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Ahn J, Park HS, Cho SJ, Baek S, Rhee Y, Hong N. Association of secondhand smoke with fracture risk in community-dwelling nonsmoking adults in Korea. JBMR Plus 2024; 8:ziae010. [PMID: 38505531 PMCID: PMC10945720 DOI: 10.1093/jbmrpl/ziae010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 01/01/2024] [Accepted: 01/07/2024] [Indexed: 03/21/2024] Open
Abstract
Although the detrimental effects of active smoking on bone health have been widely recognized, the impact of secondhand smoke exposure on fracture risk in non-smokers remains less understood. A total of 4843 nonsmokers aged 40-69 yr, who participated in the Korean Genome and Epidemiology Study from 2001 to 2018, were analyzed. The participants were categorized into two groups based on their exposure status to secondhand smoke: currently exposed and unexposed. The exposure group was subsequently divided into two subgroups based on the median weekly exposure time (high vs low). The incidence of new fractures was determined using self-reported questionnaires. The identified fractures were categorized according to the fracture site: overall, vertebral, hip, non-vertebral, and non-vertebral non-hip fractures. The mean age of the participants was 52.4 yr (84.1% women). Exposure to secondhand smoke was associated with an increased risk of fracture (adjusted hazard ratio [aHR]: 1.27, P = 0.028) after adjusting for multiple covariates including age, sex, BMI, household income, bone density of mid-shaft tibia, C-reactive protein, alcohol consumption, and fracture history. Secondhand smoke remained as a significant risk factor for fracture, independent of the major osteoporotic fracture probabilities estimated using a fracture risk assessment tool (aHR: 1.24, P = 0.038). The high exposure group had higher risk of fracture than that of the unexposed group (aHR: 1.33, P = 0.025), whereas the fracture risk did not differ significantly between low exposure and unexposed groups (aHR: 1.18, P = 0.253), suggesting a potential dose-response relationship. Secondhand smoke showed robust association with increased risk of non-vertebral (aHR: 1.37, P = 0.008) or non-vertebral non-hip fractures (aHR: 1.36, P = 0.013), while its association with vertebral fracture was attenuated (aHR: 1.03, P = 0.908). Secondhand smoke was associated with an elevated risk of fracture in nonsmokers, independent of clinical risk factors.
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Affiliation(s)
- Junyeong Ahn
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Hye-Sun Park
- Department of Internal Medicine, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul 03722, Republic of Korea
| | - Sung Joon Cho
- Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, Severance Hospital, Seoul 03722, Republic of Korea
| | - Seungjin Baek
- Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, Severance Hospital, Seoul 03722, Republic of Korea
| | - Yumie Rhee
- Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, Severance Hospital, Seoul 03722, Republic of Korea
| | - Namki Hong
- Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, Severance Hospital, Seoul 03722, Republic of Korea
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da Silva ACR, Vasques AMV, Bueno CRE, Ervolino E, Cintra LTÂ, Biguetti CC, Matsumoto MA, Dezan-Junior E. Effects of cigarette smoke inhalation on the immune-inflammatory profile of experimental apical periodontitis in rats. Int Endod J 2023; 56:1559-1570. [PMID: 37787896 DOI: 10.1111/iej.13981] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 09/21/2023] [Indexed: 10/04/2023]
Abstract
OBJECTIVE To evaluate the effects of cigarette smoke inhalation on the immune-inflammatory profile of experimental apical periodontitis in rats. METHODOLOGY In total, 32 male Wistar rats were divided into four groups (n = 8): AP-induced apical periodontitis; S-cigarette smoke inhalation; APS-induced AP and cigarette smoke inhalation; and C (control)-neither AP nor cigarette smoke inhalation. To induce cigarette smoke inhalation, the animals were kept in a chamber filled with tobacco smoke for 8 min thrice a day for 50 days. AP was induced 20 days after inhalation initiation by exposing their coronary pulp to their oral environment for 30 days. After animals were euthanized, their right hemimaxillae were removed for histopathological, semi-quantitative and immunohistochemical (F4/80, CD206 and iNOS) analyses. RESULTS Quantitative data showed a moderate number of inflammatory infiltrates in AP and an intense number in APS (p < .05). Comparing F4/80+ cells showed no statistically significant differences among groups, but we found more CD206+ cells in AP than in C and S (p > .05). INOS+ immunostaining showed a significant increase in AP and APS, when compared with C and S (p < .05). APS had more iNOS+ cells than AP (p < .05). CONCLUSION Cigarette smoke inhalation worsened AP, leading to a predominantly pro- inflammatory profile in our experimental model.
