نتایج جستجو برای: strontium compounds

تعداد نتایج: 233356  

2016
Mazeyar Parvinzadeh Gashti Manuela Stir Jürg Hulliger

Recent research has focused on the crystal growth of strontium phosphates via different methods due to the bioactivity and biocompatibility of these materials with bone tissue. Here, we use a biomimetic method to synthesize strontium hydrogen phosphate/gelatin composites via single diffusion in gelatin. We compare the composite crystals with analytical-grade strontium hydrogen phosphate using i...

2012
D. Kundu

A simple complexometric method for stepwise determination of lanthanum, strontium and manganese in Lanthanum-Strontium-Manganate (LSM) has been worked out. The method involves joint titration of the elements with EDTA at pH 10.0 followed by selective precipitation of strontium as sulphate from a homogenous solution involving displacement reaction between EDTA complex of strontium and ZnSO4. The...

Journal: :Nanoscale 2015
Sachin Kumar Kaushik Chatterjee

The objective of this work was to prepare hybrid nanoparticles of graphene sheets decorated with strontium metallic nanoparticles and demonstrate their advantages in bone tissue engineering. Strontium-decorated reduced graphene oxide (RGO_Sr) hybrid nanoparticles were synthesized by the facile reduction of graphene oxide and strontium nitrate. X-ray diffraction, transmission electron microscopy...

Journal: :Zygote 2005
Walt Yamazaki Christina Ramires Ferreira Simone Cristina Méo Cláudia Lima Verde Leal Flávio Vieira Meirelles Joaquim Mansano Garcia

As an important step in the nuclear transfer (NT) procedure, we evaluated the effect of three different treatments for oocyte activation on the in vitro and in vivo developmental capacity of bovine reconstructed embryos: (1) strontium, which has been successfully used in mice but not yet tested in cattle; (2) ionomycin and 6-dimethylaminopurine (6-DMAP), a standard treatment used in cattle; (3)...

Journal: :The Kobe journal of medical sciences 2007
Monnipha Sila-Asna Ahnond Bunyaratvej Sakan Maeda Hiromichi Kitaguchi Narong Bunyaratavej

Osteoblastic differentiation from human mesenchymal stem cell (hMSCs) is an important step of bone formation. We studied the in vitro induction of hMSCs by using strontium ranelate, a natural trace amount in water, food and human skeleton. The mRNA synthesis of various osteoblast specific genes was assessed by means of reverse transcription polymerase chain reaction (RT-PCR). In the hMSCs cultu...

2014
Lise Harvig Karin Margarita Frei T. Douglas Price Niels Lynnerup

Dental enamel is currently of high informative value in studies concerning childhood origin and human mobility because the strontium isotope ratio in human dental enamel is indicative of geographical origin. However, many prehistoric burials involve cremation and although strontium retains its original biological isotopic composition, even when exposed to very high temperatures, intact dental e...

2010
Roberto Cesareo Clemente Napolitano Mario Iozzino

Osteoporosis is a progressive and debilitating disease characterized by a massive bone loss with a deterioration of bone tissues, and a propensity for a fragility fracture. Strontium ranelate is the first antiosteoporotic treatment that has dual mode of action and simultaneously increases bone formation, while decreasing bone resorption, thus rebalancing bone turnover formation. Strontium ranel...

2000
Randell L. Mills Mark Nansteel Ying Lu

We report the observation of intense extreme ultraviolet (EUV) emission from incandescently heated atomic hydrogen and atomized strontium. Typically the emission of extreme ultraviolet light from hydrogen gas is achieved via a discharge at high voltage, a high power inductively coupled plasma, or a plasma created and heated to extreme temperatures by RF coupling (e.g. > 10 6 K) with confinement...

Journal: :The New England journal of medicine 2004
Ghada El-Hajj Fuleihan

Osteoporosis was originally described in literature and art hundreds of years ago. Our ability to treat this disease lay dormant for centuries, but in the past 10 years, clinical trials have improved treatment options and efficacy. In this issue of the Journal , Meunier et al. 1 report on their study of the safety and effectiveness of strontium ranelate as a putative, novel therapy for osteopor...

Journal: :Biomaterials 2010
Eileen Gentleman Yann C Fredholm Gavin Jell Nasrin Lotfibakhshaiesh Matthew D O'Donnell Robert G Hill Molly M Stevens

Bioactive glasses (BG) which contain strontium have the potential to combine the known bone regenerative properties of BG with the anabolic and anti-catabolic effects of strontium cations. Here we created a BG series (SiO(2)-P(2)O(5)-Na(2)O-CaO) in which 0-100% of the calcium was substituted by strontium and tested their effects on osteoblasts and osteoclasts in vitro. We show that ions release...

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