1
|
Marchioro AA, Colli CM, de Souza CZ, da Silva SS, Tiyo BT, Evangelista FF, Higa L, Conchon-Costa I, Falavigna-Guilherme AL. Analysis of cytokines IFN-γ, TNF-α, TGF-β and nitric oxide in amniotic fluid and serum of pregnant women with toxoplasmosis in southern Brazil. Cytokine 2018; 106:35-39. [DOI: 10.1016/j.cyto.2018.02.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 02/20/2018] [Accepted: 02/21/2018] [Indexed: 01/11/2023]
|
2
|
de Souza CZ, Rafael K, Sanders AP, Tiyo BT, Marchioro AA, Colli CM, Gomes ML, Falavigna-Guilherme AL. An alternative method to recover Toxoplasma gondii from greenery and fruits. Int J Environ Health Res 2016; 26:600-5. [PMID: 27604245 DOI: 10.1080/09603123.2016.1227960] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 01/09/2016] [Accepted: 07/22/2016] [Indexed: 06/06/2023]
Abstract
Toxoplasma gondii oocysts are an important form of contamination with a high dispersion in the environment, but their detection is still a challenge. This study evaluated the recovery of oocysts from strawberries and crisphead lettuce. Samples (250 g of strawberries or one head of lettuce) were experimentally inoculated with 10, 10(2), 10(3) and 10(4) T. gondii oocysts, by two separate processes, spot dripping and immersion. Then, 50 g of each sample was washed, filtered through a cellulose ester membrane, and concentrated by centrifugation. Three aliquots were taken for DNA extraction in a direct way, after freeze-thaw (FT) cycles or ultrasound (US), followed by PCR (B22-B23 and Tox4-Tox5 primers). The T. gondii DNA was amplified with the primers B22-B23 in all samples contaminated by dripping and when DNA extraction was carried out after FT or US. These techniques may be useful in epidemiological surveillance in the control of this zoonosis.
Collapse
Affiliation(s)
- Carla Zangari de Souza
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| | - Katyelle Rafael
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| | - Ana Paula Sanders
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| | - Bruna Tiaki Tiyo
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| | - Ariella Andrade Marchioro
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| | - Cristiane Maria Colli
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| | - Mônica Lúcia Gomes
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| | - Ana Lúcia Falavigna-Guilherme
- a Department of Basic Health Sciences , State University of Maringá (UEM) , Maringá , Brazil
- b Environmental Parasitology Laboratory , State University of Maringá (UEM) , Maringá , Brazil
| |
Collapse
|
3
|
Tiyo R, de Souza CZ, Arruda Piovesani AF, Tiyo BT, Colli CM, Marchioro AA, Gomes ML, Falavigna-Guilherme AL. Predominance of Giardia duodenalis Assemblage AII in Fresh Leafy Vegetables from a Market in Southern Brazil. J Food Prot 2016; 79:1036-9. [PMID: 27296610 DOI: 10.4315/0362-028x.jfp-15-306] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We investigated the presence of Giardia duodenalis cysts and its genotypes in raw leafy vegetables sold in a Brazilian market. These products are different from those sold in most street markets because the producers themselves display and sell their products and rely on specialized technical and sanitary assistance. Vegetable and water samples were collected from 14 (80%) producers who cultivated vegetables that are typically consumed raw for sale at the market, obtained at the market and farms, respectively. A total of 128 samples of leafy greens (chives, parsley, cabbage, arugula, watercress, and chicory) and 14 water samples were analyzed by direct immunofluorescence and PCR techniques. The positive samples were genotyped (GHD gene) using PCR and restriction fragment length polymorphism. The analyses indicated that 16 (12.5%) of 128 samples were positive by PCR, while 1 (0.8%) of 128 samples were positive by immunofluorescence. Giardia cysts were not detected in the water samples obtained at the farms. The molecular technique revealed a genotype with zoonotic potential, which underscores the challenge in the control of giardiasis dissemination via the consumption of raw vegetables.
Collapse
Affiliation(s)
- Rogerio Tiyo
- Faculdade Ingá, Maringá, Rodovia PR-317, 6114 CEP 87035-510 Maringá, Paraná, Brazil
| | - Carla Zangari de Souza
- State University of Maringá, Environmental Parasitology Laboratory, Avenue Colombo, 5790 CEP 87020-9000 Maringá, Paraná, Brazil.
| | - Ana Flávia Arruda Piovesani
- State University of Maringá, Environmental Parasitology Laboratory, Avenue Colombo, 5790 CEP 87020-9000 Maringá, Paraná, Brazil
| | - Bruna Tiaki Tiyo
- State University of Maringá, Environmental Parasitology Laboratory, Avenue Colombo, 5790 CEP 87020-9000 Maringá, Paraná, Brazil
| | - Cristiane Maria Colli
- State University of Maringá, Environmental Parasitology Laboratory, Avenue Colombo, 5790 CEP 87020-9000 Maringá, Paraná, Brazil
| | - Ariella Andrade Marchioro
- State University of Maringá, Environmental Parasitology Laboratory, Avenue Colombo, 5790 CEP 87020-9000 Maringá, Paraná, Brazil
| | - Monica Lucia Gomes
- State University of Maringá, Environmental Parasitology Laboratory, Avenue Colombo, 5790 CEP 87020-9000 Maringá, Paraná, Brazil
| | - Ana Lucia Falavigna-Guilherme
- State University of Maringá, Environmental Parasitology Laboratory, Avenue Colombo, 5790 CEP 87020-9000 Maringá, Paraná, Brazil
| |
Collapse
|
4
|
Tiyo R, de Souza CZ, Nishi L, Brustolin CF, Ratti BA, Falavigna Guilherme AL. WATER FROM DIFFERENT SOURCES USED FOR THE IRRIGATION OF VEGETABLES TO BE MARKETED: RESEARCH ON Cryptosporidium spp., Giardia spp., AND COLIFORMS IN PARANA, BRAZIL. Rev Inst Med Trop Sao Paulo 2016; 57:333-6. [PMID: 26422158 PMCID: PMC4616919 DOI: 10.1590/s0036-46652015000400010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The aim of this work was to compare, from a parasitological ( Cryptosporidiumspp. and Giardia duodenalis), bacteriological (total and thermotolerants coliforms) and physicochemical perspective, water sources used for drinking and irrigation of vegetables intended to be sold for human consumption. From January 2010 to May 2011, samples of different water sources from vegetable producing properties were collected; 100 liters for parasitological analysis, 200 mL for bacteriological analysis, and five liters for physicochemical analysis. Water samples were filtered under vacuum with a kit containing a cellulose acetate membrane filter, 1.2 µm (Millipore(r), Barueri, SP, Brazil). The material retained on the membrane was mechanically extracted and analyzed by direct immunofluorescence (Merifluor(r)kit). From 20 rural properties investigated, 10 had artesian wells (40 samples), 10 had common wells (40 samples), and one had a mine (four samples), the latter contaminated by Cryptosporidiumspp. In samples from artesian wells, 90 to 130 meters depth, 42.5% were positive for total coliforms and 5.0% were identified to have abnormal coloration. From the samples of common wells, 14 to 37 meters depth, 87.5% were contaminated with total coliforms, 82.5% were positive for thermotolerant coliforms, and 12.5% had color abnormalities. We did not detect the presence of Giardiaspp. or Cryptosporidiumspp. in artesian and common wells. The use of artesian or common wells is an important step in the control of the spreading of zoonoses, particularly Cryptosporidiumspp. and Giardiaspp., as well as artesian wells for coliform control in local production of vegetables to be marketed.
Collapse
|