1
|
Caravedo MA, Morales ML, Tanabe M, Lopez M, White AC, Cabada MM. Demographic Characteristics and Low Iron Status Markers Are Associated with Hemoglobin Levels and Anemia among Children Living at High Elevation in Cusco, Peru. Am J Trop Med Hyg 2024; 110:1014-1020. [PMID: 38531100 PMCID: PMC11066345 DOI: 10.4269/ajtmh.23-0666] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/06/2023] [Indexed: 03/28/2024] Open
Abstract
Anemia is a complex condition associated with diet, chronic infections, and blood loss. Children living at high altitudes have higher absolute hemoglobin levels due to hypoxemia. However, they are exposed to repeated infections and dietary limitations. We conducted a cross-sectional study to identify factors affecting the hemoglobin concentration in children living in high-altitude rural communities in the Anta province of Peru. All children 3-16 years of age attending public schools were invited to participate. We enrolled children 3-16 years old in schools and visited their homes to collect demographic, socioeconomic, medical history, and anthropometric data. Children provided blood and stool samples for complete blood counts, iron status markers, and helminth infection testing. Among the 2,000 children enrolled, the mean age was 9.9 (±3.4) years, 1,004 (50.2%) were female, and the median residence altitude was 3,398 (interquartile range 3,35-3,497) meters. The mean hemoglobin level was 15 (±1.15) mg/dL; 320 (16%) had anemia as defined by WHO. Children with anemia were more likely to have lower serum iron levels (odds ratio [OR] 2.8 [95% CI 2.2-3.6], P <0.001) and serum transferrin saturation (OR 2.8 [95% CI 2-3.9], P <0.001). Younger age (OR 0.85 [95% CI 0.82-0.89], P <0.001), stunting (OR 0.68 [95% CI 0.59-0.79], P <0.001), education of the mother (OR 0.94 [95% CI 0.91-0.98], P <0.005), and low eosinophils (OR 0.49 [95% CI 0.26-0.9], P = 0.022) were associated with anemia. Helminth infections were not associated with anemia. Anemia among children at high altitude is multifactorial, but iron deficiency is a contributing factor. Further studies are needed to evaluate iron status and anemia in children living at high altitudes.
Collapse
Affiliation(s)
- Maria A. Caravedo
- Division of Infectious Diseases, University of Texas Medical Branch, Galveston, Texas
| | - Maria Luisa Morales
- Sede Cusco – Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Melinda Tanabe
- Division of Infectious Diseases, University of Texas Medical Branch, Galveston, Texas
| | - Martha Lopez
- Sede Cusco – Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - A. Clinton White
- Division of Infectious Diseases, University of Texas Medical Branch, Galveston, Texas
| | - Miguel M. Cabada
- Division of Infectious Diseases, University of Texas Medical Branch, Galveston, Texas
- Sede Cusco – Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Cusco, Peru
| |
Collapse
|
2
|
Segura-Borrego MP, Martín-Gómez A, Ríos-Reina R, Cardador MJ, Morales ML, Arce L, Callejón RM. A non-destructive sampling method for food authentication using gas chromatography coupled to mass spectrometry or ion mobility spectrometry. Food Chem 2022; 373:131540. [PMID: 34799128 DOI: 10.1016/j.foodchem.2021.131540] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 05/11/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 11/04/2022]
Abstract
The study of volatile compounds obtained by gas chromatography (GC) coupled to mass spectrometry (MS) or ion mobility spectrometry (IMS) may be very useful to protect food quality, especially when using a non-destructive sampling method. In this work, the authentication of the highly appreciated dry-cured Iberian ham by those techniques was studied and compared. The results obtained show the suitability of a non-destructive sampling method coupled to headspace sampling (HS)-GC-IMS or HS-GC-MS to determine volatile markers in the feeding Iberian pig regime. Although both methods were suitable to differentiate the ham categories, HS-GC-IMS was more sensitive detecting a higher number of compounds than HS-GC-MS, which provided accurate qualitative results. The results of principal component analysis showed that ethanol, 2-propanol and 3-methylbutanol, identified by HS-GC-IMS, and 3-methylbutanal and heptane, identified by HS-GC-MS, could be considered potential markers to identify ham from different feeding regimes.
