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1.
Int J Mol Sci ; 24(13)2023 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-37445781

RESUMO

The risk of losing a transplanted organ is high, and non-invasive markers to warn of this phenomenon are still being sought. We investigated the impact of post-transplant microchimerism on the function of the transplanted kidney. The study included 100 kidney transplant recipients, mostly women. All transplanted organs were from opposite-sex deceased donors. Microchimerism was assessed using multiplex PCR. Male DNA was detected in all urine samples from female recipients and in 13/56 blood samples from female kidney recipients. Female DNA was found in 31/44 urine samples from male recipients, but in none of the blood samples. Microchimerism in the urine of female recipients correlated positively with blood urea (Rs = 0.45; p = 5.84 × 10-4) and K+ ions (Rs = 0.29; p = 0.03), while microchimerism in the blood of female recipients also correlated positively with blood urea (Rs = 0. 28; p = 0.04), cystatin C (Rs = 0.31; p = 0.02) and the number of incompatible HLA alleles (Rs = 0.42; p = 0.01). A history of DGF was associated with higher urinary donor DNA concentrations in female recipients.: Post-transplant microchimerism may serve as a potential marker of chronic kidney rejection.


Assuntos
Transplante de Rim , Humanos , Masculino , Feminino , Transplante de Rim/efeitos adversos , Quimerismo , Quimeras de Transplante , Rejeição de Enxerto/genética , DNA/genética , Doadores de Tecidos , Ureia
2.
Cancers (Basel) ; 15(5)2023 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-36900243

RESUMO

The aim of this study was to analyze coping mechanisms and their psychological aspects during the treatment of neoplastic prostate hyperplasia. We have analyzed strategies and styles of coping with stress and self-esteem of patients diagnosed with neoplastic prostate hyperplasia. A total of 126 patients were included in the study. Standardized psychological questionnaires were used to determine the type of coping strategy by using the Stress Coping Inventory MINI-COPE, while a coping style questionnaire was used to assess the type of coping style by using the Convergence Insufficiency Symptom Survey (CISS). The SES Self-Assessment Scale was used to measure the level of self-esteem. Patients using adaptive strategies of coping with stress in the form of active coping, seeking support and planning had higher self-esteem. However, the use of maladaptive coping strategies in the form of self-blame was found to cause a significant decrease in patients' self-esteem. The study has also shown the choice of a task-based coping style to positively influence one's self-esteem. An analysis related to patients' age and coping methods revealed younger patients, up to 65 years of age, using adaptive strategies of coping with stress to have a higher level of self-esteem than older patients using similar strategies. The results of this study show that older patients, despite the use of adaptation strategies, have lower self-esteem. This group of patients should receive special care both from family and medical staff. The obtained results support the implementation of holistic care for patients, using psychological interventions to improve patients' quality of life. Early psychological consultation and mobilization of patients' personal resources may allow patients to change stress coping methods towards more adaptive forms.

3.
Artigo em Inglês | MEDLINE | ID: mdl-36767840

RESUMO

INTRODUCTION: Due to the SARS-CoV-2 coronavirus pandemic, the wearing of masks has become a common phenomenon. Most of the undesirable effects of using a protective face covering are usually related to the prolonged time of its wearing, and the adverse consequences of face coverings should be considered two-fold. The aim of the study was to evaluate the rate of contamination of the three types of face coverings (surgical, N95, and FFP2 masks) with the microorganism-aerobic bacteria, yeasts, and molds-after the 3 h exposure time. The study aimed to investigate the effects of wearing FFP2 masks (KN95) on respiratory function and the acid-base balance of the human body. RESULTS: The presence of S. aureus was confirmed in both nasal carriers and non-carriers which may demonstrate the cross-contamination and spread of this bacterium via hands. S. aureus was found on external and internal surfaces of face masks of each type, and therefore could also be transmitted via hands from external sources. The 3 h exposure time is not sufficient for Gram-negative rods and mold contamination. Moreover, there were no significant differences in most of the parameters studied between the first and second examinations, both in spirometry and capillary blood gas analysis (p > 0.05).


