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    Wyświetlanie 1-21 z 21
    Tytuł:
    Effects of gelatine-coated vascular grafts on human neutrophils
    Autorzy:
    Mayer, Frank
    Buerger, Thomas
    Halloul, Zuhir
    Lippert, Hans
    König, Brigitte
    Tautenhahn, Joert
    Powiązania:
    https://bibliotekanauki.pl/articles/1394409.pdf
    Data publikacji:
    2015
    Wydawca:
    Index Copernicus International
    Tematy:
    biocompatibility
    gelatine
    vascular grafts
    human neutrophils
    Opis:
    The aim of the study was to investigate the immune-modulatory potential of commercially available PTFE and polyester vascular grafts with and without gelatine-coating. The biomaterial-cell-interaction was characterized by changes of established parameters such as PMN-related receptors/mediators, phagocytosis potential and capacity as well as the effect of an additional plasma-dependent modulation. Material and methods. By means of a standardized experimental in vitro model, various vascular graft material (PTFE/polyester/uncoated/gelatine-coated) was used for incubation with or without plasma and co-culturing with human neutrophile granulocytes (PMN) followed by analysis of representative receptors and mediators (CD62L, CD11b, CXCR2, fMLP-R, IL-8, Elastase, LTB4 ). Oxidative burst assessed phagocytosis capacity. Results. Comparing the vascular grafts, un-coated PTFE induced the lowest magnitude of cell stimulation whereas in case of gelatine-coating, cell response exceeded those of the other vascular grafts. This was also found comparing the polyester-based prosthetic material. Gelatine-coated polyester led to a more pronounced release of elastase than gelatine- coated PTFE and the uncoated materials. The results of oxidative burst indicated a reduced phagocytosis capacity in case of gelatine-coated polyester. Plasma incubation did also provide an impact on the cellular response. While in case of gelatinecoating, PMN-related receptor stimulation became lower, it increased by native polyester. The latter one did also induce more mediators such as IL-8 and LTB4 than gelatine-coated material. Conclusions. There have been no extensive data on cell-cell interactions, cytokines and general histo-/hemocompatibility of human cells by the new generation of vascular grafts. It remains still open whether healing process and infectious resistance can be compromised by material-dependent overstimulation or reduced phagocytosis potential of the immune cells of the primary unspecific immune response induced by gelatine-coated materials.
    Źródło:
    Polish Journal of Surgery; 2015, 87, 9; 443-452
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indications and Long-term Outcomes of Open Augmentation Rhinoplasty with Autogenous L-shaped Costal Cartilage Strut Grafts – A Single Plastic Surgeon’s Experience
    Autorzy:
    Leach, Laura
    Shamil, Eamon
    Malata, Charles M
    Powiązania:
    https://bibliotekanauki.pl/articles/1398127.pdf
    Data publikacji:
    2018
    Wydawca:
    Index Copernicus International
    Tematy:
    augmentation rhinoplasty
    costal cartilage grafts
    autoimmune inflammatory disease
    granulomatosis with polyangiitis
    relapsing polychondritis
    screw fixation of grafts
    Opis:
    Introduction: We present a single surgeon’s experience of open augmentation rhinoplasty with autogenous
L-shaped costal cartilage grafts, with long-term patient-reported outcome data. We highlight the salient operative steps and outline the peri-operative care required to optimise outcomes. Materials and Methods: A retrospective review of eleven such augmentation rhinoplasties performed between 2008 and 2016 was undertaken. Indications included saddle nose deformity [granulomatosis with polyangiitis (n=7) and relapsing polychondritis (n=1)], post-traumatic nasal collapse (n=1) and advanced cosmetic westernisation of the nose (n=2). Long-term patient-reported outcome was assessed with a patient questionnaire. Results: All patients achieved marked improvement in nasal position, shape and function. There was no cartilage exposure, warping or resorption and no recurrent deformities. One patient’s dorsal graft was fractured two years later during an ophthalmological procedure and the deformity was re-corrected successfully, again with the above technique. Average follow up was 5.2 years. Of the nine patients who responded to the follow-up questionnaire, 100% were satisfied with their nasal appearance. 100% of responders at follow-up reported that they have had no problems relating to their nose (n=9). Discussion: L-shaped costal cartilage grafts provided a reliable, reproducible approach in augmentation rhinoplasty for disparate indications (inflammatory, traumatic and cosmetic) in the hands of a low-volume operator. With careful patient selection and planning, this technique can provide pleasing aesthetic outcomes and high patient satisfaction, with good long-term outcomes.