Collapse
Affiliation(s)
- M P Segura-Borrego
- Área de Nutrición y Bromatología, Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González n. 2, Sevilla 41012, España
| | - A Martín-Gómez
- Departamento de Química Analítica, Instituto de Química Fina y Nanoquímica, Edificio anexo Marie Curie, Universidad de Córdoba, Campus de Rabanales, Córdoba 14071, España
| | - R Ríos-Reina
- Área de Nutrición y Bromatología, Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González n. 2, Sevilla 41012, España.
| | - M J Cardador
- Departamento de Química Analítica, Instituto de Química Fina y Nanoquímica, Edificio anexo Marie Curie, Universidad de Córdoba, Campus de Rabanales, Córdoba 14071, España
| | - M L Morales
- Área de Nutrición y Bromatología, Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González n. 2, Sevilla 41012, España
| | - L Arce
- Departamento de Química Analítica, Instituto de Química Fina y Nanoquímica, Edificio anexo Marie Curie, Universidad de Córdoba, Campus de Rabanales, Córdoba 14071, España
| | - R M Callejón
- Área de Nutrición y Bromatología, Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González n. 2, Sevilla 41012, España
| |
Collapse
|
3
|
Linares M, López-Ejeda N, Álvarez P, Culebras E, Díaz E, García MT, Majano C, Morales ML, Rodríguez-García A, Rodríguez-Avial I, Utrilla CL, Valenzuela MV, Valderrama MJ. Service-Learning, Movies, and Infectious Diseases: Implementation of an Active Educational Program in Microbiology as a Tool for Engagement in Social Justice. Front Microbiol 2021; 12:589401. [PMID: 34267731 PMCID: PMC8276174 DOI: 10.3389/fmicb.2021.589401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 05/31/2021] [Indexed: 11/13/2022] Open
Abstract
Service-Learning is an educational methodology that allows student learning while addressing community needs. A program in microbiology and infectious diseases was implemented in Universidad Complutense de Madrid, Spain. University lecturers, clinical microbiologists, doctorate students, and undergraduates from several Bachelor Degrees and courses worked in an interdisciplinary team along with social institutions that attend disadvantaged persons. Using commercial movies that deal with infectious diseases, the students learn clinical microbiology, prepare divulgation materials, visit social centers to accompany, and help others to know about illnesses and prevention. The program was developed through two academic years and involved 58 voluntary students, 13 teachers and tutors, and 4 social entities as community partners. Postsurvey evaluation of the program revealed a highly satisfactory achievement of goals: acquiring scientific and personal competencies by university students, including critical analysis and science diffusion, solving problems or collaborative team working, and contributing, together with the tutors, to the social responsibility of the university.
Collapse
Affiliation(s)
- M Linares
- Department Biochemistry and Molecular Biology, Faculty of Pharmacy, Universidad Complutense de Madrid, Madrid, Spain.,Department of Translational Hematology, Instituto de Investigación Hospital 12 de Octubre, Madrid, Spain
| | - N López-Ejeda
- Department of Biodiversity, Ecology and Evolution, Faculty of Biology, Universidad Complutense de Madrid, Madrid, Spain
| | - P Álvarez
- Department of Cellular Biology, Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - E Culebras
- Hospital Clínico San Carlos, Madrid, Spain
| | - E Díaz
- Higher Technical School of Telecommunications Engineering, Universidad Politécnica de Madrid, Madrid, Spain
| | - M T García
- Department of Genetics, Physiology and Microbiology, Faculty of Biology, Universidad Complutense de Madrid, Madrid, Spain
| | - C Majano
- Department of Genetics, Physiology and Microbiology, Faculty of Biology, Universidad Complutense de Madrid, Madrid, Spain
| | - M L Morales
- Department of Translational Hematology, Instituto de Investigación Hospital 12 de Octubre, Madrid, Spain
| | - A Rodríguez-García
- Department of Translational Hematology, Instituto de Investigación Hospital 12 de Octubre, Madrid, Spain
| | | | - C L Utrilla
- Department of Genetics, Physiology and Microbiology, Faculty of Biology, Universidad Complutense de Madrid, Madrid, Spain
| | - M V Valenzuela
- Department of Genetics, Physiology and Microbiology, Faculty of Biology, Universidad Complutense de Madrid, Madrid, Spain
| | - M J Valderrama
- Department of Genetics, Physiology and Microbiology, Faculty of Biology, Universidad Complutense de Madrid, Madrid, Spain
| |
Collapse
|
4
|
Webb CM, Morales ML, Lopez M, Baca-Turpo B, Arque E, White AC, Cabada MM. Stunting in pre-school and school-age children in the Peruvian highlands and its association with Fasciola infection and demographic factors. PLoS Negl Trop Dis 2021; 15:e0009519. [PMID: 34153050 PMCID: PMC8248620 DOI: 10.1371/journal.pntd.0009519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 07/01/2021] [Accepted: 05/30/2021] [Indexed: 11/18/2022] Open
Abstract
Fascioliasis is a zoonotic trematode infection that is endemic in the highlands of Peru. Chronic fascioliasis can be asymptomatic and remain undiagnosed for years. Chronic malnutrition in children, as manifested by stunting, leads to delayed cognitive development and lost productivity. We hypothesized that fascioliasis is among the factors associated with stunting in children from endemic areas. We conducted a cross-sectional study among children attending pre-school and school in 26 communities in the Anta province in the Cusco region of Peru. We conducted interviews to collect information on demographic, socioeconomic, and medical history. Blood was collected and tested for complete cell count and FAS2 ELISA for Fasciola antibodies. Three stool samples per participant were tested for parasites by Kato-Katz and Lumbreras rapid sedimentation methods. Chronic fascioliasis was determined by the presence of ova in stool. Children's height, weight, and age were recorded and used to calculate height for age Z scores (HAZ). Three thousand children participated in the study. Nine percent (264) of children had at least one positive test for Fasciola infection, 6% (164) had chronic fascioliasis, and 3% (102) had only positive antibody tests. The median HAZ was -1.41 (IQR: -2.03 to -0.81) and was similar in males and females. Twenty six percent (776) of children had stunting with HAZ < -2. Children with chronic fascioliasis had a lower median HAZ than children without Fasciola (-1.54 vs. -1.4, p = 0.014). History of treatment for malnutrition, history of treatment for anemia, having other helminths in stool, lower socioeconomic score, living at a higher elevation, and fewer years of schooling of both parents were associated with a lower HAZ score. In a multiple regression analysis, older age and a lower socioeconomic score were associated with a lower HAZ score. While fascioliasis and other helminths were associated with lower HAZ, they were not independent of the socioeconomic score.
