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Mohn C, Troncoso G, Ossola C, Bozzini C, Elverdin JC, Fernández-Solari J. Deleterious effect of chronic high-dose ethanol intake on biomechanical bone properties and periodontal status. Odontology 2023:10.1007/s10266-023-00872-3. [PMID: 38157109 DOI: 10.1007/s10266-023-00872-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/05/2023] [Indexed: 01/03/2024]
Abstract
To evaluate the effect of high-graduation chronic ethanol (EtOH) intake on bone and periodontal tissues of rats. Male Wistar rats (250 g) were divided into two groups of n = 12 each one. EtOH (5 ml of 3 g/kg) was administered to the experimental group by gastric gavage twice a day for 20 days and the control group received water under the same conditions. The rats were euthanized and used to perform biochemical determination in plasma and gingival tissue, and histological and biomechanical studies in the femur and mandibular tissues. Alcohol increased both TNFα (p < 0.01) and PGE2 (p < 0.05) in plasma and gingiva (p < 0.05) as compared to controls. In addition, EtOH increased the alveolar bone loss as evidenced by the increased distance between the cement enamel junction and the alveolar crest (p < 0.01), the lower % of interradicular bone expressed as bone area/total area (B.Ar/T.Ar, p < 0.05) and the larger periodontal space (p < 0.05), as compared to controls. Likewise, the mandibular microtomographic analysis in alcoholized rats revealed a lower % of interradicular bone volume/total volume (BV/TV, p < 0.05), greater trabecular separation (p < 0.05) and greater % trabecular porosity (p < 0.05) than controls. No biomechanical alteration was observed in lower jaws, while the femur of alcoholized rats presented a decrease in the structural bone properties (p < 0.001), as a systemic consequence of deterioration of the diaphyseal architecture (p < 0.01) without changes in material properties. The consumption of high doses of alcohol produces deleterious effects on periodontal tissues that could be due not only to local but also systemic effects.
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Affiliation(s)
- Claudia Mohn
- Faculty of Dentistry, University of Buenos Aires, Marcelo T. de Alvear 2142, 3ºA, CABA, 1122, Buenos Aires, Argentina.
- National Council for Scientific and Technical Research (CONICET), Buenos Aires, Argentina.
| | - Gastón Troncoso
- Faculty of Dentistry, University of Buenos Aires, Marcelo T. de Alvear 2142, 3ºA, CABA, 1122, Buenos Aires, Argentina
| | - Cesar Ossola
- Faculty of Dentistry, University of Buenos Aires, Marcelo T. de Alvear 2142, 3ºA, CABA, 1122, Buenos Aires, Argentina
| | - Clarisa Bozzini
- Faculty of Dentistry, University of Buenos Aires, Marcelo T. de Alvear 2142, 3ºA, CABA, 1122, Buenos Aires, Argentina
| | - Juan Carlos Elverdin
- Faculty of Dentistry, University of Buenos Aires, Marcelo T. de Alvear 2142, 3ºA, CABA, 1122, Buenos Aires, Argentina
| | - Javier Fernández-Solari
- Faculty of Dentistry, University of Buenos Aires, Marcelo T. de Alvear 2142, 3ºA, CABA, 1122, Buenos Aires, Argentina
- National Council for Scientific and Technical Research (CONICET), Buenos Aires, Argentina
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Wagner L, Howe K, Philbrick KA, Maddalozzo GF, Kuah AF, Wong CP, Olson DA, Branscum AJ, Iwaniec UT, Turner RT. Effects of Alcohol and Estrogen Receptor Blockade Using ICI 182,780 on Bone in Ovariectomized Rats. Alcohol Clin Exp Res 2019; 43:2301-2311. [PMID: 31479513 DOI: 10.1111/acer.14185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 08/22/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Estrogen signaling is essential for the sexual dimorphism of the skeleton, is required for normal bone remodeling balance in adults, and may influence the skeletal response to alcohol. High levels of alcohol consumption lower bone mass in ovary-intact but not ovariectomized (ovx) rats. However, the extremely rapid rate of bone loss immediately following ovx may obscure the effects of alcohol. We therefore determined (i) whether heavy alcohol consumption (35% caloric intake) influences bone in sexually mature ovx rats with established cancellous osteopenia and (ii) whether ICI 182,780 (ICI), a potent estrogen receptor signaling antagonist, alters the skeletal response to alcohol. METHODS Three weeks following ovx, rats were randomized into 5 groups, (i) baseline, (ii) control + vehicle, (iii) control + ICI, (iv) ethanol (EtOH) + vehicle, or (v) EtOH + ICI, and treated accordingly for 4 