    Źródło:
    Polish Journal of Otolaryngology; 2018, 72, 3; 26-32
    0030-6657
    2300-8423
    Pojawia się w:
    Polish Journal of Otolaryngology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Autogenous transplants of adrenal fragments in an animal model
    Autorzy:
    Dworzyńska, Agnieszka
    Paduszyńska, Katarzyna
    Pomorski, Lech
    Powiązania:
    https://bibliotekanauki.pl/articles/1392426.pdf
    Data publikacji:
    2018
    Wydawca:
    Index Copernicus International
    Tematy:
    grafts
    transplantation
    adrenal insufficiency
    adrenal gland
    Opis:
    Introduction: Adrenal insufficiency is a typical complication after surgical treatment of adrenal tumors, especially after the removal of both adrenal glands. Human beings are not able to survive without adrenal glands and without proper hormonal substitution. Autotransplantation of a fragment of the adrenal gland may prevent this complication. This can be done by transplanting the entire adrenal glands or its fragment, such as the adrenal cortex cells. In the case of adrenal tumors, the entire adrenal gland can not be transplanted. However, it is possible to transplant cells from the tumor-free part. Successful adrenal autografts may result in a new treatment of adrenal insufficiency. Materials and Methods: Autograft transplantation was performed on 3 groups of Sprague Dawley rats. In the first group, physiological corticosterone concentrations were determined. These animals were not operated. In the second group, both adrenal glands were removed. Corticosterone concentrations were determined after bilateral adrenalectomy. The third group was divided into two parts. In the first subgroup, bilateral adrenalectomy was performed simultaneously with adrenal transplant into the omentum. In the second subgroup, right adrenalectomy was performed simultaneously with and adrenal transplant into the omentum followed a month later by left adrenalectomy. During the experiment, corticosterone concentrations were measured at 4 time points. Results: The statistical difference between corticosterone concentrations in rats after two timed adrenalectomies and rats after bilateral adrenalectomy was statistically different, but these results were far from physiological concentrations.
    Źródło:
    Polish Journal of Surgery; 2018, 90, 4; 22-28
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Szczepy rosnące w drzewostanie sosny zwyczajnej (Pinus sylvestris L.)
    Grafts growing in the Scotch pine (Pinus sylvestris L.) stand
    Autorzy:
    Wesoly, W.
    Pazdrowski, W.
    Buczma, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/791510.pdf
    Data publikacji:
    2013
    Wydawca:
    Wyższa Szkoła Zarządzania Środowiskiem w Tucholi
    Źródło:
    Zarządzanie Ochroną Przyrody w Lasach; 2013, 07
    2081-1438
    2391-4106
    Pojawia się w:
    Zarządzanie Ochroną Przyrody w Lasach
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przeciwbakteryjne właściwości protez naczyniowych modyfikowanych cefepimem
    Antibacterial properties of vascular grafts modified with cefepime
    Autorzy:
    Miazga-Karska, M.
