RESUMO
The results of experimental development of the use of Quercitrol, the inhibitor of leukotrienes, and helium-neon laser acupuncture for the treatment of antiinflammatory operative neuroma decelerating the process of neural tissue regeneration are presented. The positive data of the experiments have been confirmed in the clinic.
Assuntos
Terapia a Laser , Nervo Mediano/lesões , Nervo Mediano/cirurgia , Neuroma/terapia , Neoplasias do Sistema Nervoso Periférico/terapia , Complicações Pós-Operatórias/terapia , Quercetina/uso terapêutico , Nervo Ulnar/lesões , Nervo Ulnar/cirurgia , Doença Aguda , Adolescente , Adulto , Animais , Criança , Terapia Combinada , Humanos , Pessoa de Meia-Idade , Regeneração Nervosa/efeitos dos fármacos , Cuidados Pós-Operatórios , Quercetina/farmacologia , Distribuição Aleatória , RatosRESUMO
Histologically and morphometrically structural transformations in the popliteal and iliac medial lymph nodes have been studied in dogs at plasty of their ischiatic nerve by means of a cryopreserved allotransplant. In one week after the operation in the popliteal and in one month in the iliac nodes appear and then develop further certain reactions in B-dependent areas. In 4-12 weeks after the nerve transplantation certain statistically significant changes are noted in the thymus-dependent zone of the iliac medial lymph nodes. During first two weeks from the beginning of the experiment increase in the relative area of the popliteal lymph nodes sinuses is observed. The transformations described are interpreted as a response of the immune system to the nerve cut, and as a result of it--denervation of the crural tissues, disturbance of their nervous trophic, as well as--to transplantation of the allogeneic nervous trunk. The data obtained are in accordance with results of immunological investigations.
Assuntos
Criopreservação/métodos , Linfonodos/patologia , Linfócitos/patologia , Nervo Isquiático/lesões , Preservação de Tecido/métodos , Animais , Contagem de Células , Cães , Ílio , Joelho , Transferência de Nervo/métodos , Nervo Isquiático/cirurgia , Fatores de TempoRESUMO
A correlation between electrophysiological and morphological indices during reinnervation of the gastrocnemius muscle in the experimental alloneuroplastics of the sciatic nerve defect by the cryopreserved graft was determined. Data obtained show that the alloneuroplastics can provide axon regeneration and restoration of the operated limb function.
Assuntos
Músculos/inervação , Nervo Isquiático/fisiologia , Animais , Criopreservação , Cães , Eletrofisiologia , Músculos/fisiologia , Regeneração Nervosa/fisiologia , Período Pós-Operatório , Nervo Isquiático/transplante , Fatores de Tempo , Transplante HomólogoRESUMO
Various injuries to the sciatic nerve were modelled in experiments on 60 rats and 27 dogs to study the effect of paraaminomethylbenzoic acid on its regeneration; the efficacy of amben was compared with that of other agents used widely for the treatment of injuries to nerves. It was found that amben acts on the connective tissue of the neural scar and creates favourable conditions for growth of axons from the central to the peripheral stump of the injured nerve and accelerated their maturation.
Assuntos
Regeneração Nervosa/efeitos dos fármacos , Nervo Isquiático/fisiologia , para-Aminobenzoatos , Ácido 4-Aminobenzoico/farmacologia , Potenciais de Ação/efeitos dos fármacos , Potenciais de Ação/fisiologia , Animais , Modelos Animais de Doenças , Cães , Microcirurgia , Fibras Nervosas/efeitos dos fármacos , Fibras Nervosas/fisiologia , Ratos , Nervo Isquiático/efeitos dos fármacos , Nervo Isquiático/lesões , Fatores de TempoRESUMO
The authors have analysed the results of surgical treatment of 63 patients with consequences of traumatic injuries of the nerves of the lower extremities. Characteristic peculiarities of the injuries of the nerves of the lower extremities are noted. The possibilities of reconstructive microsurgery in the treatment of severe traumatic lesions in this contingent of the patients are demonstrated.