Collapse
Affiliation(s)
- Camille M. Webb
- Division of Infectious Diseases, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, United States of America
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Maria Luisa Morales
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco, Peru
- UPCH–UTMB Collaborative Research Center—Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Martha Lopez
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco, Peru
- UPCH–UTMB Collaborative Research Center—Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Benicia Baca-Turpo
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco, Peru
- UPCH–UTMB Collaborative Research Center—Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Eulogia Arque
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco, Peru
- UPCH–UTMB Collaborative Research Center—Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - A. Clinton White
- Division of Infectious Diseases, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, United States of America
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco, Peru
- UPCH–UTMB Collaborative Research Center—Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Miguel M. Cabada
- Division of Infectious Diseases, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, United States of America
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco, Peru
- UPCH–UTMB Collaborative Research Center—Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
- * E-mail:
| |
Collapse
|
5
|
Caravedo MA, White AC, Morales ML, Lopez M, Tanabe MB, Baca-Turpo B, Arque E, Madrid D, Vallabh P, Bascope R, Cabada MM. Comparison of Liver Condemnation and Bile Microscopy As Tools to Estimate Fasciola hepatica Prevalence and Burden in the Anta Province of Cusco in Peru. Vector Borne Zoonotic Dis 2021; 21:707-712. [PMID: 34129405 DOI: 10.1089/vbz.2020.2753] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Fascioliasis is a zoonotic infection linked to significant economic losses in the livestock industry. Infection prevalence and estimated financial burden vary across locations owing to different diagnostic tests used. The accuracy of liver condemnation to estimate the prevalence and costs of fascioliasis has seldom been evaluated. We performed a pilot study to determine the prevalence and burden of Fasciola hepatica infection among cattle slaughtered at the municipal abattoir in the Anta province of the Cusco highlands in Peru. We compared liver condemnation with bile microscopy for the diagnosis of infection and prediction of carcass weight. Data were collected from 2009 slaughtered cattle for 1 year. The overall prevalence of Fasciola infection by bile microscopy was 62.5% (1247/2009). A higher prevalence was observed after the rainy season from March to August than from September to February (p < 0.01). Fascioliasis prevalence during the first 6 months was 77.4% (714/923), combining the results of condemnation and microscopy. Bile microscopy diagnosed more infections than liver condemnation (62.7% (579/923) versus 55.4% (511/923), McNemar test p < 0.01). The agreement of the bile microscopy testing with liver condemnation was fair (κ = 0.247). Animal age, gender, breed, and liver condemnation predicted carcass weight [F (df 4, 704) = 61.1, p < 0.001]. Liver condemnation and bile microscopy are complementary tools for evaluation of the prevalence and burden of fascioliasis in livestock. Large scale studies are warranted to confirm our results.
Collapse
Affiliation(s)
- Maria Alejandra Caravedo
- Division of Infectious Disease, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA
| | - A Clinton White
- Division of Infectious Disease, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA.,Cusco Branch-Tropical Medicine Institute, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Maria Luisa Morales
- Cusco Branch-Tropical Medicine Institute, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Martha Lopez
- Cusco Branch-Tropical Medicine Institute, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Melinda Barbara Tanabe
- Division of Infectious Disease, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA
| | - Benicia Baca-Turpo
- Cusco Branch-Tropical Medicine Institute, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Eulogia Arque
- Cusco Branch-Tropical Medicine Institute, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Daniela Madrid
- Cusco Branch-Tropical Medicine Institute, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Prithvi Vallabh
- Division of Infectious Disease, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA
| | - Ruben Bascope
- Zoonosis Unit, Direccion Regional de Salud del Cusco, Ministerio de Salud, Cusco, Peru
| | - Miguel Mauricio Cabada
- Division of Infectious Disease, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA.,Cusco Branch-Tropical Medicine Institute, Universidad Peruana Cayetano Heredia, Cusco, Peru
| |
Collapse
|
6
|
Pineda-Reyes R, Lahham R, Quinones S, Glenn SJ, Morales ML, Mozo K, Cabada MM. Incidence of acute mountain sickness and healthcare related behaviors among travelers to Cusco, Peru. Travel Med Infect Dis 2020; 37:101859. [PMID: 32860960 PMCID: PMC7449976 DOI: 10.1016/j.tmaid.2020.101859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 10/26/2022]
Affiliation(s)
- Roberto Pineda-Reyes
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center - Cusco, Jr. Jose Carlos Mariategui J-6, Wanchaq, 08002, Cusco, Peru; Sede Cusco - Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, San Martin de Porres, 15102, Lima, Peru.