    Ginalska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/284918.pdf
    Data publikacji:
    2007
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    protezy naczyniowe
    cefepim
    vascular prosthesis
    cefepime
    Źródło:
    Engineering of Biomaterials; 2007, 10, no. 67-68; 19-20
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flowering and cone bearing of Picea abies grafts in second-generation seed orchards
    Autorzy:
    Misiorny, A
    Chalupka, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/41542.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Norway spruce
    Picea abies
    cone yield
    seed production
    flowering
    seed orchard
    Opis:
    In 2004, abundant flowering of Norway spruce (Picea abies (L.) Karst.) was observed in two second- generation seed orchards: (1) ‘Outbreeding’, promoting crossing between clones of five geographically distant populations; and (2) ‘Kolonowskie’, restoring a population whose offspring exists only in an international experiment (IUFRO 1964/1968). In bothseed orchards, female strobili were produced by 91.3% and 91.7% of clones, represented by 64.1% and 55.5% of grafts, respectively, and statistically significant differences between clones were found in the number of mature cones. In the case of the seed orchard ‘Outbreeding’, the number of mature cones in individual clones was significantly correlated with latitude of the origin of maternal populations (r = 0.8826, p = 0.0470). The majority (95%) of cones in seed orchards ‘Outbreeding’ and ‘Kolonowskie’ were produced by only 28.2% and 38.5% of all clones, and 21.4% and 25.7% of all grafts, respectively. These data attest to a disparity between the level of genetic diversity in seed orchard progeny resulting from the observed numbers of cone-bearing clones and grafts and the genetic diversity expected from the actual participation of clones and grafts in seed orchard composition. The estimated seed production per 1 ha of seed orchard area in 2004 reached 21.05 kg for ‘Outbreeding’ and 21.72 kg for ‘Kolonowskie’.
    Źródło:
    Dendrobiology; 2006, 56; 51-59
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ warunków oświetlenia wewnątrz pączków na zawartość endogennych substancji giberelinopodobnych u szczepów sosny zwyczajnej
    The influence of light conditions inside buds on the content of endogenous gibberellin-like substances in grafts of Scots pine
    Autorzy:
    Wesoly, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/818949.pdf
    Data publikacji:
    1987
    Wydawca:
    Polskie Towarzystwo Leśne
    Źródło:
    Sylwan; 1987, 131, 01
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimized protocol of anesthesia in large experimental model of transgenic pigs for treatment of cartilage injuries with new generation biomaterials and cell-based grafts in vivo
    Autorzy:
    Wieczorek, J.
    Jura, J.
    Mierzwiński, M.
    Ficek, K.
    Kuźma, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/285461.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    cartilage
    biomaterials
    treatment
    Źródło:
    Engineering of Biomaterials; 2018, 21, 148; 55
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mandibular reconstruction : biomechanical strength analysis (FEM) based on a retrospective clinical analysis of selected patients
    Autorzy:
    Jędrusik-Pawłowska, M.
    Kromka-Szydek, M.
    Katra, M.
    Niedzielska, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/306994.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    bone grafts
    mandibular reconstruction
    finite element method
    reconstruction plates
    bone healing
    kości
    metoda elementów skończonych
    przeszczep kostny
    Opis:
    Restoration of mandible discontinuity defects continues as a challenge for maxillofacial surgeons. Despite the development of algorithms for reconstruction plates fixation and autogenous grafting techniques, complications are still encountered including screw loosening, bone resorption or delayed/incomplete union. The aim of the study was to analyze the possibility of obtaining bone union in the aspect of biomechanical conditions of two mandible reconstructions using an autogenous iliac crest bone graft stabilized with a reconstruction plate, and to attempt to predict patient outcomes based on strength parameters obtained by the finite element analysis. The authors of the present paper were trying to determine to what extent the reconstruction model and changes occurring in hard tissues of the bone and autogenous graft (simulated by changes in material properties) might help predict individual patient courses. The effort of reconstruction plates was defined using the values of the von Mises stress (σHMH) while the effort of bones was determined based on the values of strain intensity εint. The results of the above mentioned simulations are presented in the form of bar graphs and strain/stress distribution maps. Our strength analyses indicate that uncomplicated healing of grafts fixed with reconstruction plates requires that the initial loading of the stomatognatic system should not result in strain intensity exceeding 20–40 [×10–4]. This range of strain intensity evokes an increase in the mineral phase. The state of nonunion between the mandibular bone and the graft might result from prolonged periods of insufficient loading of the mandible during treatment.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2013, 15, 2; 23-31
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena stabilności zamocowania sztucznej panewki stawu biodrowego
    Fixing stability assessment of artificial acetabulum of a hip joint
    Autorzy:
    Płomiński, J.
