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Alves HC, Afonso PHA, Salvador VF, Leal LLLL, de Morais IML, Ferreira LL, de Aquino LM, Couto LFM, Heller LM, Zapa DMB, Cruz BC, Soares VE, Monteiro CMDO, Lopes WDZ. Effect of a preventive strategic control program, with imidocarb dipropionate, against tick fever agents in dairy calves. Trop Anim Health Prod 2023; 55:315. [PMID: 37737958 DOI: 10.1007/s11250-023-03709-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/12/2023] [Indexed: 09/23/2023]
Abstract
Chemoprophylaxis with dipropionate imidocarb (IMD) is a method adopted to prevent cattle tick fever (TF). Sixty weaned dairy heifers (±60 days old), without previous exposure to Rhipicephalus microplus ticks, were housed in Tifton paddocks and were subsequently exposed to R. microplus ticks and monitored up to 315 days old. Thirty animals were kept as controls (T01) and 30 received five preventive strategic treatments with IMD at 21-day intervals (T02). The heifers were monitored weekly by means of packed cell volume (PCV) and blood smears to evaluate the presence of TF agents. Salvage treatments (ST) with diminazene and enrofloxacin were administered when animals showed PCV ≤ 24%. The A. marginale prevalence was 39.3% and 37.7%, B. bovis 6.0%, and 7.3%, and B. bigemina 16.3% and 13.7% for T01 and T02, respectively. Regarding PCV values, group T01 showed lower PCV than group T02, between 119 and 161 days of life, but when animals were 196, 210, 217, and between 252 to 301 days old, an inversion occurred. The IMD treatment protocol was effective in group T02 from day 91 to 175 while treatment was being administered, but from day 182 to 315 after the IMD treatment protocol was completed, the number of salvage treatments against TF agents performed in T02 group increased significantly. The sequential application of IMD treatments with intervals less than 21 days is not recommended.
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Affiliation(s)
- Histefania Costa Alves
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | | | - Vanessa Ferreira Salvador
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Luccas Lourenzo Lima Lins Leal
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Igor Maciel Lopes de Morais
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Lorena Lopes Ferreira
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lídia Mendes de Aquino
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Luiz Fellipe Monteiro Couto
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Luciana Maffini Heller
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Dina Maria Beltran Zapa
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Breno Cayeiro Cruz
- Departamento de Patologia Veterinária, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, São Paulo, Brazil
| | | | - Caio Marcio de Oliveira Monteiro
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Welber Daniel Zanetti Lopes
- Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
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Nunes RH, Hsu CC, da Rocha AJ, do Amaral LLF, Godoy LFS, Watkins TW, Marussi VH, Warmuth-Metz M, Alves HC, Goncalves FG, Kleinschmidt-DeMasters BK, Osborn AG. Multinodular and Vacuolating Neuronal Tumor of the Cerebrum: A New "Leave Me Alone" Lesion with a Characteristic Imaging Pattern. AJNR Am J Neuroradiol 2017; 38:1899-1904. [PMID: 28705817 DOI: 10.3174/ajnr.a5281] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Accepted: 05/03/2017] [Indexed: 11/07/2022]
Abstract
Multinodular and vacuolating neuronal tumor of the cerebrum is a recently reported benign, mixed glial neuronal lesion that is included in the 2016 updated World Health Organization classification of brain neoplasms as a unique cytoarchitectural pattern of gangliocytoma. We report 33 cases of presumed multinodular and vacuolating neuronal tumor of the cerebrum that exhibit a remarkably similar pattern of imaging findings consisting of a subcortical cluster of nodular lesions located on the inner surface of an otherwise normal-appearing cortex, principally within the deep cortical ribbon and superficial subcortical white matter, which is hyperintense on FLAIR. Only 4 of our cases are biopsy-proven because most were asymptomatic and incidentally discovered. The remaining were followed for a minimum of 24 months (mean, 3 years) without interval change. We demonstrate that these are benign, nonaggressive lesions that do not require biopsy in asymptomatic patients and behave more like a malformative process than a true neoplasm.
