters in animals with MS, with or without PE. CONCLUSION B. lactis HN019 reduced more significantly the severity of PE in rats with MS, modulating both systemic metabolic and immunoinflammatory parameters in periodontal tissues. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Giselle A Silva
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - André L G Moreira
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - Pedro H F Silva
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - Sérgio L Salvador
- Department of Clinical Analyses, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - Renato C V Casarin
- Department of Prosthodontics and Periodontics, School of Dentistry, Campinas State University, Piracicaba, São Paulo, Brazil
| | - Raphael M Vicente
- Department of Orthopedics and Anesthesiology, Ribeirao Preto Medical School, University of Sao Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - Graziele C Ferreira
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - José E T Dos Santos
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - Flávia A C Furlaneto
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
| | - Michel R Messora
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, São Paulo, Brazil
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Ruparell A, Wallis C, Haydock R, Cawthrow A, Holcombe LJ. Comparison of subgingival and gingival margin plaque microbiota from dogs with healthy gingiva and early periodontal disease. Res Vet Sci 2021; 136:396-407. [PMID: 33799170 DOI: 10.1016/j.rvsc.2021.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 01/10/2021] [Accepted: 01/21/2021] [Indexed: 12/13/2022]
Abstract
The purpose of the investigation was to determine whether canine gingival margin (GM) plaque is a reliable surrogate for subgingival (SG) plaque from a microbial community (microbiota) perspective. SG and GM plaque samples were collected from 381 dogs visiting pet hospitals in the USA, China and Thailand. Dogs with clinically healthy gingivae through to early periodontitis were included in the study. The samples were subject to next generation Illumina sequence analysis to allow microbiota comparisons to be made between the two plaque sources. Overall, the SG and GM samples indicated commonality via the majority community that were shared between them; health associations led to the identification of some significant taxa-specific differences. GM microbiota exhibited lower variability and diversity and were shown to reflect a sub-population of those associated with SG plaque. Both plaque niches, however, demonstrated similar changes in microbial signatures with health and early periodontal disease and did not indicate divergent trends. The key, most abundant microbiota of GM plaque strongly reflect those observed with SG plaque across health and early periodontitis. Microbiota in plaque from above the gum line may therefore be employed as a biomarker of oral health. This opens up the potential to use plaque, sampled from conscious dogs, to define oral health status and improve the diagnosis, treatments and interventions for periodontal disease.
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Affiliation(s)
- Avika Ruparell
- WALTHAM Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, United Kingdom.
| | - Corrin Wallis
- WALTHAM Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, United Kingdom
| | - Richard Haydock
- WALTHAM Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, United Kingdom
| | - Amy Cawthrow
- WALTHAM Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, United Kingdom
| | - Lucy J Holcombe
- WALTHAM Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, United Kingdom
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Jansen T, Hoegberg LCG, Eriksen T, Dalhoff KP, Belhage B, Johansen SS. Amitriptyline accumulation in tissues after coated activated charcoal hemoperfusion-a randomized controlled animal poisoning model. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2019; 392:1285-1292. [PMID: 31187186 DOI: 10.1007/s00210-019-01669-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 05/16/2019] [Indexed: 11/28/2022]
Abstract
Amitriptyline poisoning (AT) is a common poisoning, and AT possess the ability to promote life-threatening complications by its main action on the central nervous and cardiovascular systems. The pharmacokinetic properties might be altered at toxic levels compared to therapeutic levels. The effect of coated activated charcoal hemoperfusion (CAC-HP) on the accumulation of AT and its active metabolite nortriptyline (NT) in various tissues was studied in a non-blinded randomized controlled animal trial including 14 female Danish Land Race piglets. All piglets were poisoned with amitriptyline 7.5 mg/kg infused in 20 min, followed by orally instilled activated charcoal at 30 min after infusion cessation. The intervention group received 4 h of CAC-HP followed by a 1-h redistribution phase. At study cessation, the piglets were euthanized, and within 20 min, vitreous fluid, liver tissue, ventricle and septum of the heart, diaphragm and lipoic and brain tissues were collected. AT and NT tissue concentrations were quantified by UHPLC-MS/MS. A 4-h treatment with CAC-HP did not affect the tissue accumulation of AT in the selected organs when tested by Mann-Whitney U test (p values between 0.44 and 0.73). For NT concentrations, p values were between 0.13 and 1.00. Although not significant, an interesting finding was that data showed a tendency of increased tissue accumulation of AT and NT in the CAC-HP group compared with the control group. Coated activated charcoal hemoperfusion does not significantly alter the tissue concentration of AT and NT in the AT-poisoned piglet.
