Cell and Organ Transplantology最新文献

{"title":"Human umbilical cord-derived mesenchymal stem cells and nitric oxide modulators attenuate the proinflammatory cytokine pattern in experimental antiphospholipid syndrome in mice","authors":"N. Mekhno, A. Dovgalyuk, M. Korda, O. Yaremchuk","doi":"10.22494/cot.v12i1.163","DOIUrl":"https://doi.org/10.22494/cot.v12i1.163","url":null,"abstract":"Antiphospholipid syndrome is an autoimmune disease characterized by vascular thrombosis and/or obstetric pathology and the presence of antibodies against membrane phospholipids or certain phospholipid-related proteins. Objective. The aim of the research is to study the effect of mesenchymal stem cells, nitric oxide modulators (L-arginine and aminoguanidine) on the level of cytokines in bronchoalveolar lavage in experimental antiphospholipid syndrome in mice. Material and methods. Antiphospholipid syndrome was modeled on female BALB/c mice by intramuscular injections of cardiolipin 1.2 mg/kg 4 times with a 14-day interval. Cryopreserved human umbilical cord-derived mesenchymal stem cells (5×106 cells/kg) were injected once intraperitoneally, L-arginine (25 mg/kg) and aminoguanidine (10 mg/kg) were administered intraperitoneally 1 time per day during 10 days after APS had developed. The cytokines concentration in bronchoalveolar lavage from the lungs was assessed by means of ELISA in 10 days after APS development. Results. In the bronchoalveolar lavage of the BALB/c mice with experimental APS, an increased level of pro-inflammatory cytokines IL-1β, IL-6, TNF-α and decreased level of anti-inflammatory IL-4 and IL-10 were found. It was established that in cases of APS and administration of stem cells the concentration of proinflammatory cytokines decreased: IL-1β by 32.4 %, IL-6 by 30.6 % and TNF-α by 36.1 %, respectively, compare to the APS animals. At the same time the level of IL-4 increased by 50.5 % and IL-10 – by 57.5 % in the group of animals administered with stem cells compare to those with APS. Conclusion. In cases of correction of modeled antiphospholipid syndrome in mice using mesenchymal stem cells and combined application of mesenchymal stem cells and nitric oxide modulators (L-arginine and aminoguanidine), a decrease in the level of pro-inflammatory cytokines (IL-1β, IL-6, TNF-α ) and an increase in the level of anti-inflammatory cytokines (IL-4 and IL-10) in bronchoalveolar lavage has been established.","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"110 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141033320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Foreign experience of legal regulation of criminal liability for violation of the procedure for transplantation of human anatomical materials established by law","authors":"Yu. O. Tkach","doi":"10.22494/cot.v12i1.162","DOIUrl":"https://doi.org/10.22494/cot.v12i1.162","url":null,"abstract":"The article examines the experience of individual countries in matters of legal regulation of criminal liability for violation of the procedure for transplantation of human anatomical materials in order to determine important legal assets of foreign legislation, which could be discussed for the purpose of further implementation in Ukrainian legislation. Within the framework of the article, we will analyze national and international legislation, namely, we will compare the content of Articles 143 and 144 of the Criminal Code of Ukraine with the content of the corresponding articles and provisions in the legislation of several countries from the perspective of the used terminology, interpretation of concepts, descriptions of crimes, measures of criminal liability, etc. The Constitution of Ukraine guarantees every person the right to life. However, experts increasingly raise questions about various violations of this right from the perspective of transplantation of human anatomical materials. Today, criminal offenses in relation to both donors and recipients become difficult to detect due to high self-interest and profitability, disguised nature, network systematicity, extensive illegal infrastructure and fast mechanisms for its recovery, group organization and strong connections with other criminal groups, use of deception, coercion, intimidation and other methods of forced donation, corruption in the field of donation, large-scale latent level of crimes related to transplantation. Detection of illegal transplantation is also burdened by their contradictory geography, when potential donors are recruited in the so-called \"depressed\" countries around the world, and anatomical materials are seized in countries that are highly developed in the field of transplantology, having loyal legislation to carry out such operations. In Ukraine, the detection of such crimes is also aggravated by the fact that people who are ready to illegally donate their organs for payment, travel to remove the organ outside the country and carry out their plans in other countries (\"transplant tourism\"). Due