Unmanned aerial survey of fallen trees in a deciduous broadleaved forest in eastern Japan.

Since fallen trees are a key factor in biodiversity and biogeochemical cycling, information about their spatial distribution is of use in determining species distribution and nutrient and carbon cycling in forest ecosystems. Ground-based surveys are both time consuming and labour intensive. Remote-sensing technology can reduce these costs.

Vitamin D reduces falls and hip fractures in vascular Parkinsonism but not in Parkinson's disease.

Purpose: Vitamin D supplementation is suggested to reduce the risk of falls in older institutionalized or ambulatory individuals by 20%. The present study was undertaken to address the reduced risk, by vitamin D supplementation, of falls and hip fractures in patients with vascular Parkinsonism (VP) and Parkinson's disease (PD).

Patients And Methods: In the open-label-study, 94 elderly patients with VP and 92 age-matched patients with PD were followed for 2 years.

Once-weekly risedronate for prevention of hip fracture in women with Parkinson's disease: a randomised controlled trial.

Background: Incidence of a fracture, particularly in the hip joint, is high in Parkinson's disease (PD), owing to the immobilisation-induced bone resorption and vitamin D deficiency with reduced bone mineral density (BMD). The authors previously demonstrated the lowered incidence of hip fractures in PD by daily administration of risedronate and vitamin D.

Methods: This randomised, double-blind, placebo-controlled study was conducted to determine the efficacy of 17.

The prevention of hip fracture with menatetrenone and risedronate plus calcium supplementation in elderly patients with Alzheimer disease: a randomized controlled trial.

A high incidence of fractures, particularly of the hip, represents an important problem in patients with Alzheimer disease (AD), who are prone to falls and have osteoporosis. We previously found that vitamin K deficiency and low 25-hydroxyvitamin D (25-OHD) with compensatory hyperparathyroidism cause reduced bone mineral density (BMD) in female patients with AD. This may modifiable by intervention with menatetrenone (vitamin K2) and risedronate sodium; we address the possibility that treatment with menatetrenone, risedronate and calcium may reduce the incidence of nonvertebral fractures in elderly patients with AD.

Vitamin d deficiency-induced vertebral fractures may cause stooped posture in Parkinson disease.

Objective: To determine the pathogenesis of the stooped posture in Parkinson disease (PD), we prospectively studied fractures in a cohort of patients with Parkinson disease for 5 yrs.

Design: At baseline, we recorded the dietary intake of vitamin D and serum concentrations of parathyroid hormone and 25-hydroxyvitamin D. Bone mineral density and lateral thoracic and lumbar spine radiographs were obtained at baseline and every year for 5 yrs.

Amelioration of osteoporosis and hypovitaminosis D by sunlight exposure in Parkinson's disease.

A high incidence of fractures, particularly of the hip, represents an important problem in patients with Parkinson's disease (PD), who are prone to falls and have osteoporosis. We previously showed that 25-hydroxyvitamin D (25-OHD) deficiency due to sunlight deprivation with compensatory hyperparathyroidism causes reduced bone mineral density (BMD) in elderly patients with PD. The present study was undertaken to address the possibility that sunlight exposure may maintain BMD and reduce the incidence of hip fracture in elderly patients with PD.

RETRACTED: An open-label trial comparing alendronate and alphacalcidol in reducing falls and hip fractures in disabled stroke patients.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).

RETRACTED: Beneficial effect of etidronate therapy in chronically hospitalized, disabled patients with stroke.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).

Long-term oral anticoagulation therapy and the risk of hip fracture in patients with previous hemispheric infarction and nonrheumatic atrial fibrillation.

Warfarin therapy has been demonstrated to reduce the risk of stroke in nonrheumatic atrial fibrillation (NRAF). We showed that long-term warfarin therapy reduces vitamin K and second metacarpal bone mineral density (BMD) in NRAF patients who had previous hemispheric infarction. To determine whether warfarin is associated with increased hip fracture risk, we compared the incidence of hip fracture between post-stroke patients receiving warfarin therapy and post-stroke patients without such therapy.

Risedronate and ergocalciferol prevent hip fracture in elderly men with Parkinson disease.

Background: There is a high incidence of hip fractures in patients with Parkinson disease (PD). Bone mineral density (BMD) is decreased in patients with PD, correlating with the immobilization-induced bone resorption and hypovitaminosis D with compensatory hyperparathyroidism.

Objective: To evaluate the effectiveness of risedronate, an inhibitor of bone resorption, on osteoporosis and the risk of hip fractures in elderly men with PD.

Longitudinal study of bone and calcium metabolism and fracture incidence in spinocerebellar degeneration.

Little is known about bone and calcium metabolism and fracture incidence in spinocerebellar degeneration (SCD) despite frequent falls and immobilization. To address bone and calcium metabolism and fracture incidence in SCD, we conducted a 10-year prospective study in a cohort of adult patients with SCD. Bone mineral density (BMD) and serum levels of ionized calcium, parathyroid hormone, 25-hydroxyvitamin D, and pyridinoline cross-linked carboxy-terminal telopeptide of type I collagen (ICTP) were followed in 110 patients with SCD for 10 years.

RETRACTED: Etidronate for fracture prevention in amyotrophic lateral sclerosis: a randomized controlled trial.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).

Cardiac involvement in malignant syndrome in Parkinson's disease.

Little is known about cardiac abnormalities in neuroleptic malignant syndrome (NMS) in Parkinson's disease (PD), although high levels of serum creatine kinase (CK) suggest the presence of cardiac involvement. We have also been aware of elevated serum myosin light chain I (MLCI) in these patients with no clear evidence of an acute coronary syndrome. To evaluate cardiac involvement in NMS in PD, we recorded the electrocardiogram (ECG) and measured serum MLCI and CK-MB levels.

Abnormal bone and calcium metabolism in immobilized Parkinson's disease patients.

To elucidate the influence of immobilization-induced hypercalcemia on bone metabolism in Parkinson's disease (PD), we measured serum biochemical indexes and bone mineral density (BMD) in the second metacarpals of 142 elderly PD patients and 99 age-matched healthy controls. Serum concentrations of 25-hydroxyvitamin D (25-OHD), 1,25-dihydroxyvitamin D (1,25-[OH](2)D), ionized calcium, intact parathyroid hormone (PTH), and intact bone Gla protein (BGP) were measured. Urinary deoxypyridinoline (D-Pyr) was also measured.

Amelioration by mecobalamin of subclinical carpal tunnel syndrome involving unaffected limbs in stroke patients.

Our previous study showed that overuse of the nonparetic hand and wrist of the nonparetic side following stroke result in significantly more abnormal on the nonparetic side than on the hemiparetic side in terms of electrophysiologic indices of median nerve function. The purpose of this study was to evaluate the effects of the orally administered mecobalamin, an analogue of vitamin B12, for carpal tunnel syndrome (CTS) in the nonparetic side in patients following stroke. In a randomized open label and prospective study of stroke patients, 67 received of 1500 mug mecobalamin daily for 2 years, and the remaining 68 (untreated group) did not.