Assuntos
COVID-19 , Infecções Estafilocócicas , Humanos , COVID-19/epidemiologia , SARS-CoV-2 , Staphylococcus aureus , Pandemias , Equilíbrio Ácido-Base , Máscaras
4.
Artigo em Inglês | MEDLINE | ID: mdl-36231922

RESUMO

The COVID-19 pandemic, caused by severe acute respiratory syndrome coronavirus 2 virus (SARS-CoV-2), has triggered an enormous scientific response. Many studies have focused on understanding the entry of the SARS-CoV-2 virus into the host cell. The angiotensin-converting enzyme-2 (ACE2) is recognized as the host receptor used by SARS-CoV-2 to enter its target cells. Recent studies suggest that ACE2 gene polymorphisms might be candidates for genetic susceptibility to SARS-CoV-2 infection. The aim of this study is to evaluate the influence of ACE2 polymorphisms on COVID-19 disease risk and severity. In our study, we confirmed that there is a statistically significant increased risk of a more severe disease course of SARS-CoV-2 infection associated with the need for hospitalization in intensive care for patients with specific polymorphisms of the ACE2 gene. The most significant correlation was found for variant ACE2 rs2285666 (AA allele, OR = 2.12, p = 0.0189) and ACE2 rs2074192 (TT allele, OR = 2.05, p = 0.0016), and for ACE2 rs4646174 (GG allele, OR = 1.93, p = 0.0016), ACE2 rs4646156 (TT allele OR = 1.71, p = 0.008) and ACE2 rs2158083 (TT allele OR = 1.84, p = 0.0025). In conclusion, our findings identify that certain ACE2 polymorphisms impact the severity of COVID-19 disease independently of other well-known risk factors.


Assuntos
Enzima de Conversão de Angiotensina 2/genética , COVID-19 , Angiotensinas/genética , COVID-19/epidemiologia , COVID-19/genética , Predisposição Genética para Doença , Humanos , Pandemias , Peptidil Dipeptidase A/genética , SARS-CoV-2/genética
5.
Artigo em Inglês | MEDLINE | ID: mdl-36141511

RESUMO

In the last decade, there has been a noticeable increase in the interest in aesthetic and corrective surgery regardless of a patient's age. Both aesthetical and practical considerations are a motivation for patients undergoing plastic surgery. The goal of this study is to analyze dependencies between welfare, self-assessment and body self-perception in patients that qualified for plastic and aesthetic surgical procedures. The study group included 164 female patients, of whom 124 patients filled out a questionnaire before and after surgery. The questionnaire included demographic data and scales such as the Body Esteem Scale, the Rosenberg Self-Esteem Scale-SES, the Satisfaction with Life Scale-SWLS, the Flourishing Scale and the Scale of Positive and Negative Experience-SPANE. The first hypothesis concerned the subjective assessment of body self-perception after the procedure. The results of the study confirm this hypothesis-female patients after surgery rate their body self-perception higher, which indicates a positive influence of plastic and aesthetic surgery that increased in the subjective assessment of 66 examined patients. Moreover, the study revealed a higher self-assessment after procedures. On the other hand, the results indicated that younger patients had a higher body assessment, but there was no increase in self-assessment. Except for breast augmentation surgery, there was no influence on self-assessment and life satisfaction improvement after other surgical procedures. In patients up to 48 years old, after surgery, there was a significant dependence between subjective body self-assessment and all surveyed forms of welfare. In the case of patients after 48 year of age, there was a relationship between life satisfaction and body self-perception both before and after surgical treatment.


