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Sawyers C, Sheerin C, Moore AA, Neigh G, Hettema JM, Roberson-Nay R. Genetic and environmental influences on alpha amylase stress reactivity and shared genetic covariation with cortisol. Psychoneuroendocrinology 2024; 161:106922. [PMID: 38101095 PMCID: PMC10842877 DOI: 10.1016/j.psyneuen.2023.106922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/30/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023]
Abstract
Salivary alpha amylase (sAA) is a common measure of stress reactivity, primarily reflecting sympathetic nervous system activity. Salivary cortisol is also a reliable, frequently used biomarker of stress and reflects the hypothalamic-pituitary-adrenal (HPA) axis response. This study examined heritability across varying metrics of sAA in response to a social evaluative stressor, the Trier Social Stress Test (TSST). The goal of this study was to estimate genetic and environmental influences on measurements of sAA stress reactivity. Moreover, we evaluated the shared genetic covariation between sAA and cortisol. Participants included twins aged 15-20 years (54% female). We measured alpha amylase and cortisol reactivity to the TSST via serial salivary cortisol samples collected pre- and post-TSST. Modest to moderate heritability estimates (11-64%) were observed across measures purported to capture alpha amylase stress reactivity (peak, area under the curve, baseline-to-peak change). Findings also indicate that sAA baseline and peak are primarily influenced by a shared genetic factor. There was no evidence of shared genetic influences between sAA and cortisol. These findings suggest the genetic control of the HPA and Sympathetic Adreno-Medullar axis are genetically independent of one another despite both playing a role in response to stressors.
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Affiliation(s)
- Chelsea Sawyers
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, USA; Department of Psychiatry, Virginia Commonwealth University, USA.
| | - Christina Sheerin
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, USA; Department of Psychiatry, Virginia Commonwealth University, USA
| | - Ashlee A Moore
- Department of Psychology, State University of New York at Oswego, USA
| | - Gretchen Neigh
- Department of Anatomy and Neurobiology, Virginia Commonwealth University, USA
| | - John M Hettema
- Department of Psychiatry, Texas A&M Health Sciences Center, USA
| | - Roxann Roberson-Nay
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, USA; Department of Psychiatry, Virginia Commonwealth University, USA
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Kumar H, Mandal S, Yadav R, Gupta S, Meena H, Kadu M, Kudawla R, Sharma P, Kaur IP, Maiti S, Ipsen JH, Bhatia T. Bottom-up approach to explore alpha-amylase assisted membrane remodelling. Chem Phys Lipids 2024; 259:105374. [PMID: 38176612 DOI: 10.1016/j.chemphyslip.2023.105374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/19/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024]
Abstract
Soluble alpha-amylases play an important role in the catabolism of polysaccharides. In this work, we show that the malt α -amylase can interact with the lipid membrane and further alter its mechanical properties. Vesicle fluctuation spectroscopy is used for quantitative measurement of the membrane bending rigidity of phosphatidylcholines lipid vesicles from the shape fluctuation based on the whole contour of Giant Unilamellar Vesicles (GUVs). The bending rigidity of the 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine lipid vesicles in water increases significantly with the presence of 0.14 micromolar alpha-amylase (AA) in the exterior solution. It appears that the enzyme present in the external solution interacts with the outer layer of the bilayer membrane, leading to an asymmetry of the solution on either side of the bilayer membrane and altering its elasticity. At AA concentration of 1.5 micromolars and above, changes in the morphology of the GUV membrane are observed. The interaction between AA in the external solution and the external leaflet causes the bilayer membrane to curve spontaneously, leading to the formation of outbuds, giving a positive spontaneous curvature of C0 ≤ 0.05 μm-1 at ≈ 1 mg / ml of the AA concentration. We validate and characterize its concentration-dependent role in stabilizing the membrane curvature. Our findings indicate that the involvement of the enzyme, depending on the concentration, can have a considerable effect on the mechanical characteristics of the membrane.
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Affiliation(s)
- Harshit Kumar
- Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - Sayar Mandal
- Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - Reena Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - Suhasi Gupta
- Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - Hemraj Meena
- Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - Mayur Kadu
- Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - Rajni Kudawla
- Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - Pratibha Sharma
- University Institute of Pharmaceutical Sciences, Punjab University, Sector 14, Chandigarh 160014, Punjab, India
| | - Indu Pal Kaur
- University Institute of Pharmaceutical Sciences, Punjab University, Sector 14, Chandigarh 160014, Punjab, India
| | - Subhabrata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India
| | - John H Ipsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej, Odense, 5230 M, Denmark.
| | - Tripta Bhatia
- Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, Manauli, SAS Nagar, Punjab 140306, India.
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Galagali A, Patil VS, Hiremath K, Sampat GH, Patil R, Virge R, Harish DR, Hedge HV, Roy S. Investigation of alpha amylase inhibitors from Bidens pilosa L. by in silico and in vitro studies. In Silico Pharmacol 2024; 12:9. [PMID: 38327875 PMCID: PMC10844173 DOI: 10.1007/s40203-023-00187-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/27/2023] [Indexed: 02/09/2024] Open
Abstract
Bidens pilosa L. has been traditionally used as an anti-diabetic herbal medicine; however, its mechanism of action remains elusive. In this study, the potential role of B. pilosa compounds on alpha-amylase inhibition and regulation of multiple pathways was investigated via computational and experimental studies. The phytocompounds were retrieved from plant databases and published literature. The druggability profile of these compounds was predicted using MolSoft. The probable targets of these phytocompounds were predicted using BindingDB (similarity index ≥ 0.7). Further, compound-gene set-pathway and functional enrichment analysis were performed using STRING and KEGG pathway databases. The network between compound-protein-pathway was constructed using Cytoscape. Molecular docking was performed using AutoDock Vina, executed through the POAP pipeline. The stability of the best docked complex was subjected to all-atom molecular dynamics (MD) simulation for 100 ns to investigate their structural stabilities and intermolecular interactions using GROMACS software. Finally, B. pilosa hydroalcoholic extract was subjected to LC-MS and tested for dose- and time-dependent alpha-amylase inhibitory activity. Out of 31 bioactive compounds, 13 were predicted to modulate the human pancreatic alpha-amylase (AMY2A) and 12 pathways associated with diabetes mellitus. PI3K-Akt signaling pathway (hsa04151) scored the lowest false discovery rate by triggering 15 genes. Further intermolecular interaction analysis of the docked complex revealed that Brassidin had the highest active site interaction and lowest binding energy compared to standard acarbose, and MD reveals the formation of a stable complex throughout 100 ns production run. LC-MS analysis revealed the presence of 13 compounds (targeting AMY2A) in B. pilosa hydroalcoholic extract, which showed potent AMY2A inhibition by in vitro studies that corroborate in silico findings for its anti-diabetic activity. Based on these findings, enriched fractions/pure compounds inhibitory activity that can be performed in future for drug discovery. Supplementary Information The online version contains supplementary material available at 10.1007/s40203-023-00187-9.
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Affiliation(s)
- Akshay Galagali
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
- Dr. Prabhakar Kore Basic Science Research Centre, KLE Academy of Higher Education and Research (Deemed-to-be-University), Nehru Nagar, Belagavi, Karnataka 590010 India
| | - Vishal S. Patil
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
| | - Kashinath Hiremath
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
| | - Ganesh H. Sampat
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
| | - Rajlaxmi Patil
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
- Dr. Prabhakar Kore Basic Science Research Centre, KLE Academy of Higher Education and Research (Deemed-to-be-University), Nehru Nagar, Belagavi, Karnataka 590010 India
| | - Rajashri Virge
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
| | | | - Harsha V. Hedge
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
| | - Subarna Roy
- ICMR-National Institute of Traditional Medicine, Belagavi, Karnataka 590010 India
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Ali D, Abdal H, Alsaeed M. Comparison of self-rated pain and salivary alpha-amylase and cortisol levels during early stages of fixed orthodontic and clear aligner therapy. Acta Odontol Scand 2023; 81:627-632. [PMID: 37466389 DOI: 10.1080/00016357.2023.2236214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/30/2023] [Accepted: 07/08/2023] [Indexed: 07/20/2023]
Abstract
OBJECTIVES To compare self-rated orthodontic pain (OP) and whole salivary alpha-amylase (αA) and cortisol levels (CL) during early stages of fixed orthodontic and clear aligner therapy (CAT). METHODS In groups 1 and 2, malocclusions were treated using fixed orthodontic appliances and CAT, respectively. In Group-3, individuals had normal occlusion and had never undergone orthodontic therapy. Self-rated OP was assessed using the visual-analogue-scale at baseline (T0); after 24-hours (T1) of appliance activation; and after 30 days (T2). Unstimulated whole saliva was collected and αA and CL were measured using enzyme-linked immunosorbent assay. p < .01 was considered statistically significant. RESULTS Twenty-four (Group-1), 24(Group-2) and 25 (Group-3) patients were included. In groups 1 and 2, participants had Class-I malocclusion with anterior-crowding in both arches. At baseline (T0) none of the participants reported pain on mastication. In groups 1 (p < .01) and 2 (p < .01), OP was higher at T1 than T2. In groups 1 and 2, αA and CL were higher at T1 (p < .01) than T0 and T2. At T1 and T2, salivary αA and CL were higher in groups 1 (p < .01) and 2 (p < .01) than Group-3. In groups 1 and 2, a significant correlation was recorded between OP and αA (p < .01) and CL (p < .01) at T1 interval. CONCLUSION Self-rated OP and salivary αA and CL during the early stages of fixed OT and CAT are similar. Whole salivary αA and CL and OP and are high during the first 24 hours of fixed OT and CAT activation.
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Affiliation(s)
- Dena Ali
- Department of General Dental Practice, Kuwait University, Safat, Kuwait
| | - Hassan Abdal
- Ministry of Health, Department of Orthodontics, Aladan Dental Specialty Center, Ahmadi Governorate, Kuwait
| | - Mubarak Alsaeed
- Aline Dental Center, Hayaween center, Aljahra Governorate, Kuwait
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Saygili I. Barley yield and malt quality affected by fall and spring planting under rainfed conditions. PeerJ 2023; 11:e15802. [PMID: 37601258 PMCID: PMC10434083 DOI: 10.7717/peerj.15802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 07/07/2023] [Indexed: 08/22/2023] Open
Abstract
Background As a result of the changing climate characteristics, it is necessary to reevaluate the planting time for crop plants. The aim of the present study was to determine the quality characteristics of malting barley cultivars in fall and spring plantings. Methods Sixteen malting barley cultivars were used. Two fall-planted and two spring-planted trials were conducted in two consecutive years. The field trials were carried out in a randomized complete block design with four replications in Tokat province of Turkey under rainfed conditions. Results Grain yields varied between 4.38 and 5.71 t/ha in fall-planted trials and between 3.12 and 4.89 t/ha in spring-planted trials. Malt extracts were between 77.0% and 78.0% kg in fall-planted trials and between 73.9% and 76.9% in spring-planted trials. Alpha amylase activities ranged from 77.9 to 81.4 Ceralpha unit (CU)/g in fall-planted trials and from 80.8 to 100.9 CU/g in spring-planted trials. Diastatic power ranged from 194.5 to 331.1 Windisch-Kolbach unit (°WK) in fall-planted trials and from 129.0 to 259.8 °WK in spring-planted trials. GGE biplot analysis indicated that winter barley cultivar Durusu and facultative barley cultivar Ince-04 were the best with consistent grain yields while Ince-04 was the best with stable malt extract across the trials. In scatter plot graphics, winter barley cultivars Durusu, Aydanhanim, Yildiz and facultative Ince-04 had superior performance in fall-plantings for grain yield and malt extract. In spring planting, facultative Ince-04 had higher performance than those of other cultivars. In spring plantings, facultative or winter barley cultivars that do not have strong vernalization requirement had better yield and malt quality. Appropriate planting time and cultivars can allow a better use of available water in malt barley production under rainfed conditions. Lastly, instead of evaluating the grain yield or malt quality alone, it would be best to evaluate the target product (malt extract percentage) obtained from a particular region, process, or production methodology.
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Affiliation(s)
- Ibrahim Saygili
- Field Crops Department, Tokat Gaziosmanpasa University, Tokat, Turkey
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Bell AR, Grainger MNC. Accelerated loss of diastase in mānuka honey: Investigation of mānuka specific compounds. Food Chem 2023; 426:136614. [PMID: 37329801 DOI: 10.1016/j.foodchem.2023.136614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 04/19/2023] [Accepted: 06/10/2023] [Indexed: 06/19/2023]
Abstract
Diastase is used internationally as a quality monitor for excessive heat treatment and prolonged storage of honey; honey must contain an activity of at least 8 diastase numbers (DN) for it to be considered export quality. Freshly harvested mānuka honey can have diastase activity close to the export threshold of 8 DN without excess heating, increasing susceptibility for export failure. This research investigated the effect of compounds unique to or high in concentration in mānuka honey on diastase activity. Investigation of the effect of methylglyoxal, dihydroxyacetone, 2-methoxybenzoic acid, 3-phenyllatic acid, 4-hydroxyphenyllactic acid and 2'-methoxyacetophenone on diastase activity was carried out. Mānuka honey was stored at 20 and 27 °C and clover honey spiked with compounds of interest were stored at 20, 27 and 34 °C and monitored overtime. Methylglyoxal and 3-phenyllactic acid were found to accelerate the loss of diastase above the loss normally observed with time and elevated temperature.
