Tetanus in a canine: clinical and therapeutic aspects / Tétano em um canino: aspectos clínicos e terapêuticos

Tetanus is a serious and rare disease in small animals, of an acute nature and mediated by the action of the neurotoxin tetanospasmin, from the bacillus Clostridium tetani. This report describes a case of tetanus in a canine, with emphasis on its clinical and therapeutic aspects, in addition to its clinical recovery. A canine, female, Pitbull breed, five months old, in status epilepticus, was attended at the Veterinary Hospital of the University of Passo Fundo. After stabilizing the patient, the animal was found in a trestle position, with generalized spastic paralysis, risus sardonicus, trismus, erect tail and ears, and difficulty in expanding the thorax. The presumptive diagnosis of tetanus was established based on the anamnesis, clinical signs, and laboratory findings. The established supportive treatment included hydro electrolytic replacement, antitetanus serum, antibiotic therapy, analgesia, myorelaxant and anticonvulsant drugs. The patient's intensive management was carried out with urethral and gastroesophageal probing, changes of position every two hours, and reduction of environmental stimuli. Physiotherapy and acupuncture were also used to complement the treatment and accelerate recovery. The patient was discharged one month after the beginning of the treatment, presenting satisfactory evolution. In the present case, the clinical examination in association with the characteristic clinical signs of the disease, added to the detailed anamnesis, was essential for the presumptive diagnosis of tetanus. In addition, intensive management, drug treatment, physiotherapy, and acupuncture enabled the evolution of the clinical condition to cure.

O tétano é uma doença grave e rara em pequenos animais, de caráter agudo e mediada pela ação da neurotoxina tetanospasmina, proveniente do bacilo Clostridium tetani. Neste relato descreve-se um caso de tétano em um canino, com ênfase em seus aspectos clínicos e terapêuticos, além da sua recuperação clínica. Foi atendido no Hospital Veterinário da Universidade de Passo Fundo, um canino, fêmea, da raça Pitbull, com cinco meses, em status epilepticus. Após a estabilização da paciente, constataram-se animal em posição de cavalete, com paralisia espástica generalizada, risus sardonicus, trismo, cauda e orelhas eretas e dificuldade em expandir o tórax. O diagnóstico presuntivo de tétano foi firmado a partir da anamnese, sinais clínicos e achados laboratoriais. O tratamento suporte estabelecido incluiu reposição hidroeletrolítica, soro antitetânico, antibioticoterapia, analgesia, fármacos miorrelaxantes e anticonvulsivantes. O manejo intensivo da paciente foi realizado com sondagem uretral e nasoesofágica, trocas de decúbito a cada duas horas e diminuição de estímulos ambientais. A fisioterapia e a acupuntura também foram utilizadas para complementar o tratamento e acelerar a recuperação. A paciente recebeu alta médica um mês após o início do tratamento, apresentando evolução satisfatória. No presente caso, o exame clínico em associação aos sinais clínicos característicos da doença, acrescidos da anamnese minuciosa foram fundamentais ao diagnóstico presuntivo de tétano. Além disso, o manejo intensivo, o tratamento medicamentoso, assim como a realização de fisioterapia e acupuntura, possibilitaram a evolução do quadro clínico à cura.

Characterization and evaluation of the enzymatic activity of tetanus toxin submitted to cobalt-60 gamma radiation

Tetanus toxin blocks the release of the inhibitory neurotransmitters in the central nervous system and causes tetanus and its main form of prevention is through vaccination. The vaccine is produced by inactivation of tetanus toxin with formaldehyde, which may cause side effects. An alternative way is the use of ionizing radiation for inactivation of the toxin and also to improve the potential immunogenic response and to reduce the post-vaccination side effects. Therefore, the aim of this study was to characterize the tetanus toxin structure after different doses of ionizing radiation of 60Co. Methods Irradiated and native tetanus toxin was characterized by SDS PAGE in reducing and non-reducing conditions and MALD-TOF. Enzymatic activity was measured by FRET substrate. Also, antigenic properties were assessed by ELISA and Western Blot data. Results Characterization analysis revealed gradual modification on the tetanus toxin structure according to doses increase. Also, fragmentation and possible aggregations of the protein fragments were observed in higher doses. In the analysis of peptide preservation by enzymatic digestion and mass spectrometry, there was a slight modification in the identification up to the dose of 4 kGy. At subsequent doses, peptide identification was minimal. The analysis of the enzymatic activity by fluorescence showed 35 % attenuation in the activity even at higher doses. In the antigenic evaluation, anti-tetanus toxin antibodies were detected against the irradiated toxins at the different doses, with a gradual decrease as the dose increased, but remaining at satisfactory levels. Conclusion Ionizing radiation promoted structural changes in the tetanus toxin such as fragmentation and/or aggregation and attenuation of enzymatic activity as the dose increased, but antigenic recognition of the toxin remained at good levels indicating its possible use as an immunogen. However, studies of enzymatic activity of tetanus toxin irradiated with doses above 8 kGy should be further analyzed.(AU)

Characterization and evaluation of the enzymatic activity of tetanus toxin submitted to cobalt-60 gamma radiation