to the low level of information and enlightenment of the society in matters of transplantation, the detection of crimes in this area is also complicated by the so-called \"victimhood\" of people (both donors and recipients) – a set of personal traits that cause a high probability of becoming the object of a criminal attack (a tendency to become a victim of crime). These grounds contribute to a dynamic increase in the number of violations of the law-enforced procedure for the transplantation of human anatomical materials, which constitutes a high public danger. At the same time, the legal regulation of criminal liability for such violations still has certain differences. Therefore, the study of foreign experience in matters of transplantation, the comparison of the norms of articles in the Criminal Codes of different countries, and the analysis of concepts used in normative leg","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"24 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141054129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Levels of melatonin and some indicators of angiogenesis, antioxidant system and lipid peroxidation in blood plasma in women with uterine leiomyoma","authors":"B. Sokolov, A. Berbets, Shashi Kant, O. Yuzko","doi":"10.22494/cot.v12i1.161","DOIUrl":"https://doi.org/10.22494/cot.v12i1.161","url":null,"abstract":"Uterine leiomyoma is one of the most common gynaecological diseases, which often leads to loss of fertility. It is known that in this pathology, damage to the tissues of the uterus is accompanied by oxidative stress, and the mechanisms of its compensation play a decisive role in the process of myometrial regeneration, especially when performing organ-preserving operations. The aim of the study was to determine the levels of melatonin, reproductive hormones and state of angiogenesis, antioxidant system and lipid peroxidation in women of reproductive age who were diagnosed with uterine leiomyoma. Material and methods. 60 women of reproductive age with uterine leiomyoma (study group) were examined. The control group consisted of 20 healthy women of the same age group. Melatonin levels in women's blood were determined once, on an empty stomach, at 8 a.m.; the concentrations of estradiol and progesterone in the follicular phase of the menstrual cycle were also measured. The state of the angiogenesis system was studied by examining the levels of vascular endothelial growth factor (VEGF) and the content of the final metabolites of nitric oxide NO in blood plasma. The activity of the antioxidant system was assessed by blood plasma concentrations of reduced glutathione, glutathione peroxidase, and glutathione transferase. Indicators of lipid peroxidation were investigated by the content of malondialdehyde (MDA) in blood plasma and erythrocytes. Results. It was found that in the patients of the study group with leiomyoma, there was a significantly lower level of melatonin in blood plasma (111.1 ± 18.5 ng/mL) compared to the control group (153.5 ± 8.5 ng/mL), while the concentration of estradiol was almost three times higher (107.4 ± 25.3 pg/mL) compared to the control group (36.2 ± 3.2 pg/mL), and the concentration of progesterone was 1.9 times higher (2.1 ± 0.4 ng/mL compared to 1.1 ± 0.5 ng/mL in the control group). The level of VEGF in blood plasma in women with uterine leiomyoma was also higher (90.4 ± 23.6 pg/mL) compared to the control group (35.1 ± 8.3 pg/mL), as well as the concentration of final metabolites of nitric oxide, which reached 25.3 ± 5.9 pg/mL compared to 9.9 ± 3.9 pg/mL in the control group. The reduced glutathione level in the blood plasma of women with uterine leiomyoma was significantly lower (0.77 ± 0.13 µmol/L) compared to healthy women (1.02 ± 0.14 µmol/L) in the control group, while the concentrations of glutathione-S-transferase and glutathione peroxidase enzymes were higher (161.3 ± 22.3 ng/mL and 235.7 ± 35.9 ng/mL, respectively), whereas in the control group these indicators were 118.9 ± 18.0 ng/mL and 105.3 ± 41.2 ng/mL, respectively. The MDA content in women of the study group was higher, measuring 5.2 ± 0.8 nmol/L in plasma and 10.8 ± 1.1 nmol/L in erythrocytes compared to 2.3 ± 0.8 nmol/L and 5.3 ± 0.8 nmol/L in the control group, respectively. Conclusions. The levels of melatonin and reduced glutathione in the blood pla","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"2020 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141026762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-guided accesses for regenerative injection therapy of hip and knee","authors":"S. Strafun, O. Haiko, Y. Holiuk, L. Klymchuk, T. Maslova","doi":"10.22494/cot.v12i1.164","DOIUrl":"https://doi.org/10.22494/cot.v12i1.164","url":null,"abstract":"Interventional diagnostic and therapeutic technologies have gained considerable popularity in many surgical specialties – cardiology, vascular surgery, neurosurgery, oncology, and in orthopedics and traumatology. But