Bone and Bones ; drug effects ; metabolism ; Humans ; Lead ; adverse effects ; Osteogenesis ; drug effects

This study was undertaken to investigate the bone metabolism and bone mineral density (BMD) in female patients suffering from depression. Forty-two female patients diagnosed with depression and 42 healthy women, all in the premenopausal age, were enrolled. A clinical evaluation, measurements of the biochemical markers of bone metabolism and BMD measurements were performed. The BMD values were found to be similar in all measured sites. It was concluded that a low BMD was not a prominent feature of premenopausal women with mild depression, even though an increase in bone resorption was found.
Adult ; Antidepressive Agents/adverse effects ; *Bone Density ; Bone and Bones/*metabolism ; Depression/drug therapy/*metabolism ; Female ; Human ; Middle Age ; Premenopause

OBJECTIVETo investigate the effect of zoledronic acid on proliferation and osteogenic differentiation of osteoblasts.

METHODSOsteoblasts were obtained from newly born rabbit jaw bones and cultured by the method of bone-tissue cultivation. Primary cultivated osteoblast was identified by alkaline phosphatase (ALP) and the mineralization nodes. Zoledronic acid at various concentrations was added to six groups of media with serial subcultivated cells (the final concentration: 0, 10(-5), 10(-6), 10(-7), 10(-8) and 10(-9) mol/L). At different time, ALP, osteoprotegerin and osteocalcin were observed and calculated.

RESULTSThe concentration of 10(-6), 10(-7), 10(-8) and 10(-9) mol/L zoledronic acid significantly increased ALP activity [(5.91 ± 0.35), (7.62 ± 0.33), (10.00 ± 0.38), (8.91 ± 0.29) U/L]. Protein expression of osteoprotegerin and osteocalcin was enhanced. The differences among the groups were significant (P < 0.01). Peak level was attained at a concentration of 10(-8) mol/L.

CONCLUSIONSZoledronic acid promotes osteoblast proliferation and maturation and modulates osteoprotegerin production.

Alkaline Phosphatase ; Animals ; Bone and Bones ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Diphosphonates ; pharmacology ; Imidazoles ; pharmacology ; Osteoblasts ; drug effects ; Osteocalcin ; drug effects ; metabolism ; Osteogenesis ; Osteoprotegerin ; drug effects ; metabolism ; Rabbits

This study was aimed to detect the effects of alcohol on bone metabolism and biomechanical property of growing mice. Thirty KM mice were randomly divided into 3 groups, namely basal control group (mice were killed at the beginning), normal control group (with distilled water given by gastrogavage), and 50% (V/V) alcohol group (with alcohol given by gastrogavage at the dose of 4 g x kg(-1) x d(-1) for 60 days). All mice were killed and their proximal tibia and tibial diaphysis were processed by undecalcified sections and measured by bone histomorphometry. The biomechanical properties of lumbar vertebra and femur were tested. Compared with normal control, the index of trabecular bone area (% Tb. Ar) of proximal tibial metaphysis (PTM) and the static parameter of cortical bone( Ct. Ar) both decreased obviously (P < 0.05) in alcohol group. Bone formation rate (BFR/TV) of trabecular bone and cortical bone dropped also (P < 0.05). The maximal resistibility of lumbar vertebra and structural mechanical strength of proximal femoral neck both declined significantly (P < 0.01) in alcohol group. Low dose of alcohol inhibited the bone formation rate of growing mice , thus leading to a disorder of bone metabolism and a decrease in biomechanical quality.
Animals ; Biomechanical Phenomena ; Bone Density ; drug effects ; Bone and Bones ; drug effects ; metabolism ; Ethanol ; adverse effects ; pharmacology ; Female ; Male ; Mice ; Random Allocation

OBJECTIVETo observe the clinical effect of acupuncture combined with TDP for treatment of postmenopausal patients with deficiency of liver and kidney syndrome and to explore its mechanism.

METHODSOne hundred and twelve cases were randomly divided into an acupuncture group and a medication group, 56 cases in each group. The acupuncture group was treated with acupuncture combined with TDP, Shenshu (BL 23), Mingmen (GV 4) and Guanyuan (CV 4) were selected as main points; the medication group was treated with oral administration of Nylestriol and Oryzanol. The therapeutic effects were evaluated after treatment of 3 months in the two groups, and the changes of estrogen,bone mineral density and endometrium of patients were observed before and after treatment.