Tetanus toxin blocks the release of the inhibitory neurotransmitters in the central nervous system and causes tetanus and its main form of prevention is through vaccination. The vaccine is produced by inactivation of tetanus toxin with formaldehyde, which may cause side effects. An alternative way is the use of ionizing radiation for inactivation of the toxin and also to improve the potential immunogenic response and to reduce the post-vaccination side effects. Therefore, the aim of this study was to characterize the tetanus toxin structure after different doses of ionizing radiation of 60Co. Methods Irradiated and native tetanus toxin was characterized by SDS PAGE in reducing and non-reducing conditions and MALD-TOF. Enzymatic activity was measured by FRET substrate. Also, antigenic properties were assessed by ELISA and Western Blot data. Results Characterization analysis revealed gradual modification on the tetanus toxin structure according to doses increase. Also, fragmentation and possible aggregations of the protein fragments were observed in higher doses. In the analysis of peptide preservation by enzymatic digestion and mass spectrometry, there was a slight modification in the identification up to the dose of 4 kGy. At subsequent doses, peptide identification was minimal. The analysis of the enzymatic activity by fluorescence showed 35 % attenuation in the activity even at higher doses. In the antigenic evaluation, anti-tetanus toxin antibodies were detected against the irradiated toxins at the different doses, with a gradual decrease as the dose increased, but remaining at satisfactory levels. Conclusion Ionizing radiation promoted structural changes in the tetanus toxin such as fragmentation and/or aggregation and attenuation of enzymatic activity as the dose increased, but antigenic recognition of the toxin remained at good levels indicating its possible use as an immunogen. However, studies of enzymatic activity of tetanus toxin irradiated with doses above 8 kGy should be further analyzed.(AU)

Tratamento de tétano em égua gestante / Tetanus treatmentin pregnant mare / Tratamiento contra el tétanos em yegua preñada

O tétano é uma doença infecciosa não contagiosa, desencadeada pela ação de neurotoxinas produzidas pela bactéria Clostridium tetani. Dentre as espécies mais suscetíveis e de maior ocorrência em estudos epidemiológicos, destacam-se os equinos. Neste estudo de caso, foi atendido no Hospital Veterinário do IFPB campus Sousa, uma fêmea equina, SRD, 8 anos de idade, no 6º mês de gestação. O animal apresentava taquipneia, taquicardia, espasticidade dos membros, protrusão da terceira pálpebra, hiperestesia, cauda em bandeira, rigidez da musculatura do abdome e discreta rigidez da musculatura cervical. Com a intervenção medicamentosa baseada no uso de soro antitetânico, antibioticoterapia com benzilpenicilina benzatina, acepromazina e fluidoterapia à base de solução de ringer com lactato, associado ao repouso em ambiente silencioso e termicamente agradável, obteve-se resultados satisfatórios nos primeiros dias do inicio do tratamento e recuperação total após o 15º dia. Além disso, ao 15°dia pós-internamento e antecedendo a alta do animal foi realizada a avaliação ultrassonográfica transretal, confirmando a viabilidade fetal.

Tetanus is a non-contagious infectious disease triggered by neurotoxins produced by the bacterium Clostridium tetani. Horses are among the most susceptible species and also are frequent targets in epidemiological studies. In this case study, a mare, crossbred, 8 years old, in the sixth month of gestation, was assisted at the Veterinary Hospital at IFPB Sousa campus. The animal was presenting some clinical signs, such as tachypnea, tachycardia, limb spasticity, protrusion of the third eyelid, hyperesthesia, elevated tail, stiffness of the abdomen muscles and slight stiffness of the cervical muscles. Medicines treatment was based on the use of tetanus antitoxin, benzathine penicillin antibiotic therapy, acepromazine and lactate ringer's solution therapy, combined with a calm and thermally pleasant environment. Satisfactory results were obtained from the first days of treatment and full recovery of the animal after the 15th day of hospitalization. In addition, on the 15thday after admission at the hospital and before discharge, a transrectal ultrasound evaluation was performed, confirming fetal viability.

El tétano es uma enfermedad infecciosa desencadenada por la acción de las neurotoxinas producidas por la bacteria Clostridium tetani. Entre las especies más susceptibles y más frecuentes en estudios epidemiológicos, destacan los caballos. En este estudio de caso, fue vista en el Hospital Veterinario Campus Sousa de IFPB, una yegua preñada, SRD, de 8 años de edad, en el sexto mes degestación. El animal presentaba taquipnea, taquicardia, espasticidad, posición del caballete, protrusión del tercer párpado, hiperestesia, colade bandera, rigidez de los músculos del abdomen y leve rigidez de los músculos cervicales. Con la intervención farmacológica basada en el uso del suero antitetánico, la terapia con antibióticos benzatínicos y bencilpenicilinas, la acepromacina y la fluidoterapia basada en la solución de Ringer lactato, asociada con un descanso tranquilo y placentero térmicamente, se obtuvieron resultados satisfactorios en los primeros días de inicio del tratamiento. y recuperación completa después del día 15. Además, el día 15 después del ingreso y antes del alta del animal, se realizó una evaluación ecográfica transrectal, confirmando la viabilidad fetal.

Tratamento de tétano em égua gestante / Tetanus treatmentin pregnant mare / Tratamiento contra el tétanos em yegua preñada

O tétano é uma doença infecciosa não contagiosa, desencadeada pela ação de neurotoxinas produzidas pela bactéria Clostridium tetani. Dentre as espécies mais suscetíveis e de maior ocorrência em estudos epidemiológicos, destacam-se os equinos. Neste estudo de caso, foi atendido no Hospital Veterinário do IFPB campus Sousa, uma fêmea equina, SRD, 8 anos de idade, no 6º mês de gestação. O animal apresentava taquipneia, taquicardia, espasticidade dos membros, protrusão da terceira pálpebra, hiperestesia, cauda em bandeira, rigidez da musculatura do abdome e discreta rigidez da musculatura cervical. Com a intervenção medicamentosa baseada no uso de soro antitetânico, antibioticoterapia com benzilpenicilina benzatina, acepromazina e fluidoterapia à base de solução de ringer com lactato, associado ao repouso em ambiente silencioso e termicamente agradável, obteve-se resultados satisfatórios nos primeiros dias do inicio do tratamento e recuperação total após o 15º dia. Além disso, ao 15°dia pós-internamento e antecedendo a alta do animal foi realizada a avaliação ultrassonográfica transretal, confirmando a viabilidade fetal.(AU)