| | - Rana Lahham
- School of Medicine, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555, USA.
| | - Sophia Quinones
- School of Medicine, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555, USA.
| | - Spencer J Glenn
- School of Medicine, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555, USA.
| | - Maria Luisa Morales
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center - Cusco, Jr. Jose Carlos Mariategui J-6, Wanchaq, 08002, Cusco, Peru; Sede Cusco - Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, San Martin de Porres, 15102, Lima, Peru.
| | - Karen Mozo
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center - Cusco, Jr. Jose Carlos Mariategui J-6, Wanchaq, 08002, Cusco, Peru; Sede Cusco - Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, San Martin de Porres, 15102, Lima, Peru.
| | - Miguel M Cabada
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center - Cusco, Jr. Jose Carlos Mariategui J-6, Wanchaq, 08002, Cusco, Peru; Sede Cusco - Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, San Martin de Porres, 15102, Lima, Peru; Division of Infectious Disease, Department of Internal Medicine, University of Texas Medical Branch, 301 University Blvd., Route 0435, Galveston, TX, 77555, USA.
| |
Collapse
|
7
|
Morales ML, Lopez M, Ly P, Anjum S, Fernandez-Baca MV, Valdivia-Rodriguez AM, Mamani-Licona FM, Baca-Turpo B, Farfan-Gonzales N, Chaman-Illanes Y, Cabada MM. Strongyloides stercoralis Infection at Different Altitudes of the Cusco Region in Peru. Am J Trop Med Hyg 2020; 101:422-427. [PMID: 31264557 DOI: 10.4269/ajtmh.18-0568] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Strongyloides stercoralis affects 30-100 million people worldwide. The burden is underestimated because of the paucity of studies, limited geographical areas surveyed, and poor quality of diagnostic tests. This study aimed at determining the epidemiology of strongyloidiasis using sensitive microscopy testing in rural populations living at different altitudes in Cusco, Peru. Data were collected from subjects aged > 3 years living in Quellouno (elevation 2,600 ft) and Limatambo (elevation 8,379 ft) districts. Subjects provided one fresh stool sample and answer a standardized questionnaire. Fresh stool was tested on site using the Baermann's test and agar plate culture. Formalin-preserved stool was tested by rapid sedimentation. Eighty percent (585/715) of eligible subjects consented to participate; after excluding subjects with missing data, 65% (462/715) were included. Fifty-five percentage were female; the median age was 33 years (interquartile range 13-52), and 72% had government health insurance. Half had intestinal parasites, and Strongyloides was the most common (24.5%) followed by Giardia (15.5%), Blastocystis (14.9%), and hookworm (11.5%). The agar plate culture detected more cases of Strongyloides than Baermann's or sedimentation tests. Strongyloides infection was more common at low altitude (26.4%) than at high altitude (18.6%), but the difference was not statistically significant (P = 0.08). Older age, walking barefoot, bathing in rivers/streams, and using municipal sewage were associated with strongyloidiasis. Strongyloides was the most prevalent parasite in the areas studied and was associated with demographic, socioeconomic, and sanitary factors.
