RESUMO
We studied disorders in ciliary body microcirculation in experimental chronic glomerulonephritis with tubulointerstitial nephritis and evaluated the hemodynamic effects of low-frequency pulsed electromagnetic field in this pathology. Laser Doppler flowmetry demonstrated vasospasm with reduced nutrient blood fl ow in the ciliary body of animals with experimental chronic glomerulonephritis with tubulointerstitial nephritis. The exposure to low-frequency pulsed electromagnetic field using developed technology will lead to significant reduction of the vascular tone and improve arterial blood supply to the microcirculatory bed.
Assuntos
Corpo Ciliar/efeitos da radiação , Glomerulonefrite/fisiopatologia , Microcirculação/efeitos da radiação , Músculo Liso Vascular/efeitos da radiação , Nefrite Intersticial/fisiopatologia , Espasmo/radioterapia , Animais , Chinchila , Corpo Ciliar/irrigação sanguínea , Corpo Ciliar/fisiopatologia , Radiação Eletromagnética , Fluxometria por Laser-Doppler , Masculino , Músculo Liso Vascular/fisiopatologia , Espasmo/fisiopatologiaRESUMO
Ultrastructural changes in the retina under conditions of experimental hypoestrogenia were studied. Hypoestrogenic status was induced in female rabbits by extirpation of both uterine horns with appendages. Clinical status of the eyes was evaluated after 9 months by ophthalmoscopy and optical coherent tomography. Changes in the retinal layers under conditions of experimental estrogenia were detected: thickened retinal pigmented epithelium layer, a lesser layer of nerve fibrils, and thinning of the choriocapillary layer. A relationship between thinning of the choroid and thickening of the pigmented epithelium of the retina was detected.
Assuntos
Corioide/patologia , Estradiol/deficiência , Nervo Óptico/patologia , Progesterona/deficiência , Epitélio Pigmentado da Retina/patologia , Animais , Corioide/metabolismo , Estradiol/sangue , Feminino , Histerectomia , Oftalmoscopia , Nervo Óptico/metabolismo , Progesterona/sangue , Coelhos , Epitélio Pigmentado da Retina/metabolismo , Tomografia de Coerência ÓpticaRESUMO
The objective of the present study was to analyse anatomical features of the middle ear in the premature infants of different gestational age. Materials from 100 still-born and live-born babies (200 temporal bones) were available for the investigation. The study has revealed a number of distinctive clinical and morphological peculiarities in the structure of tympanic membranes in both the prematurely born infants depending on the gestational age and in the full-term babies. The fluid from the tympanic cavity was found to contain human beta-chorionic gonadotropin.
Assuntos
Desenvolvimento Infantil/fisiologia , Gonadotropina Coriônica Humana Subunidade beta/metabolismo , Orelha Média , Idade Gestacional , Osso Temporal , Anatomia Regional/métodos , Orelha Média/crescimento & desenvolvimento , Orelha Média/metabolismo , Orelha Média/patologia , Feminino , Humanos , Recém-Nascido , Recém-Nascido Prematuro , Líquidos Labirínticos/metabolismo , Masculino , Osso Temporal/crescimento & desenvolvimento , Osso Temporal/patologia , Membrana Timpânica/crescimento & desenvolvimento , Membrana Timpânica/patologiaRESUMO
One of the clinical and experimental investigations performed in the urological clinic of the Moscow Medical University and Research Institute of Urology aimed at elucidation of Ho-YAG-laser potential in endoscopic lithotripsy (EL). Russian Ho-YAG laser surgical units CTH-10 and LLT-3 with wave length 2.09 mu were employed. The studies showed that the developed laser units satisfied relevant medical and technical requirements. Low depth of laser impulse penetration (0.4 mm) obtained at EL warrants safety of the adjacent tissues which is essential in crushing fixed ureteroliths in the presence of severe inflammation in the ureteral wall. The conclusion is made that Ho-YAG laser EL is an effective treatment of ureteroliths. Further tests for EL efficacy in affections of the upper urinary tracts are advocated to define a proper place of EL in endoscopic urology.
Assuntos
Litotripsia a Laser/métodos , Cálculos Ureterais/terapia , Estudos de Avaliação como Assunto , Humanos , Técnicas In Vitro , Litotripsia a Laser/instrumentação , Espectrofotometria Infravermelho , Resultado do Tratamento , Ureter/patologia , Ureter/efeitos da radiação , Cálculos Ureterais/química , Cálculos Ureterais/patologia , UreteroscopiaRESUMO
Morphological and biomechanical features of the sclera after collagen plasty were studied in 90 eyes of 45 chinchilla rabbits. A reduction of the viscous elastic properties of the sclera 1 month after surgery was revealed, not described previously. The data on the changed mechanical characteristics of the sclera following collagen plasty are confirmed by the results of optic and electron microscopy; these data permit us to propose that the sclera in the immediate postoperative period (less than 1 month after the operation) represents a somewhat chaotic structure at the stage of active restructuring. Rational postoperative management of patients after collagen plasty is recommended.
Assuntos
Colágeno , Miopia/cirurgia , Escleroplastia/métodos , Animais , Estudos de Avaliação como Assunto , Seguimentos , Microscopia , Microscopia Eletrônica , Complicações Pós-Operatórias , Coelhos , Fatores de TempoAssuntos
Terapia a Laser , Magnetismo , Ferimentos e Lesões/terapia , Animais , Estudos de Avaliação como Assunto , Traumatismos dos Dedos/terapia , Fraturas Expostas/terapia , Cobaias , Humanos , Masculino , Úlcera Cutânea/terapia , Cicatrização/efeitos da radiação , Infecção dos Ferimentos/terapiaRESUMO
It has been shown in rat experiments that low-energy laser (transcutaneous action on liver tissue) increases the functional activity of intact hepatocytes, activating the regeneration of injured parenchyma.