Assuntos
Imagem Corporal , Mamoplastia , Estética , Feminino , Humanos , Satisfação do Paciente , Qualidade de Vida , Autoimagem , Autoavaliação (Psicologia) , Inquéritos e Questionários
6.
Artigo em Inglês | MEDLINE | ID: mdl-35682510

RESUMO

The purpose of this study was to analyze the strategies and styles of coping with stress and self-esteem in patients diagnosed with prostate cancer. One hundred and five patients with prostate cancer participated in the study. Coping strategies were assessed with the Mini-Cope questionnaire, coping styles were assessed with the Coping Inventory for Stressful Situations, and self-esteem was assessed with the Rosenberg Self-Esteem Scale. Patients' self-esteem and stress coping styles and strategies were analyzed using a Pearson correlation analysis. A stepwise linear regression analysis was performed to determine the predictors of self-esteem. The self-esteem level was positively related to the task-focused style (r = 0.228) and negatively related to the emotion-focused style (r = −0.329). The self-esteem level was significantly positively related to the strategies of active coping (r = 0.358), planning (r = 0.355), and seeking emotional support (r = 0.319) and was negatively related to self-blaming (r = −0.448) and to substance use (r = −0.301). The predictors of self-esteem level were: the strategies of self-blaming, planning, and the support-seeking dimension (F(3, 95) = 17.65; p < 0.001), explaining 33.8% of the variability in subjects' self-esteem level. The moderating effect of age occurred in patients up to 65 years; it was statistically insignificant in patients older than 65 years. Replacement of the self-blame strategy and the emotion-focused style may lead to higher self-esteem of patients. The level of self-esteem can predict the strategies of self-blaming, planning, and the dimension of seeking support. For patients up to 65 years, psychological support should include reinforcement of adaptive forms of coping.


Assuntos
Neoplasias da Próstata , Estresse Psicológico , Adaptação Psicológica , Humanos , Masculino , Prostatectomia , Neoplasias da Próstata/cirurgia , Autoimagem , Estresse Psicológico/psicologia , Inquéritos e Questionários
7.
Transplant Proc ; 54(3): 595-599, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35256196

RESUMO

BACKGROUND: In Poland, 95% of organs for transplantation come from donation after brain death (DBD). In 2010, Poland officially joined the European countries in which donation after circulatory death is accepted by law. Currently, the Pomeranian Medical University Transplant Center is the only active location for uncontrolled donation after circulatory death (uDCD) in Poland. To estimate the results of uDCD kidney transplantation with a classical approach to organ recovery, we analyzed data from an early phase of uDCD program. METHODS: Prospective observation of uDCD kidney allografts (group 1; n = 8) compared with DBD kidney allografts (group 2; n = 30). The organ recovery protocol was set up on rapid abdominal access without regional perfusion before procurement. RESULTS: The organs recovered from uDCD during a 24-month period increased the volume of kidneys transplanted at the center by 9.2%. Delayed graft function was diagnosed in 100% vs 46% of allografts (P = .03), respectively. Nevertheless, early posttransplant follow-up did not reveal any graft loss or recipient death cases in the DCD group. After 12 months of follow-up, the mean glomerular filtration rate was 44.5 vs 57.9 mL/min (P < .02), respectively. Crucial factors for acceptable results of uDCD are strict pretransplant assessment of recovered organs and efficient coordination of the transplant team. CONCLUSIONS: Conservative recovery protocol in uDCD under strict prerequisites is feasible to consider in the organ procurement pathway. Preliminary results provide space for an increase in the organ donor pool.


Assuntos
Sobrevivência de Enxerto , Obtenção de Tecidos e Órgãos , Algoritmos , Morte Encefálica , Morte , Humanos , Estudos Prospectivos , Estudos Retrospectivos , Doadores de Tecidos
8.
Artigo em Inglês | MEDLINE | ID: mdl-34769979