    Watral, Z.
    Michalski, A.
    Sienkiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/327444.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    protezoplastyka rewizyjna
    staw biodrowy
    przeszczep kostny
    panewka stawu biodrowego
    revision hip arthroplasty
    bone grafts
    acetabulum of a hip joint
    Opis:
    W referacie przedstawiono problematykę stabilności zamocowania panewki sztucznego stawu biodrowego po zabiegu rewizyjnym. Wykonano badania eksperymentalne na modelach cielęcego stawu biodrowego z zacementowaną na warstwie ubitych przeszczepów kostnych panewką polietylenową. Po zacementowaniu panewki obciążano ją siłą 1kN przez 100000 cykli a następnie sprawdzano jej stabilność przykładając na jej krawędź siłę ścinającą. Badano wpływ grubości warstwy przeszczepów oraz kierunku działania siły obciążającej na stabilność panewki.
    The paper deals with the problem of stability of artificial acetabulum after revision hip arthroplasty. Experimental tests on calf joint with artificial acetabulum cemented into it were performed. Cemented acetabulum was subjected to a cyclic load of 1 kN through 100000 cycles and then the fixing stability was verified by applying a shearing force to its edge. The influence of thickness of bone grafts layer and the direction of loading force on the overall stability was investigated.
    Źródło:
    Diagnostyka; 2006, 3(39); 245-252
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical guidelines on the properties of human healthy arteries in the design and fabrication of vascular grafts: experimental tests and quasi-linear viscoelastic model
    Autorzy:
    Faturechi, Rahim
    Hashemi, Ata
    Abolfathi, Nabiollah
    Solouk, Atefeh
    Powiązania:
    https://bibliotekanauki.pl/articles/307007.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    elastyczność
    model konstytutywny
    tętnica
    elasticity
    constitutive model
    human artery
    artificial artery
    quasi-linear viscoelasticity
    Opis:
    Knowledge of mechanical behavior of healthy human arteries as the guidelines to target properties of vascular grafts deserves special attention. There is a lack of mathematical model to characterize mechanical behavior of biomaterial while many mathematical models to reflect mechanics of human arteries have been proposed. The objective of this paper was set to measure mechanical properties of healthy human arteries including Common Carotid Artery (CCA), Abdominal Aorta Artery (AAA), Subclavian Artery (SA), Common Iliac Artery (CIA) and Right and Left Iliac Artery (RIA and LIA) and compare them to those of commercial ePTFE and Dacron®. Methods: Series of stress relaxation and strain to failure tests vere performed on all samples. The experimental data was utilized to develop quasi-linear viscoelastic (QLV) model of both natural and artificial arteries. Results: ePTFE is the stiffest sample, while the CCA is the most compliant one among all. RIA and CIA are more viscous than the other natural arteries, while AA and CCA are less viscous. The proposed model demonstrated an accurate fit to the experimental results, a proof of its ability to model both nonlinear elasticity and viscoelasticity of the human arteries and commercial ones. Conclusions: ePTFE and Dacron® are much stiffer than human arteries that may lead to the disruption of blood hemodynamic and may not be biomechanically feasible as a replacement.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2019, 21, 3; 13-21
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Die-back of grafts in the clonal seed orchards of Douglas-fir (Pseudotsuga menziensii (Mirb.) Franco) in Poland and attempts at producing seedlings of this species by autovegetative propagation
    Autorzy:
    Kuss, M
    Powiązania:
    https://bibliotekanauki.pl/articles/41152.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    rooting
    autovegetative propagation
    Polska
    grafting
    clonal seed orchard
    seedling
    Pseudotsuga menziesii
    Douglas fir
    vegetative propagation
    Opis:
