1
|
da Silva Costa N, de Araujo JR, da Silva Melo MF, da Costa Mota J, Almeida PP, Coutinho-Wolino KS, Da Cruz BO, Brito ML, de Souza Carvalho T, Barreto-Reis E, de Luca BG, Mafra D, Magliano D'AC, de Souza Abboud R, Rocha RS, da Cruz AG, de Toledo Guimarães J, Stockler-Pinto MB. Effects of Probiotic-Enriched Minas Cheese (Lactobacillus acidophilus La-05) on Cardiovascular Parameters in 5/6 Nephrectomized Rats. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10173-4. [PMID: 37917394 DOI: 10.1007/s12602-023-10173-4] [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] [Accepted: 10/06/2023] [Indexed: 11/04/2023]
Abstract
Dairy foods have become an interest in chronic kidney disease (CKD) due to their nutritional profile, which makes them a good substrate for probiotics incorporation. This study evaluated the effect of probiotic-enriched Minas cheese with Lactobacillus acidophilus La-05 in an experimental rat model for CKD on cardiac, inflammatory, and oxidative stress parameters. Male Wistar rats were divided into 4 groups (n = 7/group): 5/6 nephrectomy + conventional Minas cheese (NxC); 5/6 nephrectomy + probiotic Minas cheese (NxPC); Sham + conventional Minas cheese (ShamC); Sham + probiotic Minas cheese (ShamPC). Offering 20 g/day of Minas cheese with Lact. acidophilus La-05 (108-109 log CFU/g) for 6 weeks. The cardiomyocyte diameter was determined. Superoxide dismutase (SOD) activity in plasma, heart, kidney, and colon tissue was performed. At the end of supplementation, no significant changes in lipid profile and renal parameters were found. The NxPC group showed a decrease in cardiomyocyte diameter compared to the NxC group (16.99 ± 0.85 vs. 19.05 ± 0.56 μm, p = 0.0162); also they showed reduced plasmatic SOD activity (502.8 ± 49.12 vs. 599.4 ± 94.69 U/mL, p < 0.0001). In summary, probiotic-enriched Minas cheese (Lact. acidophilus La-05) consumption suggests a promisor cardioprotective effect and was able to downregulate SOD activity in a rat model of CKD.
Collapse
Affiliation(s)
- Nathalia da Silva Costa
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil.
| | - Joana Ramos de Araujo
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil.
| | | | | | | | | | - Beatriz Oliveira Da Cruz
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Michele Lima Brito
- Graduate Program in Pathology, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Thaís de Souza Carvalho
- Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, RJ, Brazil
| | - Emanuelle Barreto-Reis
- Graduate Program in Pathology, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, RJ, Brazil
| | - Beatriz Gouvêa de Luca
- Graduate Program in Pathology, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, RJ, Brazil
| | - Denise Mafra
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - D 'Angelo Carlo Magliano
- Graduate Program in Pathology, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, RJ, Brazil
| | - Renato de Souza Abboud
- Morphology Department, Laboratory of Cellular and Extracellular Biomorphology Biomedic Institute, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Ramon Silva Rocha
- Veterinary Hygiene and Technical Processing of Animal Products Post Graduate Program, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Adriano Gomes da Cruz
- Veterinary Hygiene and Technical Processing of Animal Products Post Graduate Program, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Food Department, Federal Institute of Education, Science and Technology of Rio de Janeiro (IFRJ), Rio de Janeiro, RJ, Brazil
| | - Jonas de Toledo Guimarães
- Food Technology Department, Veterinary College, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Milena Barcza Stockler-Pinto
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Nutrition Faculty, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Graduate Program in Pathology, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| |
Collapse
|
2
|
Silva SF, Rocha RS, Esmerino EA, Pimentel TC, Gomes da Cruz A, Rodrigues Anjos CA. Impact of different modified atmosphere packaging on quality parameters and probiotic survival during storage of Minas Frescal cheese. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
Rocha RS, de Carvalho VG, Galvão M, de Souza MY, Caneppele T, Bresciani E. Perceptibility and Acceptability of Surface Gloss Variation Under Different Illuminants. Oper Dent 2021; 46:E98-E104. [PMID: 34157107 DOI: 10.2341/20-011-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2020] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE The influence of different illuminants on the perception and acceptance of surface gloss variation in composite resins remains unclear but is important if restorations are to mimic natural teeth. SUMMARY Objective: The purpose of this study was to evaluate the influence of different illuminants on the perceptibility and acceptability of surface gloss variations and to determine limiting values.Methods: Eight composite resin specimens and one human tooth specimen were polished to obtain composite resin specimens with different gloss units (GU) of 10, 20, 30, 40, 50, 60, 70, and 80 and a human tooth specimen of 80 GU. Sixty observers compared the surface gloss of the specimens in a light booth. For perceptibility testing, the specimens were randomly positioned two at a time. The acceptability of the gloss variation was determined by comparing the composite resin specimens with the tooth specimen. The observers answered specific questions to determine the level and perceptibility and acceptability limits of gloss variations. All analysis was done with two illuminants (D65 and fluorescent light) used randomly. Data were submitted to a nonlinear probit model and nonlinear probit regression estimation (α=0.05).Results: Significant differences in illuminants were observed for perceptibility (p<0.001) and acceptability (p=0.045). The perceptibility limit for D65 was 7.0 GU and 6.8 GU for fluorescent illuminant. The acceptability limit for D65 was 34.2 GU and 37.1 GU for fluorescent illuminant.Conclusions: More accurate perceptibility and acceptability judgments of the surface gloss of composite resin were made when the specimens were illuminated with D65 light.
Collapse
|
4
|
Rasika DMD, Vidanarachchi JK, Rocha RS, Balthazar CF, Cruz AG, Sant’Ana AS, Ranadheera CS. Plant-based milk substitutes as emerging probiotic carriers. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2020.10.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
5
|
Fidelis M, Santos JS, Escher GB, Rocha RS, Cruz AG, Cruz TM, Marques MB, Nunes JB, do Carmo MAV, de Almeida LA, Kaneshima T, Azevedo L, Granato D. Polyphenols of jabuticaba [Myrciaria jaboticaba (Vell.) O.Berg] seeds incorporated in a yogurt model exert antioxidant activity and modulate gut microbiota of 1,2-dimethylhydrazine-induced colon cancer in rats. Food Chem 2021; 334:127565. [PMID: 32717686 DOI: 10.1016/j.foodchem.2020.127565] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 05/19/2020] [Revised: 07/01/2020] [Accepted: 07/09/2020] [Indexed: 12/15/2022]
Abstract
The chemical composition, antioxidant activity (AA), cytotoxic activity, antihemolytic effects, and enzyme inhibition (EI) of lyophilized jabuticaba (Myrciaria jaboticaba) seed extract (LJE) was studied. The main compounds found were castalagin, vescalagin, procyanidin A2, and ellagic acid. LJE was more toxic to cancer cells than to normal cells, meaning relative toxicological safety. This cytotoxic effect can be attributed to the pro-oxidant effect observed in the reactive oxygen species (ROS) generation assay. LJE inhibited α-amylase, α-glucosidase, and ACE-I activities and protected human erythrocytes from hemolysis. LJE was incorporated into yogurts at different concentrations and the total phenolic content, AA, and EI increased in a dose-dependent manner. LJE-containing yogurt presented 86% sensory acceptance. The yogurt was administered to Wistar rats bearing cancer and it modulated the gut bacterial microbiota, having a prebiotic effect. LJE is a potential functional ingredient for food companies looking for TPC, AA, and prebiotic effect in vivo.
