Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 7 de 7
Filter
1.
Arq. bras. oftalmol ; 81(3): 226-231, May-June 2018. tab, graf
Article in English | LILACS | ID: biblio-950449

ABSTRACT

ABSTRACT Purpose: Nitrogen mustard (NM) is a devastating casualty agent in chemical warfare. There is no effective antidote to treat NM-induced ocular injury. We aimed to assess the effects of proanthocyanidin (PAC) and coenzyme Q10 (CoQ10) on NM-induced ocular injury. Methods: Eighteen male rats were divided into the following 4 groups: NM, NM + PAC, NM + CoQ10, and control. The 3 NM groups received a single dose of NM (0.02 mg/μL) on the right eye to induce ocular injury. The control group received saline only. Thirty minutes after the application of NM, the NM + PAC group received PAC (100 mg/kg) via gastric gavage, while the NM + CoQ10 group received CoQ10 (10 mg/kg) via intraperitoneal injection. PAC and CoQ10 were administered once a day for 5 consecutive days. The rats were then sacrificed. Macroscopic images of the eyes were examined and eye tissues were collected for histology. Results: The treatment groups were compared to the control group with regard to both corneal opacity and lid injury scores. The findings were not significantly different for both the NM + PAC and NM + CoQ10 groups. In both the NM + PAC and NM + CoQ10 groups, the histological changes seen in the NM group demonstrated improvement. Conclusions: Our results indicate that PAC and CoQ10 treatments have therapeutic effects on NM-induced ocular injury in a rat model. PAC and CoQ10 may be novel options in patients with NM-induced ocular injury.


RESUMO Objetivo: A mostarda de nitrogênio (MN) é um agente de guerra química devastador. Não existe um antídoto eficaz para tratar lesões oculares induzidas por MN. Nosso objetivo foi avaliar os efeitos da proantocianidina (PAC) e da coenzima Q10 (CoQ10) na lesão ocular induzida por MN. Métodos: Dezoito ratos machos foram divididos em 4 grupos: MN, MN + PAC, MN + CoQ10 e Controle. Três grupos receberam uma dose única de MN (0,02 mg/μL) destilada no olho direito para gerar lesão ocular. Os animais do grupo controle receberam apenas solução salina. Trinta minutos após a aplicação de MN nos animais, o grupo MN + PAC recebeu PAC (100 mg/kg) por gavagem gástrica, enquanto a CoQ10 (10 mg/kg) foi administrada ao grupo MN + CoQ10 por meio de injeção intraperitoneal. A administração de PAC e de CoQ10 foi realizada uma vez por dia, durante 5 dias consecutivos. Os ratos foram, então, sacrificados. Imagens macroscópicas dos olhos foram examinadas e tecidos oculares foram coletados para histologia. Resultados: Os grupos de tratamento foram comparados ao grupo de controle quanto à opacidade da córnea e quanto aos escores de lesão da cobertura da córnea. Os resultados foram insignificantes para ambos os grupos. Ambos, o grupo MN+PAC e o grupo MN+CoQ10, apresentaram melhoras das alterações histológicas observadas no grupo MN. Conclusões: Nossos resultados indicam que os tratamentos com PAC e com CoQ10 têm efeitos terapêuticos sobre lesões oculares induzidas por MN em um modelo em ratos. A proantocianidina e a CoQ10 podem ser uma nova opção nesses casos.


Subject(s)
Animals , Male , Rats , Burns, Chemical/drug therapy , Eye Injuries/drug therapy , Ubiquinone/analogs & derivatives , Proanthocyanidins/therapeutic use , Antioxidants/therapeutic use , Random Allocation , Chemical Warfare Agents , Eye Injuries/chemically induced , Ubiquinone/therapeutic use , Rats, Sprague-Dawley , Disease Models, Animal , Mechlorethamine
2.
Rev. chil. pediatr ; 83(6): 582-586, dic. 2012. ilus
Article in Spanish | LILACS | ID: lil-673073

ABSTRACT

Introducción: Aproximadamente un tercio de las cegueras infantiles son debidas a los traumatismos, siendo la principal causa de déficit visual y ceguera monocular en ninos. caso clínico: Se reporta el caso de un preescolar masculino de 2 años de edad quien presentó úlcera escleral en ojo izquierdo secundaria a quemadura química por pila de reloj cuyo motivo de consulta fue contacto con detergente, con cicatrización dificultosa debido a cuerpo extraño mineral retenido en fondo de saco conjuntival inferior durante aproximadamente un mes, contando desde el ingreso al área pediátrica. conclusión: Se reporta un caso inusual de úlcera escleral. Hasta el momento no se han reportado otros casos de úlcera escleral secundaria a quemadura química por pila de reloj y por objetos retenidos en fondo de saco conjuntival inferior, resaltando el manejo diagnóstico y la demora en la extracción del cuerpo extraño, representando una emergencia oftalmológica.


