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    Tytuł:
    Analysis of the relationship between the enterprise and the environment in the context of managing the relational capital
    Analiza relacji przedsiębiorstwa z otoczeniem w kontekście zarządzania kapitałem relacyjnym
    Autorzy:
    Walecka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/295586.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Ekonomii i Zarządzania
    Tematy:
    relational capital
    RC management
    stakeholders
    kapitał relacyjny przedsiębiorstwa
    zarządzanie kapitałem relacyjnym
    interesariusze
    Opis:
    The aim of the paper is to present how important is the management of relational capital and present the results of empirical research constituting a part of a pilot study on relational capital management by Polish enterprises. They were conducted among managers of 82 enterprises operating in Poland. The research method was the diagnostic survey method (technique of the distributed questionnaire). The findings of the conducted research indicate that the surveyed companies establish numerous relationships with various groups of stakeholders. These relationships are characterised by different frequencies and varying degrees of significance from the point of view of development of the surveyed companies. The relationships are established in an intentional manner as well as a result of exploiting emerging opportunities. RC management, however, is not a strong point of the surveyed companies.
    Artykuł ma na celu prezentację jak ważny jest kapitał relacyjny przedsiębiorstwa oraz przedstawienie wyników badań pilotażowych dotyczących zarządzania tym kapitałem. Badania pilotażowe przeprowadzone zostały wśród kadry kierowniczej 82 przedsiębiorstw, zlokalizowanych na terenie Polski. Jako metodę badawczą wybrano metodę sondażu diagnostycznego, w ramach której wykorzystano technikę ankiety rozdawanej. Wyniki przeprowadzonych badań wskazują na nawiązywanie przez badane firmy licznych relacji z różnymi grupami interesariuszy. Relacje te cechują się różną częstotliwością i różnym stopniem istotności z punktu widzenia rozwoju badanych firm. Nawiązywane są one zarówno w sposób świadomy, jak i są wynikiem wykorzystywania pojawiających się szans. Zarządzanie kapitałem relacyjnym nie jest jednak mocną stroną respondowanych firm.
    Źródło:
    Management; 2018, 22, 2; 25-41
    1429-9321
    2299-193X
    Pojawia się w:
    Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rare diseases among topics on European congresses of radiology in 2003 and 2013
    Choroby rzadkie wśród tematów europejskich kongresów radiologii w 2003 i 2013 roku
    Autorzy:
    Skoczylas, M. M.
    Sawicki, M.
    Walecka, A.
    Rudnicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/135824.pdf
    Data publikacji:
    2016
    Wydawca:
    Wyższa Szkoła Techniczno-Ekonomiczna w Szczecinie
    Tematy:
    rare diseases
    radiology
    congresses as topic
    education
    history of medicine
    choroby rzadkie
    radiologia
    kongres radiologii
    edukacja
    historia medycyny
    Opis:
    Introduction and aim: Rare diseases constitute an issue requiring special attention in radiology. The aim of the study was to determine a frequency of topics of rare diseases (RDs) on European Congresses of Radiology (ECR) of European Society of Radiology (ESR) in Vienna. Material and methods: The study was based on two congresses of ESR in 2003 and 2013. The numbers of abstracts about RDs were counted as divided in a few sets: postgraduate educational programmes, scientific sessions and scientific exhibits. There was also a review of topics connected with RDs conducted. Results: Percentages of abstracts about RDs were as follows: postgraduate educational programme 4% in 2003 and 6% in 2013, scientific sessions 3,3% in 2003 and 3,6% in 2013 and scientific exhibits 5% in 2003. There were also some samples of RDs-connected topics. These reports concerned various diagnostic methods. Conclusion: RDs were present in many topics on ECR, but they were not of high frequency.