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Affiliation(s)
- Amber R Bell
- School of Science, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
| | - Megan N C Grainger
- School of Science, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand.
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Sommer A, Fischer R, Borges U, Laborde S, Achtzehn S, Liepelt R. The effect of transcutaneous auricular vagus nerve stimulation (taVNS) on cognitive control in multitasking. Neuropsychologia 2023:108614. [PMID: 37295553 DOI: 10.1016/j.neuropsychologia.2023.108614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 04/28/2023] [Accepted: 06/05/2023] [Indexed: 06/12/2023]
Abstract
Current research in brain stimulation suggests transcutaneous auricular vagus nerve stimulation (taVNS) as a promising tool to modulate cognitive functions in healthy populations, such as attention, memory, and executive functions. Empirical evidence in single task contexts, suggests that taVNS promotes holistic task processing, which strengthens the integration of multiple stimulus features in task processing. However, it is unclear how taVNS might affect performance in multitasking, where the integration of multiple stimuli leads to an overlap in stimulus response translation processes, increasing the risk of between-task interference (crosstalk). In a single-blinded, sham-controlled, within-subject design, participants underwent taVNS while performing a dual task. To assess the effects of taVNS, behavioral (reaction times), physiological (heart-rate variability, salivary alpha-amylase), and subjective psychological variables (e.g., arousal) were recorded over three cognitive test blocks. Our results revealed no overall significant effect of taVNS on physiological and subjective psychological variables. However, the results showed a significant increase in between-task interference under taVNS in the first test block, but not in the subsequent test blocks. Our findings therefore suggest that taVNS increased integrative processing of both tasks early during active stimulation.
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Affiliation(s)
- Aldo Sommer
- University of Hagen (FernUniversität in Hagen), Hagen, Germany; Department of Exercise Physiology, German Sport University Cologne, Cologne, Germany.
| | - Rico Fischer
- Department of Psychology, University of Greifswald, Greifswald, Germany
| | - Uirassu Borges
- Institute of Psychology, German Sport University Cologne, Cologne, Germany
| | - Sylvain Laborde
- Institute of Psychology, German Sport University Cologne, Cologne, Germany; Normandie Université, UFR STAPS, EA 4260 CESAMS, Caen, France
| | - Silvia Achtzehn
- Institute of Cardiology and Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Roman Liepelt
- University of Hagen (FernUniversität in Hagen), Hagen, Germany
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Jayabal D, Jayanthi S, Thirumalaisamy R, Karthika R, Iqbal MN. Comparative anti-Diabetic potential of phytocompounds from Dr. Duke's phytochemical and ethnobotanical database and standard antidiabetic drugs against diabetes hyperglycemic target proteins: an in silico validation. J Biomol Struct Dyn 2023; 41:15137-15149. [PMID: 37011006 DOI: 10.1080/07391102.2023.2187231] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/23/2023] [Indexed: 04/04/2023]
Abstract
In the current investigation, the antidiabetic potential of 40 phytocompounds from Dr. Dukes phytochemical and ethanobotanical database and three antidiabetic pharmaceuticals from the market comparatively validated against hyperglycemic target proteins. Silymarin, proanthocyanidins, merremoside, rutin, mangiferin-7-O-beta-glucoside, and gymnemic acid exhibited good binding affinity toward protein targets of diabetes among the 40 phytocompounds from Dr.Dukes database over three chosen antidiabetic pharmaceutical compounds. Further these phytocompounds and sitagliptin are validated for its ADMET and bioactivity score to screen its pharmacological and pharmacokinetics properties. Silymarin, proanthocyanidins, rutin along with sitagliptin screened for DFT analysis found that phytocompounds have great Homo-Lumo orbital energies over commercial pharmaceutical sitagliptin. Finally, four complexes of alpha amylase-silymarin, alpha amylase-sitagliptin, aldose reductase-proanthocyanidins, and aldose reductase-sitagliptin screened for MD simulation and MMGBSA analysis, results shown that the phytocompounds silymarin and proanthocyanidins have strong affinities for binding to the binding pockets of alpha amylase and aldose reductase respectively over antidiabetic pharmaceuticals. Our current study proven proanthocyanidins and silymarin act as novel antidiabetic compounds toward diabetic target protein but it require clinical trial to evaluate its clinical pertinence toward diabetic target proteins.Communicated by Ramaswamy Sarma.
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Affiliation(s)
- D Jayabal
- Department of Biochemistry, Periyar University, Salem, Tamil Nadu, India
- Department of Biochemistry, Sri Ganesh College of Arts and Science, Salem, Tamil Nadu, India
| | - S Jayanthi
- Department of Biochemistry, Shri Sakthikailash Women's College, Salem, Tamil Nadu, India
| | - R Thirumalaisamy
- Department of Biotechnology, Sona College of Arts & Science, Salem, Tamil Nadu, India
| | - R Karthika
- PG and Research Department of Biotechnology, Mahendra Arts and Science College, Namakkal, Tamil Nadu, India
| | - Muhammad Nasir Iqbal
- Department of Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
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Meier M, Haub K, Schramm ML, Hamma M, Bentele UU, Dimitroff SJ, Gärtner R, Denk BF, Benz ABE, Unternaehrer E, Pruessner JC. Validation of an online version of the trier social stress test in adult men and women. Psychoneuroendocrinology 2022; 142:105818. [PMID: 35662007 DOI: 10.1016/j.psyneuen.2022.105818] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/25/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
The Trier Social Stress Test (TSST) is a reliable and efficient protocol to induce acute psychosocial stress in the laboratory. If circumstances do not allow in-person assessments, an online version of the TSST could create more flexible research opportunities. To date, studies have confirmed subjective and autonomic stress responses to online TSST protocols. In this preregistered study (https://osf.io/u57aj), we focused on the effect of a TSST online for adults (TSST-OA) on cortisol and alpha amylase levels, and pleasure and arousal ratings. As cortisol stress reactivity is mediated by sex, we further compared men and women. We hypothesized significant increases in cortisol, alpha amylase and arousal, and a decrease in pleasure in response to the TSST-OA. Also, we expected stronger cortisol responses in males as compared with females, as in the laboratory TSST. N = 48 adults (56% female, meanage=23.02 years, SD=3.19) participated in the study. Saliva sampling devices were sent to participants' home before testing sessions, during which the experimenter, a mixed-sex panel, and the participant joined a video call. Participants underwent the TSST-OA and overall provided five saliva samples for cortisol and alpha amylase detection. Pleasure and arousal ratings and psychometric questionnaires were also completed online. As hypothesized, the TSST-OA significantly increased cortisol, alpha amylase, and arousal levels, while it decreased pleasure. Moreover, cortisol responses were significantly stronger in males as compared to females. 64% of subjects were classified as responders (cortisol rise>1.5nmol/l). The TSST-OA successfully induced psychophysiological stress in adults. Our protocol offers new possibilities to study stress outside of the laboratory.
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Affiliation(s)
- Maria Meier
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany.
| | - Kristina Haub
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Marie-Luise Schramm
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Marc Hamma
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Ulrike U Bentele
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Stephanie J Dimitroff
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Raphaela Gärtner
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Bernadette F Denk
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Annika B E Benz
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
| | - Eva Unternaehrer
- Child and Adolescent Research Department, University Psychiatric Clinics Basel (UPK), University of Basel, Switzerland
| | - Jens C Pruessner
- Department of Psychology, Division of Neuropsychology, University of Konstanz, Constance, Germany
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Aldulaijan HA, Al-Zawawi AS, Shaheen MY, Ali D, Divakar DD, Basudan AM. Assessment of salivary alpha amylase and mucin-4 before and after non-surgical treatment of peri-implant mucositis. Int J Implant Dent 2022; 8:30. [PMID: 35834021 PMCID: PMC9283593 DOI: 10.1186/s40729-022-00429-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/30/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The present study was based on the null hypothesis that there is no difference in clinicoradiographic parameters and whole salivary alpha amylase (AA) and mucin-4 levels before and after non-surgical mechanical debridement (NSMD) of patients with peri-implant mucositis (PM). The aim was to assess whole salivary AA and mucin-4 levels before and after treatment of PM. METHODS Patients with PM (Group-1) and individuals without peri-implant diseases (Group-2) were included. Demographic data was collected and peri-implant modified plaque and bleeding indices (mPI and mBI, respectively), probing depth (PD) and crestal bone loss were measured at baseline. Levels of AA and mucin-4 were assessed in unstimulated whole saliva samples. All patients underwent full-mouth non-surgical periodontal therapy (NSPT) and NSMD; and clinical parameters and salivary biomarkers were re-assessed after 3 months. Level of significance was set at P < 0.01. RESULTS Twenty-six and 32 individuals were included in groups 1 and 2, respectively. None of the participants had periodontitis. At baseline clinical periodontal parameters (PI [P < 0.001], GI [P < 0.001], clinical AL [P < 0.001] and PD [P < 0.001]) were significantly high in Group-1 than Group-2. At 3-month follow-up, there was a statistically significant reduction in clinical periodontal and peri-implant parameters (PI [P < 0.01], GI [P < 0.01], and PD [P < 0.01]) in Group-1 compared with their baseline values. At baseline, salivary AA levels were significantly high in Group-1 than Group-2 (P < 0.01). At 3-month follow-up, there was no significant difference in whole salivary AA levels among patients in groups 1 and 2. CONCLUSIONS The AA and mucin-4 levels are potential biomarkers for evaluation of peri-implant diseases including PM. Mechanical instrumentation continues to be the most predictable treatment option for the management of peri-implant diseases.
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Affiliation(s)
- Hajer A Aldulaijan
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Abeer S Al-Zawawi
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Marwa Y Shaheen
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Dena Ali
- Department of General Dental Practice, Kuwait University, P. O. Box 24923, 13110, Safat, Kuwait
| | - Darshan Devang Divakar
- Department of Oral Medicine and Radiology, Sharavathi Dental College and Hospital, Shivamogga, 577204, Karnataka, India.,Department of Oral Medicine and Radiology, Faculty of Dentistry, Levy Mwanawasa Medical University (LMMU), Ministry of Health, Lusaka, Zambia
| | - Amani M Basudan
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia
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Britting S, Kob R, Sieber CC, Rohleder N, Freiberger E, Becker L. Physiological stress in safer cycling in older age (SiFAr-stress): effect of a multicomponent exercise intervention-a study protocol for a randomized controlled trial. Trials 2021; 22:552. [PMID: 34419134 PMCID: PMC8379566 DOI: 10.1186/s13063-021-05481-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/22/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND SiFAr-Stress investigates the impact of cycling on stress levels in older adults. Uncertainty due to change to motorized bicycle or fear of falling can be perceived as stressors for cyclists. Stress activates different physiological signal cascades and stimulates the hypothalamic-pituitary-adrenal (HPA) axis, which leads to the release of the stress hormone cortisol and further effects such as the development of low-grade inflammation. Both can-in the long term-be associated with negative health outcomes. The aim of the study SiFAr-Stress is to analyze inflammatory processes as well as the activity of stress systems before and after a cycling intervention for older adults. METHODS In this study, community-dwelling older adults aged 65 years and older will be randomly assigned to either a cycling or a control intervention in a parallel-group design. Objective HPA axis-related measures (saliva cortisol and hair cortisol) will be assessed before, after, and 6-9 months after the cycling and control intervention (T0, T1, and T2). Furthermore, changes in cortisol reactivity in response to the cycling intervention will be investigated at the second and seventh training lessons. Furthermore, secondary outcomes (fear of falling, perceived stress, salivary alpha amylase, and C-reactive protein) will be assessed at T0, T1, and T2. DISCUSSION The study will be the first, in which stress- and health-related bio-physiological outcomes will be assessed in the context of a multicomponent exercise intervention, addressing cycling in older adults. It will enable us to better understand the underlying patho-physiological and psychological mechanisms and will help to improve interventions for this target group. TRIAL REGISTRATION ClinicalTrials.gov NCT04362514 . Prospectively registered on 27 April 2020.