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Affiliation(s)
- Tejs Jansen
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, Building 7A, NV, 2400, Copenhagen, Denmark.
| | - Lotte C G Hoegberg
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, Building 7A, NV, 2400, Copenhagen, Denmark
| | - Thomas Eriksen
- Department of Veterinary Clinical Sciences, University Hospital for Companion Animals, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlægevej 16, 1870, Frederiksberg, Denmark
| | - Kim P Dalhoff
- Department of Clinical Pharmacology, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, Building 20C, NV, 2400, Copenhagen, Denmark
| | - Bo Belhage
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, Building 7A, NV, 2400, Copenhagen, Denmark
| | - Sys S Johansen
- Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Frederik V's Vej 11, 2100, Copenhagen, Denmark
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Pereira AF, Pereira LMS, Silva CMP, Freitas Alves BW, Barbosa JS, Pinto FMM, Pereira AC, Silva KO, Pontes RB, Alencar NMN, Lima-Júnior RCP, Vale ML. Metformin reduces c-Fos and ATF3 expression in the dorsal root ganglia and protects against oxaliplatin-induced peripheral sensory neuropathy in mice. Neurosci Lett 2019; 709:134378. [PMID: 31325582 DOI: 10.1016/j.neulet.2019.134378] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/09/2019] [Accepted: 07/15/2019] [Indexed: 12/11/2022]
Abstract
Oxaliplatin is a third-generation platinum drug commonly used as the first line treatment of metastatic colorectal cancer. Oxaliplatin-based anticancer regimens course with dose-limiting neurotoxicity. The pharmacological strategies used to manage such side effect are not totally effective. Metformin is an anti-diabetic drug that is described to negatively modulate painful diabetic neuropathy. Then, this study aimed to assess the effect of metformin in the oxaliplatin-induced peripheral sensory neuropathy in mice. For that purpose, Swiss male mice were injected with oxaliplatin (1, 2 or 4 mg/kg, i.v., twice a week with a total of nine injections) alone or in combination with daily administration of metformin (250 mg/kg, p.o.). Thermal and mechanical nociceptive tests were performed once a week for five weeks. Then, the animals were euthanized on day 35 post-first injection of oxaliplatin and the dorsal root ganglia were harvested for the assessment of c-Fos and ATF3 expressions. Oxaliplatin caused a nociceptive response accompanied by the increased expression of c-Fos and ATF3 in the dorsal root ganglia and spinal cord. In addition, the oxaliplatin-associated nociception was significantly attenuated by metformin (P < 0.05), which also reduced the expression of c-Fos and ATF3 (P < 0.05). Therefore, metformin protected from the peripheral sensory neuropathy induced by oxaliplatin, which was confirmed by the reduction of c-Fos and ATF3 expression, two known neuronal activation and damage markers, respectively.
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Affiliation(s)
- Anamaria Falcão Pereira
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lus Mário Silva Pereira
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | | | - Bruno Wesley Freitas Alves
- Department of Morphology, Morpho-functional Sciences Post Graduation Program, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Jéssica Sales Barbosa
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | | | - Ana Carolina Pereira
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Karla Oliveira Silva
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Renata Bessa Pontes
- Department of Physical Therapy, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Nylane Maria Nunes Alencar
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Roberto César Pereira Lima-Júnior
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Mariana Lima Vale
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil; Department of Morphology, Morpho-functional Sciences Post Graduation Program, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceará, Fortaleza, CE, Brazil.
