Made available in DSpace on 2016-04-28T20:15:24Z (GMT). No. of bitstreams: 1 2006- Victor do Espirito Santo Cunha.pdf: 1132781 bytes, checksum: 5edd69d626ede6488b658d61c07e111b (MD5) Previous issue date: 2006-02-22 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / The objective of this case-control study was to evaluate whether allergenic extracts from five species of house dust mites standardized for humans may be taken into account in the diagnosis of the canine atopic dermatitis. Extracts of Dermatophagoides pteronyssinus, D. farinae, Blomia tropicalis, Lepidoglyphus destructor and Tyrophagus putrescentiae have been evaluated through intradermal testing on 45 dogs, from which 20 belonged to the control group and 25 suffered from allergic dermatitis. There was a significant difference on the response pattern between the two groups (p<0,05). Only one dog (5%) from the control group has reacted to the intradermal test, whereas from the allergic group, 14 dogs (56%) have presented at least one positive reaction (odds ratio = 24,2). Most of the positive reactions observed in the allergic group were to the extracts of T. putrescentiae or L. destructor, each one inducing reactions on ten dogs (40%). The D. farinae, D. pteronyssinus e B. tropicalis extracts were responsible for positive reactions on 7 (28%), 3 (12%) and 3 (12%) dogs, respectively. The intradermal testing sensitivity and specificity were 56% and 95%, respectively, and the positive predictive value and the negative predictive value were 93% and 63%, respectively. / O presente estudo do tipo caso-controle teve como objetivo avaliar se extratos alerg?nicos de cinco esp?cies de ?caros da poeira domiciliar padronizados para humanos podem ser utilizados no diagn?stico da dermatite at?pica canina. Extratos de Dermatophagoides pteronyssinus, D. farinae, Blomia tropicalis, Lepidoglyphus destructor e Tyrophagus putrescentiae foram avaliados atrav?s de testes intrad?rmicos em 45 c?es, dos quais 20 controles e 25 com dermatite al?rgica. Uma diferen?a significativa foi observada no padr?o de respostas entre os dois grupos (p<0,05). Apenas um animal (5%) do grupo controle reagiu ao teste cut?neo, enquanto que no grupo dos al?rgicos 14 c?es (56%) apresentaram pelo menos uma rea??o positiva (odds ratio = 24,2). As maiores freq??ncias de rea??es positivas observadas no grupo dos al?rgicos foram aos extratos de T. putrescentiae ou L. destructor, cada um induzindo rea??es em 10 (40%) c?es. Os extratos de D. farinae, D. pteronyssinus e B. tropicalis foram respons?veis por rea??es positivas em 7 (28%), 3 (12%) e 3 (12%) c?es, respectivamente. A sensibilidade e a especificidade dos testes intrad?rmicos foram de 56% e 95%, respectivamente e, o valor preditivo positivo e valor preditivo negativo de 93% e 63%, respectivamente. .

Teste intradérmico avalia reação de hipersensibilidade a diversos agentes que possam apresentar poder reacional alérgico e são comumente utilizados para complementar o diagnóstico da dermatite atópica canina (DAC). Ainda não existe consenso sobre as concentrações de histamina e extratos alergênicos a serem utilizadas. Para determinar a concentração ideal de histamina, como controle positivo, e do limiar irritativo de extratos alergênicos em teste intradérmico é necessário que diversas concentrações sejam avaliadas em uma população bem numerosa de cães hígidos. O objetivo desta pesquisa foi avaliar em 160 cães sadios submetidos a teste intradérmico, quais seriam as concentrações de histamina e de extratos alergênicos consideradas ideais. A solução contendo 0,1 mg/mL de histamina foi considerada como parâmetro ideal, provocando reações cutâneas com diâmetro médio, mediana e desvio padrão, de 15,18 mm, 14,97 mm e 2,07 mm, respectivamente. A partir do estabelecimento da concentração de histamina, foram determinadas as concentrações ótimas dos extratos alergênicos, expressas em PNU/mL: 1.000 para Dermatophagoides pteronyssinus, 500 para D. farinae, 125 para Blomia tropicalis e 2.000 para Malassezia pachydermatis. Futuros estudos devem ser conduzidos em cães atópicos para verificação da acurácia dos testes intradérmicos realizados com essas concentrações. / Intradermal testing evaluates hipersensitivity reaction to different agents that can present allergic reactivity power. It is commonly used to complement canine atopic dermatitis diagnosis. There is still no consensus about histamine concentrations and allergen extracts to be used. The determination of the histamine ideal concentration as positive control and the irritant threshold of allergen extracts for intradermal testing, requires evaluation of different concentrations on a large population of healthy dogs. The purpose of this research was to evaluate the ideal histamine and allergen extracts concentrations on 160 healthy dogs submitted to intradermal testing. A histamine solution 0,1 mg/mL was considered the ideal parameter. It caused cutaneous reactions with average diameter, median measure and standard deviation of 15.18 mm, 14.97 mm and 2.07 mm, respectively. From the histamine concentration establishment, the optimum allergen extracts concentrations were determined, expressed by PNU/mL: 1.000 for Dermatophagoides pteronyssinus, 500 for D. farinae, 125 for Blomia tropicalis and 2.000 for Malassezia pachydermatis. Future studies have to be conducted on atopic dogs to verify the accuracy of the intradermal testing with these concentrations.

