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Jaramillo C, Nazario-Toole A, Xia H, Adams T, Josey M. Luminal-Type Invasive Carcinoma in Association With Microglandular Adenosis/Atypical Microglandular Adenosis: A Case Report and Molecular Comparison. Cureus 2023; 15:e37198. [PMID: 37159793 PMCID: PMC10163665 DOI: 10.7759/cureus.37198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2023] [Indexed: 04/08/2023] Open
Abstract
Microglandular adenosis (MGA) is a proliferative breast lesion composed of small, uniform glands lacking a myoepithelial cell layer while still invested by the basement membrane. The glands percolate haphazardly through the breast parenchyma rather than maintaining a lobular architecture, typical of other forms of adenosis.MGA is a benign lesion though atypical forms have been well described, often in close association with carcinoma. MGA, atypical MGA (AMGA), and the vast majority of MGA-associated carcinomas (MGACA) are negative for estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor 2 (HER2) by immunohistochemistry. In light of these findings and early molecular studies, MGA is hypothesized to represent a clonal process and nonobligate precursor of basal-type breast carcinomas. We present the case of a 58-year-old woman and the first published molecular comparison of a luminal-type invasive ductal carcinoma with its associated MGA/AMGA. Analysis of small nucleotide variants (SNVs) revealed that 63% of the SNVs identified in the MGA were present in the AMGA while only 10% of them were present in the MGACA, suggesting a direct relationship between MGA and AMGA but not MGA and MGACA.
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2
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Jaramillo C, Adams T, Shah S, Miller C, Teschan N. Diagnostic Dilemma of a Widely Metastatic Gastric-type Cervical Adenocarcinoma. Am J Clin Pathol 2022. [DOI: 10.1093/ajcp/aqac126.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract
Introduction/Objective
Gastric-type cervical adenocarcinoma is an HPV-independent neoplasm accounting for 0.5-0.6% of cervical carcinomas, typically in women aged 50-55 years presenting with bleeding or watery vaginal discharge. The immunophenotypic and molecular overlap with mucinous pancreatic carcinomas presents a diagnostic dilemma in metastatic cases.
Methods/Case Report
We report the case of a 50 year-old female with a remote history of cervical dysplasia who presented with abdominal pain in December 2020 with CT notable for an incidental prominent, heterogeneous appearing cervix. Follow-up in February-August 2021 showed two unsatisfactory pap smears and an ultrasound of the cervix revealed Nabothian cysts. A friable cervix and vaginal discharge were noted on physical exam, however, no malignancy was identified on endometrial and endocervical biopsies. The patient re-presented in March 2022 with a persistent cough and was found to have a metastatic process of unknown origin involving bilateral ovaries/lungs, abdominal mesentery, pancreas, and pelvis. Lung, cervical, endometrial, and pancreatic sampling demonstrated well- differentiated mucinous adenocarcinoma with an immunophenotype positive for CK7 and MUC6 and negative for PAX-8, CDX-2, ER, Vimentin, TTF1/Napsin, GATA-3, CK20, and p16 with wildtype p53 staining compatible with endocervical, upper gastrointestinal, or pancreaticobiliary origin. Labs were notable for elevations in CA125 (198 U/mL) and CA19-9 (4,939 U/mL), further supporting pancreatic or gynecologic primaries. A retrospective review of all gynecologic cytology and histology specimens collected from the uterus and cervix in 2021 revealed similar bland mucinous epithelium, without overt atypia or features of malignancy. Next generation sequencing demonstrated a nonspecific and complex mutational burden including STK11 D23fs*25, SMAD4 N107fs*3, CDKN2A/B loss, KRAS G12V, and MTAP loss.
Results (if a Case Study enter NA)
NA
Conclusion
The treatment regimens for metastatic mucinous carcinoma from the cervix and pancreas differ significantly. Ultimately, the diagnosis of widely metastatic gastric type endocervical carcinoma was made possible through extensive clinical/radiographic and retrospective pathologic correlation with the incorporation of molecular studies.
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Affiliation(s)
- C Jaramillo
- Pathology, Brooke Army Medical Center , San Antonio, Texas , United States
| | - T Adams
- Pathology, Brooke Army Medical Center , San Antonio, Texas , United States
| | - S Shah
- Pathology, Brooke Army Medical Center , San Antonio, Texas , United States
| | - C Miller
- Pathology, Brooke Army Medical Center , San Antonio, Texas , United States
| | - N Teschan
- Pathology, Brooke Army Medical Center , San Antonio, Texas , United States
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Aguirre-Franco C, Torres-Duque CA, Salazar G, Casas A, Jaramillo C, Gonzalez-Garcia M. Prevalence of pulmonary hypertension in COPD patients living at high altitude. Pulmonology 2022:S2531-0437(22)00004-6. [PMID: 35151623 DOI: 10.1016/j.pulmoe.2021.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/03/2021] [Revised: 12/20/2021] [Accepted: 12/22/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Pulmonary hypertension (PH) is associated with poor prognosis for patients with chronic obstructive pulmonary disease (COPD). Most of the knowledge about PH in COPD has been generated at sea level, with limited information associated with high altitude (HA). OBJECTIVES To assess the prevalence and severity of PH in COPD patients living in a HA city (2,640 m). METHODS Cross-sectional study in COPD patients with forced expiratory volume in the first second / forced vital capacity ratio (FEV1/FVC) post-bronchodilator <0,7. Transthoracic echocardiography (TTE), spirometry, carbon monoxide diffusing capacity, and arterial blood gasses tests were performed. Patients were classified according to the severity of airflow limitation. PH was defined by TTE as an estimated systolic pulmonary artery pressure (sPAP) > 36 mmHg or indirect PH signs; severe PH as sPAP > 60 mmHg; and disproportionate PH as an sPAP > 60 mmHg with non-severe airflow limitation (FEV1 > 50% predicted). RESULTS We included 176 COPD patients. The overall estimated prevalence of PH was 56.3% and the likelihood of having PH increased according to airflow-limitation severity: mild (31.6%), moderate (54.9%), severe (59.6%) and very severe (77.8%) (p = 0.038). The PH was severe in 7.3% and disproportionate in 3.4% of patients. CONCLUSIONS The estimated prevalence of PH in patients with COPD at HA is high, particularly in patients with mild to moderate airflow limitation, and greater than that described for COPD patients at low altitude. These results suggest a higher risk of developing PH for COPD patients living at HA compared to COPD patients with similar airflow limitation living at low altitude.
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Affiliation(s)
- C Aguirre-Franco
- Fundación Neumológica Colombiana. Bogotá, Colombia; Universidad de La Sabana. Chía, Colombia.
| | - C A Torres-Duque
- Fundación Neumológica Colombiana. Bogotá, Colombia; Universidad de La Sabana. Chía, Colombia
| | - G Salazar
- Fundación Cardioinfantil - Instituto de Cardiología. Bogotá, Colombia
| | - A Casas
- Fundación Neumológica Colombiana. Bogotá, Colombia; Universidad de La Sabana. Chía, Colombia
| | - C Jaramillo
- Universidad de La Sabana. Chía, Colombia; Fundación Clínica Shaio. Bogotá, Colombia
| | - M Gonzalez-Garcia
- Fundación Neumológica Colombiana. Bogotá, Colombia; Universidad de La Sabana. Chía, Colombia
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4
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Botero D, Senior J, Velasquez J, Gandara J, Zapata A, Holguin E, Jaramillo C, Ferreira J, Munoz E. Validation of the CARPREG II risk stratification model and the WHOm scale in pregnant women with heart disease. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
The physiological changes of pregnancy imply a state of haemodynamic stress, which increases the risk of maternal-fetal complications in women with cardiac pathology. Risk stratification models allow clinical decisions to be guided and optimal diagnostic, follow-up and management strategies to be established according to each estimated category in order to reduce adverse outcomes.