RESULTSThe total effective rate of 94.6% in acupuncture group was superior to 75.0% in medication group (P<0.01), the acupuncture group was better than the medication group in increasing bone mineral density and decreasing the endometrial thickness (P<0.05, P<0.01), the medication group was better than the acupuncture group in decreasing the levels of serum follicular stimulating hormone (FSH) and luteinizing hormone (LH) and increasing the estradiol (E2) level (all P<0.01).

CONCLUSIONThe clinical effect of acupuncture combined with TDP for treatment of postmenopausal patients with deficiency of liver and kidney syndrome is significant, and it can increase bone mineral density, decrease endometrial thickness and obviously regulate the estrogen level.

Acupuncture Therapy ; Bone and Bones ; metabolism ; Estrogens ; metabolism ; Female ; Humans ; Kidney ; drug effects ; physiopathology ; Liver ; drug effects ; physiopathology ; Middle Aged ; Osteoporosis, Postmenopausal ; metabolism ; physiopathology ; therapy

Animals ; Bone Density ; drug effects ; Bone and Bones ; drug effects ; metabolism ; Calcium ; administration & dosage ; blood ; pharmacology ; Dietary Supplements ; Female ; Growth ; Rats ; Rats, Sprague-Dawley

This study was purposed to investigate the short-term effects of citrate administration on bone metabolism in the healthy blood donor volunteers. A crossover, placebo-controlled trial were conducted on 22 healthy blood donor volunteers. The volunteers received either a standardized infusion of citrate at 1.5 mg/(kg.min) or the equal volume of placebo normal saline, were washout for 2-3 weeks. During washout serial blood samples were collected and analyzed for bone biochemical markers and electrolytes, such as bone formation marker osteocalcin (OC), bone resorption marker carboxyterminal telopeptide of type I collagen (CTX), intact parathyroid hormone ((i)PTH), ionized calcium ((i)Ca(2+)) and phosphorus (P(i)). Serial urine samples were collected and analyzed for Ca(2+), P(i) and creatinine concentration. The results showed that compared with placebo group, infusion of citrate increased serum levels of OC and CTX (p < 0.0001). The greatest increase of OC and CTX levels occurred at the completion of the intervention. The increment of CTX was higher than OC (p = 0.02), and the OC/CTX ratio decreased (p < 0.01). Infusion of citrate also induced profound increase in serum (i)PTH level (p < 0.0001) and urinary calcium excretion (p < 0.0001), and decrease in serum (i)Ca(2+) (p < 0.0001) and P(i) (p < 0.01) levels. The decrease of (i)Ca(2+) level in female was higher than that in male (p = 0.007), but the changes of (i)PTH, OC, and CTX levels showed no differences between female and male. Changes of OC and CTX levels were closely related to each other (r = 0.56, p < 0.0001) and changes of both markers were negatively correlated with the change of serum (i)Ca(2+) concentration during the citrate intervention(r(OC) = -0.44, r(CTX) = -0.44, p < 0.0001). Increased levels of (i)PTH showed positively correlation with OC (r = 0.34, p = 0.02) and borderline correlation with CTX (r = 0.29, p = 0.06) in male. No such relationship was observed in female. All bone markers and electrolyte levels returned to baseline within 24 hours. It is concluded that the citrate load at the dose as a single platelet apheresis results in profound increase of bone turnover, which is characterized by a short-term increase of bone resorption and excretion of calcium. The possible effect of citrate on bone mass of long-term frequent platelet apheresis donor is worth concerning.
Adult ; Blood Donors ; Bone Remodeling ; drug effects ; Bone and Bones ; drug effects ; metabolism ; Citric Acid ; pharmacology ; Cross-Over Studies ; Female ; Humans ; Male ; Osteocalcin ; blood