Collapse
Affiliation(s)
- Marina Fidelis
- Department of Food Engineering, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Brazil
| | - Jânio Sousa Santos
- Department of Food Engineering, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Brazil
| | - Graziela Bragueto Escher
- Department of Food Engineering, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Brazil
| | - Ramon Silva Rocha
- Federal Institute of Education, Science and Technology from Rio de Janeiro (IFRJ), 20270-021 Rio de Janeiro, Brazil
| | - Adriano Gomes Cruz
- Federal Institute of Education, Science and Technology from Rio de Janeiro (IFRJ), 20270-021 Rio de Janeiro, Brazil
| | - Thiago Mendanha Cruz
- Department of Chemistry, State University of Ponta Grossa, 84030-900, Ponta Grossa, Brazil
| | | | - Juliana Barbosa Nunes
- Department of Pathology, College of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Leonardo Augusto de Almeida
- Department of Microbiology and Immunology, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil
| | - Tai Kaneshima
- Department of Nutritional Science and Food Safety, Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Luciana Azevedo
- Faculty of Nutrition, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000, Alfenas, Brazil.
| | - Daniel Granato
- Department of Food Engineering, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Brazil; Food Processing and Quality, Innovative Food System, Production Systems Unit, Natural Resources Institute Finland (Luke), Tietotie 2, FI-02150 Espoo, Finland.
| |
Collapse
|
6
|
Fidelis M, de Oliveira SM, Sousa Santos J, Bragueto Escher G, Silva Rocha R, Gomes Cruz A, Araújo Vieira do Carmo M, Azevedo L, Kaneshima T, Oh WY, Shahidi F, Granato D. From byproduct to a functional ingredient: Camu-camu (Myrciaria dubia) seed extract as an antioxidant agent in a yogurt model. J Dairy Sci 2020; 103:1131-1140. [DOI: 10.3168/jds.2019-17173] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 10/11/2019] [Indexed: 02/05/2023]
|
7
|
Grom LC, Rocha RS, Balthazar CF, Guimarães JT, Coutinho NM, Barros CP, Pimentel TC, Venâncio EL, Collopy Junior I, Maciel PMC, Silva PHF, Granato D, Freitas MQ, Esmerino EA, Silva MC, Cruz AG. Postprandial glycemia in healthy subjects: Which probiotic dairy food is more adequate? J Dairy Sci 2019; 103:1110-1119. [PMID: 31785881 DOI: 10.3168/jds.2019-17401] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [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: 08/04/2019] [Accepted: 10/07/2019] [Indexed: 02/02/2023]
Abstract
The consumption of probiotic-enriched dairy products has been associated with many health benefits, including anti-hyperglycemic activity. The effect on health is dependent on the type of probiotic culture used and the dairy product consumed. This study evaluated the effect of different probiotic-enriched dairy matrices (Minas Frescal cheese, Prato cheese, and whey dairy beverage) containing Lactobacillus casei on in vitro and in vivo anti-hyperglycemic activity. For this purpose, in vitro anti-hyperglycemic activity was determined by the inhibition of α-glucosidase and α-amylase activities, and a human study was performed with healthy individuals (n = 15, consumption of bread as a control; bread + Minas Frescal cheese; bread + Prato cheese; bread + dairy beverage) to assess the effects of different probiotic foods on postprandial glycemia. In vitro data showed that Prato cheese presented the highest lipid (36.9 g/100 g) and protein (26.5 g/100 g) contents as well as the highest α-amylase (60.7%) and α-glucosidase (52.6%) inhibition. The consumption of Prato cheese resulted in a lesser increase in blood glucose level (13 mg/dL) compared with the consumption of bread alone (19 mg/dL), Minas Frescal cheese (20 mg/dL), and whey dairy beverage (30 mg/dL), with glycemic indices similar to that observed for the control. The present results demonstrated a good correlation between in vitro and in vivo data, in which the type of dairy matrix affects the anti-hyperglycemic activity. It is concluded that the consumption of probiotic Prato cheese can contribute to the reduction of postprandial glycemia in healthy individuals.
Collapse
Affiliation(s)
- L C Grom
- Departamento de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), 20270-021, Rio de Janeiro, Brazil
| | - R S Rocha
- Departamento de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), 20270-021, Rio de Janeiro, Brazil; Faculdade de Medicina Veterinária, Universidade Federal Fluminense (UFF), 24230-340, Niterói, Brazil
| | - C F Balthazar
- Faculdade de Medicina Veterinária, Universidade Federal Fluminense (UFF), 24230-340, Niterói, Brazil
| | - J T Guimarães
- Faculdade de Medicina Veterinária, Universidade Federal Fluminense (UFF), 24230-340, Niterói, Brazil
| | - N M Coutinho
- Faculdade de Medicina Veterinária, Universidade Federal Fluminense (UFF), 24230-340, Niterói, Brazil
| | - C P Barros
- Faculdade de Medicina Veterinária, Universidade Federal Fluminense (UFF), 24230-340, Niterói, Brazil
| | - T C Pimentel
- Instituto Federal do Paraná (IFPR), Paranavaí, 87703-536, Paraná, Brazil
| | - E L Venâncio
- Departamento de Farmácia, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), 21715-000, Rio de Janeiro, Brazil
| | - I Collopy Junior
- Departamento de Farmácia, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), 21715-000, Rio de Janeiro, Brazil
| | - P M C Maciel
- Departamento de Farmácia, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), 21715-000, Rio de Janeiro, Brazil
| | - P H F Silva
- Departamento de Nutrição, Universidade Federal de Juiz de Fora (UFJF), 36036-330, Juiz de Fora, Brazil
| | - D Granato
- Innovative Food System, Production Systems Unit, Natural Resources Institute Finland (LUKE), Innovation Open House, Maarintie 6, FI-02150 Espoo, Finland
| | - M Q Freitas
- Faculdade de Medicina Veterinária, Universidade Federal Fluminense (UFF), 24230-340, Niterói, Brazil
| | - E A Esmerino
- Faculdade de Medicina Veterinária, Universidade Federal Fluminense (UFF), 24230-340, Niterói, Brazil
| | - M C Silva
- Departamento de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), 20270-021, Rio de Janeiro, Brazil
| | - A G Cruz
- Departamento de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), 20270-021, Rio de Janeiro, Brazil.
| |
Collapse
|
8
|
Abstract
OBJECTIVE To assess the visual perception of observers regarding perceptibility and acceptability of surface gloss variations of resin composites and to determine the limit of perceptibility and acceptability of gloss variations. METHODS Eight resin composite specimens and one human tooth specimen were fabricated. The resin specimens were polished to reach a surface gloss, in gloss units (GUs), of 10 GU, 20 GU, 30 GU, 40 GU, 50 GU, 60 GU, 70 GU, and 80 GU, and the human tooth specimen had a surface gloss of 80 GU. Sixty observers were selected to compare the surface gloss of the specimens in a light booth. For the perceptibility assessment, specimens were randomly displayed two at a time. Each observer performed a total of 144 observations. Observers answered two specific questions for determining the level and limit of perceptibility of gloss variations. The acceptability limit of gloss was determined by comparing the resin specimens with the tooth specimen. The observations were performed with dental practice scenarios (illuminant conditions, visualization field, and observers' education). Data were submitted to a nonlinear probit model and nonlinear regression estimation probit (5%). RESULTS Differences in perceptibility and acceptability were observed for surface gloss variations (ΔGU) (p<0.001). Perceptibility increased with ΔGU (10<20<30<40<50=60=70), while acceptability decreased with ΔGU (0=10>20>30>40>50>60=70). Acceptability and perceptibility limits were 6.4 GU and 35.7 GU, respectively. CONCLUSIONS Perceptibility and acceptability of surface gloss are influenced by gloss variations. A variation of 6.4 GU was required for 50% of observers to notice gloss variations. Concerning acceptability, observers required a variation of 35.7 GU to consider differences in gloss not acceptable.
Collapse
|
9
|
Verruck S, Balthazar CF, Rocha RS, Silva R, Esmerino EA, Pimentel TC, Freitas MQ, Silva MC, da Cruz AG, Prudencio ES. Dairy foods and positive impact on the consumer's health. Adv Food Nutr Res 2019; 89:95-164. [PMID: 31351531 DOI: 10.1016/bs.afnr.2019.03.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The objective of the present chapter was to demonstrate the state of the art in the recent advances in nutritional and functional components of dairy products research. In this chapter, the main mechanisms responsible and essential for a better understanding of nutritional and functional values of the components of milk and dairy products are highlighted. It also includes a discussion about the positive impacts of fermented milk, cheese, butter, ice cream, and dairy desserts components on the consumer's health.
Collapse
Affiliation(s)
- Silvani Verruck
- Universidade Federal de Santa Catarina (UFSC), Departamento de Ciência e Tecnologia de Alimentos, Florianópolis, Brazil
| | | | - Ramon Silva Rocha
- Universidade Federal Fluminense (UFF), Faculdade de Veterinária, Niterói, Brazil; Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Departamento de Alimentos, Rio de Janeiro, Brazil
| | - Ramon Silva
- Universidade Federal Fluminense (UFF), Faculdade de Veterinária, Niterói, Brazil; Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Departamento de Alimentos, Rio de Janeiro, Brazil
| | | | | | | | - Marcia Cristina Silva
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Departamento de Alimentos, Rio de Janeiro, Brazil
| | - Adriano Gomes da Cruz
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Departamento de Alimentos, Rio de Janeiro, Brazil.
| | - Elane Schwinden Prudencio
- Universidade Federal de Santa Catarina (UFSC), Departamento de Ciência e Tecnologia de Alimentos, Florianópolis, Brazil
| |
Collapse
|
10
|
Granato D, Putnik P, Kovačević DB, Santos JS, Calado V, Rocha RS, Cruz AGD, Jarvis B, Rodionova OY, Pomerantsev A. Trends in Chemometrics: Food Authentication, Microbiology, and Effects of Processing. Compr Rev Food Sci Food Saf 2018; 17:663-677. [PMID: 33350122 DOI: 10.1111/1541-4337.12341] [Citation(s) in RCA: 246] [Impact Index Per Article: 41.0] [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: 11/29/2017] [Revised: 01/25/2018] [Accepted: 01/26/2018] [Indexed: 11/27/2022]
Abstract
In the last decade, the use of multivariate statistical techniques developed for analytical chemistry has been adopted widely in food science and technology. Usually, chemometrics is applied when there is a large and complex dataset, in terms of sample numbers, types, and responses. The results are used for authentication of geographical origin, farming systems, or even to trace adulteration of high value-added commodities. In this article, we provide an extensive practical and pragmatic overview on the use of the main chemometrics tools in food science studies, focusing on the effects of process variables on chemical composition and on the authentication of foods based on chemical markers. Pattern recognition methods, such as principal component analysis and cluster analysis, have been used to associate the level of bioactive components with in vitro functional properties, although supervised multivariate statistical methods have been used for authentication purposes. Overall, chemometrics is a useful aid when extensive, multiple, and complex real-life problems need to be addressed in a multifactorial and holistic context. Undoubtedly, chemometrics should be used by governmental bodies and industries that need to monitor the quality of foods, raw materials, and processes when high-dimensional data are available. We have focused on practical examples and listed the pros and cons of the most used chemometric tools to help the user choose the most appropriate statistical approach for analysis of complex and multivariate data.
