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Finlay CM, Stefanska AM, Coleman MM, Jahns H, Cassidy JP, McLoughlin RM, Mills KHG. Secreted products of Fasciola hepatica inhibit the induction of T cell responses that mediate allergy. Parasite Immunol 2017; 39. [PMID: 28815724 DOI: 10.1111/pim.12460] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 08/11/2017] [Indexed: 12/24/2022]
Abstract
There is evidence from epidemiology studies of a negative association between infection with helminth parasites and the development of allergy and asthma. Here, we demonstrate that the excretory/secretory products of the helminth Fasciola hepatica (FHES) protected mice against ovalbumin (OVA)-induced allergic asthma when administered at time of allergen sensitization. FHES reduced the accumulation of mucus, eosinophils and lymphocytes into the airways of allergen-challenged mice. Furthermore, FHES treatment suppressed Th2 responses in the airways. Interestingly, systemic administration of FHES at allergen challenge had no effect on airway inflammation, demonstrating that alum-induced Th2 response is set following initial allergen sensitization. Our findings highlight the immunomodulatory potential of molecules secreted by F. hepatica.
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Affiliation(s)
- C M Finlay
- Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - A M Stefanska
- Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - M M Coleman
- Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - H Jahns
- School of Veterinary Medicine, Veterinary Science Centre, University College Dublin, Dublin 4, Ireland
| | - J P Cassidy
- School of Veterinary Medicine, Veterinary Science Centre, University College Dublin, Dublin 4, Ireland
| | - R M McLoughlin
- Host-Pathogen Interactions Group School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Dublin 2, Ireland
| | - K H G Mills
- Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
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2
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Abstract
A national training project in the diagnosis of intestinal parasites was conducted in 1997. An initial national course was followed respectively by courses in the Central, Eastern, and Western Provinces. Our results showed that Cryptosporidium parvum, Cyclospora cayetanensis, and leukocytes showed a significantly lower percentage of errors after the training than before (p < 0.01). The same occurred with Entamoeba histolytica/E. dispar and Chilomastix mesnilii (p < 0.05). Among the helminths, Taenia spp., Fasciola hepatica, and hookworm showed significantly fewer errors after the training (p < 0.01). In the other specimens, few mistakes were found both at the beginning and after the training, and the percentage of errors did not change (p > 0.05). Furthermore, when comparing scores before and after training, a significant increase in median scores appeared in the Central Provinces (p < 0.05), Western Provinces (p < 0.01), and in the entire series (p < 0.01). The results showed the effectiveness of this intervention; these periodic mandatory training courses should be developed together with national programs for quality assessment in Parasitology.
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Affiliation(s)
- F A Núñez
- Instituto de Medicina Tropical Pedro Kourí, Ciudad Habana, Cuba.
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3
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Duménigo BE, Espino AM, Finlay CM, Mezo M. Kinetics of antibody-based antigen detection in serum and faeces of sheep experimentally infected with Fasciola hepatica. Vet Parasitol 2000; 89:153-61. [PMID: 10729655 DOI: 10.1016/s0304-4017(00)00206-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The monoclonal antibody ES78 was used in a sandwich immunosorbent assay (Sandwich ELISA) for the detection of antigens in sera and faeces in the course of Fasciola hepatica infection in 10 experimentally infected sheep. All infected sheep had circulating antigens in the first week post-infection (WPI). Antigenemia was detectable until WPI 3 in four infected sheep, WPI 4 in five infected sheep and in only one sheep by WPI 5. The detection of coproantigens (Fa(g)) was possible in five infected sheep at WPI-4, in four sheep at WPI-5 and in one sheep only at WPI-6. This technique was compared to an indirect ELISA for the detection of antibodies using excretory secretory antigens of F. hepatica. A significant correlation was found between Fa(g) and egg output and also with adult worm numbers. Our method demonstrated that the diagnosis of active fasciolosis in sheep is possible during all periods of infection.
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Affiliation(s)
- B E Duménigo
- Department of Parasitology, 'Pedro Kourí' Tropical Medicine Institute (IPK), P.O. Box 601, Marianao 13, Havana City, Cuba.
