1
|
Fonseca MG, Auad AM, Resende TT, Veríssimo BA, Oliveira CM. Exposure of insects and host plants to different concentrations of CO2 affects the performance of Mahanarva spectabilis (Hemiptera: Cercopidae) in successive insect generations. BRAZ J BIOL 2023; 83:e273470. [PMID: 37851770 DOI: 10.1590/1519-6984.273470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 08/09/2023] [Indexed: 10/20/2023] Open
Abstract
The performance of three successive generations of Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae) fed on four forages exposed to environments with different CO2 concentrations was evaluated. In the first bioassay, we utilized the following scenarios: A) plants and insects were kept at high and constant CO2 (700 ppm) and B) the insects were kept at CO2 700 ppm and fed on plants from the greenhouse (average of 390 ppm). In the second bioassay, we utilized the following scenarios: C) plants and insects were kept in a greenhouse and D) the insects were kept in the greenhouse and fed on plants kept at CO2 700 ppm. The survival and duration of the nymphal and adult stages and the number of eggs/female of M. spectabilis were evaluated. It was only possible to evaluate the cumulative effects of the increase of CO2 on three successive generations of M. spectabilis kept in a greenhouse, due to the reduced survival of the insects in the first generation in the laboratory. A greater direct than indirect effect of the CO2 level on the performance of M. spectabilis was observed. Furthermore, it should be considered that the effect of CO2 elevation on the survival, periods of development, and fecundity, when taken together, can significantly impact the population dynamics of M. spectabilis in future climate scenarios.
Collapse
Affiliation(s)
- M G Fonseca
- Embrapa Gado de Leite, Laboratório de Entomologia, Juiz de Fora, MG, Brasil
| | - A M Auad
- Embrapa Gado de Leite, Laboratório de Entomologia, Juiz de Fora, MG, Brasil
| | - T T Resende
- Embrapa Gado de Leite, Laboratório de Entomologia, Juiz de Fora, MG, Brasil
| | - B A Veríssimo
- Universidade Federal de Juiz de Fora, Departamento de Biodiversidade e Conservação da Natureza, Juiz de Fora, MG, Brasil
| | | |
Collapse
|
2
|
Flood T, O Neill A, Oliveira CM, Barbosa B, Soares AL, Muscat K, Guille S, McClure P, Hughes C, McFadden S. Patients' perspectives of the skills and competencies of therapy radiographers/radiation therapists (TRs/RTTs) in the UK, Portugal and Malta; a qualitative study from the SAFE Europe project. Radiography (Lond) 2023; 29 Suppl 1:S117-S127. [PMID: 36959043 DOI: 10.1016/j.radi.2023.03.002] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/08/2023] [Accepted: 03/02/2023] [Indexed: 03/25/2023]
Abstract
INTRODUCTION The role of the Therapy Radiographer/Radiation Therapist (TR/RTT) is to provide radiotherapy to patients with a cancer diagnosis. This includes, not only administration of treatment, but also management of side-effects and provision of support/care. Despite this role being consistent throughout Europe, there is currently no standardisation of education for TRs/RTTs. The SAFE EUROPE project aims to standardize TR/RTT education to enable 'safe and free exchange' of TRs/RTTs across Europe. Consequently, this study aims to explore patients' perspectives regarding the current skills and competencies of TRs/RTTs. METHODS From May 2021 to February 2022, semi-structured interviews were conducted with patients who had recently received radiotherapy in the UK, Malta and Portugal. Ethical approval for this study was granted by the NHS Research Ethics Committee with additional local approvals obtained. RESULTS Forty-eight participants from the UK (n = 18), Portugal (n = 19), and Malta (n = 11) completed interviews. Participants described high satisfaction with TRs'/RTTs' competence and skills in all three countries. The main theme arising from the analysis was the importance of trust building with TRs/RTTs. Six factors were identified as influencing levels of trust: communication; side-effect management; team consistency; relational skills; patient dignity; and competence. A small number of patients reported feeling rushed and not having their physical and emotional needs met by TRs/RTTs. CONCLUSION This multicentre study demonstrated that patients perceive TRs/RTTs in the UK, Malta and Portugal as highly competent and skilled. Practical recommendations are provided to address identified deficits in practice, which can be addressed through adaptation of TR/RTT education/training and clinical practice. IMPLICATIONS FOR PRACTICE Recommendations arising from this study are important to ensure that TRs/RTTs have transferable skills that provide consistently high quality care to patients throughout Europe.
Collapse
Affiliation(s)
- T Flood
- Lecturer in Radiotherapy and Oncology, Ulster University Northern Ireland, UK.
| | - A O Neill
- Ulster University, Northern Ireland, UK.
| | - C M Oliveira
- Radiotherapy Department, Instituto Português de Oncologia Do Porto (IPO Porto), R. Dr. António Bernardino de Almeida 865, 4200-072 Porto, Portugal.
| | - B Barbosa
- Radiotherapy Department, Instituto Português de Oncologia Do Porto (IPO Porto), R. Dr. António Bernardino de Almeida 865, 4200-072 Porto, Portugal.
| | - A L Soares
- Medical Physics Service,Portuguese Oncology Institute of Porto, Porto, Portugal.
| | - K Muscat
- University of Malta, MSD 2080, Malta.
| | - S Guille
- Ulster University, Northern Ireland, UK.
| | - P McClure
- Ulster University, Northern Ireland, UK.
| | - C Hughes
- School of Nursing and School of Health Sciences, Ulster University, Northern Ireland, UK.
| | - S McFadden
- Senior Lecturer, Ulster University, Northern Ireland, UK.