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Affiliation(s)
- Ana Claudia Rodrigues da Silva
- Departamento de Odontologia Preventiva e Restauradora, Faculdade de Odontologia, Universidade Estadual Paulista (UNESP), Araçatuba, Brazil
| | - Ana Maria Veiga Vasques
- Departamento de Odontologia Preventiva e Restauradora, Faculdade de Odontologia, Universidade Estadual Paulista (UNESP), Araçatuba, Brazil
| | - Carlos Roberto Emerenciano Bueno
- Departamento de Odontologia Preventiva e Restauradora, Faculdade de Odontologia, Universidade Estadual Paulista (UNESP), Araçatuba, Brazil
| | - Edilson Ervolino
- Departamento de Ciências Básicas, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista (UNESP), São Paulo, Brazil
| | - Luciano Tavares Ângelo Cintra
- Departamento de Odontologia Preventiva e Restauradora, Faculdade de Odontologia, Universidade Estadual Paulista (UNESP), Araçatuba, Brazil
| | - Claudia Cristina Biguetti
- Regenerative Medicine Research Laboratory, Department of Surgery and Biomechanics, School of Podiatric Medicine, University of Texas Rio Grande Valley, Harlingen, Texas, USA
| | - Mariza Akemi Matsumoto
- Departamento de Ciências Básicas, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista (UNESP), São Paulo, Brazil
| | - Eloi Dezan-Junior
- Departamento de Odontologia Preventiva e Restauradora, Faculdade de Odontologia, Universidade Estadual Paulista (UNESP), Araçatuba, Brazil
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Gulec M, Tassoker M, Erturk M. Evaluation of cortical and trabecular bone structure of the mandible in patients using L-Thyroxine. BMC Oral Health 2023; 23:886. [PMID: 37986156 PMCID: PMC10659045 DOI: 10.1186/s12903-023-03670-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/14/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Long-term use of L-Thyroxine (LT4), the synthetic thyroxine hormone used for thyroid hormone replacement therapy, is an important risk factor for osteoporosis. The aim of this study was to investigate the differences between mandibular cortical index (MCI) and trabecular bone fractal dimension (FD) values on panoramic radiographs of patients using LT4 and control subjects. METHODS A total of 142 female patients, 71 cases and 71 controls, were analyzed in the study. Ages were matched in case and control groups and the mean age was 36.6 ± 8.2 (18 to 50) years. MCI consisting of C1 (Normal Mandibular Cortex), C2 (Moderately Resorbed Mandibular Cortex) and, C3 (Severely Resorbed Cortex) scores was determined for case and control groups. Fractal analysis was performed using ImageJ on selected regions of interest from the gonial and interdental regions. The box-count method was used to calculate FD values. Wilcoxon signed-rank test, Mann-Whitney U test, and Spearman correlation analysis were applied to compare the measurements. Statistical significance of differences was established at P < 0.05 level. RESULTS FD values did not show statistically significant differences between case and control groups (p > 0.05). The mean FD in the right gonial region was 1.38 ± 0.07 in the case group and 1.38 ± 0.08 in the control group (p = 0.715). The mean FD in the right interdental region was 1.37 ± 0.06 in the cases and 1.36 ± 0.06 in the control group (p = 0.373). The mean FD in the left gonial region was 1.39 ± 0.07 in the cases and 1.39 ± 0.07 in the control group (p = 0.865). The mean FD in the left interdental region is 1.37 ± 0.06 in the cases and 1.38 ± 0.05 in the control group (p = 0.369). The most common MCI score was C1, with 62% in the cases and 83.1% in the control group. MCI scores showed a statistically significant difference between cases and controls (p = 0.016, p < 0.05). While the C2 score was higher in the cases, the C1 score was higher in the controls. CONCLUSIONS LT4 use was not associated with the FD of mandibular trabecular bone, but was associated with MCI values of cortical bone. Further studies on larger samples with different imaging modalities and image processing methods are needed.