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4
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Abstract
The prevalence, incidence and reinfection of giardiasis were studied in 365 children attending three day care centres (DCCs) in Havana City. Three stool samples were obtained from each child every 6 months during an 18-month period. We identified three distinct groups of children according to their patterns of infection. In the largest group (51%) children were never found infected. In the second group, they were found infected once or twice during the study period, and in the third and the smallest group (9%) they were found infected in most or all the study periods. This last group seems to be children 'predisposed' to Giardia lamblia infection. The prevalence of giardiasis (20%) remained almost constant throughout the study period. The incidence declined from 16 to 11%, and reinfection increased from 36 to 49%. All the children had normal nutritional status and the only clinical manifestation that correlated strongly with the frequency of cross-sectional surveys positive to Giardia was the number of diarrhoeal episodes recorded during the last 6 months of the study period. Further studies will be necessary to ascertain the causes that determine the 'predisposition' to giardiasis in children.
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Affiliation(s)
- F A Núñez
- Department of Parasitology, Institute of Tropical Medicine Pedro Kouri, Autopista Novia del Mediodia km 6 entre Autopista Nacional y Carretera Central, Ciudad Habana, Cuba.
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5
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Duménigo BE, Espino AM, Finlay CM, Mezo M. Kinetics of antibody-based antigen detection in serum and faeces of sheep experimentally infected with Fasciola hepatica. Vet Parasitol 1999; 86:23-31. [PMID: 10489199 DOI: 10.1016/s0304-4017(99)00126-0] [Citation(s) in RCA: 9] [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: 10/17/2022]
Abstract
The monoclonal antibody ES78 was used in a sandwich immunosorbent assay (Sandwich ELISA) for the detection of antigens in sera and faeces in the course of Fasciola hepatica infection in 10 experimentally infected sheep. All infected sheep had circulating antigens in the first week post-infection (WPI). Antigenemia was detectable until WPI 3 in four infected sheep, WPI 4 in five infected sheep and in only one sheep by WPI 5. The detection of coproantigens (Fag) was possible in five infected sheep at WPI-4, in four sheep at WPI-5 and in one sheep only at WPI-6. This technique was compared to an indirect ELISA for the detection of antibodies using excretory secretory antigens of F. hepatica. A significant correlation was found between Fag and egg output and also with adult worm numbers. Our method demonstrated that the diagnosis of active fasciolosis in sheep is possible during all periods of infection.
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Affiliation(s)
- B E Duménigo
- Department of Parasitology, Pedro Kourí, Tropical Medicine Institute, Havana City, Cuba.
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6
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de la Cruz AM, Figueroa D, Chacón L, Gómez M, Díaz M, Finlay CM. [Knowledge, opinions, and practices regarding Aedes aegypti]. Rev Cubana Med Trop 1999; 51:135-7. [PMID: 10887576] [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: 02/17/2023]
Abstract
The active participation of the community is indispensable for reducing Aedes aegypti mosquito populations so causes leading to their growth, actions taken, effects on the health and the people in charge of controlling such mosquitoes are all dealt with in this paper. 210 persons were interviewed from June 25 to 27, 1997. The causes of the growth of the mosquito population were: excessive garbage (59%), dirty waters (58%), open water reservoirs (50%) and lack of fumigation (21%). 40% of interviewed people did not know that these vectors can breed even in clean waters. They mentioned some effects on the health due to the mosquito bites. 51% said that mosquitoes should be jointly controlled by the State and the community but 35% believed that the State should be the sole responsible for this task. These opinions may determine that steps are not properly taken to avoid proliferation of vector and that the activities of the anti-vector program are not really understood since they do not meet the expectations.