weeks. Dual-energy X-ray absorptiometry, microcomputed tomography, blood measurements of markers of bone turnover, and gene expression in femur and uterus were used to evaluate response to alcohol and ICI. RESULTS Rats consuming alcohol had lower bone mass and increased fat mass. Bone microarchitecture of the tibia and gene expression in femur were altered; specifically, there was reduced accrual of cortical bone, net loss of cancellous bone, and differential expression of 19/84 genes related to bone turnover. Furthermore, osteocalcin, a marker of bone turnover, was lower in alcohol-fed rats. ICI had no effect on weight gain, body composition, or cortical bone. ICI reduced cancellous bone loss and serum CTX-1, a biochemical marker of bone resorption; alcohol antagonized the latter 2 responses. Neither alcohol nor ICI affected uterine weight or gene expression. CONCLUSIONS Alcohol exaggerated bone loss in ovx rats in the presence or absence of estrogen receptor blockade with ICI. The negligible effect of alcohol on uterus and limited effects of ICI on bone in alcohol-fed ovx rats suggest that estrogen receptor signaling plays a limited role in the action of alcohol on bone in a rat model for chronic alcohol abuse.
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Affiliation(s)
- Lindsay Wagner
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Kathy Howe
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Kenneth A Philbrick
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Gianni F Maddalozzo
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Amida F Kuah
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Carmen P Wong
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Dawn A Olson
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Adam J Branscum
- Biostatistics Program, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon
| | - Urszula T Iwaniec
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon.,Center for Healthy Aging Research, Oregon State University, Corvallis, Oregon
| | - Russell T Turner
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon.,Center for Healthy Aging Research, Oregon State University, Corvallis, Oregon
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Martiniakova M, Sarocka A, Babosova R, Grosskopf B, Kapusta E, Goc Z, Formicki G, Omelka R. Changes in the microstructure of compact and trabecular bone tissues of mice subchronically exposed to alcohol. JOURNAL OF BIOLOGICAL RESEARCH (THESSALONIKE, GREECE) 2018; 25:8. [PMID: 29876325 PMCID: PMC5968607 DOI: 10.1186/s40709-018-0079-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 05/18/2018] [Indexed: 01/16/2023]
Abstract
BACKGROUND Alcohol is one of the most commonly consumed neurotoxins by humans. Its negative effect on bone health is known for a long time. However, its impact on qualitative and quantitative 2D characteristics of the compact bone is still unclear. Therefore, the aim of this study was to investigate in detail the effects of subchronic alcohol exposure on compact and trabecular bone tissues microstructure of laboratory mice using 2D and 3D imaging methods. Ten clinically healthy 12 weeks-old mice (males) were randomly divided into two groups. Animals from experimental group (group E; n = 5) drank a solution composed of 15% ethanol and water (1.7 g 100% ethanol kg-1 b.w. per day) for 8 weeks, while those from control group (group C; n = 5) drank only water. RESULTS Subchronic exposure to alcohol leads to several changes in qualitative 2D characteristics of the compact bone such as the presence of primary vascular radial bone tissue in pars anterior of endosteal border and a higher number of resorption lacunae (five times more) in the middle part of substantia compacta. Morphometrical 2D evaluations of the compact bone showed significantly increased sizes of primary osteons' vascular canals (p < 0.05) in mice from the experimental group (E group). Sizes of Haversian canals and secondary osteons were not affected by alcohol consumption. In mice from the E group, significantly lower values for relative bone volume and bone mineral density of the compact bone were observed. In the trabecular bone, decreased values for bone volume, trabecular number, trabecular thickness and bone surface (p < 0.05) were documented. CONCLUSIONS Alcohol decreased not only bone volume and density of the compact bone, but it also reduced trabecular bone volume and leads to trabecular thinning. It caused vasodilation of primary osteons' vascular canals and increased porosity in the compact bone.