    Wstęp i cele: Choroby rzadkie stanowią zagadnienie wymagające szczególnej uwagi w radiologii. Celem badania była ocena częstości tematyki chorób rzadkich w pracach przedstawianych na Europejskich Kongresach Radiologii Europejskiego Towarzystwa Radiologii w Wiedniu. Materiał i metody: Przedmiotem badania były dwa kongresy ESR w 2003 i 2013 roku. Liczby streszczeń na temat chorób rzadkich pogrupowano w kilka zbiorów: podyplomowe programy edukacyjne, sesje naukowe i wystawy naukowe. Dokonano również przeglądu prac pod kątem tematyki związanej z chorobami rzadkimi. Wyniki: Odsetek streszczeń na temat chorób rzadkich był następujący: podyplomowe programy edukacyjne 4% w 2003 i 6% w 2013, sesje naukowe 3,3% w 2003 i 3,6% w 2013 oraz wystawy naukowe 5% w 2003. Stwierdzono również obecność prac o tematyce związanej z chorobami rzadkimi. Analizowane prace dotyczyły różnych metod diagnostycznych. Wnioski: Tematyka chorób rzadkich była obecna w wystąpieniach na Europejskich Kongresach Radiologii lecz stanowiły one niewielki odsetek wszystkich prac.
    Źródło:
    Problemy Nauk Stosowanych; 2016, 4; 153-156
    2300-6110
    Pojawia się w:
    Problemy Nauk Stosowanych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Abscesses localised in liver and spleen and their probable association with the annual cycle
    Ropnie umiejscowione w wątrobie i śledzionie i ich prawdopodobny związek z cyklem rocznym
    Autorzy:
    Uruska, A.
    Wojtowicz, I.
    Żywicka, K.
    Skoczylas, M. M.
    Sawicki, M.
    Walecka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/135886.pdf
    Data publikacji:
    2016
    Wydawca:
    Wyższa Szkoła Techniczno-Ekonomiczna w Szczecinie
    Tematy:
    liver abscess
    spleen abscess
    radiology
    environmental medicine
    ecology
    ropień wątroby
    ropień śledziony
    radiologia
    medycyna środowiskowa
    ekologia
    Opis:
    Introduction and aim: Intra-abdominal abscesses can lead to serious complications (e.g. sepsis) and death. The aim of the pilot study is to study if the occurrence of hepatic and splenic abscesses depends on the seasons. Material and methods: The study was based on patients with abscesses of liver or spleen in imaging studies (ultrasound and CT scan) performed in the period 2007-2016 in the Department of Diagnostic Imaging and Interventional Radiology of Pomeranian Medical University in Szczecin, taking dates of the examinations into consideration. Results: Out of the total number of studies abscesses in the abdomen (257), 52 studies were liver and spleen abscesses occurring in 42 patients. From the statistical analysis we obtained 17 studies carried out in winter, 8 - spring , 8 - summer and 9 - autumn. Chi-square test of goodness of fit showed a statistically significant increased value of abscesses in the number of tests diagnosed in winter in comparison to the other seasons (chi-square 5.212; p-value <0.1). Conclusion: The occurrence of hepatic and splenic abscesses is the highest in winter.
    Wstęp i cele: Ropnie wewnątrzbrzuszne mogą prowadzić do poważnych powikłań (m.in. sepsy) i do śmierci. Celem badania jest określenie czy częstość występowania ropni wątroby oraz ropni śledziony zależy od pór roku. Materiał i metody: Przedmiotem badań są pacjenci z ropniami wątroby lub śledziony w badaniach obrazowych (USG oraz TK) wykonanych w latach 2007-2016 w Zakładzie Diagnostyki Obrazowej i Radiologii Interwencyjnej Pomorskiego Uniwersytetu Medycznego w Szczecinie. Pod uwagę wzięto daty wykonania badania. Wyniki: Z całkowitej liczby badań ropni wewnątrzbrzusznych (257) 52 badania stanowiły ropnie wątroby oraz śledziony występujące ogółem u 42 pacjentów. Z analizy statystycznej uzyskano 17 badań wykonanych zimą, 8 wiosną, 8 latem oraz 9 jesienią. Test zgodności chi-kwadrat wykazał statystycznie istotny wzrost liczby badań z ropniami wykonanych zimą w odniesieniu do innych pór roku (chi-kwadrat 5,212 ; p-value <0,1). Wnioski: Częstość występowania ropni wątroby oraz ropni śledziony jest najwyższa zimą.
