Using optimal culture conditions in which the transforming growth factor beta 1 (TGF-beta 1) inhibitory loop has been interrupted by antisense TGF-beta 1 oligonucleotides or anti-TGF-beta serum, we have compared the proliferative capacities and the abilities of the CD34+ CD38- cell populations from bone marrow and umbilical cord blood to generate early progenitors in long-term cultures. The CD3...

The Present study carried out on the bone samples collected from Roopkund Lake in Chamoli Garhwal, Uttarakhand, which is located 5029 meters from main sea level in between Nanda Ghunghti and Trishuli peak. This historical site belongs to the 9th century A.D.  All the samples selected for the study were dried in room temperature, as well as in hot air ovens at 32 degree Celsius. The Cleaning, pr...

Background. Usefulness of ultrasound (US) in detection of intrabony lesions has been showed. A cortical bone perforation or a very thin and intact cortical bone is prerequisite for this purpose. Objective. The current in vitro study was aimed at measuring the cut-off thickness of the overlying cortical bone which allows ultrasonic assessment of bony defects. Materials and Methods. 20 bovine sca...

The accurate measurement of local strain is necessary to study bone mechanics and to validate micro computed tomography (µCT) based finite element (FE) models at the tissue scale. Digital volume correlation (DVC) has been used to provide a volumetric estimation of local strain in trabecular bone sample with a reasonable accuracy. However, nothing has been reported so far for µCT based analysis ...

This study provides a taphonomic analysis of the largest known sample of bone fragments collected from chimpanzee hunts. The entire sample consists of 455 bone fragments from 57 chimpanzee hunting episodes of 65 prey individuals at Ngogo, Kibale National Park, Uganda. It has low taxonomic diversity, consisting overwhelmingly of primates, especially red colobus monkeys. The age distribution of t...

Cancellous bone microstructure is an important determinant of the mechanical integrity of vertebrae. The numerous microstructural parameters that have been studied extensively are generally represented as a single value obtained as an average over a sample. The range of the intra-sample variability of cancellous microstructure and its effect on the mechanical properties of bone are less well-un...

Abstract The present study aims to formulate a new multiscale constitutive model of human trabecular bone. bone was modelled as nonlinear viscoelastic material. effects single trabeculae were considered by means hereditary integral in which stress depends on time and strain, while the elastic response described hyperelastic Mooney–Rivlin model. cuboid sample extracted from femoral head during h...

To study the application of nano-composites in recovery sports ligament injury is main objective. Rabbits were divided into two groups on average. Firstly, cell samples prepared after circumcision children and nano-composite scaffolds by electrospinning driven current. Cell planted cultured to prepare mimicking extracellular matrix. The surgical sutures embedded injured motor ligaments. In ante...

objective(s): the aim of this study was to observe the influence of phytoestrogen α-zearalanol on ovariectomy-induced postmenopausal osteoporosis in rats. materials and methods:40 sd female rats were randomly divided into four groups: sham group, ovx group (ovariectomized and fed estrogen), α-zearalanol group (ovariectomized and fed α-zearalanol) and untreated group (ovariectomized). three week...

PURPOSE The level of the implant above the marginal bone and flap design have an effect on the bone resorption during the healing period. The aim of this study is to detect the relationship between the level of the implant at the implant placement and the bone level at the healing period in the mesial and distal side of implants placed with flapless (FL) and full-thickness flap (FT) methods. ...