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Affiliation(s)
- Monika Martiniakova
- Department of Zoology and Anthropology, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia
| | - Anna Sarocka
- Department of Zoology and Anthropology, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia
| | - Ramona Babosova
- Department of Zoology and Anthropology, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia
| | - Birgit Grosskopf
- Institute of Zoology and Anthropology, Georg-August University, 37 073 Göttingen, Germany
| | - Edyta Kapusta
- Department of Animal Physiology and Toxicology, Pedagogical University of Cracow, 30 084 Cracow, Poland
| | - Zofia Goc
- Department of Animal Physiology and Toxicology, Pedagogical University of Cracow, 30 084 Cracow, Poland
| | - Grzegorz Formicki
- Department of Animal Physiology and Toxicology, Pedagogical University of Cracow, 30 084 Cracow, Poland
| | - Radoslav Omelka
- Department of Botany and Genetics, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia
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Sönmez TT, Bayer A, Cremer T, Hock JVP, Lethaus B, Kweider N, Wruck CJ, Drescher W, Jahr H, Lippross S, Pufe T, Tohidnezhad M. The protective effect of platelet released growth factors and bone augmentation (Bio-Oss ® ) on ethanol impaired osteoblasts. Ann Anat 2017; 214:36-42. [DOI: 10.1016/j.aanat.2017.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/17/2017] [Accepted: 07/12/2017] [Indexed: 01/02/2023]
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Gaddini GW, Turner RT, Grant KA, Iwaniec UT. Alcohol: A Simple Nutrient with Complex Actions on Bone in the Adult Skeleton. Alcohol Clin Exp Res 2016; 40:657-71. [PMID: 26971854 DOI: 10.1111/acer.13000] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Accepted: 01/02/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Alcohol is an important nonessential component of diet, but the overall impact of drinking on bone health, especially at moderate levels, is not well understood. Bone health is important because fractures greatly reduce quality of life and are a major cause of morbidity and mortality in the elderly. Regular alcohol consumption is most common following skeletal maturity, emphasizing the importance of understanding the skeletal consequences of drinking in adults. METHODS This review focuses on describing the complex effects of alcohol on the adult skeleton. Studies assessing the effects of alcohol on bone in adult humans as well as skeletally mature animal models published since the year 2000 are emphasized. RESULTS Light to moderate alcohol consumption is generally reported to be beneficial, resulting in higher bone mineral density (BMD) and reduced age-related bone loss, whereas heavy alcohol consumption is generally associated with decreased BMD, impaired bone quality, and increased fracture risk. Bone remodeling is the principal mechanism for maintaining a healthy skeleton in adults and dysfunction in bone remodeling can lead to bone loss and/or decreased bone quality. Light to moderate alcohol may exert beneficial effects in older individuals by slowing the rate of bone remodeling, but the impact of light to moderate alcohol on bone remodeling in younger individuals is less certain. The specific effects of alcohol on bone remodeling in heavy drinkers are even less certain because the effects are often obscured by unhealthy lifestyle choices, alcohol-associated disease, and altered endocrine signaling. CONCLUSIONS Although there have been advances in understanding the complex actions of alcohol on bone, much remains to be determined. Limited evidence implicates age, skeletal site evaluated, duration, and pattern of drinking as important variables. Few studies systematically evaluating the impact of these factors have been conducted and should be made a priority for future research. In addition, studies performed in skeletally mature animals have potential to reveal mechanistic insights into the precise actions of alcohol and associated comorbidity factors on bone remodeling.
