Osteoprotegerin Levels Decrease in Abstinent Alcohol-Dependent Patients

Secondary Osteoporosis and Metabolic Bone Diseases

Fragility fracture is a worldwide problem and a main cause of disability and impaired quality of life. It is primarily caused by osteoporosis, characterized by impaired bone quantity and or quality. Proper diagnosis of osteoporosis is essential for prevention of fragility fractures. Osteoporosis can be primary in postmenopausal women because of estrogen deficiency. Secondary forms of osteoporosis are not uncommon in both men and women. Most systemic illnesses and organ dysfunction can lead to osteoporosis. The kidney plays a crucial role in maintaining physiological bone homeostasis by controlling minerals, electrolytes, acid-base, vitamin D and parathyroid function. Chronic kidney disease with its uremic milieu disturbs this balance, leading to renal osteodystrophy. Diabetes mellitus represents the most common secondary cause of osteoporosis. Thyroid and parathyroid disorders can dysregulate the osteoblast/osteoclast functions. Gastrointestinal disorders, malnutrition and malabsorption can result in mineral and vitamin D deficiencies and bone loss. Patients with chronic liver disease have a higher risk of fracture due to hepatic osteodystrophy. Proinflammatory cytokines in infectious, autoimmune, and hematological disorders can stimulate osteoclastogenesis, leading to osteoporosis. Moreover, drug-induced osteoporosis is not uncommon. In this review, we focus on causes, pathogenesis, and management of secondary osteoporosis.

Increased Bone Mineral Density after Abstinence in Male Patients with Alcohol Dependence

Objective

This study aimed to compare the bone mineral density of male patients with alcohol dependence with that in healthy controls and to assess changes in bone density after abstinence.

Methods

Forty-four inpatients with confirmed the Diagnostic and Statistical Manual of Mental Disorders, fourth edition diagnosis of alcohol abuse and 42 controls were recruited. Bone density was determined with dual-energy X-ray absorptiometry in the lumbar spine as well as in the femoral neck, trochanter, and Ward’s triangle regions of the proximal right femur.

Results

There were no significant differences in age and body mass index between patients with alcohol dependence and healthy controls. In the alcohol dependence group, osteopenia and osteoporosis were found in 54.5% and 34.1% of the patients, respectively, whereas in the control group, the corresponding values were 45.2% and 11.9% (p=0.001). Although the actual bone density in the femur and the corresponding T-scores were significantly lower in the alcohol dependence group, no significant differences were found in the lumbar spine. In both groups, body mass index showed a significant correlation with bone mineral density in all areas. After 3 to 4 years of abstinence, bone density significantly increased in the lumbar and femur.

Conclusion

We conclude that bone mineral density in patients with alcohol dependence was significantly lower than that in healthy controls, and the rates of osteopenia and osteoporosis are higher. Importantly, abstinence from alcohol increases bone density.