Salivary alpha amylase as marker for adrenergic activity during stress: Effect of betablockade
Free secretion Hydrocortone is a longtime non-invasive marker of neural structure pituitary adrenal (HPA) axis activity. In distinction, such a well-characterized secretion marker for activity of the sympatho-adrenal medullar (SAM) system continues to be missing. together potential candidate secretion alpha enzyme (sAA) has been urged. In humans will increase in sAA levels are discovered in response to physiological and psychological stress. this study geared toward exploring the results of a pharmacologic manipulation (betablockade) on sAA within the context of a nerve-wracking fMRI experiment on emotional information science. [1]
Salivary alpha amylase–cortisol asymmetry in maltreated youth
Maltreatment represents a serious agent within the lives of the many youth. Given the renowned effects of stress exposure on future functioning of biological stress response systems, researchers are fascinated by the consequences of abuse on the functioning of those systems. Experimental studies reveal that previous exposure to fret affects the symmetry between parts of the physiological stress response to future stress. this study examined spatiality between secretion alpha enzyme (sAA), a sympathetic indicator, and adrenal cortical steroid reactivity to a social agent among ill-treated and comparison youth age nine to fourteen years. [2]
Response surface methodology for the optimization of alpha amylase production by Bacillus amyloliquefaciens
The aim of this work was to optimize the cultural and production parameters through the applied mathematics approach for the synthesis of alpha enzyme by B amyloliquefaciens in submerged fermentation (SmF) employing a combination of wheat bran and oil cake (1:1) because the substrate. the method parameters influencing the catalyst production were known mistreatment Plackett–Burman style. Among the assorted variables screened, the substrate concentration, period of time and CaCl2 concentration were most important. [3]
Nesterenkonia sp. strain F, a halophilic bacterium producing acetone, butanol, and ethanol under aerobic conditions
The moderately halophilic microorganism Nesterenkonia sp. strain F, that was isolated from Aran-Bidgol Lake (Iran), has the power to supply solvent, butanol, and grain alcohol (ABE) in addition as carboxylic acid and saturated fatty acid acids underneath aerobic and anaerobic conditions. This result’s the primary report of ABE production with a wild organism from a family apart from Clostridia and additionally the first halophilic species shown to supply butyl alcohol underneath aerobic cultivation. The cultivation of Nesterenkonia sp. strain F underneath anaerobic conditions with 50 g/l of aldohexose for seventy two h resulted within the production of 105 mg/l of butyl alcohol, 122 mg/l of solvent, 0.2 g/l of carboxylic acid, and 2.5 g/l of saturated fatty acid. what is more, the strain was cultivated on media with totally different aldohexose concentrations (20, 50, and 80 g/l) underneath aerobic and anaerobic conditions. [4]
An Alpha Amylase Like Protein from Plantains
Carbohydrates and lignocellulose biomass ar the main feedstock for the bioethanol production. The process of starch to bioethanol could be a difficult method that needs many agents and ranging conditions. The starch phase change and saccharification ar key process steps within the bioethanol business. The rate-limiting α-amylase plays a crucial role because of its endo-glycosidic activity. α-amylase endo-glycosidic action on long glucan chains could also be rate limiting in starch. the aim of this study is to purify associate degree alpha enzyme from plantains. [5]
Reference
[1] van Stegeren, A., Rohleder, N., Everaerd, W. and Wolf, O.T., 2006. Salivary alpha amylase as marker for adrenergic activity during stress: effect of betablockade. Psychoneuroendocrinology, 31(1), pp.137-141. (Web Link)
[2] Gordis, E.B., Granger, D.A., Susman, E.J. and Trickett, P.K., 2008. Salivary alpha amylase–cortisol asymmetry in maltreated youth. Hormones and behavior, 53(1), pp.96-103. (Web Link)
[3] Gangadharan, D., Sivaramakrishnan, S., Nampoothiri, K.M., Sukumaran, R.K. and Pandey, A., 2008. Response surface methodology for the optimization of alpha amylase production by Bacillus amyloliquefaciens. Bioresource technology, 99(11), pp.4597-4602. (Web Link)
[4] Nesterenkonia sp. strain F, a halophilic bacterium producing acetone, butanol, and ethanol under aerobic conditions
Hamid Amiri, Reza Azarbaijani, Laleh Parsa Yeganeh, Abolhassan Shahzadeh Fazeli, Meisam Tabatabaei, Ghasem Hosseini Salekdeh & Keikhosro Karimi
Scientific Reports volume 6, Article number: 18408 (2016) (Web Link)
[5] Khalil Adam, I., Abdulkadir Imam, A. and Aminu Bello, B. (2017) “An Alpha Amylase Like Protein from Plantains”, Journal of Advances in Biology & Biotechnology, 14(4), pp. 1-8. doi: 10.9734/JABB/2017/35260. (Web Link)