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Affiliation(s)
- Gino W Gaddini
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon
| | - Russell T Turner
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon.,Center for Healthy Aging Research, Oregon State University, Corvallis, Oregon
| | - Kathleen A Grant
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon
| | - Urszula T Iwaniec
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon.,Center for Healthy Aging Research, Oregon State University, Corvallis, Oregon
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Maurel DB, Boisseau N, Pallu S, Rochefort GY, Benhamou CL, Jaffre C. Regular exercise limits alcohol effects on trabecular, cortical thickness and porosity, and osteocyte apoptosis in the rat. Joint Bone Spine 2013; 80:492-8. [DOI: 10.1016/j.jbspin.2012.12.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 12/19/2012] [Indexed: 12/18/2022]
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Shimizu Y, Sakai A, Menuki K, Mori T, Isse T, Oyama T, Kawamoto T, Nakamura T. Reduced bone formation in alcohol-induced osteopenia is associated with elevated p21 expression in bone marrow cells in aldehyde dehydrogenase 2-disrupted mice. Bone 2011; 48:1075-86. [PMID: 21256255 DOI: 10.1016/j.bone.2011.01.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Revised: 12/14/2010] [Accepted: 01/11/2011] [Indexed: 12/12/2022]
Abstract
INTRODUCTION High consumption of alcohol is one of the risk factors for osteoporosis. Approximately 45% of Chinese and Japanese individuals have the inactive aldehyde dehydrogenase 2 (Aldh2) phenotype. The absence of the ALDH2*2 allele is found to adversely influence the risk of osteoporosis. The aim of this study is to clarify the effects of alcohol consumption on osteoblast differentiation in bone marrow and trabecular bone formation in Aldh2-disrupted mice. MATERIALS AND METHODS Seven-week-old male Aldh2 knockout mice (Aldh2(-/-)) and wild-type (Aldh2(+/+)) mice were fed with water (groups Aldh2(-/-)/Wa and Aldh2(+/+)/Wa) or with 5% ethanol (groups Aldh2(-/-)/Al and Aldh2(+/+)/Al) for 4 weeks. At the age of 12 weeks, bone histomorphometry was performed at the secondary spongiosa of the tibias. Bone marrow cells from the bilateral femurs and tibias were used for mRNA expression analysis. RESULTS Histomorphometrical study revealed that trabecular bone was significantly reduced in the Aldh2(-/-)/Al group compared with that in the Aldh2(-/-)/Wa and Aldh2(+/+)/Wa groups. Bone formation rate was significantly decreased in Aldh2(-/-)/Al compared with the other three groups. Quantitative RT-PCR revealed a significant decrease in type I collagen, osterix, osteopontin, and osteocalcin mRNA expressions in Aldh2(-/-)/Al compared with Aldh2(-/-)/Wa. In bone marrow cell cultures, mineralized nodule formation in Aldh2(-/-)/Al was significantly decreased compared with that in Aldh2(+/+)/Wa and Aldh2(-/-)/Wa, while PAK18, a p21-activated kinase inhibitor, recovered the decreased mineralized nodule formation in Aldh2(-/-)/Al. CONCLUSION Alcohol consumption suppressed the differentiation and mineralization of osteoblasts and then reduced trabecular bone formation and bone volume in association with the elevated p21 expression in bone marrow cells, especially in aldehyde dehydrogenase 2-disrupted mice.
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Affiliation(s)
- Yuki Shimizu
- Department of Orthopaedic Surgery, University of Occupational and Environmental Health, Yahatanishi-ku, Kitakyushu, Japan.