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Affiliation(s)
- Sabine Britting
- Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Kobergerstraße 60, 90408, Nuremberg, Bavaria, Germany.
| | - Robert Kob
- Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Kobergerstraße 60, 90408, Nuremberg, Bavaria, Germany
| | - Cornel Christian Sieber
- Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Kobergerstraße 60, 90408, Nuremberg, Bavaria, Germany
- Department of Medicine, Kantonsspital Winterthur, Winterthur, Switzerland
| | - Nicolas Rohleder
- Department of Psychology, Chair of Health Psychology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Bavaria, Germany
| | - Ellen Freiberger
- Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Kobergerstraße 60, 90408, Nuremberg, Bavaria, Germany
| | - Linda Becker
- Department of Psychology, Chair of Health Psychology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Bavaria, Germany
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Pulivarthi V, P J, Naidu CV. Ameliorative effect of Annona reticulata L. leaf extract on antihyperglycemic activity and its hepato-renal protective potential in streptozotocin induced diabetic rats. J Ayurveda Integr Med 2021; 12:415-26. [PMID: 34147340 DOI: 10.1016/j.jaim.2021.01.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/18/2021] [Accepted: 01/31/2021] [Indexed: 01/05/2023] Open
Abstract
Background Annona reticulata L. is a traditionally important plant due to its versatile source of medicine and industrial products. It is used to treat cardiac problems, wound healing, diabetes, ulcers and bacterial infections. As it is a commercial fruit bearing plant, wide range studies on this plant reaches the mankind efficiently. Objective(s) The present study was focussed on antihyperglycemic potential of A. reticulata leaves under in vitro and in vivo. Material and methods The in vitro phytochemical analysis, total phenolic, flavonoid content, inhibition activity on alpha amylase and alpha glucosidase enzymes were determined for various solvent extracts, followed by in vivo oral toxicity, short term, dose dependant antihyperglycemic studies, oral glucose tolerance tests were performed. The activity of methanolic extract of A.reticulata (MeEAR)-500 mg/kg b.wt was studied for 28 days in diabetic rat model. Histopathological examinations and serum biochemical assays were performed. Gas chromatography–Mass spectrometry (GC–MS) analysis was performed to identify the compounds present in MeEAR. Results Among the various extracts, MeEAR possesses higher amount of phenols and flavonoids with effective inhibition on carbohydrate hydrolysing enzymes (P < 0.05) and also exhibited higher glycemic control in vivo, with simultaneous improvement in the hepatic and renal activities in diabetic rats. GC–MS analysis revealed the presence of 63 bioactive compounds including carboxylic-acids, alcoholic groups, fattyacid esters, amino acid derivatives. Conclusion Altogether, our study demonstrated that leaves of A.reticulata possess better antihyperglycemic activity and could be developed in to a potential antidiabetic drug with further studies.
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Sicorello M, Neubauer AB, Stoffel M, Koehler F, Voss A, Ditzen B. Psychological structure and neuroendocrine patterns of daily stress appraisals. Psychoneuroendocrinology 2021; 127:105198. [PMID: 33761422 DOI: 10.1016/j.psyneuen.2021.105198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 03/04/2021] [Accepted: 03/07/2021] [Indexed: 11/30/2022]
Abstract
Threat and challenge are two fundamental appraisal concepts of psychological stress theories, determined by the mismatch between demands and resources. Previous research has predominantly investigated the neuroendocrine correlates of stress appraisal in laboratory contexts during acute demanding situations. We tested whether the psychoneuroendocrinology of stress appraisals can also be investigated in naturalistic trans-contextual everyday life settings. Forty-two participants produced five daily saliva samples and provided concurrent questionnaire data on subjective stress, demands, resources, and the threat-challenge continuum over the course of five days (69% female; mean age = 22.8, range = 18-30 years). Momentary salivary cortisol and alpha amylase were predicted with three-level autoregressive linear mixed models. We found that both momentary cortisol and alpha amylase were elevated during higher subjective stress. In contrast, cortisol was not significantly related to a bipolar threat-challenge indicator. Moreover within-person response surface analyses showed no effect of the mismatch between demands and resources on either physiological stress indicator, but confirmed theoretically proposed effects on subjective threat-challenge, which was replicated in another intensive longitudinal (N = 61) and a large cross-sectional sample (N = 1194). In sum, our study (a) suggests robust relations between subjective stress and HPA/SAM axis activity on a moment-to-moment basis and (b) confirms theoretical predictions concerning stress appraisal and the mismatch between demands and resources on a psychological level. In contrast, no neuroendocrine patterns of threat-challenge were found, suggesting that neuroendocrine patterns might be context-specific and do not apply to a general demand-resource imbalance in everyday life.
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Affiliation(s)
- Maurizio Sicorello
- Heidelberg University, Medical Faculty Mannheim, Central Institute of Mental Health, Department of Psychosomatic Medicine and Psychotherapy, K3 21, 68159 Mannheim, Germany.
| | - Andreas B Neubauer
- DIPF
- Leibniz Institute for Research and Information in Education, Department for Education and Human Development, Rostocker Str. 6, 60323 Frankfurt am Main, Germany
| | - Martin Stoffel
- Heidelberg University, University Hospital, Center for Psychosocial Medicine, Institute of Medical Psychology, Bergheimer Str. 20, 69115 Heidelberg, Germany
| | - Friederike Koehler
- Heidelberg University, University Hospital, Center for Psychosocial Medicine, Institute of Medical Psychology, Bergheimer Str. 20, 69115 Heidelberg, Germany
| | - Andreas Voss
- Heidelberg University, Institute of Psychology, Department for Quantitative Research Methods, Hauptstraße 47-51, 69117 Heidelberg, Germany
| | - Beate Ditzen
- Heidelberg University, University Hospital, Center for Psychosocial Medicine, Institute of Medical Psychology, Bergheimer Str. 20, 69115 Heidelberg, Germany
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Kor M, Pouramir M, Khafri S, Ebadollahi S, Gharekhani S. Association between Dental Caries, Obesity and Salivary Alpha Amylase in Adolescent Girls of Babol City, Iran-2017. J Dent (Shiraz) 2021; 22:27-32. [PMID: 33681420 PMCID: PMC7921765 DOI: 10.30476/dentjods.2020.84190.1070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Statement of the Problem Adolescents are at risk of obesity and caries due to various factors such as diet and poor health habits; these factors may affect their body mass index (BMI) and salivary components. Therefore, it is necessary to assess these factors and their relationship in this age group. Purpose This study aimed to evaluate the association between decayed missing filled teeth index (DMFT), salivary alpha amylase (sAA) level and age-specific BMI in adolescent girls. Materials and Method A cross-sectional study was conducted on 81 females aged 13-15 years in 3 groups of BMI percentiles; "normal", "at risk for overweight" and "overweight" (n=27). DMFT was calculated and unstimulated saliva samples were collected. The sAA level was measured with a spectrophotometer. Data were analyzed using Kolmogorov-Smir-nov test, Kruskal- Wallis and Spearman correlation tests using SPSS (version 23) at p< 0.05. Results The concentration of sAA and mean DMFT were estimated 1326.56±4.73 U/L and 2.77±2.36, respectively. There was no significant difference in sAA level and mean DMFT among BMI groups. A positive and significant correlation was found between sAA and DMFT in overweight group (r 0.46, p= 0.014). Conclusion Within the limitation of this study, higher levels of sAA may be considered as an indicator for dental caries in overweight adolescent girls.
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Affiliation(s)
- Marie Kor
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran
| | - Mahdi Pouramir
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Iran
| | - Soraya Khafri
- Dept. of Biostatics and Epidemiology, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Shima Ebadollahi
- Student of Clinical Biochemistry, Babol University of Medical Sciences, Babol, Iran
| | - Samane Gharekhani
- Oral Health Research Research Center, Institute of Health, Babol University of Medical Sciences, Babol, Iran
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15
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Durán-Carabali LE, Henao-Pacheco ML, González-Clavijo AM, Dueñas Z. Salivary alpha amylase and cortisol levels as stress biomarkers in children with cerebral palsy and their association with a physical therapy program. Res Dev Disabil 2021; 108:103807. [PMID: 33161308 DOI: 10.1016/j.ridd.2020.103807] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
INTRODUCTION Cerebral palsy (CP) is one of the main causes of physical disabilities in childhood. There is evidence that CP children display high levels of stress, which could interfere with learning processes and interpretation of relevant sensory information during motor skills acquisition and socialization. OBJECTIVE This study aims to compare basal levels of stress biomarkers (cortisol and alpha-amylase) of healthy children (HC) and children with CP, and to investigate whether a physical therapy session using the neurodevelopmental technique (NDT) interferes with these levels. METHODS A cross-sectional design was used. A total of 86 children (HC: n = 45 and CP: n = 41) with matching age, sex, socioeconomic status, and sampling time. Salivary cortisol and alpha-amylase levels were measured by means of electrochemiluminescence and spectrophotometry methods. A single saliva sample was collected in the HC group to determine basal levels. For CP group three samples were collected: a first sample was taken 20-30 min prior to the intervention, while two post-intervention samples were collected (5 and 20 min) to evaluate individual changes in salivary stress biomarkers. RESULTS Higher basal cortisol concentration was found in CP children when compared to HC group. Moreover, CP children showed a significant reduction in cortisol levels 20 min after NDT intervention. No significant differences were observed in alpha-amylase values. CONCLUSION Present results show that CP causes alteration in basal cortisol values at childhood and suggest that CP children respond to environmental regulatory factors such as NDT, in attempt to reduce stress.
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Affiliation(s)
- Luz Elena Durán-Carabali
- Group of Neurobiology and Behavior- Department of Physiological Science, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Mabel Lucía Henao-Pacheco
- Group of Neurobiology and Behavior- Department of Physiological Science, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Angélica María González-Clavijo
- Group of Neurobiology and Behavior- Department of Physiological Science, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia.
| | - Zulma Dueñas
- Group of Neurobiology and Behavior- Department of Physiological Science, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
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Heckenberg RA, Hale MW, Kent S, Wright BJ. Empathy and job resources buffer the effect of higher job demands on increased salivary alpha amylase awakening responses in direct-care workers. Behav Brain Res 2020; 394:112826. [PMID: 32717375 DOI: 10.1016/j.bbr.2020.112826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/08/2020] [Accepted: 07/20/2020] [Indexed: 11/30/2022]
Abstract
The job demands-resources (JD-R) model has rarely been used in conjunction with physiological indicators of stress and ill-health. This study explored the associations between the JD-R model and physiological indicators of the stress response, while considering potential moderators of this relationship. Across 2 timepoints (summer-winter) direct-care workers completed questionnaires assessing job demands, job resources, empathy and self-efficacy, and provided morning saliva samples to assess physiological indices of stress and ill-health. Changes in job resources and empathy were positively correlated with changes in the cortisol awakening response (CAR). Further, changes in both job resources and empathy independently buffered the impact of higher job demands on increased salivary alpha amylase awakening response (sAA-AR) concentrations. These findings suggest that despite increased job demands, the sAA-AR decreased for direct-care workers that had perceived high job resources or who reported higher empathy. Potentially, job resources and empathy may act as a protective factor against the development of poor health associated with workplace stress.
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Affiliation(s)
- Rachael A Heckenberg
- School of Psychology and Public Health, La Trobe University, Wodonga, Victoria, 3690, Australia
| | - Matthew W Hale
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria, 3086, Australia
| | - Stephen Kent
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria, 3086, Australia
| | - Bradley J Wright
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria, 3086, Australia.
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17
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ÖZCAN D, SİPAHİOĞLU HM. Simultaneous production of alpha and beta amylase enzymes using separate gene bearing recombinant vectors in the same Escherichia coli cells. Turk J Biol 2020; 44:201-207. [PMID: 32922127 PMCID: PMC7478135 DOI: 10.3906/biy-2001-71] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The present study describes the simultaneous expression of thermostable industrial alpha (α) and beta (β) amylase enzymes that have been used widely in starch industry. Genomic DNA of Bacillus stearothermophilus DSM 22 strain for α amylase and, Thermoanaerobacterium (Clostridium) thermosulfurogenes DSM 2229 strain for β amylase were used as gene sources. Both genes were ligated into pETDuet-1 expression vector separately and resulting recombinant vectors were transformed into Escherichia coli BL21 competent cells by electroporation. The cells were first transformed by pETDuet-1/ αAmy recombinant plasmid, then the competent cells carrying this plasmid were prepared for the transformation of pETDuet-1/ βAmy plasmid. Enzymatic activities of bacterial colonies were detected on LB agar staining with iodide. Both enzymes were more produced by IPTG induction in BL21 cells and were purified using Ni-NTA agarose column. SDS-PAGE and western blot analyses showed that the molecular weight of purified α and β amylase to be approximately 60 kDa and 55kDa, respectively. The concentration of the purified α and β amylase were calculated as 4.59 μg/mL and 3.17 μg/mL with IPTG as an inducer in LB medium. The present study proposes a novel and efficient method for the production of thermostable α and β amylases at the same E coli cells containing separate engineered plasmid vectors.