Objective
To validate the CARPREG II and WHOm risk prediction models in a population of pregnant women with heart disease.
Materials and methods
Validation and comparison study of a risk prediction model in a prospective cohort of pregnant women with heart disease assessed between 2016 and 2019 by a cardiobstetric team in an average income country. The CARPREG II score was established and patients were classified according to the WHOm risk scale. We assessed cardiovascular and perinatal outcomes and determined the calibration and level of discrimination of these tools.
Results
In a cohort of 328 pregnant women (27±7 years), 33% (n=110) had congenital heart disease, followed by arrhythmias in 30% (n=98), valvular pathologies in 14% (n=46) and cardiomyopathies in 9% (n=29). In 56% of the pregnancies, the route of delivery was caesarean section, 84% of these by obstetric indication. A cardiac event occurred in 15%, with left heart failure (5.3%) and arrhythmias (2.3%) being the most frequent. The frequency of maternal death of cardiac origin during the study was 1.6%. Neonatal outcomes occurred in 37% of gestations (preterm delivery (16%) and low weight for gestational age (8.4%)) and obstetric events in 12.5%: pregnancy-induced hypertension (9%) and postpartum haemorrhage (2.3%).
NYHA functional class III-IV or cyanosis (OR 12 95% CI 3.1 - 46.4) and left ventricular dysfunction (LVEF <55%) (OR 3 95% CI 1 - 10.9) were the most statistically significant risk predictors. Discrimination of both models was adequate (AUC-ROC of 0.74 95% CI 0.64 - 0.84) for the CARPREG II risk index and 0.77 for the WHOm scale (95% CI 0.69 - 0.86) (Figure 2). Calibration is also good in the study population (Hosmer- Lemeshow goodness-of-fit 0.6 and 0.1, respectively). By including in the CARPREG II model the variables ejection fraction and pulmonary artery systolic pressure in their numerical and not dichotomised form, a discrete improvement in the predictive ability of the scale is evident (AUC-ROC 0.81 95% CI 0.71–0.91).
Conclusions
The CARPREG II and WHOm risk stratification models have good ability to discriminate the risk of adverse cardiac outcomes in pregnant women with heart disease and fit our population. To improve the predictive power of CARPREG II, the variables pulmonary hypertension and left ventricular dysfunction could be used numerically and not dichotomised as in the original model.
Funding Acknowledgement
Type of funding sources: Private hospital(s). Main funding source(s): San Vicente Foundation University Hospital, Cardio-obstetric Center
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Affiliation(s)
- D Botero
- University of Antioquia, Antioquia, Medellin, Colombia
| | - J Senior
- San Vicente Fundacion, Antioquia, Medellin, Colombia
| | - J Velasquez
- San Vicente Fundacion, Antioquia, Medellin, Colombia
| | - J Gandara
- San Vicente Fundacion, Antioquia, Medellin, Colombia
| | - A Zapata
- San Vicente Fundacion, Antioquia, Medellin, Colombia
| | - E Holguin
- San Vicente Fundacion, Antioquia, Medellin, Colombia
| | - C Jaramillo
- University of Antioquia, Antioquia, Medellin, Colombia
| | - J Ferreira
- San Vicente Fundacion, Antioquia, Medellin, Colombia
| | - E Munoz
- San Vicente Fundacion, Antioquia, Medellin, Colombia
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Povlow MR, Streiff M, Madireddi S, Jaramillo C. A Primary Parotid Mucosa-Associated Lymphoid Tissue Non-Hodgkin Lymphoma in a Patient With Sjogren Syndrome. Cureus 2021; 13:e15679. [PMID: 34277270 PMCID: PMC8281787 DOI: 10.7759/cureus.15679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2021] [Indexed: 11/05/2022] Open
Abstract
The salivary gland tumors are rare entities and the majority of these are benign. However, there are some entities such as prior neck radiation, certain infections, and systemic diseases which should raise the clinical suspicion for a malignant lesion. Patients with Sjogren syndrome are at increased risk for a salivary gland neoplasm, specifically non-Hodgkin lymphoma. While clinical findings play an important role in the initial workup, imaging plays a critical role in the diagnosis and management. This case describes a patient with Sjogren syndrome who presented with a left face mass where imaging was able to confidently diagnose her with a suspicious parotid neoplasm with lymphoma as the favored diagnosis. After histological evaluation, she was diagnosed with primary parotid mucosa-associated lymphoid tissue (MALT) non-Hodgkin lymphoma after which she went on to non-operative management.
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Affiliation(s)
- Michael R Povlow
- Department of Radiology, Brooke Army Medical Center, San Antonio, USA
| | - Mitchell Streiff
- Department of Radiology, Ponce Health Sciences University, Ponce, USA
| | | | - Couger Jaramillo
- Department of Pathology, Brooke Army Medical Center, San Antonio, USA
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Chen Y, André M, Adhikari K, Blin M, Bonfante B, Mendoza-Revilla J, Fuentes-Guajardo M, Palmal S, Chacón-Duque JC, Hurtado M, Villegas V, Granja V, Jaramillo C, Arias W, Lozano RB, Everardo-Martínez P, Gómez-Valdés J, Villamil-Ramírez H, de Cerqueira CCS, Hünemeier T, Ramallo V, Gonzalez-José R, Schüler-Faccini L, Bortolini MC, Acuña-Alonzo V, Canizales-Quinteros S, Gallo C, Poletti G, Bedoya G, Rothhammer F, Balding D, Tobin DJ, Wang S, Faux P, Ruiz-Linares A. A genome-wide association study identifies novel gene associations with facial skin wrinkling and mole count in Latin Americans. Br J Dermatol 2021; 185:988-998. [PMID: 33959940 DOI: 10.1111/bjd.20436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND Genome-wide association studies (GWASs) have identified genes influencing skin ageing and mole count in Europeans, but little is known about the relevance of these (or other genes) in non-Europeans. OBJECTIVES To conduct a GWAS for facial skin ageing and mole count in adults < 40 years old, of mixed European, Native American and African ancestry, recruited in Latin America. METHODS Skin ageing and mole count scores were obtained from facial photographs of over 6000 individuals. After quality control checks, three wrinkling traits and mole count were retained for genetic analyses. DNA samples were genotyped with Illumina's HumanOmniExpress chip. Association testing was performed on around 8 703 729 single-nucleotide polymorphisms (SNPs) across the autosomal genome. RESULTS Genome-wide significant association was observed at four genome regions: two were associated with wrinkling (in 1p13·3 and 21q21·2), one with mole count (in 1q32·3) and one with both wrinkling and mole count (in 5p13·2). Associated SNPs in 5p13·2 and in 1p13·3 are intronic within SLC45A2 and VAV3, respectively, while SNPs in 1q32·3 are near the SLC30A1 gene, and those in 21q21·2 occur in a gene desert. Analyses of SNPs in IRF4 and MC1R are consistent with a role of these genes in skin ageing. CONCLUSIONS We replicate the association of wrinkling with variants in SLC45A2, IRF4 and MC1R reported in Europeans. We identify VAV3 and SLC30A1 as two novel candidate genes impacting on wrinkling and mole count, respectively. We provide the first evidence that SLC45A2 influences mole count, in addition to variants in this gene affecting melanoma risk in Europeans.