    So far, experience in the existing clonal seed orchards of Douglas-fir indicates that grafts of this species are short-lived. According to research carried out in North America, incompatibility between the grafted scions and the rootstocks happens during the whole period of growth and development in clonal seed orchards of Douglas-fir. A similar phenomenon occurs in the clonal seed orchards of Douglas-fir in Poland. The extent of die-back of grafts was examined in three existing oldest units in the Forest District of Gniewkowo (founded in 1992-1993; 2.80 ha), the Forest District of Leżajsk (founded in 1995, 4.22 ha) and the Forest District of Łopuchówko (founded in 1993, 7.43 ha). In all these areas, losses due to die-back ranged from a dozen to a few dozen per cent. Die-backs in the clonal seed orchards in the Forest District of Gniewkowo and in the Forest District of Łopuchówko are now reduced to as much as about fourty per cent of grafts. Analyses of die-back in all these areas reveal great variation between individual clones, indicating its genetic basis. Research carried out so far has not demonstrated the presence of any pathogens responsible for causing the die-back in the grafts. Some hope to solve the problem mentioned above arises from attempts at autovegetative propagation of Douglas-fir.
    Źródło:
    Dendrobiology; 2002, 47 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the impact of decellularization and sterilization on tensile strength transgenic porcinedermal dressings
    Autorzy:
    Joszko, Kamil
    Gzik-Zroska, Βożena
    Kowalewska, Edyta
    Klama-Baryła, Agnieszka
    Suchoń, Sławomir
    Burkacki, Michał
    Wolański, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/307164.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    tkanka skórna
    oparzenie
    analiza statystyczna
    rekonstrukcja
    skin tissue
    burn wounds treatment
    xenogeneic grafts
    static tensile test
    statistical analysis
    reconstructive surgery
    Opis:
    The aim of this paper was to evaluate which method of acellularization and sterilization is optimal, in the meaning of which processes have the least impact on the deterioration of mechanical properties of porcine tissues used for xenogeneic applications. Methods: The static tensile probe was conducted for 80 skin specimens obtained from transgenic swine, which are used as a wound dressing for skin recipient. Obtained data were subsequently analyzed with the use of statistical methods. Results: It was found that Young’s modulus for the samples after the sterilization process for the dispase substance and the mixed method (SDS + trypsin) were statistically significantly changed. In the case of dispase, Young’s modulus value before the sterilization process was 12.4 MPa and after the value increased to 28.0 MPa. For the mixed method (SDS + trypsin) before the sterilization process Young’s modulus value was 5.6 MPa and after it was increased to 6.3 MPa. The mixed method (SDS + trypsin) had the slightest effect on changing the mechanical properties of the samples before and after the sterilization process. Conclusions: It was confirmed that different methods of acellularization and the process of sterilization have an influence on the change of mechanical properties of the skin of transgenic swine. In the authors’ opinion, the mixed method (SDS + trypsin) should be recommended as the best one for the preparation of transgenic porcine dermal dressings because it ensures a smaller probability of dressing’s damage during a surgical procedure.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2019, 21, 3; 87-97
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Patient-specific graft design method for cranofacial surgical planning
    Autorzy:
    Król, Z.
    Chlebiej, M.
    Zerfass, P.
    Zeilhofer, H.-F.
    Sader, R.
    Mikołajczak, P.
    Keeve, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/332956.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
    Tematy:
    komputerowe wspomaganie operacji
    planowe przecinanie kości
    przeszczep autologiczny
    projekt transplantacji
    dopasowania środka podobieństwa
    witryna dawcy
    optymalizacja
    computer-aided surgery
    osteotomy planning
    autologous grafts
    transplant design
    matching similarity measure
    donor site
    optimization
    Opis:
    This paper presents a method for computer assisted selection of optimal donor sites for autologous osseous grafts in the craniofacial surgery. At the initial graft design stage the surgeon defines in the CT data set the shape of the bone segment to be reconstructed and in the donor region CT data set a set of constraints for the optimization task. This non-automatic step is followed by a fully automatic optimization stage, which delivers a set of sub-optimal and optimal donor sites for a given template. Such approach permits the surgeon to find the best site for harvesting the graft and enables an exact anatomical reconstruction of the osseous section.
