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  1. Article ; Online: Mechanical properties and osteointegration of the mesh structure of a lumbar fusion cage made by 3D printing.

    Żak, Małgorzata / Rusak, Agnieszka / Kuropka, Piotr / Szymonowicz, Maria / Pezowicz, Celina

    Journal of the mechanical behavior of biomedical materials

    2023  Volume 141, Page(s) 105762

    Abstract: The currently popular 3D printing makes it possible to produce spatial scaffolds, the main purpose of which is to obtain implants that have favourable mechanical properties to promote cell adhesion. This study aims to prove the influence of changes in ... ...

    Abstract The currently popular 3D printing makes it possible to produce spatial scaffolds, the main purpose of which is to obtain implants that have favourable mechanical properties to promote cell adhesion. This study aims to prove the influence of changes in selected geometrical parameters of scaffolds, used in intervertebral cages, on the mechanical properties obtained and thus on the osteointegration of the studied constructs with osteoblasts and fibroblasts. The stiffness values and maximum failure force of four modifications to geometric dimensions of the meshes were determined from the intendation test. Adhesion assays were conducted (including gentle pendulum motion) for Balb/3T3 fibroblasts and NHOst osteoblasts. The study revealed that an important geometrical parameter affecting the strength of the mesh is the height (h) of the connection point between arms of successive mesh cells. There was no significant effect of the mesh geometry on the abundance and survival of Balb/3T3 and NHOst cells. At the same time, fibroblasts were more likely to form colonies in the area where there is fusion of mesh cells, as opposed to osteoblasts that were more numerous at vertices of the mesh.
    MeSH term(s) Surgical Mesh ; Prostheses and Implants ; Mechanical Phenomena ; Printing, Three-Dimensional ; Spinal Fusion
    Language English
    Publishing date 2023-03-07
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2378381-3
    ISSN 1878-0180 ; 1751-6161
    ISSN (online) 1878-0180
    ISSN 1751-6161
    DOI 10.1016/j.jmbbm.2023.105762
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Changes in the scar tissue structure after cesarean section as a result of manual therapy.

    Olszewska, Katarzyna / Ptak, Agnieszka / Rusak, Agnieszka / Dębiec-Bąk, Agnieszka / Stefańska, Małgorzata

    Advances in clinical and experimental medicine : official organ Wroclaw Medical University

    2023  Volume 33, Issue 4, Page(s) 387–395

    Abstract: Background: Available statistical data from 2015 show that 28% of pregnancies in developed countries end in cesarean section (CC). Discomfort associated with the scar after surgery is a common complication.: Objectives: This study aimed to evaluate ... ...

    Abstract Background: Available statistical data from 2015 show that 28% of pregnancies in developed countries end in cesarean section (CC). Discomfort associated with the scar after surgery is a common complication.
    Objectives: This study aimed to evaluate the changes in the structure of the cesarean scar after the application of a scheme of manual therapy.
    Material and methods: The study included 15 women in the treatment group (TG) and 15 in the control group (CG). The scars were evaluated twice at 5-week intervals with the use of quantitative scales: the Vancouver Scar Scale (VSS), the Manchester Scar Scale (MSS) and the Patient and Observer Scar Assessment Scale (POSAS). During each examination, the scar was compared, using the specified criteria, to the physiological skin, i.e., the tissues directly bordering the incision. During therapy, 8 manual techniques were used during a 4-week program consisting of 30-minute sessions 3 times per week.
    Results: Patients in the TG showed a statistically significant improvement in all of the analyzed characteristics of the scar. A statistically significant difference was also observed between the results obtained during the 2nd examination (after the therapy) in the TG and the CG.
    Conclusions: As a result of the therapy, the condition of the scar in the TG significantly improved. Onerous scar-related symptoms were alleviated. The vascularity, hyperpigmentation and distortion of the scar were reduced. The elasticity and pliability of the scar increased, and the height of the scar decreased. The texture, finish and contour of the scar improved. Obtained results suggest that manual therapy of the scar after CC should be a part of the treatment in women during the postpartum period.
    MeSH term(s) Humans ; Female ; Cesarean Section/adverse effects ; Cicatrix/etiology ; Cicatrix/pathology ; Adult ; Musculoskeletal Manipulations/methods ; Pregnancy ; Treatment Outcome
    Language English
    Publishing date 2023-12-14
    Publishing country Poland
    Document type Journal Article
    ZDB-ID 2270257-X
    ISSN 1899-5276 ; 1230-025X
    ISSN 1899-5276 ; 1230-025X
    DOI 10.17219/acem/169236
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  3. Article: Evaluation of the microbial, cytotoxic and physico-chemical properties of the stainless steel crowns used in pediatric dentistry.