Tetanus is a non-contagious infectious disease triggered by neurotoxins produced by the bacterium Clostridium tetani. Horses are among the most susceptible species and also are frequent targets in epidemiological studies. In this case study, a mare, crossbred, 8 years old, in the sixth month of gestation, was assisted at the Veterinary Hospital at IFPB Sousa campus. The animal was presenting some clinical signs, such as tachypnea, tachycardia, limb spasticity, protrusion of the third eyelid, hyperesthesia, elevated tail, stiffness of the abdomen muscles and slight stiffness of the cervical muscles. Medicines treatment was based on the use of tetanus antitoxin, benzathine penicillin antibiotic therapy, acepromazine and lactate ringer's solution therapy, combined with a calm and thermally pleasant environment. Satisfactory results were obtained from the first days of treatment and full recovery of the animal after the 15th day of hospitalization. In addition, on the 15thday after admission at the hospital and before discharge, a transrectal ultrasound evaluation was performed, confirming fetal viability.(AU)

El tétano es uma enfermedad infecciosa desencadenada por la acción de las neurotoxinas producidas por la bacteria Clostridium tetani. Entre las especies más susceptibles y más frecuentes en estudios epidemiológicos, destacan los caballos. En este estudio de caso, fue vista en el Hospital Veterinario Campus Sousa de IFPB, una yegua preñada, SRD, de 8 años de edad, en el sexto mes degestación. El animal presentaba taquipnea, taquicardia, espasticidad, posición del caballete, protrusión del tercer párpado, hiperestesia, colade bandera, rigidez de los músculos del abdomen y leve rigidez de los músculos cervicales. Con la intervención farmacológica basada en el uso del suero antitetánico, la terapia con antibióticos benzatínicos y bencilpenicilinas, la acepromacina y la fluidoterapia basada en la solución de Ringer lactato, asociada con un descanso tranquilo y placentero térmicamente, se obtuvieron resultados satisfactorios en los primeros días de inicio del tratamiento. y recuperación completa después del día 15. Además, el día 15 después del ingreso y antes del alta del animal, se realizó una evaluación ecográfica transrectal, confirmando la viabilidad fetal.(AU)

Botulism in cattle associated with osteophagy in the State of Acre, Brazil

Background: Botulism is a non-febrile intoxication resulting from the ingestion of Clostridium botulinum neurotoxinsmanifested by partial or complete flaccid paralysis of the musculature of locomotion, swallowing and respiration. Theobjective of this study was to report the first case of botulinum intoxication associated with osteopathy in the state of Acre,as well as to alert breeders and veterinarians to the incidence of this disease in cattle farming.Case: The present report is an outbreak of botulism in the municipality of Acrelândia, in the state of Acre, which resultedin the death of 16 Nelore beef cattle in approximately 30 days. The affected animals were females in reproductive phasemaintained under extensive breeding system. The main clinical signs presented were weakness in the pelvic limbs, prostration, recumbency and death in less than 48 h. Only one animal, with similar symptomatology, was found alive and submitted to emergency therapeutic measures, but without success. During the necropsy of this bovine, no significant changeswere found, only related to the decubitus and agony time, except for fragments of long bones visualized in the reticulum.Samples of bone particles, ruminal contents, reticulum, rumen and intestine fragments were collected for the detection ofbotulinum toxins by the mouse bioassay method, as well as brain and brain stem for differential diagnosis of rabies andbovine spongiform encephalopathy by direct immunofluorescence and immunohistochemistry, respectively. The sampleswere sent to the Laboratory of General Bacteriology of the Biological Institute, São Paulo, Brazil, and all the analyzespresented negative results.Discussion: One of the main risk factors for the occurrence of botulinum...

Botulism in cattle associated with osteophagy in the State of Acre, Brazil

Background: Botulism is a non-febrile intoxication resulting from the ingestion of Clostridium botulinum neurotoxinsmanifested by partial or complete flaccid paralysis of the musculature of locomotion, swallowing and respiration. Theobjective of this study was to report the first case of botulinum intoxication associated with osteopathy in the state of Acre,as well as to alert breeders and veterinarians to the incidence of this disease in cattle farming.Case: The present report is an outbreak of botulism in the municipality of Acrelândia, in the state of Acre, which resultedin the death of 16 Nelore beef cattle in approximately 30 days. The affected animals were females in reproductive phasemaintained under extensive breeding system. The main clinical signs presented were weakness in the pelvic limbs, prostration, recumbency and death in less than 48 h. Only one animal, with similar symptomatology, was found alive and submitted to emergency therapeutic measures, but without success. During the necropsy of this bovine, no significant changeswere found, only related to the decubitus and agony time, except for fragments of long bones visualized in the reticulum.Samples of bone particles, ruminal contents, reticulum, rumen and intestine fragments were collected for the detection ofbotulinum toxins by the mouse bioassay method, as well as brain and brain stem for differential diagnosis of rabies andbovine spongiform encephalopathy by direct immunofluorescence and immunohistochemistry, respectively. The sampleswere sent to the Laboratory of General Bacteriology of the Biological Institute, São Paulo, Brazil, and all the analyzespresented negative results.Discussion: One of the main risk factors for the occurrence of botulinum...(AU)

Tetanus in horses: an overview of 70 cases / Tétano em equinos: um panorama de 70 casos

