Allogenic adipose derived stem cells transplantation improved sciatic nerve regeneration in rats: Autologous nerve graft model

© 2018 Masgutov, Masgutova, Mukhametova, Garanina, Arkhipova, Zakirova, Mukhamedshina, Margarita, Gilazieva, Syromiatnikova, Mullakhmetova, Kadyrova, Nigmetzyanova, Mikhail, Igor, Yagudin and Rizvanov. We examined the effect of transplantation of allogenic adipose-derived stem cells (ADSCs) with properties of mesenchymal stem cells (MSCs) on posttraumatic sciatic nerve regeneration in rats. We suggested an approach to rat sciatic nerve reconstruction using the nerve from the other leg as a graft. The comparison was that of a critical 10 mm nerve defect repaired by means of autologous nerve grafting versus an identical lesion on the contralateral side. In this experimental model, the same animal acts simultaneously as a test model, and control. Regeneration of the left nerve was enhanced by the use of ADSCs, whereas the right nerve healed under natural conditions. Thus the effects of individual differences were excluded and a result closer to clinical practice obtained. We observed significant destructive changes in the sciatic nerve tissue after surgery which resulted in the formation of combined contractures in knee and ankle joints of both limbs and neurotrophic ulcers only on the right limb. The stimulation of regeneration by ADSCs increased the survival of spinal L5 ganglia neurons by 26.4%, improved sciatic nerve vascularization by 35.68% and increased the number of myelin fibers in the distal nerve by 41.87%. Moreover, we have demonstrated that S100, PMP2, and PMP22 gene expression levels are suppressed in response to trauma as compared to intact animals. We have shown that ADSC-based therapy contributes to significant improvement in the regeneration

Electrophysiological, morphological, and ultrastructural features of the injured spinal cord tissue after transplantation of human umbilical cord blood mononuclear cells genetically modified with the VEGF and GDNF genes

© 2017 Y. O. Mukhamedshina et al.In this study, we examined the efficacy of human umbilical cord blood mononuclear cells (hUCB-MCs), genetically modified with the VEGF and GDNF genes using adenoviral vectors, on posttraumatic regeneration after transplantation into the site of spinal cord injury (SCI) in rats. Thirty days after SCI, followed by transplantation of nontransduced hUCB-MCs, we observed an improvement in H (latency period, LP) and M(Amax) waves, compared to the group without therapy after SCI. For genetically modified hUCB-MCs, there was improvement in Amax of M wave and LP of both the M and H waves. The ratio between Amax of the H and M waves (Hmax/Mmax) demonstrated that transplantation into the area of SCI of genetically modified hUCB-MCs was more effective than nontransduced hUCB-MCs. Spared tissue and myelinated fibers were increased at day 30 after SCI and transplantation of hUCB-MCs in the lateral and ventral funiculi 2.5 mm from the lesion epicenter. Transplantation of hUCB-MCs genetically modified with the VEGF and GNDF genes significantly increased the number of spared myelinated fibers (22-fold, P>0.01) in the main corticospinal tract compared to the nontransduced ones. HNA+ cells with the morphology of phagocytes and microglia-like cells were found as compact clusters or cell bridges within the traumatic cavities that were lined by GFAP+ host astrocytes. Our results show that hUCB-MCs transplanted into the site of SCI improved regeneration and that hUCB-MCs genetically modified with the VEGF and GNDF genes were more effective than nontransduced hUCB-MCs

Sravnitel’nyi analiz soderzhaniya dubil’nykh veshchestv v kornevishchakh krovokhlebki lekarstvennoi (Sanguisorba officinalis L.) (Comparative Analysis of Tannins in the Rhizomes of Great Burnet (Sanguisorba officinalis L.)