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Affiliation(s)
- Y Chen
- Ministry of Education Key Laboratory of Contemporary Anthropology and Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Human Phenome Institute, Fudan University, Yangpu District, Shanghai, China
| | - M André
- UMR 7268 ADES, CNRS, Aix-Marseille Université, EFS, Faculté de Médecine Timone, Marseille, 13005, France.,Estonian Biocentre, Institute of Genomics, University of Tartu, Tartu, 51010, Estonia
| | - K Adhikari
- School of Mathematics and Statistics, Faculty of Science, Technology, Engineering and Mathematics, The Open University, Milton Keynes, MK7 6AA, UK.,Department of Genetics, Evolution and Environment, and UCL Genetics Institute, University College London, London, WC1E 6BT, UK
| | - M Blin
- UMR 7268 ADES, CNRS, Aix-Marseille Université, EFS, Faculté de Médecine Timone, Marseille, 13005, France
| | - B Bonfante
- UMR 7268 ADES, CNRS, Aix-Marseille Université, EFS, Faculté de Médecine Timone, Marseille, 13005, France
| | - J Mendoza-Revilla
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 31, Perú.,Unit of Human Evolutionary Genetics, Institut Pasteur, Paris, 75015, France
| | - M Fuentes-Guajardo
- Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Tarapacá, Arica, 1000000, Chile
| | - S Palmal
- UMR 7268 ADES, CNRS, Aix-Marseille Université, EFS, Faculté de Médecine Timone, Marseille, 13005, France
| | - J C Chacón-Duque
- Division of Vertebrates and Anthropology, Department of Earth Sciences, Natural History Museum, London, SW7 5BD, UK
| | - M Hurtado
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 31, Perú
| | - V Villegas
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 31, Perú
| | - V Granja
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 31, Perú
| | - C Jaramillo
- GENMOL (Genética Molecular), Universidad de Antioquia, Medellín, 5001000, Colombia
| | - W Arias
- GENMOL (Genética Molecular), Universidad de Antioquia, Medellín, 5001000, Colombia
| | - R B Lozano
- National Institute of Anthropology and History, Mexico City, MC, 6600, Mexico.,Department of Archaeogenetics, Max Planck Institute for the Science of Human History (MPI-SHH), Jena, 07745, Germany
| | - P Everardo-Martínez
- National Institute of Anthropology and History, Mexico City, MC, 6600, Mexico
| | - J Gómez-Valdés
- National Institute of Anthropology and History, Mexico City, MC, 6600, Mexico
| | - H Villamil-Ramírez
- Unidad de Genomica de Poblaciones Aplicada a la Salud, Facultad de Química, UNAM-Instituto Nacional de Medicina Genómica, Mexico City, MC, 4510, Mexico
| | | | - T Hünemeier
- Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, 05508-090, Brazil
| | - V Ramallo
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90040-060, Brazil.,Instituto Patagónico de Ciencias Sociales y Humanas, Centro Nacional Patagónico, CONICET, Puerto Madryn, U9129ACD, Argentina
| | - R Gonzalez-José
- Instituto Patagónico de Ciencias Sociales y Humanas, Centro Nacional Patagónico, CONICET, Puerto Madryn, U9129ACD, Argentina
| | - L Schüler-Faccini
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90040-060, Brazil
| | - M-C Bortolini
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90040-060, Brazil
| | - V Acuña-Alonzo
- National Institute of Anthropology and History, Mexico City, MC, 6600, Mexico
| | - S Canizales-Quinteros
- Unidad de Genomica de Poblaciones Aplicada a la Salud, Facultad de Química, UNAM-Instituto Nacional de Medicina Genómica, Mexico City, MC, 4510, Mexico
| | - C Gallo
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 31, Perú
| | - G Poletti
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 31, Perú
| | - G Bedoya
- GENMOL (Genética Molecular), Universidad de Antioquia, Medellín, 5001000, Colombia
| | - F Rothhammer
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica, 1000000, Chile
| | - D Balding
- Melbourne Integrative Genomics, Schools of BioSciences and Mathematics & Statistics, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - D J Tobin
- The Charles Institute of Dermatology, University College Dublin, Dublin, Ireland
| | - S Wang
- Chinese Academy of Sciences Key Laboratory of Computational Biology, Shanghai Institutes for Biological Sciences, University of the Chinese Academy of Sciences, Shanghai, 200031, China
| | - P Faux
- UMR 7268 ADES, CNRS, Aix-Marseille Université, EFS, Faculté de Médecine Timone, Marseille, 13005, France
| | - A Ruiz-Linares
- Ministry of Education Key Laboratory of Contemporary Anthropology and Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Human Phenome Institute, Fudan University, Yangpu District, Shanghai, China.,UMR 7268 ADES, CNRS, Aix-Marseille Université, EFS, Faculté de Médecine Timone, Marseille, 13005, France.,Department of Genetics, Evolution and Environment, and UCL Genetics Institute, University College London, London, WC1E 6BT, UK
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7
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Beers CJ, Jaramillo C, Reid NC, Schamis H, Allain JP, Caughman JBO, Meitner SJ, Rapp J, Zinkle SJ. Development of the materials analysis and particle probe for Proto-MPEX. Rev Sci Instrum 2021; 92:045108. [PMID: 34243379 DOI: 10.1063/5.0043111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/31/2021] [Indexed: 06/13/2023]
Abstract
The Prototype Material Plasma Exposure eXperiment (Proto-MPEX) is a linear plasma device being used in plasma source research and development (R&D) for the proposed MPEX. Once the R&D is completed, this device can also be used to perform plasma-material interaction studies. To perform these studies, a new materials analysis and particle probe (MAPP) has been constructed. The MAPP's components are a sample holder and manipulator and a custom vacuum chamber with ports to facilitate surface chemistry diagnostics. The MAPP's overall design enables rapid sample turnaround and in vacuo surface characterization. The surface analysis vacuum chamber has ports for x-ray photoelectron spectroscopy, thermal desorption spectroscopy, back-scatter ion scattering spectroscopy, forward-scatter ion scattering spectroscopy, and direct recoil spectroscopy. The sample manipulator and holder is a Lesker/UHV Multi-Centre Analytical Stage, which is used to place the samples in the exposure region of the Proto-MPEX or the analysis position in the MAPP vacuum chamber. The sample holder has a heating capability of up to 1200 °C for heated exposure and for desorption studies. In this work, we present the MAPP's design and the first tungsten sample exposure with ex situ analysis that shows a surface deposition layer on the exposed target, highlighting the need for additional in situ measurements on the Proto-MPEX.
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Affiliation(s)
- C J Beers
- Department of Energy Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - C Jaramillo
- Ken and Mary Lindquist Department of Nuclear Engineering, Penn State University, State College, Pennsylvania 16801, USA
| | - N C Reid
- Department of Nuclear, Plasma and Radiological Engineering, University of Illinois, Urbana, Illinois 61801, USA
| | - H Schamis
- Ken and Mary Lindquist Department of Nuclear Engineering, Penn State University, State College, Pennsylvania 16801, USA
| | - J P Allain
- Ken and Mary Lindquist Department of Nuclear Engineering, Penn State University, State College, Pennsylvania 16801, USA
| | - J B O Caughman
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S J Meitner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J Rapp
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S J Zinkle
- Department of Energy Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
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Martínez C, Jaramillo C, Correa-Metrío A, Crepet W, Moreno JE, Aliaga A, Moreno F, Ibañez-Mejia M, Bush MB. Neogene precipitation, vegetation, and elevation history of the Central Andean Plateau. Sci Adv 2020; 6:eaaz4724. [PMID: 32923618 PMCID: PMC7455194 DOI: 10.1126/sciadv.aaz4724] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 07/14/2020] [Indexed: 05/26/2023]
Abstract
Andean uplift played a fundamental role in shaping South American climate and species distribution, but the relationship between the rise of the Andes, plant composition, and local climatic evolution is poorly known. We investigated the fossil record (pollen, leaves, and wood) from the Neogene of the Central Andean Plateau and documented the earliest evidence of a puna-like ecosystem in the Pliocene and a montane ecosystem without modern analogs in the Miocene. In contrast to regional climate model simulations, our climate inferences based on fossil data suggest wetter than modern precipitation conditions during the Pliocene, when the area was near modern elevations, and even wetter conditions during the Miocene, when the cordillera was around ~1700 meters above sea level. Our empirical data highlight the importance of the plant fossil record in studying past, present, and future climates and underscore the dynamic nature of high elevation ecosystems.