| |
Collapse
|
3
|
Kitamura M, Rigolin GF, Cardoso FG, Simonaio JH, Ramos JC, Oliveira CM, Santoro SAP, Santos V, Brunetti IL. ANÁLISE DOS REGISTROS DA COMUNICAÇÃO DE SINAIS E SINTOMAS DE PROCESSOS INFECCIOSOS DO HEMONÚCLEO REGIONAL DE ARARAQUARA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
4
|
Santos ACAD, Espósito TS, Magalhães NNS, Almeida RM, Fabri JC, Fonseca LANS, Mathiasi LB, Souza SPS, Oliveira CM, Rodrigues DOW. PRODUÇÃO CIENTÍFICA DE UMA LIGA ACADÊMICA DE HEMATOLOGIA DA ZONA DA MATA MINEIRA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.1047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
5
|
Santos OFD, Lopes JAS, Espósito TS, Santos ACAD, Almeida RM, Gusmão ADC, Magalhaes NNS, Sudário LC, Oliveira CM, Rodrigues DOW. DESAFIOS TRANSFUSIONAIS EM MIELOMA MÚLTIPLO EM PACIENTES EM USO DE ANTICORPOS ANTI-CD38. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
6
|
Lopes JAS, Santos ACAD, Espósito TS, Magalhaes NNS, Almeida RM, Gusmão ADC, Santos OFD, Rodrigues LOW, Oliveira CM, Rodrigues DOW. HEMOPHILIA C: A RARE CASE REPORT IN WOMAN. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
7
|
Tozetto-Mendoza TR, Ibrahim KY, Tateno AF, Oliveira CM, Sumita LM, Sanchez MC, Luna EJ, Pierrotti LC, Drexler JF, Braz-Silva PH, Pannuti CS, Romano CM. A50 Genotypic distribution of HHV-8 in aids individuals without and with Kaposi sarcoma. Virus Evol 2018. [PMCID: PMC5905436 DOI: 10.1093/ve/vey010.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- T R Tozetto-Mendoza
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| | - K Y Ibrahim
- Department of Infectious Diseases, Clinics Hospital of the School of Medicine, Universidade de Sao Paulo, Brazil
| | - A F Tateno
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
- Institute of Virology, University of Bonn Medical Centre, Bonn, Germany Centre for Infection Research (DZIF), Partner Site, BonnCologne, Germany
| | - C M Oliveira
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| | - L M Sumita
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| | - M C Sanchez
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| | - E J Luna
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| | - L C Pierrotti
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| | - J F Drexler
- Institute of Virology, University of Bonn Medical Centre, Bonn, Germany Centre for Infection Research (DZIF), Partner Site, BonnCologne, Germany
| | - P H Braz-Silva
- Department of Pathology, School of Dentistry, University of São Paulo, Brazil
| | - C S Pannuti
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| | - C M Romano
- Laboratory of Virology, Institute of Tropical Medicine, Universidade de Sao Paulo, Brazil
| |
Collapse
|
8
|
Oliveira CM, Santos MJ, Amabile RF, Frizzas MR, Bartholo GF. Coffee berry borer in conilon coffee in the Brazilian Cerrado: an ancient pest in a new environment. Bull Entomol Res 2018; 108:101-107. [PMID: 28612699 DOI: 10.1017/s0007485317000530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this study was to verify the occurrence of the coffee berry borer, Hypothenemus hampei (Ferrari), and to evaluate the population fluctuation of the pest in the Brazilian Cerrado (Federal District). The study was conducted, between November 2014 and October 2015, at Embrapa Cerrados (Planaltina/DF, Brazil) in an irrigated conilon coffee production area. In November 2014, 120 samples (ten berries/sample) were collected from berries that had fallen on the ground from the previous harvest. Between November 2014 and October 2015, insects were collected weekly, using traps (polyethylene terephthalate bottles) baited with ethyl alcohol (98 GL), ethyl alcohol (98 GL) with coffee powder, or molasses. Between January and July 2015, samples were collected fortnightly from 92 plants (12 berries per plant). All samples were evaluated for the presence of adult coffee berry borers. Samples from the previous harvest had an attack incidence of 72.4%. The baited traps captured 4062 H. hampei adults, and showed no statistical difference in capture efficiency among the baits. Pest population peaked in the dry season, with the largest percentage of captured adults occurring in July (31.0%). An average of 18.6% of the collected berries was attacked by the borer and the highest percentage incidence was recorded in July (33.2%). Our results suggest that the coffee berry borer, if not properly managed, could constitute a limiting factor for conilon coffee production in the Brazilian Cerrado.
Collapse
Affiliation(s)
- C M Oliveira
- Embrapa Cerrados,Rod. BR 020 km 18 (Brasília/Fortaleza),C. Postal 08223,Planaltina,Brasília/DF,73310-970,Brazil
| | - M J Santos
- UPIS - Faculdades Integradas,Departamento de Agronomia,Rodovia BR 020,km 18/DF 335, km 4,8,Planaltina,Brasília/DF,Brazil
| | - R F Amabile
- Embrapa Cerrados,Rod. BR 020 km 18 (Brasília/Fortaleza),C. Postal 08223,Planaltina,Brasília/DF,73310-970,Brazil
| | - M R Frizzas
- Universidade de Brasília,Departamento de Zoologia,Instituto de Ciências Biológicas,Brasília/DF,70910-900,Brazil
| | - G F Bartholo
- Embrapa Café,Parque Estação Biológica (PqEB),Av. W3 Norte (final),Brasília/DF,70770-901,Brazil
| |
Collapse
|
9
|
Oliveira CM, Silva CN, Frizzas MR, Dianese AC. Measuring population fluctuation of jatropha stem-borer [Cophes notaticeps (Marshall)] in the Brazilian Cerrado using a new trap. Bull Entomol Res 2017; 107:627-633. [PMID: 28185606 DOI: 10.1017/s0007485317000116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study aimed to monitor the population fluctuation of Cophes notaticeps (Marshall) (Coleoptera: Curculionidae) in a jatropha (Jatropha curcas L.) plantation in the Federal District, Brazil, through the use of a new trap, combined with different attractive lures and trap colors. The study was conducted at Embrapa Cerrados (Planaltina/DF) in a field trial with 720 plants. The new trap, named CPAC16, was made with PVC pipes (100 mm in diameter) of about 40 cm in length, with a window (8 × 10 cm2) in its center to enable insect access. A lure compartment was fixed on the inside of the trap`s top, and a pot, containing water and detergent, was placed at its bottom to collect the insects. The traps were painted in red, yellow, blue and green. Molasses, ethanol and pineapple were used as attractive lures. The traps were in the field trial area between May 2013 and April 2014 and the insects were collected weekly. The incidence of plants presenting damage caused by C. notaticeps was evaluated in the beginning and at the end of the study. The CPAC16 trap proved efficient in monitoring C. notaticeps. About 3494 of C. notaticeps adults were collected during the study. There were no significant differences among traps painted with different colors. The most attractive lure was molasses collecting 75.2% (n = 2627) of the specimens. Although the population peak occurred in December (n = 1162), C. notaticeps were collected throughout the year. The incidence of plants attacked by C. notaticeps ranged from 66.4% (start) to 100% (end).
Collapse
Affiliation(s)
- C M Oliveira
- Embrapa Cerrados,Rod. BR 020 km 18 (Brasília/Fortaleza),C. Postal 08223,Planaltina,Brasília/DF, 73310-970,Brazil
| | - C N Silva
- UPIS - Faculdades Integradas, Departamento de Agronomia,Rodovia BR 020, km 18/DF 335, km 4,8, Planaltina,Brasília/DF,Brazil
| | - M R Frizzas
- Departamento de Zoologia,Universidade de Brasília, Instituto de Ciências Biológicas,Brasília/DF, 70910-900,Brazil
| | - A C Dianese
- Embrapa Cerrados,Rod. BR 020 km 18 (Brasília/Fortaleza),C. Postal 08223,Planaltina,Brasília/DF, 73310-970,Brazil
| |
Collapse
|
10
|
Figueiredo IN, Kumar S, Oliveira CM, Ramos JD, Engquist B. Automated lesion detectors in retinal fundus images. Comput Biol Med 2015; 66:47-65. [PMID: 26378502 DOI: 10.1016/j.compbiomed.2015.08.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 02/16/2015] [Revised: 07/15/2015] [Accepted: 08/08/2015] [Indexed: 11/17/2022]
Abstract
Diabetic retinopathy (DR) is a sight-threatening condition occurring in persons with diabetes, which causes progressive damage to the retina. The early detection and diagnosis of DR is vital for saving the vision of diabetic persons. The early signs of DR which appear on the surface of the retina are the dark lesions such as microaneurysms (MAs) and hemorrhages (HEMs), and bright lesions (BLs) such as exudates. In this paper, we propose a novel automated system for the detection and diagnosis of these retinal lesions by processing retinal fundus images. We devise appropriate binary classifiers for these three different types of lesions. Some novel contextual/numerical features are derived, for each lesion type, depending on its inherent properties. This is performed by analysing several wavelet bands (resulting from the isotropic undecimated wavelet transform decomposition of the retinal image green channel) and by using an appropriate combination of Hessian multiscale analysis, variational segmentation and cartoon+texture decomposition. The proposed methodology has been validated on several medical datasets, with a total of 45,770 images, using standard performance measures such as sensitivity and specificity. The individual performance, per frame, of the MA detector is 93% sensitivity and 89% specificity, of the HEM detector is 86% sensitivity and 90% specificity, and of the BL detector is 90% sensitivity and 97% specificity. Regarding the collective performance of these binary detectors, as an automated screening system for DR (meaning that a patient is considered to have DR if it is a positive patient for at least one of the detectors) it achieves an average 95-100% of sensitivity and 70% of specificity at a per patient basis. Furthermore, evaluation conducted on publicly available datasets, for comparison with other existing techniques, shows the promising potential of the proposed detectors.