Collapse
Affiliation(s)
- Maria Luisa Morales
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch, Collaborative Research Center-Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Martha Lopez
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch, Collaborative Research Center-Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Priscilla Ly
- School of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Seher Anjum
- Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Martha Vanessa Fernandez-Baca
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch, Collaborative Research Center-Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Angela Maria Valdivia-Rodriguez
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch, Collaborative Research Center-Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Frecia Maribel Mamani-Licona
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch, Collaborative Research Center-Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Benicia Baca-Turpo
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch, Collaborative Research Center-Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru
| | - Nedhy Farfan-Gonzales
- Sede Administrativa de la Red de Servicios de Salud Cusco Norte, Ministerio de Salud, Cusco, Peru
| | - Yeshica Chaman-Illanes
- Centro de Salud de Putucusi, Red de Servicios de Salud Cusco Norte, Ministerio de Salud, Cusco, Peru
| | - Miguel Mauricio Cabada
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch, Collaborative Research Center-Cusco, Universidad Peruana Cayetano Heredia, Cusco, Peru.,Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas
| |
Collapse
|
8
|
Cabada MM, Morales ML, Webb CM, Yang L, Bravenec CA, Lopez M, Bascope R, White AC, Gotuzzo E. Socioeconomic Factors Associated with Fasciola hepatica Infection Among Children from 26 Communities of the Cusco Region of Peru. Am J Trop Med Hyg 2019; 99:1180-1185. [PMID: 30226136 DOI: 10.4269/ajtmh.18-0372] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Fasciola hepatica is the most widely distributed trematode-affecting humans. The Andes Mountains are highly endemic for fascioliasis. We report results of a cross-sectional study evaluating the epidemiology of Fasciola among children in 26 agricultural communities in the Cusco region of Peru. Children 3 to 16 years old were enrolled in preschools and schools. Blood from participants was tested for complete blood counts, transaminases, and Fasciola antibodies. Stool samples were tested for Fasciola and other parasites. A total of 2,515 children were included in the analysis and the mean age was 9.6 years (±3.6). Ten percent (253) of the children had at least one positive test for Fasciola, 6% had chronic infection, and 0.4% acute infection. The rest of the subjects had only antibodies against Fasciola. The prevalence of infection varied from 0% to 20% between communities. Children with evidence of Fasciola exposure were older, lived at higher altitudes, and had a lower socioeconomic status than children without infection. The logistic regression analysis showed that children from Ancahuasi district, older children, and children with higher measures of poverty were more likely to have Fasciola exposure. Fascioliasis is common in the Cusco region and associated with poverty. However, the distribution varies markedly between communities.
Collapse
Affiliation(s)
- Miguel M Cabada
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco Branch, Peru.,Infectious Diseases Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Maria Luisa Morales
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco Branch, Peru
| | - Camille M Webb
- Infectious Diseases Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Logan Yang
- School of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Chelsey A Bravenec
- School of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Martha Lopez
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco Branch, Peru
| | - Ruben Bascope
- Zoonosis Unit, Direccion Regional de Salud del Cusco, Ministerio de Salud, Cusco, Peru
| | - A Clinton White
- Infectious Diseases Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Eduardo Gotuzzo
- Alexander von Humboldt Tropical Medicine Institute, Department of Medicine, Universidad Peruana Cayetano Heredia, Cusco Branch, Peru
| |
Collapse
|
9
|
Morales ML, Callejón RM, Ordóñez JL, Troncoso AM, García-Parrilla MC. Comparative assessment of software for non-targeted data analysis in the study of volatile fingerprint changes during storage of a strawberry beverage. J Chromatogr A 2017; 1522:70-77. [PMID: 28969903 DOI: 10.1016/j.chroma.2017.09.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 04/03/2017] [Revised: 07/27/2017] [Accepted: 09/23/2017] [Indexed: 01/17/2023]
Abstract
Five free software packages were compared to assess their utility for the non-targeted study of changes in the volatile profile during the storage of a novel strawberry beverage. AMDIS coupled to Gavin software turned out to be easy to use, required the minimum handling for subsequent data treatment and its results were the most similar to those obtained by manual integration. However, AMDIS coupled to SpectConnect software provided more information for the study of volatile profile changes during the storage of strawberry beverage. During storage, volatile profile changed producing the differentiation among the strawberry beverage stored at different temperatures, and this difference increases as time passes; these results were also supported by PCA. As expected, it seems that cold temperature is the best way of preservation for this product during long time storage. Variable Importance in the Projection (VIP) and correlation scores pointed out four volatile compounds as potential markers for shelf-life of our strawberry beverage: 2-phenylethyl acetate, decanoic acid, γ-decalactone and furfural.
Collapse
Affiliation(s)
- M L Morales
- Área de Nutrición y Bromatología, Dpto. Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla. C/P. García González n°2, E-41012, Sevilla, España.