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Affiliation(s)
- R H Nunes
- From the Division of Neuroradiology (R.H.N., A.J.d.R., L.L.F.d.A., H.C.A.), Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, Brazil .,Division of Neuroradiology (R.H.N., A.J.d.R.), Diagnosticos da America SA, Sao Paulo, Brazil
| | - C C Hsu
- Department of Medical Imaging (C.C.H., T.W.W.), Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - A J da Rocha
- From the Division of Neuroradiology (R.H.N., A.J.d.R., L.L.F.d.A., H.C.A.), Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, Brazil.,Division of Neuroradiology (R.H.N., A.J.d.R.), Diagnosticos da America SA, Sao Paulo, Brazil
| | - L L F do Amaral
- From the Division of Neuroradiology (R.H.N., A.J.d.R., L.L.F.d.A., H.C.A.), Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, Brazil.,Division of Neuroradiology (L.L.F.d.A., V.H.M.), Medimagem, Hospital da Beneficencia Portuguesa de Sao Paulo, Sao Paulo, Brazil
| | - L F S Godoy
- Department of Radiology (L.F.S.G.), Hospital Sirio Libanes, Sao Paulo, Brazil.,Department of Radiology (L.F.S.G.), Medical School, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - T W Watkins
- Department of Medical Imaging (C.C.H., T.W.W.), Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - V H Marussi
- Division of Neuroradiology (L.L.F.d.A., V.H.M.), Medimagem, Hospital da Beneficencia Portuguesa de Sao Paulo, Sao Paulo, Brazil
| | - M Warmuth-Metz
- Department of Neuroradiology (M.W.-M.), University Hospital Würzburg, Würzburg, Germany
| | - H C Alves
- From the Division of Neuroradiology (R.H.N., A.J.d.R., L.L.F.d.A., H.C.A.), Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, Brazil
| | - F G Goncalves
- Department of Radiology (F.G.G.), Children's Hospital of Brasilia, Brasilia, Brazil
| | | | - A G Osborn
- Department of Radiology (A.G.O.), University of Utah, Salt Lake City, Utah
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Alves HC, Valentim AM, Olsson IAS, Antunes LM. Intraperitoneal propofol and propofol fentanyl, sufentanil and remifentanil combinations for mouse anaesthesia. Lab Anim 2016; 41:329-36. [PMID: 17640460 DOI: 10.1258/002367707781282767] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The combination of propofol and a rapid-acting opioid, such as fentanyl, sufentanil or remifentanil, is a relatively safe, total intravenous anaesthesia technique, commonly used in humans and which has been investigated in laboratory animals. The objective of this study was to evaluate these combinations for anaesthesia of mice by the intraperitoneal (i.p.) route. Sixty-seven mice, divided into groups of four, were used to test 28 combinations of propofol alone and propofol with fentanyl, sufentanil or remifentanil administered i.p. The dose ranges of drugs studied were propofol 50–200 mg/kg, fentanyl 0.2–0.4 mg/kg, sufentanil 0.05–0.1 mg/kg and remifentanil 0.2–1.0 mg/kg. The loss of righting reflex (RR) and the loss of pedal withdrawal reflex (PWR) were recorded along with the duration and quality of recovery. The results obtained in these studies were unpredictable. The same dose combinations of propofol and opioids were associated with different responses in different individuals. Higher doses did not induce loss of RR and PWR in all animals and were associated with high mortality rates. An adequate hypnotic level was only observed with higher doses of propofol. The synergistic effect of propofol and the opioids was not sufficient to allow surgical procedures. Animals that reached PWR loss showed tail rigidity, shaking limbs and scratched their heads with their forefeet. Higher opioid doses induced respiratory depression and higher death rates. The inconsistency between and within groups may be associated with the i.p. route. The results reported here show that the i.p. route is not appropriate for mouse anaesthesia using propofol alone or in combination with fentanyl, sufentanil or remifentanil.
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Affiliation(s)
- H C Alves
- CECAV-UTAD, Centro de Estudos de Ciências Animais e Veterinárias, Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal.
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Abstract
Fast recoveries are essential when looking for a safe anaesthetic protocol to use on mice. Propofol is a short-acting anaesthetic agent, which provides a smooth, fast recovery. A recent study carried out in our laboratory showed that the intraperitoneal (i.p.) administration of propofol combined with a fast-acting opioid does not provide a sufficiently stable anaesthesia. In this experiment, we hypothesized that the additional application of medetomidine would increase muscle relaxation and analgesia. Fifty-four male CD1 mice, divided into six groups of five and three groups of eight, were used to test nine different combinations of propofol, medetomidine and fentanyl administered i.p. and reversed with atipamezole 30 min after induction. These combinations were composed in the following manner: propofol 75 mg/kg, medetomidine 1 and 2 mg/kg and fentanyl 0.1, 0.15 and 0.2 mg/kg. The depth of anaesthesia, loss of righting reflex, loss of pedal withdrawal reflex, pulse rate and respiratory rate were recorded along with the duration and quality of the recovery. The combination of propofol and medetomidine provided a predictable induction, hypnosis and muscle relaxation, but surgical anaesthesia (loss of pedal withdrawal reflex) was not achieved. The addition of fentanyl increased analgesia leading to surgical anaesthesia. We concluded that a combination of 75/1/0.2 mg/kg of propofol, medetomidine and fentanyl, respectively, is a safe, easy and reversible technique for i.p. anaesthesia in mice, providing a surgical window of 15 min and restraint for 30 min with a fast recovery.
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Affiliation(s)
- H C Alves
- Centro de Estudos de Ciências Animais e Veterinárias, Universidade de Trás-os-Montes e Alto Douro, Apartado 1013, 5000-801 Vila Real, Portugal.
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