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Affiliation(s)
- C. Martínez
- Plant Biology Section, School of Integrative Plant Sciences, Cornell University, 412 Mann Library Building, Ithaca, NY 14853, USA
- Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002, Balboa, Ancon 084303092, Panama
| | - C. Jaramillo
- Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002, Balboa, Ancon 084303092, Panama
- ISEM, U. Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - A. Correa-Metrío
- Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad de México 04520, México
| | - W. Crepet
- Plant Biology Section, School of Integrative Plant Sciences, Cornell University, 412 Mann Library Building, Ithaca, NY 14853, USA
| | - J. E. Moreno
- Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002, Balboa, Ancon 084303092, Panama
| | - A. Aliaga
- Departamento de Paleontología de Vertebrados, Museo de Historia Natural LimaUNMSM, Av. Arenales 1256, Jesús María, Lima, Perú
| | - F. Moreno
- Earth and Environmental Sciences, University of Rochester, 227 Hutchison Hall, University of Rochester, Rochester, NY 14627, USA
| | - M. Ibañez-Mejia
- Earth and Environmental Sciences, University of Rochester, 227 Hutchison Hall, University of Rochester, Rochester, NY 14627, USA
| | - M. B. Bush
- Ocean Engineering and Marine Sciences, Florida Institute of Technology, 225 Harris Building, Melbourne, FL, 32901, USA
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Luque J, Feldmann RM, Vernygora O, Schweitzer CE, Cameron CB, Kerr KA, Vega FJ, Duque A, Strange M, Palmer AR, Jaramillo C. Exceptional preservation of mid-Cretaceous marine arthropods and the evolution of novel forms via heterochrony. Sci Adv 2019; 5:eaav3875. [PMID: 31032408 PMCID: PMC6482010 DOI: 10.1126/sciadv.aav3875] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
Evolutionary origins of novel forms are often obscure because early and transitional fossils tend to be rare, poorly preserved, or lack proper phylogenetic contexts. We describe a new, exceptionally preserved enigmatic crab from the mid-Cretaceous of Colombia and the United States, whose completeness illuminates the early disparity of the group and the origins of novel forms. Its large and unprotected compound eyes, small fusiform body, and leg-like mouthparts suggest larval trait retention into adulthood via heterochronic development (pedomorphosis), while its large oar-like legs represent the earliest known adaptations in crabs for active swimming. Our phylogenetic analyses, including representatives of all major lineages of fossil and extant crabs, challenge conventional views of their evolution by revealing multiple convergent losses of a typical "crab-like" body plan since the Early Cretaceous. These parallel morphological transformations may be associated with repeated invasions of novel environments, including the pelagic/necto-benthic zone in this pedomorphic chimera crab.
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Affiliation(s)
- J. Luque
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
- Smithsonian Tropical Research Institute, Balboa-Ancón 0843-03092, Panamá, Panamá
- Department of Geology and Geophysics, Yale University, New Haven, CT 06520-8109, USA
| | - R. M. Feldmann
- Department of Geology, Kent State University, Kent, OH 44242, USA
| | - O. Vernygora
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
| | - C. E. Schweitzer
- Department of Geology, Kent State University at Stark, 6000 Frank Ave. NW, North Canton, OH 44720, USA
| | - C. B. Cameron
- Département de Sciences Biologiques Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - K. A. Kerr
- Smithsonian Tropical Research Institute, Balboa-Ancón 0843-03092, Panamá, Panamá
- Canadian Parks and Wilderness Society (CPAWS) Northern Alberta, P.O. Box 52031, Edmonton, AB T6G 2T5, Canada
| | - F. J. Vega
- Instituto de Geología, Universidad Autónoma de México, Ciudad Universitaria, México, CDMX 04510, México
| | - A. Duque
- Computer Animation and Visual Effects, College of Communication and Design, Lynn University, 2601 North Military Trail, Boca Raton, FL 33431, USA
| | - M. Strange
- Department of Geoscience, University of Nevada, Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154-4010, USA
| | - A. R. Palmer
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
| | - C. Jaramillo
- Smithsonian Tropical Research Institute, Balboa-Ancón 0843-03092, Panamá, Panamá
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10
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Jaramillo C, Gutierrez MA. Prevalence of upper respiratory diseases and associated factors in Colombian Creole horses. ARQ BRAS MED VET ZOO 2018. [DOI: 10.1590/1678-4162-9388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT To determine the prevalence of diseases of the upper respiratory tract and associated factors in the Colombian Creole Horse Valley Aburrá in 2015, a random sampling of 15 farms in southern Aburrá Valley under different management conditions was performed. A total of 105 CCC underwent general clinical examination, respiratory endoscopic evaluation and a detailed inspection of housing conditions and management. A low prevalence of upper respiratory tract diseases was observed, including Pharyngeal Lymphoid Hyperplasia 38.1%, Recurrent Laryngeal Neurophaty 12.38%, Dorsal Displacement of the Soft Palate 7.62%, and presence of tracheal secretions not associated with a specific pathology. A bivariate analysis showed association between tracheal secretions and frequency of training per week (OR = 9.86), duration of the training sessions (OR = 5.55) and inadequate ventilation of the stable (OR = 10.52). Association between HLR and inadequately ventilated barns was also observed (OR = 14.9). Logistic regression showed association between tracheal secretions and inadequate ventilation (OR = 7.18). We conclude that inadequate ventilation was the most important factor for the incidence of upper respiratory tract diseases in horses at the southern area of the Aburrá Valley.
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Castillo C, Jaramillo C, Loaiza M, Blanco R. Equine metabolic syndrome in Colombian creole horse: case report. ARQ BRAS MED VET ZOO 2017. [DOI: 10.1590/1678-4162-9119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT The equine metabolic syndrome is a condition that can be recognized because of obesity, insulin resistance and laminitis. Genetic factors could play a role in the occurrence of this syndrome. Certain breeds such as ponies (including the South American creole horses) have a lower sensibility to insulin and a higher prevalence of hyperinsulinemia. The environment and management conditions, such as overfeeding and lack of exercise are factors that bring a propensity for obesity. The adipose tissue works as an endocrine organ producing hormones (adipokines or adipocytokines) that affect the horse´s metabolism. The objective of this report is to describe the first case report of a Colombian creole mare with a metabolic syndrome, diagnosed by means of the combined test of glucose-insulin and clinical signs. Early diagnosis of this entity and an adequate treatment are useful for improving the life and the zootechnical conditions of the patient.