    Źródło:
    Journal of Medical Informatics & Technologies; 2002, 3; MI189-197
    1642-6037
    Pojawia się w:
    Journal of Medical Informatics & Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wzrost szczepów wiązu górskiego (Ulmus glabra Huds.) w archiwum klonów w Nadleśnictwie Bielsk
    Growth of Ulmus glabra Huds. grafts in the clone archive in Bielsk Forest District
    Autorzy:
    Mioduszewski, S.
    Korczyk, A.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1339852.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    ochrona zasobow genowych
    wiaz gorski
    Ulmus glabra
    rozmnazanie roslin
    rozmnazanie wegetatywne
    klony
    wzrost roslin
    jakosc hodowlana
    Nadlesnictwo Bielsk
    vegetative progeny
    clone archive
    Ulmus glabra Huds.
    Wych elm
    Opis:
    Vegetative progeny were obtained from 46 elms (Ulmus glabra Huds.) by grafting. These grafted trees were planted in 2009 in a clone archive in forest plot 264j in the Bielsk Forest District. After one year of growth, elm clone survival ranged from 38% to 100% (89% on average). Although all clones were of similar age and were grown under similar conditions, their average height was highly variable and ranged from 99.0 cm (clone no. 9473z) to 186.6 cm (clone no. 9645z), while average root collar diameter ranged from 8.4mm (clone no. 9473z) to 18.0 mm (clone no. 9645z). There were large differences crown architectural among the different clones, and variation in average shape of the crown was high (from 2.6 in clone no. 9655 to 3.8 in clone no. 9446z). Index breeding values determined on the standardized data for height, root collar diameter, crown shape and survival, ranged from -0.71 (clone no. 9473z) to 0.61 (clone no. 9645z). Clones from Czerwony Dwór reached a better breeding value (0.17) than clones from Gołdap (-0.0266), and variation in their average breeding values was high (0.197).
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 2; 149-159
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of rootstock and grafting method on the grafts success and growth of Cedrus deodara (Roxb. ex Lamb.) ‘Karl Fuchs’ plants
    Autorzy:
    Świerczyński, S.
    Kolasiński, M.
    Urbaniak, M.
    Stachowiak, A.
    Rybus-Zając, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/12309651.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    deodar cedar
    Cedrus deodara
    Karl Fuchs cultivar
    plant cultivar
    Larix decidua
    Pinus armandii
    rootstock
    rootstock influence
    grafting
    grafting method
    graft survival
    plant propagation
    sprout
    bud
    carotenoid content
    chlorophyll content
    chloroplast pigment content
    Opis:
    Experimental studies were conducted in 2015–2017 in the Department of Dendrology, Pomology and Nursery of Poznan University of Life Sciences. The aim of the research was to study the usefulness of three rootstocks: Larix decidua, Pinus armandii, Cedrus deodara and two grafting methods: side grafting and split grafting for propagation purposes of Cedrus deodara ‘Karl Fuchs’. In addition, it was evaluated how the rootstock and the age of cultivar shoots influenced the level of chloroplast pigments in the needles. A higher percentage of grafts success was obtained on Pinus armandii and Cedrus deodara using the side grafting method. Grafted scions of ‘Karl Fuchs’ produced the greatest number of lateral buds and the longest lateral increments of growth on Cedrus deodara root stock. Side grafting significantly improved the percentage of plants that restarted their growth in the second year of cultivation. The largest number of buds on two-year-old shoots were counted on plants grafted on Cedrus deodara using split grafting method. The rootstocks used in this experiment had a slight effect on the content of chloroplast pigments in the needles. Plants grafted on Pinus armandii had the highest level of chlorophyll B, and those grafted on Larix decidua – chlorophyll A/B ratio. The content of chloroplast pigments in the needles depended on the age of shoots. The highest level of chlorophyll A, chlorophyll B and carotenoids was observed when needles were collected from the last year’s growth.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 5; 63-72
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmienność cech morfologicznych, wiosennego pędzenia pąków i kwitnienia świerka pospolitego (Picea abies [L.] Karst.) na plantacji nasiennej w Nadleśnictwie Bielsk
    Variability of morphological features, bud burst and flowering of Norway spruce (Picea abies [L.] Karst.) in the seed orchard of the Bielsk Forest Distric
    Autorzy:
    Mioduszewski, S.