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Affiliation(s)
- Dilek ÖZCAN
- Department of Plant Protection, Faculty of Agriculture, Van Yüzüncü Yıl University, VanTurkey
| | - Hikmet Murat SİPAHİOĞLU
- Department of Plant Protection, Faculty of Agriculture, Malatya Turgut Özal University, MalatyaTurkey
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18
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Rashid U, Khan MR, Sajid M. Antioxidant, anti-inflammatory and hypoglycemic effects of Fagonia olivieri DC on STZ-nicotinamide induced diabetic rats - In vivo and in vitro study. J Ethnopharmacol 2019; 242:112038. [PMID: 31247238 DOI: 10.1016/j.jep.2019.112038] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/12/2019] [Accepted: 06/22/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fagonia olivieri (Zygophyllaceae) is used in Pakistan for management of diabetes and for treatment of stress related disorders of liver and kidneys. The objective of present study was to evaluate antidiabetic activity of F. olivieri using streptozotocin-nicotinamide induced diabetic rat model. METHODS Powder of the whole plant of F. olivieri was extracted with methanol (FOME) and the residue was fractionated with n-hexane (FOHE), chloroform (FOCE), ethyl acetate (FOCE), n-butanol (FOBE) and the remaining soluble aqueous fraction (FOAE). The extract/fractions were evaluated for in vitro inhibition of α-amylase and α-glucosidase and for the antidiabetic studies in Sprague-Dawley rats. FOAE was evaluated in 21 day chronic multiple dose study. Glibenclamide (10 mg/kg) and FOAE were used at a concentration of 200 mg/kg (164.8 μg of catechin) and 400 mg/kg (329.6 μg of catechin) in streptozotocin (STZ)-induced diabetic rats. Various serum parameters, blood cell parameters and oxidative stress induced parameters of the liver and kidneys were investigated. RESULTS Results showed that aqueous fraction of F. olivieri (FOAE) potentially inhibited activity of pancreatic α-amylase, intestinal maltase and sucrase. Administration of FOAE (200 mg/kg; 400 mg/kg) to diabetic rats for 21 days increased body weight, hemoglobin and its indices, RBCs, platelets, lymphocytes and neutrophils against diabetic group. In serum level of glucose, transaminases, ALP, LDH, total bilirubin, creatinine and lipids decreased while insulin, total protein and albumin increased in contrast to diabetic group. Further, level of cytokines; TGF-β1, TNF-α and IL-6 in serum and altered level of antioxidant enzymes, glutathione and lipid peroxides of liver and kidney tissues restored towards control animals. CONCLUSION This study demonstrated that FOAE inhibited activity of digestive enzymes and exhibited antioxidant, anti-inflammatory and antihyperglycemic activity in STZ-nicotinamide prompted diabetic rats and suggested that FOAE might be used as a therapeutic agent for the management of type-2 diabetes.
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Affiliation(s)
- Umbreen Rashid
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Muhammad Rashid Khan
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Moniba Sajid
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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Pumpa KL, McKune AJ, Harnett J. A novel role of probiotics in improving host defence of elite rugby union athlete: A double blind randomised controlled trial. J Sci Med Sport 2019; 22:876-881. [PMID: 31006545 DOI: 10.1016/j.jsams.2019.03.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/12/2019] [Accepted: 03/31/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To examine the effects of a probiotic protocol on the incidence and severity of respiratory and gastrointestinal infections in elite rugby union athletes across an international competition season. Associations were also investigated between salivary biomarkers of stress (cortisol, alpha-amylase) and mucosal immunity (secretory(s)-IgA). DESIGN A double-blind RCT was conducted over 27-weeks, divided into three stages: (1) control period; (2) domestic competition; and (3) international competition. METHODS Athletes were assigned a probiotic (n = 9) or placebo (n = 10) supplement. Ultrabiotic 60™ or placebo was taken with food twice daily for 17 weeks and SB Floractiv™ 250 mg added twice daily during stage three. RESULTS Five infections were diagnosed by the team sports physician across the 27-weeks, three within the intervention period in athletes randomised to the placebo group. No significant group x time interaction effects for salivary cortisol, alpha-amylase or s-IgA were identified over the 27-week time period, although a significant main effect for group and time was identified for salivary cortisol, alpha-amylase, and s-IgA (p < 0.05 for all). When considering stage, significant differences were identified in stage one with s-IgA lower in the probiotic group (p = 0.015). In stage two and three, salivary cortisol was higher in the probiotic group (p = 0.016 and p = 0.001 respectively), and salivary alpha-amylase was higher in the probiotic group in stage three (p = 0.007). CONCLUSION The probiotic protocol used in this study was associated with an increase in salivary alpha-amylase supporting its possible role as a host defence peptide.
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Affiliation(s)
- Kate L Pumpa
- UC Research Institute for Sport and Exercise, University of Canberra, Australia; Rugby Australia, Australia, Australia.
| | - Andrew J McKune
- UC Research Institute for Sport and Exercise, University of Canberra, Australia
| | - Joanna Harnett
- The University of Sydney School of Pharmacy, Faculty of Medicine and Health, Australia
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Zimmer P, Buttlar B, Halbeisen G, Walther E, Domes G. Virtually stressed? A refined virtual reality adaptation of the Trier Social Stress Test (TSST) induces robust endocrine responses. Psychoneuroendocrinology 2019; 101:186-192. [PMID: 30469086 DOI: 10.1016/j.psyneuen.2018.11.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/26/2018] [Accepted: 11/06/2018] [Indexed: 11/18/2022]
Abstract
In recent years, virtual reality (VR) technology has found its way into nearly all fields of psychology. Previous studies indicated that virtual reality adaptations of the TSST are less potent in stimulating HPA-axis responses, with lower salivary cortisol responses recorded as compared to the in-vivo TSST. (TSST-IV). In the present experiment we tested the stress-induction potential of a refined version of the TSST-VR using a fully orthogonal experimental design in which ninety-three healthy males were either assigned to the TSST condition or a corresponding control condition in a real or virtual environment. We found a significant increase of endocrine, autonomic and self-reported stress markers in both stress conditions. Notably, we found a robust rise in salivary cortisol to the TSST-VR comparable to that observed in the TSST-IV. Despite subtle differences in response between virtual and in vivo settings, we conclude that VR adaptations of in-vivo stressors have the potential to induce real physiological and subjective reactions.
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Affiliation(s)
- Patrick Zimmer
- Department of Biological and Clinical Psychology, University of Trier, Johanniterufer 15, 54290, Trier, Germany
| | - Benjamin Buttlar
- Department of Social Psychology, University of Trier, Universitätsring 15, 54296, Trier, Germany
| | - Georg Halbeisen
- Department of Social Psychology, University of Trier, Universitätsring 15, 54296, Trier, Germany
| | - Eva Walther
- Department of Social Psychology, University of Trier, Universitätsring 15, 54296, Trier, Germany.
| | - Gregor Domes
- Department of Biological and Clinical Psychology, University of Trier, Johanniterufer 15, 54290, Trier, Germany.
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Warren CM, Tona KD, Ouwerkerk L, van Paridon J, Poletiek F, van Steenbergen H, Bosch JA, Nieuwenhuis S. The neuromodulatory and hormonal effects of transcutaneous vagus nerve stimulation as evidenced by salivary alpha amylase, salivary cortisol, pupil diameter, and the P3 event-related potential. Brain Stimul 2018; 12:635-642. [PMID: 30591360 DOI: 10.1016/j.brs.2018.12.224] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Transcutaneous vagus nerve stimulation (tVNS) is a new, non-invasive technique being investigated as an intervention for a variety of clinical disorders, including epilepsy and depression. It is thought to exert its therapeutic effect by increasing central norepinephrine (NE) activity, but the evidence supporting this notion is limited. OBJECTIVE In order to test for an impact of tVNS on psychophysiological and hormonal indices of noradrenergic function, we applied tVNS in concert with assessment of salivary alpha amylase (SAA) and cortisol, pupil size, and electroencephalograph (EEG) recordings. METHODS Across three experiments, we applied real and sham tVNS to 61 healthy participants while they performed a set of simple stimulus-discrimination tasks. Before and after the task, as well as during one break, participants provided saliva samples and had their pupil size recorded. EEG was recorded throughout the task. The target for tVNS was the cymba conchae, which is heavily innervated by the auricular branch of the vagus nerve. Sham stimulation was applied to the ear lobe. RESULTS P3 amplitude was not affected by tVNS (Experiment 1A: N = 24; Experiment 1B: N = 20; Bayes factor supporting null model = 4.53), nor was pupil size (Experiment 2: N = 16; interaction of treatment and time: p = .79). However, tVNS increased SAA (Experiments 1A and 2: N = 25) and attenuated the decline of salivary cortisol compared to sham (Experiment 2: N = 17), as indicated by significant interactions involving treatment and time (p = .023 and p = .040, respectively). CONCLUSION These findings suggest that tVNS modulates hormonal indices but not psychophysiological indices of noradrenergic function.
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Affiliation(s)
- C M Warren
- Institute of Psychology, Leiden University, Leiden, 2333, AK, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Leiden, 2300, RC, Netherlands.
| | - K D Tona
- Institute of Psychology, Leiden University, Leiden, 2333, AK, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Leiden, 2300, RC, Netherlands
| | - L Ouwerkerk
- Institute of Psychology, Leiden University, Leiden, 2333, AK, Netherlands
| | - J van Paridon
- Institute of Psychology, Leiden University, Leiden, 2333, AK, Netherlands; Max Planck Institute of Psycholinguistics, Nijmegen, 6525, XD, Netherlands
| | - F Poletiek
- Institute of Psychology, Leiden University, Leiden, 2333, AK, Netherlands; Max Planck Institute of Psycholinguistics, Nijmegen, 6525, XD, Netherlands
| | - Henk van Steenbergen
- Institute of Psychology, Leiden University, Leiden, 2333, AK, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Leiden, 2300, RC, Netherlands
| | - J A Bosch
- Department of Clinical Psychology, University of Amsterdam, Amsterdam, 1018, XA, Netherlands; Mannheim Institute of Public Health, Heidelberg University, Mannheim, 68167, Germany
| | - S Nieuwenhuis
- Institute of Psychology, Leiden University, Leiden, 2333, AK, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Leiden, 2300, RC, Netherlands
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22
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Ferrandini Price M, Escribano Tortosa D, Nieto Fernandez-Pacheco A, Perez Alonso N, Cerón Madrigal JJ, Melendreras-Ruiz R, García-Collado ÁJ, Pardo Rios M, Juguera Rodriguez L. Comparative study of a simulated incident with multiple victims and immersive virtual reality. Nurse Educ Today 2018; 71:48-53. [PMID: 30241022 DOI: 10.1016/j.nedt.2018.09.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 08/03/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVES The main objective of the study is to determine the efficiency in the execution of the START (Simple Triage and Rapid Treatment) triage, comparing Virtual Reality (VR) to Clinical Simulation (CS) in a Mass Casualty Incident (MCI). The secondary objective is to determine the stress produced in the health professionals in the two situations described. MATERIALS A comparative study on the efficiency and the stress during triage in a MSI was conducted. The basal and post levels of salivary α-amylase (sAA) activity were measured in all the participants before and after the simulation. RESULTS The percentage of victims that were triaged correctly was 87.65% (SD = 8.3); 88.3% (SD = 9.65) for the Clinical Simulation with Actors (CSA) group and 87.2% (SD = 7.2) for the Virtual Reality Simulation (VRG) group, without any significant differences (p = 0.612) between both groups. The basal sAA was 103.26 (SD = 79.13) U/L with a significant increase (p < 0.001) with respect to the post-simulation levels (182.22, SD = 148.65 U/L). The increase of sAA was 80.70 (SD = 109.67) U/mL, being greater for the CSA group than the VRG group. CONCLUSION The results show that virtual reality method is as efficient as clinical simulation for training on the execution of basic triage (START model). Also, based on the sAA results, we can attest that clinical simulation creates a more stressful training experience for the student, so that is should not be substituted by the use of virtual reality, although the latter could be used as a complementary activity.
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Affiliation(s)
| | - Damián Escribano Tortosa
- Department of Food and Animal Science, Faculty of Veterinary Medicine, Autonomous University of Barcelona, Spain
| | - Antonio Nieto Fernandez-Pacheco
- Doctoral Program in Health Sciences, Catholic University of Murcia (UCAM), Spain; Emergency Service 061 of the Region of Murcia, Spain
| | | | - José Joaquín Cerón Madrigal
- Interdisciplinar Laboratory of Clinical Analysis of Murcia University (Interlab-UMU), Campus of Excelence, University of Murcia, Spain
| | | | | | - Manuel Pardo Rios
- Emergency Service 061 of the Region of Murcia, Spain; Emergencies and Special Unit Care, UCAM, Spain.
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23
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Heckenberg RA, Hale MW, Kent S, Wright BJ. An online mindfulness-based program is effective in improving affect, over-commitment, optimism and mucosal immunity. Physiol Behav 2018; 199:20-27. [PMID: 30395806 DOI: 10.1016/j.physbeh.2018.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/02/2018] [Accepted: 11/02/2018] [Indexed: 01/28/2023]
Abstract
Previous studies have demonstrated mindfulness-based programs are effective in reducing workplace stress; however, few have investigated the effectiveness of online mindfulness-based programs. Physiological measures are also underutilised when examining the efficacy of these programs. Therefore, we assessed the efficacy of an online mindfulness-based program on both short-term and more enduring aspects of psychological and physiological measures of stress and ill-health. Participants (N = 22) completed an 8-week online mindfulness-based program. Immediately before and after a mindfulness session, participants completed questionnaires to assess the short-term effects on mood and state anxiety and provided saliva samples to assess salivary alpha amylase (sAA) concentrations. Additionally, pre and post the 8-week intervention, participants completed questionnaires assessing workplace stress, over-commitment, work engagement, dispositional mindfulness and personal resources. Saliva samples were collected to measure the cortisol awakening response, sAA awakening response and secretory immunoglobulin A (sIgA). Our findings demonstrate that online mindfulness-based programs induce short-term improvements in fatigue and anxiety in employees. Additionally, we also report a decrease in over-commitment and increases in optimism and mucosal immunity (sIgA) following the program.