Collapse
Affiliation(s)
- I N Figueiredo
- CMUC, Department of Mathematics, University of Coimbra, Portugal.
| | - S Kumar
- Department of Applied Sciences, National Institute of Technology Delhi, Delhi 110040, India
| | - C M Oliveira
- Retmarker, Coimbra, Portugal; Universidade Nova de Lisboa, Portugal
| | | | - B Engquist
- Department of Mathematics and ICES, The University of Texas at Austin, Austin, USA
| |
Collapse
|
11
|
Oliveira CM, Camões MF, Bigus P, Fachado AA, Silva RB. Validation of atmospheric aerosols parallel sampling in a multifold device. Environ Monit Assess 2015; 187:380. [PMID: 26013655 DOI: 10.1007/s10661-015-4615-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 05/19/2015] [Indexed: 06/04/2023]
Abstract
In this work, particulate matter was collected using an active sampling system consisting of a PM10 (<10 μm) inlet coupled to a multifold device containing six channels, connected to a vacuum pump. Each channel was equipped with a filter holder fitted with adequately chosen filters. The system was fixed on a metallic structure, which was placed on the roof of the laboratory building, at the Faculty of Sciences, in Lisbon. Sampling took place under flow-controlled conditions. Aerosols were extracted from the filters with water, in defined conditions, and the water-soluble fraction was quantified by ion chromatography (IC) for the determination of inorganic anions (Cl(-), NO3 (-) and SO4 (2-)). Equivalent sampling through the various channels was validated. Validation was based on the metrological compatibility of the content results for the various filters. Ion masses are metrologically equivalent when their absolute difference is smaller than the respective expanded uncertainty. When this condition is verified, the studied multifold device produces equivalent samples.
Collapse
Affiliation(s)
- C M Oliveira
- Centro de Química Estrutural-Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal,
| | | | | | | | | |
Collapse
|
12
|
Macedo IC, Rozisky JR, Oliveira C, Oliveira CM, Laste G, Nonose Y, Santos VS, Marques PR, Ribeiro MFM, Caumo W, Torres ILS. Chronic stress associated with hypercaloric diet changes the hippocampal BDNF levels in male Wistar rats. Neuropeptides 2015; 51:75-81. [PMID: 25963531 DOI: 10.1016/j.npep.2015.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 11/21/2014] [Accepted: 01/21/2015] [Indexed: 01/24/2023]
Abstract
Chronic stress, whether associated with obesity or not, leads to different neuroendocrine and psychological changes. Obesity or being overweight has become one of the most serious worldwide public health problems. Additionally, it is related to a substantial increase in daily energy intake, which results in substituting nutritionally adequate meals for snacks. This metabolic disorder can lead to morbidity, mortality, and reduced quality of life. On the other hand, brain-derived neurotrophic factor (BDNF) is widely expressed in all brain regions, particularly in the hypothalamus, where it has important effects on neuroprotection, synaptic plasticity, mammalian food intake-behavior, and energy metabolism. BDNF is involved in many activities modulated by the hypothalamic-pituitary-adrenal (HPA) axis. Therefore, this study aims to evaluate the effect of obesity associated with chronic stress on the BDNF central levels of rats. Obesity was controlled by analyzing the animals' caloric intake and changes in body weight. As a stress parameter, we analyzed the relative adrenal gland weight. We found that exposure to chronic restraint stress during 12 weeks increases the adrenal gland weight, decreases the BDNF levels in the hippocampus and is associated with a decrease in the calorie and sucrose intake, characterizing anhedonia. These effects can be related stress, a phenomenon that induces depression-like behavior. On the other hand, the rats that received the hypercaloric diet had an increase in calorie intake and became obese, which was associated with a decrease in hypothalamus BDNF levels.
Collapse
Affiliation(s)
- I C Macedo
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Graduate Program in Biological Sciences - Physiology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - J R Rozisky
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Graduate Program in Medical Sciences - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - C Oliveira
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Graduate Program in Medical Sciences - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - C M Oliveira
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Graduate Program in Medical Sciences - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - G Laste
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Graduate Program in Medical Sciences - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - Y Nonose
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - V S Santos
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - P R Marques
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Graduate Program in Medical Sciences - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - M F M Ribeiro
- Graduate Program in Biological Sciences - Physiology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Neuro-Humoral Interaction Laboratory, Department of Physiology - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90050-170, Brazil
| | - W Caumo
- Graduate Program in Medical Sciences - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - I L S Torres
- Pain Pharmacology and Neuromodulation Laboratory: Animal Models, Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Graduate Program in Biological Sciences - Physiology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Graduate Program in Medical Sciences - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil.
| |
Collapse
|
13
|
Oliveira CM, Economou T, Bailey T, Mendonça D, Pina MF. The interactions between municipal socioeconomic status and age on hip fracture risk. Osteoporos Int 2015; 26:489-98. [PMID: 25344400 DOI: 10.1007/s00198-014-2869-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 08/20/2014] [Indexed: 11/28/2022]
Abstract
SUMMARY Age modifies the effect of area-level socioeconomic status (SES) in the risk of fragility hip fractures (HF). For older individuals, the risk of HF increases as SES increases. For younger individuals, risk of HF increases as SES decreases. Our study may help decision-makers to better direct the implementation of political decisions. INTRODUCTION The effect of socioeconomic status (SES) on hip fracture (HF) incidence remains unclear. The objective of this study is to evaluate the association between HF incidence and municipality-level SES as well as interactions between age and SES. METHODS From the Portuguese Hospital Discharge Database, we selected hospitalizations (2000-2010) of patients aged 50+, with HF diagnosis (codes 820.x, ICD9-CM), caused by traumas of low/moderate energy, excluding bone cancer cases and readmissions for aftercare. Municipalities were classified according to SES (deprived to affluent) using 2001 Census data. A spatial Bayesian hierarchical regression model (controlling for data heterogeneity and spatial autocorrelation), using the Poisson distribution, was used to quantify the relative risk (RR) of HF, 95% credible interval (95%CrI), and analyze the interaction between age and SES after adjusting for rural conditions. RESULTS There were 96,905 HF, 77.3% of which were on women who, on average, were older than men (mean age 81.2±8.5 vs 78.2±10.1 years) at admission (p<0.001). In women, there was a lower risk associated with better SES: RR=0.83 (95%CrI 0.65-1.00) for affluent versus deprived. There was an inverse association between SES and HF incidence rate in the youngest and a direct association in the oldest, for both sexes, but significant only between deprived and affluent in older ages (≥75 years). CONCLUSIONS Interaction between SES and age may be due to inequalities in lifestyles, access to health systems, and preventive actions. These results may help decision-makers to better understand the epidemiology of hip fractures and to better direct the available funding.