Introduction: Approximately one-third of childhood blindness is due to trauma, representing the leading cause of visual impairment and monocular blindness in children. case report: The patient is a 2 year old preschool boy, who presented scleral ulcer in his left eye secondary to chemical burn caused by watch battery. The reason for seeking medical care was difficult healing caused by a mineral foreign body retained in the lower conjunctival sac after the patient came in contact with detergent one month before the pediatric consultation. Discussion: An unusual case of scleral ulcer was reported. So far, no other similar cases have been reported. The diagnosis process and the delay for the removal of the foreign body are emphasized in this serious ophthalmologic emergency.


Subject(s)
Humans , Male , Child, Preschool , Eye Foreign Bodies/complications , Scleral Diseases/chemically induced , Eye Burns/chemically induced , Eye Burns/therapy , Burns, Chemical , Conjunctiva , Eye Injuries/chemically induced , Alkaline Batteries/adverse effects
3.
Journal of Korean Medical Science ; : 675-678, 2011.
Article in English | WPRIM | ID: wpr-38913

ABSTRACT

This study was conducted to evaluate the influence of alcohol consumption on the risk of ocular trauma. We retrospectively reviewed the medical records of 1,024 patients who visited emergency department and received ophthalmologic examination from January 1 to December 31, 2009. The patients were divided into 2 groups: those with ocular trauma (n = 494) and those without (n = 530); the influence of alcohol consumption was compared between these 2 groups. In the ocular trauma group, the association of the causes and types of ocular trauma with alcohol consumption was evaluated. One of 530 patients of no trauma group and 117 (23.7%) of 494 patients of trauma group were related with alcohol intake, and the difference was statistically significant (P < 0.001). Concerning the causes, physical assault was significantly more common in alcohol-associated injury (P < 0.001). Regarding the types of injury, orbital wall fracture and hyphema showed a significant association with alcohol consumption (P < 0.001). Older age and nighttime injury were significantly related to the increased risk of alcohol-associated ocular trauma (P = 0.018 and < 0.001, respectively). In conclusion, alcohol consumption significantly increases the risk of ocular trauma.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Middle Aged , Alcohol Drinking/adverse effects , Emergency Service, Hospital , Eye Injuries/chemically induced , Hyphema/chemically induced , Orbital Fractures/chemically induced , Republic of Korea , Risk , Vision, Ocular
4.
Rev. Hosp. Clin. Univ. Chile ; 19(1): 30-33, 2008. ilus
Article in Spanish | LILACS | ID: lil-510428

ABSTRACT

The cyanocrilate is utilized in ophthalmology for the processing of small corneal drillings. We present the case of a male of 37 years that itself autoinstilo adhesive of cianoacrilatoin accidental form in its left eye. In spite of the spectacularness of the situation and the diligence of the extraction of the plates, evolution of the patient was good with reepitelización corneal complete and without subsequent consequences. The bibliographical references in ophthalmology refer to the instilaciones accidental, we contribute this clinical case along with a revision of the bibliography.


Subject(s)
Humans , Male , Adult , Cyanoacrylates/adverse effects , Eye Injuries/chemically induced , Adhesives/adverse effects
5.
Rio de Janeiro; s.n; 2006. xviii,60 p. ilus, tab, graf.
Thesis in Portuguese | LILACS | ID: lil-490853

ABSTRACT

A crescente tendência mundial pela substituição do uso de animais em experimentação promoveu a busca por métodos alternativos. Particular ênfase é dada ao desenvolvimento de métodos para substituir o tradicional Teste de Draize, utilizado para acessar a irritação ocular. Este teste tem sido um dos mais criticados pela comunidade científica, principalmente devido à subjetividade de avaliação das lesões oculares e variabilidade dos resultados obtidos em diferentes laboratórios, além das questões éticas com relação ao bem-estar animal. No presente estudo, o ensaio de quantificação de proteínas totais utilizando o corante Azul Brilhante de Coomassie R-250 foi avaliado quanto ao seu valor em predizer o potencial de irritação ocular de vinte xampus e cinco tensoativos. Para este ensaio de citotoxicidade, utilizou-se à linhagem celular derivada de córnea de coelho (SIRC). (...) Apesar de haver a necessidade de se testar um maior número de produtos e da realização de estudos inter-laboratoriais para se acessar a reprodutibilidade desta metodologia; com os resultados obtidos no presente estudo pode-se dizer que o ensaio de quantificação de proteínas totais utilizando o corante Azul Brilhante de Coomassie R-250, além de ser um método com características importantes como rapidez, sensibilidade, simplicidade de execução, baixo custo e alto grau de automação, foi capaz de predizer o potencial de irritação ocular de xampus e tensoativos.


Subject(s)
Animals , Rabbits , Cell Line , Cosmetics/toxicity , Surface-Active Agents/toxicity , Eye Injuries/chemically induced , Animal Testing Alternatives/methods , Cytotoxicity Tests, Immunologic , Ethics
SELECTION OF CITATIONS
SEARCH DETAIL