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Affiliation(s)
- Rachael A Heckenberg
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Matthew W Hale
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Stephen Kent
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Bradley J Wright
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria 3086, Australia.
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24
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Stülb K, Messerli-Bürgy N, Kakebeeke TH, Arhab A, Zysset AE, Leeger-Aschmann CS, Schmutz EA, Meyer AH, Garcia-Burgos D, Ehlert U, Kriemler S, Jenni OG, Puder JJ, Munsch S. Age-Adapted Stress Task in Preschoolers Does not Lead to Uniform Stress Responses. J Abnorm Child Psychol 2018; 47:571-587. [PMID: 30255434 DOI: 10.1007/s10802-018-0475-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Acute stress response measures serve as an indicator of physiological functioning, but have previously led to contradictory results in young children due to age-related cortisol hypo-responsivity and methodological inconsistencies in assessment. The aim of this study was to investigate stress responses during a validated age-adapted socio-evaluative stress task in children aged 2-6 years in a child care environment and to detect socio-demographic, task- and child-related characteristics of stress responses. Stress responses were assessed in 323 children for salivary cortisol and salivary alpha amylase (sAA), and in 328 children for changes in heart rate variability (HRV). These data were then associated with socio-demographic (e.g. SES), task-related (e.g. task length) and child-related characteristics (e.g. self-regulation) of stress responses using multilevel models. Analyses revealed elevated sympathetic reactivity (sAA: Coeff=0.053, p=0.004) and reduced HRV (Coeff=-0.465, p<0.001), but no hypothalamic-pituitary-adrenal (HPA) response (Coeff=0.017, p=0.08) during the stress task. Child's age (Coeff=-5.82, p<0.001) and movement during the task (Coeff=-0.17, p=0.015) were associated with acute cortisol release, while diurnal sAA was associated with acute sAA release (Coeff=0.24, p<0.001). Age (Coeff=-0.15, p=0.006) and duration of the task (Coeff=0.13, p=0.015) were further associated with change of HRV under acute stress condition. Children showed inconsistent stress responses which contradicts the assumption of a parallel activation of both stress systems in a valid stress task for young children and might be explained by a pre-arousal to the task of young children in a child care setting. Further results confirm that child- and task-related conditions need to be considered when assessing stress responses in these young children.
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Affiliation(s)
- Kerstin Stülb
- Department of Clinical Psychology and Psychotherapy, University of Fribourg, Rue P.A. de Faucigny 2, 1700, Fribourg, Switzerland
| | - Nadine Messerli-Bürgy
- Department of Clinical Psychology and Psychotherapy, University of Fribourg, Rue P.A. de Faucigny 2, 1700, Fribourg, Switzerland
- Department of Psychology - Clinical Child Psychology and Biological Psychology, University of Fribourg, Rue P.A. de Faucigny 2, 1700, Fribourg, Switzerland
- Endocrinology, Diabetes & Metabolism Service, Centre Hospitalier Universitaire Vaudois (CHUV), Avenue Pierre Decker 2, 1011, Lausanne, Switzerland
| | - Tanja H Kakebeeke
- Child Development Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
- Children's Research Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
| | - Amar Arhab
- Endocrinology, Diabetes & Metabolism Service, Centre Hospitalier Universitaire Vaudois (CHUV), Avenue Pierre Decker 2, 1011, Lausanne, Switzerland
| | - Annina E Zysset
- Child Development Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
| | - Claudia S Leeger-Aschmann
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Hirschengraben 84, 8001, Zurich, Switzerland
| | - Einat A Schmutz
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Hirschengraben 84, 8001, Zurich, Switzerland
| | - Andrea H Meyer
- Department of Clinical Psychology and Psychotherapy, University of Fribourg, Rue P.A. de Faucigny 2, 1700, Fribourg, Switzerland
- Department for Psychology, University of Basel, Missionsstrasse 62A, 4055, Basel, Switzerland
| | - David Garcia-Burgos
- Department of Clinical Psychology and Psychotherapy, University of Fribourg, Rue P.A. de Faucigny 2, 1700, Fribourg, Switzerland
| | - Ulrike Ehlert
- Department of Psychology - Clinical Psychology and Psychotherapy, University of Zurich, Binzmühlestrasse 14/Box 26, 8050, Zurich, Switzerland
| | - Susi Kriemler
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Hirschengraben 84, 8001, Zurich, Switzerland
| | - Oskar G Jenni
- Child Development Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
- Children's Research Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
| | - Jardena J Puder
- Endocrinology, Diabetes & Metabolism Service, Centre Hospitalier Universitaire Vaudois (CHUV), Avenue Pierre Decker 2, 1011, Lausanne, Switzerland
- Division of Pediatric Endocrinology, Diabetology and Obesity, Centre Hospitalier Universitaire Vaudois (CHUV), Hôtel des Patients, Ave de Sallaz 8, 1011, Lausanne, Switzerland
| | - Simone Munsch
- Department of Clinical Psychology and Psychotherapy, University of Fribourg, Rue P.A. de Faucigny 2, 1700, Fribourg, Switzerland.
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25
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Doerr JM, Nater UM, Ehlert U, Ditzen B. Co-variation of fatigue and psychobiological stress in couples' everyday life. Psychoneuroendocrinology 2018; 92:135-141. [PMID: 29395487 DOI: 10.1016/j.psyneuen.2018.01.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 12/15/2017] [Accepted: 01/18/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVE There is limited knowledge about how fatigue develops and worsens and what influences fluctuations in daily fatigue. Stress was found to influence fatigue, and being in a relationship seems to either increase or decrease stress depending on the couple interaction. In this study, co-variation of fatigue, self-reported stress, and biological stress markers in couples' everyday lives was investigated. Specifically, we examined a) whether momentary couple interactions moderated dyadic outcomes and b) whether and how stress and relationship measures influenced individual momentary fatigue. METHODS Forty heterosexual couples (age: 28 ± 5 years) reported subjective fatigue and stress levels 4 times a day for 5 consecutive days (1600 measures). Furthermore, participants reported whether they had interacted with their partner since the last data entry and, if so, they rated the valence of this interaction. Salivary cortisol (a measure of HPA axis activity) and alpha amylase (a measure of ANS activity) were analyzed as biological stress markers from saliva samples obtained at the same time points. Moment-to-moment data were analyzed using dyadic multilevel models to account for the nested design. RESULTS Stress (women and men: p ≤ 0.001) and fatigue (women: p = .003, men: p = .020) showed patterns of co-variation within couples, especially if partners had interacted with each other since the previous data entry. Cortisol was also found to co-vary between partners (women: unstandardized coefficient (UC) = 0.12, p ≤ .001, men: UC = 0.18, p ≤ .001), whereas the regulation of alpha-amylase levels depending on the partner's levels was only present in women (UC = 0.11, p = .002). Valence of couple interaction was negatively associated with fatigue (women: UC = -0.13, p ≤ .001, men: UC = -0.06, p = .011). There was no momentary association of fatigue with an individual's own or the partner's subjective or biological stress markers. CONCLUSIONS Fatigue and stress levels during the day seem to co-vary within couples. These associations were particularly strong when the partners had interacted with each other since the last measurement. These data underline the importance of social factors in fatigue and stress in everyday life.
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Affiliation(s)
- Johanna M Doerr
- Clinical Biopsychology, Department of Psychology, University of Marburg, Gutenbergstrasse 18, 35032 Marburg, Germany.
| | - Urs M Nater
- Clinical Biopsychology, Department of Psychology, University of Marburg, Gutenbergstrasse 18, 35032 Marburg, Germany; Clinical Psychology, Department of Psychology, University of Vienna, Liebiggasse 5, 1010 Vienna, Austria
| | - Ulrike Ehlert
- Clinical Psychology and Psychotherapy, Department of Psychology, University of Zurich, Binzmuhlestr. 14, 8050 Zurich, Switzerland
| | - Beate Ditzen
- Institute of Medical Psychology, Center for Psychosocial Medicine, Heidelberg University, Bergheimer Str. 20, 69115 Heidelberg, Germany.
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26
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Abstract
We assessed the relationship between physiological and psychological measures of workplace stress as measured by the effort-reward imbalance (ERI) model, with a seldom studied sample of owner-operator dairy farmers. Dairy farmers (N = 74) self-reported ERI, over-commitment (OC), dedication, and health then provided awakening saliva samples that were used to calculate the salivary alpha amylase awakening response (sAA-AR), cortisol awakening response (CAR), and salivary immunoglobulin A (sIgA) level. ERI, OC, and dedication levels were not related with sIgA or the CAR, but more over-committed farmers had a less pronounced sAA-AR. OC was more associated than ERI with the physiological indicators of stress, potentially due to the owner-operator sample used in this investigation. The suitability of sAA as a viable physiological measure of autonomic nervous system activity has been debated, but our findings promote its inclusion in future occupational stress research.
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Affiliation(s)
- Pennie Eddy
- a School of Psychology and Public Health , La Trobe University , Bundoora , Australia
| | - Eleanor H Wertheim
- a School of Psychology and Public Health , La Trobe University , Bundoora , Australia
| | - Matthew W Hale
- a School of Psychology and Public Health , La Trobe University , Bundoora , Australia
| | - Bradley J Wright
- a School of Psychology and Public Health , La Trobe University , Bundoora , Australia
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27
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Warren CM, van den Brink RL, Nieuwenhuis S, Bosch JA. Norepinephrine transporter blocker atomoxetine increases salivary alpha amylase. Psychoneuroendocrinology 2017; 78:233-236. [PMID: 28232237 DOI: 10.1016/j.psyneuen.2017.01.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 12/22/2016] [Accepted: 01/23/2017] [Indexed: 11/20/2022]
Abstract
It has been suggested that central norepinephrine (NE) activity may be inferred from increases in salivary alpha-amylase (SAA), but data in favor of this proposition are limited. We administered 40mg of atomoxetine, a selective NE transporter blocker that increases central NE levels, to 24 healthy adult participants in a double-blind, placebo-controlled cross-over design. Atomoxetine administration significantly increased SAA secretion and concentrations at 75-180min after treatment (more than doubling baseline levels). Consistent with evidence that elevation in central NE is a co-determinant of hypothalamic-pituitary-adrenal axis activity, salivary cortisol also approximately doubled at the same time points. Moreover, changes in salivary cortisol positively correlated with SAA (0.44<rho<0.56), bolstering the position that the origin of the changes in SAA reflect central NE. This work points toward the potential value of SAA as an inexpensive and non-invasive procedure to obtain information about activation of the central NE system.
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Affiliation(s)
- Christopher M Warren
- Institute of Psychology, Leiden University, Leiden 2333 AK, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Leiden 2300 RC, Netherlands.
| | - Ruud L van den Brink
- Institute of Psychology, Leiden University, Leiden 2333 AK, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Leiden 2300 RC, Netherlands
| | - Sander Nieuwenhuis
- Institute of Psychology, Leiden University, Leiden 2333 AK, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Leiden 2300 RC, Netherlands
| | - Jos A Bosch
- Department of Clinical Psychology, University of Amsterdam, Amsterdam 1018 WT, Netherlands; Mannheim Institute of Public Health, Heidelberg University, Mannheim 68167, Germany; Department of Medical Psychology, Academic Medical Center Amsterdam, Amsterdam, 1105 AZ, Netherlands
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28
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Maratos FA, Duarte J, Barnes C, McEwan K, Sheffield D, Gilbert P. The physiological and emotional effects of touch: Assessing a hand-massage intervention with high self-critics. Psychiatry Res 2017; 250:221-227. [PMID: 28167436 DOI: 10.1016/j.psychres.2017.01.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 01/13/2017] [Accepted: 01/22/2017] [Indexed: 10/20/2022]
Abstract
Research demonstrates that highly self-critical individuals can respond negatively to the initial introduction of a range of therapeutic interventions. Yet touch as a form of therapeutic intervention in self-critical individuals has received limited prior investigation, despite documentation of its beneficial effects for well-being. Using the Forms of Self-Criticism/Self-Reassuring Scale, 15 high- and 14 low- self-critical individuals (from a sample of 139 females) were recruited to assess how self-criticism impacts upon a single instance of focused touch. All participants took part in a hand massage- and haptic control- intervention. Salivary cortisol and alpha amylase, as well as questionnaire measures of emotional responding were taken before and after the interventions. Following hand massage, analyses revealed cortisol decreased significantly across all participants; and that significant changes in emotional responding reflected well-being improvements across all participants. Supplementary analyses further revealed decreased alpha amylase responding to hand massage as compared to a compassion-focused intervention in the same (highly self-critical) individuals. Taken together, the physiological and emotional data indicate high self-critical individuals responded in a comparable manner to low self-critical individuals to a single instance of hand massage. This highlights that focused touch may be beneficial when first engaging highly self-critical individuals with specific interventions.