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SN-38, the active metabolite of irinotecan, inhibits the acute inflammatory response by targeting toll-like receptor 4. Cancer Chemother Pharmacol 2019; 84:287-298. [DOI: 10.1007/s00280-019-03844-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 04/16/2019] [Indexed: 12/27/2022]
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12
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Tihanyi DK, Szijarto A, Fülöp A, Denecke B, Lurje G, Neumann UP, Czigany Z, Tolba R. Systematic Review on Characteristics and Reporting Quality of Animal Studies in Liver Regeneration Triggered by Portal Vein Occlusion and Associating Liver Partition and Portal Vein Ligation for Staged Hepatectomy: Adherence to the ARRIVE Guidelines. J Surg Res 2019; 235:578-590. [PMID: 30691845 DOI: 10.1016/j.jss.2018.10.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 09/09/2018] [Accepted: 10/23/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND Portal vein occlusion and associating liver partition and portal vein ligation for staged hepatectomy techniques are in the spotlight of oncological liver surgery. Research involving animal models is indispensable to study the mechanisms of liver regeneration. Inaccurate reporting acts as a significant barrier during the correct interpretation of preclinical findings. Hence, we performed a systematic review to evaluate the status quo of the reporting standards and to assess the potential factors influencing reporting in animal studies, which are focusing on portal vein occlusion and/or associating liver partition and portal vein ligation for staged hepatectomy techniques. MATERIALS AND METHODS A systematic review was performed in the PubMed and Ovid MEDLINE databases. Baseline study characteristics were recorded, and quality assessment was performed using the Animals in Research: Reporting in vivo Experiments (ARRIVE) checklist. RESULTS A total of 107 research articles were included for the comprehensive assessment. In the subgroup analysis, newer reports and studies from the post-ARRIVE era, and reports from Europe were all associated with significantly higher ARRIVE scores (P < 0.05). Univariable regression analysis confirmed these factors as predictors of higher reporting quality. However, in the multivariable analysis, only publishing in the post-ARRIVE era has been found as single independent predictor of higher reporting standards (P = 0.028 post-ARRIVE total score 75th percentile; P = 0.000 post-ARRIVE total score median). CONCLUSIONS Although an improving trend has been observed in reporting quality over the past years, this effect was clearly insufficient. Our results emphasize the need for further measures to improve the methodical quality at all levels of planning, execution, and reporting of preclinical studies in liver regeneration research.
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Affiliation(s)
- Dora Krisztina Tihanyi
- Institute for Laboratory Animal Science and Experimental Surgery, University Hospital RWTH Aachen, Aachen, Germany; HPB Research Center Hungary, 1st Department of Surgery, Semmelweis University, Budapest, Hungary; Doctoral School of Clinical Medicine, Semmelweis University, Budapest, Hungary
| | - Attila Szijarto
- HPB Research Center Hungary, 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - Andras Fülöp
- HPB Research Center Hungary, 1st Department of Surgery, Semmelweis University, Budapest, Hungary
| | - Bernd Denecke
- Genomics Facility, Interdisciplinary Center for Clinical Research, University Hospital RWTH Aachen, Aachen, Germany
| | - Georg Lurje
- Department of Surgery and Transplantation, University Hospital RWTH Aachen, Aachen, Germany
| | - Ulf Peter Neumann
- Department of Surgery and Transplantation, University Hospital RWTH Aachen, Aachen, Germany; Department of Surgery, Maastricht University Medical Centre (MUMC), Maastricht, The Netherlands
| | - Zoltan Czigany
- Department of Surgery and Transplantation, University Hospital RWTH Aachen, Aachen, Germany.
| | - Rene Tolba
- Institute for Laboratory Animal Science and Experimental Surgery, University Hospital RWTH Aachen, Aachen, Germany
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Bøtker HE, Hausenloy D, Andreadou I, Antonucci S, Boengler K, Davidson SM, Deshwal S, Devaux Y, Di Lisa F, Di Sante M, Efentakis P, Femminò S, García-Dorado D, Giricz Z, Ibanez B, Iliodromitis E, Kaludercic N, Kleinbongard P, Neuhäuser M, Ovize M, Pagliaro P, Rahbek-Schmidt M, Ruiz-Meana M, Schlüter KD, Schulz R, Skyschally A, Wilder C, Yellon DM, Ferdinandy P, Heusch G. Practical guidelines for rigor and reproducibility in preclinical and clinical studies on cardioprotection. Basic Res Cardiol 2018; 113:39. [PMID: 30120595 PMCID: PMC6105267 DOI: 10.1007/s00395-018-0696-8] [Citation(s) in RCA: 304] [Impact Index Per Article: 50.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/18/2018] [Accepted: 08/03/2018] [Indexed: 02/07/2023]
Affiliation(s)
- Hans Erik Bøtker
- Department of Cardiology, Aarhus University Hospital, Palle-Juul Jensens Boulevard 99, 8200, Aarhus N, Denmark.