    Sztyler, Klaudia / Pajączkowska, Magdalena / Nowicka, Joanna / Rusak, Agnieszka / Chodaczek, Grzegorz / Nikodem, Anna / Wiglusz, Rafał J / Watras, Adam / Dobrzyński, Maciej

    Acta of bioengineering and biomechanics

    2023  Volume 24, Issue 4, Page(s) 127–137

    Abstract: Preformed stainless steel crowns are used in pediatric dentistry to obtain full crown restoration of primary molar teeth. They are consider the best restoration in terms of durability and effectiveness. The purpose of this study is to evaluate microbial, ...

    Abstract Preformed stainless steel crowns are used in pediatric dentistry to obtain full crown restoration of primary molar teeth. They are consider the best restoration in terms of durability and effectiveness. The purpose of this study is to evaluate microbial, cytological and physio-chemical properties to determine whereas stainless steel crown are biocompatible, safe for surrounding tissue and helpful in avoiding micro-organisms influence on the tooth tissue. Based on the results, it was determined that stainless steel crowns used in pediatric dentistry represent no cytotoxic risk to the surrounding tissues, have a low probability of developing hypersensitivity to the coronal material and also that their biological properties make them suitable to use in pediatric dentistry for the reconstruction of damaged primary molar tissue.
    MeSH term(s) Child ; Humans ; Stainless Steel/chemistry ; Pediatric Dentistry ; Tooth, Deciduous
    Chemical Substances Stainless Steel (12597-68-1)
    Language English
    Publishing date 2023-06-21
    Publishing country Poland
    Document type Journal Article
    ZDB-ID 2559094-7
    ISSN 1509-409X
    ISSN 1509-409X
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  4. Article ; Online: Targeting SOX18 Transcription Factor Activity by Small-Molecule Inhibitor Sm4 in Non-Small Lung Cancer Cell Lines.

    Rodak, Olga / Mrozowska, Monika / Rusak, Agnieszka / Gomułkiewicz, Agnieszka / Piotrowska, Aleksandra / Olbromski, Mateusz / Podhorska-Okołów, Marzenna / Ugorski, Maciej / Dzięgiel, Piotr

    International journal of molecular sciences

    2023  Volume 24, Issue 14

    Abstract: The transcription factor SOX18 has been shown to play a crucial role in lung cancer progression and metastasis. In this study, we investigated the effect of Sm4, a SOX18 inhibitor, on cell cycle regulation in non-small cell lung cancer (NSCLC) cell lines ...

    Abstract The transcription factor SOX18 has been shown to play a crucial role in lung cancer progression and metastasis. In this study, we investigated the effect of Sm4, a SOX18 inhibitor, on cell cycle regulation in non-small cell lung cancer (NSCLC) cell lines LXF-289 and SK-MES-1, as well as normal human lung fibroblast cell line IMR-90. Our results demonstrated that Sm4 treatment induced cytotoxic effects on all three cell lines, with a greater effect observed in NSCLC adenocarcinoma cells. Sm4 treatment led to S-phase cell accumulation and upregulation of p21, a key regulator of the S-to-G2/M phase transition. While no significant changes in SOX7 or SOX17 protein expression were observed, Sm4 treatment resulted in a significant upregulation of SOX17 gene expression. Furthermore, our findings suggest a complex interplay between SOX18 and p21 in the context of lung cancer, with a positive correlation observed between SOX18 expression and p21 nuclear presence in clinical tissue samples obtained from lung cancer patients. These results suggest that Sm4 has the potential to disrupt the cell cycle and target cancer cell growth by modulating SOX18 activity and p21 expression. Further investigation is necessary to fully understand the relationship between SOX18 and p21 in lung cancer and to explore the therapeutic potential of SOX18 inhibition in lung cancer.
    MeSH term(s) Humans ; Lung Neoplasms/drug therapy ; Lung Neoplasms/genetics ; Lung Neoplasms/pathology ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/genetics ; Carcinoma, Non-Small-Cell Lung/pathology ; SOXF Transcription Factors/genetics ; SOXF Transcription Factors/metabolism ; Gene Expression Regulation, Neoplastic ; Cell Line ; Cell Line, Tumor
    Chemical Substances SOXF Transcription Factors ; SOX7 protein, human ; SOX18 protein, human
    Language English
    Publishing date 2023-07-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms241411316
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  5. Article ; Online: BCL11A Expression in Breast Cancer.