    Źródło:
    Problemy Nauk Stosowanych; 2016, 5; 187-190
    2300-6110
    Pojawia się w:
    Problemy Nauk Stosowanych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anatomical disorders of genitourinary system in children with sirenomelia in diagnostic imaging
    Zaburzenia anatomiczne układu moczowo-płciowego u dzieci z syrenomelią w diagnostyce obrazowej
    Autorzy:
    Machałowski, T.
    Daba’n, A.
    Ticic, N.
    Skoczylas, M. M.
    Sawicki, M.
    Walecka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/136108.pdf
    Data publikacji:
    2016
    Wydawca:
    Wyższa Szkoła Techniczno-Ekonomiczna w Szczecinie
    Tematy:
    sirenomelia
    urogenital system
    rare disease
    radiology
    syrenomelia
    układ moczowo-płciowy
    choroby rzadkie
    radiologia
    Opis:
    Introduction and aim: Sirenomelia sequence is a rare congenital malformation characterized with a single midline lower limb. Material and methods: Information comes from available literature sources that were reviewed. The method of diagnostic imaging and theoretical analysis has been used. Results: The group of the most common urogenital disorders occurring with sirenomelia includes renal dysplasia or agenesis and rudimentary genitalia. Sirenomelia is accompanied by a distinctive vascular anomalies, especially a single large umbilical artery, which arises above the aortic bifurcation and absence of inferior mesenteric artery which causes that the colon usually ends blindly, and moreover cardiac defects. Conclusion: Internal organs with disorders occurring with sirenomelia should be examined in physical examination and using imaging methods, including ultrasounography and magnetic resonance of the fetus and the neonate.
    Wstęp i cele: Sirenomelia to rzadka sekwencja wad wrodzonych charakteryzująca się pojedynczą kończyną dolną zlokalizowaną w linii pośrodkowej ciała. Materiał i metody: Informacje uzyskano w wyniku przeglądu dostępnych źródeł literaturowych. Zastosowano metodę diagnostyki obrazowej i analizy teoretycznej. Wyniki: Do grupy najczęstszych zaburzeń układu moczowo-płciowego występujących z sirenomelią należą dysplazja lub agenezja nerek i szczątkowe genitalia. Sirenomeli towarzyszą anomalie naczyniowe, zwłaszcza pojedyncza duża tętnica pępowinowa, która bierze początek powyżej rozwidlenia aorty i brak tętnicy krezkowej dolnej, co powoduje, że jelito grube zazwyczaj kończy się ślepo, a ponadto wady serca. Wnioski: Narządy wewnętrzne dotykane zaburzeniami występującymi z sirenomelią powinny zostać zbadane w badaniu fizykalnym i przy użyciu metod obrazowania, w tym ultrasonografii i rezonansu magnetycznego płodu i noworodka.
    Źródło:
    Problemy Nauk Stosowanych; 2016, 5; 151-156
    2300-6110
    Pojawia się w:
    Problemy Nauk Stosowanych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of intra-organizational trust on organizational outcomes
    Autorzy:
    Bieńkowska, A.
    Walecka-Jankowska, K.
    Zabłocka-Kluczka, A.
    Zimmer, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/406621.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    trust
    organization
    organizational outcomes
    zaufanie
    organizacja
    wyniki organizacyjne
    Opis:
    Nowadays, trust is perceived as one of the key factors that can build an organization’s competitive advantage, increase the efficiency of its functioning and ability to develop. It can be expected that shaping trust in an organisation will lead to improvements in various aspects of its functioning, especially effectiveness. This issue has not yet been the object of comprehensive scientific research. Hence, this study tackles the issue of the impact of trust on an organization’s outcomes. At the same time, two basic categories of trust are distinguished: global (attitudinal/affective) trust (regarding the belief that people in general are trustworthy) and specific (situational/cognitive) trust (modified by an individual’s experience). In the latter category, we may distinguish between vertical trust (concerning superiorsubordinate relations) and lateral trust (concerning relations between co-workers). The relation between the level of trust and organizational outcomes is examined for each of these categories of trust. The research covers organisations functioning in Poland and is based on a questionnaire.