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Affiliation(s)
| | | | - M.J. Loaiza
- Corporación Universitaria Lasallista, Colombia
| | - R. Blanco
- Corporación Universitaria Lasallista, Colombia
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12
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Jaramillo C, Ramírez LM, Arias MP, Álvarez ID. Gases sanguíneos, electrolitos, variables metabólicas y determinantes del estado ácido-base en un grupo de Caballos Criollos Colombianos. Rev Med Vet Zoot 2016. [DOI: 10.15446/rfmvz.v63n1.56900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
<p>Se determinaron y compararon los valores de los gases sanguíneos, electrolitos, lactato, hematocrito y estado ácido base tanto para sangre venosa como para arterial en 17 equinos del Centro de Veterinaria y Zootecnia CES; para lo que se utilizó el sistema Epoc Blood Analysis, analizador portátil de sangre que permite obtener resultados de gases, iones y metabolitos. Los resultados arrojados por este estudio muestran que hay una diferencia estadística significativa (p< 0,05) para la glucosa arterial con respecto a la edad, para el lactato venoso con respecto al sexo y al comparar la sangre venosa contra la sangre arterial se obtuvo diferencia estadística significativa en la presión parcial de oxigeno (pO2), en la presión parcial de CO2 (PCO2), en la saturación de oxígeno, cTCO2, sodio, calcio ionizado, glucosa, bicarbonato, base exceso sanguíneo (b), base exceso extracelular (ecf), PCO2 (T) y PO2 corregida por temperatura, lo que lleva a concluir que se deben tomar muestras arteriales para realizar valoraciones precisas de los pacientes y que las variables como la presión parcial de oxígeno, la presión parcial de dióxido de carbono y la saturación de oxigeno dependen en gran medida de la temperatura ambiental, la temperatura del paciente y la altitud, condiciones que modifican las presiones parciales de los gases.</p>
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13
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Montúfar FE, Ochoa JE, Ortega H, Franco L, Montúfar MC, Monsalve A, Jaramillo C, Zapata M. "Melioidosis in Antioquia, Colombia: an emerging or endemic disease? A cases series". Int J Infect Dis 2015; 37:50-7. [PMID: 26051974 DOI: 10.1016/j.ijid.2015.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 05/27/2015] [Accepted: 05/30/2015] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Melioidosis is endemic in Malaysia, the southwest of Thailand, and northern Australia. The incidence in Thailand is 4.4/1000000 inhabitants, where it causes 19% of community-acquired pneumonia (CAP) and 20% of bacteremic pneumonia, and the mortality is 50%. Sporadic cases have been described in Central and South America. The objective of this study was to describe the clinical and epidemiological features and ecological characteristics of melioidosis in Antioquia, Colombia. METHODS This is a case series description. RESULTS Seven cases were identified. Burkholderia pseudomallei was isolated from peripheral blood, pleural fluid, and urine and was identified by the automated system VITEK 2 (bioMérieux) and API 20NE biochemical kit. Five of the cases had a bacteremic form with shock and pulmonary compromise and two of these patients died. The non-bacteremic melioidosis cases had genitourinary, abdominal, and osteoarticular compromise. All patients had comorbidities and lived in rural hot and humid areas in the west central region of Colombia (Antioquia). Diabetes mellitus, renal insufficiency, and other chronic diseases are important risk factors for the development of severe forms. CONCLUSIONS The cases presented here are similar to those occurring in endemic areas regarding comorbidity, risk factors, clinical presentation, and environmental conditions. It is necessary to establish whether melioidosis is an endemic and under-diagnosed disease or an emerging disease in Colombia.
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Affiliation(s)
- F E Montúfar
- Infectious Diseases Section, Pablo Tobón Uribe Hospital, Medellín, Colombia; Pulmonology Unit, León XIII Clinic of Antioquia University, Medellín, Colombia; Research Group in Respiratory and Infectious Diseases (GIERI), Medellín, Colombia.
| | - J E Ochoa
- Epidemiology Group, National School of Public Health, Antioquia University, Medellín, Colombia
| | - H Ortega
- Internal Medicine and Pulmonology, Antioquia University, Medellín, Colombia
| | - L Franco
- Cardiovascular Clinic, Medellín, Colombia
| | - M C Montúfar
- Faculty of Medicine, Pontificia Bolivariana University, Medellín, Colombia; Research Group in Respiratory and Infectious Diseases (GIERI), Medellín, Colombia
| | - A Monsalve
- Faculty of Medicine, Pontificia Bolivariana University, Medellín, Colombia; Research Group in Respiratory and Infectious Diseases (GIERI), Medellín, Colombia
| | - C Jaramillo
- Faculty of Medicine, Pontificia Bolivariana University, Medellín, Colombia; Research Group in Respiratory and Infectious Diseases (GIERI), Medellín, Colombia
| | - M Zapata
- Faculty of Medicine, Pontificia Bolivariana University, Medellín, Colombia; Research Group in Respiratory and Infectious Diseases (GIERI), Medellín, Colombia
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14
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Montes C, Cardona A, Jaramillo C, Pardo A, Silva JC, Valencia V, Ayala C, Pérez-Angel LC, Rodriguez-Parra LA, Ramirez V, Niño H. Middle Miocene closure of the Central American Seaway. Science 2015; 348:226-9. [PMID: 25859042 DOI: 10.1126/science.aaa2815] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Uranium-lead geochronology in detrital zircons and provenance analyses in eight boreholes and two surface stratigraphic sections in the northern Andes provide insight into the time of closure of the Central American Seaway. The timing of this closure has been correlated with Plio-Pleistocene global oceanographic, atmospheric, and biotic events. We found that a uniquely Panamanian Eocene detrital zircon fingerprint is pronounced in middle Miocene fluvial and shallow marine strata cropping out in the northern Andes but is absent in underlying lower Miocene and Oligocene strata. We contend that this fingerprint demonstrates a fluvial connection, and therefore the absence of an intervening seaway, between the Panama arc and South America in middle Miocene times; the Central American Seaway had vanished by that time.
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Affiliation(s)
- C Montes
- Universidad de los Andes, Bogotá, Colombia.
| | - A Cardona
- Universidad Nacional de Colombia, Medellín, Colombia
| | - C Jaramillo
- Smithsonian Tropical Research Institute, Ciudad de Panamá, Panamá
| | - A Pardo
- Universidad de Caldas, Manizales, Colombia
| | - J C Silva
- University of Houston, Houston, TX 77004, USA
| | - V Valencia
- Washington State University, Pullman, WA 99164, USA
| | - C Ayala
- Corporación Geológica Ares, Bogotá, Colombia
| | | | | | | | - H Niño
- Ecopetrol, Bogotá, Colombia
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15
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Cardinal-Fernández P, Ferruelo A, Rego N, Rojas Y, Ballén-Barragán A, Granados R, Jaramillo C, Lopez-Hernández E, Martínez-Caro L, Nin N, Herrero R, de la Cal MA, Esteban A, Lorente JA. 0895. Identification and validation of a mirna as a diagnostic biomarker of diffuse alveolar damage in an animal model of acute lung injury and adult respiratory distress syndrome in mechanically ventilated patients. Intensive Care Med Exp 2014. [PMCID: PMC4798317 DOI: 10.1186/2197-425x-2-s1-o21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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16
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Daly JW, Martin Garraffo H, Spande TF, Jaramillo C, Stanley Rand A. Dietary source for skin alkaloids of poison frogs (Dendrobatidae)? J Chem Ecol 2013; 20:943-55. [PMID: 24242207 DOI: 10.1007/bf02059589] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/1993] [Accepted: 12/16/1993] [Indexed: 10/25/2022]
Abstract
A wide range of alkaloids, many of which are unknown elsewhere in nature, occur in skin of frogs. Major classes of such alkaloids in dendrobatid frogs are the batrachotoxins, pumiliotoxins, histrionicotoxins, gephyrotoxins, and decahydroquinolines. Such alkaloids are absent in skin of frogs (Dendrobates auratus) raised in Panama on wingless fruit flies in indoor terraria. Raised on leaf-litter arthropods that were collected in a mainland site, such terraria-raised frogs contain tricyclic alkaloids including the beetle alkaloid precoccinelline, 1,4-disubstituted quinolizidines, pyrrolizidine oximes, the millipede alkaloid nitropolyzonamine, a decahydroquinoline, a gephyrotoxin, and histrionicotoxins. The profiles of these alkaloids in the captive-raised frogs are closer to the mainland population ofDendrobates auratus at the leaf-litter site than to the parent population ofDendrobates auratus from a nearby island site. Extracts of a seven-month sampling of leaf-litter insects contained precoccinelline, pyrrolizidine oxime236 (major), and nitropolyzonamine (238). The results indicate a dietary origin for at least some "dendrobatid alkaloids," in particular the pyrrolizidine oximes, the tricyclic coccinellines, and perhaps the histrionicotoxins and gephyrotoxins.