    Kątnik, Ewa / Gomułkiewicz, Agnieszka / Piotrowska, Aleksandra / Grzegrzółka, Jędrzej / Rusak, Agnieszka / Kmiecik, Alicja / Ratajczak-Wielgomas, Katarzyna / Dzięgiel, Piotr

    Current issues in molecular biology

    2023  Volume 45, Issue 4, Page(s) 2681–2698

    Abstract: B-cell leukemia/lymphoma 11A (BCL11A) is a transcription factor that regulates the expression of genes involved in cell division or apoptosis. A link between high BCL11A expression and a worse prognosis has been demonstrated in patients with various ... ...

    Abstract B-cell leukemia/lymphoma 11A (BCL11A) is a transcription factor that regulates the expression of genes involved in cell division or apoptosis. A link between high BCL11A expression and a worse prognosis has been demonstrated in patients with various cancers. The aim of this study was to investigate the expression pattern of BCL11A in breast cancer (BC) cases and mastopathy samples and to correlate the results with the clinicopathological data. The expression of the BCL11A protein was investigated using immunohistochemistry (IHC) on 200 cases of BC and 13 mastopathy samples. The level of BCL11A mRNA was determined using real-time PCR in 22 cases of BC and 6 mastopathy samples. The expression of BCL11A was also examined at the protein and mRNA levels in BC cell lines. A higher expression level of BCL11A in BC cases was shown compared to mastopathy samples. The expression level of BCL11A in BC cases and in the studied cell lines decreased with the increasing grade of histological malignancy (G). It was also negatively correlated with the primary tumor size. A significantly lower expression of BCL11A was found in BC that did not express estrogen or progesterone receptors and in triple-negative cases. The results of our research suggest that BCL11A may be relevant in the development of BC.
    Language English
    Publishing date 2023-03-23
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2000024-8
    ISSN 1467-3045 ; 1467-3037
    ISSN (online) 1467-3045
    ISSN 1467-3037
    DOI 10.3390/cimb45040175
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  6. Article: Application of Texture and Fractal Dimension Analysis to Evaluate Subgingival Cement Surfaces in Terms of Biocompatibility.

    Skośkiewicz-Malinowska, Katarzyna / Mysior, Martyna / Rusak, Agnieszka / Kuropka, Piotr / Kozakiewicz, Marcin / Jurczyszyn, Kamil

    Materials (Basel, Switzerland)

    2021  Volume 14, Issue 19

    Abstract: Biocompatibility is defined as "the ability of a biomaterial, prosthesis, or medical device to perform with an appropriate host response in a specific application". Biocompatibility is especially important for restorative dentists as they use materials ... ...

    Abstract Biocompatibility is defined as "the ability of a biomaterial, prosthesis, or medical device to perform with an appropriate host response in a specific application". Biocompatibility is especially important for restorative dentists as they use materials that remain in close contact with living tissues for a long time. The research material involves six types of cement used frequently in the subgingival region: Ketac Fil Plus (3M ESPE, Germany), Riva Self Cure (SDI, Australia) (Glass Ionomer Cements), Breeze (Pentron Clinical, USA) (Resin-based Cement), Adhesor Carbofine (Pentron, Czech Republic), Harvard Polycarboxylat Cement (Harvard Dental, Great Britain) (Zinc polycarboxylate types of cement) and Agatos S (Chema-Elektromet, Poland) (Zinc Phosphate Cement). Texture and fractal dimension analysis was applied. An evaluation of cytotoxicity and cell adhesion was carried out. The fractal dimension of Breeze (Pentron Clinical, USA) differed in each of the tested types of cement. Adhesor Carbofine (Pentron, Czech Republic) cytotoxicity was rated 4 on a 0-4 scale. The Ketac Fil Plus (3M ESPE, Germany) and Riva Self Cure (SDI, Australia) cements showed the most favorable conditions for the adhesion of fibroblasts, despite statistically significant differences in the fractal dimension of their surfaces.
    Language English
    Publishing date 2021-10-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma14195857
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  7. Article ; Online: Multimodal study of CHI3L1 inhibition and its effect on angiogenesis, migration, immune response and refractive index of cellular structures in glioblastoma.

    Rusak, Agnieszka / Buzalewicz, Igor / Mrozowska, Monika / Wiatrak, Benita / Haczkiewicz-Leśniak, Katarzyna / Olbromski, Mateusz / Kmiecik, Alicja / Krzyżak, Edward / Pietrowska, Aleksandra / Moskal, Jakub / Podhorska-Okołów, Marzenna / Podbielska, Halina / Dzięgiel, Piotr

    Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

    2023  Volume 161, Page(s) 114520

    Abstract: Glioblastoma is one of the most aggressive tumours with a poor response to treatment and a poor prognosis for patients. One of the proteins expressed in glioblastoma tissue is CHI3L1 (YKL-40), which is upregulated and known for its angiogenesis- ... ...