unlike other specialties, ultrasound became the driving force behind the development and implementation of interventional technologies in the treatment of diseases of the musculoskeletal system. In recent years, ultrasound-guided injections have gained significant popularity, as they have given an advantage in accuracy compared to injections without such navigation. The purpose of our study was the development of ultrasound navigation accesses to the hip and knee joints for the interventional application of regenerative technologies in their pathology. The material for the study was the results of ultrasound examination of the hip and knee joints of 486 patients with diseases and injuries of the hip and knee, who were treated in the scientific and practical department of tissue and cell therapy of the State Institute of Traumatology and Orthopedics of the National Academy of Medical Sciences of Ukraine in the period from 2016 to 2023. The results. The following accesses to the knee joint under ultrasound navigation have been developed: suprapatellar longitudinal access for injections into the quadriceps tendon and patellofemoral joint, suprapatellar longitudinal access with knee bending for injections into the upper turn of the knee joint, infrapatellar longitudinal access for injections into the patellar ligament and deep infrapatellar bursa, infrapatellar transverse access for injections into Hoffa’s fat pad, lateral longitudinal access with knee bending for injections into the lateral meniscus, medial longitudinal access with bending in the knee for injections in the medial meniscus, medial transverse access for injections in the medial part of the joint space, lateral transverse access with bending in the knee joint for injections in the lateral part of the joint space, lateral longitudinal access for performing injections in the collateral fibular ligament, medial longitudinal access for performing injections in the collateral tibial ligament, infrapatellar diagonal access for performing injections in the “crow’s foot” area of the knee joint, infrapatellar medial longitudinal access for performing other injection into the medial meniscus and joint capsule, lateral longitudinal access for injections into the tendons of the biceps femoris and hamstrings. The following accesses have been developed for the hip joint: anterior longitudinal access for performing injections in the subcapsular-cervical space, anterior diagonal access for performing injections in the acetabular labrum, capsule-ligament apparatus of the hip and tendon of the rectus femoris muscle, lateral longitudinal access for performing injections in the paratrochanteric region. Conclusions. 13 ultrasonic navigation accesses have been developed for the administration o","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"76 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141032447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesenchymal stem cell therapy modulates macrophage dynamics in ARDS-associated liver injury in rats","authors":"Olesya Redko, A. Dovgalyuk, Solomiia Kramar, N. Ohinska, Zoia Nebesna, Mykhaylo Korda","doi":"10.22494/cot.v11i2.157","DOIUrl":"https://doi.org/10.22494/cot.v11i2.157","url":null,"abstract":"Acute Respiratory Distress Syndrome (ARDS) is a life-threatening pulmonary condition characterized by severe hypoxemia and respiratory failure. Beyond its devastating impact on the lungs, ARDS often triggers systemic responses affecting vital organs throughout the body. One such organ commonly affected is the liver, which experiences various degrees of injury during the course of ARDS. Pathophysiological changes in liver during ARDS, particularly polarization of Kupffer cells during the disease and its treatment, have drawn increasing attention. Purpose. To explore the macrophage transformation in liver injury associated with ARDS and investigate the potential of mesenchymal stem cell (MSC) therapy as a means to modulate macrophage responses and mitigate liver injury. Materials and methods. 72 mature male Wistar rats were randomly allocated to nine experimental groups as follows: the control group, groups assessed at 3 days, 7 days, and 28 days following intranasal LPS administration, groups that received 24 hours of LPS followed by 2 days of human umbilical cord-derived mesenchymal stem cells (hUC-MSCs), groups exposed to 4 days of LPS and 3 days of hUC-MSCs, groups subjected to 14 days of LPS and 14 days of hUC-MSCs, groups treated with LPS 21 days and 7 days with hUC-MSCs injection, and a control group assessed 3 days after hUC-MSCs injection. For the administration of hUC-MSCs, intraperitoneal injections were performed at a dose of 1∙106 cells/kg body weight. Immunohistochemistry was employed to analyze macrophage subpopulations in liver tissues. Animal experiments adhered to ethical guidelines. Results. Early ARDS stages showed increased M1 macrophages, indicating pro-inflammatory responses, while later stages