Collapse
Affiliation(s)
- C M Oliveira
- INEB, Instituto de Engenharia Biomédica, Rua do Campo Alegre, 823, 4150-180, Porto, Portugal,
| | | | | | | | | |
Collapse
|
14
|
Oliveira CM, Economou T, Bailey T, Carvalho M, Pina MF. Effects of climatic factors on spatial-temporal distribution of hip fracture. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku162.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
15
|
Oliveira CM, Moreira J, Gomes LF, Camargo-Mathias MI, Lino-Neto J. Sperm Bundles in the Seminal Vesicle of the Crematogaster victima (Smith) Adult Males (Hymenoptera: Formicidae). Neotrop Entomol 2014; 43:201-208. [PMID: 27193615 DOI: 10.1007/s13744-014-0199-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 12/19/2013] [Indexed: 06/05/2023]
Abstract
This study establishes the presence of spermatodesm in the seminal vesicles of sexually mature males of Crematogaster victima (Smith). In this species, the spermatozoa are maintained together by an extracellular matrix in which the acrosomal regions are embedded. This characteristic has not yet been observed in any other Aculeata. However, the sperm morphology in this species is similar to that described for other ants. The spermatozoa measure on average 100 μm in length, and the number of sperm per bundle is up to 256. They are composed of a head formed by the acrosome and nucleus; this is followed by the flagellum, which is formed by the centriolar adjunct, an axoneme with a 9 + 9 + 2 microtubule pattern, two mitochondrial derivatives, and two accessory bodies. The acrosome is formed by the acrosomal vesicle and perforatorium. The nucleus is filled with compact chromatin with many areas of thick and non-compacted filaments. Both mitochondrial derivatives have the same shape and diameters. The presence of sperm bundles in sexually mature males differentiates C. victima from other ants; however, the similarities in the sperm ultrastructure support the monophyly of this insect group.
Collapse
Affiliation(s)
- C M Oliveira
- Depto de Biologia Geral, Univ Federal de Viçosa, Viçosa, MG, Brasil
| | - J Moreira
- Depto de Biologia, Instituto de Biociências, Univ Estadual Paulista "Júlio de Mesquita Filho", Rio Claro, SP, Brasil
| | - L F Gomes
- Depto de Biologia, Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Cubatão, MA, Brasil
| | - M I Camargo-Mathias
- Depto de Biologia, Instituto de Biociências, Univ Estadual Paulista "Júlio de Mesquita Filho", Rio Claro, SP, Brasil
| | - J Lino-Neto
- Depto de Biologia Geral, Univ Federal de Viçosa, Viçosa, MG, Brasil.
| |
Collapse
|
16
|
Coradini K, Lima FO, Oliveira CM, Chaves PS, Athayde ML, Carvalho LM, Beck RCR. Co-encapsulation of resveratrol and curcumin in lipid-core nanocapsules improves their in vitro antioxidant effects. Eur J Pharm Biopharm 2014; 88:178-85. [PMID: 24780440 DOI: 10.1016/j.ejpb.2014.04.009] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/02/2014] [Accepted: 04/04/2014] [Indexed: 12/15/2022]
Abstract
Resveratrol and curcumin are natural antioxidants found in the human diet that have been used in the prevention and treatment of different diseases associated with oxidative stress. Aiming to improve the antioxidant effects of resveratrol and curcumin, lipid-core nanocapsules containing the combination of both polyphenols were developed. Physicochemical characteristics were evaluated and compared to the formulations containing each polyphenol individually. Co-encapsulation did not influence nanotechnological characteristics, and all formulations presented mean diameter around 200 nm, low polydispersity index, and encapsulation efficiency close to 100%. Nanoencapsulation increases the photostability of resveratrol and curcumin, and co-encapsulation improves resveratrol photostability. The in vitro antioxidant activity of polyphenols against HO radicals was enhanced by nanoencapsulation, and a better effect was observed after their co-nanoencapsulation. Also, nanocapsules exhibited controlled release profile, for both polyphenols. The results showed that the strategy to co-encapsulate resveratrol and curcumin is a promising approach to improve the performance of medicines used to prevent and treat diseases associated with oxidative stress.
Collapse
Affiliation(s)
- K Coradini
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - F O Lima
- Departamento de Química, Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | - C M Oliveira
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - P S Chaves
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - M L Athayde
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | - L M Carvalho
- Departamento de Química, Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | - R C R Beck
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.
| |
Collapse
|
17
|
Lopes RB, Souza DA, Oliveira CM, Faria M. Genetic diversity and pathogenicity of Metarhizium spp. associated with the white grub Phyllophaga capillata (Blanchard) (Coleoptera: Melolonthidae) in a soybean field. Neotrop Entomol 2013; 42:436-8. [PMID: 23949866 DOI: 10.1007/s13744-013-0146-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 05/27/2013] [Indexed: 06/02/2023]
Abstract
Phyllophaga capillata (Blanchard) was recently described as a soybean pest in Brazil. The occurrence of Metarhizium spp. associated with adults and their pathogenicity were investigated. Natural prevalence of Metarhizium anisopliae was 0.51% in adults collected by light trap. Most Metarhizium isolates were identified as Metarhizium robertsii, although M. anisopliae sensu stricto and a few unidentified isolates were also found. Bioassays with representative isolates selected from different genetic groups resulted in ≤5.6% confirmed mortality against larvae and adults, suggesting low potential of microbial control of this pest by use of indigenous Metarhizium isolates.
Collapse
Affiliation(s)
- R B Lopes
- EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, W5 Norte, CEP 70770-917, Brasília, DF, Brasil
| | | | | | | |
Collapse
|
18
|
Rezende DDM, Fadini MAM, Oliveira HG, Oliveira CM, Melo JWS, Guedes RNC, Pallini A. Fitness costs associated with low-level dimethoate resistance in Phytoseiulus macropilis. Exp Appl Acarol 2013; 60:367-379. [PMID: 23435931 DOI: 10.1007/s10493-012-9654-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 12/19/2012] [Indexed: 06/01/2023]
Abstract
Phytoseiulus macropilis Banks (Acari: Phytoseiidae) is an effective predator of tetranychid mites, but there are no data on its response to pesticides. We investigated the resistance of the predatory mite P. macropilis to the acaricides abamectin and dimethoate, and we examined the fitness costs associated with resistance. Two populations were tested: one from conventional cultivation and another from an area not commercially exploited. After the application of acaricides to the predator, we determined the lethal effects of the acaricides, the instantaneous rate of population increase (r(i)), the predation on Tetranychus urticae Koch (Acari: Tetranychidae) and its ability to locate prey in an olfactometer. P. macropilis exhibited resistance to dimethoate only. The low level of resistance (9.4x) of the predator did not affect their ability to locate prey. However, the dimethoate resistant population was not as effective in contatining prey population when in lower density and exhibited a more pronounced decrease of r(i) in the presence of this acaricide, due to the reduced oviposition of the predator, a likely consequence of the different genetic background of this population.