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7
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Espino AM, Díaz A, Pérez A, Finlay CM. Dynamics of antigenemia and coproantigens during a human Fasciola hepatica outbreak. J Clin Microbiol 1998; 36:2723-6. [PMID: 9705421 PMCID: PMC105191 DOI: 10.1128/jcm.36.9.2723-2726.1998] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/1998] [Accepted: 05/27/1998] [Indexed: 11/20/2022] Open
Abstract
In the present study the dynamics of antigenemia and coproantigens were studied in patients with Fasciola hepatica infection during an outbreak occurring in La Palma, Pinar del Río, in the West Province of Cuba. Stool and serum samples were collected from 67 patients and 40 healthy subjects. Stool samples were studied by a simple gravity sedimentation technique and an ES78 sandwich enzyme-linked immunosorbent assay (ELISA) for observation of eggs and detection of parasite coproantigens, respectively. Serum samples were also studied by the ES78 sandwich ELISA and an indirect ELISA to detect circulating antigens and antibodies, respectively. At the beginning of the study, 8 of 67 patients had patent infections and 59 had prepatent infections, which was determined by the recent consumption of lettuce contaminated with metacercariae of F. hepatica, the presence of clinical symptoms, and the absence of Fasciola eggs in their stools. Patients with prepatent infections were monitored by all techniques until patency. Circulating antigens were not detected in patients with patent infections. However, coproantigens were clearly detected in all patients with patent infections. On the other hand, 28.8% of patients with prepatent infections tested positive for circulating antigens and 81.4% tested positive for coproantigens in the first stool sample studied. Only two other coproantigen determinations were necessary to diagnose 93.2% of the patients. While circulating antigen levels diminished in all patients during the infection, coproantigen levels increased. The present study demonstrates that the ES78 sandwich ELISA is a better tool than parasitological examination for diagnosis of active early infection, since by the combination of the circulating-antigen detection assay and the coproantigen detection assay 91% of patients were able to be diagnosed at the beginning of the study. In contrast, a coprologic analysis repeated over several weeks was necessary to diagnose 100% of the patients.
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Affiliation(s)
- A M Espino
- Departamento de Parasitología, Instituto de Medicina Tropical "Pedro Kouri" (IPK), Ciudad de La Habana, Cuba.
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8
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Alberti E, Acosta A, Sarmiento ME, Hidalgo C, Vidal T, Fachado A, Fonte L, Izquierdo L, Infante JF, Finlay CM, Sierra G. Specific cellular and humoral immune response in Balb/c mice immunised with an expression genomic library of Trypanosoma cruzi. Vaccine 1998; 16:608-12. [PMID: 9569472 DOI: 10.1016/s0264-410x(97)00228-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
An expression genomic library of Trypanosoma cruzi (T. cruzi) constructed using pcDNA3 plasmid was used for the immunisation (25 micrograms) of Balb/c mice. Expression of T. cruzi antigens in the muscle of inoculated mice was detected by indirect immunofluorescence 7 days after immunisation. Specific IgG antibodies were significatively increased (P < 0.05) in animals that were reimmunized with 50 micrograms of the genomic library. An antigen specific lymphoproliferative response was detected in one animal of the group inoculated with one dose of the library.
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Affiliation(s)
- E Alberti
- Department of Protozoology, Tropical Medicine Institute Pedro Kouri, Ciudad Habana, Cuba
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9
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Díaz A, Espino AM, Marcet R, Otero O, Torres D, Finlay CM, Sarracent J. Partial characterization of the epitope on excretory-secretory products of Fasciola hepatica recognized by monoclonal antibody ES78. J Parasitol 1998; 84:55-61. [PMID: 9488338] [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: 02/06/2023] Open
Abstract
This report contains a partial characterization of the epitope recognized by monoclonal antibody (MAb) ES78 produced against excretory-secretory (ES) antigens of Fasciola hepatica. ES78 is currently used for the detection of ES antigens in serum and stool samples of cattle and humans with fasciolosis, using a highly sensitive and specific sandwich enzyme-linked immunosorbent assay (ELISA). The epitope was characterized by periodate oxidation, alkaline borohydride reduction, trichloroacetic acid precipitation, beta-mercaptoethanol treatment, and enzymatic proteolysis. These results, together with those of the 2-site ELISA, lectin immunoassays, and beta-galactosidase digestion, showed that MAb ES78 reacts with a partly protein/partly carbohydrate antigenic determinant that is found on several ES molecules of adult specimens of F. hepatica and contains at least 1 disulfide bond and beta-galactose probably as galactose-beta(1-3)-N-acetylgalactosamine disaccharide.