    Abstract Glioblastoma is one of the most aggressive tumours with a poor response to treatment and a poor prognosis for patients. One of the proteins expressed in glioblastoma tissue is CHI3L1 (YKL-40), which is upregulated and known for its angiogenesis-supporting and pro-tumour immunomodulatory effects in a variety of cancers. In this paper we present the anti-angiogenic, anti-migratory and immunomodulatory effects of the compound G721-0282, an inhibitor of CHI3L1. The inhibitor-induced changes were investigated using conventional techniques as well as the novel label-free digital holographic tomography (DHT), a quantitative phase imaging technique that allows the reconstruction of the refractive index (RI), which is used as an image contrast for 3D visualisation of living cells. DHT allowed digital staining of individual cells and intercellular structures based only on their specific RI. Quantitative spatially resolved analysis of the RI data shows that the concentration of G721-0282 leads to significant changes in the density of cells and their intracellular structures (in particular the cytoplasm and nucleus), in the volume of lipid droplets and in protein concentrations. Studies in the U-87 MG glioblastoma cell line, THP-1 monocytes differentiated into macrophages, human microvascular endothelial cells (HMEC-1) and in the spheroid model of glioblastoma composed of U-87 MG, HMEC-1 and macrophages suggest that inhibition of CHI3L1 may have potential in the antitumour treatment of glioblastoma. In this paper, we also propose a spheroid model for in vitro studies that mimics this type of tumour.
    MeSH term(s) Humans ; Glioblastoma/drug therapy ; Glioblastoma/metabolism ; Endothelial Cells/metabolism ; Refractometry ; Cell Differentiation ; Immunity ; Cell Line, Tumor ; Chitinase-3-Like Protein 1
    Chemical Substances CHI3L1 protein, human ; Chitinase-3-Like Protein 1
    Language English
    Publishing date 2023-03-13
    Publishing country France
    Document type Journal Article
    ZDB-ID 392415-4
    ISSN 1950-6007 ; 0753-3322 ; 0300-0893
    ISSN (online) 1950-6007
    ISSN 0753-3322 ; 0300-0893
    DOI 10.1016/j.biopha.2023.114520
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  8. Article: Chitin scaffolds derived from the marine demosponge

    Zawadzka-Knefel, Anna / Rusak, Agnieszka / Mrozowska, Monika / Machałowski, Tomasz / Żak, Andrzej / Haczkiewicz-Leśniak, Katarzyna / Kulus, Michał / Kuropka, Piotr / Podhorska-Okołów, Marzenna / Skośkiewicz-Malinowska, Katarzyna

    Frontiers in bioengineering and biotechnology

    2023  Volume 11, Page(s) 1254506

    Abstract: The use of stem cells for tissue regeneration is a prominent trend in regenerative medicine and tissue engineering. In particular, dental pulp stem cells (DPSCs) have garnered considerable attention. When exposed to specific conditions, DPSCs have the ... ...

    Abstract The use of stem cells for tissue regeneration is a prominent trend in regenerative medicine and tissue engineering. In particular, dental pulp stem cells (DPSCs) have garnered considerable attention. When exposed to specific conditions, DPSCs have the ability to differentiate into osteoblasts and odontoblasts. Scaffolds are critical for cell differentiation because they replicate the 3D microenvironment of the niche and enhance cell adhesion, migration, and differentiation. The purpose of this study is to present the biological responses of human DPSCs to a purified 3D chitin scaffold derived from the marine demosponge
    Language English
    Publishing date 2023-11-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2719493-0
    ISSN 2296-4185
    ISSN 2296-4185
    DOI 10.3389/fbioe.2023.1254506
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  9. Article ; Online: The Expression of Testin, Ki-67 and p16 in Cervical Cancer Diagnostics.

    Popiel-Kopaczyk, Aneta / Grzegrzolka, Jedrzej / Piotrowska, Aleksandra / Olbromski, Mateusz / Smolarz, Beata / Romanowicz, Hanna / Rusak, Agnieszka / Mrozowska, Monika / Dziegiel, Piotr / Podhorska-Okolow, Marzenna / Kobierzycki, Christopher

    Current issues in molecular biology

    2023  Volume 45, Issue 1, Page(s) 490–500

    Abstract: Testin is a protein expressed in normal human tissues, being responsible, with other cytoskeleton proteins, for the proper functioning of cell−cell junction areas and focal adhesion plaques. It takes part in the regulation of actin filament changes ... ...