Collapse
Affiliation(s)
- D D M Rezende
- Departamento de Agronomia; Entomologia, Universidade Federal Rural de Pernambuco, Av. Dom Manoel de Medeiros s/n, Dois Irmãos, Recife, PE 52171-900, Brazil.
| | | | | | | | | | | | | |
Collapse
|
19
|
Macedo IC, Medeiros LF, Oliveira C, Oliveira CM, Rozisky JR, Scarabelot VL, Souza A, Silva FR, Santos VS, Cioato SG, Caumo W, Torres ILS. Cafeteria diet-induced obesity plus chronic stress alter serum leptin levels. Peptides 2012; 38:189-96. [PMID: 22940203 DOI: 10.1016/j.peptides.2012.08.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 08/10/2012] [Accepted: 08/10/2012] [Indexed: 12/19/2022]
Abstract
Obesity is a disease that has become a serious public health issue worldwide, and chronic stressors, which are a problem for modern society, cause neuroendocrine changes with alterations in food intake. Obesity and chronic stress are associated with the development of cardiovascular diseases and metabolic disorders. In this study, a rat model was used to evaluate the effects of a hypercaloric diet plus chronic restraint stress on the serum leptin and lipids levels and on the weight of specific adipose tissue (mesenteric, MAT; subcutaneous, SAT and visceral, VAT). Wistar rats were divided into the following 4 groups: standard chow (C), hypercaloric diet (HD), stress plus standard chow (S), and stress plus hypercaloric diet (SHD). The animals in the stress groups were subjected to chronic stress (placed inside a 25 cm × 7 cm plastic tube for 1h per day, 5 days per week for 6 weeks). The following parameters were evaluated: the weight of the liver, adrenal glands and specific adipose tissue; the delta weight; the Lee index; and the serum levels of leptin, corticosterone, glucose, total cholesterol, and triglycerides. The hypercaloric diet induced obesity in rats, increasing the Lee index, weight, leptin, triglycerides, and cholesterol levels. The stress decreased weight gain even in animals fed a hypercaloric diet but did not prevent a significant increase in the Lee index. However, an interaction between the independent factors (hypercaloric diet and stress) was observed, which is demonstrated by the increased serum leptin levels in the animals exposed to both protocols.
Collapse
Affiliation(s)
- I C Macedo
- Department of Pharmacology, Universidade Federal do Rio Grande do Sul Institute of Basic Health Sciences, Porto Alegre, RS, Brazil
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Muramoto C, Sterman FA, Hagen SC, Pinto ACBF, Oliveira CM, Faustino M, Talib MS, Torres LN. Avaliação ultrassonográfica de linfonodos na pesquisa de metástases de neoplasia mamária em cadelas. Pesq Vet Bras 2011. [DOI: 10.1590/s0100-736x2011001100012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A avaliação de linfonodo, parte importante do estadiamento das neoplasias mamárias em cadelas, pode auxiliar no estabelecimento do prognóstico e na escolha da conduta terapêutica. A ultrassonografia em modo B possibilita avaliação de tamanho, contorno, borda, forma, arquitetura, ecotextura e ecogenicidade do parênquima dos linfonodos e, em modo Doppler, da quantidade e distribuição dos seus vasos internos. Este trabalho visou identificar as características ultrassonográficas mais importantes utilizadas para classificar os linfonodos em metastáticos e não-metastáticos, estabelecer elementos de confiabilidade do ultrassom como ferramenta para diferenciar linfonodos metastáticos de não-metastáticos e estabelecer procedimentos de reprodução deste exame. Foram examinados 67 linfonodos inguinais superficiais de 30 cadelas com tumor mamário e cada linfonodo foi classificado como metastático ou não-metastático. A impressão diagnóstica ultrassonográfica foi associada aos resultados do exame histopato lógico dos linfonodos obtendo-se taxa de concordância de 92,5%, índice de sensibilidade de 94,1%, índice de especificidade de 92%, valor preditivo positivo de 0,8 e valor preditivo negativo de 0,9787. Características ultrassonográficas que classificaram um linfonodo como metastático ou como não-metastático foram listadas. O exame ultrassonográfico dos linfonodos regionais constitui importante ferramenta na detecção de metástase e sugere-se incluí-lo como rotina do estadiamento de neoplasias mamárias em cadelas.
Collapse
|
21
|
Oliveira CM, Dantas ALA, Dantas BM. A methodology to evaluate occupational internal exposure to fluorine-18. Cell Mol Biol (Noisy-le-grand) 2009; 55:29-33. [PMID: 20003809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2008] [Accepted: 10/01/2009] [Indexed: 05/28/2023]
Abstract
The objective of this work is to develop procedures for internal monitoring of (18)F to be applied in cases of possible incorporation of fluoride and (18)FDG, using in vivo and in vitro methods of measurements. The Na I (Tl) 8" x 4" scintillation detector installed at IRD-Whole Body Counter was calibrated for measurements with a whole body anthropomorphic phantom, simulating homogeneous distribution of (18)F in the body. The NaI(Tl) 3"x 3" scintillation detector installed at the IRD-Whole Body Counter was calibrated for in vivo measurements with a brain phantom inserted in an artificial skull, simulating (18)FDG incorporation. The HPGe detection system installed at the IRD-Bioassay Laboratory was calibrated for in vitro measurements of urine samples with 1 liter plastic bottles containing a standard liquid source. A methodology for bioassay data interpretation, based on standard ICRP models edited with the software AIDE-version 6, was established. It is concluded that in vivo measurements have sufficient sensitivity for monitoring (18)F in the forms of fluoride and (18)FDG. The use of both in vitro and in vivo bioassay data can provide useful information for the interpretation of bioassay data in cases of accidental incorporation in order to identify the chemical form of (18)F incorporated.
Collapse
Affiliation(s)
- C M Oliveira
- Instituto de Radioproteção e Dosimetria, Comissão Nacional de Energia Nuclear Av. Salvador Allende - CEP 22780-160, Rio de Janeiro, RJ, Brasil
| | | | | |
Collapse
|
22
|
Fontoura GDR, Maurer RL, Oliveira CM, Graeff-Teixeira C. Abdominal angiostrongyliasis in rodent experimental infection: evidence for systemic circulation of first stage larvae. Parasitol Int 2007; 56:227-9. [PMID: 17561438 DOI: 10.1016/j.parint.2007.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Revised: 05/10/2007] [Accepted: 05/11/2007] [Indexed: 10/23/2022]
Abstract
Eggs of Angiostrongylus costaricensis embrionate and hatch in the course of their migration in the intestinal wall, and first stage larvae (L1) are released in feces. Aiming to investigate the possible systemic circulation of L1, we inoculated mice and, four weeks later, examined their peritoneal cavities and several organs for the presence of L1. A total of 65 larvae were found in extra-intestinal organs (kidney, heart, spleen, liver, lungs). No larvae were found in blood or in the peritoneal cavity. 320 and 578 L1 were found in intestinal wall and intestinal contents, respectively. The experiment was repeated and it confirmed that the metastrongylid larvae found in several organs were larval stages of A. costaricensis. Ten Oligoryzomis sp. rodents, a natural host for A. costaricensis, were also infected and in three animals L1 could be recovered from several organs as well as from bronchoalveolar lavage (BAL) in one of them. These data indicate that systemic circulation and bronchial elimination of L1 may represent an alternative route for release of L1 of A. costaricensis into the environment for transmission to the intermediate host.