Tetanus is characterized by high case fatality rates in horses. Comprehensive case series studies involving equine tetanus from different geographic areas enable the evaluation of prognosis, efficacy of treatment, and control measures. We retrospectively investigated some selected epidemiological data (breed, age, gender, use of the horses, history of vaccination, seasonality, presence of wound/history of surgical procedures, clinical outcomes) and main clinical aspects (clinical signs, incubation period, length of hospitalization, and period between onset signs and hospitalization) in 70 cases of equine tetanus over 1990-2015, with emphasis in the association between these data and the clinical outcomes. High mortality rate (72.9%) was observed in this study. Forty (57.1%) horses presented history of wounds or surgical procedures related with tetanus, represented mainly by lesions in the hind limbs (42.5%), front limbs (15.0%), umbilical infections (7.1%), castration (4.3%), and face wounds (4.3%). Hyperesthesia, limb spasticity, cervical stiffness, tetanic spasms, and restriction of jaw movement were the main consistent clinical signs. Besides no statistical association, all the horses with umbilical infections, wounds in face, prolonged recumbency, sweating, dysphagia/aphagia died, and together with delay between onset of first clinical signs and prompt veterinary assistance (< 5 days) were considered indicative of poor prognosis; whereas there was a significant association (p=0.001) between survival and length of hospitalization > 7 days, seemed as an evidence of good prognosis. The high mortality rate of tetanus, even in horses under specific treatment, highlight the need for early diagnosis, prompt veterinary assistance, and establishment of prophylatic measures in equine farms.(AU)

Tétano é caracterizado por elevada mortalidade em equinos. Estudos envolvendo séries de casos da doença provenientes de diferentes áreas geográficas possibilitam avaliar o prognóstico, eficácia do tratamento e ações de controle. Foram avaliados, retrospectivamente, os principais achados epidemiológicos (raça, idade, sexo, uso dos equinos, história de vacinação, sazonalidade, presença de lesões/histórico de procedimentos cirúrgicos e evolução dos casos) e aspectos clínicos (sinais clínicos, período de incubação, tempo de hospitalização e período entre início dos sinais e hospitalização) em 70 casos de tétano em equinos atendidos entre 1990 e 2015, com ênfase na associação entre os dados clínico-epidemiológicos e a evolução dos casos (mortalidade). Foi observada alta mortalidade (72,9%) nos equinos. Do total de equinos, 57,1% apresentavam lesões ou histórico de procedimentos cirúrgicos relacionados com tétano, representados principalmente por lesões em membros posteriores (42,5%), membros anteriores (15,0%), infecções umbilicais (7,1%), castração (4,3%) e lesões de face (4,3%). Hiperestesia, espasticidade dos membros, rigidez de pescoço, espasmos tetânicos e restrição aos movimentos de mandíbula foram os principais sinais clínicos observados. Apesar da ausência de significância estatística, todos os animais com presença de infecções umbilicais, lesões na face, decúbito prolongado, sudorese e disfagia/afagia evoluíram para óbito e, associado ao início dos sinais clínicos e a demora no atendimento (< 5 dias), foram considerados indicativos de prognóstico reservado. Em contraste, foi observada associação significante (p=0,001) entre a sobrevivência dos animais e o tempo de hospitalização maior que 7 dias, considerado uma indicação de bom prognóstico. A elevada mortalidade do tétano, mesmo em equinos tratados, enfatiza a necessidade do diagnóstico precoce, do rápido atendimento veterinário e adoção de medidas profiláticas nos criatórios.(AU)

Tetanus in horses: an overview of 70 cases / Tétano em equinos: um panorama de 70 casos

Tetanus is characterized by high case fatality rates in horses. Comprehensive case series studies involving equine tetanus from different geographic areas enable the evaluation of prognosis, efficacy of treatment, and control measures. We retrospectively investigated some selected epidemiological data (breed, age, gender, use of the horses, history of vaccination, seasonality, presence of wound/history of surgical procedures, clinical outcomes) and main clinical aspects (clinical signs, incubation period, length of hospitalization, and period between onset signs and hospitalization) in 70 cases of equine tetanus over 1990-2015, with emphasis in the association between these data and the clinical outcomes. High mortality rate (72.9%) was observed in this study. Forty (57.1%) horses presented history of wounds or surgical procedures related with tetanus, represented mainly by lesions in the hind limbs (42.5%), front limbs (15.0%), umbilical infections (7.1%), castration (4.3%), and face wounds (4.3%). Hyperesthesia, limb spasticity, cervical stiffness, tetanic spasms, and restriction of jaw movement were the main consistent clinical signs. Besides no statistical association, all the horses with umbilical infections, wounds in face, prolonged recumbency, sweating, dysphagia/aphagia died, and together with delay between onset of first clinical signs and prompt veterinary assistance (< 5 days) were considered indicative of poor prognosis; whereas there was a significant association (p=0.001) between survival and length of hospitalization > 7 days, seemed as an evidence of good prognosis. The high mortality rate of tetanus, even in horses under specific treatment, highlight the need for early diagnosis, prompt veterinary assistance, and establishment of prophylatic measures in equine farms.(AU)

