PMID- 34591909 OWN - NLM STAT- MEDLINE DCOM- 20211119 LR - 20211119 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 16 IP - 9 DP - 2021 TI - Can fingernail quality predict bone damage in Type 2 diabetes mellitus? a pilot study. PG - e0257955 LID - 10.1371/journal.pone.0257955 [doi] LID - e0257955 AB - Type 2 diabetes mellitus (T2DM) adversely affects the normal functioning, intrinsic material properties, and structural integrity of many tissues, including bone. It is well known that the clinical utility of areal bone mineral density (aBMD) is limited to assess bone strength in individuals with T2DM. Therefore, there is a need to explore new diagnostic techniques that can better assist and improve the accuracy of assessment of bone tissue quality. The present study investigated the link between bone and fingernail material/compositional properties in type 2 diabetes mellitus (T2DM). For that, femoral head and fingernail samples were obtained from twenty-five adult female patients (with/without T2DM) with fragility femoral neck fractures undergoing hemi/total hip arthroplasty. Cylindrical cores of trabecular bone were subjected to micro-CT, and lower bone volume fraction was observed in the diabetic group than the non-diabetic group due to fewer and thinner trabeculae in individuals with T2DM. The material and compositional properties of bone/fingernail were estimated using nanoindentation and Fourier Transform Infrared Spectroscopy, respectively. Both bone/fingernails in T2DM had lower reduced modulus (Er), hardness (H), lower Amide I and Amide II area ratio (protein content), higher sugar-to-matrix ratio, and relatively high carboxymethyl-lysine (CML) content compared with non-diabetic patients. Sugar-to-matrix ratio and relative CML content were strongly and positively correlated with HbA1c for both bone/fingernail. There was a positive correlation between bone and fingernail glycation content. Our findings provide evidence that the degradation pattern of bone and fingernail properties go hand-in-hand in individuals with T2DM. Hence, the fingernail compositional/material properties might serve as a non-invasive surrogate marker of bone quality in T2DM; however, further large-scale studies need to be undertaken. FAU - Sihota, Praveer AU - Sihota P AD - Department of Mechanical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab, India. FAU - Pal, Rimesh AU - Pal R AD - Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Yadav, Ram Naresh AU - Yadav RN AD - Department of Mechanical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab, India. FAU - Neradi, Deepak AU - Neradi D AD - Department of Orthopedics, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Karn, Shailesh AU - Karn S AD - Department of Orthopedics, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Goni, Vijay G AU - Goni VG AD - Department of Orthopedics, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Sharma, Siddhartha AU - Sharma S AD - Department of Orthopedics, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Mehandia, Vishwajeet AU - Mehandia V AD - Department of Mechanical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab, India. FAU - Bhadada, Sanjay Kumar AU - Bhadada SK AD - Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, India. FAU - Kumar, Navin AU - Kumar N AUID- ORCID: 0000-0002-7958-8155 AD - Department of Mechanical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab, India. FAU - Rao, Sudhaker D AU - Rao SD AD - Department of Bone and Mineral Metabolism, Henry Ford Hospital, Detroit, MI, United States of America. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210930 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 70YDX3Z2O7 (N(6)-carboxymethyllysine) RN - K3Z4F929H6 (Lysine) SB - IM MH - Aged MH - Arthroplasty, Replacement, Hip MH - Case-Control Studies MH - Diabetes Mellitus, Type 2/*complications/metabolism MH - Female MH - Femoral Neck Fractures/*pathology/surgery MH - Femur Neck/chemistry/*diagnostic imaging/pathology MH - Humans MH - Lysine/*analogs & derivatives/analysis MH - Middle Aged MH - Nails/chemistry/*diagnostic imaging/pathology MH - Osteoporosis, Postmenopausal/*diagnostic imaging/metabolism/pathology MH - Pilot Projects MH - Spectroscopy, Fourier Transform Infrared MH - X-Ray Microtomography PMC - PMC8483292 COIS- The authors have declared that no competing interests exist. EDAT- 2021/10/01 06:00 MHDA- 2021/11/20 06:00 PMCR- 2021/09/30 CRDT- 2021/09/30 17:27 PHST- 2021/02/08 00:00 [received] PHST- 2021/09/14 00:00 [accepted] PHST- 2021/09/30 17:27 [entrez] PHST- 2021/10/01 06:00 [pubmed] PHST- 2021/11/20 06:00 [medline] PHST- 2021/09/30 00:00 [pmc-release] AID - PONE-D-21-04313 [pii] AID - 10.1371/journal.pone.0257955 [doi] PST - epublish SO - PLoS One. 2021 Sep 30;16(9):e0257955. doi: 10.1371/journal.pone.0257955. eCollection 2021.