| | - R M Callejón
- Área de Nutrición y Bromatología, Dpto. Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla. C/P. García González n°2, E-41012, Sevilla, España
| | - J L Ordóñez
- Área de Nutrición y Bromatología, Dpto. Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla. C/P. García González n°2, E-41012, Sevilla, España
| | - A M Troncoso
- Área de Nutrición y Bromatología, Dpto. Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla. C/P. García González n°2, E-41012, Sevilla, España
| | - M C García-Parrilla
- Área de Nutrición y Bromatología, Dpto. Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla. C/P. García González n°2, E-41012, Sevilla, España
| |
Collapse
|
10
|
Tamarozzi F, Hou A, Morales ML, Giordani MT, Vilca F, Mozo K, Bascope R, White AC, Brunetti E, Chen L, Cabada MM. Prevalence and Risk Factors for Human Cystic Echinococcosis in the Cusco Region of the Peruvian Highlands Diagnosed Using Focused Abdominal Ultrasound. Am J Trop Med Hyg 2017; 96:1472-1477. [PMID: 28719254 DOI: 10.4269/ajtmh.16-0882] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
AbstractLatin America is among the highly endemic regions for cystic echinococcosis (CE). In Peru, an estimated 1,139 disability-adjusted life years are lost annually from surgical treatment of CE. This is comparable with the combined total for Argentina, Brazil, Uruguay, and Chile. The prevalence of human infection has been investigated in the central Peruvian Andes, but there are no community-based screening data from other regions of Peru. We carried out a population survey in January 2015 using abdominal ultrasound to estimate the prevalence of abdominal CE in the Canas and Canchis provinces, in the Cusco region of Peru. Among 1,351 subjects screened, 41 (3%) had CE. There was significant variation between communities with similar socioeconomic features in a small geographical area. A history of CE was reported by 4.1% of the screened subjects, among whom 30.3% still had CE on ultrasound. Among patients reporting previous CE treatment, 14.9% had CE in active stages. Limited education, community of residence, and knowing people with CE in the community were associated with CE. These results demonstrate a significant burden of CE in the region and suggest the need for further investigations, control activities, and optimization of clinical management for CE in this area.
Collapse
Affiliation(s)
- Francesca Tamarozzi
- WHO Collaborating Centre for Clinical Management of Cystic Echinococcosis, Pavia, Italy.,Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Amy Hou
- Department of Medicine, Mount Auburn Hospital, Cambridge, Massachusetts
| | - Maria Luisa Morales
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center in Cusco, Cusco, Peru
| | | | - Freddy Vilca
- Hospital Alfredo Callo Rodriguez de Sicuani, Cusco, Peru
| | - Karen Mozo
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center in Cusco, Cusco, Peru
| | - Ruben Bascope
- Programa de Control de Enfermedades Zoonoticas, Direccion Regional de Salud Cusco, Cusco, Peru
| | - A Clinton White
- Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Enrico Brunetti
- Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy.,WHO Collaborating Centre for Clinical Management of Cystic Echinococcosis, Pavia, Italy.,Division of Infectious and Tropical Diseases, San Matteo Hospital Foundation, Pavia, Italy
| | - Lin Chen
- Travel Medicine Center, Mount Auburn Hospital, Cambridge, Massachusetts.,Harvard Medical School, Boston, Massachusetts
| | - Miguel M Cabada
- Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas.,Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center in Cusco, Cusco, Peru
| |
Collapse
|
11
|
Morales ML, Fierro-Risco J, Callejón RM, Paneque P. Monitoring volatile compounds production throughout fermentation by Saccharomyces and non- Saccharomyces strains using headspace sorptive extraction. J Food Sci Technol 2017; 54:538-557. [PMID: 28242953 DOI: 10.1007/s13197-017-2499-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/07/2016] [Accepted: 01/18/2017] [Indexed: 11/29/2022]
Abstract
Currently, there is a growing interest in the use of non-Saccharomyces yeast to enhance the aromatic quality of wine, with pure or mixed cultures, as well as sequential inoculation. Volatile components of wines were closely related to their sensory quality. Hence, to study the evolution of volatile compounds during fermentation was of great interest. For this, sampling methods that did not alter the volume of fermentation media were the most suitable. This work reports the usefulness of headspace sorptive extraction as non-invasive method to monitor the changes in volatile compounds during fermentation. This method allowed monitoring of 141 compounds throughout the process of fermentation by Saccharomyces cerevisiae and Lachancea thermotolerans strains. Both strains showed a similar ability to ferment a must with high sugar content. The S. cerevisiae strain produced higher amount of volatile compounds especially esters that constitutes fruity aroma than L. thermotorelans.
Collapse
Affiliation(s)
- M L Morales
- Área de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Sevilla, C/P. García González nº 2, 41012 Seville, Spain
| | - J Fierro-Risco
- Dpto. Genética, Facultad de Biología, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Seville, Spain
| | - R M Callejón
- Área de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Sevilla, C/P. García González nº 2, 41012 Seville, Spain
| | - P Paneque
- Área de Edafología y Química Agrícola, Facultad de Química, Universidad de Sevilla, C/P. García González nº 1, 41012 Seville, Spain
| |
Collapse
|
12
|
Cabada MM, Morales ML, Lopez M, Reynolds ST, Vilchez EC, Lescano AG, Gotuzzo E, Garcia HH, White AC. Hymenolepis nana Impact Among Children in the Highlands of Cusco, Peru: An Emerging Neglected Parasite Infection. Am J Trop Med Hyg 2016; 95:1031-1036. [PMID: 27672206 DOI: 10.4269/ajtmh.16-0237] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 08/05/2016] [Indexed: 11/07/2022] Open
Abstract
Hymenolepis nana is the most common cestode infection in the world. However, limited information is available regarding its impact on affected populations. We studied the epidemiology and symptoms associated with hymenolepiasis among children 3-16 years old in 16 rural communities of the highlands of the Cusco region in Peru. Information on demographics, socioeconomic status, symptoms as reported by parents, and parasitological testing was obtained from the database of an ongoing Fasciola hepatica epidemiologic study. A total of 1,230 children were included in the study. Forty-five percent were infected with at least one pathogenic intestinal parasite. Giardia spp. (22.9%) was the most common, followed by Hymenolepis (17.4%), Fasciola (14.1%), Ascaris lumbricoides (6.1%), and Strongyloides stercoralis (2%). The prevalence of Hymenolepis infection varied by community, by other parasitic infections, and by socioeconomic status. However, only years of education of the mother, use of well water, and age less than 10 years were associated with Hymenolepis infection in the multivariate analysis. Hymenolepis nana infection was associated with diarrhea, jaundice, headaches, fever, and fatigue. Children with > 500 eggs/g of stool were more likely to have symptoms of weight loss, jaundice, diarrhea, and fever. Hymenolepis nana infection and age were the only factors retained in the multivariate analysis modeling diarrhea. Hymenolepiasis is a common gastrointestinal helminth in the Cusco region and is associated with significant morbidity in children in rural communities. The impact caused by the emergence of Hymenolepis as a prevalent intestinal parasite deserves closer scrutiny.
