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    Wyświetlanie 1-7 z 7
    Tytuł:
    The role of temperament in the changes of coping in Type 2 diabetes: direct and indirect relationships
    Autorzy:
    Kroemeke, Aleksandra
    Kwissa-Gajewska, Zuzanna
    Powiązania:
    https://bibliotekanauki.pl/articles/430728.pdf
    Data publikacji:
    2014-06-01
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    temperament
    coping
    cognitive appraisal
    emotions
    diabetes mellitus
    mediation
    Opis:
    The paper investigates whether the changes in cognitive appraisal and coping strategies related to initiation of insulin treatment onset mediate the effect of temperament on changes in positivity ratio among diabetic patients. Temperament, cognitive appraisal, coping strategies and positivity ratio (ratio of positive to negative affect) were assessed among 278 patients: just before conversion to insulin therapy and then one month later. Mediation analysis indicated that endurance and briskness were directly connected to changes in positivity ratio, whilst the effect of perseveration on positivity ratio was indirect via changes in negative appraisal, emotion- and problem-focused coping. The results confirm the stressful nature of the initiation of insulin treatment, and the assumptions of Lazarus’ model of stress and regulative role of temperament.
    Źródło:
    Polish Psychological Bulletin; 2014, 45, 2; 240-248
    0079-2993
    Pojawia się w:
    Polish Psychological Bulletin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Starch-iodine assay method underestimates alpha-amylase inhibitory potential of antioxidative compounds and extracts
    Autorzy:
    Ononamadu, C.J.
    Ezeigwe, O.C.
    Owolarafe, T.A.
    Ihegboro, G.O.
    Lawal, T.A.
    Salawu, K.
    Umeoguaju, U.F.
    Aminu, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096980.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    α-amylase inhibition
    starch-iodine
    diabetes mellitus
    limitations
    decolorization
    Opis:
    Starch-iodine assay method for the determination of α-amylase activity is also used in screening extracts for α-amylase inhibitors. However, there are indications that this method may not be appropriate for screening some classes of compounds or plant extracts. The present study investigated the limitation(s) of this method in screening plant extracts/compounds for α-amylase inhibition. A crude methanol extract (CR) of Dacryodes edulis, its solvent fractions (ethyl acetate (EA), aqueous methanol (AM), and hexane (HX)), quercetin (QC), and benzoic acid (BA) were used for this study. The phytochemical content and antioxidant activity were screened spectrophotometrically. α-Amylase inhibition (expressed in percentage and as IC50) was determined by starch-iodine method approach I and II (ST-ID I and ST-ID II, respectively) and dinitrosalicylic acid (DNSA) as the control method. The results showed that the extracts/compounds (AM, EA, and QC) with significantly high polyphenolic content, antioxidant activity, and starch-iodine complex decolorization effect yielded contrary results of α-amylase inhibition when the results of ST-ID I and II methods were compared to that of the DNSA method. The other test samples (CR, HX, and BA) yielded similar results for all the three methods. The result also showed the decolorization (%) of starch-iodine complex by the test samples correlated significantly (r = 0.877, P < 0.05) with DPPH reduction (%). In conclusion, the present study showed that the starch-iodine method is not appropriate for screening antioxidative extracts/compounds for α-amylase inhibitors – they decolorize the assay reagent in a manner similar to DPPH reduction and hence confound the result.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 1; 45-54
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Health enhancing coping as a mediator in relationships of positive emotionality and cognitive curiosity with quality of life among type 2 diabetes patients
    Autorzy:
    Kalka, Dorota
    Pawłowska, Monika
    Powiązania:
    https://bibliotekanauki.pl/articles/430491.pdf
    Data publikacji:
    2015-09-01
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diabetes mellitus type 2
    proactive coping
    positive emotionality
    cognitive curiosity
    Opis:
    The number of people suffering from type 2 diabetes has been growing recently. This chronic disease is connected with lower perceived quality of life and experiencing a lot of stressful situations. Some of these situations can be anticipated. Thus, it is possible to prepare oneself for future difficult situations by using proactive coping strategies. The aim of this research was to verify the level of satisfaction with various areas of life, the frequency of use of proactive coping strategies in the case of type 2 diabetes patients and healthy individuals, as well as mediation role of these strategies in the relationship between positive emotionality, cognitive curiosity and perceived quality of life. One hundred and seventy four persons took part in the research: 85 persons with diabetes and 89 healthy individuals. We used instruments with recognized psychometric properties: The Proactive Coping Inventory, The World Health Organization Quality of Life Instrument-BREF, PANAS Questionnaire and State-Trait Personality Inventory. The analysis of the results showed, among other things, that people suffering from type 2 diabetes are the least satisfied with their health, and the most with their