Teste intradérmico avalia reação de hipersensibilidade a diversos agentes que possam apresentar poder reacional alérgico e são comumente utilizados para complementar o diagnóstico da dermatite atópica canina (DAC). Ainda não existe consenso sobre as concentrações de histamina e extratos alergênicos a serem utilizadas. Para determinar a concentração ideal de histamina, como controle positivo, e do limiar irritativo de extratos alergênicos em teste intradérmico é necessário que diversas concentrações sejam avaliadas em uma população bem numerosa de cães hígidos. O objetivo desta pesquisa foi avaliar em 160 cães sadios submetidos a teste intradérmico, quais seriam as concentrações de histamina e de extratos alergênicos consideradas ideais. A solução contendo 0,1 mg/mL de histamina foi considerada como parâmetro ideal, provocando reações cutâneas com diâmetro médio, mediana e desvio padrão, de 15,18 mm, 14,97 mm e 2,07 mm, respectivamente. A partir do estabelecimento da concentração de histamina, foram determinadas as concentrações ótimas dos extratos alergênicos, expressas em PNU/mL: 1.000 para Dermatophagoides pteronyssinus, 500 para D. farinae, 125 para Blomia tropicalis e 2.000 para Malassezia pachydermatis. Futuros estudos devem ser conduzidos em cães atópicos para verificação da acurácia dos testes intradérmicos realizados com essas concentrações. / Intradermal testing evaluates hipersensitivity reaction to different agents that can present allergic reactivity power. It is commonly used to complement canine atopic dermatitis diagnosis. There is still no consensus about histamine concentrations and allergen extracts to be used. The determination of the histamine ideal concentration as positive control and the irritant threshold of allergen extracts for intradermal testing, requires evaluation of different concentrations on a large population of healthy dogs. The purpose of this research was to evaluate the ideal histamine and allergen extracts concentrations on 160 healthy dogs submitted to intradermal testing. A histamine solution 0,1 mg/mL was considered the ideal parameter. It caused cutaneous reactions with average diameter, median measure and standard deviation of 15.18 mm, 14.97 mm and 2.07 mm, respectively. From the histamine concentration establishment, the optimum allergen extracts concentrations were determined, expressed by PNU/mL: 1.000 for Dermatophagoides pteronyssinus, 500 for D. farinae, 125 for Blomia tropicalis and 2.000 for Malassezia pachydermatis. Future studies have to be conducted on atopic dogs to verify the accuracy of the intradermal testing with these concentrations.