showed M2 macrophage activation, suggestive of anti-inflammatory and tissue repair roles. MSC administration facilitated the transition from M1 to M2 macrophages, promoting an anti-inflammatory milieu. Conclusions. MSCs demonstrate the potential to modulate macrophage polarization into M2 anti-inflammatory phenotype. Such findings reflect one of the mechanisms of MSC action which holds practical significance for future ARDS therapies, aiming to mitigate excessive inflammation and enhance tissue repair.","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"145 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139196959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effects of human umbilical cord-derived multipotent mesenchymal stromal cells transplantation in mice of different strains with an experimental model of parkinsonism","authors":"Iryna Labunets, Tetyana Panteleymonova, Vitalii Kyryk, Olena Toporova, Zoya Litoschenko","doi":"10.22494/cot.v11i2.155","DOIUrl":"https://doi.org/10.22494/cot.v11i2.155","url":null,"abstract":"One of the promising directions in cell therapy for Parkinson's disease or parkinsonism is the transplantation of multipotent mesenchymal stromal cells from various sources, including human umbilical cord (hUC-MMSCs), the effectiveness of which may depend on the recipient's genotype. Objective. To compare the impact of transplanted MMSC-P on behavior, T-lymphocytes, and macrophages in the brain and lymphoid organs of mice from different lines with a toxic model of parkinsonism. Materials and methods. Adult (6-7 months old) male mice of FVB/N (genotype H-2q) and 129/Sv (genotype H-2b) strains were administered the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) at a dose of 30 mg/kg (control group), and after 7 days, hUC-MMSCs (500,000 cells) were transplanted into the tail vein. Behavioral reactions were assessed in open field, rigidity, and rotarod tests. The relative content of T-lymphocytes and activated macrophages in the brain was measured by flow cytometry, and the mass of lymphoid organs was determined. Results. Under the influence of MPTP, the number of rearings, \"sniffs into the nest,\" body length, and step length decreased, the number of boluses increased in FVB/N and 129/Sv mice, and the number of squares crossed in the open field test decreased in 129/Sv mice. In the brain of mice from both lines, the content of activated macrophages increased, and in FVB/N mice, the number of T-lymphocytes also increased. The thymus mass decreased in mice from both lines, while the spleen mass decreased only in 129/Sv mice. The transplantation of hUC-MMSCs improved predominantly motor activity in FVB/N mice, while in 129/Sv mice, emotional activity improved, and manifestations of rigidity decreased in mice from both lines. The content of T-lymphocytes and activated macrophages in the brain of mice from both lines, as well as the thymus mass, corresponded to the values of intact animals. MMSC transplantation promoted the survival of FVB/N and 129/Sv mice with the MPTP-induced parkinsonism model. Conclusions. The manifestations of behavioral disorders, changes in the content of T-lymphocytes and activated macrophages in the brain, and the mass of lymphoid organs in mice with the MPTP-induced parkinsonism model, as well as the positive effects of transplanted hUC-MMSCs in these animals, largely depend on their genotype according to the H-2 system (analogous to the HLA system in humans). The results may provide a basis for developing personalized cell therapy for this pathology using multipotent mesenchymal stromal cells.","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"41 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136228001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sleep disorders and changes in melatonin concentrations in pregnant women with preeclampsia","authors":"Ruslan Savka, Andrii Berbets","doi":"10.22494/cot.v11i2.158","DOIUrl":"https://doi.org/10.22494/cot.v11i2.158","url":null,"abstract":"Melatonin plays a significant role in the development of normal pregnancy, in particular, it contributes to the successful implantation of the fertilized egg, affects the act of childbirth, is actively produced by the trophoblast and placenta, reduces oxidative stress, in particular, with preeclampsia. In addition, melatonin is one of the essential hormones in the protection of the endothelium and stem cells from the oxidant stress. Objective – to study the mechanisms of development, terms of manifestation, and types of sleep disorders, as well as changes in the concentrations of melatonin in the blood of pregnant women with preeclampsia. Material and methods. 