| | - Derek Hausenloy
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX, UK
- The National Institute of Health Research, University College London Hospitals Biomedial Research Centre, Research and Development, London, UK
- National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore
- Yon Loo Lin School of Medicine, National University Singapore, Singapore, Singapore
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, 8 College Road, Singapore, 169857, Singapore
| | - Ioanna Andreadou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Salvatore Antonucci
- Department of Biomedical Sciences, CNR Institute of Neuroscience, University of Padova, Via Ugo Bassi 58/B, 35121, Padua, Italy
| | - Kerstin Boengler
- Institute for Physiology, Justus-Liebig University Giessen, Giessen, Germany
| | - Sean M Davidson
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX, UK
| | - Soni Deshwal
- Department of Biomedical Sciences, CNR Institute of Neuroscience, University of Padova, Via Ugo Bassi 58/B, 35121, Padua, Italy
| | - Yvan Devaux
- Cardiovascular Research Unit, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Fabio Di Lisa
- Department of Biomedical Sciences, CNR Institute of Neuroscience, University of Padova, Via Ugo Bassi 58/B, 35121, Padua, Italy
| | - Moises Di Sante
- Department of Biomedical Sciences, CNR Institute of Neuroscience, University of Padova, Via Ugo Bassi 58/B, 35121, Padua, Italy
| | - Panagiotis Efentakis
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Saveria Femminò
- Department of Clinical and Biological Sciences, University of Torino, Turin, Italy
| | - David García-Dorado
- Experimental Cardiology, Vall d'Hebron Institut de Recerca (VHIR), Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, 08035, Barcelona, Spain
| | - Zoltán Giricz
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
- Pharmahungary Group, Szeged, Hungary
| | - Borja Ibanez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), IIS-Fundación Jiménez Díaz, CIBERCV, Madrid, Spain
| | - Efstathios Iliodromitis
- Second Department of Cardiology, Faculty of Medicine, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Nina Kaludercic
- Department of Biomedical Sciences, CNR Institute of Neuroscience, University of Padova, Via Ugo Bassi 58/B, 35121, Padua, Italy
| | - Petra Kleinbongard
- Institute for Pathophysiology, West German Heart and Vascular Center, University of Essen Medical School, Essen, Germany
| | - Markus Neuhäuser
- Department of Mathematics and Technology, Koblenz University of Applied Science, Remagen, Germany
- Institute for Medical Informatics, Biometry, and Epidemiology, University Hospital Essen, Essen, Germany
| | - Michel Ovize
- Explorations Fonctionnelles Cardiovasculaires, Hôpital Louis Pradel, Lyon, France
- UMR, 1060 (CarMeN), Université Claude Bernard, Lyon1, Villeurbanne, France
| | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Torino, Turin, Italy
| | - Michael Rahbek-Schmidt
- Department of Cardiology, Aarhus University Hospital, Palle-Juul Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Marisol Ruiz-Meana
- Experimental Cardiology, Vall d'Hebron Institut de Recerca (VHIR), Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, 08035, Barcelona, Spain
| | | | - Rainer Schulz
- Institute for Physiology, Justus-Liebig University Giessen, Giessen, Germany
| | - Andreas Skyschally
- Institute for Pathophysiology, West German Heart and Vascular Center, University of Essen Medical School, Essen, Germany
| | - Catherine Wilder
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX, UK
| | - Derek M Yellon
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX, UK
| | - Peter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
- Pharmahungary Group, Szeged, Hungary
| | - Gerd Heusch
- Institute for Pathophysiology, West German Heart and Vascular Center, University of Essen Medical School, Essen, Germany.