treatment and knowledge about the disease. Healthy individuals are the most satisfied with the physical domain and one’s present life, whereas the least satisfied with the environmental domain. Both groups differ in terms of using proactive coping strategies. People with diabetes most often adopt a preventive strategy, whereas healthy individuals a reflective one. Two strategies turned out to be able to mediate in the relationship of positive emotionality and life satisfaction in the diabetes group. It was a strictly proactive and preventive coping strategy. No mediation effect was found in the group of healthy people. The results show that in the face of anticipated difficulties, people with type 2 diabetes try to protect their current resources by resorting to their existing knowledge, the level of which they are most satisfied with. The higher the positive emotionality/cognitive curiosity among people with type 2 diabetes, the higher their satisfaction with life, which is due to the fact, that they more frequently use proactive or preventive strategies to cope with stress.
    Źródło:
    Polish Psychological Bulletin; 2015, 46, 3; 362-375
    0079-2993
    Pojawia się w:
    Polish Psychological Bulletin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality of life and proactive coping with stress in a group of middle adulthood women with type 2 diabetes
    Autorzy:
    Kalka, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/430661.pdf
    Data publikacji:
    2016-09-01
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality of life
    diabetes mellitus type 2
    proactive coping
    middle adulthood
    Opis:
    In middle adulthood the intensity of stress is significantly higher than in the preceding developmental period. This stress is particularly significant in the case of chronically ill women, including those with type 2 diabetes. In this group, the disease-related stress intensifies the difficulties generated by the decrease of age-related organismic resources and in many instances impairs the quality of life. Therefore, an ability to cope with difficult situations is of crucial importance. The aim of the research was to estimate the general level of life-satisfaction, as well as the frequency and effectiveness of proactive coping strategies in a group of middle adulthood women with type 2 diabetes compared to women not suffering from diabetes. The study was conducted with methods which have acknowledged psychometric properties (SWLS, WHOQoL - BREF, PCI) as well as a survey collecting sociodemographic data. Women suffering from type 2 diabetes are less satisfied with their prior and current life, health and the physical dimension of their lives and environment. Only partially do they employ proactive coping strategies different from those used by the women from the healthy group. For life-satisfaction in its various aspects it is particularly important for the diabetic women to more often use the strategy of reflective coping and to less often seek emotional support while using the strategy of preventive coping or avoidance. The proactive strategies directed at anticipated stress are connected with the level of life-satisfaction and considered to be health resources.
    Źródło:
    Polish Psychological Bulletin; 2016, 47, 3; 327-337
    0079-2993
    Pojawia się w:
    Polish Psychological Bulletin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Maximizing performance of linear model predictive control of glycemia for T1DM subjects
    Autorzy:
    Dodek, Martin
    Miklovicová, Eva
    Powiązania:
    https://bibliotekanauki.pl/articles/2134885.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diabetes mellitus
    artificial pancreas
    glycemia control
    predictive control
    constrained optimization
    control feasibility
    Opis:
    The primary objective of this paper is the custom design of an effective, yet relatively easy-to-implement, predictive control algorithm to maintain normoglycemia in patients with type 1 diabetes. The proposed patient-tailorable empirical model featuring the separated feedback dynamics to model the effect of insulin administration and carbohydrate intake was proven to be suitable for the synthesis of a high-performance predictive control algorithm for artificial pancreas. Within the introduced linear model predictive control law, the constraints were applied to the manipulated variable in order to reflect the technical limitations of insulin pumps and the typical nonnegative nature of the insulin administration. Similarly, inequalities constraints for the controlled variable were also assumed while anticipating suppression of hypoglycemia states during the automated insulin treatment. However, the problem of control infeasibility has emerged, especially if one uses too tight constraints of the manipulated and the controlled variable concurrently. To this end, exploiting the Farkas lemma, it was possible to formulate the helper linear programming problem based on the solution of which this infeasibility could be identified and the optimality of the control could be restored by adapting the constraints. This adaptation of constraints is asymmetrical, thus one can force to fully avoid hypoglycemia at the expense of mild hyperglycemia. Finally, a series of comprehensive in-silico experiments were carried out to validate the presented control algorithm and the proposed improvements. These simulations also addressed the control robustness in terms of the intersubject variability and the meal announcements uncertainty.