RESUMO

BACKGROUND: Irritable bowel syndrome (IBS) is a chronic functional gastrointestinal disorder (FGID), in which etiology and pathogenesis are not fully explored. There is an ongoing need for more population studies adhering to new ROME IV criteria. In the current study, which follows our previous investigation among participants of the Woodstock Rock Festival in Poland, we aimed to evaluate the prevalence of IBS and its relation to age, gender, education, and IBS type. METHODS: Rome IV criteria questionnaire was used to assess abdominal complaints of 386 participants of the Woodstock Rock festival 2018. RESULTS: Analyzed data revealed that Rome IV criteria were met by 42 participants (11.41%), 11 men and 31 women (p = 0.0028), with following types of IBS: IBS-M (mixed form) 55%, IBS-D (with diarrhea) 33%, IBS-U (unclassified) 10%, IBS-C (with constipation) 2%. No statistically significant correlation between IBS prevalence and age, gender, or education (p > 0.05) was found. CONCLUSIONS: The prevalence of IBS among major rock festival participants in Poland was high. Women met the criteria more often than men, which is consistent with global epidemiology for many years. Among participants of the Woodstock Rock Festival, the most frequent subtype was IBS-M, the rarest-IBS-C. There is a need of conducting cohort studies in bigger groups in our population.


Assuntos
Síndrome do Intestino Irritável , Estudos Transversais , Feminino , Férias e Feriados , Humanos , Síndrome do Intestino Irritável/epidemiologia , Masculino , Polônia/epidemiologia , Prevalência , Cidade de Roma , Inquéritos e Questionários
9.
Antioxidants (Basel) ; 10(8)2021 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-34439511

RESUMO

Ischemia-reperfusion injury (IRI) after renal transplantation is a complex biochemical process. The first component is an ischemic phase during kidney storage. The second is reperfusion, the main source of oxidative stress. This study aimed to analyze the activity of enzymes and concentrations of non-enzymatic compounds involved in the antioxidant defense mechanisms: glutathione (GSH), glutathione peroxidase (GPX), catalase (CAT), superoxide dismutase (SOD), glutathione reductase (GR), glutathione transferase (GST), thiobarbituric acid reactive substances (TBARS), malondialdehyde (MDA), measured in preservation fluid before transplantation of human kidneys (KTx) grafted from brain dead donors. The study group (N = 66) was divided according to the method of kidney storage: Group 1-hypothermic machine perfusion (HMP) in LifePort perfusion pump, n1 = 26, and Group 2-static cold storage (SCS), n2 = 40. The measurements of kidney function parameters, blood count, and adverse events were performed at constant time points during 7-day hospitalization and 3-month follow-up. Kidney perfusate in Group 2 was characterized by significantly more acidic pH (p < 0.0001), higher activity of GPX [U/mgHb] (p < 0.05) and higher concentration of MDA [µmol/L] (p < 0.05). There was a statistically significant improvement of kidney function and specific blood count alterations concerning storage method in repeated measures. There were aggregations of significant correlations (p < 0.05) between kidney function parameters after KTx and oxidative stress markers: diuresis & CAT, Na+ & CAT, K+ & GPX, urea & GR. There were aggregations of significant correlations (p < 0.05) between recipient blood count and oxidative stress markers: CAT & MON, SOD & WBC, SOD & MON. Study groups demonstrated differences concerning the method of kidney storage. A significant role of recipient's gender, gender matching, preservation solution, and perfusate pH was not confirmed, however, basing on analyzed data, the well-established long-term beneficial impact of HMP on the outcome of transplanted kidneys might partially depend on the intensity of IRI ischemic phase and oxidative stress, reflected by the examined biomarkers.

10.
Int J Mol Sci ; 22(15)2021 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-34360776

RESUMO

Oxidative stress is an imbalance between pro- and antioxidants that adversely influences the organism in various mechanisms and on many levels. Oxidative damage occurring concomitantly in many cellular structures may cause a deterioration of function, including apoptosis and necrosis. The damage leaves a molecular "footprint", which can be detected by specific methodology, using certain oxidative stress biomarkers. There is an intimate relationship between oxidative stress, inflammation, and functional impairment, resulting in various diseases affecting the entire human body. In the current narrative review, we strengthen the connection between oxidative stress mechanisms and their active compounds, emphasizing kidney damage and renal transplantation. An analysis of reactive oxygen species (ROS), antioxidants, products of peroxidation, and finally signaling pathways gives a lot of promising data that potentially will modify cell responses on many levels, including gene expression. Oxidative damage, stress, and ROS are still intensively exploited research subjects. We discuss compounds mentioned earlier as biomarkers of oxidative stress and present their role documented during the last 20 years of research. The following keywords and MeSH terms were used in the search: oxidative stress, kidney, transplantation, ischemia-reperfusion injury, IRI, biomarkers, peroxidation, and treatment.