Collapse
Affiliation(s)
- Daniel Granato
- Dept. of Food Engineering, State Univ. of Ponta Grossa, Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Brazil
| | - Predrag Putnik
- Faculty of Food Technology and Biotechnology, Univ. of Zagreb, Pierottijeva 6, 10000, Zagreb, Croatia
| | - Danijela Bursać Kovačević
- Faculty of Food Technology and Biotechnology, Univ. of Zagreb, Pierottijeva 6, 10000, Zagreb, Croatia
| | - Jânio Sousa Santos
- Dept. of Food Engineering, State Univ. of Ponta Grossa, Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Brazil
| | - Verônica Calado
- School of Chemistry, Federal Univ. of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ramon Silva Rocha
- Dept. de Alimentos, Inst. Federal de Educação, Ciência e Tecnologia (IFRJ), 20270-021, Rio de Janeiro, Brazil
| | - Adriano Gomes Da Cruz
- Dept. de Alimentos, Inst. Federal de Educação, Ciência e Tecnologia (IFRJ), 20270-021, Rio de Janeiro, Brazil
| | - Basil Jarvis
- Dept. of Food and Nutrition Sciences, School of Chemistry, Food and Pharmacy, The Univ. of Reading, Whiteknights, Reading, Berkshire RG6 6AP, U.K
| | - Oxana Ye Rodionova
- Semenov Inst. of Chemical Physics RAS, Kosygin str. 4, 119991, Moscow, Russia
| | - Alexey Pomerantsev
- Semenov Inst. of Chemical Physics RAS, Kosygin str. 4, 119991, Moscow, Russia
| |
Collapse
|
11
|
Coles GC, Bruce JI, Kinoti GK, Mutahi WT, Dias LC, Rocha RS, Katz N. The potential for drug resistance in schistosomiasis. ACTA ACUST UNITED AC 2005; 3:349-50. [PMID: 15462884 DOI: 10.1016/0169-4758(87)90121-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
12
|
Orsini M, Rocha RS, Disch J, Katz N, Rabello A. The role of nutritional status and insulin-like growth factor in reduced physical growth in hepatosplenic Schistosoma mansoni infection. Trans R Soc Trop Med Hyg 2001; 95:453-6. [PMID: 11579895 DOI: 10.1016/s0035-9203(01)90213-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 10/26/2022] Open
Abstract
The influence of nutritional status and hormonal growth activity on the impaired somatic development of adolescents with the hepatosplenic clinical form of Schistosoma mansoni infection (HS), the intestinal form with high (IH) or low (IL) egg output and non-infected (NI) individuals was evaluated (in Comercinho, Minas Gerais State, Brazil, in 1996-97) by measuring body mass index (BMI), insulin-like growth promoting factor (IGF-I) and its carrier protein (IGFBP-3). BMI, IGF-I and IGFBP-3 concentrations were significantly lower in the HS group compared with the IH and the NI groups, irrespective of age. BMI did not remain associated with the clinical form in the bi-variate model that included IGF-I and BMI or IGFBP-3 and BMI, suggesting that in these groups IGF-I and IGFBP-3 levels were related to the clinical form but independent of nutritional status. It is suggested that physical growth impairment in hepatosplenic S. mansoni infection results from the synergistic action of both hepatic damage and nutritional restriction.
Collapse
Affiliation(s)
- M Orsini
- Laboratório de Pesquisas Clínicas and Laboratório de Esquistossomose, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, FIOCRUZ, Belo Horizonte, Brazil.
| | | | | | | | | |
Collapse
|
13
|
Schall VT, Vasconcellos MC, Rocha RS, Souza CP, Mendes NM. The control of the schistosome-transmitting snail Biomphalaria glabrata by the plant Molluscicide Euphorbia splendens var. hislopii (syn milli Des. Moul): a longitudinal field study in an endemic area in Brazil. Acta Trop 2001; 79:165-70. [PMID: 11369309 DOI: 10.1016/s0001-706x(01)00126-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [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: 11/29/2022]
Abstract
Under laboratory conditions, latex from Euphorbia splendens has shown promise as a plant molluscicide for control of Biomphalaria species, intermediate hosts for Schistosoma mansoni. The purpose of this study was to evaluate its efficiency under field conditions. Application of filtered latex at 12 ppm to one stream in an endemic rural area in Minas Gerais state, Brazil, in September 1995, did result in a reduction in snail density as compared to an untreated stream but the snail population recovered quickly. However, two applications with a two-week interval of unfiltered E. splendens latex at 5 ppm in November 1996 in the same stream resulted in complete disappearance of B. glabrata and snails did not reappear until the 14th month after the applications. In the control stream, without treatment, the snails were found during all months. Laboratory studies confirmed that unfiltered latex is a more potent molluscicide than filtered latex. Considering the advantages of the latex such as its low toxicity to other aquatic animals and its photobiodegradability, as well as the simple method of application, this natural product is promising as an effective molluscicide.
Collapse
Affiliation(s)
- V T Schall
- Departamento de Biologia, Instituto Oswaldo Cruz, RJ, Rio de Janeiro, Brazil.
| | | | | | | | | |
Collapse
|
14
|
Rocha RS, Silva JG, Peixoto SV, Caldeira RL, Firmo JO, Carvalho O dos S, Katz N. [Assessment of schistosomiasis and other intestinal parasitoses in school children of the Bambuí municipality, Minas Gerais, Brazil]. Rev Soc Bras Med Trop 2000; 33:431-6. [PMID: 11064579] [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] [Indexed: 02/18/2023] Open
Abstract
This work was carried out with the purpose of determining the prevalence of intestinal parasitoses in the school children of Bambuí, through parasitological examinations (direct and Kato-Katz methods) and reevaluating the snails' breeding places described in the county. Of the 2,091 school children examined, 20.1% had at least one parasitic infection. Giardia lamblia, Entamoeba coli, Ascaris lumbricoides and hookworm are the most frequent parasites, with a prevalence of 6.2%, 6.2%, 4.8% and 1.4%, respectively. The hookworms were significantly more frequent among students from the rural area and in those aged over 14 years, while the prevalence of E. coli was greater in the urban area and the G. lamblia was more frequent in children under 6 years old. Only three children shed eggs of Schistosoma mansoni. The only intermediate host found was Biomphalaria glabrata and none of them was shedding cercariae of S. mansoni. When these data were compared with data from other surveys previously effected in the county, a decline was observed in the prevalence of all parasites. Some hypotheses which may explain this decline are discussed, such as: intense urbanization process and improvement of social-sanitary conditions of the county.
Collapse
Affiliation(s)
- R S Rocha
- Laboratório de Esquistossomose, Centro de Pesquisas René Rachou/Fundação Oswaldo Cruz (FIOCRUZ), Belo Horizonte, MG, Brasil.
| | | | | | | | | | | | | |
Collapse
|
15
|
Lima e Costa MF, Rocha RS, Firmo JO, Guerra HL, Passos VA, Katz N. Questionnaires in the screening for Schistosoma mansoni infection: a study of socio demographic and water contact variables in four communities in Brazil. Rev Inst Med Trop Sao Paulo 1998; 40:93-9. [PMID: 9755562 DOI: 10.1590/s0036-46651998000200005] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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: 11/21/2022] Open
Abstract
The use of questionnaires has been recommended for identifying, at a lower cost, individuals at risk for schistosomiasis. In this study, validity of information obtained by questionnaire in the screening for Schistosoma mansoni infection was assessed in four communities in the State of Minas Gerais, Brazil. Explanatory variables were water contact activities, sociodemographic characteristics and previous treatment for schistosomiasis. From 677, 1474, 766 and 3290 individuals eligible for stool examination in the communities, 89 to 97% participated in the study. The estimated probability of individuals to be infected, if they have all characteristics identified as independently associated with S.mansoni infection, varied from 15% in Canabrava, to 42% in Belo Horizonte, 48% in Comercinho and 80% in São José do Acácio. Our results do not support the hypothesis that a same questionnaire on risk factors could be used in screening for S.mansoni infection in different communities.