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Affiliation(s)
- A Díaz
- Departamento de Parasitología, Instituto de Medicina Tropical Pedro Kouri, Ciudad de la Habana, Cuba
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10
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Affiliation(s)
- A M Espino
- Departamento de Parasitología, Instituto de Medicina Tropical Pedro Kouri, Ciudad de la Habana, Cuba
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11
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Abstract
A monoclonal antibody-based sandwich immunoassay (mAb sandwich ELISA) was developed for the detection of Fasciola hepatica antigen in the faeces of cattle. The assay was applied to samples from 100 cattle infected with F hepatica, 56 animals with parasitologically proven infections of other parasites and 100 uninfected animals. F hepatica antigen was detected in all the faecal samples from animals with fasciolosis, but none of the samples from the uninfected animals or from those with other parasitic infections had significant levels of F hepatica antigens. The results indicate that the mAb sandwich ELISA is a rapid, simple and useful method for the diagnosis of active F hepatica infection in cattle.
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Affiliation(s)
- B E Duménigo
- Instituto Medicina Tropical Pedro Kourt, La Habana, Cuba
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12
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Abstract
Pinworm infection was prospectively studied during one year in 469 children attending three day care centers. Each child was examined at six months intervals using up to three perianal swabs with adhesive tape. Those found infected were treated with mebendazole. At the beginning of the study we found a prevalence of 28% that dropped to 13% and 12% in the following study periods. The reinfection rate was twice the incidence rate in both study periods. We also found a small percentage (10%) of the children reinfected in most or all study periods. There was a high correlation between reinfection and perianal itching. Our results add further knowledge to the epidemiology of intestinal parasites in day care centers.
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Affiliation(s)
- F A Núñez
- Instituto de Medicina Tropical Pedro Kouri, Ministerio de Salud Pública, Ciudad Habana, Cuba
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13
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de la Cruz AM, de Rojas V, Delgado J, Alonso A, Finlay CM. [The knowledge of the population about cholera]. Rev Cubana Med Trop 1996; 48:184-7. [PMID: 9805048] [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: 04/11/2023]
Abstract
In order to determine the impact of the educational campaign about cholera on the knowledge and believes of the population, a survey was made in 1993 among 1324 persons from 14 provinces and from Isla de la Juventud special municipality. 85% were 20-59 years old and 89% had an secondary basic or higher educational level. 69% had the minimum knowledge to face the disease, 90% would see a doctor if they had and suspicion, 72% knew that diarrhea is the main symptom of cholera, 54% new how it is transmitted 89% thought that they may be infected by drinking water, 54% understood the importance of giving liquids to the sick subject, and 78% realized the significance of washing their hands before eating anf cooking. It is concluded that even though our population has a general knowledge about the disease, due to the fact that our country is located in an endemic zone, health education must be reinforced, specifically those aspects connected with the communication and with the increase of liquids administration to the patients.
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14
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Finlay CM, Montada D. [Successful experience with the vector control courses in the provinces of Cuba]. Educ Med Salud 1995; 29:215-8. [PMID: 7555903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- C M Finlay
- Departamento de Parasitología, Instituto de Medicina Tropical Pedro Kouri, Ciudad de La Habana, Cuba
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15
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Montalvo AM, Espino AM, Escalante G, Finlay CM. [Study of the seroprevalence of toxocariasis in an infantile population in the City of Havana]. Rev Cubana Med Trop 1994; 46:156-8. [PMID: 9768255] [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: 04/11/2023]
Abstract
A serological study to detect antibodies to Toxocara canis in a group of 156 healthy children from City of Havana is reported for the first time in Cuba. An ELISA method was employed using excretion/secretion antigens obtained in our laboratory. Data on epidemiological factors surveyed in this group are presented. Positivity percentage was of 5.2%. Results are discussed.