    Źródło:
    Operations Research and Decisions; 2018, 28, 4; 9-30
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationships with siblings as a way of coping with stress in the early adult hood and the level of self-esteem
    Autorzy:
    Walęcka-Matyja, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/1177845.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Kazimierza Wielkiego w Bydgoszczy
    Opis:
    The aim of this study was to determine the psychological image of sibling relationships in adulthood, as well as to answer the question of whether and how sibling relationships in early adulthood are associated with the strategies for coping with stress and the level of self-esteem. The study included 62 persons in early adulthood (average age 30.2 years). The following tools were used: the Adult Sibling Relationship Questionnaire (ASRQ) by Stocker, Lanthier and Furman (1995) in the adaptation of Walęcka-Matyja (2014), the Multidimensional Coping Inventory to Assess the Ways in Which People Respond to Stress (COPE) by Carver, Scheier and Weintraub in the adaptation of Juczyński and Ogińska-Bulik (2009) and the Self-Esteem Scale (SES) by Rosenberg (1965) in the adaptation of Łaguna, Lachowicz-Tabaczek, Dzwonkowska (2007). The results of the study demonstrated the existence of correlations (especially numerous in the group of sisters), diverse in the direction and strength, between the adult sibling relationship dimensions and the strategies of coping with stress. The hypothesis that there is a positive correlation between the level of self-esteem and similarity and closeness in the group of sisters was proved to be true. A negative correlation between the level of self-esteem and a relationship characterized by domination was noted in the group of brothers.
    Źródło:
    Polskie Forum Psychologiczne; 2015, XX, 3; 285-304
    1642-1043
    Pojawia się w:
    Polskie Forum Psychologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Invasiveness of Listeria monocytogenes strains isolated from animals in Poland
    Autorzy:
    Walecka-Zacharska, E.
    Kosek-Paszkowska, K.
    Bania, J.
    Staroniewicz, Z.
    Bednarski, M.
    Wieliczko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/30672.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Animals are important reservoir of Listeria monocytogenes, a pathogen causing serious infections in both humans and livestock. However, data on invasiveness of L. monocytogenes strains of animal origin is very scarce. Ability of 18 L. monocytogenes strains of animal origin to invade HT- 9 cells was investigated. Plaque forming assay was used to assess invasiveness and ability of the pathogen to spread in the cell line. Almost 40% of L. monocytogenes strains were weakly invasive. It was shown that strains from serogroup 4b exhibited the highest invasiveness, whereas serogroup 1/2b consisted of strains of invasiveness below 0.0001%. Analysis of translated inlA and inlB gene sequences revealed no premature stop codons. Lineage-specific mutations in low invasive strains were identified within inlA and inlB sequences. Our results demonstrate high incidence of low invasive animal L. Monocytogenes strains, which may be at least partly explained by unique point mutations in the InlA and InlB.
    Źródło:
    Polish Journal of Veterinary Sciences; 2015, 18, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potential occupational and environmental factors in SSc onset
    Autorzy:
    Walecka, I.
    Roszkiewicz, M.