Collapse
Affiliation(s)
- G D R Fontoura
- Programa de Pos-Graduação em Ciências Veterinárias, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | | | | |
Collapse
|
23
|
Abstract
The gross and microscopical features of a glomus tumour in the digit of a 9-year-old dog are described. The tumour consisted of a red nodule near the nail of the third digit of the right forelimb and appeared painful. The tumour cells, which had round to oval hyperchromatic nuclei and scant cytoplasm, were arranged in sheets around blood vessels, or in nests or duct-like structures. This pattern has not been described previously in canine glomus tumours. Mitotic figures were seen only occasionally. Tumour cells were strongly immunolabelled for vimentin and some expressed smooth-muscle actin and desmin. They were negative for cytokeratins, neuron-specific enolase and CD34. Silver impregnation (reticulin method) stained the reticulum around blood vessels, nests of tumour cells and duct-like structures, and a delicate reticulum was seen around each tumour cell. The morphological, immunohistochemical and histochemical patterns helped in the diagnosis of this glomus tumour.
Collapse
Affiliation(s)
- M L Z Dagli
- Departamento de Patologia, Universidade de São Paulo, Avenida Professor Doutor Orlando Marques de Paiva 87, CEP 05508-900, São Paulo, SP, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Abstract
Early pregnancy diagnosis in bitches has special relevance for adequate medical assistance to assure normal gestation, diagnosis of abortion or embryonic resorption, undesirable pregnancy interruption and dog owners wishing to assure medical assistance during parturition and to program participation of females in dog shows. The aim of this study was to verify acute-phase protein profile variation as a consequence of generalized inflammatory reaction due to embryonic endometrial invasion and use alterations as a method for early pregnancy diagnosis. Also the relationship between hormonal status and acute-phase proteins concentrations was assessed. Weekly serum samples were collected from 20 non-pregnant (NP) bitches and 20 pregnant females (P) to determine levels of fibrinogen, haptoglobin, ceruloplasmin, seromucoid, glycoprotein, alpha(2) globulin, progesterone and estradiol-17beta. No correlation was found between the implantation sites formed (number of pups born) and the hepatic stimulus for the acute-phase protein production. The conclusions are that acute-phase proteins can be used as an early pregnancy test for bitches from the 3rd week of gestation (14th-21st day post LH peak) for haptoglobin assay (values above 112.42 mg/dl of HbCN binding capacity), from the 4th to the 6th week (21st-42nd day post LH peak) for ceruloplasmin (values above 12.76+/-5.29 U/l), from the 4th week (21st-28th day post LH peak) for glycoprotein (values above 13.67%) and from the 4th week of gestation (21st-28th day post LH peak) for alpha(2) globulin (values above 0.61 g/dl). Fibrinogen and seromucoid increased in the P group from the 5th to the 6th week, respectively, thus not being suitable as parameters for an early pregnancy diagnosis. Relationship between ceruloplasmin and estradiol-17beta and seromucoid and progesterone were verified. For the acute-phase protein test it is important to verify bitches' healthy condition and to assure the precise mating dates to avoid false-positive and -negative results, respectively.
Collapse
Affiliation(s)
- Camila I Vannucchi
- Department of Animal Reproduction, Faculty of Veterinary Medicine, University of São Paulo, Av Prof Orlando Marques de Paiva 87, Cidade Universitaria, 05508-900, SP, São Paulo, Brazil.
| | | | | |
Collapse
|
25
|
Abstract
PURPOSE To determine social and behavioral consequences of pregnancy and how these differed according to the pregnancy outcome (live birth or abortion) 1 year after the event. METHODS This was a prospective study of two groups of young women aged 12-18 years, one attending prenatal services and the other admitted for abortion complications at the same hospital in northeast Brazil. Adolescents who gave birth were subsequently classified as having intended or unintended pregnancies, and those who aborted were divided between those who terminated their pregnancies and those who miscarried. Baseline data were collected between 1995 and 1997 from all teens who met the eligibility criteria. Information was collected through one-on-one interviews using a questionnaire that was structured and precoded. Multiple logistic regression was used to identify characteristics that predicted outcomes at 1 year. RESULTS Teens who terminated their pregnancies were the most likely to be in school or working 1 year later. They also showed the greatest increase in self-esteem. The young mothers, however, had the highest self-esteem but perceived the impact of pregnancy on their lives as being more negative than they did initially. Group affiliation was not associated with the quality of partner relationships, which tended to deteriorate over time. The young mothers used contraception at 1 year at higher rates and had experienced fewer subsequent pregnancies than the two abortion groups. CONCLUSIONS The experience of adolescent pregnancy for this group of teens produced mixed findings, some more negative than others. Interventions to decrease the adolescent's desire to have a baby will have to be tailored differently from those designed to prevent an unintended pregnancy, but both are needed.
Collapse
Affiliation(s)
- P E Bailey
- Department of Health Services Research, Family Health International, Research Triangle Park, North Carolina 27709, USA.
| | | | | | | | | | | |
Collapse
|
26
|
Miranda MF, Neves CD, Caputo E, Leal M, Gonçalves RR, Oliveira CM, Unger DA, Souza RG, Lemos JA. [Poikilodermis]. Ann Dermatol Venereol 2001; 128:551-2. [PMID: 11395658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- M F Miranda
- Service de Dermatologie, Centro de Ciências da Saúde, Universidade Federal do Pará, 1 av. Genmo Deodoro, 66055-240 Belém (PA) Brésil
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Silva-Filha MH, Regis L, Oliveira CM, Furtado AE. Impact of a 26-month Bacillus sphaericus trial on the preimaginal density of Culex quinquefasciatus in an urban area of Recife, Brazil. J Am Mosq Control Assoc 2001; 17:45-50. [PMID: 11345418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A field trial using the entomopathogen Bacillus sphaericus against Culex quinquefasciatus was conducted in a district of Recife, Brazil, an area with a high prevalence of lymphatic filariasis. In this urban area more than 2,500 Cx. quinquefasciatus breeding sites within a 1.2-km2 area were found and subsequently submitted to a long-term treatment with B. sphaericus. To evaluate the impact of treatment on the densities of Cx. quinquefasciatus preimaginal forms, 26 breeding sites, representative of the major site types found in that area, were monitored for 3 years. Parameters such as mean and maximum densities of larval population as well as the frequency of infested sites were recorded before, during, and after the trial. The level of each parameter was greatly reduced during the treatment period, particularly in the 2nd treatment year. A low density of Cx. quinquefasciatus was also maintained throughout the last year, in the absence of treatment. Analysis of the data reported here confirms B. sphaericus as a very effective larvicide against Cx. quinquefasciatus despite the optimal environmental conditions for mosquito proliferation in the urban area of Recife.