Collapse
Affiliation(s)
- M F Lima e Costa
- Laboratório de Epidemiologia e Antropologia Médica, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil.
| | | | | | | | | | | |
Collapse
|
16
|
Mendes NM, Vasconcellos MC, Baptista DF, Rocha RS, Schall VT. Evaluation of the molluscicidal properties of Euphorbia splendens var. hislopii (N.E.B.) latex: experimental test in an endemic area in the State of Minas Gerais, Brazil. Mem Inst Oswaldo Cruz 1997; 92:719-24. [PMID: 9566245 DOI: 10.1590/s0074-02761997000500029] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [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: 02/07/2023] Open
Abstract
Following the positive results obtained regarding the molluscicidal properties of the latex of Euphorbia splendens that were corroborated in laboratory and field tests under restricted conditions, a field study was conducted in experimental streams located in an endemic area. After recording the average annual fluctuations of vectors in three streams, a solution of E. splendens latex at 12 ppm was applied in stream A, a solution of niclosamide at 3 ppm that was applied in stream B and a third stream (C) remained untreated for negative control. Applications of E. splendens and niclosamide resulted in a mortality of 100% among the snails collected in the streams A and B. No dead snails were found in the negative control stream. A monthly follow-up survey conducted during three consecutive months confirmed the return of vectors to both experimental streams treated with latex and niclosamide. This fact has called for a need to repeat application in order to reach the snails that remained buried in the mud substrate or escaped to the water edge, as well as, newly hatched snails that did not respond to the concentration of these molluscicides. Adults snails collected a month following treatment led us to believe that they had migrate from untreated areas of the streams to those previously treated.
Collapse
Affiliation(s)
- N M Mendes
- Centro de Pesquisas René Rachou-FIOCRUZ, Belo Horizonte, MG, Brasil
| | | | | | | | | |
Collapse
|
17
|
Rabello AL, Garcia MM, Pinto da Silva RA, Rocha RS, Katz N. Humoral immune responses in patients with acute Schistosoma mansoni infection who were followed up for two years after treatment. Clin Infect Dis 1997; 24:304-8. [PMID: 9114177 DOI: 10.1093/clinids/24.3.304] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [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: 02/04/2023] Open
Abstract
Eighteen patients with acute Schistosoma mansoni infection were followed up for 2 years after treatment with praziquantel or oxamniquine. Cure rates, clinical features, abdominal ultrasonographic findings, and specific humoral responses were determined at 2-, 6-, and 24-month follow-ups. Fourteen patients (77.8%) were considered parasitologically cured. Levels of IgA antibody to soluble egg antigen (SEA) and IgM antibody to keyhole limpet hemocyanin (KLH) became negative or decreased to the cutoff level for chronic infection 2 months after treatment, while levels of IgG antibody to KLH declined between 12 and 24 months after treatment. Levels of IgM and IgG antibodies to saline worm adult protein as well as IgM and IgG antibodies to SEA remained positive during the follow-up period. Discrete lymph node enlargement and hepatomegaly were still present in six of the eight cured children 2 years after treatment, while complete regression was observed in adults. In our group of patients, in addition to presenting with more intense clinical manifestations, children were cured less often and had slower abatement of symptomatology after treatment than adults.
Collapse
Affiliation(s)
- A L Rabello
- Centro de Pesquisas René Rachou-Fundação Oswaldo Cruz-FIOCRUZ, Belo Horizonte, Brazil
| | | | | | | | | |
Collapse
|
18
|
Firmo JO, Lima Costa MF, Guerra HL, Rocha RS. Urban schistosomiasis: morbidity, sociodemographic characteristics and water contact patterns predictive of infection. Int J Epidemiol 1996; 25:1292-300. [PMID: 9027538 DOI: 10.1093/ije/25.6.1292] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [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] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Schistosomiasis (Schistosoma mansoni) is classically described as a rural disease that occurs in areas with poor sanitary conditions. This cross-sectional study was undertaken in a suburban area of a large industrialized city in Brazil (Belo Horizonte), aiming at examining epidemiological characteristics of schistosomiasis in an urban setting. METHODS A simple random sample of 658/1896 dwellings was selected and 3049/3290 (92.7%) residents were submitted to stool examination. Of 518 eligible infected cases and 518 uninfected controls, 87.1% and 89.9% participated in the study, respectively. RESULTS The prevalence of S. mansoni infection was 20%, predominantly low egg counts in stools; no cases of splenomegaly were found. Signs and symptoms associated with infection were bloody stools (odds ratio [OR] = 8.0) and hardened palpable liver at the middle clavicular and at the middle sternal life (OR = 5.5 and 8.0 respectively). Sociodemographic variables and water contacts predictive of infection were age (10-19 and > or = 20 yrs; OR = 7.1 and 3.3, respectively), gender (male; OR = 3.1), contacts for swimming and/or playing (twice a month or less and more than twice a month; OR = 2.2 and 3.0, respectively) and residence in Belo Horizonte (born in the City; OR = 2.5). Ninety per cent of dwellings had a piped water supply; no association between water supply and infection was found. CONCLUSION Our results emphasize the need for schistosomiasis control measures focusing on water contacts for leisure purposes in this industrialized urban area.
Collapse
Affiliation(s)
- J O Firmo
- Laboratory of Epidemiology and Medical Anthropology, René Rachou Research Institute, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | |
Collapse
|
19
|
Coura-Filho P, Rocha RS, Lamartine SDS, Farah MW, de Resende DF, Costa JO, Katz N. Control of schistosomiasis mansoni in Ravena (Sabará, state of Minas Gerais, Brazil) through water supply and quadrennial treatments. Mem Inst Oswaldo Cruz 1996; 91:659-64. [PMID: 9283641 DOI: 10.1590/s0074-02761996000600001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [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: 02/05/2023] Open
Abstract
In this study, the results obtained in a control programme of schistosomiasis in Ravena (Sabará, Minas Gerais) between 1980 and 1992 are evaluated. Control measures used in this programme were: specific treatment of the people infected with Schistosoma mansoni at four year-intervals (1980/84/88) and the supply of tap water to 90% of the residences in 1980. A significant reduction of the prevalence (36.7% to 11.5%, p < or = 0.05) and of the intensity of the infection (228.9 eggs per gram of feces (epg), s = 3.7 to 60.3 epg, s = 3.5, p < or = 0.05) was observed. No cases of the severe form of the disease were diagnosed in the area. Factors independently associated with the infection were in 1980 daily sand extraction and the lack of tap water in residences and in 1992 daily sand extraction and fishing and weekly swimming. Concluding, the supply of tap water together with quadrennial treatments significantly diminished both the prevalence and intensity of the S. mansoni infection, with the additional gain of persistent low indices even after four-year intervals between the treatments.
Collapse
Affiliation(s)
- P Coura-Filho
- Laboratório de Esquistossomose, Centro de Pesquisas René Rachou-FIOCRUZ, Belo Horizonte, MG, Brasil
| | | | | | | | | | | | | |
Collapse
|
20
|
Rocha MO, Pedroso ER, Greco DB, Lambertucci JR, Katz N, Rocha RL, Rocha RS, Rezende DF, Neves J. Pathogenetic factors of acute schistosomiasis mansoni: correlation of worm burden, IgE, blood eosinophilia and intensity of clinical manifestations. Trop Med Int Health 1996; 1:213-20. [PMID: 8665387 DOI: 10.1111/j.1365-3156.1996.tb00029.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 02/01/2023]
Abstract
A clinical study of 34 previously healthy young patients simultaneously infected in an endemic area of schistosomiasis mansoni is presented, emphasizing the initial phase of the infection. Its intensity was established according to the occurrence, intensity, and duration of the signs and symptoms in order to investigate the possible correlations between the worm burden (estimated by the number of eggs in faeces), the blood eosinophilia and specific levels of IgE (estimated by the area of immediate intradermal reaction), with the clinical manifestations. A significant but low-level association was found between the worm burden and morbidity, suggesting that multiple factors, besides worm burden itself, may contribute to the pathogenesis of the disease.