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Affiliation(s)
- J W Daly
- Laboratory of Bioorganic Chemistry, National Institutes of Health, 20892, Bethesda, Maryland
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17
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Hoorn C, Wesselingh FP, Steege HT, Bermudez MA, Mora A, Sevink J, Sanmartin I, Sanchez-Meseguer A, Anderson CL, Figueiredo JP, Jaramillo C, Riff D, Negri FR, Hooghiemstra H, Lundberg J, Stadler T, Sarkinen T, Antonelli A. Origins of Biodiversity--Response. Science 2011. [DOI: 10.1126/science.331.6016.399] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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18
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Hoorn C, Wesselingh FP, ter Steege H, Bermudez MA, Mora A, Sevink J, Sanmartín I, Sanchez-Meseguer A, Anderson CL, Figueiredo JP, Jaramillo C, Riff D, Negri FR, Hooghiemstra H, Lundberg J, Stadler T, Särkinen T, Antonelli A. Amazonia through time: Andean uplift, climate change, landscape evolution, and biodiversity. Science 2010; 330:927-31. [PMID: 21071659 DOI: 10.1126/science.1194585] [Citation(s) in RCA: 821] [Impact Index Per Article: 58.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The Amazonian rainforest is arguably the most species-rich terrestrial ecosystem in the world, yet the timing of the origin and evolutionary causes of this diversity are a matter of debate. We review the geologic and phylogenetic evidence from Amazonia and compare it with uplift records from the Andes. This uplift and its effect on regional climate fundamentally changed the Amazonian landscape by reconfiguring drainage patterns and creating a vast influx of sediments into the basin. On this "Andean" substrate, a region-wide edaphic mosaic developed that became extremely rich in species, particularly in Western Amazonia. We show that Andean uplift was crucial for the evolution of Amazonian landscapes and ecosystems, and that current biodiversity patterns are rooted deep in the pre-Quaternary.
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Affiliation(s)
- C Hoorn
- Paleoecology and Landscape Ecology, Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands.
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Jeanmougin M, Beaulieu P, Doutre MS, Jaramillo C. Aide au bon usage de l’isotrétinoïne en pratique libérale : observatoire prospectif de 1263 patients acnéiques. Ann Dermatol Venereol 2009; 136:54-6. [DOI: 10.1016/j.annder.2008.11.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2008] [Accepted: 11/21/2008] [Indexed: 11/29/2022]
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20
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López AM, Delgado MP, Jaramillo C, Amézquita A, Parra G, Echeverry MM. [Characterization of the Helicobacter pylori vacuolating cytotoxin gene in gastric biopsy specimens from patients living in Tolima, Colombia]. Rev Argent Microbiol 2009; 41:4-10. [PMID: 19391518] [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: 05/27/2023] Open
Abstract
Helicobacter pylori successfully colonizes the gastric niche. These bacteria produce a vacuolating cytotoxin known as VacA, which is codified by the vacA gene. This protein represents an important virulence factor. H. pylori strains have different vacA alleles, which show a variety of phenotypes that have been associated with gastrointestinal diseases. The aim of this study was to generate data about the prevalence of H. pylori and the vacA genotype in Tolima (Colombia) residents, and to evaluate if there exists a relationship between these data and the development of different gastrointestinal pathologies. Seventy three patients with different pathologies were included. The DNA extracted from biopsy specimens was analyzed and the presence of bacteria was determined by amplifying a fragment of the 16 rDNA gene. The vacA genotype was also determined by PCR. Fifty-two percent out of the 50 genotyped samples showed vacA s1m1 allele, 42% vacA s2m2, 4% s1m2, and 2% s1,s2,m1,m2. A higher sensitivity for the detection of H. pylori was evidenced by amplifying the vacA gene rather than the 16S rDNA gene. No association was found between the vacA genotype and the gastrointestinal diseases included in the study.
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Affiliation(s)
- A M López
- Universidad de los Andes, Carrera 1 N 18-10 (Of 210) Bogotá, Colombia
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21
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Jaramillo C, Montaña MF, Castro LR, Vallejo GA, Guhl F. Differentiation and genetic analysis of Rhodnius prolixus and Rhodnius colombiensis by rDNA and RAPD amplification. Mem Inst Oswaldo Cruz 2001; 96:1043-8. [PMID: 11784920 DOI: 10.1590/s0074-02762001000800003] [Citation(s) in RCA: 24] [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: 11/21/2022] Open
Abstract
Domiciliated Rhodnius prolixus and sylvatic R. colombiensis were analyzed in order to confirm their genetic divergence and verify the risk that the latter represents in the domiciliation process, and to provide tools for identifying the sources of possible reinfestation by triatomines in human dwellings allowing control programs to be undertaken. Comparison of random amplified polymorphic DNA amplification patterns and cluster analysis suggests reproductive discontinuity between the two species. The calculated statistical F value of 0.24 and effective migration rate of 0.6 individuals per generation are insufficient to maintain genetic homogeneity between them and confirm the absence of present genetic flow. R. colombiensis presents higher intrapopulation variability. Polymerase chain reaction of ribosomal DNA supports these findings. The low genetic flow between the two species implies that R. colombiensis do not represent an epidemiological risk for the domiciliary transmission of Trypanosoma cruzi in the Tolima Department. The lower variability of the domiciliated R. prolixus could result in greater susceptibility to the use of pesticides in control programs.
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Affiliation(s)
- C Jaramillo
- Centro de Investigaciones en Parasitología Tropical, Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Colombia
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Abstract
This study was conducted in order to compare the clinical freeway space measurements using three simple methods commonly used by dentists in their practices. The study was performed in 15 young healthy subjects with natural dentition and bilateral molar support. Artificial landmarks (adhesive tape) were placed on the more prominent parts of the nose and chin of each subject. Vertical dimension of occlusion (VDO) was measured in the intercuspal position. Postural vertical dimension (PVD) was measured in the following functional conditions: after swallowing saliva, after pronouncing the word "Mississippi", and in a relaxed postural mandibular position (RPMP). Then, the clinical freeway space value in each functional condition was obtained by subtracting VDO from PVD value. Significant differences among clinical freeway space values using three different methods were observed (ANOVA). A significantly higher clinical freeway space value was found using phonetics method than after swallowing and with the mandible in a relaxed postural position (Bonferroni multiple comparison test). No significant differences between swallowing and relaxed methods were found. These results seem to suggest that the measures of clinical freeway space depend upon the method used.
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Affiliation(s)
- R Miralles
- Oral Physiology Laboratory, Biomedical Sciences Institute, Faculty of Medicine, University of Chile, Santiago.
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23
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Corpe RS, Steflik DE, Whitehead RY, Wilson MD, Young TR, Jaramillo C. Correlative experimental animal and human clinical retrieval evaluations of hydroxyapatite (HA)-coated and non-coated implants in orthopaedics and dentistry. Crit Rev Biomed Eng 2001; 28:395-8. [PMID: 11108205 DOI: 10.1615/critrevbiomedeng.v28.i34.80] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Retrieval analyses disclosed in vivo dissociation of HA in orthopaedic acetabular components, but excellent bone ingrowth into intact HA coatings on dental retrievals. Initial healing and the bone interface between HA-coated and non-coated implants in the posterior maxilla (Mx) and mandible (Md) was assessed in an animal model using light microscopy (LM), including confocal (CM) and Nomarski (NM) microscopy. Seventy-two implants (36 HA-coated; 36 non-coated) were placed into jaws of six dogs; half after extraction, half after 3 months healing. Animals were euthanized 3 months postimplantation. All implants osseointegrated; however, preliminary morphometry showed higher BCL for HA-coated (51%) than non-coated implants (44%) in the Mx (p < 0.05). BCL for HA-coated Md implants was not significantly higher (64%) than non-coated implants (62%). Bone closely apposed both implant types; however, LM suggested a more intimate association with HA coatings. Serial sections disclosed a reddish coating on the HA, possibly analogous to oral tissue proteoglycans, which was not visible with non-coated implants. This material was continuous with similar material coating endosteum, osteoid regions, and osteocyte (Os) lacunae close to the implant. An interdigitating canaliculi network allowed communication between interfacial Os and Os deeper within the bone. Data suggest HA offers enhanced initial bone fixation in the Mx, and that adequate bone exists for non-coated implant stability in the Md. No HA dissociation was seen with implants in the animal study, which was consistent with retrieved human HA dental implants.