Tétano é caracterizado por elevada mortalidade em equinos. Estudos envolvendo séries de casos da doença provenientes de diferentes áreas geográficas possibilitam avaliar o prognóstico, eficácia do tratamento e ações de controle. Foram avaliados, retrospectivamente, os principais achados epidemiológicos (raça, idade, sexo, uso dos equinos, história de vacinação, sazonalidade, presença de lesões/histórico de procedimentos cirúrgicos e evolução dos casos) e aspectos clínicos (sinais clínicos, período de incubação, tempo de hospitalização e período entre início dos sinais e hospitalização) em 70 casos de tétano em equinos atendidos entre 1990 e 2015, com ênfase na associação entre os dados clínico-epidemiológicos e a evolução dos casos (mortalidade). Foi observada alta mortalidade (72,9%) nos equinos. Do total de equinos, 57,1% apresentavam lesões ou histórico de procedimentos cirúrgicos relacionados com tétano, representados principalmente por lesões em membros posteriores (42,5%), membros anteriores (15,0%), infecções umbilicais (7,1%), castração (4,3%) e lesões de face (4,3%). Hiperestesia, espasticidade dos membros, rigidez de pescoço, espasmos tetânicos e restrição aos movimentos de mandíbula foram os principais sinais clínicos observados. Apesar da ausência de significância estatística, todos os animais com presença de infecções umbilicais, lesões na face, decúbito prolongado, sudorese e disfagia/afagia evoluíram para óbito e, associado ao início dos sinais clínicos e a demora no atendimento (< 5 dias), foram considerados indicativos de prognóstico reservado. Em contraste, foi observada associação significante (p=0,001) entre a sobrevivência dos animais e o tempo de hospitalização maior que 7 dias, considerado uma indicação de bom prognóstico. A elevada mortalidade do tétano, mesmo em equinos tratados, enfatiza a necessidade do diagnóstico precoce, do rápido atendimento veterinário e adoção de medidas profiláticas nos criatórios.(AU)

Tetanus in horses: an overview of 70 cases

ABSTRACT: Tetanus is characterized by high case fatality rates in horses. Comprehensive case series studies involving equine tetanus from different geographic areas enable the evaluation of prognosis, efficacy of treatment, and control measures. We retrospectively investigated some selected epidemiological data (breed, age, gender, use of the horses, history of vaccination, seasonality, presence of wound/history of surgical procedures, clinical outcomes) and main clinical aspects (clinical signs, incubation period, length of hospitalization, and period between onset signs and hospitalization) in 70 cases of equine tetanus over 1990-2015, with emphasis in the association between these data and the clinical outcomes. High mortality rate (72.9%) was observed in this study. Forty (57.1%) horses presented history of wounds or surgical procedures related with tetanus, represented mainly by lesions in the hind limbs (42.5%), front limbs (15.0%), umbilical infections (7.1%), castration (4.3%), and face wounds (4.3%). Hyperesthesia, limb spasticity, cervical stiffness, tetanic spasms, and restriction of jaw movement were the main consistent clinical signs. Besides no statistical association, all the horses with umbilical infections, wounds in face, prolonged recumbency, sweating, dysphagia/aphagia died, and together with delay between onset of first clinical signs and prompt veterinary assistance ( 5 days) were considered indicative of poor prognosis; whereas there was a significant association (p=0.001) between survival and length of hospitalization > 7 days, seemed as an evidence of good prognosis. The high mortality rate of tetanus, even in horses under specific treatment, highlight the need for early diagnosis, prompt veterinary assistance, and establishment of prophylatic measures in equine farms.

RESUMO: Tétano é caracterizado por elevada mortalidade em equinos. Estudos envolvendo séries de casos da doença provenientes de diferentes áreas geográficas possibilitam avaliar o prognóstico, eficácia do tratamento e ações de controle. Foram avaliados, retrospectivamente, os principais achados epidemiológicos (raça, idade, sexo, uso dos equinos, história de vacinação, sazonalidade, presença de lesões/histórico de procedimentos cirúrgicos e evolução dos casos) e aspectos clínicos (sinais clínicos, período de incubação, tempo de hospitalização e período entre início dos sinais e hospitalização) em 70 casos de tétano em equinos atendidos entre 1990 e 2015, com ênfase na associação entre os dados clínico-epidemiológicos e a evolução dos casos (mortalidade). Foi observada alta mortalidade (72,9%) nos equinos. Do total de equinos, 57,1% apresentavam lesões ou histórico de procedimentos cirúrgicos relacionados com tétano, representados principalmente por lesões em membros posteriores (42,5%), membros anteriores (15,0%), infecções umbilicais (7,1%), castração (4,3%) e lesões de face (4,3%). Hiperestesia, espasticidade dos membros, rigidez de pescoço, espasmos tetânicos e restrição aos movimentos de mandíbula foram os principais sinais clínicos observados. Apesar da ausência de significância estatística, todos os animais com presença de infecções umbilicais, lesões na face, decúbito prolongado, sudorese e disfagia/afagia evoluíram para óbito e, associado ao início dos sinais clínicos e a demora no atendimento ( 5 dias), foram considerados indicativos de prognóstico reservado. Em contraste, foi observada associação significante (p=0,001) entre a sobrevivência dos animais e o tempo de hospitalização maior que 7 dias, considerado uma indicação de bom prognóstico. A elevada mortalidade do tétano, mesmo em equinos tratados, enfatiza a necessidade do diagnóstico precoce, do rápido atendimento veterinário e adoção de medidas profiláticas nos criatórios.

Tétano pós-cirúrgico em canino / Tetanus postoperative in dog

Tetanus is a toxic infectious disease caused by the bacterium Clostridium tetani,affecting animals and humans. An adult dog was taken to veterinary care after thetutor’s observation of paralysis with increased muscle tone, sardonic laughter, raised tailand erects ears after an orchiectomy performed by a practitioner. Based on the clinicalsigns and the history that the patient presented, the proposed diagnosis was tetanus. Thedebridement and cleaning of the surgical wound was performed and the animal wasplaced in a dark and calm environment. The therapy used was metronidazole anddiazepam. The fluid therapy of choice was the Lactated Ringer. However, after a fewhours the patient passed away.