Collapse
Affiliation(s)
- M H Silva-Filha
- Departamento de Entomologia, Centro de Pesquisas Aggeu Magalhães, Fundão Oswaldo Cruz FIOCRUZ, Recife-PE, Brasil
| | | | | | | |
Collapse
|
28
|
Regis L, Oliveira CM, Silva-Filha MH, Silva SB, Maciel A, Furtado AF. Efficacy of Bacillus sphaericus in control of the filariasis vector Culex quinquefasciatus in an urban area of Olinda, Brazil. Trans R Soc Trop Med Hyg 2000; 94:488-92. [PMID: 11132372 DOI: 10.1016/s0035-9203(00)90061-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [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] Open
Abstract
The efficacy of Bacillus sphaericus 2362 against Culex quinquefasciatus was tested in 1991-94 in a major Brazilian endemic zone for bancroftian filariasis. Continuous selection pressure against the mosquito population was sustained for 18 months through treatment of 2500 potential breeding sites occurring within a 5.7-km2 urban area in the Metropolitan Region of Recife. The impact of this control intervention was evaluated by comparing entomological indices with those from an untreated area. Application of the larvicide kept the Cx. quinquefasciatus population density significantly lower when compared to the untreated area, despite some operational difficulties. Adult densities remained lower for at least 5 months after spraying ceased. Pre-trial microfilaria rates from the untreated and operational area were 13.1% and 7.2%, respectively. A 60% reduction in human exposure to infective bites was recorded as a consequence of this vector population control.
Collapse
Affiliation(s)
- L Regis
- Departamento de Entomologia, Centro de Pesquisas Aggeu Magalhães-FIOCRUZ, Cx. Postal 7472 CEP 50670-420, Recife PE, Brazil.
| | | | | | | | | | | |
Collapse
|
29
|
Costa TR, Fernandes OF, Santos SC, Oliveira CM, Lião LM, Ferri PH, Paula JR, Ferreira HD, Sales BH, Silva M do R. Antifungal activity of volatile constituents of Eugenia dysenterica leaf oil. J Ethnopharmacol 2000; 72:111-7. [PMID: 10967461 DOI: 10.1016/s0378-8741(00)00214-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The essential oil from the hydrodistillation of Eugenia dysenterica leaves consisted mainly of beta-caryophyllene and alpha-humulene as the major sesquiterpene, while limonene and alpha-thujene were the major monoterpene hydrocarbons. The main oxygenated mono and sesquiterpene constituents were alpha-terpineol and beta-caryophyllene oxide, respectively. The oil was investigated against eight strains of Candida albicans, 35 strains of Cryptococcus neoformans var. neoformans, and two C. neoformans var. gattii isolated from HIV-infected individuals with candidosis or cryptococcal meningitis using the agar dilution method. Based on the minimal inhibitory concentration (MIC) values, the most significant results were obtained against Cryptococcus strains. It was observed that 22 strains were inhibited at a concentration of 250 microg/ml, whereas four exhibited potent inhibition with MIC values below 125 microg/ml against 10(6) UFC/ml organisms. We found MICs > or = 3.12 microg/ml for 91.6, 50 and 30% of all Cryptococcus strains in relation of amphotericin B, fluconazole and itraconazole, respectively.
Collapse
Affiliation(s)
- T R Costa
- Departamento de Microbiologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, 74605-050 Goiânia, GO, Brazil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Ferreira-DaSilva CT, Gombarovits ME, Masuda H, Oliveira CM, Carlini CR. Proteolytic activation of canatoxin, a plant toxic protein, by insect cathepsin-like enzymes. Arch Insect Biochem Physiol 2000; 44:162-171. [PMID: 10918311 DOI: 10.1002/1520-6327(200008)44:4<162::aid-arch3>3.0.co;2-#] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Canatoxin is a protein isolated from jackbean (Canavalia ensiformis), seeds. Injected intraperitoneally, the toxin is lethal to mice but it is inactive if given orally. Canatoxin is also lethal when fed to insects with cathepsin-based digestion while insects with trypsin-based digestion are not affected. The hypothesis that canatoxin is proteolytically activated by cathepsins was investigated. Experiments were performed with 4(th) instar and adult Rhodnius prolixus fed meals containing canatoxin (2.5 microg/mg weight body). While 100% of nymphs died, no effect was observed in adults. Hemolymph taken from nymphs and adults showed the presence of canatoxin's proteolytic fragments. Reduced lethality was seen in R. prolixus 4(th) instars fed meals containing canatoxin and inhibitors of cathepsin enzymes, E-64 (2.0 microM) or Pepstatin-A (2. 0 microM). In another approach, canatoxin was digested in vitro with enzymes from the bruchid, Callosobruchus maculatus, and the resulting peptides were tested in R. prolixus. Three groups of toxic peptides (8,000-12,000 kD range) were separated by gel-filtration. When these peptides were fed to the insects simultaneously with the cathepsin inhibitors, no protective effect was seen. These results confirm the proteolytic activation of canatoxin by insect cathepsin-like enzymes to produce entomotoxic peptide(s). Furthermore, our data point towards overlooked differences in the digestive physiology of distinct life stages of R. prolixus. Arch.
Collapse
Affiliation(s)
- C T Ferreira-DaSilva
- Graduate Programe in Cellular and Molecular Biology, Center of Biotechnology, and Department of Biophysics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | | | | | | |
Collapse
|
31
|
Oliveira CM. [Stress and coping: and nursing training?]. Servir 1998; 46:288-96. [PMID: 12029781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
|
32
|
Inomoto MM, Oliveira CM, Mazzafera P, Goncalves W. Effects of Pratylenchus brachyurus and P. coffeae on Seedlings of Coffea arabica. J Nematol 1998; 30:362-367. [PMID: 19274229 PMCID: PMC2620307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
Two experiments were carried out to evaluate the effects of Pratylenchus brachyurus and P. coffeae on Coffea arabica. The first experiment was conducted in a greenhouse to determine the effects of Pratylenchus brachyurus and P. coffeae on seedlings of Coffea arabica cv. Mundo Novo. Both Pratylenchus spp. reduced the growth of coffee seedlings. Higher contents of soluble sugars were detected in the leaves of infected plants. The reproduction rate of P. brachyurus was very low on cv. Mundo Novo, indicating an intolerance to this nematode. In a second experiment, C. arabica cultivars Mundo Novo and Catuaf both were intolerant hosts of P. brachyurus.
Collapse
|
33
|
Fragoso YD, da Fonseca PL, Fortinguerra MB, Cominato L, Matte GDO, Oliveira CM. Management of primary headache in emergency services of Santos and surrounding towns. SAO PAULO MED J 1998; 116:1650-3. [PMID: 9778883 DOI: 10.1590/s1516-31801998000200002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVES Primary headaches are often seen by Clinicians on duty at Emergency Services. We have investigated the treatment of such patients by 43 medical doctors who have been working at Emergency Services in the city of Santos and surrounding towns for many years. RESULTS We confirmed the high prevalence of primary headaches in Emergency Services. There seem to be diagnosis difficulties concerning differentiating attacks of migraine and tension type headache. We also observed that IV dipirone was the most frequently prescribed treatment for patients with primary headaches in this study. There is no protocol in the literature which recommends IV dipirone for the treatment of migraine attacks or other primary headaches. CONCLUSION It would be advisable to perform controlled double blind studies in order to verify the advantages of IV dipirone in the treatment of intense attacks primary headaches. We concluded that headache management recycling programs could be of interest for doctors who regularly work at Emergency Services.
