Two novel polysaccharides from rhizomes of Cibotium barometz promote bone formation via activating the BMP2/SMAD1 signaling pathway in MC3T3-E1 cells
Publication date: Available online 10 December 2019Source: Carbohydrate PolymersAuthor(s): Dong Huang, Xin Hou, Dawei Zhang, Qian Zhang, Chunyan YanAbstractCibotium barometz, an important traditional Chinese medicine, is used in strengthening bones and tendons. We found that C. barometz crude polysaccharides (CB70) could alleviate bone loss and markedly improve the biomechanical properties of OVX rats. Thus, to clarify biological active ingredient(s) of CB70, two homogeneous polysaccharides (CBP70-1-1 and CBP70-1-2) were purified from CB70. A combination of monosaccharide composition, FT-IR, GC–MS and NMR analysis indicated that CBP70-1-1 was composed of →6)-D-Galp-(1→, D-Glcp-(1→, →3,6)-D-Manp-(1→, →4)-D-Glcp-(1→ and →6)-D-Glcp-(1→ with relative molecular weights of 12724 Da, and CBP70-1-2 was composed of →4)-D-Glcp-(1→, D-Glcp-(1→, →3,6)-D-Manp-(1→, →6)-D-Galp-(1→, →4,6)-D-Glcp-(1→ and →3)-L-Araf-(1→ with relative molecular weights of 3611 Da. Morphological analyses revealed that CBP70-1-1 and CBP70-1-2 appeared as a sheet that were irregular in size and shape, while the surface of CBP70-1-1 was full of sharp protuberances and CBP70-1-2 was smooth. Furthermore, the effects of CBP70-1-1 and CBP70-1-2 on the proliferation, differentiation and mineralization of mouse pre-osteoblastic MC3T3-E1 cells were assessed via CCK-8 assay, alkaline phosphatase activity ...
Publication date: January 2020Source: Biometric Technology Today, Volume 2020, Issue 1Author(s): Tim Ring
Publication date: January 2020Source: Biometric Technology Today, Volume 2020, Issue 1Author(s): US NIST (the National Institute of Standards and Technology) has released three new biometric databases – featuring fingerprints, facial photographs and iris scans – designed to help researchers reduce the error rates of biometric systems.
Publication date: January 2020Source: Biometric Technology Today, Volume 2020, Issue 1Author(s): Facial recognition terminals in sites ranging from Amsterdam's Schiphol airport to retail stores in Asia were easily spoofed by face masks and simple photos, in tests run by AI solutions provider Kneron.
Publication date: January 2020Source: Biometric Technology Today, Volume 2020, Issue 1Author(s): The UK's NatWest Bank is trialling a new, compact biometric key fob that can be used by customers to make contactless payments worth up to £100, without the need for a mobile phone or bank card.