Collapse
Affiliation(s)
- M O Rocha
- Medical School, Federal University of Minas Gerais
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Cançado CB, Firmo JO, Fernandes SC, Rocha RS, Lima e Costa MF. Effect of skin colour and selected physical characteristics on Schistosoma mansoni dependent morbidity. Rev Inst Med Trop Sao Paulo 1995; 37:493-500. [PMID: 8731261 DOI: 10.1590/s0036-46651995000600004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The effect of the colour group on the morbidity due to Schistosoma mansoni was examined in two endemic areas situated in the State of Minas Gerais, Brazil. Of the 2773 eligible inhabitants, 1971 (71.1%) participated in the study: 545 (27.6%) were classified as white, 719 (36.5%) as intermediate and 707 (35.9%) as black. For each colour group, signs and symptoms of individuals who eliminated S.mansoni eggs (cases) were compared to those who did not present eggs in the faeces (controls). The odds ratios were adjusted by age, gender, previous treatment for schistosomiasis, endemic area and quality of the household. There was no evidence of a modifier effect of colour on diarrhea, bloody faeces or abdominal pain. A modifier effect of colour on hepatomegaly was evident among those heaviest infected (> or = 400 epg): the adjusted odds ratios for palpable liver at the middle clavicular and the middle sternal lines were smaller among blacks (5.4 and 6.5, respectively) and higher among whites (10.6 and 12.9) and intermediates (10.4 and 10.1, respectively). These results point out the existence of some degree of protection against hepatomegaly among blacks heaviest infected in the studied areas.
Collapse
Affiliation(s)
- C B Cançado
- Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brasil
| | | | | | | | | |
Collapse
|
22
|
Rabello AL, Garcia MM, da Silva RA, Rocha RS, Chaves A, Katz N. Humoral immune responses in acute schistosomiasis mansoni: relation to morbidity. Clin Infect Dis 1995; 21:608-15. [PMID: 8527552 DOI: 10.1093/clinids/21.3.608] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 01/31/2023] Open
Abstract
An analysis of 25 individuals simultaneously exposed to cercariae of Schistosoma mansoni showed that morbidity (measured by the clinical/sonographic index) was more severe in patients with high-level egg output, irrespective of age or intensity of water contact. High levels of IgM and IgG antibodies to keyhole limpet hemocyanin and of IgA antibody to soluble egg antigen were documented predominantly during the acute phase of illness. Increased levels of these antibodies and of IgM antibody to soluble egg antigen correlated positively with morbidity after adjustment for age and intensity of water contact.
Collapse
Affiliation(s)
- A L Rabello
- Laboratorio de Esquistossomose, Centro de Pesquisas René Rachou--Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | | | | | | | | | | |
Collapse
|
23
|
Rocha MO, Rocha RL, Pedroso ER, Greco DB, Ferreira CS, Lambertucci JR, Katz N, Rocha RS, Rezende DF, Neves J. Pulmonary manifestations in the initial phase of schistosomiasis mansoni. Rev Inst Med Trop Sao Paulo 1995; 37:311-8. [PMID: 8599059 DOI: 10.1590/s0036-46651995000400005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [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: 01/31/2023] Open
Abstract
The clinical and radiological pulmonary manifestations in the initial phase of schistosomiasis mansoni were studied in thirty previously healthy individuals who were simultaneously infected. The findings were compared with those concerning a control group and related to possible pathogenetic factors. The respiratory manifestations were of light or of moderate intensity, the dry cough being the most common symptom. The significant radiological alterations were: thickening of bronchial walls and beaded micronodulation, predominantly localized in the lower pulmonary fields. It was observed significant association between wheezing and IgE levels, estimated by the area of immediate intradermal reaction, as well as between the number of blood eosinophils and the occurrence of radiological changes. Moreover, there was correlation between the worm burden and the presence of wheezing, thoracic pain and beaded micronodulation. Thus, the clinical and radiological pulmonary manifestations described are significant part of the initial phase of schistosomiasis mansoni and present the worm burden, eosinophilia and levels of IgE as probable pathogenetic factors.
Collapse
Affiliation(s)
- M O Rocha
- Medical School, Federal University of Minas Gerais, Belo Horizonte, Brasil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Abstract
Abdominal ultrasonography was performed on eight children and four adults with acute schistosomiasis mansoni, 12 chronically infected patients, and 12 noninfected individuals from the endemic area, who were paired by age and sex with the acute group. In all acute patients, lymphadenomegaly as well as liver and spleen enlargement were detected. Lymph nodes surrounding the portal vein and the hepatic artery in the hepatic hilus were visualized. In the children, the right lobe of the liver was statistically significantly larger in the acute group than in the noninfected group. The portal and splenic vein diameters were significantly larger in children with acute schistosomiasis than in the chronically infected and negative control groups. The left hepatic lobe and a longitudinal scan of the spleen in acute adult patients were statistically significantly larger than in the chronically infected and negative control groups. Ultrasonography is shown to be a useful tool for the differential diagnosis of acute schistosomiasis mansoni.
Collapse
Affiliation(s)
- A L Rabello
- Centro de Pesquisas Rene Rachou, Fundacao Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | |
Collapse
|
25
|
Coura-Filho P, Rocha RS, Farah MW, da Silva GC, Katz N. Identification of factors and groups at risk of infection with Schistosoma mansoni: a strategy for the implementation of control measures? Rev Inst Med Trop Sao Paulo 1994; 36:245-53. [PMID: 7855489 DOI: 10.1590/s0036-46651994000300009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [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: 01/27/2023] Open
Abstract
A fourteen year schistosomiasis control program in Peri-Peri (Capim Branco, MG) reduced prevalence from 43.5 to 4.4%; incidence from 19.0 to 2.9%, the geometric mean of the number of eggs from 281 to 87 and the level of the hepatoesplenic form cases from 5.9 to 0.0%. In 1991, three years after the interruption of the program, the prevalence had risen to 19.6%. The district consists of Barbosa (a rural area) and Peri-Peri itself (an urban area). In 1991, the prevalence in the two areas was 28.4% and 16.0% respectively. A multivariate analysis of risk factors for schistosomiasis indicated the domestic agricultural activity with population attributive risk (PAR) of 29.82%, the distance (< 10m) from home to water source (PAR = 25.93%) and weekly fishing (PAR = 17.21%) as being responsible for infections in the rural area. The recommended control measures for this area are non-manual irrigation and removal of homes to more than ten meters from irrigation ditches. In the urban area, it was observed that swimming at weekly intervals (PAR = 20.71%), daily domestic agricultural activity (PAR = 4.07%) and the absence of drinking water in the home (PAR = 4.29%) were responsible for infections. Thus, in the urban area the recommended control measures are the substitution of manual irrigation with an irrigation method that avoids contact with water, the creation of leisure options of the population and the provision of a domestic water supply.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- P Coura-Filho
- Schistosomiasis Lab, Centro de Pesquisas René Rachou/FIOCRUZ, C.P.1743, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | | | |
Collapse
|
26
|
Costa MF, Rocha RS, Magalhães MH, Katz N. [A hierarchical model for analysis of socio-economic variables and water contact patterns associated with the hepatosplenic form of schistosomiasis]. CAD SAUDE PUBLICA 1994; 10 Suppl 2:241-53. [PMID: 15042214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
A study of factors associated with the hepatosplenic clinical form of schistosomiasis was carried out in an endemic area (Comercinho, Minas Gerais) where prevalence of Schistosoma mansoni infection was 70.4%. Of the 1,408 inhabitants aged two years and over, 1,162 (82.5%) participated in the study. Socio-demographic characteristics and reasons for water contacts of individuals with the hepatosplenic form (n = 73) were compared to those who did not present splenomegaly and eliminated (positive controls; n + 804) or did not eliminate S. mansoni eggs in stools (negative controls; n = 285). Multivariate analysis was performed, considering the existence of colinearity among socio-economic status of the family, running water in the household, and bathing in streams. The hepatosplenic form in children was strongly associated with occupation of the head of the family (manual workers) (OR = 11.4; 95% CI = 1.4 - 91.8), absence of running water in the household (OR = 7.7; 95% CI = 2.6 - 23.1), and bathing in streams (OR and 95% CI 7.6; 2.5-22.9 and 5.7; 1.3-25.5 for frequencies > weekly and <= weekly, respectively); bathing in streams, which implies intense contacts, was a consequence of the first two factors. Our results suggest that running water in the household can decrease morbidity from schistosomiasis because it reduces the need for intense contacts with streams.
Collapse
Affiliation(s)
- M F Costa
- Departamento de Medicina Preventiva e Social, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 30130-100, Brasil
| | | | | | | |
Collapse
|
27
|
Rabello AL, Garcia MM, Dias Neto E, Rocha RS, Katz N. Dot-dye-immunoassay and dot-ELISA for the serological differentiation of acute and chronic schistosomiasis mansoni using keyhole limpet haemocyanin as antigen. Trans R Soc Trop Med Hyg 1993; 87:279-81. [PMID: 8236391 DOI: 10.1016/0035-9203(93)90127-c] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [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: 01/29/2023] Open
Abstract
Two immunoassays, dot enzyme-linked immunosorbent assay (dot-ELISA) and dot-dye immunoassay (dot-DIA), using soluble egg antigen and keyhole limpet haemocyanin as antigens, were evaluated for the serological differentiation of 25 acute and 37 chronic patients infected with Schistosoma mansoni and 20 non-infected individuals, in comparison with ELISA. Efficiency was 92.7%, 90.0% for ELISA, dot-ELISA and dot-DIA, respectively. Dipstick dot-ELISA and dot-DIA are described and shown to be reliable cheap and simple methods for the serological differentiation of acute and chronic schistosomiasis.