    Malewska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081975.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    systemic sclerosis
    connective tissue disease
    environmental factors
    occupational exposure
    silica
    Opis:
    Introduction and objective. Systemic sclerosis [SSc; scleroderma] is a rare, connective tissue disorder affecting all organs and systems. The primary feature of this disease is a chronic, progressive fibrosis due to excessive production of collagen and other components. There are two subsets of systemic sclerosis: 1) diffused SSc (dSSc), 2) limited SSc (lSSc) and 3) scleroderma without sclerosis (SSSC). The presented review is an attempt to summarize recent data regarding environmental and occupational factors in SSc onset. State of knowledge. There are many factors to be taken under consideration with SSc onset, although a strong correlation has been established for only a few. The most distinct factors are: crystalline silica and organic solvents (such as white spirit, aromatic, aliphatic-chain, chlorinated solvents, ketones, welding fumes). For other factors, which include abstestos, air pollution, other chemicals, silicone breast implants, tobacco smoking, drug reactions, diet influence and exposure to heavy metals, the jury is still out, and their position in SSc onset needs further studies. Conclusions. Although the pathogenesis of scleroderma remains unclear, there is a marked correlation between the onset of SSc and certain environmental or occupational factors.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 596-601
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental risk factors and epigenetic alternations in psoriasis
    Autorzy:
    Roszkiewicz, M.
    Dopytalska, K.
    Szymańska, E.
    Jakimiuk, A.
    Walecka, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085926.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    psoriasis
    habits
    environmental factors
    epigenetic alternations
    Opis:
    Introduction and objective. Psoriasis isa quite common, chronic and immune-mediated skin disorder. The prevalence of psoriasis differs in various countries, but it is said to affect 2% of the world’s population in general. Psoriasis has many different clinical features but all lesions have the same characteristic: erythema, thickening and scale, although other clinical features are also connected, such as psoriatic arthritis, obesity and metabolic syndrome. All of these may lead to conditions impairing the quality of life. This review is an attempt to summarize recent data regarding environmental factors, together with epigenetic markers and processes playing an important role in psoriasis. State of knowledge. Many different environmental factors play a role in genetically predisposed patients. This is causes epigenetic alternations which may be a linking part in the whole process. Many studies have indicated a connection between psoriasis and various genes and antigens. The presence of HLA-Cw6 is common as well a strong link between its presence and the onset of psoriasis being observed. The main alternations are DNA methylation, histone’s modifications and the role of microRNA. Excessive reaction is usually not present without a triggering factor. Environmental factors are mostly rated, such as drugs, life style and habits (smoking, alcohol), diet, physical trauma (skin injury provoking Koebner phenomenon), stress, microorganism and infections. Conclusions. The correlation between pathogenesis of psoriasis and environmental risk factors, together with epigenetic alternations still require more investigation. Education about diet habits, nutrition, weight loss and healthy lifestyle seems to be important during the treatment of psoriasis.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 335-342
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Towards organisational simplexity — a simple structure in a complex environment
    Autorzy:
    Tworek, Katarzyna
    Walecka-Jankowska, Katarzyna
    Zgrzywa-Ziemak, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1396506.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    complexity
    organisational structure
    organisational performance
    simplexity
    simplicity
    workforce
    contingency approach
    złożoność
    struktura organizacyjna
    wydajność organizacyjna
    prostota
    siła robocza
    podejście awaryjne
    Opis:
    The article contributes to the discussion on the validity and ways of simplifying modern organisations. There is an increasing focus on simplifying organisations, especially their organisational structures. However, the environment of contemporary organisations is increasingly complex, dynamic and uncertain. Therefore, the postulate of simplicity seems to question Ashby’s law stating that one kind of variety must be balanced by a different kind of variety. To cope with the indicated discrepancy, it is assumed that the simplification of some elements of an organisation is only possible due to the excessive complexity of others. The paper aims to verify the concept of organisational simplexity developed by e Cunha and Rego, which postulates the fit between simple structural solutions, complex workforce and complex environment. However, organisational performance is a factor verifying the legitimacy of the fit. The literature study explored the contradiction inherent in the postulate on the simplification of modern organisations. The contingency theory provided a major framework for the study. The research hypothesis was developed and empirically verified. The empirical study targeted 1142 organisations operating in Poland and Switzerland, different by their industry, size and the form of ownership. To verify the hypothesis, a statistical analysis was carried out, and the multiple correspondence analysis (MCA) method was used. The main result of the critical literature analysis is the finding that theoretical indications for simplifying modern organisations are fragmented, mainly focused on simplifying selected elements of an organisation, not considering the contradiction inherent in the postulate of simplicity related to environmental features and not verified empirically. The notion of the simplexity has been adopted, and it treats the simplicity and complexity as interrelated issues conditioned by situational factors. According to the empirical research results, the fit has been revealed between the degree of structure simplicity, the workforce complexity and the environment features.