Assuntos
Injúria Renal Aguda/metabolismo , Transplante de Rim , Rim/metabolismo , Estresse Oxidativo , Espécies Reativas de Oxigênio/metabolismo , Traumatismo por Reperfusão/metabolismo , Injúria Renal Aguda/história , Injúria Renal Aguda/patologia , Animais , Biomarcadores/metabolismo , História do Século XXI , Humanos , Rim/patologia , Traumatismo por Reperfusão/história , Traumatismo por Reperfusão/patologia
11.
Biomedicines ; 9(4)2021 Apr 13.
Artigo em Inglês | MEDLINE | ID: mdl-33924469

RESUMO

Ischemia-reperfusion injury (IRI) occurring after renal transplantation is a complex biochemical process that can be monitored by specific biomarkers. The roles of those are not yet fully elucidated. The aim of this study was to analyze the concentrations of endothelins (ET-1, ET-2, and ET-3), interleukin-18 (IL-18), and neutrophil gelatinase-associated lipocalin (NGAL) during the reperfusion of human kidneys grafted from brain dead donors and later transplanted. The study group (n = 44) was analyzed according to the method of kidney storage: Group 1 underwent hypothermic machine perfusion (HMP) in the LifePort perfusion pump (n = 22), and Group 2 underwent static cold storage (SCS) (n = 22). The analysis of kidney function was performed daily during the first seven days after transplantation. The kidneys in Group 1 were characterized by higher absolute concentrations of ET-1, IL-18, and NGAL, as well as a lower concentration of ET-2 (p = 0.017) and ET-3. The relative increase of ET-1 (p = 0.033), ET-2, and ET-3 during reperfusion was lower in this group, while the relative decrease of NGAL was higher. Group 1 was also characterized by significant decrease of IL-18 (p = 0.026) and a tendency for better kidney function based on the higher total diuresis, higher glomerular filtration rate (GFR), higher potassium level, lower serum creatinine, and lower urea concentration during the seven-day postoperative observation period. The long-term beneficial impact of hypothermic machine perfusion on the outcome of transplanted kidneys may rely on the early modified proceedings and intensity of ischemia-reperfusion injury reflected by the dynamics of the concentrations of examined biomarkers.

12.
Int Immunopharmacol ; 89(Pt A): 107059, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33039969

RESUMO

Kidney transplantation is the target method of treating chronic kidney disorders. It improves the comfort of patient life by eliminating the need for repeated dialysis. The aim of the study was to examine the correlation between tacrolimus (TAC) dose and genetic variation for interleukin-10 (IL-10) and its effect on the therapeutic outcome. In addition, the correlations between the IL-10 polymorphism andthe clinical and the biochemical parameters of TAC patients were also analyzed. The study included 209 subjects after kidney transplantation, who received TAC every 12 and 24 h. Drug concentrations in blood, selected morphological and biochemical parameters, and the genetic variation of IL-10 (-1082A > G) which may affect immunosuppressant dosage and risk of acute graft rejection were analyzed. Genetic analyses were performed using real-time PCR. No significant correlations between the clinical and the biochemical parameters and IL-10-1082A > G polymorphism for patients receiving TAC after kidney transplantation were found. The analysis of the correlation between TAC dose and IL-10 genetic variation for the -1082A > G polymorphism revealed that patients with the AA genotype required lower immunosuppressive drug doses (AA: 3.54 ± 2.38 mg/day vs AG: 6.18 ± 5.10 mg/day, GG: 4.44 ± 3.01 mg/day). Furthermore, frequencies of the genotypes for the IL-10 -1082A > G polymorphism were characterized by a significantly higher frequency of the AA genotype among TAC 24 as compared to TAC 12 patients. The results of the study indicated that the IL-10 -1082A > G polymorphism may in fact influence the TAC dose. The biochemical parameters of the renal profile in relation to the IL-10 genetic variations were not indicative of higher risk of acute rejection after transplantation.