    Rzońca, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311789.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    plantacje nasienne
    swierk pospolity
    Picea abies
    klony
    wartosc genetyczna
    fenologia
    wzrost roslin
    rozwoj roslin
    cechy morfologiczne
    kwitnienie
    produkcja nasienna
    Norway spruce
    grafts
    seed production
    quantitative traits
    phenology
    fructification
    heritability
    Opis:
    The main aim of this paper was to characterize Norway spruce clones in terms of bud burst, flowering and morphological features. Observation and measurements were carried out in the Norway spruce seed orchard of the Bielsk Forest District in the north-eastern part of Poland. The seed orchard was established in 1989 and consists of 428 grafts of over 37 trees from the Białowieża Primeval Forest. An assessment of bud burst, stem forking, stem form, crown width, branch thickness, vitality, flowering and fructification as well as diameter measurements was done in 2013 and 2014. The results showed variability of morphological features among different clones as well as within individual clones. Differences among clones in spring bud development, stem form and branch thickness were statistically significant. Additionally, a positive correlation between male and female flowering was observed. The research also confirmed an influence of the healthiness of the grafts on seed production with trees in a weakened state producing more seeds.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 4; 388-400
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy na plantacjach nasiennych zawężamy zmienność genetyczną? Próba odpowiedzi na podstawie analiz mikrosatelitarnego DNA szczepów rosnących na plantacji nasiennej sosny zwyczajnej (Pinus sylvestris L.) z Nadleśnictwa Susz
    Are we narrowing genetic variability in seed orchards? An attempt to answer, based on the analysis of microsatellite DNA of grafts growing in Scots pine (Pinus sylvestris L.) seed orchard in the Forest District Susz
    Autorzy:
    Przybylski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311426.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    plantacje nasienne
    sosna zwyczajna
    Pinus sylvestris
    zmiennosc genetyczna
    DNA mikrosatelitarny
    analiza DNA
    microsatellite DNA
    tree breeding
    seed orchard
    Opis:
    Scots pine (Pinus sylvestris L.) is the most common species in Poland’s forest stands. The mode of pine stands renovation requires that silviculture practitioners have continuous access to seed banks. Orchard-grown seeds are predicted to constitute an increasingly larger part of the average demand for pine seeds in Poland. Seed orchards, due to a limited number of maternal trees as well as the irregularity of their blooming and pollination, enhance the risk of genetic diversity reduction in planted forest stands. This is of particular importance in the context of dynamic climate change. Markers based on microsatellite DNA fragments are effective tools for monitoring genetic variability. In the present study, three different microsatellite DNA fragments were used: SPAC 12.5, SPAG 7.14 and SPAC 11.4. The main objective of this research was to study genetic variability in one of the biggest seed orchards in Poland, located in the Forest District Susz. The obtained results indicated heterozygosity loss within the orchard, proving the existence of specimen selection effects on genetic variability. Hence, it seems quite important to take account of molecular genetic variability of maternal trees in future breeding strategies.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 3; 240-249
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of changes in the length and cross-sectional dimension of autogenous grafts from semitendinosus and gracilis tendons used for anterior cruciate ligament (ACL) reconstruction in patients with active growth plates: MRI analysis