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Turner RT, Rosen CJ, Iwaniec UT. Effects of alcohol on skeletal response to growth hormone in hypophysectomized rats. Bone 2010; 46:806-12. [PMID: 19879987 PMCID: PMC3522444 DOI: 10.1016/j.bone.2009.10.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2009] [Revised: 10/20/2009] [Accepted: 10/26/2009] [Indexed: 10/20/2022]
Abstract
Chronic alcohol abuse is an established risk factor for osteoporosis. However, the precise mechanisms for the bone loss are largely unknown. Alcohol decreases skeletal expression of insulin-like growth factor-I (IGF-I), an important growth hormone (GH)-regulated skeletal growth factor. Therefore, we investigated the effects of alcohol on the skeletal response to GH in male Sprague-Dawley rats made GH-deficient by hypophysectomy (HYPOX). Four groups of sexually mature (3-month-old) rats were studied: pituitary-intact (control), HYPOX, HYPOX + GH, and HYPOX + alcohol + GH. All animals were transferred to a liquid diet 6 days following surgery. The alcohol-fed group was adapted to a graded increase in alcohol beginning 11 days following surgery. GH or vehicle was administered during the final 8 days of study and all animals were sacrificed 25 days following surgery. HYPOX resulted in cessation of body weight gain and tibial growth. Compared to controls, longitudinal bone growth and cancellous bone formation were lower following HYPOX. The latter was associated with lower mineralizing perimeter/bone perimeter. Bone marrow adiposity was higher following HYPOX. Compared to HYPOX, GH treatment increased body weight gain and bone formation rate, and decreased bone marrow adiposity. In contrast to the effects of GH treatment without alcohol, bone marrow adiposity did not differ between HYPOX and alcohol-fed GH-treated HYPOX rats. Alcohol did not alter GH-induced weight gain or increases in serum IGF-I levels, but significantly impaired the effects of GH on tibial growth and cancellous bone formation. We conclude that the detrimental skeletal effects of alcohol abuse observed in this experiment are mediated, at least in part, by skeletal resistance to GH.
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Affiliation(s)
- Russell T. Turner
- Department of Nutrition and Exercise Sciences, Oregon State University, Corvallis, OR
| | - Clifford J Rosen
- Maine Center for Osteoporosis Research and Education, St Joseph Hospital, Bangor, Maine
- The Jackson Laboratory, Bar Harbor, Maine
| | - Urszula T. Iwaniec
- Department of Nutrition and Exercise Sciences, Oregon State University, Corvallis, OR
- Corresponding author: Urszula T. Iwaniec, Ph.D., Department of Nutrition and Exercise Sciences, 108 Milam Hall, Oregon State University, Corvallis, OR 97331, Tel: 541-737-9925, Fax: 541-737-6914,
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de Souza DM, Ricardo LH, Prado MDA, Prado FDA, da Rocha RF. The effect of alcohol consumption on periodontal bone support in experimental periodontitis in rats. J Appl Oral Sci 2009; 14:443-7. [PMID: 19089245 PMCID: PMC4327297 DOI: 10.1590/s1678-77572006000600010] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2006] [Accepted: 11/06/2006] [Indexed: 11/30/2022] Open
Abstract
Objective: The aim of this study was to evaluate the effect of the alcohol consumption on the periodontal bone support (PBS) in experimental periodontitis in rats. Materials and Methods: Sixty-three male rats were divided into seven groups: G1 (control); G2 (10% ethanol); G3 (nutritional control of G2); G4 (20% ethanol); G5 (nutritional control of G4); G6 (30% ethanol) and G7 (nutritional control of G6). The groups G3, G5 and G7 received controlled diets with equivalent caloric amounts to those consumed in G2, G4 and G6 respectively, with the ethanol replaced by sucrose. After anesthesia, ligatures were installed around the mandibular first molar, leaving the contralateral teeth unligated. After 8 weeks, the rats were killed and their mandibles were radiographed to measure the percentage of PBS on the distal aspect. Results: The intragroup analyses showed that presence of ligatures induced periodontitis (p<0.05). Unligated groups did not show significant differences among the percentages of PBS (p=0.1969). However, in ligated groups the rats that received alcohol (G2:48.71%±3.88; G4:47.66%±2.54; G6:47.32%±3.24) and the nutritional control group associated with a high concentration of ethanol (G7:47.40%±3.24) presented a significantly lower percentage of PBS than the other groups (G1:52.40%±2.75; G3:52.83%±2.41; G5:50.85%±4.14). Conclusions: These results demonstrated that alcohol consumption in rats may result in a direct effect on alveolar bone loss and increased development of periodontitis. In addition, they suggest that heavy caloric consumption of ethanol may also present an indirect effect on periodontal tissue as a consequence of malnutrition.