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16
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Abstract
A sandwich enzyme-linked immunosorbent assay has been developed for the detection of Fasciola hepatica excretory secretory (ES) antigens in stool specimens of infected humans. The assay uses antibodies against F. hepatica ES antigens. A monoclonal antibody (ES78, mouse immunoglobulin G2a) was used to capture ES antigens, and a rabbit polyclonal antibody, peroxidase conjugate, was used to identify ES antigens. Thirteen of 14 patients with parasitological evidence of fascioliasis had a detectable concentration of ES antigens (more than 15 ng/ml). None of the stool specimens from controls and from patients with parasites other than F. hepatica showed a positive reaction, suggesting the absence of cross-reactions in this assay. When the 14 patients were retested 2 months after treatment, all of the specimens from the 11 parasitologically cured patients were negative by the antigen detection assay while the specimens from the 3 patients with persisting F. hepatica eggs in their stools remained positive.
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Affiliation(s)
- A M Espino
- Subdirección de Parasitología, Instituto Medicina Tropical Pedro Kouri (IPK), Havana, Cuba
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17
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Espino AM, Millán JC, Finlay CM. Detection of antibodies and circulating excretory-secretory antigens for assessing cure in patients with fascioliasis. Trans R Soc Trop Med Hyg 1992; 86:649. [PMID: 1287933 DOI: 10.1016/0035-9203(92)90174-b] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- A M Espino
- Instituto de Medicina Tropical Pedro Kouri, Ciudad de La Habana, Cuba
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18
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Fachado A, Fonte L, Alvarez A, Alberti E, Finlay CM. Antigens of Toxoplasma gondii in a AIDS patient urine detected by coagglutination. Mem Inst Oswaldo Cruz 1992; 87:303-4. [PMID: 1308573 DOI: 10.1590/s0074-02761992000200021] [Citation(s) in RCA: 2] [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: 12/26/2022] Open
Affiliation(s)
- A Fachado
- Departamento de Protozoología, Instituto de Medicina Tropical Pedro Kouri, Ciudad de La Habana, Cuba
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19
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Abstract
The effect of prophylactic doses of chloroquine on the phagocytic function of human monocytes was studied in young healthy male volunteers. They received placebo, 300, or 600 mg of chloroquine base/week for six weeks. In each subject, the phagocytic function was tested before and at the end of the chloroquine intake period. In the 600-mg chloroquine group, it was also tested six weeks after receiving the last dose. Chloroquine at both doses inhibited the phagocytosis of IgG-coated sheep red blood cells and of zymosan particles. The effect was more pronounced with the 600 mg dose of chloroquine. The phagocytic activity returned to normal values six weeks after the end of treatment.
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Affiliation(s)
- L M Osorio
- Departamento de Parasitologia, Instituto de Medicina Tropical Pedro Kouri (IPK), Havana, Cuba
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20
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Rojas L, Duménigo BE, Fonte L, Fachado A, Finlay CM. Identification of Dirofilaria immitis-infected dogs with a coagglutination assay. J Parasitol 1992; 78:166-8. [PMID: 1738064] [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: 12/28/2022] Open
Abstract
The presence of Dirofilaria immitis excretory-secretory (ES) products was detected in the urine of infected dogs using a coagglutination assay. Urine samples from 30 naturally infected dogs were positive. Seventeen of them were microfilaremic, whereas 13 had become amicrofilaremic after receiving 2 courses of diethylcarbamazine. Urine samples from 20 dogs infected with other parasites, Dipetalonema reconditum (7), Toxocara canis (5), and Ancylostoma caninum (8), and urine samples from 20 healthy dogs were negative. The assay detected 200 ng/ml or more of ES products. This assay is simple, easy to perform with minimum training, and requires no equipment. Therefore it should be useful to detect canine filariasis under field conditions.