Collapse
Affiliation(s)
- Miguel M Cabada
- Infectious Diseases Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas. .,Universidad Peruana Cayetano Heredia-University of Texas Medical Branch Collaborative Research Center-Cusco, Cusco, Peru
| | - Maria Luisa Morales
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch Collaborative Research Center-Cusco, Cusco, Peru
| | - Martha Lopez
- Universidad Peruana Cayetano Heredia-University of Texas Medical Branch Collaborative Research Center-Cusco, Cusco, Peru
| | - Spencer T Reynolds
- Infectious Diseases Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Elizabeth C Vilchez
- Infectious Diseases Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Andres G Lescano
- School of Public Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Eduardo Gotuzzo
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Hector Hugo Garcia
- Departamento de Microbiologia, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - A Clinton White
- Infectious Diseases Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| |
Collapse
|
13
|
Lopez M, Morales ML, Konana M, Hoyer P, Pineda-Reyes R, White AC, Garcia HH, Lescano AG, Gotuzzo E, Cabada MM. Kato-Katz and Lumbreras rapid sedimentation test to evaluate helminth prevalence in the setting of a school-based deworming program. Pathog Glob Health 2016; 110:130-4. [PMID: 27376503 PMCID: PMC4984960 DOI: 10.1080/20477724.2016.1187361] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The sensitivity of the Kato-Katz test is suboptimal for the evaluation of intestinal helminth prevalence. Moreover, during mass deworming, as helminth egg burden decreases, the sensitivity is likely to decrease. The Lumbreras rapid sedimentation (Lumbreras) is a low-cost non-quantitative test, but may provide useful information in low burden areas. We compared the prevalence of intestinal helminth infections assessed by the Kato-Katz and the Lumbreras rapid sedimentation test on 3 stool specimens from each of 1083 children. The sensitivities were compared using the McNemar paired test. Using the combined outcome of the 3 different stool tests as the standard, Kato-Katz had lower sensitivity than Lumbreras rapid sedimentation tests for Ascaris lumbricoides (85.1% vs. 95.1%, p = 0.03), Hymenolepis nana (77.7% vs. 97.9%, p < 0.01), Trichuris trichura (41.7% vs. 100%, p = 0.01), hookworm (0% vs. 100%, p = 0.01), and Strongyloides stercoralis (0% vs. 88%, p < 0.01). Kato-Katz demonstrated significantly lower sensitivity, missing most T. trichiura, hookworm, and S. stercoralis infections. The combination of Kato-Katz and Lumbreras rapid sedimentation tests enables the detection of more intestinal helminths infections in post-deworming low prevalence areas.
Collapse
Affiliation(s)
- Martha Lopez
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
| | - Maria Luisa Morales
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
| | - Monisha Konana
- School of Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Paige Hoyer
- School of Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Roberto Pineda-Reyes
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
| | - Arthur Clinton White
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
- Infectious Disease Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Hector Hugo Garcia
- Cysticercosis Working Group in Peru, Lima, Peru
- Faculty of Science and Philosophy, Infectious Diseases Laboratory Research-LID, Alberto Cazorla Talleri, Universidad Peruana Cayetano Heredia, Lima, Peru
- Cysticercosis Unit, Instituto de Ciencias Neurologicas, Lima, Peru
| | - Andres Guillermo Lescano
- School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
- US Naval Medical Research Unit No. 6 (NAMRU-6), Lima, Peru
| | - Eduardo Gotuzzo
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Miguel Mauricio Cabada
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
- Infectious Disease Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| |
Collapse
|
14
|
Callejón RM, Troncoso AM, Morales ML. Determination of amino acids in grape-derived products: a review. Talanta 2010; 81:1143-52. [PMID: 20441877 DOI: 10.1016/j.talanta.2010.02.040] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Revised: 02/10/2010] [Accepted: 02/13/2010] [Indexed: 10/19/2022]
Abstract
The amino acids present in foods and beverages affect the quality of these products and they play an important role in enology. Amino acids are consumed by yeasts as a source of nitrogen during alcoholic fermentation and are precursors of aroma compounds. In this review various chromatographic methodologies for the determination of amino acids are described, and specific applications for the analysis of amino acid content are discussed. Amino acids usually need to be derivatized to make them more detectable. Several derivatizing reagents have been employed for the determination of amino acids in enological applications, and each has its advantages and disadvantages.