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Souza DMD, Ricardo LH, Kantoski KZ, Rocha RFD. Influence of alcohol consumption on alveolar bone level associated with ligature-induced periodontitis in rats. Braz Oral Res 2009; 23:326-32. [DOI: 10.1590/s1806-83242009000300017] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Accepted: 08/22/2008] [Indexed: 11/21/2022] Open
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Dose-dependent reduction of hazardous alcohol use in a placebo-controlled trial of naltrexone for smoking cessation. Int J Neuropsychopharmacol 2009; 12:589-97. [PMID: 18796184 PMCID: PMC3094855 DOI: 10.1017/s146114570800936x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The opiate antagonist naltrexone (Ntx) has demonstrated efficacy in the treatment of alcohol dependence and as a component of treatment to reduce heavy drinking. At present, there are no published dose-ranging clinical trials of the oral preparation for treatment of problem drinking. The present study evaluated the effects of Ntx on alcohol use among the subset of hazardous drinkers (n=102) who participated in a placebo-controlled, dose-ranging trial of oral Ntx (25-mg, 50-mg and 100-mg doses) combined with open-label transdermal nicotine patch for enhancing smoking cessation. On the primary outcome--no hazardous drinking (drinking that exceeded weekly or daily limits) during treatment--25 mg and 50 mg Ntx were superior to placebo (each p<0.05). These findings remained after controlling for baseline predictors or smoking abstinence during treatment. Time to remission of hazardous drinking was examined as a secondary outcome with definitions of hazardous drinking based on weekly limits, daily limits and the combination of weekly and daily limits and the results were consistent with the primary findings. In conclusion, the findings suggest that Ntx can reduce the risk of hazardous drinking in smokers who are not seeking or receiving alcohol treatment, providing strong evidence for the pharmacological effects of Ntx on drinking. This effect appears to favour lower doses that may be better tolerated and less expensive than the higher 100-mg dose. Given its efficacy and favourable side-effect profile, the 25-mg dose should be considered for future studies of combination therapy.
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Malik P, Gasser RW, Kemmler G, Moncayo R, Finkenstedt G, Kurz M, Fleischhacker WW. Low bone mineral density and impaired bone metabolism in young alcoholic patients without liver cirrhosis: a cross-sectional study. Alcohol Clin Exp Res 2008; 33:375-81. [PMID: 19053976 DOI: 10.1111/j.1530-0277.2008.00847.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Osteoporosis is regularly mentioned as a consequence of alcoholism. Ethanol's direct effect on bone-modeling cells as well as alcoholism-related "life-style factors" such as malnutrition, lack of exercise, hormonal changes, and liver cirrhosis are discussed as potential causative factors. METHODS In a cross-sectional study, we have examined 57 noncirrhotic alcoholic patients (37 male, 20 female) aged 27 to 50 years. Patients suffering from comorbid somatic diseases and with co-medication known to have an influence on bone mineral density (e.g., glucocorticoids, heparin, anticonvulsant agents, oral contraceptives) were excluded. We determined bone mineral density (BMD) by dual x-ray absorptiometry (DXA) in the lumbar spine (L1-L4) and the proximal right femur (femoral neck, total hip) as well as parameters of bone metabolism. RESULTS In males but not females, BMD was significantly reduced in the lumbar region, as well as in the proximal femur (femoral neck, total hip). Nine male patients (24.3% of men) and 1 female patient (5% of women) had low BMD (defined as Z-score < or = -2.0). As expected, there was a positive correlation between body mass index (BMI) and BMD. Alcohol-related factors (e.g., duration of abuse, consumed amount of alcohol per day) as well as smoking were not associated with a significant effect on BMD. All of the 20 women examined showed elevated estradiol levels, which may have served as a protective factor. In this study, 75.7% of the men and 90% of the women had vitamin D insufficiency or deficiency (plasma levels of 25-hydroxy-vitamin D < 30 ng/ml). CONCLUSIONS Our study indicates that younger alcoholic patients without other diseases may suffer from an increased risk to develop low BMD and a disturbance of vitamin D metabolism. Nutritional factors or less exposure to sunlight may play an important role in bone loss in young alcoholic patients. BMD measurement and assessment of bone metabolism should be considered in all patients with chronic alcoholism.
