PMID- 33669354 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240331 IS - 2079-7737 (Print) IS - 2079-7737 (Electronic) IS - 2079-7737 (Linking) VI - 10 IP - 2 DP - 2021 Feb 16 TI - Assessing Scientific Soundness and Translational Value of Animal Studies on DPP4 Inhibitors for Treating Type 2 Diabetes Mellitus. LID - 10.3390/biology10020155 [doi] LID - 155 AB - Although there is a wide range of animal models of type 2 diabetes mellitus (T2DM) used in research; we have limited evidence on their translation value. This paper provides a) a comparison of preclinical animal and clinical results on the effect of five dipeptidyl peptidase-4 (DPP4) inhibitors by comparing the pharmaceutical caused glucose changes, and b) an evaluation of methodological and reporting standards in T2DM preclinical animal studies. DPP4 inhibitors play an important role in the clinical management of T2DM: if metformin alone is not sufficient enough to control the blood sugar levels, DPP4 inhibitors are often used as second-line therapy; additionally, DPP-4 inhibitors are also used in triple therapies with metformin and sodium-glucose co-transporter-2 (SGLT-2) inhibitors or with metformin and insulin. In our analysis of 124 preclinical studies and 47 clinical trials, (1) we found no evidence of species differences in glucose change response to DPP4 inhibitors, which may suggest that, for this drug class, studies in mice and rats may be equally predictive of how well a drug will work in humans; and (2) there is good reporting of group size, sex, age, euthanasia method and self-reported compliance with animal welfare regulations in animal studies but poor reporting of justification of group size, along with a strong bias towards the use of male animals and young animals. Instead of the common non-transparent model selection, we call for a reflective and evidenced-based assessment of predictive validity of the animal models currently available. FAU - Franco, Nuno Henrique AU - Franco NH AUID- ORCID: 0000-0003-4015-0532 AD - Laboratory Animal Science Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal. AD - Instituto de Investigacao e Inovacao da Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal. FAU - Miranda, Sonia Batista AU - Miranda SB AUID- ORCID: 0000-0002-7973-8264 AD - Laboratory Animal Science Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal. AD - Instituto de Investigacao e Inovacao da Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal. FAU - Kovacs, Nora AU - Kovacs N AD - Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Kassai ut 26, 4028 Debrecen, Hungary. FAU - Nagy, Attila AU - Nagy A AD - Faculty of Public Health, University of Debrecen, Kassai ut 26, 4028 Debrecen, Hungary. FAU - Thien, Bui Quoc AU - Thien BQ AD - Faculty of Medicine, University of Debrecen, Egyetem Square 1, 4032 Debrecen, Hungary. FAU - Reis, Flavio AU - Reis F AUID- ORCID: 0000-0003-3401-9554 AD - Institute of Pharmacology and Experimental Therapeutics, and Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal. AD - Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3004-504 Coimbra, Portugal. AD - Clinical Academic Center of Coimbra (CACC), 3004-504 Coimbra, Portugal. FAU - Varga, Orsolya AU - Varga O AD - Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Kassai ut 26, 4028 Debrecen, Hungary. AD - Office for Research Groups Attached to Universities and Other Institutions, Hungarian Academy of Sciences, 1051 Budapest, Hungary. LA - eng PT - Journal Article DEP - 20210216 PL - Switzerland TA - Biology (Basel) JT - Biology JID - 101587988 PMC - PMC7920304 OTO - NOTNLM OT - animal models OT - predictive validity OT - research bias OT - translational medicine OT - type 2 diabetes mellitus COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2021/03/07 06:00 MHDA- 2021/03/07 06:01 PMCR- 2021/02/16 CRDT- 2021/03/06 01:04 PHST- 2021/01/14 00:00 [received] PHST- 2021/02/10 00:00 [revised] PHST- 2021/02/13 00:00 [accepted] PHST- 2021/03/06 01:04 [entrez] PHST- 2021/03/07 06:00 [pubmed] PHST- 2021/03/07 06:01 [medline] PHST- 2021/02/16 00:00 [pmc-release] AID - biology10020155 [pii] AID - biology-10-00155 [pii] AID - 10.3390/biology10020155 [doi] PST - epublish SO - Biology (Basel). 2021 Feb 16;10(2):155. doi: 10.3390/biology10020155.