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Affiliation(s)
- Frances A Maratos
- College of Life and Natural Sciences, University of Derby, England, UK.
| | - Joana Duarte
- Cognitive-Behavioural Research Centre, University of Coimbra, Portugal
| | | | - Kirsten McEwan
- College of Life and Natural Sciences, University of Derby, England, UK
| | - David Sheffield
- College of Life and Natural Sciences, University of Derby, England, UK
| | - Paul Gilbert
- College of Life and Natural Sciences, University of Derby, England, UK
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29
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Abstract
The primary intention of this study was to determine whether salivary alpha-amylase (sAA) factors or the Dental Anxiety Scale (DAS) was a better predictor of dental extraction pain. This study followed a cross-sectional design and included a convenience sample (n = 23) recruited from an outpatient oral surgery clinic. While waiting for their scheduled appointments, consenting patients completed both basic demographic/medical history questionnaires and Corah's DAS as well as submitted sublingual saliva samples. After their extractions, patients marked visual analog scales (VAS) to indicate the intensity of their intraoperative discomfort. Results of this study confirm that there is a relationship between a patient's dental anxiety and intraoperative extraction pain (r[21] = .47, P = .02). This study did not find that preoperative sAA factors (concentration and output rate) were related to either VAS extraction pain or DAS score. A strong positive relationship was observed between the concentration of sAA and the rate of sAA output (r[21] = .81, P < .001). Based on the results of our study, we conclude that dental anxiety has a moderate but significant correlation with intraoperative dental pain. Factors of sAA do not appear to be predictive of this experience. Therefore, simply assessing an anxious patient may be the best indication of that patient's extraction pain.
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Affiliation(s)
- Kevin C Lee
- Center for Oral, Facial and Head Pain, College of Dental Medicine, Columbia University, New York, New York
| | - Jennifer P Bassiur
- Center for Oral, Facial and Head Pain, College of Dental Medicine, Columbia University, New York, New York
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30
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Kliewer W. Victimization and Biological Stress Responses in Urban Adolescents: Emotion Regulation as a Moderator. J Youth Adolesc 2016; 45:1812-23. [PMID: 26676938 PMCID: PMC5826760 DOI: 10.1007/s10964-015-0398-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 12/07/2015] [Indexed: 12/19/2022]
Abstract
Associations between urban adolescents' victimization experiences and biological stress responses were examined, as well as emotion regulation as a moderator of these associations. Data from a 4-wave longitudinal study with a low-income, community-based sample (n = 242; 91 % African American; 57 % female; M = 11.98, SD = 1.56 years at baseline) revealed that victimization, assessed over 3 study waves, was associated with an attenuated cortisol response to a stress interview at the final study wave, indicating that responses of the Hypothalamus-Pituitary-Adrenal (HPA) axis were dysregulated. Cortisol responses were moderated by caregiver-reported adolescent emotion regulation, suggesting that this modifiable protective factor that is taught in many school-based prevention programs could help reduce harm associated with HPA axis dysregulation linked to victimization.
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Affiliation(s)
- Wendy Kliewer
- Department of Psychology, Virginia Commonwealth University, PO Box 842018, Richmond, VA, 23284-2018, USA.
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31
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Karim Z, Holmes M, Orfila C. Inhibitory effect of chlorogenic acid on digestion of potato starch. Food Chem 2016; 217:498-504. [PMID: 27664664 DOI: 10.1016/j.foodchem.2016.08.058] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 07/11/2016] [Accepted: 08/19/2016] [Indexed: 01/13/2023]
Abstract
The effect of the chlorogenic acid isomer 5-O-caffeoylquinic acid (5-CQA) on digestion of potato starch by porcine pancreatic alpha amylase (PPAA) was investigated using isolated starch and cooked potato tuber as substrates. In vitro digestion was performed on five varieties of potato with varying phenolic content. Co- and pre-incubation of PPAA with 5-CQA significantly reduced PPAA activity in a dose dependent manner with an IC50 value of about 2mgmL(-1). Lineweaver-Burk plots indicated that 5-CQA exerts a mixed type inhibition as km increased and Vmax decreased. The total polyphenol content (TPC) of peeled tuber tissue ranged from 320.59 to 528.94mg 100g(-1)dry weight (DW) in raw tubers and 282.03-543.96mg 100g(-1)DW in cooked tubers. With the exception of Désirée, TPC and 5-CQA levels decreased after cooking. Principle component analysis indicated that digestibility is affected by multiple factors including phenolic, dry matter and starch content.
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Affiliation(s)
- Zida Karim
- Nutrition and Public Health Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Melvin Holmes
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Caroline Orfila
- Nutrition and Public Health Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
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32
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Tarbell SE, Millar A, Laudenslager M, Palmer C, Fortunato JE. Anxiety and physiological responses to the Trier Social Stress Test for Children in adolescents with cyclic vomiting syndrome. Auton Neurosci 2017; 202:79-85. [PMID: 27554769 DOI: 10.1016/j.autneu.2016.08.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 07/13/2016] [Accepted: 08/14/2016] [Indexed: 01/01/2023]
Abstract
This study compared anxiety and physiological responses during the Trier Social Stress Test for Children (TSST-C) in adolescents. 38 subjects (26 females) were enrolled: 11 cyclic vomiting syndrome (CVS), 11 anxiety, and 16 controls. Salivary cortisol, α-amylase and heart rate variability (HRV) were assessed during the TSST-C. Anxiety was measured by the Screen for Childhood Anxiety Related Emotional Disorders (SCARED), Anxiety Disorders Interview Schedule, and State-Trait Anxiety Inventory for Children (STAI-C). 11 anxiety and 7 CVS subjects had ≥1 anxiety disorder. 82% in the anxiety and CVS groups met criteria for an anxiety disorder on the SCARED. Combining groups, cortisol increased from baseline to recovery during the TSST-C (p=0.0004) and the stressor to recovery (p=0.005). α-amylase did not differ during the TSST-C for the total sample, but increased for anxiety compared to controls from baseline to recovery (p=0.01). HRV decreased during the stressor (p=0.0001) and increased at recovery (p=0.004). No associations were found between biomarkers and trait anxiety. Associations were found between baseline HRV and pre-test state anxiety (r=-0.406, p=0.012) and between recovery HRV and post-test state anxiety (r=-0.501, p=0.002) for the total sample. Anxiety is prevalent in CVS warranting screening. HRV may serve as a biomarker for evaluating stress as a potential trigger for CVS episodes. State but not trait anxiety was associated with changes in HRV, suggesting acute anxiety may be more relevant in linking stress and CVS episodes.
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Ghobadi N, Ogino C, Yamabe K, Ohmura N. Characterizations of the submerged fermentation of Aspergillus oryzae using a Fullzone impeller in a stirred tank bioreactor. J Biosci Bioeng 2016; 123:101-108. [PMID: 27475924 DOI: 10.1016/j.jbiosc.2016.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 06/07/2016] [Accepted: 07/01/2016] [Indexed: 11/29/2022]
Abstract
A Fullzone (FZ) impeller was used in the first study of the characteristics involved in the fermentation of Aspergillus oryzae. Both the experimental and simulation results of this study revealed novel findings into the positive relationship between the global-axial mixing patterns of a FZ impeller and fermentation efficiency. The mixing results when using the FZ impeller compared with a double Rushton turbine (DRT) impeller indicated that the culture mixed by the FZ resulted in a more homogeneous medium with higher values for oxygen mass transfer, cell growth rate, and alpha amylase activity. The simulation of fluid flow was done in a laminar regime using a two-fluid model. According to the simulation results, the maximum shear stress when using the DRT was higher than that with the FZ at the same power input (Pin). A high degree of local shear stress and the shear rate near the turbine blade of the DRT resulted in cell damage and a reduction in the enzyme activity, biomass, pellet diameter, and dissolved oxygen concentration. Calculations using the Brown equation showed that the maximum and average shear rates during mixing with the FZ impeller were lower than that when using the DRT. Therefore, the use of an FZ impeller, particularly at low Pin, enhanced the cultivation of A. oryzae.
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Affiliation(s)
- Narges Ghobadi
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe 657-8501, Japan
| | - Chiaki Ogino
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe 657-8501, Japan
| | - Kaoru Yamabe
- Division of Process Equipment, Kobelco Eco-Solutions, Co., Ltd., 19 Nijima, Harimacho, Kakogun, Hyogo 675-0155, Japan
| | - Naoto Ohmura
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe 657-8501, Japan.
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Karimi M, Biria D. The synergetic effect of starch and alpha amylase on the biodegradation of n-alkanes. Chemosphere 2016; 152:166-172. [PMID: 26971168 DOI: 10.1016/j.chemosphere.2016.02.120] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 02/22/2016] [Accepted: 02/28/2016] [Indexed: 06/05/2023]
Abstract
The impact of adding soluble starch on biodegradation of n-alkanes (C10-C14) by Bacillus subtilis TB1 was investigated. Gas chromatography was employed to measure the residual hydrocarbons in the system. It was observed that the efficiency of biodegradation improved with the presence of starch and the obtained residual hydrocarbons in the system were 53% less than the samples without starch. The produced bacterial enzymes were studied through electrophoresis and reverse zymography for explaining the observations. The results indicated that the produced amylase by the bacteria can degrade hydrocarbons and the same was obtained by the application of a commercial alpha amylase sample. In addition, in silico docking of alpha-amylase with n-alkanes with different molecular weights was studied by Molegro virtual docker which showed high negative binding energies and further substantiated the experimental observations. Overall, the findings confirmed the catalytic effect of alpha amylase on n-alkanes degradation.
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Affiliation(s)
- M Karimi
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Hezar Jarib Ave., Isfahan, Iran
| | - D Biria
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Hezar Jarib Ave., Isfahan, Iran.
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Rosenkranz MA, Lutz A, Perlman DM, Bachhuber DR, Schuyler BS, MacCoon DG, Davidson RJ. Reduced stress and inflammatory responsiveness in experienced meditators compared to a matched healthy control group. Psychoneuroendocrinology 2016; 68:117-25. [PMID: 26970711 DOI: 10.1016/j.psyneuen.2016.02.013] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 01/28/2016] [Accepted: 02/16/2016] [Indexed: 12/17/2022]
Abstract
Psychological stress is a major contributor to symptom exacerbation across many chronic inflammatory conditions and can acutely provoke increases in inflammation in healthy individuals. With the rise in rates of inflammation-related medical conditions, evidence for behavioral approaches that reduce stress reactivity is of value. Here, we compare 31 experienced meditators, with an average of approximately 9000 lifetime hours of meditation practice (M age=51years) to an age- and sex-matched control group (n=37; M age=48years) on measures of stress- and inflammatory responsivity, and measures of psychological health. The Trier Social Stress Test (TSST) was used to induce psychological stress and a neurogenic inflammatory response was produced using topical application of capsaicin cream to forearm skin. Size of the capsaicin-induced flare response and increase in salivary cortisol and alpha amylase were used to quantify the magnitude of inflammatory and stress responses, respectively. Results show that experienced meditators have lower TSST-evoked cortisol (62.62±2.52 vs. 70.38±2.33; p<.05) and perceived stress (4.18±.41 vs. 5.56±.30; p<.01), as well as a smaller neurogenic inflammatory response (81.55±4.6 vs. 96.76±4.26; p<.05), compared to the control group. Moreover, experienced meditators reported higher levels of psychological factors associated with wellbeing and resilience. These results suggest that the long-term practice of meditation may reduce stress reactivity and could be of therapeutic benefit in chronic inflammatory conditions characterized by neurogenic inflammation.
