ABSTRACT
This paper presents the development of an expert system in urological area to support the detection of prostate cancer...
Subject(s)
Electronic Data Processing , Information Systems , Prostatic Neoplasms/diagnosisABSTRACT
Foram estudados dois surtos de enterite hemorrágica em leitöes desmamados, de um sistema de criaçäo de suínos ao ar livre, instalado no sul do Brasil. Colheu-se material para exames parasitológico, bacteriológico, anátomo e histopatológico e histoquímico utilizando-se a técnica de imunoperoxidase de animais clinicamente examinados. Nos surtos identificou-se Escherichia coli como agente causador da enterite. As amostras de E. coli isoladas foram soroagrupadas como 0141:K85ab, K88ab e 045:K"E65" (primeiro surto) e 0138:81, 0141:K85ab e 0115:K"V165" (segundo surto). Em cortes histológicos de várias partes do intestino delgado dos leitöes, onde se isolou 0141:K85ab, K88ab; 0141:K85ab e 0138:K81, examinados pela técnica de imunoperoxidase, observaram-se bactérias especificamente coradas e aderidas ao epitélio intestinal
Subject(s)
Animals , Enteritis , Escherichia coli , Swine/microbiology , Weaning , Swine Diseases , Immunoenzyme Techniques/veterinaryABSTRACT
The Bartha-K and NIA-4 strain of Aujeszky's disease virus (ADV) were readily isolated from oropharyngeal swabs up to 7 days after intranasal vaccination of young piglets. Neither strain could be reisolated 14 days after starting treatment with 10 mg of the corticosteroid isoflupredone acetate per kg of body weight, administered intramuscularly for 4 consecutive days when pigs were 7-9 months of age. Similar treatment with corticosteroid pigs infected with two virulent ADV strains resulted in the reactivation of infection and recovery of ADV from oropharyngeal swabs. Serum neutralizing antibodies were present in all pigles vaccinated twice (2 week interval) intranasally with the attenuated ADV strains, 4 weeks after primary vaccination. However, these antibodies were no longer detectable in some pigs at 12(NIA-4) and 20(Bartha-K) weeks of age even in undilluted sera. Neutralizing antibodies resulting from infection virulent ADV were always detectable, were higher in titer than those produced by the vaccine strains and did not vary in a clear pattern after corticosteroid treatment. These results indicated that the Bartha-K and NIA-4 strains undergo little or no latency in swine and confirm the latency of virulent strains of ADV
Subject(s)
Animals , Adrenal Cortex Hormones/pharmacology , Herpesvirus 1, Suid/drug effects , Immunization , Antibodies, Viral/analysis , Herpesvirus 1, Suid/immunology , Herpesvirus 1, Suid/isolation & purification , SwineABSTRACT
The influence of changes in the KCl concentration of the bath fluid ([KCl]o) on the corrected sinus node recovery time (CSNRT) was studied using the continuous pacing method (M1) and the method of stimulation with premature pulses (M2). M1 and M2 were compared in Krebs-Henseleit solution containing normal (4.6 mM), low (3.1mM, LoKCl) and hight (6.1 mM, HiKCl) [KCl]o. The results revealed that HiKCl increased CSNRT (P < 0.01) and changed the prematurit-CSNRT relationship (P<0.01), whereas LoKCL did not change CSNRT. M1 and M2 were different (P<0.01) regardless of [KCl]o, except for pacing intervals near the spontaneous cycle length
Subject(s)
Potassium Chloride/pharmacology , In Vitro Techniques , Sinoatrial NodeABSTRACT
The effects of pacing frequency, overdrive duration and stimulus amplitude on the sinus node recovery time (SNRT) were studied in the isolated right atrium of the rat. a positive relationship between pacing frequency and the SNRT was observed, whereas overdrive duration ans stimulus amplitude did not affect SNRT. There was no significant interaction among the factors studied. The effect of frequency upon SNRT probably does not involve neurotransmitter release due to stimulation, since in vitro pretreatment with atropine plus propranolol does change the SNRT - frequency relation