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Affiliation(s)
- Melike Gulec
- Department of Dentomaxillofacial Radiology, Karamanoğlu Mehmetbey University Faculty of Dentistry, Karaman, Turkey
| | - Melek Tassoker
- Department of Dentomaxillofacial Radiology, Necmettin Erbakan University Faculty of Dentistry, Bağlarbaşı sk, Meram, Konya, 42050, Turkey.
| | - Mediha Erturk
- Department of Dentomaxillofacial Radiology, Necmettin Erbakan University Faculty of Dentistry, Bağlarbaşı sk, Meram, Konya, 42050, Turkey
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Vasques AMV, da Silva ACR, Bueno CRE, Cury MTS, Ervolino E, Cintra LTA, Dezan Junior E. Inflammatory profile of apical periodontitis exacerbated by cigarette smoke inhalation: Histological and immunohistochemical analysis in rats. Int Endod J 2023; 56:465-474. [PMID: 36585248 DOI: 10.1111/iej.13883] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 01/01/2023]
Abstract
AIM The aim of this study was to evaluate the effects of cigarette smoke inhalation (CSI) on inflammation, pro-inflammatory mediators and haematological parameters in rats with induced apical periodontitis (AP). METHODOLOGY Thirty-two 3-month-old male Wistar rats were divided into four experimental groups (n = 8): C-Control; S-rats with CSI; AP-rats with AP; and SAP-rats with CSI + AP. Animals in groups S and SAP inhaled cigarette smoke by remaining inside a smoking chamber for 8 min, three times daily, for 50 days. After 20 days of smoke inhalation, animals in AP and SAP groups had the pulps of the lower right first molar exposed to oral environment for 30 days to induce AP. In these subsequent 30 days, animals in group S and SAP continued with CSI. On Day 50, animals were euthanized and mandibles were histologically processed to assess inflammatory infiltrate, immunohistochemical interleukins (IL-1β, IL-6 and TNF-α), and blood samples collected for laboratory analysis. The Mann-Whitney test was performed for non-parametric data and the pairwise analyses of Student's t-test for parametric data, with a significance level of p < .050. RESULTS Inflammatory infiltrate was moderate in AP group and more severe in the SAP (p = .010). The interleukins IL-6, IL-1β and TNF-α were higher in SAP group (p < .001) when compared to the AP group. A greater number of red blood cells (p = .010), haemoglobin (p = .007) and neutrophils (p = .014) were observed in the SAP group in comparison with the AP group. CONCLUSION Cigarette smoke inhalation induced a more severe inflammatory infiltrate, with increased levels of pro-inflammatory cytokines and changes in haematological parameters in rats with induced AP. Thus, CSI aggravated AP, exacerbating the inflammatory response.
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Affiliation(s)
- Ana Maria Veiga Vasques
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Ana Claudia Rodrigues da Silva
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Carlos Roberto Emerenciano Bueno
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Marina Tolomei Sandoval Cury
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Edilson Ervolino
- Department of Basic Science, School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, Brazil
| | - Luciano Tavares Angelo Cintra
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Eloi Dezan Junior
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, Brazil
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Khalid SI, Eldridge C, Singh R, Shanker RM, MacDonald AM, Chilakapati S, Smith J, Mehta AI, Adogwa O. The impact of smoking and smoking cessation interventions on outcomes following single-level anterior cervical discectomy and fusion procedures. Clin Neurol Neurosurg 2022; 219:107319. [DOI: 10.1016/j.clineuro.2022.107319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 11/27/2022]
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Khalid SI, Thomson KB, Chilakapati S, Singh R, Eldridge C, Mehta AI, Adogwa O. The Impact of Smoking Cessation Therapy on Lumbar Fusion Outcomes. World Neurosurg 2022; 164:e119-e126. [PMID: 35439621 DOI: 10.1016/j.wneu.2022.04.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVE While there are several reports on the impact of smoking tobacco on spinal fusion outcomes, there is minimal literature on the influence of modern smoking cessation therapies on such outcomes. Our study explores the outcomes of single-level lumbar fusion surgery in active smokers and in smokers undergoing recent cessation therapy. METHODS MARINER30, an all-payer claims database, was utilized to identify patients undergoing single-level lumbar fusions between 2010 and 2019. The primary outcomes were the rates of any complication, symptomatic pseudarthrosis, need for revision surgery, and all-cause readmission within 30 and 90 days. RESULTS The exact matched population analyzed in this study contained 31,935 patients undergoing single-level lumbar fusion with 10,645 (33%) in each of the following groups: (1) active smokers; (2) patients on smoking cessation therapy; and (3) those without any smoking history. Patients undergoing smoking cessation therapy have reduced odds of developing any complication following surgery (odds ratio 0.86, 95% confidence interval 0.80-0.93) when compared with actively smoking patients. Nonsmokers and patients on cessation therapy had a significantly lower rate of any complication compared with the smoking group (9.5% vs. 17% vs. 19%, respectively). CONCLUSIONS When compared with active smoking, preoperative smoking cessation therapy within 90 days of surgery decreases the likelihood of all-cause postoperative complications. However, there were no between-group differences in the likelihood of pseudarthrosis, revision surgery, or readmission within 90 days.