Assuntos
Traumatismos da Perna/cirurgia , Perna (Membro)/inervação , Traumatismos dos Nervos Periféricos , Adolescente , Adulto , Criança , Nervo Femoral/lesões , Humanos , Microcirurgia , Pessoa de Meia-Idade , Nervos Periféricos/cirurgia , Nervo Fibular/lesões , Nervo Isquiático/lesões , Retalhos Cirúrgicos , Nervo Tibial/lesõesRESUMO
In the experiment, performed on dogs ultrastructure of the ischiatic nerve allograft, preserved in liquid nitrogen (-196 degrees) has been studied. In 7 days after the operation in the transplanted piece of the nerve trunk certain phenomena, similar to the Wallerian degeneration are noted, while viability of neurilemma cells is preserved. Processes of second degeneration are mainly completed by the end of the first month after the operation. During this time active regeneration of nervous fibers is noted; it is accompanied with neutralization of the graft. The latter is mostly expressed in 6 months after the operation. The dynamics studied on ultramicroscopic rearrangements of the cryopreserved graft proves the previously obtained data on possibility of its use in clinics for substitution of defects in peripheral nerves.
Assuntos
Nervo Isquiático/ultraestrutura , Preservação de Tecido/métodos , Animais , Cães , Congelamento , Microscopia Eletrônica , Regeneração Nervosa , Nervo Isquiático/fisiologia , Nervo Isquiático/transplante , Temperatura , Fatores de Tempo , Transplante Homólogo , Degeneração WallerianaRESUMO
It is shown in experiments on 36 dogs that two-stage microsurgical autoneuroplasty with subsequent administration of an inhibitor of proteolytic enzymes (aminocaproic acid), an antioxidant (tocopherol acetate) and heparin makes it possible to realize more fully the histoblastic potencies of tissues which are components of the injured nerve and the graft. This circumstance leads to the improvement of the morphofunctional results of sciatic nerve restoration after its experimental injury.
Assuntos
Aminocaproatos/uso terapêutico , Ácido Aminocaproico/uso terapêutico , Heparina/uso terapêutico , Microcirurgia/métodos , Nervos Periféricos/cirurgia , Vitamina E/análogos & derivados , alfa-Tocoferol/análogos & derivados , Animais , Terapia Combinada , Tecido Conjuntivo/efeitos dos fármacos , Cães , Avaliação Pré-Clínica de Medicamentos , Regeneração Nervosa/efeitos dos fármacos , Traumatismos dos Nervos Periféricos , Nervos Periféricos/efeitos dos fármacos , Técnicas de Sutura , Fatores de Tempo , Tocoferóis , Transplante Autólogo , Vitamina E/uso terapêuticoRESUMO
It was demonstrated in experiments on 24 dogs that microsurgical epineurectomy of a cryopreserved peripheral nerve improves the results of neuroplasty due to acceleration and increase of graft revascularization. From application of the developed method in 12 patients it was concluded that microsurgical alloneuroplasty with a cryopreserved graft may be the method of choice in cases in which autoplasty cannot be performed.
Assuntos
Nervos Periféricos/transplante , Adolescente , Adulto , Animais , Criança , Cães , Congelamento , Humanos , Microcirurgia , Pessoa de Meia-Idade , Regeneração Nervosa , Traumatismos dos Nervos Periféricos , Nervos Periféricos/irrigação sanguínea , Preservação de Tecido , CicatrizaçãoAssuntos
Nervos Periféricos/anatomia & histologia , Animais , Anuros , Humanos , Camundongos , Coelhos , RatosAssuntos
Músculos/transplante , Retalhos Cirúrgicos , Adolescente , Adulto , Feminino , Traumatismos da Mão/cirurgia , Humanos , Masculino , Microcirurgia/métodos , Pessoa de Meia-Idade , OmbroRESUMO
A correlation between morphological and electrophysiological indices in the experimental alloneuroplastic of the sciatic nerve defect by the cryopreserved graft was determined. Data obtained permit recommending alloneuroplastic by cryopreserved graft for treatment of the peripheral nerve damage.