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Jansen T, Hoegberg LCG, Eriksen T, Haarmark C, Dalhoff K, Belhage B. Advanced Electrocardiogram Analysis in the Amitriptyline-poisoned Pig Treated with Activated Charcoal Haemoperfusion. Basic Clin Pharmacol Toxicol 2017; 122:442-447. [DOI: 10.1111/bcpt.12931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 10/27/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Tejs Jansen
- Department of Anaesthesiology; Copenhagen University Hospital Bispebjerg; Copenhagen Denmark
| | - Lotte C. G. Hoegberg
- Department of Anaesthesiology; Copenhagen University Hospital Bispebjerg; Copenhagen Denmark
| | - Thomas Eriksen
- Department of Veterinary Clinical Sciences; Faculty of Health and Medical Sciences; University Hospital for Companion Animals; University of Copenhagen; Copenhagen Denmark
| | - Christian Haarmark
- Department of Clinical Physiology and Nuclear Medicine; Copenhagen University Hospital Herlev and Gentofte; Denmark
| | - Kim Dalhoff
- Department of Clinical Pharmacology; Copenhagen University Hospital Bispebjerg; Copenhagen Denmark
| | - Bo Belhage
- Department of Anaesthesiology; Copenhagen University Hospital Bispebjerg; Copenhagen Denmark
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Translational Stroke Research Guideline Projections: The 20/20 Standards. Transl Stroke Res 2017; 9:9-12. [DOI: 10.1007/s12975-017-0534-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 03/30/2017] [Indexed: 01/04/2023]
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Data Standardization and Quality Management. Transl Stroke Res 2017; 9:4-8. [PMID: 28283966 DOI: 10.1007/s12975-017-0531-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/26/2017] [Accepted: 03/01/2017] [Indexed: 10/20/2022]
Abstract
Important questions regarding the conduct of scientific research and data transparency have been raised in various scientific forums over the last 10 years. It is becoming clear, that in spite of published RIGOR guidelines, that improvement in the transparency of scientific research is required to focus on the discovery and drug development process so that a treatment can be provided to stroke patients. We have the unique privilege of conducting research using animal models of a disease so that we can address the development of a new therapy, and we should do this with great care and vigilance. This document identifies valuable resources for researchers to become Good Laboratory Practices compliant and increase and improve data transparency and provides guidelines for accurate data management to continue to propel the translational stroke research field forward while recognizing that there is a shortage of research funds worldwide. While data audits are being considered worldwide by funding agencies and they are used extensively by industry, they are still quite controversial for basic researchers. Due to the special exploratory nature of basic and translational science research, the current challenging funding environment, and independent and individualized laboratory activities, it is debatable if current individualized non-standardized data management and monitoring represents the best approach. Thus, herein, we propose steps to prepare research study data in an acceptable form for archival purposes so that standards for translational research data can be comparable to those that are accepted and adhered to by the clinical community. If all translational research laboratories follow and institute the guidelines while conducting translational research, data from all sources may be more comparable and reliable.
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Yang B, Wang Z, Sheng C, Wang Y, Zhou J, Xiong XG, Peng W. Evidence-based review of oral traditional Chinese medicine compound recipe administration for treating weight drop-induced experimental traumatic brain injury. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:95. [PMID: 26956181 PMCID: PMC4784383 DOI: 10.1186/s12906-016-1076-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 03/03/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND Recently, a number of studies conducted and published in China have suggested that traditional Chinese medicine compound recipe (TCMCR) may be beneficial in the treatment of experimental traumatic brain injury (TBI). In this study, we conducted a systematic review and meta-analysis of the efficacy of TCMCR in TBI model with weight drop method to provide robust evidence on the effects of TCMCR and to determine whether TCMCR can be recommended for routine treatment or considered as a standard treatment for TBI. METHODS We identified eligible studies by searching five electronic databases on April 1, 2014, and pooled the data using the random-effects model. Results were reported in terms of standardized mean difference (SMD). We also calculated statistical heterogeneity, evaluated the studies' methodological quality and investigated the presence of publication bias. RESULTS Totally, 187 relevant publications were searched from databases, 25 of which met our inclusion criteria. The overall methodological quality of the most studies was poor, and there was evidence of statistical heterogeneity among studies along with small-study effects. Meta-analysis showed statistically significant effects indicating that TCMCR has a beneficial effect on TBI. CONCLUSIONS Despite the limitations, we concluded that TCMCR may reduce brain water content, improve BBB permeability, and decrease TNF-α/NO expression after experimental TBI in terms of overall efficacy. However, our review also indicates that more well-designed and well-reported animal studies are needed.
