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Socioemotional selectivity theory (SST; developed by Stanford psychologist Laura L. Carstensen) is a life-span theory of motivation. The theory maintains that as time horizons shrink, as they typically do with age, people become increasingly selective, investing greater resources in emotionally meaningful goals and activities.
Somatostatin is encoded by a CRE and is very susceptible to gene promoter region activation by transcription factor CREB. [1] There are five known somatostatin receptors: [2] SST 1 ; SST 2 ; SST 3 ; SST 4 ; SST 5 ; All are G protein-coupled seven transmembrane receptors.
The gene for somatostatin receptor 2, SSTR2 for short, is responsible for making a receptor for the signalling peptide, somatostatin (SST). Production occurs in the central nervous system, especially the hypothalamus, as well as the digestive system, and pancreas. [16] SSTR2 is a receptor for somatostatin-14 and -28 respectively.
Somatostatin is secreted by delta cells at several locations in the digestive system, namely the pyloric antrum, the duodenum and the pancreatic islets. [14]Somatostatin released in the pyloric antrum travels via the portal venous system to the heart, then enters the systemic circulation to reach the locations where it will exert its inhibitory effects.
SST has been shown to improve levels of assertiveness (positive and negative) in both men and women. Additionally, SST can focus on receiving skills (e.g. accurately perceiving problem situations), processing skills (e.g. considering several response alternatives), and sending skills (delivering appropriate verbal and non-verbal responses).
Sexual strategies theory (SST) is an evolutionary theory of human mating created by David Buss and David Schmitt in 1993. It defines the set of mating strategies that humans pursue, the adaptive problems that men and women face when pursuing these strategies, and the evolved solutions to these mating problems. [1]
Somatostatin receptor type 5 is a protein that in humans is encoded by the SSTR5 gene. [5] Somatostatin acts at many sites to inhibit the release of many hormones and other secretory proteins. The biological effects of somatostatin are probably mediated by a family of G protein-coupled receptors that are expressed in a tissue-specific manner.
Molecular genetics: This method is used to analyze a gene-trait link, by measuring the structure and function of genes in the brain. [15] The use of molecular genetics in biology-based personality research is expected to grow. [7] Molecular assays: This method is used to analyze the amount of psychoactive substances, such as hormones and ...