    Źródło:
    Engineering Management in Production and Services; 2019, 11, 4; 43-53
    2543-6597
    2543-912X
    Pojawia się w:
    Engineering Management in Production and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on changing patterns of reproductive behaviours due to maternal features and place of residence in Poland during 1995–2014
    Autorzy:
    Genowska, A.
    Szafraniec, K.
    Polak, M.
    Szpak, A.
    Walecka, I.
    Owoc, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081598.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    fertility
    inequality in procreation
    maternal age
    socio-economic status
    marital status
    rural-urban
    Polska
    Opis:
    Introduction. The sharp decline in the total fertility rate in Poland coincided with broader socio-economic changes, which resulted in its reduction to the lowest level observed among the countries of Central and Eastern Europe. Objective. The aim of the study was to investigate and evaluate the changing patterns of reproductive behaviour in rural and urban areas, depending on the demographic and socio-economic features in Poland. Materials and method. Information about live births in Poland in the years 1995–2014 were obtained from the Central Statistical Office. Registered cases of live births in rural and urban areas were analyzed considering the maternal features (age, marital status, main source of income). To evaluate the changes in fertility and comparisons between rural and urban areas, Joinpoint Regresssion was used. Results. In 1995–2014, a shift in the age of highest fertility from 20–24 years to 25–29 years was observed. This occurred at the same time as a reduction in the fertility rate per 1,000 women aged 15–29 years, more pronounced in rural areas (95.8 to 60.0) than in urban areas (63.4 to 51.5), while in women aged 30–49 years, a faster increase in fertility was observed in urban areas (16.4 to 32.0) than in rural areas (27.5–29.2). Fertility trends between rural and urban areas differed significantly. A significant increase in live births for employed mothers was shown mainly in 2005–2009; later, the growth rate in rural areas was slower and in urban areas the growth trend stopped. Conclusion. The postponement of births and reduction of fertility in women aged 15–29 requires active measures aimed at creating favourable conditions for achieving economic independence for the younger generation, as well as combining work with raising children, especially in rural areas.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2018, 25, 1; 137-144
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exploring dog antler chews as a novel source of collagen supplementation: extraction and characterization of collagen from red deer antlers
    Autorzy:
    Pepłowska, Kamila
    Wałecka, Joanna
    Bąkowski, Paweł
    Dzięgielewski, Zbyszko
    Dzięgielewski, Damian
    Grzywacz, Kamilla
    Powiązania:
    https://bibliotekanauki.pl/articles/16706190.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    collagen
    antler-derived collagen
    acid-soluble collagen
    collagen extraction method
    collagen isolation optimization
    Opis:
    Collagen is the body’s most abundant protein and is primarily found in the skin, bones, tendons, and ligaments of animals and fish. As the interest in collagen supplementation grows, new sources of this protein are continually being introduced. We have confirmed that red deer antlers are a source of type I collagen. We investigated the effects of chemical treatment, temperature, and time on the extractability of collagen from red deer antlers. The optimal conditions for obtaining the highest collagen yield were determined to be: 1) removing noncollagenous proteins at 25°C for 12 h in an alkaline solution, 2) defatting at 25°C using a 1 : 10 grounded antler : butyl alcohol ratio, and 3) acidic extraction lasting 36 h using a 1 : 10 antler:acetic acid ratio. Under these conditions, we obtained a collagen yield of 22.04%. The molecular characterization of red deer antler collagen revealed typical features of type I collagens, including the presence of three "-chains, high glycine content, and high levels of proline and hydroxyproline, as well as helical arrangements. This report suggests that red deer antlers have significant potential as a source of collagen supplements.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 2; 199-208
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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