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Affiliation(s)
- R S Corpe
- Department of Surgery, Medical College of Georgia, Augusta 30912-4030, USA
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24
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Abstract
Four main causes of bruxism have been studied - high anxiety level, malocclusion, temporomandibular disorders (TMD) and oral habits. Effective dental treatment for this problem is unknown in children with primary teeth, although, high prevalence has been reported. The aim of this study was to investigate the effectiveness of psychological techniques in children with bruxism. A total of 33 children, 3-6 years of age with normal occlusal features, without oral habits, rate in the Conners' parent rating scales (CPRS) and more than 0.75% in Conners' teacher rating scales (CTRS), and one or more temporomandibular joint (TMJ) disorders registered in the Bernal and Tsamtsouris examination, were selected from 188 children. Two psychological techniques, 'directed muscular relaxation' and 'competence reaction', were applied for 6 months. The results were analysed with a Wilcoxon rank sum test. All patients reduced their anxiety level and TMJ disorders, with statistical significance (P < 0.05). The psychological techniques were effective in the reduction of signs of bruxism in children with primary teeth.
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Affiliation(s)
- C C Restrepo
- Health Sciences Institute, CES, Medellín, Colombia
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25
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Madden M, Salo WL, Streitz J, Aufderheide AC, Fornaciari G, Jaramillo C, Vallejo GA, Yockteng R, Arriaza B, Cárdenas-Arroyo F, Guhl F. Hybridization screening of very short PCR products for paleoepidemiological studies of Chagas' disease. Biotechniques 2001; 30:102-4, 106, 108-9. [PMID: 11196299 DOI: 10.2144/01301st07] [Citation(s) in RCA: 22] [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: 11/23/2022] Open
Abstract
Single strands of very short PCR products can be covalently immobilized to a slide and then easily detected by probe hybridization. In this work, the PCR product was a 70-nucleotide segment of ancient DNA, representing a portion of repeat mini-circle DNA from the kinetoplast of Trypanosoma cruzi, the infectious agent of Chagas' disease (American Trypanosomiasis). The target segment was initially established to be present in soft tissue samples taken from four "naturally" mummified Andean bodies using PCR followed by cloning and sequencing. Hybridization screening of the covalently immobilized PCR products positively identified products from 25 of 27 specimens of different tissues from these four mummies. The method appears to be ideal for the purpose of screening a large number of specimens when the target PCR product is very short.
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Affiliation(s)
- M Madden
- Whiteside Institute for Clinical Research, Duluth, MN, USA.
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Abstract
Human Chagas disease is a purely accidental occurrence. As humans came into contact with the natural foci of infection might then have become infected as a single addition to the already extensive host range of Trypanosoma cruzi that includes other primates. Thus began a process of adaptation and domiciliation to human habitations through which the vectors had direct access to abundant food as well as protection from climatic changes and predators. Our work deals with the extraction and specific amplification by polymerase chain reaction of T. cruzi DNA obtained from mummified human tissues and the positive diagnosis of Chagas disease in a series of 4, 000-year-old Pre-Hispanic human mummies from the northern coast of Chile. The area has been inhabited at least for 7,000 years, first by hunters, fishers and gatherers, and then gradually by more permanent settlements. The studied specimens belonged to the Chinchorro culture, a people inhabiting the area now occupied by the modern city of Arica. These were essentially fishers with a complex religious ideology, which accounts for the preservation of their dead in the way of mummified bodies, further enhanced by the extremely dry conditions of the desert. Chinchorro mummies are, perhaps, the oldest preserved bodies known to date.
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Affiliation(s)
- F Guhl
- Centro de Investigaciones en Microbiología y Parasitología Tropical, Universidad de los Andes, Bogotá, Colombia.
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Guhl F, Jaramillo C, Vallejo GA, Yockteng R, Cárdenas-Arroyo F, Fornaciari G, Arriaza B, Aufderheide AC. Isolation of Trypanosoma cruzi DNA in 4,000-year-old mummified human tissue from northern Chile. Am J Phys Anthropol 1999; 108:401-7. [PMID: 10229385 DOI: 10.1002/(sici)1096-8644(199904)108:4<401::aid-ajpa2>3.0.co;2-p] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A segment of DNA unique to the kinetoplast of Trypanosoma cruzi was isolated from spontaneously mummified human remains from the coastal area of northern Chile at sites dated from 2000 BC to about AD 1400. Following rehydration of the desiccated human tissue samples of heart, esophagus, or colon, the samples were extracted and primers employed to bind to a 330 bp kinetoplast minicircle DNA sequence present in T. cruzi. This segment was then amplified using the polymerase chain reaction (PCR), and the target segment was visualized by gel electrophoresis. This method enables the identification of Chagas' disease in an ancient body in the absence of recognizable anatomic pathological changes.
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Affiliation(s)
- F Guhl
- Centro de Investigaciones en Microbiología y Parasitología Tropical, Universidad de los Andes, Bogotá, Colombia
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Montoya-Lerma J, Palacios R, Osorio L, Jaramillo C, Cadena H. Further evidence of humans as source of Leishmania viannia for sandflies. Mem Inst Oswaldo Cruz 1998; 93:735-6. [PMID: 9921293 DOI: 10.1590/s0074-02761998000600006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- J Montoya-Lerma
- Centro Internacional de Investigaciones Médicas-CIDEIM, Cali, Colombia.
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29
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Haase KK, Athanasiadis A, Mahrholdt H, Treusch A, Wullen B, Jaramillo C, Baumbach A, Voelker W, Meisner C, Karsch KR. Acute and one year follow-up results after vessel size adapted PTCA using intracoronary ultrasound. Eur Heart J 1998; 19:263-72. [PMID: 9519320 DOI: 10.1053/euhj.1997.0614] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIMS Recent randomized clinical trials have reported a reduction in restenosis with intracoronary stents and have suggested that this restenosis reduction is a result of the higher immediate luminal gain, in comparison to conventional percutaneous transluminal coronary angioplasty (PTCA). The hypothesis of this study is based on the assumption that PTCA results may be optimized by determining vessel dimensions before intervention, using intravascular ultrasound. This may lead to long-term PTCA results equivalent to PTCA and the additional placement of a stent. The purpose of this prospective non-randomized single-centre study was to evaluate (1) the safety and efficacy and (2) the long-term outcome of vessel-size adapted PTCA in patients with native coronary artery obstructions. METHODS AND RESULTS From January 1995 to December 1995 the morphological dimensions of target lesions were determined in 144 patients with 152 lesions by intravascular ultrasound prior to conventional balloon angioplasty. Quantitative assessment of the vascular dimensions were assessed on-line and the diameter of the balloon catheter was adapted to the external elastic membrane diameter at the lesion site. Using this strategy, mean balloon diameter was 4.0 +/- 0.5 mm and mean pressure for complete balloon expansion was 7 +/- 2 atmospheres. Acute and one year follow-up results were obtained in all 144 patients. Acute events occurred in two patients (one death and one acute surgical revascularization). During one year follow-up, 16 patients (12%) had a clinical event including one cardiac death, two transmural myocardial infarctions, 10 repeat PTCAs within the target lesion and three elective coronary artery bypass grafts (CABG). In 75% (n:112) control angiography was performed and revealed an angiographic restenosis rate of 21% using the NHLBI criteria of a diameter stenosis > 50%. CONCLUSION Intravascular ultrasound provides an accurate and precise description of vascular dimensions at the site of the stenotic lesion. The use of balloon diameters following these measurements appears to be (1) safe in the acute setting with a low number of in hospital events and (2) gives a low restenosis rate and number of clinical events at one year follow-up. These promising results warrant verification in larger-scale randomized trials.