PURPOSE: To compare the effect of vitamin K2 and risedronate on trabecular bone in glucocorticoid (GC)-treated rats. MATERIALS AND METHODS: Forty-eight Sprague-Dawley female rats, 3 months of age, were randomized by the stratified weight method into 5 groups according to the following treatment schedule: age-matched control, GC administration, and GC administration with concomitant administration of vitamin K2, risedronate, or vitamin K2 + risedronate. GC (methylprednisolone sodium succinate, 5.0 mg/kg) and risedronate (10 microgram/kg) were administered subcutaneously three and five times a week, respectively. Vitamin K2 (menatetrenone, 30 mg/kg) was administered orally three times a week. At the end of the 8-week experiment, bone histomorphometric analysis was performed on trabecular bone of the tibial proximal metaphysis. RESULTS: GC administration decreased trabecular bone mass compared with age-matched controls because of decreased bone formation (mineralizing surface, mineral apposition rate, and bone formation rate) and increased bone erosion. Vitamin K2 attenuated GC-induced trabecular bone loss by preventing GC-induced decrease in bone formation (mineralizing surface) and subsequently reducing GC-induced increase in bone erosion. Risedronate prevented GC-induced trabecular bone loss by preventing GC-induced increase in bone erosion although it also suppressed bone formation (mineralizing surface, mineral apposition rate, and bone formation rate). Vitamin K2 mildly attenuated suppression of bone formation (mineralizing surface) and bone erosion caused by risedronate without affecting trabecular bone mass when administered in combination. CONCLUSION: The present study showed differential effect of vitamin K2 and risedronate on trabecular bone in GC-treated rats.
Animals ; Bone Density/drug effects ; Bone and Bones/anatomy & histology/*drug effects/metabolism ; Etidronic Acid/*analogs & derivatives/pharmacology ; Female ; Glucocorticoids/*pharmacology ; Random Allocation ; Rats ; Vitamin K/*pharmacology ; Vitamins/*pharmacology

Ca45 resorption and incoporration into albino rat-bones in tissue culture was considered in studying the pathogenesis of osteoporosiscaused by cotinued administration of glucocorticoid, hydrocortisone succinate. 18-day old tibias were cultured in a chemically defined media, (BGJb). Hydrocotisone showed no effect on Ca45 resorption and little increase of Ca45 incorporation into bone. This may suggest that hydrocortisone produces osteoporosis not by direct effect but by secondary effects on calcium metabolism.
Animal ; Bone Development ; Bone and Bones/embryology ; Bone and Bones/metabolism* ; Calcification, Physiologic/drug effects ; Calcium/metabolism* ; Calcium Radioisotopes ; Hydrocortisone/adverse effects ; Hydrocortisone/pharmacology* ; Osteoporosis/chemically induced* ; Rats ; Tibia ; Tissue Culture

OBJECTIVETo assess bone health in epileptic children who have been treated with topiramate (TPM) or carbamazepine (CBZ).

METHODSSixty-three epileptic children who received TPM or CBZ treatment and 36 eileptic children who did not receive any drug treatment (control group) were enrolled. Bone mineral density (BMD) at lumbar vertebrae (L1-L4) and radius-ulna was evaluated by the dual-energy X-ray absorptiometry method. Biochemical indices of bone metabolism, including serum calcium, phosphorus and alkaline phosphatase contents were measured.

RESULTSThe serum calcium content was higher in the TPM group (2.41+/-0.17 mmol/L), but it was lower in the CBZ group (2.15+/-0.26 mmol/L) than that (2.26+/-0.11 mmol/L) in the control group (p<0.05). The serum phosphorus content in both the TPM (1.55+/-0.17 mmol/L) and the CBZ groups (1.52+/-0.26 mmol/L) was significantly lower than that in the control group (1.70+/-0.30 mmol/L) (p<0.05). There were no significant differences in the serum content of alkaline phosphatase between three groups. BMD was significantly reduced in both the TPM and the CBZ groups when compared to the control group (p<0.05).

CONCLUSIONSTPM and CBZ may result in alterations in serum contents of calcium, phosphorus and alkaline phosphatase as well as BMD reduction.

Adolescent ; Alkaline Phosphatase ; blood ; Anticonvulsants ; adverse effects ; Bone Density ; drug effects ; Bone and Bones ; drug effects ; metabolism ; Calcium ; blood ; Carbamazepine ; adverse effects ; Child ; Child, Preschool ; Epilepsy ; drug therapy ; metabolism ; Female ; Fructose ; adverse effects ; analogs & derivatives ; Humans ; Male ; Phosphorus ; blood