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Hao Y, Wu C, Zhao Z, Zhao Y, Xu J, Qiu Y, Jiang J, Yu T, Ma C, Zhou B. Development of a novel starch with a three-dimensional ordered macroporous structure for improving the dissolution rate of felodipine. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:1131-7. [DOI: 10.1016/j.msec.2015.09.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/12/2015] [Accepted: 09/02/2015] [Indexed: 11/25/2022]
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Czigány Z, Iwasaki J, Yagi S, Nagai K, Szijártó A, Uemoto S, Tolba RH. Improving Research Practice in Rat Orthotopic and Partial Orthotopic Liver Transplantation: A Review, Recommendation, and Publication Guide. Eur Surg Res 2015; 55:119-38. [DOI: 10.1159/000437095] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Accepted: 06/19/2015] [Indexed: 11/19/2022]
Abstract
Background: Due to a worldwide shortage of donor organs for liver transplantation, alternative approaches, such as split and living donor liver transplantations, were introduced to increase the donor pool and reduce mortality on liver transplant waiting lists. Numerous details concerning the mechanisms and pathophysiology of liver regeneration, small-for-size syndrome, rejection, and tolerance in partial liver transplantation facilitated the development of various animal models. The high number of preclinical animal studies contributed enormously to our understanding of many clinical aspects of living donor and partial liver transplantations. Summary: Microsurgical rat models of partial orthotopic liver transplantation are well established and widely used. Nevertheless, several issues regarding this procedure are controversial, not clarified, or not yet properly standardized (graft rearterialization, size reduction techniques, etc.). The major aim of this literature review is to give the reader a current overview of rat orthotopic liver transplantation models with a special focus on partial liver transplantation. The aspects of model evolution, microsurgical training, and different technical problems are analyzed and discussed in detail. Our further aim in this paper is to elaborate a detailed publication guide in order to improve the quality of reporting in the field of rat liver transplantation according to the ARRIVE guidelines and the 3R principle. Key Messages: Partial orthotopic liver transplantation in rats is an indispensable, reliable, and cost-efficient model for transplantation research. A certain consensus on different technical issues and a significant improvement in scientific reporting are essential to improve transparency and comparability in this field as well as to foster refinement.
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Effects of stem cell transplantation on cognitive decline in animal models of Alzheimer's disease: A systematic review and meta-analysis. Sci Rep 2015; 5:12134. [PMID: 26159750 PMCID: PMC4498325 DOI: 10.1038/srep12134] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 06/17/2015] [Indexed: 12/16/2022] Open
Abstract
Alzheimer’s disease (AD), an irreversible progressive neurodegenerative disease, causes characteristic cognitive impairment, and no curative treatments are currently available. Stem cell transplantation offers a powerful tool for the treatment of AD. We conducted a systematic review and meta-analysis of data from controlled studies to study the impact of stem cell biology and experimental design on learning and memory function following stem cell transplantation in animal models of AD. A total of 58 eligible controlled studies were included by searching PubMed, EMBASE, and Web of Science up to April 13, 2015. Meta-analysis showed that stem cell transplantation could promote both learning and memory recovery. Stratified meta-analysis was used to explore the influence of the potential factors on the estimated effect size, and meta-regression analyses were undertaken to explore the sources of heterogeneity for learning and memory function. Publication bias was assessed using funnel plots and Egger’s test. The present review reinforces the evidence supporting stem cell transplantation in experimental AD. However, it highlights areas that require well-designed and well-reported animal studies.
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Experimental design and reporting standards for improving the internal validity of pre-clinical studies in the field of pain: Consensus of the IMI-Europain consortium. Scand J Pain 2015; 7:58-70. [DOI: 10.1016/j.sjpain.2015.01.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 01/19/2015] [Indexed: 01/31/2023]
Abstract
Abstract
Background and aims
Pain is a subjective experience, and as such, pre-clinical models of human pain are highly simplified representations of clinical features. These models are nevertheless critical for the delivery of novel analgesics for human pain, providing pharmacodynamic measurements of activity and, where possible, on-target confirmation of that activity. It has, however, been suggested that at least 50% of all pre-clinical data, independent of discipline, cannot be replicated. Additionally, the paucity of “negative” data in the public domain indicates a publication bias, and significantly impacts the interpretation of failed attempts to replicate published findings. Evidence suggests that systematic biases in experimental design and conduct and insufficiencies in reporting play significant roles in poor reproducibility across pre-clinical studies. It then follows that recommendations on how to improve these factors are warranted.
Methods
Members of Europain, a pain research consortium funded by the European Innovative Medicines Initiative (IMI), developed internal recommendations on how to improve the reliability of pre-clinical studies between laboratories. This guidance is focused on two aspects: experimental design and conduct, and study reporting.
Results
Minimum requirements for experimental design and conduct were agreed upon across the dimensions of animal characteristics, sample size calculations, inclusion and exclusion criteria, random allocation to groups, allocation concealment, and blinded assessment of outcome. Building upon the Animals in Research: Reportingin vivo Experiments (ARRIVE) guidelines, reporting standards were developed for pre-clinical studies of pain. These include specific recommendations for reporting on ethical issues, experimental design and conduct, and data analysis and interpretation. Key principles such as sample size calculation, a priori definition of a primary efficacy measure, randomization, allocation concealments, and blinding are discussed. In addition, considerations of how stress and normal rodent physiology impact outcome of analgesic drug studies are considered. Flow diagrams are standard requirements in all clinical trials, and flow diagrams for preclinical trials, which describe number of animals included/excluded, and reasons for exclusion are proposed. Creation of a trial registry for pre-clinical studies focused on drug development in order to estimate possible publication bias is discussed.