Tétano pós-cirúrgico em canino / Tetanus postoperative in dog

Tetanus is a toxic infectious disease caused by the bacterium Clostridium tetani,affecting animals and humans. An adult dog was taken to veterinary care after thetutors observation of paralysis with increased muscle tone, sardonic laughter, raised tailand erects ears after an orchiectomy performed by a practitioner. Based on the clinicalsigns and the history that the patient presented, the proposed diagnosis was tetanus. Thedebridement and cleaning of the surgical wound was performed and the animal wasplaced in a dark and calm environment. The therapy used was metronidazole anddiazepam. The fluid therapy of choice was the Lactated Ringer. However, after a fewhours the patient passed away.(AU)

Tétano canino ­ Relato de caso / Tetanus in dogs ­ Case report / Tétano canino ­ Relato de caso

O tétano refere-se a uma condição infecciosa ocasionada por toxinas do Clostridium tetani, bacilo Gram positivo e anaeróbico, o qual ao sofrer lise e morte nos tecidos do hospedeiro libera toxinas capazes de bloquear a liberação do neurotransmissor inibidor de glicina e a liberação do ácido gama-amino butírico, levando a um quadro de tetania. Os sinais clínicos da enfermidade são o trismo e opistótono, entre outros. O diagnóstico se dá por meio de histórico e sinais clínicos e o tratamento é sintomático. O presente artigo tem o objetivo de relatar um caso clínico de tétano em um macho canino da raça Pitbull, de um ano de idade. O cão foi, atendido no Hospital Veterinário da Universidade Paranaense, Umuarama, PR, com sinais clínicos neurológicos como rigidez muscular e opistótono, iniciados após ferimento no coxim plantar. Pelo histórico e sinais clínicos firmou-se o diagnóstico de tétano. Foi instituído tratamento, mas o animal teve óbito, sendo que a doença tem alta mortalidade na espécie.(AU)

Tetanus is an infectious condition caused by Clostridium tetani toxins, a Gram-positive, anaerobic bacillus, which, when undergoing lysis and death in the host tissues, releases toxins capable of blocking the release of the glycine inhibitory neurotransmitter and the release of gamma-amino butyric acid, leading to a tetanic state. The clinical signs of the disease are trismus and opisthotonus, among others. The diagnosis is made by means of history and clinical signs, with symptomatic treatment. This article aims to report a clinical case of tetanus in a one-year-old Pitbull male canine. The dog was attended at the Veterinary Hospital at Universidade Paranaense, in the city of Umuarama, Paraná, presenting neurological clinical signs such as muscular and opisthotonous rigidity, initiated after injury to the plantar cushion. The diagnosis of tetanus was confirmed by the history and clinical signs. Treatment was instituted but the animal died, since the disease present a high mortality rate in the species.(AU)

El tétano se refiere a una condición infecciosa ocasionada por toxinas de Clostridium tetani, bacilo Gram positivo y anaeróbico, el cual al sufrir lise y muerte en los tejidos del hospedero suelta toxinas capaces de bloquear la liberación del neurotransmisor inhibidor de glicina, y la liberación del ácido gama amino butírico, llevando a un cuadro de tetania. Los signos clínicos de la enfermedad son el trismo y opistódomo, entre otros. El diagnóstico se da por medio de histórico y signos clínicos y el tratamiento es sintomático. El presente artículo tiene el objetivo de relatar un caso clínico de tétano en un canino macho de la raza Pitbull, de un año de edad. El perro ha sido atendido en el Hospital Veterinario de la Universidad Paranaense, Umuarama PR, con señales clínicos neurológicos como rigidez muscular y opistódomo, iniciados tras herimiento en el coxin plantar. Por el histórico y señales clínicos se ha llegado al diagnóstico de tétano. Se empezó el tratamiento, pero el animal vino a óbito, siendo que la enfermedad tiene alta mortalidad en la especie.(AU)

Tétano canino -­ Relato de caso / Tetanus in dogs ­ Case report

O tétano refere-se a uma condição infecciosa ocasionada por toxinas do Clostridium tetani, bacilo Gram positivo e anaeróbico, o qual ao sofrer lise e morte nos tecidos do hospedeiro libera toxinas capazes de bloquear a liberação do neurotransmissor inibidor de glicina e a liberação do ácido gama-amino butírico, levando a um quadro de tetania. Os sinais clínicos da enfermidade são o trismo e opistótono, entre outros. O diagnóstico se dá por meio de histórico e sinais clínicos e o tratamento é sintomático. O presente artigo tem o objetivo de relatar um caso clínico de tétano em um macho canino da raça Pitbull, de um ano de idade. O cão foi, atendido no Hospital Veterinário da Universidade Paranaense, Umuarama, PR, com sinais clínicos neurológicos como rigidez muscular e opistótono, iniciados após ferimento no coxim plantar. Pelo histórico e sinais clínicos firmou-se o diagnóstico de tétano. Foi instituído tratamento, mas o animal teve óbito, sendo que a doença tem alta mortalidade na espécie.(AU)

Tetanus is an infectious condition caused by Clostridium tetani toxins, a Gram-positive, anaerobic bacillus, which, when undergoing lysis and death in the host tissues, releases toxins capable of blocking the release of the glycine inhibitory neurotransmitter and the release of gamma-amino butyric acid, leading to a tetanic state. The clinical signs of the disease are trismus and opisthotonus, among others. The diagnosis is made by means of history and clinical signs, with symptomatic treatment. This article aims to report a clinical case of tetanus in a one-year-old Pitbull male canine. The dog was attended at the Veterinary Hospital at Universidade Paranaense, in the city of Umuarama, Paraná, presenting neurological clinical signs such as muscular and opisthotonous rigidity, initiated after injury to the plantar cushion. The diagnosis of tetanus was confirmed by the history and clinical signs. Treatment was instituted but the animal died, since the disease present a high mortality rate in the species.(AU)