Assuntos
Variação Genética , Imunossupressores/uso terapêutico , Interleucina-10/genética , Transplante de Rim , Tacrolimo/uso terapêutico , Adulto , Relação Dose-Resposta a Droga , Genótipo , Rejeição de Enxerto/tratamento farmacológico , Humanos , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , Tacrolimo/administração & dosagem , Transplantados
13.
Transplant Proc ; 52(7): 2036-2042, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32334797

RESUMO

BACKGROUND: Acid-base balance disorders are a crucial element of ischemia-reperfusion injury during organ transplantation. Hypoxia during organ procurement and storage cause cellular homeostasis imbalance with impact on further graft function. Acidosis in preserved kidney caused by lactate accumulation may have an important role as a common denominator of various pathways leading to cellular damage. METHODS: Our trial sought to answer questions regarding a range of pH alterations in the kidney before the transplantation, their potential cause, and how this may affect further outcome of the kidney transplantation procedure. Perfusion fluid for pH analysis was obtained from perfusion pump (PP) or through kidney flushing at the end of preservation depending on the storage method. RESULTS: A total of 66 sample results were collated with the data from the transplant registry, hospitalization, and outpatient department. Statistical analysis was conducted linking pH results with factors related to donor, recipient, preservation, and outcome according to designed schematics. Mean perfusate pH was significantly lower in simple hypothermia (SH) vs the PP storage group (6.77 vs 7.11; P < .001). All samples of perfusate pH in the SH group were below physiological values (<7.35), and in 10% of samples in the SH group, pH >7.00. CONCLUSIONS: We concluded that kidney storage in cold ischemia is associated with organ acidosis independent of preservation method and that SH is correlated with significantly bigger acidosis than storage in PP, which is an important procedure removing an excessive amount of hydrogen ions from kidney microcirculation, decreasing cell damage.


Assuntos
Desequilíbrio Ácido-Base/etiologia , Isquemia Fria/efeitos adversos , Transplante de Rim , Preservação de Órgãos/efeitos adversos , Perfusão/métodos , Isquemia Fria/métodos , Humanos , Concentração de Íons de Hidrogênio , Transplante de Rim/métodos , Preservação de Órgãos/métodos
14.
Ann Transplant ; 24: 108-114, 2019 Feb 25.
Artigo em Inglês | MEDLINE | ID: mdl-30799432

RESUMO

BACKGROUND Immunosuppressive drugs such as cyclosporine A (CsA) are characterized by a narrow therapeutic range and high interindividual pharmacokinetic variations. Therefore, the effective monitoring of drug serum level is crucial for successful therapy. This variability can be caused by polymorphisms in genes encoding drug transporters and enzymes responsible for biotransformation. The aim of this study was to determine the relationship between CYP3A4*1B and MDR1 polymorphisms and dose requirements to achieve the target therapeutic range for CsA. MATERIAL AND METHODS The study group consisted of 184 patients after kidney transplantation who were treated with immunosuppressive therapy. The MDR1 3435C>T and CYP3A4*1B polymorphisms were determined by the real-time PCR using the LightCycler® 480 device (Roche Diagnostics). RESULTS Patients with the CYP3A4*1/*1 genotype received the lowest mean dose of CsA compared to CYP3A4*1/*1B, and had a higher average drug concentration in the blood. In the case of MDR1 3435C>T polymorphism, we observed that patients with the CC genotype received lower doses of CsA than patients with the CT and TT genotypes. Average drug concentration in the blood was comparable to individuals with different MDR-1 genotypes. Analysis of dependence between both polymorphisms and concentration/dose ratio showed no statistically significant differences. CONCLUSIONS The characterization of CYP3A4*1B and 3435C>T MDR1 polymorphism cannot provide useful guidance for individualizing CsA dosages in renal transplant patients by indicating the optimal dose of these drugs without exposing patients to possible adverse effects associated mainly with nephrotoxicity.