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Affiliation(s)
- Peter Malik
- Department of Biological Psychiatry, Medical University Innsbruck, Anichstrasse 35, Innsbruck, Austria.
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13
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Torricelli P, Fini M, Giavaresi G, Borsari V, Rimondini L, Rimondini R, Carrassi A, Giardino R. Intermittent exposure to ethanol vapor affects osteoblast behaviour more severely than estrogen deficiency does in vitro study on rat osteoblasts. Toxicology 2007; 237:168-176. [PMID: 17590496 DOI: 10.1016/j.tox.2007.05.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Revised: 05/09/2007] [Accepted: 05/09/2007] [Indexed: 12/15/2022]
Abstract
With rising rates of alcohol consumption acute and chronic damage from alcohol is expected to increase all over the world. Habitual excessive alcohol consumption is associated with pathological effects on bone. The aim of the present in vitro study was to investigate comparatively the proliferation and synthetic activity of osteoblasts (OB) isolated from the trabecular bone of rats previously exposed to 7-week intermittent exposure to ethanol vapor, sham-aged rats and long-term estrogen deficient rats. Cell proliferation (WST1) and synthesis of alkaline phosphatase (ALP), osteocalcin (OC), collagen I (CICP), transforming growth factor beta1 (TGF-beta1), interleukin-6 (IL-6), tumor necrosis factor alfa (TNFalpha) were measured at 3, 7 and 14 days of culture. Osteoblast proliferation rate and TGF-beta1, IL-6 and TNFalpha syntheses were significantly affected by alcohol exposure. Estrogen deficiency and alcohol consumption share many common pathophysiological mechanisms of damage to bone, but alcohol affects OB proliferation and TNFalpha synthesis significantly more than menopause does. Therefore, these in vitro data suggest that alcohol has even more deleterious effects on bone than estrogen deficiency does.
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Affiliation(s)
- Paola Torricelli
- Laboratory of Experimental Surgery, Research Institute Codivilla-Putti, Rizzoli Orthopaedic Institute, via di Barbiano 1/10, 40136 Bologna, Italy.
| | - Milena Fini
- Laboratory of Experimental Surgery, Research Institute Codivilla-Putti, Rizzoli Orthopaedic Institute, via di Barbiano 1/10, 40136 Bologna, Italy.
| | - Gianluca Giavaresi
- Laboratory of Experimental Surgery, Research Institute Codivilla-Putti, Rizzoli Orthopaedic Institute, via di Barbiano 1/10, 40136 Bologna, Italy.
| | - Veronica Borsari
- Laboratory of Experimental Surgery, Research Institute Codivilla-Putti, Rizzoli Orthopaedic Institute, via di Barbiano 1/10, 40136 Bologna, Italy.
| | - Lia Rimondini
- Department of Medical Sciences, University of Eastern Piedmont "Amedeo Avogadro", via Solaroli 17, 20068 Novara, Italy.
| | - Roberto Rimondini
- Department of Pharmacology, University of Bologna, Via Irnerio 48, 40128 Bologna, Italy.
| | - Antonio Carrassi
- Unit of Oral Pathology and Medicine, School of Dentistry, University of Milan, Via Beldiletto 1/4, 20100 Milan, Italy.
| | - Roberto Giardino
- Laboratory of Experimental Surgery, Research Institute Codivilla-Putti, Rizzoli Orthopaedic Institute, via di Barbiano 1/10, 40136 Bologna, Italy; Surgical Pathophysiology, University of Bologna, Italy.