    Abstract Testin is a protein expressed in normal human tissues, being responsible, with other cytoskeleton proteins, for the proper functioning of cell−cell junction areas and focal adhesion plaques. It takes part in the regulation of actin filament changes during cell spreading and motility. Loss of heterozygosity in the testin-encoding gene results in altered protein expression in many malignancies, as partly described for cervical cancer. The aim of our study was the assessment of the immunohistochemical (IHC) expression of testin in cervical cancer and its analysis in regard to clinical data as well the expression of the Ki-67 antigen and p16 protein. Moreover, testin expression was assessed by Western blot (WB) in commercially available cell lines. The IHC analysis disclosed that the expression of testin inversely correlated with p16 (r = −0.2104, p < 0.0465) and Ki-67 expression (r = −0.2359, p < 0.0278). Moreover, weaker testin expression was observed in cancer cases vs. control ones (p < 0.0113). The WB analysis of testin expression in the cervical cancer cell lines corresponded to the IHC results and showed a weaker expression compared to that in the control cell line. When we compared the expression of testin in cervical cancer cell lines, we found a weaker expression in HPV-negative cell lines. In summary, we found that the intensity of testin expression and the number of positive cells inversely correlated with the expression of Ki-67 (a marker of proliferation) and p16 (a marker of cell cycle dysregulation). This study shows that the combined assessment of testin, Ki-67 and p16 expression may improve cervical cancer diagnostics.
    Language English
    Publishing date 2023-01-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2000024-8
    ISSN 1467-3045 ; 1467-3037
    ISSN (online) 1467-3045
    ISSN 1467-3037
    DOI 10.3390/cimb45010032
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  10. Article: Czy magnetostymulacja moze mieć wpływ na gojenie ran? Badania in vitro.

    Rusak, Agnieszka / Rybak, Zbigniew

    Polimery w medycynie

    2013  Volume 43, Issue 3, Page(s) 147–152

    Abstract: Background: Variable magnetic field of low frequency (200-300 Hz) is one of physical methods used in reducing pain as well as regeneration of bone and soft tissue. In medical literature there are case reports about successful treatment of chronic wound ... ...

    Title translation Does magnetic stimulation affect wound healing? In vitro studies.
    Abstract Background: Variable magnetic field of low frequency (200-300 Hz) is one of physical methods used in reducing pain as well as regeneration of bone and soft tissue. In medical literature there are case reports about successful treatment of chronic wound healing with this method. However, there is a lack of research that could explain the mechanism of action of magnetic field in this area. Literature data show that magnetic fields have an influence on cells cultures in vitro. Cells reaction depends on cells line, field parameters and time of exposition.
    Objective: In our study we checked if the magnetic field of 180-195 Hz frequency influences Balb 3T3 cells viability.
    Material and methods: This study was conducted on mouse fibroblast Balb 3T3 cells, and the influence of variable magnetic field on cells was checked. Magnetic field was generated by Viofor JPS System Classic (Med&Life). Cells were seeded on 96-well plates. After 24 hours the cells culture was exposed on magnetic fields. Two controls and six groups was included in the study. Two programs generated by Viofor JPS System Classic were chosen: M1P2 and M2P2, as well as two intensities 6 and 12. Groups 1, 2, 5 and 6 were exposed once within two days, groups 3 and 4 were exposed three times a day every hour within two days. Experiment lasted two days and was repeated 3-5 times.
    Results: Experiment was evaluated with colorimetric MTT test. The test showed influence of magnetic field generated by Viofor JPS System Classic on viability of Balb 3T3 cells. Three from six chosen programs resulted in the increase of viability, compare to control. The control was taken as 100%. In groups 139%, 128%, 108% and 92% of viability was noted. Results were statisticaly significant in four groups (p < 0.05, Student's t test).
    Conclusions: The influence of magnetic fields generated by Viofor JPS System Classic (Med&Life) on mouse fibroblast Balb 3T3 cells was noted. Results suggest potential beneficial effect of this physical method on chronic wound treatment.
    MeSH term(s) Animals ; BALB 3T3 Cells/cytology ; BALB 3T3 Cells/radiation effects ; Cell Survival/radiation effects ; Cells, Cultured ; Magnetic Fields ; Mice ; Wound Healing/radiation effects
    Language Polish
    Publishing date 2013-07
    Publishing country Poland
    Document type English Abstract ; Journal Article
    ZDB-ID 193157-x
    ISSN 0370-0747
    ISSN 0370-0747
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