Quantitative analysis of the content of tannins in the rhizomes of great burnet (Sanguisorba offici-nalis L.) was performed using Leventhal’s permanganometric method, its Kursanov's modification, and spectrophotometry. Advantages and disadvantages of the methods used were discussed to determine the quantitative content of tannins in the active parts of different plants. New locations of S. officinalis populations in various regions of the Republic of Tatarstan were detected. The discovered populations differ in terms of habitat conditions. It was revealed that S. officinalis at the territory of the Republic of Tatarstan can be both light and shade demanding. The quantitative characteristics of tannins in the active parts of S. officinalis from two populations were investigated. The methods used to determine the content of tannins gave different results. It was found that the populations of S. officinalis differ in time when they reach the maximum content of tannins, which depends on the phase of vegetation and the dynamics of accumulation of tannins

Effect of Cisplatin on Ultrastructure and Viability of Adipose-Derived Mesenchymal Stem Cells

© 2016, Springer Science+Business Media New York.Mesenchymal stem cells (MSCs) can be used to develop new methods for cancer therapy because they have tropism for tumor niche. Currently, in clinical practice, the multipotent MSCs from adipose tissue (hADSCs) are considered to be promising cell type for therapy of various human diseases. These cells can serve as vectors to deliver therapeutic molecules into the tumor microenvironment. A new direction in the development of cancer cell therapy is to prime culture of MSCs with chemotherapeutic drugs. In such preparations, MSCs can provide targeted delivery of the drug not only into tumors but also to distant metastasis and premetastatic niches. However, the effect of these drugs on the MSCs biological properties is poorly understood. In cancer chemotherapy, cisplatin is one of effective cytotoxic drugs, which is used to treat various types of tumors. In the present study, we investigated the effects of the cisplatin chemotherapeutic drug on hADSCs and showed that concentration of 2.5 and 5 μg/ml of cisplatin has no effect on the viability, morphology, and ultrastructure of cells

Effect of Cisplatin on Ultrastructure and Viability of Adipose-Derived Mesenchymal Stem Cells

© 2016, Springer Science+Business Media New York.Mesenchymal stem cells (MSCs) can be used to develop new methods for cancer therapy because they have tropism for tumor niche. Currently, in clinical practice, the multipotent MSCs from adipose tissue (hADSCs) are considered to be promising cell type for therapy of various human diseases. These cells can serve as vectors to deliver therapeutic molecules into the tumor microenvironment. A new direction in the development of cancer cell therapy is to prime culture of MSCs with chemotherapeutic drugs. In such preparations, MSCs can provide targeted delivery of the drug not only into tumors but also to distant metastasis and premetastatic niches. However, the effect of these drugs on the MSCs biological properties is poorly understood. In cancer chemotherapy, cisplatin is one of effective cytotoxic drugs, which is used to treat various types of tumors. In the present study, we investigated the effects of the cisplatin chemotherapeutic drug on hADSCs and showed that concentration of 2.5 and 5 μg/ml of cisplatin has no effect on the viability, morphology, and ultrastructure of cells

Promising applications of tumor spheroids and organoids for personalized medicine

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. One of the promising directions in personalized medicine is the use of three-dimensional (3D) tumor models such as spheroids and organoids. Spheroids and organoids are three-dimensional cultures of tumor cells that can be obtained from patient tissue and, using high-throughput personalized medicine methods, provide a suitable therapy for that patient. These 3D models can be obtained from most types of tumors, which provides opportunities for the creation of biobanks with appropriate patient materials that can be used to screen drugs and facilitate the development of therapeutic agents. It should be noted that the use of spheroids and organoids would expand the understanding of tumor biology and its microenvironment, help develop new in vitro platforms for drug testing and create new therapeutic strategies. In this review, we discuss 3D tumor spheroid and organoid models, their advantages and disadvantages, and evaluate their promising use in personalized medicine

La Patrie : journal quotidien, politique, commercial et littéraire

10 février 18761876/02/10 (A36)

Allogenic adipose derived stem cells transplantation improved sciatic nerve regeneration in rats: Autologous nerve graft model