El tétano se refiere a una condición infecciosa ocasionada por toxinas de Clostridium tetani, bacilo Gram positivo y anaeróbico, el cual al sufrir lise y muerte en los tejidos del hospedero suelta toxinas capaces de bloquear la liberación del neurotransmisor inhibidor de glicina, y la liberación del ácido gama amino butírico, llevando a un cuadro de tetania. Los signos clínicos de la enfermedad son el trismo y opistódomo, entre otros. El diagnóstico se da por medio de histórico y signos clínicos y el tratamiento es sintomático. El presente artículo tiene el objetivo de relatar un caso clínico de tétano en un canino macho de la raza Pitbull, de un año de edad. El perro ha sido atendido en el Hospital Veterinario de la Universidad Paranaense, Umuarama PR, con señales clínicos neurológicos como rigidez muscular y opistódomo, iniciados tras herimiento en el coxin plantar. Por el histórico y señales clínicos se ha llegado al diagnóstico de tétano. Se empezó el tratamiento, pero el animal vino a óbito, siendo que la enfermedad tiene alta mortalidad en la especie.(AU)

Tétano em um equino - relato de caso

O tétano é uma doença causada pelas toxinas tetanolisina, tetanopasmina e toxina não espasmogênica, produzidas pela bactéria Clostridium tetani em anaerobiose. Foi atendido um equino, macho de 2,5 anos que, durante o exame físico, apresentou taquicardia, taquipneia, espasticidade, posição de cavalete, protrusão da terceira pálpebra, hiperestesia, cauda em bandeira, rigidez cervical e dos lábios, sudorese. O tratamento consistiu na aplicação de penicilina benzatina, soro antitetânico, acepromazina, ambiente escuro e silencioso. O animal se recuperou após um mês. O prognóstico geral é reservado e a morte do animal pode ocorrer entre 5 e 15 dias devido à paralisia dos músculos respiratórios. (AU)

The tetanus is a disease caused by toxins tetanolysin, tetanospasmin and no spasmogenic toxin, produced by the bacterium Clostridium tetani, anaerobically. An equine, male of 2.5 years, during the physical examination presented tachycardia, tachypnea, spasticity, easel position, protrusion of the third eyelid, hyperesthesia, flag tail, neck stiffness and lips, sweating. Treatment consisted of administration of benzathine penicillin, anti-tetanus serum, acepromazine, dark and quiet environment. The animal recovered after a month. The overall prognosis is poor and the animal's death may occur 5 to 15 days due to paralysis of the respiratory muscles. (AU)

Tétano em um equino - relato de caso

O tétano é uma doença causada pelas toxinas tetanolisina, tetanopasmina e toxina não espasmogênica, produzidas pela bactéria Clostridium tetani em anaerobiose. Foi atendido um equino, macho de 2,5 anos que, durante o exame físico, apresentou taquicardia, taquipneia, espasticidade, posição de cavalete, protrusão da terceira pálpebra, hiperestesia, cauda em bandeira, rigidez cervical e dos lábios, sudorese. O tratamento consistiu na aplicação de penicilina benzatina, soro antitetânico, acepromazina, ambiente escuro e silencioso. O animal se recuperou após um mês. O prognóstico geral é reservado e a morte do animal pode ocorrer entre 5 e 15 dias devido à paralisia dos músculos respiratórios.

The tetanus is a disease caused by toxins tetanolysin, tetanospasmin and no spasmogenic toxin, produced by the bacterium Clostridium tetani, anaerobically. An equine, male of 2.5 years, during the physical examination presented tachycardia, tachypnea, spasticity, easel position, protrusion of the third eyelid, hyperesthesia, flag tail, neck stiffness and lips, sweating. Treatment consisted of administration of benzathine penicillin, anti-tetanus serum, acepromazine, dark and quiet environment. The animal recovered after a month. The overall prognosis is poor and the animal's death may occur 5 to 15 days due to paralysis of the respiratory muscles.

Tratamento com imunoglobulina anti-toxina tetânica homóloga por via intratecal em tétano neonatal equino - relato de caso / Treatment with intrathecal administration of anti-tetanus toxoid immunoglobulin in neonatal foal tetanus - case report

Tetanus is a severe and highly fatal infectious disease caused by the toxin of Clostridium tetani, an anaerobic spore-forming Grampositive bacterium. The disease is characterized by muscle rigidity (tetany) and can lead to death by respiratory failure or seizures. The present study reports a case of tetanus in a 6-day-old Quarter Horse foal. The animal showed apathy, lateral recumbency, umbilical thickening, protrusion of the third eyelid, seizures and hyperesthesia. Was treated with 50,000 IU/kg of potassium penicillin; with anti-tetanus toxoid immunoglobulin in a dose of 25,000 IU, 20,000 IU and 20,000 IU intravenously, intramuscular and intrathecal, respectively; with acepromazine hydrochloride (0.05 mg / kg); fluid therapy of Ringer"s lactate solution and dressing for umbilical cord. After 48 hours of treatment, the animal demonstrated hyperacute symptoms and died, showing unsuccessful in treating. Possibly the infection has been caused by inadequate umbilical cord cleansing.