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Affiliation(s)
- Syed I Khalid
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA.
| | - Kyle B Thomson
- Chicago Medical School, Rosalind Franklin University, North Chicago, Illinois, USA
| | - Sai Chilakapati
- Department of Neurosurgery, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
| | - Ravi Singh
- Department of Neurosurgery, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
| | - Cody Eldridge
- Department of Neurosurgery, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
| | - Ankit I Mehta
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Owoicho Adogwa
- Department of Neurosurgery, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
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Lu Y, Di YP, Chang M, Huang X, Chen Q, Hong N, Kahkonen BA, Di ME, Yu C, Keller ET, Zhang J. Cigarette smoke-associated inflammation impairs bone remodeling through NFκB activation. J Transl Med 2021; 19:163. [PMID: 33882954 PMCID: PMC8061040 DOI: 10.1186/s12967-021-02836-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/16/2021] [Indexed: 01/23/2023] Open
Abstract
Background Cigarette smoking constitutes a major lifestyle risk factor for osteoporosis and hip fracture. It is reported to impair the outcome of many clinical procedures, such as wound infection treatment and fracture healing. Importantly, although several studies have already demonstrated the negative correlation between cigarette consume and impaired bone homeostasis, there is still a poor understanding of how does smoking affect bone health, due to the lack of an adequately designed animal model. Our goal was to determine that cigarette smoke exposure impairs the dynamic bone remodeling process through induction of bone resorption and inhibition of bone formation. Methods We developed cigarette smoke exposure protocols exposing mice to environmental smoking for 10 days or 3 months to determine acute and chronic smoke exposure effects. We used these models, to demonstrate the effect of smoking exposure on the cellular and molecular changes of bone remodeling and correlate these early alterations with subsequent bone structure changes measured by microCT and pQCT. We examined the bone phenotype alterations in vivo and ex vivo in the acute and chronic smoke exposure mice by measuring bone mineral density and bone histomorphometry. Further, we measured osteoclast and osteoblast differentiation gene expression levels in each group. The function changes of osteoclast or osteoblast were evaluated. Results Smoke exposure caused a significant imbalance between bone resorption and bone formation. A 10-day exposure to cigarette smoke sufficiently and effectively induced osteoclast activity, leading to the inhibition of osteoblast differentiation, although it did not immediately alter bone structure as demonstrated in mice exposed to smoke for 3 months. Cigarette smoke exposure also induced DNA-binding activity of nuclear factor kappaB (NFκB) in osteoclasts, which subsequently gave rise to changes in bone remodeling-related gene expression. Conclusions Our findings suggest that smoke exposure induces RANKL activation-mediated by NFκB, which could be a “smoke sensor” for bone remodeling. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-02836-z.