© 2018 Masgutov, Masgutova, Mukhametova, Garanina, Arkhipova, Zakirova, Mukhamedshina, Margarita, Gilazieva, Syromiatnikova, Mullakhmetova, Kadyrova, Nigmetzyanova, Mikhail, Igor, Yagudin and Rizvanov. We examined the effect of transplantation of allogenic adipose-derived stem cells (ADSCs) with properties of mesenchymal stem cells (MSCs) on posttraumatic sciatic nerve regeneration in rats. We suggested an approach to rat sciatic nerve reconstruction using the nerve from the other leg as a graft. The comparison was that of a critical 10 mm nerve defect repaired by means of autologous nerve grafting versus an identical lesion on the contralateral side. In this experimental model, the same animal acts simultaneously as a test model, and control. Regeneration of the left nerve was enhanced by the use of ADSCs, whereas the right nerve healed under natural conditions. Thus the effects of individual differences were excluded and a result closer to clinical practice obtained. We observed significant destructive changes in the sciatic nerve tissue after surgery which resulted in the formation of combined contractures in knee and ankle joints of both limbs and neurotrophic ulcers only on the right limb. The stimulation of regeneration by ADSCs increased the survival of spinal L5 ganglia neurons by 26.4%, improved sciatic nerve vascularization by 35.68% and increased the number of myelin fibers in the distal nerve by 41.87%. Moreover, we have demonstrated that S100, PMP2, and PMP22 gene expression levels are suppressed in response to trauma as compared to intact animals. We have shown that ADSC-based therapy contributes to significant improvement in the regeneration

Electrophysiological, morphological, and ultrastructural features of the injured spinal cord tissue after transplantation of human umbilical cord blood mononuclear cells genetically modified with the VEGF and GDNF genes

© 2017 Y. O. Mukhamedshina et al.In this study, we examined the efficacy of human umbilical cord blood mononuclear cells (hUCB-MCs), genetically modified with the VEGF and GDNF genes using adenoviral vectors, on posttraumatic regeneration after transplantation into the site of spinal cord injury (SCI) in rats. Thirty days after SCI, followed by transplantation of nontransduced hUCB-MCs, we observed an improvement in H (latency period, LP) and M(Amax) waves, compared to the group without therapy after SCI. For genetically modified hUCB-MCs, there was improvement in Amax of M wave and LP of both the M and H waves. The ratio between Amax of the H and M waves (Hmax/Mmax) demonstrated that transplantation into the area of SCI of genetically modified hUCB-MCs was more effective than nontransduced hUCB-MCs. Spared tissue and myelinated fibers were increased at day 30 after SCI and transplantation of hUCB-MCs in the lateral and ventral funiculi 2.5 mm from the lesion epicenter. Transplantation of hUCB-MCs genetically modified with the VEGF and GNDF genes significantly increased the number of spared myelinated fibers (22-fold, P>0.01) in the main corticospinal tract compared to the nontransduced ones. HNA+ cells with the morphology of phagocytes and microglia-like cells were found as compact clusters or cell bridges within the traumatic cavities that were lined by GFAP+ host astrocytes. Our results show that hUCB-MCs transplanted into the site of SCI improved regeneration and that hUCB-MCs genetically modified with the VEGF and GNDF genes were more effective than nontransduced hUCB-MCs

Electrophysiological, morphological, and ultrastructural features of the injured spinal cord tissue after transplantation of human umbilical cord blood mononuclear cells genetically modified with the VEGF and GDNF genes

© 2017 Y. O. Mukhamedshina et al.In this study, we examined the efficacy of human umbilical cord blood mononuclear cells (hUCB-MCs), genetically modified with the VEGF and GDNF genes using adenoviral vectors, on posttraumatic regeneration after transplantation into the site of spinal cord injury (SCI) in rats. Thirty days after SCI, followed by transplantation of nontransduced hUCB-MCs, we observed an improvement in H (latency period, LP) and M(Amax) waves, compared to the group without therapy after SCI. For genetically modified hUCB-MCs, there was improvement in Amax of M wave and LP of both the M and H waves. The ratio between Amax of the H and M waves (Hmax/Mmax) demonstrated that transplantation into the area of SCI of genetically modified hUCB-MCs was more effective than nontransduced hUCB-MCs. Spared tissue and myelinated fibers were increased at day 30 after SCI and transplantation of hUCB-MCs in the lateral and ventral funiculi 2.5 mm from the lesion epicenter. Transplantation of hUCB-MCs genetically modified with the VEGF and GNDF genes significantly increased the number of spared myelinated fibers (22-fold, P>0.01) in the main corticospinal tract compared to the nontransduced ones. HNA+ cells with the morphology of phagocytes and microglia-like cells were found as compact clusters or cell bridges within the traumatic cavities that were lined by GFAP+ host astrocytes. Our results show that hUCB-MCs transplanted into the site of SCI improved regeneration and that hUCB-MCs genetically modified with the VEGF and GNDF genes were more effective than nontransduced hUCB-MCs