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Affiliation(s)
- L Rojas
- Departamento de Protozoología, Instituto de Medicina Tropical Pedro Kourí, Ciudad de La Habana, Cuba
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21
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Espino AM, Marcet R, Finlay CM. Detection of circulating excretory secretory antigens in human fascioliasis by sandwich enzyme-linked immunosorbent assay. J Clin Microbiol 1990; 28:2637-40. [PMID: 2279994 PMCID: PMC268248 DOI: 10.1128/jcm.28.12.2637-2640.1990] [Citation(s) in RCA: 38] [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: 12/31/2022] Open
Abstract
We developed a sandwich enzyme-linked immunosorbent assay to detect circulating parasite antigen in humans with fascioliasis. The assay uses antibodies against Fasciola hepatica excretory secretory (ES) antigens. A monoclonal antibody was used to capture circulating ES antigens, and a human polyclonal antibody peroxidase conjugate was used to identify circulating ES antigens. Optimal dilutions of all reagents were determined by block titration. The antigen concentration in sera from patients was estimated by comparing the optical density at 492 nm of test sera with a standard curve. All of the serum samples from 25 patients with parasitological evidence of fascioliasis had a detectable antigen concentration (more than 10 ng/ml). None of the serum samples from 80 patients infected with parasites other than F. hepatica showed a positive reaction, suggesting the absence of cross-reactions in this assay.
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Affiliation(s)
- A M Espino
- Subdirección de Parasitología, Instituto Medicina Tropical Pedro Kouri, Havana, Cuba
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22
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Finlay CM. [Parasitology research at the "Pedro Kouri" Institute]. Rev Cubana Med Trop 1990; 42:165-6. [PMID: 2089501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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23
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Núñez Fernández F, Sanjurjo González ES, Finlay CM, Gálvez Oviedo D. [Single dose mebendazole for the treatment of Trichuris trichiura and Necator americanus in chemotherapeutic control campaigns in the communities]. Rev Cubana Med Trop 1989; 41:371-8. [PMID: 2701183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A study of intestinal parasitism is made in "Argelia Libre" community, Isle of Youth, by means of four coproparasitologic techniques: Kato Kratz, Ritchie, Direct, and Willis. Patients with geohelminths are divided into two groups of treatment: Group A, treated with 500 mg mebendazole in single doses and group B, treated with the classical scheme of 100 mg every 12 hours for three days. Results of treatment are expressed in terms of cure rates and percentage of egg-count reduction. When comparing schemes A and B, no significant differences are found (p less than 0.05). Due to its lower cost and easier administration, the single dosage scheme is recommended for massive chemotherapy of geohelminthiasis in the community.
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24
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Rojas L, Torres DR, Mediola BJ, Finlay CM. Detection of specific anti-giardia serum antibody by an immunofluorescence test in children with clinical giardiasis. Am J Trop Med Hyg 1989; 40:477-9. [PMID: 2658636 DOI: 10.4269/ajtmh.1989.40.477] [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: 01/02/2023] Open
Abstract
In 50 of 100 children with clinical giardiasis studied, the presence of Giardia lamblia was proven by stool and/or duodenal aspirate examination; the presence of the parasite was not demonstrated in the rest. Serum antibodies to G. lamblia were investigated in all children by an indirect immunofluorescent test (IIF) with G. lamblia trophozoites as antigen. It was found that all the children with positive duodenal aspirate had positive serology (titers greater than or equal to 1/32). The best correlation between parasitological and serological procedures were in the 1-5-year-old age group, and there was an age dependent increase of the antibody titer. Most of the parasitologically negative children were serologically negative. Our results support the use of IIF as a useful diagnostic procedure in the diagnosis of giardiasis in children.
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Affiliation(s)
- L Rojas
- Instituto de Medicina Tropical Pedro Kouri Ciudad de la Habana, Cuba
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25
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Espino AM, Duménigo BE, Fernández R, Finlay CM. Immunodiagnosis of human fascioliasis by enzyme-linked immunosorbent assay using excretory-secretory products. Am J Trop Med Hyg 1987; 37:605-8. [PMID: 3688313 DOI: 10.4269/ajtmh.1987.37.605] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.4] [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: 01/06/2023] Open
Abstract
In sera from patients with fascioliasis the enzyme-linked immunosorbent assay (ELISA) was used to detect antibody using excretory-secretory products (ES) from Fasciola hepatica adult worms. The specificity of ES-ELISA (with OD values greater than 0.38) allowed the differentiation among fascioliasis, schistosomiasis, clonorchiasis, and other human parasite infections.