Teste intradérmico avalia reação de hipersensibilidade a diversos agentes que possam apresentar poder reacional alérgico e são comumente utilizados para complementar o diagnóstico da dermatite atópica canina (DAC). Ainda não existe consenso sobre as concentrações de histamina e extratos alergênicos a serem utilizadas. Para determinar a concentração ideal de histamina, como controle positivo, e do limiar irritativo de extratos alergênicos em teste intradérmico é necessário que diversas concentrações sejam avaliadas em uma população bem numerosa de cães hígidos. O objetivo desta pesquisa foi avaliar em 160 cães sadios submetidos a teste intradérmico, quais seriam as concentrações de histamina e de extratos alergênicos consideradas ideais. A solução contendo 0,1 mg/mL de histamina foi considerada como parâmetro ideal, provocando reações cutâneas com diâmetro médio, mediana e desvio padrão, de 15,18 mm, 14,97 mm e 2,07 mm, respectivamente. A partir do estabelecimento da concentração de histamina, foram determinadas as concentrações ótimas dos extratos alergênicos, expressas em PNU/mL: 1.000 para Dermatophagoides pteronyssinus, 500 para D. farinae, 125 para Blomia tropicalis e 2.000 para Malassezia pachydermatis. Futuros estudos devem ser conduzidos em cães atópicos para verificação da acurácia dos testes intradérmicos realizados com essas concentrações. / Intradermal testing evaluates hipersensitivity reaction to different agents that can present allergic reactivity power. It is commonly used to complement canine atopic dermatitis diagnosis. There is still no consensus about histamine concentrations and allergen extracts to be used. The determination of the histamine ideal concentration as positive control and the irritant threshold of allergen extracts for intradermal testing, requires evaluation of different concentrations on a large population of healthy dogs. The purpose of this research was to evaluate the ideal histamine and allergen extracts concentrations on 160 healthy dogs submitted to intradermal testing. A histamine solution 0,1 mg/mL was considered the ideal parameter. It caused cutaneous reactions with average diameter, median measure and standard deviation of 15.18 mm, 14.97 mm and 2.07 mm, respectively. From the histamine concentration establishment, the optimum allergen extracts concentrations were determined, expressed by PNU/mL: 1.000 for Dermatophagoides pteronyssinus, 500 for D. farinae, 125 for Blomia tropicalis and 2.000 for Malassezia pachydermatis. Future studies have to be conducted on atopic dogs to verify the accuracy of the intradermal testing with these concentrations.

Refrigerated Stability of Diluted Succinylcholine, Pancuronium, and Atracurium. T. Archibald1, S. Brown1, A. Gonzalez-Estrada2 1College of Pharmaceutical Sciences, Bill Gatton College of Pharmacy, East Tennessee State University, Johnson City, TN2Quillen College of Medicine, Allergy and Clinical Immunology, East Tennessee State University, Johnson City, TN The purpose of this study is to investigate the stored stability of dilutions of neuromuscular blocking agents (NMBAs), namely succinylcholine, pancuronium, and atracurium, for skin prick/intradermal testing. Concentrations of NMBAs were monitored by liquid chromatography-mass spectrometry (LC-MS/MS) for a period of 14 days. Dilutions of NMBAs were prepared in saline by factors of 10x, 100x, 1,000x, 10,000x, and 100,000x as sensitivity of the assay allowed. Each drug was prepared with an n = 5 for each dilution, using a different newly opened product for each series. Diluted drug products were stored in a laboratory refrigerator until sampling. On sampling days (day 0, 1, 2, 4, 7, and 14), one milliliter aliquots of each dilution were removed, filtered, and analyzed against freshly prepared set of reference dilutions. The results are expressed as beyond use date (BUD), defined as recovery of drug versus the reference (90-110%). Based on the LC-MS/MS data, the BUD for succinylcholine diluted by 10x and 100x is 48 and 24 hours, respectively. The1000x dilution is also stable for 24 hours.Higher dilutions of succinylcholine (10,000x to100,000x) should be used immediately following preparation (within less than 24 hours), as the potency of these dilutions had decreased below 90% at the 24 hr sampling. .Pancuronium diluted by 10x and 100x, had a BUD of 48 hours, and the1,000x dilution was stable for 24 hours.As with the succinylcholine, the 10,000x and 100,000x dilutions expressed potency of <90% at 24 hours. .Atracurium diluted to 10x had a BUD of 96 hours, the100x dilution is stable for 24 hours yet higher dilutions (1,000x to 10,000x) do not persist beyond 24 hours. . The 100,000x dilution of atracurium was unknown, given than the signal intensity was too weak to monitor by our LC-MS/MS method. With increasing dilution factors, the stability of these drugs in saline decreases, associated with an increasing deviation between samples and freshly prepared references. The most stable dilutions for each of the drugs tested were 10x and 100x. Stability of these drugs is likely compromised by hydrolysis of the ester bonds in the drug molecules.