Conclusions
More systematic research is needed to analyze how inadequate internal validity and/or experimental bias may impact reproducibility across pre-clinical pain studies. Addressing the potential threats to internal validity and the sources of experimental biases, as well as increasing the transparency in reporting, are likely to improve preclinical research broadly by ensuring relevant progress is made in advancing the knowledge of chronic pain pathophysiology and identifying novel analgesics.
Implications
We are now disseminating these Europain processes for discussion in the wider pain research community. Any benefit from these guidelines will be dependent on acceptance and disciplined implementation across pre-clinical laboratories, funding agencies and journal editors, but it is anticipated that these guidelines will be a first step towards improving scientific rigor across the field of pre-clinical pain research.
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Peng W, Sun J, Sheng C, Wang Z, Wang Y, Zhang C, Fan R. Systematic review and meta-analysis of efficacy of mesenchymal stem cells on locomotor recovery in animal models of traumatic brain injury. Stem Cell Res Ther 2015; 6:47. [PMID: 25881229 PMCID: PMC4425919 DOI: 10.1186/s13287-015-0034-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 02/13/2015] [Accepted: 03/03/2015] [Indexed: 12/13/2022] Open
Abstract
Introduction The therapeutic potential of mesenchymal stem cells (MSCs) for traumatic brain injury (TBI) is attractive. Conducting systematic review and meta-analyses based on data from animal studies can be used to inform clinical trial design. To conduct a systematic review and meta-analysis to (i) systematically review the literatures describing the effect of MSCs therapy in animal models of TBI, (ii) determine the estimated effect size of functional locomotor recovery after experimental TBI, and (iii) to provide empirical evidence of biological factors associated with greater efficacy. Methods We conducted a systematic search of PubMed, EMBASE, and Web of Science and hand searched related references. Studies were selected if they reported the efficacy of MSCs in animal models of TBI. Two investigators independently assessed the identified studies. We extracted the details of individual study characteristics from each publication, assessed study quality, evaluated the effect sizes of MSCs treatment, and performed stratified meta-analysis and meta-regression, to assess the influence of study design on the estimated effect size. The presence of small effect sizes was investigated using funnel plots and Egger’s tests. Results Twenty-eight eligible controlled studies were identified. The study quality was modest. Between-study heterogeneity was large. Meta-analysis showed that MSCs exert statistically significant positive effects on sensorimotor and neurological motor function. For sensorimotor function, maximum effect size in studies with a quality score of 5 was found in the weight-drop impact injury TBI model established in male SD rats, to which syngeneic umbilical cord-derived MSCs intracerebrally at cell dose of (1–5) × 106 was administered r 6 hours following TBI, using ketamine as anesthetic agent. For neurological motor function, effect size was maximum for studies with a quality score of 5, in which the weight-drop impact injury TBI models of the female Wistar rats were adopted, with administration syngeneic bone marrow-derived MSCs intravenously at cell dose of 5 × 106 at 2 months after TBI, using sevofluorane as anesthetic agent. Conclusions We conclude that MSCs therapy may improve locomotor recovery after TBI. However, additional well-designed and well-reported animal studies are needed to guide further clinical studies. Electronic supplementary material The online version of this article (doi:10.1186/s13287-015-0034-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Weijun Peng
- Department of Integrated Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, PR China.
| | - Jing Sun
- Department of Pathology, Development and Regeneration Key Laboratory of Sichuan Province, Chengdu Medical College, Chengdu, Sichuan, 610500, PR China.
| | - Chenxia Sheng
- Department of Integrated Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, PR China.
| | - Zhe Wang
- Department of Integrated Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, PR China.
| | - Yang Wang
- Institute of Integrated Medicine, Xiangya Hospital, Central South University, No. 87 Xiangya Road, Changsha, Hunan, 410008, PR China.
| | - Chunhu Zhang
- Institute of Integrated Medicine, Xiangya Hospital, Central South University, No. 87 Xiangya Road, Changsha, Hunan, 410008, PR China.
| | - Rong Fan
- Institute of Integrated Medicine, Xiangya Hospital, Central South University, No. 87 Xiangya Road, Changsha, Hunan, 410008, PR China.