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Affiliation(s)
- A M Espino
- Departamento de Helmintología, Instituto de Medicina Tropical Pedro Kourí (IPK), Ciudad de la Habana, Cuba
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Hernández Cué J, Finlay CM. [Effect of clofazimine on Fc receptors of peritoneal macrophages in the mouse]. Rev Cubana Med Trop 1987; 39:15-24. [PMID: 3321229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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27
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Hernández Cué J, Finlay CM. [Effects of clofazimine on complement 3 receptors in peritoneal macrophages in the mouse]. Rev Cubana Med Trop 1987; 39:25-31. [PMID: 3321230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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28
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Torres Idavoy D, Montalvo Alvarez AM, Finlay CM. [Effects of clofazimine on Leishmania promastigotes]. Rev Cubana Med Trop 1987; 39:33-8. [PMID: 3321231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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29
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Duménigo BE, Espino AM, Finlay CM. [Obtaining excretory-secretory antigens of Dirofilaria immitis microfilaria]. Rev Cubana Med Trop 1987; 39:13-22. [PMID: 3118432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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30
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Sarracent J, Finlay CM. In vivo effect of clofazimine in the lysosomal enzyme level and immune complex phagocytosis of mouse peritoneal macrophages. Int J Lepr Other Mycobact Dis 1984; 52:154-8. [PMID: 6539307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The effects of clofazimine on macrophages obtained from mice fed by gavage with various drug concentrations were studied. The results obtained demonstrated an increase in the activity of various lysosomal enzymes and in the amount of labeled immune complexes phagocytosed at drug concentrations of 1 mg/kg and 10 mg/kg body weight. This confirms and extends the effects reported by us of clofazimine's action on the lysosomal apparatus.
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Valdes-Portela A, Vazquez AM, Finlay CM. The effect of clofazimine on the plaque-forming cell response. LEPROSY REV 1983; 54:309-15. [PMID: 6668984 DOI: 10.5935/0305-7518.19830037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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32
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Sarracent J, Finlay CM. Phagocytosis and intracellular degradation of 125I-labelled immune complexes by Clofazimine treated macrophage cultures. Clin Exp Immunol 1982; 48:268-72. [PMID: 7083643 PMCID: PMC1536589] [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: 01/23/2023] Open
Abstract
Mouse peritoneal and calf alveolar macrophage cultures were exposed to various Clofazimine concentrations for 5 days. Cultures exposed to drug concentrations near the blood therapeutic level phagocytize and digest more immune complexes than control cultures. Our results allow us to suggest that the beneficial action of Clofazimine in lepromatous leprosy could be at least partially mediated by the removal and degradation of circulating immune complexes by macrophages.
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Sarracent J, Finlay CM. The action of Clofazimine on the level of lysosomal enzymes of cultured macrophages. Clin Exp Immunol 1982; 48:261-7. [PMID: 7083642 PMCID: PMC1536573] [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: 01/23/2023] Open
Abstract
Mouse peritoneal and calf alveolar macrophage cultures were exposed to various concentrations of Clofazimine, 3 (p-chloroanilino)-10-p-Chlorophenyl 2, 10-dihydro-2-isopropylimino, for 120 hr and an increase of four lysosomal enzymes were found with 0 . 3 micrograms/ml of the drug. In mouse peritoneal macrophage cultures, higher concentrations were toxic. Cycloheximide inhibited the lysosomal enzyme activity increase found. No change in enzymatic activity was observed when a lysosomal enriched granular fraction was incubated with various drug concentrations. Our results strongly suggest that Clofazimine at concentrations close to therapeutic serum levels induces de novo synthesis of lysosomal enzymes in macrophage cultures.
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Sarracent Pérez J, Finlay CM. [Inhibition of the selective release of lysosomal enzymes produced by clofazimine in macrophages in culture]. Rev Cubana Med Trop 1982; 34:3-10. [PMID: 6750712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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