O tétano é uma doença infecciosa grave e altamente fatal, causada pela toxina Clostridium tetani, uma bactéria Gram-positiva formadora de esporos anaeróbicos. A doença é caracterizada por rigidez muscular (tetania) e pode levar à morte por parada respiratória ou convulsões. O presente trabalho relata um caso de tétano em um potro Quarto de Milha de 6 dias de idade. O animal apresentava apatia, decúbito lateral, espessamento umbilical, protrusão da terceira pálpebra e convulsões em resposta a estímulos externos, como som, luz e toque. Foi tratado com 110.000 IU / kg de penicilina potássica; com imunoglobulina anti-toxina tetânica homóloga, numa dose de 25000 UI, 20.000 UI e 20000 UI por via intravenosa, intramuscular e intratecal, respectivamente; com cloridrato de acepromazina (0,05 mg / kg); fluidoterapia à base de Ringer com lactato e curativo no cordão umbilical. Decorridas 48 horas de tratamento, o animal demonstrou sintomas hiperagudos e veio à óbito, mostrando insucesso no tratamento. Possivelmente, a infecção foi causada pela limpeza inadequada do cordão umbilical.

Tratamento com imunoglobulina anti-toxina tetânica homóloga por via intratecal em tétano neonatal equino - relato de caso / Treatment with intrathecal administration of anti-tetanus toxoid immunoglobulin in neonatal foal tetanus - case report

Tetanus is a severe and highly fatal infectious disease caused by the toxin of Clostridium tetani, an anaerobic spore-forming Grampositive bacterium. The disease is characterized by muscle rigidity (tetany) and can lead to death by respiratory failure or seizures. The present study reports a case of tetanus in a 6-day-old Quarter Horse foal. The animal showed apathy, lateral recumbency, umbilical thickening, protrusion of the third eyelid, seizures and hyperesthesia. Was treated with 50,000 IU/kg of potassium penicillin; with anti-tetanus toxoid immunoglobulin in a dose of 25,000 IU, 20,000 IU and 20,000 IU intravenously, intramuscular and intrathecal, respectively; with acepromazine hydrochloride (0.05 mg / kg); fluid therapy of Ringer"s lactate solution and dressing for umbilical cord. After 48 hours of treatment, the animal demonstrated hyperacute symptoms and died, showing unsuccessful in treating. Possibly the infection has been caused by inadequate umbilical cord cleansing.(AU)

O tétano é uma doença infecciosa grave e altamente fatal, causada pela toxina Clostridium tetani, uma bactéria Gram-positiva formadora de esporos anaeróbicos. A doença é caracterizada por rigidez muscular (tetania) e pode levar à morte por parada respiratória ou convulsões. O presente trabalho relata um caso de tétano em um potro Quarto de Milha de 6 dias de idade. O animal apresentava apatia, decúbito lateral, espessamento umbilical, protrusão da terceira pálpebra e convulsões em resposta a estímulos externos, como som, luz e toque. Foi tratado com 110.000 IU / kg de penicilina potássica; com imunoglobulina anti-toxina tetânica homóloga, numa dose de 25000 UI, 20.000 UI e 20000 UI por via intravenosa, intramuscular e intratecal, respectivamente; com cloridrato de acepromazina (0,05 mg / kg); fluidoterapia à base de Ringer com lactato e curativo no cordão umbilical. Decorridas 48 horas de tratamento, o animal demonstrou sintomas hiperagudos e veio à óbito, mostrando insucesso no tratamento. Possivelmente, a infecção foi causada pela limpeza inadequada do cordão umbilical.(AU)

Clostridioses em ruminantes revisão / Clostridiosis in ruminants - review

As bactérias do gênero Clostridium são responsáveis pela produção de diversas toxinas causando diferentes enfermidades, de acordo com o efeito produzido no organismo animal. Os clostrídios são divididos em três grupos. O primeiro é o grupo neurotóxico (tétano e botulismo) o segundo grupo consiste de clostrídios com efeito histotóxico (carbúnculo sintomático, edema maligno e hemoglobinúria bacilar), e o terceiro é o enterotoxigênico (enterotoxemia). As enfermidades clostridiais são conhecidas a muito, ainda assim, causam conflito em seu entendimento e compreensão de condições às suas ocorrências. Embora acessíveis, as medidas de controle por vezes são negligenciadas causando prejuízos constantes ao setor. (AU)

The bacteria of the Clostridium genus are responsible for producing various toxins causing various illnesses, according to the effect produced in the animal organism. Clostridia are divided into three groups. The first is the neurotoxic group (tetanus and botulism); the second group consists of clostridia with histotóxico effect (blackleg, malignant edema and bacillary hemoglobinuria), and the third is the enterotoxigenic (enterotoxemia). The clostridial diseases are known to very still, cause conflict in their understanding and comprehension conditions to their occurrences. While affordable, the control measures are sometimes neglected causing constant damage to the sector. (AU)

Clostridioses em ruminantes – revisão / Clostridiosis in ruminants - review

As bactérias do gênero Clostridium são responsáveis pela produção de diversas toxinas causando diferentes enfermidades, de acordo com o efeito produzido no organismo animal. Os clostrídios são divididos em três grupos. O primeiro é o grupo neurotóxico (tétano e botulismo) o segundo grupo consiste de clostrídios com efeito histotóxico (carbúnculo sintomático, edema maligno e hemoglobinúria bacilar), e o terceiro é o enterotoxigênico (enterotoxemia). As enfermidades clostridiais são conhecidas a muito, ainda assim, causam conflito em seu entendimento e compreensão de condições às suas ocorrências. Embora acessíveis, as medidas de controle por vezes são negligenciadas causando prejuízos constantes ao setor.

The bacteria of the Clostridium genus are responsible for producing various toxins causing various illnesses, according to the effect produced in the animal organism. Clostridia are divided into three groups. The first is the neurotoxic group (tetanus and botulism); the second group consists of clostridia with histotóxico effect (blackleg, malignant edema and bacillary hemoglobinuria), and the third is the enterotoxigenic (enterotoxemia). The clostridial diseases are known to very still, cause conflict in their understanding and comprehension conditions to their occurrences. While affordable, the control measures are sometimes neglected causing constant damage to the sector.