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Bred to breed?! Implications of continuous mating on the emotional status of mouse offspring. Behav Brain Res 2015; 279:155-65. [DOI: 10.1016/j.bbr.2014.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 10/30/2014] [Accepted: 11/04/2014] [Indexed: 01/02/2023]
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Abstract
Translation of cancer gene transfer confronts many familiar-and some distinctive-ethical challenges. In what follows, I survey three major ethical dimensions of cancer gene transfer development. Subheading 1 centers on the ethics of planning, designing, and reporting animal studies. Subheading 2 describes basic elements of human subjects protection as pertaining to cancer gene transfer. In Subheading 3, I describe how cancer gene transfer researchers have obligations to downstream consumers of the evidence they produce.
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Affiliation(s)
- Jonathan Kimmelman
- Studies in Translation, Ethics and Medicine (STREAM), Biomedical Ethics Unit/McGill University, 3647 Peel Street, Montreal, QC, Canada, H3A 1X1,
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Impact of statins on cognitive deficits in adult male rodents after traumatic brain injury: a systematic review. BIOMED RESEARCH INTERNATIONAL 2014; 2014:261409. [PMID: 25157352 PMCID: PMC4135130 DOI: 10.1155/2014/261409] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 07/12/2014] [Indexed: 12/18/2022]
Abstract
The efficacy of statin treatment on cognitive decline is controversial, and the effect of statins on cognitive deficits in individuals with traumatic brain injury (TBI) has yet to be investigated. Therefore, we systematically reviewed the effect of statins on cognitive deficits in adult male rodents after TBI. After identifying eligible studies by searching four electronic databases on February 28, 2014, we assessed study quality, evaluated the efficacy of statin treatment, and performed stratified metaregression and metaregression to assess the influence of study design on statin efficacy. Eleven studies fulfilled our inclusion criteria from a total of 183 publications. The overall methodological quality of these studies was poor. Meta-analysis showed that statins exert statistically significant positive effects on cognitive performance after TBI. Stratified analysis showed that atorvastatin has the greatest effect on acquisition memory, simvastatin has the greatest effect on retention memory, and statin effects on acquisition memory are higher in closed head injury models. Metaregression analysis further showed that that animal species, study quality, and anesthetic agent impact statin effects on retention memory. We conclude that statins might reduce cognitive deficits after TBI. However, additional well-designed and well-reported animal studies are needed to inform further clinical study.
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Peng W, Xing Z, Yang J, Wang Y, Wang W, Huang W. The efficacy of erythropoietin in treating experimental traumatic brain injury: a systematic review of controlled trials in animal models. J Neurosurg 2014; 121:653-64. [PMID: 25036201 DOI: 10.3171/2014.6.jns132577] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECT Erythropoietin (EPO) shows promise as a neuroprotective agent in animal models of traumatic brain injury (TBI). However, clinical trials of the efficacy of EPO treatment in patients with TBI yield conflicting results. The authors conducted a systematic review and meta-analysis to assess the effect of EPO in experimental animal models of TBI, the goal being to inform the design of future clinical trials. METHODS The authors identified eligible studies by searching PubMed, Web of Science, MEDLINE, Embase, and Google Scholar in October 2013. Data were pooled using the random-effects model, and results were reported in terms of standardized mean difference. Statistical heterogeneity was examined using both I(2) and chi-square tests, and the presence of small study effects was investigated with funnel plots and Egger tests. In-depth analyses were performed for lesion volume and neurobehavioral outcome, and the studies' methodological quality was also evaluated. RESULTS Of a total of 290 studies, 13 found an effect of EPO on lesion volume and neurobehavioral outcome. Overall, the methodological quality of the studies was poor, and there was evidence of statistical heterogeneity among the publications as well as small-study effects. However, in-depth analyses showed statistically significant findings in favor of a beneficial effect of EPO after TBI. CONCLUSIONS Despite limitations of this systematic review that may have influenced the findings, the authors conclude that EPO might be beneficial in treating experimental TBI in terms of reducing lesion volume and improving neurobehavioral outcome. However, this review also indicates that more well-designed and well-reported animal studies are needed.
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Affiliation(s)
- Weijun Peng
- Institute of Integrated Medicine, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
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