50 pregnant women at a mean age of 29.1±3.4 years who had preeclampsia in the 3rd pregnancy trimester were examined (experimental group). All women in the research group had a gestation term of 30-32 weeks of pregnancy. The control group consisted of 33 women with a mean age of 31.2±6.6 years who had an uncomplicated pregnancy. The presence of sleep disorders was established using a questionnaire: pregnant women were asked about the term of pregnancy in which complaints of sleep disorders appeared, the nature of sleep disorders, the frequency of episodes of sleep disorders (how many times a week such a condition was noted), etc. The concentration of melatonin in the venous blood of the examined pregnant women was also determined, for which IBL melatonin ELISA diagnostic kits manufactured by IBL, Germany were used. Blood was taken at 9:00 a.m., on an empty stomach, and all patients were analyzed at the same time of a day. Results and their discussion. The study showed that sleep disorders in pregnant women with pre-eclampsia, which complicates the pregnancy in the 3rd trimester, occurred earlier, compared to women with an uncomplicated course of pregnancy: pregnant women with pre-eclampsia were more likely to notice worsening of sleep, starting from 22-30 weeks of pregnancy (in 26.0 % of cases), while in pregnant women with a physiological course of gestation, similar complaints appeared mainly after 30 weeks. In the third trimester of pregnancy women with preeclampsia were more likely to wake up 2 or more times per night (in 68.0 % of cases) compared to controls (in 23.3 % of cases, p < 0.001) and 3 or more times per night per week (in 54.0 % of cases, in controls – in 16.7 % of cases, p < 0.001), which may be a consequence of a disorder of the function of the pineal gland. Women with preeclampsia were more likely (56.0 % vs. 13.3 % in the control group, p < 0.01) to use gadgets (electronic devices, mainly smartphones) for more than 2 hours after 9:00 p.m., which also negatively affects the function of the pineal gland. In pregnant women whose pregnancy was complicated by preeclampsia in the 3rd trimester, a significant (1.78-fold) decrease in the level of melatonin in venous blood taken at 9 a.m. was observed, compared to women with an uncomplicated pregnancy (p = 0.029). Conclusions. Slee","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"51 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136227830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The efficacy of two models – MEAF and pMELD, as indicators of lethal outcome in early postoperative period after liver transplantation in children","authors":"Andrey Goncharov, Yordanka Uzunova","doi":"10.22494/cot.v11i2.153","DOIUrl":"https://doi.org/10.22494/cot.v11i2.153","url":null,"abstract":"The current study is aiming to prove the effectiveness and compare “Model for Early Allograft Function” (MEAF) and “postoperative Model for End-stage Liver Disease” (pMELD) in the early posttransplant setting in children. Methods. We did a retrospective study on 43 liver transplant patients for a 17-year period between the ages 0 – 18 years. MEAF and pMELD were calculated on the third and fifth postoperative day, respectively, and a Cox regression analysis was performed to find the correlation between them and mortality in the early postoperative period (EPOP). Results. Both scores proved to be statistically significant and applicable in EPOP. MEAF had P value of 0.0003 and a hazard ratio of 10.99, while pMELD demonstrated P value of 0.003 and a hazard ratio of 1.24. Conclusions. Both MEAF and pMELD can be used for the diagnostics of early allograft dysfunction and predicting the outcome of the transplantation, with MEAF having the upper hand.","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"49 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136227664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The improvement of endothelial function by inhibition of platelet activity using acetylsalicylic acid in patients with arterial hypertension","authors":"Tatyana Talaieva, Larysa Mishchenko, Iryna Tretyak, Olena Matova, Natalia Vasilinchuk, Larysa Vavilova","doi":"10.22494/cot.v11i2.154","DOIUrl":"https://doi.org/10.22494/cot.v11i2.154","url":null,"abstract":"In accordance with modern ideas about the pathogenesis of thrombotic complications of cardiovascular diseases (myocardial infarction, stroke), it should be noted that platelets and platelet humoral factors play a key role in the development of thrombosis. Activated platelets are able to activate both endotheliocytes and pro-inflammatory cells - monocytes/macrophages, which take a direct part in the formation and progression of atherosclerotic plaque. The purpose of the study is to investigate the potential improvement of endothelial function through the inhibition of platelet activity using acetylsalicylic acid in patients with arterial hypertension and established atherosclerotic cardiovascular diseases. Materials and methods. We enrolled 41 patients with arterial hypertension and established atherosclerotic cardiovascular diseases in our study. The participants were divided into two groups. Group 1 comprised 20 patients who were already taking acetylsalicylic acid (ASA) before the study, while Group 2 consisted