Abstract: A cholecystokinin (CCK) secretion-promoting peptide targeting a calcium-sensing receptor (CaSR), and a preparation method and use thereof are provided. The CCK secretion-promoting peptide targeting a CaSR is a QGDVVALPA active peptide and has an amino acid sequence as follows: Gln-Gly-Asp-Val-Val-Ala-Leu-Pro-Ala. Compared with the prior art, the active peptide is allowed to be artificially synthesized through a chemical solid phase synthesis method, and is allowed to be obtained by an enzymatic hydrolysis of oat protein, separation and purification. The active peptide is allowed to target the CaSR of an intestinal endocrine cell membrane to activate a Gq signal pathway, thereby further increasing an intracellular calcium ion concentration to significantly promote secretion of CCK by an intestinal endocrine cell; and moreover, the active peptide has the advantages of safety, no toxic side effect, tolerance to digestive enzyme hydrolysis of a gastrointestinal tract, easy absorption, etc.

Abstract: Provided are methods and systems for selectively communicating data between a source device and one or more sink devices. The method includes generating a selection signal based on received configuration data associated with the sink device(s). Based at least in part on the selection signal, the data can be caused to be selectively provided to the sink device(s) by the first device. The data includes Universal Serial Bus (USB) protocol data, uncompressed high definition media data, or a combination thereof. In forward connections, the data may be provided variously at one of the following rates: 2.7 Gbps, 5.4 Gbps, 3.375 Gbps, and 6.75 Gbps. At 6.75 Gbps, the data may include a combination of USB data and audio/video data (having high resolution high definition video) or just standalone audio/video data (having higher resolution high definition video). In backward connections, the data includes USB data and can be transferred at either 2.7 Gbps and 3.375 Gbps.