The induction of callus formation in cultured buds of Shamouti orange (Citrus sinensis [L.] Osbeck) by abscisic acid (ABA) is a multiphasic process. (Altman, and Goren 1974 Physiol Plant 32: 55.) A study of the mediation by ethylene on this effect of ABA was undertaken. It was found that: (a) ethylene and (2-chloroethyl) phosphonic acid, as well as ABA, induced callus formation; (b) callus indu...

The aim of the present study was to analyze the mechanism by which nerve growth factor (NGF) promotes callus formation in mice with tibial fracture. NGF transgenic homozygotic mice and NGF wild homozygotic mice were selected to construct non-stabilized fracture model of tibia. The mice were sacrificed on days 7, 14 and 21, respectively, and each group had a sample with 8 mice at each point in t...

OBJECTIVES Ubiquitin E3 ligase-mediated protein degradation regulates osteoblast function. Itch, an E3 ligase, affects numerous cell functions by regulating ubiquitination and proteasomal degradation of related proteins. However, the Itch-related cellular and molecular mechanisms by which osteoblast differentiation and function are elevated during bone fracture repair are as yet unknown. METH...

The development of software applications that assist the radiographic evaluation of fracture healing could advance clinical diagnosis and expedite the identification of effective treatment strategies. A radiographic feature regularly used as an outcome measure for basic and clinical fracture healing research is new bone growth, or fracture callus. In this study, we developed OrthoRead, a portab...

Ultrasound is useful in demonstrating bone mineral density of regenerating osseous tissue as well as structural alterations. A proposed ultrasound method, which included ultrasonography and acoustic parameters measurement, was employed to evaluate its efficacy in monitoring the bone callus changes in a rabbit tibial distraction osteogenesis (DO) model. The findings demonstrated that ultrasonogr...

In the present study, antioxidant activities of the three plant parts (stem, leaf and callus) were investigated. Ethanolic extracts of stem, leaf and callus powder was characterized by the method described by (Hatano et al., 1988) in which stable 1, 1-diphenyl-2-picrylhydrazyl (DPPH) free radical solution was used. In this paper, it is found that all of the in vitro and in vivo extracts have re...

pseudohandelia tzvel. belongs to the asteraceae family with only one species. it is endemic to khorasan province in iran. having partially big and beautiful inflorescences make it a proper choice in urban green space especially in case of mass culture. in this research, to investigate possibility of micro propagation of this plant two separate experiments were designed. to obtain non contaminat...

Hypericum perforatum L. (St. Johns’ wort) is the most commercially important species of the genus Hypericum and contains a wide range of components including naphthodianthrones, phloroglucinols, tannins, xanthones, phenolic acids and essential oil. In order to establish an efficient protocol for regeneration, the effects of explant type and plant growth regulators on direct and indirect shoot r...

Anthocyanins are natural pigments which have various health benefits and are potential candidate for use in the pharmaceutical industries. The fruits and vegetables containing anthocyanins have proved to be beneficial for humans due to their antioxidant activity. For the present study purple brinjal (Solanum melongena L.) is selected as the anthocyanin source. The type of anthocyanins in the pe...