Collapse
Affiliation(s)
- A L Rabello
- Centro de Pesquisas René Rachou-FIOCRUZ, Belo Horizonte, Brazil
| | | | | | | | | |
Collapse
|
28
|
Rocha MO, Pedroso ER, Neves J, Rocha RS, Greco DB, Lambertucci JR, Rocha RL, Katz N. Characterization of the non-apparent clinical form in the initial phase of schistosomiasis mansoni. Rev Inst Med Trop Sao Paulo 1993; 35:247-51. [PMID: 8278754 DOI: 10.1590/s0036-46651993000300005] [Citation(s) in RCA: 4] [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: 01/29/2023] Open
Abstract
In this paper the history of 115 recruits that had bathed simultaneously in streams contaminated with Schistosoma mansoni, during military maneuvers, is reported. Thirty four of the infected patients presented the initial phase of the infection diagnosed through epidemiologic, clinical and laboratory parameters. Three out of the 34 patients did not reveal the clinical picture of the infection, thus being considered representatives of the non-apparent form of the disease. Differences between the intensity of blood eosinophilia, the area of immediate cutaneous reaction and the number of Schistosoma eggs eliminated in the stools proved not to be statistically significant (p > 0.05) when the non-apparent and acute cases of schistosomiasis were compared. These cases actually may be considered evidences of the non-apparent form hitherto merely taken for granted in the literature.
Collapse
Affiliation(s)
- M O Rocha
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | | | | | | | | | | | | | | |
Collapse
|
29
|
de Lima e Costa MF, Rocha RS, Coura Filho P, Katz N. A 13-year follow-up of treatment and snail control in an area endemic for Schistosoma mansoni in Brazil: incidence of infection and reinfection. Bull World Health Organ 1993; 71:197-205. [PMID: 8490983 PMCID: PMC2393443] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The incidences of Schistosoma mansoni infection and reinfection were investigated in an endemic area of Brazil (Peri-Peri, State of Minas Gerais) where chemotherapy and snail control had been used for 13 years (1974-87). Two cohorts were followed: the first consisted of 584 individuals with no evidence of infection at entry (infection cohort), and the second comprised 296 individuals who were treated and did not eliminate eggs 8-12 months afterwards (reinfection cohort). The incidence of infection (per 100 person-years) decreased from 7.5 in 1974-77 to 3.6 in 1986-87, and that of reinfection from 21.3 in 1974-77 to 3.7 in 1986-87. Calendar period, age at risk, and sex were independently associated with both infection and reinfection, while a heavy S. mansoni egg count prior to treatment (> or = 500 epg (eggs per gram of stools)) was independently associated with reinfection. The geometric mean number of eggs after treatment among those reinfected (47 epg) was approximately half that among those infected for the first time (81.5 epg). Age at risk had the greatest effect on both infection and reinfection. The rate ratios of infection and reinfection were 3 to 6 times higher among individuals younger than 20 years than among those aged > or = 25 years, even after adjusting for confounders. This suggests the existence of a strong protective effect with increased age (because of biological and/or environmental factors) for both infection and reinfection.
Collapse
Affiliation(s)
- M F de Lima e Costa
- Department of Preventive and Social Medicine, Universidade Federal de Minas Gerais, Brazil
| | | | | | | |
Collapse
|
30
|
Coura Filho P, Rocha RS, de Lima E Costa MF, Katz N. A municipal level approach to the management of schistosomiasis control in Peri-Peri, MG, Brazil. Rev Inst Med Trop Sao Paulo 1992; 34:543-8. [PMID: 1342123 DOI: 10.1590/s0036-46651992000600008] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [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: 12/26/2022] Open
Abstract
A schistosomiasis control program was implemented between 1974/87 in Peri-Peri, MG (622 inhabitants). Molluscicide (niclosamide) was applied at three monthly intervals in water sources with Biomphalaria glabrata, and individuals eliminating Schistosoma mansoni eggs in the feces were treated annually with oxamniquine. From 1974 to 1983 the control measures were undertaken by staff of the "René Rachou" Research Center FIOCRUZ (CPqRR), and from 1984 to 1987 these measures were included in the Capim Branco basic health network activities. During both periods, the prevalence, incidence, intensity of infection and hepatosplenic form as well as the number of infected snails decreased significantly. The prevalence decreased from 43.5 to 4.4%, the incidence from 19.0 to 2.9%, the overall intensity of S. mansoni from 281 to 87 and of the hepatosplenic form from 5.9 to 0.0%. The results obtained suggest that the municipal management of control measures was as effective as the vertical program conducted by CPqRR staff.
Collapse
Affiliation(s)
- P Coura Filho
- Schistosomiasis Lab, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | |
Collapse
|
31
|
Rabello AL, Rocha RS, de Oliveira JP, Katz N, Lambertucci JR. Stool examination and rectal biopsy in the diagnosis and evaluation of therapy of schistosomiasis mansoni. Rev Inst Med Trop Sao Paulo 1992; 34:601-8. [PMID: 1342131 DOI: 10.1590/s0036-46651992000600016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 12/26/2022] Open
Abstract
From each of a group of 217 adult males selected through enzyme-immunoassay or skin-test (Group A), six stool samples were examined by both the Lutz/Hoffman, Pons & Janer (Lutz/HPJ) and Kato/Katz methods. In addition, one oogram of the rectal mucosa was performed. By these methods, schistosomiasis was detected in 44.7%, 47.5% and 40.1% of the individuals respectively. To evaluate the methods in the assessment of cure, the last 40 patients from group A, treated with a single oral dose of oxamniquine at 15 mg/kg were followed up for six months (Group B). The criteria for parasitological cure included three stool examinations by Kato/Katz and Lutz/HPJ methods, one, three and six months post-treatment and a rectal biopsy between the fourth and sixth months post-treatment. The examinations were negative in 87.5%, 90% and 95% of the patients, respectively. The efficacy of oxamniquine was 82.5% when the three methods were considered together and there was no statistically significant difference between the sensitivity of the individual methods.
Collapse
Affiliation(s)
- A L Rabello
- Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Brasil
| | | | | | | | | |
Collapse
|
32
|
Alves-Brito CF, Simpson AJ, Bahia-Oliverira LM, Rabello AL, Rocha RS, Lambertucci JR, Gazzinelli G, Katz N, Correa-Oliveira R. Analysis of anti-keyhole limpet haemocyanin antibody in Brazilians supports its use for the diagnosis of acute schistosomiasis mansoni. Trans R Soc Trop Med Hyg 1992; 86:53-6. [PMID: 1566306 DOI: 10.1016/0035-9203(92)90439-j] [Citation(s) in RCA: 38] [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: 12/27/2022] Open
Abstract
Antibody (immunoglobulin (Ig) G) to the haemocyanin of the keyhole limpet (KLH) (Megathura crenulata), which shares a well defined carbohydrate epitope with the surface of schistosomula of Schistosoma mansoni, was determined by enzyme-linked immunosorbent assay (ELISA) in the sera of Brazilians with acute schistosomiasis. Of 53 such individuals tested, 51 had a level of KLH reactivity in excess of the mean +2 standard deviations of that exhibited by chronically infected individuals. This difference in reactivity allowed the acute cases to be readily identified by visual inspection of ELISA plates. The levels of IgG in patients with hepatointestinal and hepatosplenic schistosomiasis, as well as in non-infected, seropositive residents of endemic areas and infected children from endemic areas, were not statistically different from those of intestinal patients. Significant levels of anti-KLH IgG were not detected in patients with leishmaniasis, Chagas disease, ancylostomiasis or ascariasis. The results support the use of KLH as a means of rapidly and easily identifying individuals with acute schistosomiasis.