of 21 patients who had not received ASA before participating. During the 6-month study period, patients from both groups received ASA (75 mg once a day) as part of their basic therapy, which included antihypertensive and statin therapy. Platelet activity was assessed in all patients before the study and at the final stage by determining the expression of glycoproteins GPIIb-IIIa and P-selectin on their surface. Additionally, the content of endothelial progenitor cells (phenotype CD45-CD31+CD133+) and desquamated endothelial cells (phenotype CD45-CD31+CD133-) in the blood was analyzed using flow cytometry. ELISA was employed to measure the content of C-reactive protein, cytokines TNF-α and IL-10, as well as asymmetric dimethylarginine (ADMA) in the blood. Finally, all patients underwent a test with flow-dependent vasodilation of the brachial artery. Results. In patients who did not receive ASA before the study, there was a higher level of platelet activity in peripheral blood flow, along with signs of more pronounced endothelial dysfunction compared to those who received it. After 6 months of taking ASA alongside standard antihypertensive therapy, the activation level of circulating blood platelets decreased in both groups. Specifically, in patients of group 1, the expression level of CD41 (GPIIb) decreased by 31.8 % (p < 0.01), and CD61 (GPIIIa) decreased by 15.2 % (p < 0.01). In group 2 patients, the suppression of platelet activity was even more pronounced, with the expression level of CD41 (GPIIb) decreasing by 55.2 % (p < 0.001), and CD61 (GPIIIa) decreasing by 27.5 % (p < 0.05). Furthermore, in patients of group 1, the percentage of platelets carrying P-selectin on the surface decreased by 78.1 % (p < 0.01). In group 2, the number of such platelets also significantly decreased by 42.5 % (p < 0.05). The number of progenitor cells of endothelial cells in the circulating blood increased significantly in both groups, showing a 3-fold in","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"42 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136228355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regenerative potential and clinical application of mesenchymal stem cell-derived exosomes (review)","authors":"Inna Gordiienko, Maryna Shamshur, Svitlana Novikova, Igor Zlatskiy, Alona Zlatska","doi":"10.22494/cot.v11i2.152","DOIUrl":"https://doi.org/10.22494/cot.v11i2.152","url":null,"abstract":"For more than 50 years, mesenchymal stem cells have been extensively studied as a therapeutic agent in the treatment of various diseases. It became clear that MSC-derived secretome including the growth factors, cytokines, microvesicles and exosomes are the major drivers in the realization of beneficial effect of MSC-based therapy. Exosomes play an important role in the organism homeostasis and diseases development working as a vehicle for the transfer of the signaling and regulatory molecules between cells. Exosomes size, stability, cargo content that reflect the physiological state of parent cells make them an attractive new tool for regenerative medicine. Cell-free therapy or cell therapy 2.0 are being developed. Here, we review the molecular profile of exosomes derived from different MSC sources and their biological properties, the results of clinical application of MSC-derived exosomes in the of treatment COVID-19, alopecia, skin aging and osteoarthritis, discuss what issues exist in the development and application of a new biomedical product. The purpose of this study was to analyze the literature data on the regenerative potential and clinical application of exosomes derived from mesenchymal stem cells. Materials and methods. An analytical review of literature data was conducted using the information analysis of Medline (PubMed), Web of Science and Scopus databases, Google Scholar and the Cochrane Central Register of Controlled Trials (CENTRAL) and other sources until 2022 inclusive using the keywords: «exosomes», «mesenchymal stem cells», «cell-free therapy», «secretome», «miRNA» Results. In this review, we consider the molecular profile of exosomes derived from different MSC sources and their biological properties, the results of clinical application of MSC-derived exosomes in the treatment of COVID-19, alopecia, skin aging and osteoarthritis, discuss what issues exist in the development and application of a new biomedical product. Conclusion. The study, research and development of biotechnological products based on exosomes from different stem cell types are new stages in the development of regenerative medicine. Understanding the unique biological properties of MSCs derived from various tissue sources is one of the keys to develop effective exosomes-based biotechnological products to address specific medical goals.","PeriodicalId":36461,"journal":{"name":"Cell and Organ Transplantology","volume":"51 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136227831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}