Assuntos
Membro 1 da Subfamília B de Cassetes de Ligação de ATP/genética , Ciclosporina/uso terapêutico , Citocromo P-450 CYP3A/genética , Imunossupressores/uso terapêutico , Polimorfismo de Nucleotídeo Único , Adulto , Idoso , Alelos , Feminino , Frequência do Gene , Estudos de Associação Genética , Genótipo , Humanos , Transplante de Rim , Masculino , Pessoa de Meia-Idade , Farmacogenética , Resultado do Tratamento
15.
J Biomed Mater Res B Appl Biomater ; 107(6): 1889-1897, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30578598

RESUMO

Photo-cross-linked polymers have attracted a lot of attention in the biomedical field. The main benefits of these materials are related to the fact that they are most of the time viscous liquids or pastes that adapt a custom and fixed shape on demand of the user. Present study deals specifically with the biological response upon subcutaneous implantation of four different materials in rabbits. In the study 20 rabbits were divided into four groups (each five rabbits): Groups 1-3 were implanted with tested new obtained by us macromonomers (P1838-DMA; P1838-UR; PDEGA-UR - respectively), while group 4 (control) was implanted with the mesh (PLA) routinely used for surgical treatment of a hernia. The new compounds were polarized earlier using ultraviolet radiation to obtain cross-linked networks. The polymers in the form of discs were then implanted subcutaneously in dorsal region of rabbits. After 28 days polymers were explanted and examined. Microscopic observation evaluated: thickness of the connective tissue capsule around the discs, cells of inflammatory response, disc surface erosion, spectroscopic analysis. The examined materials cause no chronic inflammation, abscesses or tissue necrosis, and the biological response is similar to observed in control group. Therefore, new synthetic materials could be considered as biocompatible and safe. Materials undergo slow degradation of ester bonds and surface erosion and degradation products could be eliminated probably by phagocytosis. On the basis on the afore mentioned knowledge, we formulated hypothesis, that the new polymers are well tolerated by the adjacent tissues. The aim of the following study was to examine reaction of the tissue on new types of prepolymerized material implanted subcutaneously. The obtained results suggest, that the new UV cross-linked polymers do not affect negatively on the connective tissue that is in the contact with the implants. Furthermore, the used materials are in the liquid form, thus they could be easily performed in in minimally invasive laparoscopic treatment of abdominal hernias. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1889-1897, 2019.


Assuntos
Materiais Biocompatíveis , Teste de Materiais , Polímeros , Telas Cirúrgicas , Raios Ultravioleta , Animais , Materiais Biocompatíveis/química , Materiais Biocompatíveis/farmacologia , Polímeros/química , Polímeros/farmacologia , Coelhos
16.
Ann Transplant ; 23: 874-878, 2018 Dec 21.
Artigo em Inglês | MEDLINE | ID: mdl-30573723

RESUMO

BACKGROUND Stem and progenitor cells are of great interest in all medical procedures involving tissue regeneration. There is a consensus that the use of stem cells after solid organ transplantation may play a role in tissue repair and in immunosuppression. The aim of this study was to determine possible relations between stem cell count and the immune response in a group of patients after kidney transplantation. MATERIAL AND METHODS The study was conducted on a group of 100 patients who underwent kidney transplantation. The following phenotypic markers of the studied cell subpopulations were adopted: Treg cells (CD3+CD4+CD25high), circulating hematopoietic cells (CD34+CD133+CD45+CD38-), and non-hematopoietic cells (Lin-CXCR4+CD133-CD45-). Cell subpopulations were assessed using LSRII flow cytometer (BD Biosciences, San Jose, CA, USA). RESULTS Positive correlation was observed between non-hematopoietic stem cells percentage and recipient's platelets count (P=0.04). Moreover, a higher percentage of non-hematopoietic cells was accompanied by lower numbers of B lymphocytes (P=0.03) and Treg cells (P=0.02). CONCLUSIONS Our study revealed significant associations between the intensity of ongoing immune response processes and tissue damage, and the release of stem and progenitor cells into circulation. These findings suggest their role in the stimulation of protective processes in terms of graft regeneration.