Collapse
Affiliation(s)
- C F Alves-Brito
- Centro de Pesquisas René Rachou-FIOCRUZ, Belo Horizonte, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
De Jonge N, Rabello AL, Krijger FW, Kremsner PG, Rocha RS, Katz N, Deelder AM. Levels of the schistosome circulating anodic and cathodic antigens in serum of schistosomiasis patients from Brazil. Trans R Soc Trop Med Hyg 1991; 85:756-9. [PMID: 1801347 DOI: 10.1016/0035-9203(91)90446-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [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: 12/28/2022] Open
Abstract
Serum levels of 2 schistosome circulating antigens, the circulating anodic antigen (CAA) and the circulating cathodic antigen (CAA), were determined in persons infected with Schistosoma mansoni in Brazil. Sensitive monoclonal antibody-based enzyme-linked immunosorbent assays were used to measure levels of the 2 antigens. The study group consisted of 38 individuals with intestinal schistosomiasis, and 20 persons with the hepatosplenic form of the disease. Age and intensity of infection were comparable for the 2 groups. CAA was detected in 65.5% of all patients' sera and CCA was found in the serum of 82.8% of all patients. CAA levels correlated well with the egg output, as determined by duplicate Kato-Katz smears; CCA was significantly positively correlated with egg output in patients with intestinal schistosomiasis only. Whereas no significant difference was found between CAA titre in patients with intestinal schistosomiasis and those with the hepatosplenic form, a significantly higher CCA titre was found in patients with hepatosplenomegaly compared to patients with intestinal schistosomiasis.
Collapse
Affiliation(s)
- N De Jonge
- Laboratory of Parasitology, Medical Faculty, University of Leiden, The Netherlands
| | | | | | | | | | | | | |
Collapse
|
34
|
Guerra HL, Guimarães CT, França MA, Rocha RS, Katz N. [Identification of a new focus of schistosoma mansoni. (Municipality of Nova Lima, MG, Brazil]. Rev Soc Bras Med Trop 1991; 24:169-72. [PMID: 1842844 DOI: 10.1590/s0037-86821991000300008] [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] [Indexed: 12/29/2022] Open
Abstract
The detection of a new transmission focus of schistosomiasis in Nova Lima town, Minas Gerais State, Brazil, is reported. The search of snail intermediate hosts in Banqueta do Bananal a small locality of Boa Vista neighbourhood detected 356 specimens of Biomphalaria glabrata, with a infection rate of 8.4%. In hundred-sixty-two patients stool examinations (Kato-Katz method) were done, showing ninety-one patients with eggs of Schistosoma mansoni in their feces. The integrated action of local residents and the local administration resulted in the elimination of the focus.
Collapse
|
35
|
Katz N, Rocha RS, de Souza CP, Coura Filho P, Bruce JI, Coles GC, Kinoti GK. Efficacy of alternating therapy with oxamniquine and praziquantel to treat Schistosoma mansoni in children following failure of first treatment. Am J Trop Med Hyg 1991; 44:509-12. [PMID: 1905880 DOI: 10.4269/ajtmh.1991.44.509] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [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: 12/29/2022] Open
Abstract
Two hundred children infected with Schistosoma mansoni were treated with either 20 mg/kg oxamniquine or 60 mg/kg praziquantel. Cure rates (about 85%) were similar as was the percentage reduction (80%) in egg counts in uncured children. Treatment with the alternative drug of children not cured with the first treatment resulted in negative stools in 11 of 12 cases examined one month after the second round of therapy. In order to minimize the risk of the development of drug resistance, our data suggest that infected patients be treated with one drug, and therapeutic failures with another. Evidence from experiments in mice with isolates obtained after failures of one treatment in children suggests that therapeutic failure does not necessarily indicate the presence of drug-resistant schistosomes. The value of using mice to assess drug resistance in schistosomes is questioned.
Collapse
Affiliation(s)
- N Katz
- Centro de Pesquisas Rene Rachou, Fiocruz, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | | | | | | | |
Collapse
|
36
|
Lima e Costa MF, Rocha RS, Leite ML, Carneiro RG, Colley D, Gazzinelli G, Katz N. A multivariate analysis of socio-demographic factors, water contact patterns and Schistosoma mansoni infection in an endemic area in Brazil. Rev Inst Med Trop Sao Paulo 1991; 33:58-63. [PMID: 1843398 DOI: 10.1590/s0036-46651991000100011] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [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: 12/29/2022] Open
Abstract
Associations between socio-demographic factors, water contact patterns and Schistosoma mansoni infection were investigated in 506 individuals (87% of inhabitants over 1 year of age) in an endemic area in Brazil (Divino), aiming at determining priorities for public health measures to prevent the infection. Those who eliminated S. mansoni eggs (n = 198) were compared to those without eggs in the stools (n = 308). The following explanatory variables were considered: age, sex, color, previous treatment with schistosomicide, place of birth, quality of the houses, water supply for the household, distance from houses to stream, and frequency and reasons for water contact. Factors found to be independently associated with the infection were age (10-19 and > or = 20 yrs old), and water contact for agricultural activities, fishing, and swimming or bathing (Adjusted relative odds = 5.0, 2.4, 3.2, 2.1 and 2.0, respectively). This suggests the need for public health measures to prevent the infection, emphasizing water contact for leisure and agricultural activities in this endemic area.
Collapse
Affiliation(s)
- M F Lima e Costa
- Departamento de Medicina Preventiva e Social, Universidade Federal de Minas Gerais, Brasil
| | | | | | | | | | | | | |
Collapse
|
37
|
de Lima e Costa MF, Rocha RS, Colley D, Gazzinelli G, Katz N. Validity of selected clinical signs and symptoms in diagnosis of Schistosoma mansoni infection. Rev Inst Med Trop Sao Paulo 1991; 33:12-7. [PMID: 1843390 DOI: 10.1590/s0036-46651991000100003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [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: 12/29/2022] Open
Abstract
Sensitivity, specificity and positive predictive values of selected clinical signs and symptoms in the diagnosis of Schistosoma mansoni infection were evaluated in 403 individuals (69% of inhabitants over 1 year of age) in an endemic area in Brazil (Divino). Highest sensitivity (13%) was found for blood in stools. Specificity over 90% was found for blood in stools, palpable liver with normal consistency and palpable hardened liver at middle clavicular (MCL) or middle sternal lines (MSL). Hardened liver at MSL (83%) or MCL (75%), and blood in stools (78%) presented higher positive predictive values for S. mansoni infection, while palpable liver with normal consistency at MCL (45%) or MSL (48%) presented smaller values. Enlarged liver without specification of its consistency has been traditionally used as an indicator of the infection in areas where malaria or Kala-azar are not endemic. Our results demonstrate that the probability that a person with blood in stools or hardened palpable liver is infected is higher than among those with palpable liver with normal consistency.
Collapse
Affiliation(s)
- M F de Lima e Costa
- Departamento de Medicina Preventiva e Social, Universidade Federal de Minas Gerais, Brasil
| | | | | | | | | |
Collapse
|
38
|
Rocha RS, Alvares LC, Tavano O, Damante JH, Moraes N. [Radiographic study of the applicability of three anatomical landmarks in transcranial radiography of the temporomandibular joint]. Rev Odontol Univ Sao Paulo 1990; 4:67-72. [PMID: 2135335] [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: 12/30/2022]
Abstract
The variability of the angles formed between the long axis of the right and left condyles and the midsagittal plane, as well as the applicability of three anatomic landmarks--zigoma, gonion and base of the mandible, for transcranian radiographs of the TMJ were studied. The radiographic method used in this study was the HIRTZ axial projection. The results of the measurements showed a great variation in the angle formed by the long axis of the condyles and the midsagittal plane, from 48 degrees-79 degrees (x = 63.73 degrees) for the right side, from 50 degrees-80 degrees (x = 67.43 degrees) for the left side. It was also observed that the use of the three anatomic landmarks must not be generalized, being more precisely indicated for tapering head and face.
Collapse
Affiliation(s)
- R S Rocha
- Departamento de Patologia da FOB-Universidade de São Paulo
| | | | | | | | | |
Collapse
|
39
|
Abstract
We have produced a panel of human monoclonal antibodies (MoAb) from patients infected with Schistosoma mansoni in order to analyse more carefully the human immune response to this helminth infection. This study describes the production, characterization and analysis of these MoAbs. Briefly, peripheral blood mononuclear cells from chronically infected patients were (1) isolated and stimulated with parasite antigens in vitro, (2) positively selected for B-cells on anti-Ig columns, and (3) then transformed with Epstein-Barr virus (EBV). Once EBV cell lines were established, they were selected for anti-S. mansoni antibodies using an ELISA, cloned, retested and then fused with the mouse-human heteromyeloma SHM-D33. In this study, we describe five MoAbs which have different antigenic specificities for life-cycle stages based on ELISA to soluble crude antigen preparations, membrane immunofluorescence on whole intact organisms, and immunofluorescent staining of cryostat frozen sections. The importance of these reagents with regard to the human immune response to S. mansoni is currently being evaluated.
Collapse
Affiliation(s)
- A M Goes
- Department of Veterinary Microbiology and Parasitology, College of Veterinary Medicine, Texas A & M University, College Station 77843
| | | | | | | |
Collapse
|
40
|
Abstract
A new focus of schistosomiasis mansoni at Passos, a town in the Southwest of the State of Minas Gerais (Brazil), region until now considered free of the disease is reported. Malacological surveys showed Biophalaria glabrata naturally infected with Schistosoma mansoni in a country club near Passos. All B. straminea captured at the pisciculture station of the Furnas hydroelectric dam were negative. Six out of seven individuals living in the country club were found to be infected with S. mansoni, including four children who had never been out of Passos. The epidemiological importance of these findings is discussed.