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Affiliation(s)
- Yi Lu
- School of Medicine, Southern University of Science and Technology, No. 1088 Xueyuan Blvd, Nanshan District, Shenzhen, 518055, Guangdong, China.,Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen, 518055, Guangdong, China
| | - Yuanpu Peter Di
- Department of Environmental and Occupational Health, University of Pittsburgh, 100 Technology Dr, Pittsburgh, PA, 15261, USA.
| | - Ming Chang
- School of Medicine, Southern University of Science and Technology, No. 1088 Xueyuan Blvd, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Xin Huang
- School of Medicine, Southern University of Science and Technology, No. 1088 Xueyuan Blvd, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Qiuyan Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Ni Hong
- School of Medicine, Southern University of Science and Technology, No. 1088 Xueyuan Blvd, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Beth A Kahkonen
- Department of Environmental and Occupational Health, University of Pittsburgh, 100 Technology Dr, Pittsburgh, PA, 15261, USA
| | - Marissa E Di
- Department of Environmental and Occupational Health, University of Pittsburgh, 100 Technology Dr, Pittsburgh, PA, 15261, USA
| | - Chunyan Yu
- Department of Urology & Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Evan T Keller
- Department of Urology & Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jian Zhang
- School of Medicine, Southern University of Science and Technology, No. 1088 Xueyuan Blvd, Nanshan District, Shenzhen, 518055, Guangdong, China. .,Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen, 518055, Guangdong, China. .,Department of Urology, University of Pittsburgh, Pittsburgh, 15260, USA.
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Morris TM, Marlborough FJ, Montgomery RJ, Allison KP, Eardley WGP. Smoking and the patient with a complex lower limb injury. Injury 2021; 52:814-824. [PMID: 33495022 DOI: 10.1016/j.injury.2020.12.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/11/2020] [Accepted: 12/23/2020] [Indexed: 02/02/2023]
Abstract
Smoking is known to increase the risk of peri-operative complications in Orthoplastic surgery by impairing bone and wound healing. The effects of nicotine replacement therapies (NRTs) and electronic cigarettes (e-cigarettes) has been less well established. Previous reviews have examined the relationship between smoking and bone and wound healing separately. This review provides surgeons with a comprehensive and contemporaneous account of how smoking in all forms interacts with all aspects of complex lower limb trauma. We provide a guide for surgeons to refer to during the consent process to enable them to tailor information towards smokers in such a way that the patient may understand the risks involved with their surgical treatment. We update the literature with recently discovered methods of monitoring and treating the troublesome complications that occur more commonly in smokers effected by trauma.
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Affiliation(s)
- Timothy M Morris
- Orthoplastic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW.
| | - Fergal J Marlborough
- Orthoplastic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW
| | - Richard J Montgomery
- Orthoplastic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW
| | - Keith P Allison
- Orthoplastic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW
| | - William G P Eardley
- Orthoplastic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW
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What is the effect of smoking on postoperative outcomes after ankle-fracture surgery? A retrospective cohort study. CURRENT ORTHOPAEDIC PRACTICE 2021. [DOI: 10.1097/bco.0000000000000966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Rosa RC, Rodrigues WF, Miguel CB, Cardoso FAG, Espindula AP, Oliveira CJF, Volpon JB. CHRONIC CONSUMPTION OF ALCOHOL ADVERSELY AFFECTS THE BONE OF YOUNG RATS. ACTA ORTOPEDICA BRASILEIRA 2019; 27:321-324. [PMID: 31798324 PMCID: PMC6870540 DOI: 10.1590/1413-785220192706222834] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objective: To assess the effect of chronic alcohol consumption on the longitudinal growth of the tibia and bone quality parameters in young rats under an experimental setup. METHODS: The control (n=10) rats received only water. The ethanol (n=10) rats received ethyl alcohol at concentrations established in the protocol for the induction of chronic alcohol consumption. The blood samples were immediately collected via cardiac puncture and processed to evaluate the levels of alkaline phosphatase by automated spectrophotometry. Following blood sample collection, both tibias were dissected, and weighed; the tibial length was measured., and the samples were stored in a freezer for future analysis of the bone mineral content and mechanical resistance, known as maximal load and stiffness. RESULTS: Compromised bone health, with a 35.3% decrease in the serum alkaline phosphatase levels (p < 0.01), a 10% decrease in the tibial mass (p < 0.05), and a 5.3% decrease in the tibial length (p < 0.0001) were noted. Furthermore, a 10% decrease in the bone mineral density was observed (p < 0.01), which led to a 17.2% decrease in the maximum strength (p < 0.01) and 22.6% decrease in stiffness (p < 0.001). CONCLUSION: Chronic consumption of alcohol affected the bones of young rats, making them weaker and osteopenic. In addition, the long bones were shorter, suggesting interference with growth. Level of Evidence III, Case Control Study.
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