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Kakarla L, Katragadda SB, Tiwari AK, Kotamraju KS, Madhusudana K, Kumar DA, Botlagunta M. Free radical scavenging, α-glucosidase inhibitory and anti-inflammatory constituents from Indian sedges, Cyperus scariosus R.Br and Cyperus rotundus L. Pharmacogn Mag 2016; 12:S488-S496. [PMID: 27761080 PMCID: PMC5068129 DOI: 10.4103/0973-1296.191467] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Cyperus scariosus R. Br and Cyperus rotundus L are widely used in ayurvedic preparation for the treatment of diabetes and other diseases. The early literature, so far, does not indicate the presence of any bioactive principle isolated from these plants. OBJECTIVE To identify free radical scavenging, anti-diabetic and anti- inflammatory principles from these two species. MATERIALS AND METHODS The bioassay guided fractionation and isolation of active constituents was done by chromatographic techniques. They also evaluated their anti-oxidant activity by DPPH and ABTS. The anti-diabetic activity was screened by α- glucosidase and α- amylase assays. Also, the further evaluation of in vitro anti-inflammatory activity using THP-1 monocytic cells and in vivo anti- inflammatory activity, was confirmed by carrageenan induced rat paw edema as model. RESULTS The activity guided isolation led to isolation of twelve compounds Which are: Stigmasterol[1], β- sitosterol[2], Lupeol[3], Gallic acid[4], Quercetin[5], β- amyrin[6], Oleanolic acid[7], β- amyrin acetate[8], 4- hydroxyl butyl cinnamate[9], 4- hydroxyl cinnamic acid[10], Caffeic acid,[11] and Kaempferol[12] respectively. Among the isolates, the compounds 4 and 5 displayed potent radical scavenging activity with an IC50 values of 0.43 and 0.067 ΅g/ml. The compounds 4, 5 and 10 showed significant anti-diabetic activities. while lupeol[3] showed potent IL-1 β activity inhibition in THP-1 monocytic cells and also displayed significant (p<0.0025) in vivo anti-inflammatory activity. CONCLUSION Inbrief, we isolated twelve compounds from both the species. Collectively, our results suggested that aromatic compounds showed good anti-oxidant and anti-diabetic activities. SUMMARY The study investigates the free radical scavenging, α-glucosidase inhibitory and anti-inflammatory effects of constituents isolated from Indian sedges viz. C. scariosus and C. rotundus. The results indicated that phenolic compounds displayed potent fee radical scavenging activty and alpha-glucosidase inhibition activity. While terpene constituent, Lupeol[3] showed good IL-1β activity inhibition in THP-1 monocytic cells and also displayed significant (p<0.0025) in vivo anti inflammatory activity in carrageenan induced rat paw edema. However, further studies are required to know the exact molecular mechanism. Abbreviations used: DPPH: 2,2- Diphenyl-1-1-picryl hydrazyl, ABTS: 2,2-Azinobis-3-ethylbenzo thiazoline-6-sulfonic acid, THP-1: Human leukaemia monocytic cell line, IL-1β: Interleukin-1β, IC50-Inhibitory concentration 50%.
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Affiliation(s)
- Lavanya Kakarla
- Biomedical Research Laboratory, Department of Biotechnology, K L E F University, Vaddeswaram, Guntur, Andhra Pradesh, India
| | - Suresh Babu Katragadda
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, India
| | - Ashok K Tiwari
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, India
| | - K Srigiridhar Kotamraju
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, India
| | - K Madhusudana
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, India
| | - D Anand Kumar
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, India
| | - Mahendran Botlagunta
- Biomedical Research Laboratory, Department of Biotechnology, K L E F University, Vaddeswaram, Guntur, Andhra Pradesh, India
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Duarte J, McEwan K, Barnes C, Gilbert P, Maratos FA. Do therapeutic imagery practices affect physiological and emotional indicators of threat in high self-critics? Psychol Psychother 2015; 88:270-84. [PMID: 25347984 DOI: 10.1111/papt.12043] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 09/11/2014] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Imagery is known to be a powerful means of stimulating various physiological processes and is increasingly used within standard psychological therapies. Compassion-focused imagery (CFI) has been used to stimulate affiliative emotion in people with mental health problems. However, evidence suggests that self-critical individuals may have particular difficulties in this domain with single trials. The aim of the present study was to further investigate the role of self-criticism in responsiveness to CFI by specifically pre-selecting participants based on trait self-criticism. DESIGN Using the Forms of Self-Criticism/Self-Reassuring Scale, 29 individuals from a total sample of 139 were pre-selected to determine how self-criticism impacts upon an initial instance of imagery. METHODS All participants took part in three activities: a control imagery intervention (useable data N = 25), a standard CFI intervention (useable data N = 25), and a non-intervention control (useable data N = 24). Physiological measurements (alpha amylase) as well as questionnaire measures of emotional responding (i.e., the Positive and Negative Affect Schedule, the Types of Positive Affect Scale, and the State Adult Attachment Scale) were taken before and after the different interventions. RESULTS Following both imagery interventions, repeated measures analyses revealed that alpha amylase increased significantly for high self-critics compared with low self-critics. High self-critics (HSC) also reported greater insecurity on entering the imagery session and more negative CFI experiences compared with low self-critics. CONCLUSIONS Data demonstrate that HSC respond negatively to imagery interventions in a single trial. This highlights that imagery focused therapies (e.g., CFI) need interventions that manage fears, blocks, and resistances to the techniques, particularly in HSC. PRACTITIONER POINTS An initial instance of imagery (e.g., CFI) can be frightening for people who have a tendency to be self-critical. This research provides examples of physiological and emotional responses to imagery type therapies in high and low self-critics, and associated clinical implications. Therapists may find it helpful to be mindful that when introducing imagery based therapies, highly self-critical patients need interventions that manage fears, blocks, and resistances to the techniques.
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Affiliation(s)
- Joana Duarte
- Cognitive and Behavioural Centre for Research and Intervention, University of Coimbra, Portugal
| | - Kirsten McEwan
- Institute of Primary Care and Population Health, School of Medicine, Cardiff University, Wales, UK
| | - Christopher Barnes
- Department of Psychology, College of Life and Natural Sciences, University of Derby, UK
| | - Paul Gilbert
- Department of Psychology, College of Life and Natural Sciences, University of Derby, UK
| | - Frances A Maratos
- Department of Psychology, College of Life and Natural Sciences, University of Derby, UK
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Aleid SM, AL-Hulaibi AA, Ghoush MA, Al-Shathri AA. Enhancing arabic bread quality and shelf life stability using bread improvers. J Food Sci Technol 2015; 52:4761-72. [PMID: 26243897 PMCID: PMC4519505 DOI: 10.1007/s13197-014-1618-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/28/2014] [Accepted: 10/21/2014] [Indexed: 10/24/2022]
Abstract
Arabic breads is produced mainly from hard red winter wheat (HRWW) and have relatively little crumb, dense texture, form pocket and are often round with golden brown crust color. The objectives of this research were to investigate the effect of different bread improvers combinations addition in enhancing the quality parameters of Arabic bread. Therefore, the ability of Arabic bread for rolling, folding and overall quality were evaluated during the Arabic bread storage period for 2 days. It was found that there was significant effect of bread improvers combinations (Arabic gum "AG" * Mongglycerides "MG" *alpha-amylase) addition on the ability of Arabic bread for rolling and folding on the second day (P ≤ 0.1). The highest white Arabic bread quality was obtained significantly from addition of low AG, high of MG and high alpha-amylase combination and high AG, low of MG and high alpha-amylase combination. While, low of AG, high of MG and low alpha-amylase combination and high of AG, high of MG and low alpha-amylase combination significantly exhibited the highest overall quality for the Arabic bread made from whole flour.
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Affiliation(s)
- S M. Aleid
- />Department of Food and Nutrition Sciences, King Faisal University, PO Box 400, Alahsa, 31982 Saudi Arabia
| | | | - M Abu Ghoush
- />Department of Clinical Nutrition and Dietetics, The Hashemite University, Zarga, Jordan
| | - A A Al-Shathri
- />Department of Food and Nutrition Sciences, King Faisal University, PO Box 400, Alahsa, 31982 Saudi Arabia
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Margittai Z, Strombach T, van Wingerden M, Joëls M, Schwabe L, Kalenscher T. A friend in need: Time-dependent effects of stress on social discounting in men. Horm Behav 2015; 73:75-82. [PMID: 26122295 DOI: 10.1016/j.yhbeh.2015.05.019] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 04/27/2015] [Accepted: 05/30/2015] [Indexed: 01/15/2023]
Abstract
Stress is often associated with a tend-and-befriend response, a putative coping mechanism where people behave generously towards others in order to invest in social relationships to seek comfort and mutual protection. However, this increase in generosity is expected to be directed only towards a delimited number of socially close, but not distant individuals, because it would be maladaptive to befriend everyone alike. In addition, the endocrinological stress response follows a distinct temporal pattern, and it is believed that tend-and-befriend tendencies can be observed mainly under acute stress. By contrast, the aftermath (>1h after) of stress is associated with endocrinological regulatory processes that are proposed to cause increased executive control and reduced emotional reactivity, possibly eliminating the need to tend-and-befriend. In the present experiment, we set out to investigate how these changes immediately and >1h after a stressful experience affect social-distance-dependent generosity levels, a phenomenon called social discounting. We hypothesized that stress has a time-dependent effect on social discounting, with decisions made shortly after (20min), but not 90min after stress showing increased generosity particularly to close others. We found that men tested 20min after stressor onset indeed showed increased generosity towards close but not distant others compared to non-stressed men or men tested 90min after stressor onset. These findings contribute to our understanding on how stress affects prosocial behavior by highlighting the importance of social closeness and the timing of stress relative to the decision as modulating factors in this type of decision making in men.
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Affiliation(s)
- Z Margittai
- Comparative Psychology, University of Düsseldorf, Germany.
| | - T Strombach
- Comparative Psychology, University of Düsseldorf, Germany.
| | | | - M Joëls
- Dept. Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands.
| | - L Schwabe
- Department of Cognitive Psychology, Institute for Psychology, University of Hamburg, Germany.
| | - T Kalenscher
- Comparative Psychology, University of Düsseldorf, Germany.
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Kuebler U, von Känel R, Heimgartner N, Zuccarella-Hackl C, Stirnimann G, Ehlert U, Wirtz PH. Norepinephrine infusion with and without alpha-adrenergic blockade by phentolamine increases salivary alpha amylase in healthy men. Psychoneuroendocrinology 2014; 49:290-8. [PMID: 25128931 DOI: 10.1016/j.psyneuen.2014.07.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 07/23/2014] [Accepted: 07/23/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Mental stress reliably induces increases in salivary alpha amylase (sAA), a suggested surrogate marker for sympathetic nervous system (SNS) reactivity. While stress-induced sAA increases correlate with norepinephrine (NE) secretion, a potential mediating role of noradrenergic mechanisms remains unclear. In this study, we investigated for the first time in humans whether a NE-stress-reactivity mimicking NE-infusion with and without alpha-adrenergic blockade by phentolamine would induce changes in sAA. METHODS In a single-blind placebo-controlled within-subjects design, 21 healthy men (29-66 years) took part in three different experimental trials varying in terms of substance infusion with a 1-min first infusion followed by a 15-min second infusion: saline-infusion (trial-1), NE-infusion (5 μg/min) without alpha-adrenergic blockade (trial-2), and with phentolamine-induced non-selective blockade of alpha1- and alpha2-adrenergic receptors (trial-3). Saliva samples were collected immediately before, during, and several times after substance infusion in addition to blood pressure and heart rate readings. RESULTS Experimental trials significantly differed in sAA reactivity to substance-infusion (p=.001) with higher sAA reactivity following NE-infusion with (trial-3; p=.001) and without alpha-adrenergic-blockade (trial-2; p=.004) as compared to placebo-infusion (trial-1); sAA infusion reactivity did not differ between trial-2 and trial-3 (p=.29). Effective phentolamine application was verified by blood pressure and heart rate infusion reactivity. Salivary cortisol was not affected by NE, either with or without alpha-adrenergic-blockade. CONCLUSIONS We found that NE-infusion stimulates sAA secretion, regardless of co-administered non-selective alpha-adrenergic blockade by phentolamine, suggesting that the mechanism underlying stress-induced sAA increases may involve NE.
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Affiliation(s)
- Ulrike Kuebler
- Department of Clinical Psychology and Psychotherapy, University of Zurich, Zurich, Switzerland
| | - Roland von Känel
- Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland; Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Nadja Heimgartner
- Department of Clinical Psychology and Psychotherapy, University of Zurich, Zurich, Switzerland; Department of Clinical Psychology and Psychotherapy, University of Basel, Basel, Switzerland
| | | | - Guido Stirnimann
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Ulrike Ehlert
- Department of Clinical Psychology and Psychotherapy, University of Zurich, Zurich, Switzerland
| | - Petra H Wirtz
- Biological and Health Psychology, University of Bern, Bern, Switzerland.
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Warren FJ, Zhang B, Waltzer G, Gidley MJ, Dhital S. The interplay of α-amylase and amyloglucosidase activities on the digestion of starch in in vitro enzymic systems. Carbohydr Polym 2014; 117:192-200. [PMID: 25498625 DOI: 10.1016/j.carbpol.2014.09.043] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/08/2014] [Accepted: 09/08/2014] [Indexed: 11/25/2022]
Abstract
In vitro hydrolysis assays are a key tool in understanding differences in rate and extent of digestion of starchy foods. They offer a greater degree of simplicity and flexibility than dynamic in vitro models or in vivo experiments for quantifiable, mechanistic exploration of starch digestion. In the present work the influence of α-amylase and amyloglucosidase activities on the digestion of maize and potato starch granules was measured using both glucose and reducing sugar assays. Data were analysed through initial rates of digestion, and by 1st order kinetics, utilising logarithm of slope (LOS) plots. The rate and extent of starch digestion was dependent on the activities of both enzymes and the type of starch used. Potato required more enzyme than maize to achieve logarithmic reaction curves, and complete digestion. The results allow targeted design of starch digestion experiments through a thorough understanding of the contributions of α-amylase and amyloglucosidase to digestion rates.