    Źródło:
    Archives of Control Sciences; 2022, 32, 2; 305--333
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of porcine pancreas digestion parameters and islet histomorphology on islet isolation outcome
    Autorzy:
    Kinasiewicz, J.
    Sabat, M.
    Antosiak-Iwanska, M.
    Godlewska, E.
    Sitarek, E.
    Orlowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/30096.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pig islet
    pancreas
    pancreas digestion
    digestion parameter
    islet
    histomorphology
    islet isolation
    diabetes mellitus
    Opis:
    Transplantation of the pig islets of Langerhans is considered as the future treatment for patients suffering from type I diabetes mellitus. Despite the adaptation of modified Ricordi method and highly purified collagenase, the results of pancreas digestions are precarious. Selection of proper donor and optimal digestion procedure are fundamental. The aim of this study was to assess the impact of pancreas procuring parameters on pig islets yield. The pancreata were harvested from 69 market sows weighting over 150 kg. After intraductal injection of cold collagenase solution pancreata were transported in UW solution or under conditions of two layer method (TLM). In laboratory pancreata were digested at 37℃ according to Ricordi isolation method or stationary in the bottle. The particular parameters of isolation procedure were considered as substantial. Pig weight, volume of infused collagenase solution, TLM application and pancreas dividing before digestion positively affected islet yield. Additionally, the influence of pancreatic islet tissue histomorphology on isolation outcome was studied. Proper donor selection as well as adequate digestion parameters could improve pig islet recovery during islet isolation.
    Źródło:
    Polish Journal of Veterinary Sciences; 2011, 14, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Association of chosen microsatellite markers on chromosomes 10, 11p and 14q with IDDM susceptibility in the population of midwestern Poland
    Autorzy:
    Jungerman, M
    Fichna, P
    Powiązania:
    https://bibliotekanauki.pl/articles/2047273.pdf
    Data publikacji:
    1996
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microsatellite marker
    human disease
    chromosome
    statistical analysis
    Polska
    susceptibility
    insulin-dependent diabetes mellitus
    health control
    polymerase chain reaction
    Wielkopolska region
    diabetic child
    population
    Opis:
    In search for new markers of insulin-dependent diabetes (IDDM) susceptibility we studied the CATT tetranucleotide repeat in intron 1 of tyrosine hydroxylase (TH) gene on chromosome lip, the CA repeat at T-cell receptor a chain (TCRA) locus on chromosome 14q and two CA repeats at D10S211 and D10S213 loci in the chromosome 10 region containing glutamic acid decarboxylase (GAD2) gene. Alleles at these microsatellite loci were identified in a population of diabetic children and unrelated healthy controls originating from Wielkopolska, a midwestern region of Poland. We found significant association of certain alleles at TH, TCRA and D10S211 loci with diabetes in the population under study. On the contrary, none of the alleles at D10S213 locus was associated with the disease. Our findings indicate that typing of microsatellite markers may represent useful additional tool for identifying individuals at high risk of developing IDDM. Regarding loci on chromosome 10 our data and data published by other authors may suggest the extistence of two separate regions of association with IDDM susceptibility on this chromosome.
    Źródło:
    Journal of Applied Genetics; 1996, 37, 2; 217-228
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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