Collapse
Affiliation(s)
- Y D Fragoso
- Department of Internal Medicine, Faculdade de Ciências Médicas de Santos, São Paulo, Brazil.
| | | | | | | | | | | |
Collapse
|
34
|
Oliveira CM, Rebelo MJ, Camões MF. Effect of different experimental parameters on the potentiometric evaluation of blood electrolytes using K+ as a test cation. Analyst 1996; 121:1907-10. [PMID: 9008407 DOI: 10.1039/an9962101907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 02/03/2023]
Abstract
Potentiometric evaluation of ionic concentrations in physiological media has been reported to be significantly affected by the albumin containing matrix. Previous studies have attempted to clarify the origin of different patterns of variation of E versus albumin concentration at a constant 0.01 mol dm-3 KCl, depending on the experimental methodologies. This paper reports on measurements of K+ in albumin (BSA) containing KCl solutions, which have been pursued following different methodologies concerning the sequence of measurements, i.e., starting either from the most concentrated solution (100 g dm-3) (A) or from the most dilute solution (20 g dm-3) (B), and solution preparation, (a) dilution of an initial 100 g dm-3 albumin solution by successive addition of 0.01 mol dm-3 KCl, (b) concentration of an initial 20 g dm-3 albumin solution by addition of solid substance, (c) independent preparation of each albumin solution (20, 40, 60, 80 and 100 g dm-3) or (d) preparation of each albumin solution from direct dilution of a 100 g dm-3 stock solution with 0.01 mol dm-3 KCl. Convenient calculations were made and showed a significant contribution of albumin to the liquid-liquid junction potential. The variation of potential with albumin concentration is smaller for hypertonic than for isotonic bridge solutions, both for the dilution series (A,a and A,d) and for the concentration series (B,c and B,d). When the method for increasing the concentration is performed by addition of a solid substance to an initially diluted albumin (B,b), the slope of the E versus albumin concentration plot is larger for hypertonic than for isotonic reference electrolytes. This latter finding is in agreement with Payne's results when ultrafiltration was used to concentrate a protein solution. These observations are a clear indication that the method of preparation of concentrated protein solutions may significantly affect the results.
Collapse
Affiliation(s)
- C M Oliveira
- CECUL-Centro de Electroquímica e Cinética de Universidade de Lisboa, Portugal
| | | | | |
Collapse
|
35
|
Abstract
Two prophylactic studies and one persistent efficacy study were conducted in Brazil to evaluate one injection of doramectin at a dose rate of 200 micrograms kg-1 against induced infestations of the New World screwworm, Cochliomyia hominivorax. In each prophylactic study, 12 calves were allocated to two groups of six animals. Six calves were treated with doramectin and six with saline. Two hours after treatment, animals were anesthetized and received two incisions, one in the shoulder and one in the rump. Each incision was then infested with 50 first instar larvae. In the persistent efficacy study, 24 calves were allocated to six groups (T1-T6) of four animals each. On the day of treatment, three groups (T1, T3 and T5) were treated with saline and three groups (T2, T4 and T6) with doramectin. All animals were anesthetized and received four incisions, one in the shoulder and one in the rump of each side. Each incision was then infested with 30 first instar larvae of C. hominivorax with the following schedule: T1 and T2 at Day 3, T3 and T4 at Day 7, and T5 and T6 at Day 14 post-treatment. Calves were observed daily and incisions evaluated for 8 days post-infection. Larvae that completed development and exited the wounds were collected and incubated to evaluate viability. In all experiments, doramectin was 100% efficacious in preventing screwworm infestation caused by field isolates of C. hominivorax. First instar larvae were eliminated from the incisions of doramectin-treated calves between 24 and 48 h post-treatment, and no third instar were recovered at any time. As a consequence, healing started at 24 h and was completed at 96-120 h post-infection. Screwworm infestations and viable third-instar larvae developed in all the incisions in non-treated calves, and healing did not begin until larvae had completed their normal life cycle and exited the wounds. The persistent efficacy of a single injection of doramectin extended beyond 14 days.
Collapse
|
36
|
Abstract
The essential role of Factor VIII:C (FVIII:C, anti-hemophilia factor A) as a cofactor for Factor IXa-dependent activation of Factor X has been established. In this paper, we describe that capillary endothelial cells from bovine adrenal medulla express active FVIII:C gene. Accumulation of FVIII:C in conditioned media from an 8-day-old culture is approximately twice as high as that stored in the cell when immunoprecipitated FVIII:C was analyzed for its ability to convert Factor X to Factor Xa. Analysis of [35S]methionine-labeled and immunoprecipitated FVIII:C from cells or conditioned media on SDS-PAGE under fully denatured conditions indicated that the newly synthesized FVIII:C consists of heavy chain of M(r) 200,000 and light chain of M(r) 46,000. The secreted FVIII:C in the non-reduced condition however, has a molecular weight of 270,000 which suggests that in native protein, the heavy and light chains are held together by S-S bonds. Furthermore, susceptibility of the immunoprecipitated FVIII:C to N-glycanase digestion establishes that the endothelial cells derived FVIII:C contains asparagine-linked carbohydrate side chains.
Collapse
Affiliation(s)
- D K Banerjee
- Department of Biochemistry and Nutrition, School of Medicine, University of Puerto Rico, San Juan 00936-5067
| | | | | |
Collapse
|
37
|
Abstract
In vitro studies of angiogenic phenomenon have been limited due to nonavailability of a simple and biologically relevant model of the capillary wall. Recent development of a capillary endothelial cell line from the vascular bed of bovine adrenal medulla made us to study the effect of heparin, thrombin, thyroxine, glucagon, insulin, and phorbol myristate acetate (PMA) on the proliferative and metabolic activities such as glycosylation of asparagine-linked glycoproteins of these cells in culture. Out of six different agents studied here, only heparin, thrombin, and thyroxine reduced the doubling time of these cells by 24 hr with no observed morphological abnormality. Glucagon, showed marginal reduction in the cell doubling time. By contrast, insulin and PMA enhanced the doubling time. Insulin treatment though induced the S phase of cell cycle but it blocked the cells entry into the G2 + M phase. PMA arrested the cells in G0/G1 phase. The cellular response to protein N-glycosylation is increased in the presence of thyroxine, insulin, and thrombin and the effect is dose dependent. Further analysis on SDS-PAGE indicated that glycosylation of 80-120 kDa and 43 kDa glycoprotein species are enhanced when these cells are treated with insulin and thrombin. Glycopeptide generated from these glycoproteins suggested that they all carry "high mannose" and "complex" type oligosaccharide chains attached to their protein core.
Collapse
Affiliation(s)
- C M Oliveira
- Department of Biochemistry and Nutrition, School of Medicine, University of Puerto Rico, San Juan
| | | |
Collapse
|
38
|
Figueiredo AM, Benchetrit LC, Borges-Neto AA, Oliveira CM. Evaluation of the El Kholy technique for grouping beta-hemolytic streptococci. Rev Bras Pesqui Med Biol 1980; 13:21-24. [PMID: 7414023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
One hundred and eleven strains of beta-hemolytic streptococci of human origin were grouped by the new nitrous acid procedure described by El Kholy et al. The results were comparable to the grouping obtained by the classical Lancefield hot-hydrochloric acid method. The El Kholy technique is simple and economic and is shown to be as sensitive and specific as the Lancefield procedure. We recommend the new method for routine use in the clinical laboratory and in studies on the prevalence of Streptococcus pyogenes in a developing country such as Brazil.
Collapse
|