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Affiliation(s)
- Frederick J Warren
- Centre for Nutrition and Food Sciences, ARC Centre of Excellence in Plant Cell Walls, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, Brisbane 4072, QLD, Australia
| | - Bin Zhang
- Centre for Nutrition and Food Sciences, ARC Centre of Excellence in Plant Cell Walls, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, Brisbane 4072, QLD, Australia
| | - Gina Waltzer
- Centre for Nutrition and Food Sciences, ARC Centre of Excellence in Plant Cell Walls, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, Brisbane 4072, QLD, Australia
| | - Michael J Gidley
- Centre for Nutrition and Food Sciences, ARC Centre of Excellence in Plant Cell Walls, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, Brisbane 4072, QLD, Australia
| | - Sushil Dhital
- Centre for Nutrition and Food Sciences, ARC Centre of Excellence in Plant Cell Walls, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, Brisbane 4072, QLD, Australia.
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Bellamakondi PK, Godavarthi A, Ibrahim M. Anti-hyperglycemic activity of Caralluma umbellata Haw. ACTA ACUST UNITED AC 2014; 4:113-6. [PMID: 25337463 PMCID: PMC4204035 DOI: 10.15171/bi.2014.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 09/14/2014] [Accepted: 09/17/2014] [Indexed: 11/09/2022]
Abstract
INTRODUCTION Hyperglycemia is a serious health problem prevailing in diabetes patients. Treatment for hyperglycemia by various oral anti-hyperglycemic drugs have associated with side effects, hence there is growing awareness towards the use of herbal products due to their efficacy, minimal side effects and relatively low costs. This study is designed to evaluate anti-hyperglycemic activity of Caralluma umbellata Haw, which is used as a traditional medicinal plant all over India through in vitro studies. METHODS Methanolic, aqueous and hydro methanolic extracts of Caralluma umbellata were prepared and studied for their anti hyperglycemic activity. The extracts were evaluated for glucose uptake in L6 myotubes in vitro. In addition, the inhibitory activity against alpha amylase and pancreatic lipase was also measured. RESULTS The methanolic extract (MCU) was found to have significant glucose uptake. Further, MCU was also found to have promising role in inhibiting alpha amylase and pancreatic lipase. CONCLUSION The results of present study shows Caralluma umbellata has potential antidiabetic property, thus providing a further scope for study in animal model and understanding the mechanism of action.
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Huma T, Maryam A, Rehman SU, Qamar MTU, Shaheen T, Haque A, Shaheen B. Phylogenetic and Comparative Sequence Analysis of Thermostable Alpha Amylases of kingdom Archea, Prokaryotes and Eukaryotes. Bioinformation 2014; 10:443-8. [PMID: 25187685 PMCID: PMC4135293 DOI: 10.6026/97320630010443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 06/27/2014] [Indexed: 11/23/2022] Open
Abstract
Alpha amylase family is generally defined as a group of enzymes that can hydrolyse and transglycosylase α-(1, 4) or α-(1, 6) glycosidic bonds along with the preservation of anomeric configuration. For the comparative analysis of alpha amylase family, nucleotide sequences of seven thermo stable organisms of Kingdom Archea i.e. Pyrococcus furiosus (100-105°C), Kingdom Prokaryotes i.e. Bacillus licheniformis (90-95°C), Geobacillus stearothermophilus (75°C), Bacillus amyloliquefaciens (72°C), Bacillus subtilis (70°C) and Bacillus KSM K38 (55°C) and Eukaryotes i.e. Aspergillus oryzae (60°C) were selected from NCBI. Primary structure composition analysis and Conserved sequence analysis were conducted through Bio Edit tools. Results from BioEdit shown only three conserved regions of base pairs and least similarity in MSA of the above mentioned alpha amylases. In Mega 5.1 Phylogeny of thermo stable alpha amylases of Kingdom Archea, Prokaryotes and Eukaryote was handled by Neighbor-Joining (NJ) algorithm. Mega 5.1 phylogenetic results suggested that alpha amylases of thermo stable organisms i.e. Pyrococcus furiosus (100-105°C), Bacillus licheniformis (90-95°C), Geobacillus stearothermophilus (75°C) and Bacillus amyloliquefaciens (72°C) are more distantly related as compared to less thermo stable organisms. By keeping in mind the characteristics of most thermo stable alpha amylases novel and improved features can be introduced in less thermo stable alpha amylases so that they become more thermo tolerant and productive for industry.
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Affiliation(s)
- Tayyaba Huma
- Department of Bioinformatics and Biotechnology, Government College University (GCUF), 38000, Faisalabad, Punjab, Pakistan
| | - Arooma Maryam
- Department of Bioinformatics and Biotechnology, Government College University (GCUF), 38000, Faisalabad, Punjab, Pakistan
| | - Shahid Ur Rehman
- Department of Poultry Sciences, University of Agriculture (UAF), 38000, Faisalabad, Punjab, Pakistan
| | - Muhammad Tahir Ul Qamar
- Department of Bioinformatics and Biotechnology, Government College University (GCUF), 38000, Faisalabad, Punjab, Pakistan
| | - Tayyaba Shaheen
- Department of Bioinformatics and Biotechnology, Government College University (GCUF), 38000, Faisalabad, Punjab, Pakistan
| | - Asma Haque
- Department of Bioinformatics and Biotechnology, Government College University (GCUF), 38000, Faisalabad, Punjab, Pakistan
| | - Bushra Shaheen
- Department of Bioinformatics and Biotechnology, Government College University (GCUF), 38000, Faisalabad, Punjab, Pakistan
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Kajaria D, Ranjana, Tripathi J, Tripathi YB, Tiwari S. In-vitro α amylase and glycosidase inhibitory effect of ethanolic extract of antiasthmatic drug - Shirishadi. J Adv Pharm Technol Res 2013; 4:206-9. [PMID: 24350051 PMCID: PMC3853697 DOI: 10.4103/2231-4040.121415] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Asthma and diabetes have strong relationship; both are cause and effect of each other. Oxidative stress due to bronchial asthma may cause insulin resistance whereas lack of proper insulin can cause defective smooth muscle relaxant. There is no single medicine available that can manage both diseases, rather the mainstay treatment of bronchial asthma causes hyperglycemia. Keeping this problem in focus, in this study the hypoglycemic effect of an indigenous antiasthmatic Ayurvedic drug Shirishadi was evaluated. Pancreatic alpha amylase and glucosidase inhibitors offer an effective strategy to lower the level of post prandial hyperglycemia via control of starch breakdown. For evaluation of hypoglycemic activity of drug, in-vitro alpha amylase and alpha glucosidase enzyme inhibition was calculated. Ethanolic extract of compound showed 76.40% + 0.88% reduction in alpha amylase activity and 63.85% + 0.36% in alpha glucosidase activity with IC50 0.68 mg/ml and 2.89 mg/ml, respectively. This study suggests that the ethanolic extract of Shirishadi polyherbal compound effectively acts as alpha amylase and glucosidase inhibitor leading to a reduction in starch hydrolysis and hence acts as antiasthmatic as well as hypoglycemic drug.
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Affiliation(s)
- Divya Kajaria
- Department of Kayachikitsa, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ranjana
- Department of Medicinal Chemistry, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Jyotishankar Tripathi
- Department of Kayachikitsa, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Yamini Bhushan Tripathi
- Department of Medicinal Chemistry, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Srikant Tiwari
- Department of Kayachikitsa, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Talekar S, Pandharbale A, Ladole M, Nadar S, Mulla M, Japhalekar K, Pattankude K, Arage D. Carrier free co-immobilization of alpha amylase, glucoamylase and pullulanase as combined cross-linked enzyme aggregates (combi-CLEAs): a tri-enzyme biocatalyst with one pot starch hydrolytic activity. Bioresour Technol 2013; 147:269-275. [PMID: 23999260 DOI: 10.1016/j.biortech.2013.08.035] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Revised: 08/02/2013] [Accepted: 08/05/2013] [Indexed: 06/02/2023]
Abstract
A tri-enzyme biocatalyst "combi-CLEAs" with starch hydrolytic activity was prepared from commercially available alpha amylase, glucoamylase and pullulanase preparations by aggregating enzymes with ammonium sulphate followed by cross-linking formed aggregates for 4.5h with 40 mM glutaraldehyde. The effects of precipitant type and cross-linking were studied and the biocatalyst was characterized. Scanning electron microscopy analysis showed that tri-enzyme biocatalyst was of spherical structure. For one pot starch hydrolytic activity, shift in optimum pH from 6 to 7 and temperature from 65 to 75 °C were observed after co-immobilization of enzymes. After one pot starch hydrolysis reaction in batch mode, 100%, 60% and 40% conversions were obtained with combi-CLEAs, separate CLEAs mixture and free enzyme mixture, respectively. Co-immobilization also enhanced the thermal stability of enzymes. Finally, the catalytic activity of enzymes in combi-CLEAs during one pot starch hydrolysis was well maintained up to five cycles without performance changes.
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Affiliation(s)
- Sachin Talekar
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416 234, India.
| | - Amol Pandharbale
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune 411 008, India
| | - Mayur Ladole
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416 234, India
| | - Shamraja Nadar
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416 234, India
| | - Mosin Mulla
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416 234, India
| | - Kshitija Japhalekar
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416 234, India
| | - Kishori Pattankude
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416 234, India
| | - Devika Arage
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416 234, India
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Abstract
INTRODUCTION We describe the case of an adult man aged 49, without personal antecedents, or family psychiatric history, treated for bipolar disorder since 1995 and stabilised in the last 8 years by valproic acid, who presented in January 2010 an acute drug-induced pancreatitis. Drug-induced pancreatitis has been described since 1955. It may be induced by more than 260 various molecules, as well as by valproic acid, which remains underreported in the literature because there is a problem of imputability. BACKGROUND The prevalence of acute drug-induced pancreatitis is set between 1 and 2 %. However, it must remain as an exclusion diagnosis after conducting an exhaustive etiological investigation that will, notably, eliminate bilary and alcoholic causes. The most incriminated drugs are the inhibitors of the conversion enzyme, sulfa drugs, non-steroidal anti-inflammatory, diuretics and anticonvulsants, including valproic acid. In Tunisia, the prescription of valproic acid is increasing in bipolar disorder therapy because it is known for its weak toxicity and easy handling. CASE REPORT The case of our patient, who suffers from an acute Balthazar stage C pancreatitis with severe evolution after the drug was stopped, the imputability of valproic acid was considered strong and the collegial decision between the surgery, pharmacovigilance and psychiatry services maintained the drug-induced origin and consequently stopped the valproic acid. DISCUSSION This case supports the idea that acute pancreatitis may be induced by valproic acid, even after a prescription lasting for a long period of time, it has no predictable factors and is totally independent of the drug-related dose and of depakine blood levels. There are no predictive factors to the present day, but the evolution is generally good except in rare cases where it may be dangerous. This leads us to think of bipolar patients who are found within weak grounds, such as alcoholics, cancer and HIV positive patients.
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Affiliation(s)
- R Jomli
- Service de psychiatrie A, hôpital Razi, Manouba, 2010 Tunis, Tunisie.
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Ashok Kumar BS, Lakshman K, Nandeesh R, Arun Kumar PA, Manoj B, Kumar V, Sheshadri Shekar D. In vitro alpha-amylase inhibition and in vivo antioxidant potential of Amaranthus spinosus in alloxan-induced oxidative stress in diabetic rats. Saudi J Biol Sci 2010; 18:1-5. [PMID: 23961097 DOI: 10.1016/j.sjbs.2010.08.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 08/18/2010] [Accepted: 08/27/2010] [Indexed: 11/30/2022] Open
Abstract
Amaranthus spinosus Linn. (Amaranthaceae), commonly known as "Mulluharivesoppu" in Kannada, is used in the Indian traditional system of medicine for the treatment of diabetes. The present study deals with the scientific evaluation of alpha amylase and the antioxidant potential of methanol extract of A. spinosus (MEAS). The aim of this study was to investigate in vitro alpha-amylase enzyme inhibition by CNPG3 (2-chloro-4-nitrophenol α-d-maltotrioside) and in vivo antioxidant potential of malondialdehyde (MDA), glutathione (GSH), catalase (CAT) and total thiols (TT) in alloxan-induced diabetic rats of a methanolic extract of A. spinosus. Blood sugar was also determined in MEAS-treated alloxan-induced diabetic rats. MEAS showed significant inhibition of alpha-amylase activity and IC50 46.02 μg/ml. Oral administration of MEAS (200 and 400 mg/kg) for 15 days showed significant reduction in the elevated blood glucose, MDA and restores GSH, CAT and TT levels as compared with a diabetic control. The present study provides evidence that the methanolic extract of A. spinosus has potent alpha amylase, anti-diabetic and antioxidant activities.
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Affiliation(s)
- B S Ashok Kumar
- Department of Pharmacognosy, Sri K.V. College of Pharmacy, Chickballapur 562101, Karnataka, India
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