Collapse
|
41
|
de Lima e Costa MF, Leite ML, Rocha RS, de Almeida Magalhães MH, Katz N. Anthropometric measures in relation to Schistosomiasis mansoni and socioeconomic variables. Int J Epidemiol 1988; 17:880-6. [PMID: 3147244 DOI: 10.1093/ije/17.4.880] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 01/04/2023] Open
Abstract
A cross-sectional study of anthropometric measures and their association with socioeconomic variables, infection by Schistosoma mansoni, intensity of infection and splenomegaly was carried out in an endemic area for schistosomiasis in Brazil (Comercinho), using multiple logistic regression methods. Eighty-seven per cent of all 1.5-14.4 year-old children in the area participated in the study. Children below the 5th percentile (USA Ten State Survey) for height-for-age, weight-for-age and arm muscle area-for-age were compared to those greater than the 5th percentile. There was no association between low anthropometric measures and schistosomiasis or socioeconomic variables in children under five years of age. For the 4.4-14.4 year-old children, poor condition of the heads of family and poorer housing were independently associated with low height and arm muscle area. Heavy excretion of S. mansoni eggs (greater than or equal to 500 epg) was related to low height, and splenomegaly was the variable which showed the strongest association with low height, weight and arm muscle area (odds ratios adjusted for socioeconomic variables were 6.4, 3.5 and 3.7 respectively). This indicates that there is a biological component for low anthropometric measures in the severe form of schistosomiasis and this reinforces the need for public health measures to prevent the development of splenomegalies in endemic areas.
Collapse
Affiliation(s)
- M F de Lima e Costa
- Department of Preventive and Social Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | | | | | | |
Collapse
|
42
|
Gazzinelli RT, Parra JF, Correa-Oliveira R, Cançado JR, Rocha RS, Gazzinelli G, Colley DG. Idiotypic/anti-idiotypic interactions in schistosomiasis and Chagas' disease. Am J Trop Med Hyg 1988; 39:288-94. [PMID: 3140682 DOI: 10.4269/ajtmh.1988.39.288] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [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: 01/04/2023] Open
Abstract
Immunoaffinity-purified antibodies against soluble Schistosoma mansoni egg antigens (SEA) were isolated from the sera of patients with schistosomiasis mansoni. Similarly, antibodies against Trypanosoma cruzi epimastigote antigens were obtained from sera of patients with Chagas' disease. These antibody preparations were used in culture to demonstrate the presence of anti-idiotypic T lymphocytes in peripheral blood mononuclear cell preparations from patients with either schistosomiasis mansoni or Chagas' disease, or with both of these infections. Only cells from patients with schistosomiasis or both infections proliferated upon exposure to the anti-SEA antibodies. Conversely, only cells from patients with Chagas' disease or both infections responded to anti-epimastigote antibodies. Western blot analysis of SEA and epimastigote antigens, developed by patients' sera or by immunoaffinity-purified antibody preparations, substantiated that anti-SEA immunoaffinity-purified antibodies only reacted with components of SEA, and anti-epimastigote immunoaffinity-purified antibodies only reacted with components of epimastigote antigenic preparation. These studies demonstrate the presence of anti-idiotypic T lymphocytes in the peripheral blood of patients with schistosomiasis or Chagas' disease which are specific for idiotypes generated during these infections.
Collapse
Affiliation(s)
- R T Gazzinelli
- Departamentos de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Brazil
| | | | | | | | | | | | | |
Collapse
|
43
|
Carvalho ODS, Rocha RS, Massara CL, Katz N. [1st authochtonous cases of schistosomiasis mansoni in the Northwest region of the State of Minas Gerais (Brazil)]. Rev Saude Publica 1988; 22:237-9. [PMID: 3148189 DOI: 10.1590/s0034-89101988000300011] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
São relatados os primeiros casos autóctones de esquistossomose mansoni, originários da cidade de Paracatu, Noroeste do Estado de Minas Gerais, Brasil, região até o momento considerrada indene para esta parasitose. Trata-se de oito pacientes com idade entre 12 e 14 anos, e que nunca haviam se ausentado da localidade. Os levantamentos malacológicos proporcionaram a coleta de 11.471 exemplares de Biomphalaria straminea, todos negativos para Schistosoma mansoni. Foram sugeridas medidas que, se colocadas em prática, poderiam controlar a parasitose na cidade.
Collapse
|
44
|
Rocha RS. [Cerebrovascular disorders at a cardiology hospital. Study of 60 cases]. Arq Bras Cardiol 1988; 50:243-6. [PMID: 3228377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
|
45
|
de Lima e Costa MF, Proietti FA, Paulino UH, Antunes CM, Guimarães MD, Rocha RS, Katz N. Absence of cross-reactivity between Schistosoma mansoni infection and human immunodeficiency virus (HIV). Trans R Soc Trop Med Hyg 1988; 82:262. [PMID: 3142117 DOI: 10.1016/0035-9203(88)90441-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- M F de Lima e Costa
- Grupo Interdepartamental de Pesquisas em Epidemiologia, Universidade Federal de Minas Gerais, Belo Horizonte, M.G., Brazil
| | | | | | | | | | | | | |
Collapse
|
46
|
Pedroso ER, Lambertucci JR, Rocha MO, Greco DB, Ferreira CS, Rocha RS, Katz N. Bowel x-ray alterations in acute human schistosomiasis. Rev Soc Bras Med Trop 1987; 20:159-62. [PMID: 3148976 DOI: 10.1590/s0037-86821987000300006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A radiological study of the small intestine of 17 untreated patients in the acute phase ofschistosomiasis was performed. Twelve patients (70% of total) had alterations: nine had clear-cut thickening of the duodenal and jejunal folds, one flocculation, one fragmentation and one thickening of mucosae, flocculation and fragmentation of the barium column. There was no correlation of the gastrointestinal symptomatology (vomiting, diarrhoea, dysentery, hepatomegaly) neither with the parasitological load nor with the x-ray alterations.
Collapse
|
47
|
Gazzinelli G, Montesano MA, Corrêa-Oliveira R, Lima MS, Katz N, Rocha RS, Colley DG. Immune response in different clinical groups of schistosomiasis patients. Mem Inst Oswaldo Cruz 1987; 82 Suppl 4:95-100. [PMID: 3151120 DOI: 10.1590/s0074-02761987000800015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- G Gazzinelli
- Centro de Pesquisas René Rachou - FIOCRUZ, Belo Horizonte, MG, Brasil
| | | | | | | | | | | | | |
Collapse
|
48
|
Affiliation(s)
- O S Carvalho
- Centro de Pesquisas René Rachou-FIOCRUZ, Belo Horizonte, MG, Brasil
| | | | | | | |
Collapse
|
49
|
Corrêa-Oliveira R, Oliveira GC, Golgher DB, Viana IR, Colley DG, Carvalho OS, Rocha RS, Katz N, Gazzinelli G. Analysis of antibody responses of Schistosoma mansoni infected patients against schistosomal antigens. Mem Inst Oswaldo Cruz 1987; 82 Suppl 4:179-81. [PMID: 3151092 DOI: 10.1590/s0074-02761987000800031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- R Corrêa-Oliveira
- Centro de Pesquisas René Rachou, FIOCRUZ, Belo Horizonte, MG, Brasil
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Lima e Costa MF, Magalhães MH, Rocha RS, Antunes CM, Katz N. Water-contact patterns and socioeconomic variables in the epidemiology of schistosomiasis mansoni in an endemic area in Brazil. Bull World Health Organ 1987; 65:57-66. [PMID: 3107847 PMCID: PMC2490852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A study was carried out in Comercinho in south-east Brazil where information relating to socioeconomic factors and water contacts was obtained from 290 (99% of the total) households and 1208 (82% of the total) inhabitants, respectively. Stool examinations and physical examinations were performed on 90% and 82% of the population, respectively. The rates of Schistosoma mansoni infection and splenomegaly were higher in families whose heads were manual workers, in individuals living in houses without piped water and of poor construction, and in those who were born in Comercinho. A total of 1017 (84%) individuals reported water contact; 75% of these contacts were for household activities or bathing and 21% for leisure. The faecal egg counts decreased in persons over 15 years of age, while the degree (intensity) of water contact did not. The mean degree of water contact was higher in individuals without than with piped water in the household (96.8+/-0.6 v. 25.7+/-0.6). The main risk factors for splenomegaly weer no piped water, intense water contact, bathing in streams, and daily contact (odds ratio=7.3, 5.1, 4.5 and 3.6, respectively). These results indicate that the extension of piped water to houses should decrease the incidence of splenomegaly in this endemic area.
Collapse
|