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Callaci JJ, Juknelis D, Patwardhan A, Wezeman FH. Binge alcohol treatment increases vertebral bone loss following ovariectomy: compensation by intermittent parathyroid hormone. Alcohol Clin Exp Res 2006; 30:665-72. [PMID: 16573585 PMCID: PMC3065175 DOI: 10.1111/j.1530-0277.2006.00078.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Postmenopausal estrogen deficiency and alcohol abuse are known risk factors for osteoporosis. Previous studies of the combined effect of alcohol and ovariectomy on bone loss using chronic alcohol-feeding models have not demonstrated additional alcohol-induced bone loss in ovariectomized (OVX) animals. Binge alcohol treatment causes rapid bone loss in male rats. We hypothesized that binge alcohol would cause additional bone loss in OVX rats. METHODS Ninety-six adult (400 g) female Sprague-Dawley rats (48 sham-operated and 48 OVX, pair fed) were randomly divided into 4 treatment groups: (a) saline-treated, (b) binge alcohol-treated (3 g/kg alcohol as a 20% weight to volume alcohol/saline solution, intraperitoneal (IP), 3 times per week), (c) parathyroid hormone (PTH)-treated (80 microg/kg, SC, 5 d/wk), and (d) binge alcohol plus PTH. Rats were treated for either 2 or 4 weeks. Following treatment periods, blood was collected for alcohol concentration (BAC) measurements; lumbar vertebrae were removed for bone mineral density (BMD) levels, trabecular microarchitecture assessment, and vertebral compressive strength analysis. RESULTS Peak binge BACs averaged 300 mg/dL. Alcohol and OVX decreased cancellous BMD: alcohol and OVX treatment in combination caused additional cancellous BMD loss and significant cortical BMD reductions. Compressive strength was also decreased by OVX and alcohol. Combination treatment resulted in further declines in bone strength. Micro-CT analysis revealed a significant effect of combined OVX and alcohol treatment resulting in decreased trabecular bone volume/total volume (BV/TV). Intermittent PTH administration compensated for losses of BMD, compressive strength, and restored BV/TV deficits caused by OVX, alcohol, or their combination. CONCLUSIONS Bone loss following OVX can be significantly increased by concurrent binge alcohol treatment. The effects of alcohol and OVX are compensated by concurrent intermittent treatment with PTH. These results suggest that postmenopausal women who abuse alcohol may place their skeleton at additional risk for osteoporotic fracture.
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Affiliation(s)
- John J Callaci
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Stritch School of Medicine, Maywood, Illinois 60153, USA.
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15
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Abstract
BACKGROUND Chronic consumption of excessive alcohol eventually results in an osteopenic skeleton and increased risk for osteoporosis. Alcoholics experience not only increased incidence of fractures from falls, but also delays in fracture healing compared with non-alcoholics. In this review the term "alcohol-induced bone disease" is used to refer to these skeletal abnormalities. Alcohol-induced osteopenia is distinct from osteoporoses such as postmenopausal osteoporosis and disuse osteoporosis. Gonadal insufficiency increases the rate of bone remodeling, whereas alcohol decreases this rate. Thus, histomorphometric studies show different characteristics for the bone loss that occurs in these two disease states. In particular, alcohol-induced osteopenia results mainly from decreased bone formation rather than increased bone resorption. Human, animal and cell culture studies of the effects of alcohol on bone strongly suggest alcohol has a dose-dependent toxic effect on osteoblast activity. The capacity of bone marrow stromal cells to differentiate into osteoblasts has a critical role in the cellular processes involved in the maintenance of the adult human skeleton by bone remodeling. Chronic alcohol consumption suppresses osteoblastic differentiation of bone marrow cells and promotes adipogenesis. In fracture healing, the effect of alcohol is to suppress synthesis of an ossifiable matrix, possibly due to inhibition of cell proliferation and maldifferentiation of mesenchymal cells in the repair tissue. This results in the deficient bone repair observed in animal studies, characterized by repair tissue of lower stiffness, strength and mineral content. Current knowledge of cellular effects and molecular mechanisms involved in alcohol-induced bone disease is insufficient to develop interventional strategies for its prevention and treatment. OBJECTIVES The objectives of this review are 1) to identify the characteristics of alcohol-induced bone loss and deficient bone repair as revealed in human and animal studies, 2) to determine the current understanding of the cellular effects underlying both skeletal abnormalities, and 3) to suggest directions for future studies to resolve current ambiguities regarding the cellular basis of alcohol-induced bone disease.
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Affiliation(s)
- Dennis A Chakkalakal
- Orthopaedic Research Laboratory and Alcohol Research Center, Omaha Veterans Affairs Medical Center, Creighton University Biomedical Engineering Research Center and Department of Surgery, Omaha, Nebraska 68105, USA.
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