Assuntos
Imunidade Adaptativa , Linfócitos B/citologia , Transplante de Rim , Células-Tronco/citologia , Linfócitos T/citologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
17.
Ann Transplant ; 11(3): 12-4, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17494294

RESUMO

Blood vessel complications are one of most important problems in patients after renal transplantation. They influence graft chances and they are also often direct life threat, requiring fast diagnosis and immediate surgical treatment. Described case concern septic hemorrhage in vessel junction region after transplant nephrectomy, reoperated 5 times because of this complication. We discuss occurrence and severity of septic hemorrhages, usual coexisting complications, ways of surgical treatment, course of infections leading to hemorrhage and similar cases reported. As the most frequent surgical techniques we found bypass axillo-femoralis, femoro-femoralis suprapubic and through formanen obturatorius and this kind of treatment as the most effective.


Assuntos
Hemorragia/etiologia , Transplante de Rim/efeitos adversos , Nefrectomia/efeitos adversos , Doenças Vasculares Periféricas/etiologia , Sepse/etiologia , Anastomose Cirúrgica/métodos , Infecções por Escherichia coli/etiologia , Artéria Femoral/patologia , Artéria Femoral/cirurgia , Humanos , Artéria Ilíaca/patologia , Artéria Ilíaca/cirurgia , Nefropatias/cirurgia , Masculino , Pessoa de Meia-Idade , Artéria Renal/patologia , Artéria Renal/cirurgia , Reoperação
18.
Pol Arch Med Wewn ; 111(5): 579-87, 2004 May.
Artigo em Polonês | MEDLINE | ID: mdl-15508809

RESUMO

INTRODUCTION: Long asymptomatic course of diabetes and insufficient treatment lead to many chronic complications. AIM OF STUDY: Assessment of the quality of ambulatory diabetes care in Szczecin and nearest region. MATERIAL AND METHODS: In year 2001 patients with previously diagnosed diabetes hospitalized in 35 wards of several hospitals in Szczecin were inquired for data concerning ambulatory care before hospitalization. STUDY GROUP: 120 subjects (60 women and 60 men), aged 65 +/- 13 years, diabetes duration 9.1 +/- 7.1 years. Type 2 diabetes--104 cases, type 1-10 cases, other types of diabetes--6 cases. RESULTS: Health care was provided by general practitioners (GPs) for 63% of patients, by diabetologist for 31% of them; 6% stayed out of control. In the proceeding month 49% of subjects attended visit related to diabetes; in 10% such a visit was reported in the period longer than 6 months. Glucose measurement performed every day was reported by 28% of subjects, once a month--by 36%, rarely--by 15%. Blood pressure measurements were performed by doctors in 43% of subjects, self control was performed by 42% of them and in 10% blood pressure was not measured at all. In the proceeding year eyes examination related to diabetes was performed in 63% of patients; in 26% such examination was never done. Foot examination was never done in 66% of diabetics. ECG examination was done in 57% of subjects last year, in 39% it was never done. Cholesterol serum level was measured last year in 52% of subjects. CONCLUSIONS: 1. Quality of ambulatory diabetes care is highly unsatisfactory and insufficient. 2. To improve health care for diabetics obligatory training in practical diabetology was conducted for all GPs from north-west region of Poland in 2002 y.


Assuntos
Assistência Ambulatorial/normas , Diabetes Mellitus Tipo 2/terapia , Avaliação de Processos e Resultados em Cuidados de Saúde , Idoso , Glicemia/metabolismo , Pressão Sanguínea , Colesterol/sangue , Diabetes Mellitus/terapia , Diabetes Mellitus Tipo 1/terapia , Diabetes Mellitus Tipo 2/sangue , Pé Diabético/prevenção & controle , Eletrocardiografia , Endocrinologia , Medicina de Família e Comunidade , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Rim/fisiopatologia , Masculino , Pessoa de Meia-Idade , Oftalmoscopia , Polônia
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