    Ocena zmian długości i wymiaru poprzecznego autogennego przeszczepu ze ścięgien mięśnia półścięgnistego i smukłego użytego do rekonstrukcji więzadła krzyżowego przedniego (ACL) u pacjentów z aktywnymi chrząstkami wzrostowymi: analiza MRI
    Autorzy:
    Ciszewski, Andrzej
    Zarębska-Mróz, Aneta
    Powiązania:
    https://bibliotekanauki.pl/articles/20311524.pdf
    Data publikacji:
    2023-11-20
    Wydawca:
    Wydawnictwo Exemplum
    Tematy:
    ACL reconstruction
    paediatric population
    MRI tendon graft evaluation
    rekonstrukcja ACL
    populacja dziecięca
    ocena przeszczepu ścięgnistego w MRI
    Opis:
    Introduction. In recent years, there has been an increase in anterior cruciate ligament (ACL) injuries during childhood and adolescence. Aim. The aim of this study is to observe the diameter and length of the graft change in the postoperative period. Materials and methods. The study group consisted of 21 adolescents (11 boys and 10 girls) who underwent ACL reconstruction using hamstring and gracilis tendon grafts. MRI evaluations were performed at 3-6 and 24-26 months postoperatively to assess the width and length of the graft. The graft cross-sectional dimension was measured at the mid-substance of the tendons on sagittal scans in T1 and T2-weighted sequences. Length measurement was performed on axial ACL scans at its central portion (assessing mid-substance length). The collected measurements from both postoperative periods were compared and statistically analysed. Results. MRI analysis conducted postoperatively showed a statistically significant decrease in graft cross-sectional dimension, from an average 7.21-5.82 mm. The intra-articular graft length measured in MRI at 3-6 months post-surgery averaged 21.52 mm, while the length measured at 24-26 months post-surgery averaged 22.42 mm. Conclusions. Postoperative MRI analysis of reconstructed ACLs in adolescents with active growth plates demonstrated a reduction in graft cross-sectional dimension and a slight increase in graft length.
    Wstęp. W ostatnich latach obserwuje się wzrost uszkodzeń więzadła krzyżowego przedniego w okresie dziecięcym i młodzieżowym. Cel. Celem pracy jest zaobserwowanie czy średnica i długość przeszczepu zmienia się w okresie pooperacyjnym. Materiał i metody. Grupę badaną stanowiło 21 nastolatków (11 chłopców i 10 dziewczynek), u których przeprowadzono rekonstrukcję ACL z przeszczepem ze ścięgien mięśnia półścięgnistego i smukłego. 3-6 oraz 24-26 miesięcy po zabiegu operacyjnym wykonano MRI w celu oceny średnicy i długości przeszczepu. Wymiar średnicy przeszczepu mierzono w środkowej, śródstawowej części ścięgien na skanach strzałkowych w sekwencjach T1 i T2 zależnych. Pomiar długości dokonano na skanach osiowych ACL w jego centralnej części (oceniono śródstawową długość). Zebrane wymiary z obu okresów pooperacyjnych porównano i zanalizowano statystycznie. Wyniki. Analiza badań MRI, wykonana po rekonstrukcji, 21 kolan wykazała statystycznie istotne zmniejszenie wymiaru średnicy z średnio 7,21-5,82 mm. Długość wewnątrzstawowa przeszczepu w badaniu rezonansu magnetycznego wykonanego 3-6 miesiąca od operacji wyniosła średnio 21,52 mm. Pomiar długości więzadła po 24-26 miesiącach od operacji wyniósł średnio 22,42 mm. Wnioski. Pooperacyjna analiza MRI zrekonstruowanych ACL u dzieci z aktywnymi chrząstkami wzrostowymi wykazała zmniejszenie średnicy oraz niewielkie wydłużenie przeszczepu.
    Źródło:
    Chirurgia Narządów Ruchu i Ortopedia Polska; 2023, 88, 4; 183-186
    0009-479X
    2956-4719
    Pojawia się w:
    Chirurgia Narządów Ruchu i Ortopedia Polska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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