Collapse
Affiliation(s)
- R M Callejón
- Area de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Sevilla, C/P. García González n degrees 2, Sevilla, Spain.
| | | | | |
Collapse
|
15
|
Grillo CA, Mirífico MV, Morales ML, Reigosa MA, de Mele MFL. Assessment of cytotoxic and cytogenetic effects of a 1,2,5-thiadiazole derivative on CHO-K1 cells. Its application as corrosion inhibitor. J Hazard Mater 2009; 170:1173-1178. [PMID: 19556056 DOI: 10.1016/j.jhazmat.2009.05.107] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Revised: 05/15/2009] [Accepted: 05/19/2009] [Indexed: 05/28/2023]
Abstract
This work focuses on the possible use of phenanthro[9,10-c]-1,2,5-thiadiazole 1,1-dioxide (TDZ) as a harmless corrosion inhibitor. TDZ range-dose providing minimum adverse effects to the environment and human health, with satisfactory corrosion-inhibiting properties was evaluated. Cytotoxicity and genotoxicity of TDZ at 0.57-12.50 microM concentration range were tested by neutral red, chromosomal aberrations, mitotic index, and colony formation assays. Results showed a significant increase of chromatid-type aberrations for the highest concentration of TDZ assayed (12.50 microM). Additionally, a reduction in the proliferative rate for lower concentrations was detected by the MI assay. We concluded that TDZ should be used at concentrations lower than 1.16 microM. Corrosion assays performed showed good inhibition effect (ca. 50%) at low (0.65 microM) TDZ concentration. Consequently, our results indicated that TDZ induced a time- and dose-dependent genotoxic and cytotoxic response on CHO-K1 cells. Short assays should be complemented with long exposure tests to simulate chronic contact with TDZ since lower threshold levels may be found for shorter exposures and a wrong safety range could be determined.
Collapse
Affiliation(s)
- C A Grillo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA, CCT La Plata-CONICET), Facultad de Ciencias Exactas, Departamento de Química, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | | | | | | | | |
Collapse
|
16
|
Callejon RM, Clavijo A, Ortigueira P, Troncoso AM, Paneque P, Morales ML. Volatile and sensory profile of organic red wines produced by different selected autochthonous and commercial Saccharomyces cerevisiae strains. Anal Chim Acta 2009; 660:68-75. [PMID: 20103145 DOI: 10.1016/j.aca.2009.09.040] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 09/21/2009] [Accepted: 09/26/2009] [Indexed: 11/29/2022]
Abstract
Organic wines were produced at pilot scale to select the best autochthonous and commercial yeast strains to obtain wines with high organoleptic qualities. We tested the behaviour of five S. cerevisiae yeast strains and determined their volatile composition and organoleptic characteristics by sensory analysis. A total of 51 volatile compounds were quantified in the wines produced. The concentration of most of the volatile compounds was significantly influenced depending on which yeast strain was inoculated. The differences observed in the volatile composition of the wines appear to be quantitative rather than qualitative. In general, acetals were the most abundant group of volatile compounds in all the samples studied, followed by alcohols without ethanol. The highest contents of volatile compounds were found in two of the wines produced by autochthonous yeast strains. The results obtained in the sensory analysis suggest that autochthonous yeast produced wines of higher organoleptic quality because this sample gave the highest value for the general impression attribute.
Collapse
Affiliation(s)
- R M Callejon
- Area de Nutrición y Bromatología, Facultad de Farmacia, University of Sevilla, C/P. García González n degrees 2 E-41012 Seville, Spain.
| | | | | | | | | | | |
Collapse
|
17
|
del M López Rey M, Morales ML, Rabadán ME, Sánchez S, Sánchez Y, Sánchez AM. [Mortality and birth in Toledo]. Rev Enferm 1983; 6:37-41. [PMID: 6556722] [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: 04/05/2023]
|
18
|
|
19
|
Davidson AR, Jaccard JJ, Triandis HC, Morales ML, Diaz-guerrero R. Cross-Cultural Model Testing: Toward a Solution of the Etic-Emic Dilemma. International Journal of Psychology 1976. [DOI: 10.1080/00207597608247343] [Citation(s) in RCA: 119] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|