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Affiliation(s)
- K K Haase
- Medical Clinic III, University of Tuebingen, Germany
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30
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Arango M, Jaramillo C, Cortés A, Restrepo A. Auricular chromoblastomycosis caused by Rhinocladiella aquaspersa. Med Mycol 1998; 36:43-5. [PMID: 9776811] [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: 02/09/2023] Open
Abstract
An unusual case of chromoblastomycosis localized in the ear and caused by R. aquaspersa is presented. The patient was a 60-year-old male urban resident, who had had the disease for 5 years. The lesion was darkly pigmented, infiltrative and crusty. Sclerotic cells were seen on direct examinations and the fungus was recovered in culture and identified on the basis of the characteristic sporulation. Itraconazole therapy at a dose of 200 mg day-1 for 7 months produced complete healing.
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Affiliation(s)
- M Arango
- Corporación para Investigaciones Biológicas (CIB), Medellåffin, Colombia.
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Abstract
Histological analysis of the vocal sac and body wall in the leptodactylid frog Physalaemus pustulosus suggests that both muscle and elastic fibers are important in call production. Abdominal musculature as well as abdominal bands of elastin (the lineae masculinae) provide the energy required for exhalation and sound production. Air flowing through the larynx inflates a highly extensible vocal sac lined with muscle and a network of elastic fibers. Inherent elasticity together with muscular activity of the vocal sac likely increase the speed and possibly decrease the energetic costs of lung reinflation following vocalization. The mechanics of call production in P. pustulosus thus involve not only laryngeal activation but also elastic transfer of air between the supralaryngeal vocal sac and abdominal respiratory structures.
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Affiliation(s)
- C Jaramillo
- Smithsonian tropical Research Institute, Balboa, Republic of Panama
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Travi BL, Montoya J, Gallego J, Jaramillo C, Llano R, Velez ID. Bionomics of Lutzomyia evansi (Diptera: Psychodidae) vector of visceral leishmaniasis in northern Columbia. J Med Entomol 1996; 33:278-285. [PMID: 8667372 DOI: 10.1093/jmedent/33.3.278] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The feeding behavior, seasonality, and natural infection rate of Lutzomyia evansi (Nuñez-Tovar) with Leishmania chagasi (Cuna & Chagas) was studied during a 12-mo period at 2 hamlets, El Contento and Vidales. Sand fly abundance in extra-, peri-, and intradomestic habitats was evaluated with sticky traps and CDC light traps, whereas human bait and Shannon trap collections were made only in peridomestic habitats. All trapping methods showed a clear predominance of L. evansi throughout the year. Sand flies were present during most of the year, with the exception of the driest months (February and March). Although the total number of sand flies was higher in El Contento than in Vidales, a larger proportion of L. evansi was found in intradomestic habitat than in the peri- and extradomestic habitats at Vidales. Also, sand flies from Vidales had a higher infection rate with L. chagasi than did those from El Contento. Although 2 of 9 promastigote infections detected in L. evansi were identified as L. chagasi, the difficulty of isolating and propagating leishmania strains from this visceral leishmaniasis focus precluded characterization of most parasite samples. Parous and infected sand flies were most abundant toward the end of the rainy season (October-December). For this reason, control strategies based on reducing sand fly populations or avoiding human-vector contact should be concentrated during the October-December period.
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Affiliation(s)
- B L Travi
- Centro Internacional de Entrenamiento e Investigaciones Médicas-CIDEIM, Cali, Colombia
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35
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Alexander B, Usma MC, Cadena H, Quesada BL, Solarte Y, Roa W, Montoya J, Jaramillo C, Travi BL. Phlebotomine sandflies associated with a focus of cutaneous leishmaniasis in Valle del Cauca, Colombia. Med Vet Entomol 1995; 9:273-278. [PMID: 7548944 DOI: 10.1111/j.1365-2915.1995.tb00133.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A survey was made of the phlebotomine sandfly fauna of La Guaira, a village with coffee plantations near Cali, Colombia, from which cases of American cutaneous leishmaniasis had been reported due to Leishmania (Viannia) panamensis and Le. (V.) braziliensis. Among six species of sandfly collected on human bait, Lutzomyia youngi was most important in terms of biting nuisance. Lu.columbiana, Lu.lichyi and Lu.scorzai as well as Lu.youngi adults occurred throughout the year. Sandfly man-biting activity occurred throughout the night and was highest within 2 h of sunset. Despite its abundance in nocturnal samples, Lu.youngi was rarely taken in diurnal resting site collections. In contrast, Lu.lichyi was collected on tree-trunks during the day in large numbers and was the only species biting in daylight. The implications of these and other findings for leishmaniasis control measures in La Guaira are considered.
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Affiliation(s)
- B Alexander
- Grupo de Entomología, Fundación Centro International de Entrenamiento e Investigaciones Médicas, Cali, Colombia
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36
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Alexander B, Jaramillo C, Usma MC, Quesada BL, Cadena H, Roa W, Travi BL. An attempt to control Phlebotomine sand flies (Diptera: Psychodidae) by residual spraying with deltamethrin in a Colombian village. Mem Inst Oswaldo Cruz 1995; 90:421-4. [PMID: 8544745 DOI: 10.1590/s0074-02761995000300020] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [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] [Indexed: 01/31/2023] Open
Abstract
An attempt was made to control phlebotomine sand flies biting indoors in a rural community near Cali, Colombia, using the residual insecticide "K-Othrine" (deltamethrin) sprayed on the inside walls of houses. Twelve houses were divided into matched pairs based on physical characteristics, one house in each pair being left untreated while the inside walls of the other were sprayed with 1% deltamethrin at a concentration of 500 mg a.i./m2. Sand flies were sampled each week using protected human bait and sticky trap collections for four months after spraying. The number of sand flies (Lutzomyia youngi) collected on sticky traps was significantly lower (P = 0.004) in the untreated houses than in the treated ones with which they were matched. This difference was not significant for L. columbiana; the other anthropophilic species were not present in large numbers. The numbers collected on human bait in treated and untreated houses were not significantly different for either species. Activity of the insecticide as determined by contact bioassays remained high throughout the study and failure to control the insects was attributed to two factors: the tendency of sand flies to bite before making contact with the insecticide and the fact that the number of sand flies that entered houses represented a relatively small proportion of the population in the wooded areas surrounding the settlement in the study.
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Affiliation(s)
- B Alexander
- Centro Internacional de Entrenamiento e Investigaciones Médicas (CIDEIM), Cali, Colombia
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37
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Travi BL, Jaramillo C, Montoya J, Segura I, Zea A, Goncalves A, Velez ID. Didelphis marsupialis, an important reservoir of Trypanosoma (Schizotrypanum) cruzi and Leishmania (Leishmania) chagasi in Colombia. Am J Trop Med Hyg 1994; 50:557-65. [PMID: 8203703 DOI: 10.4269/ajtmh.1994.50.557] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.3] [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] [Indexed: 01/29/2023] Open
Abstract
The role of Didelphis marsupialis as a reservoir of zoonotic hemoflagellates was examined in two ecologically distinct settings in Colombia. While 72% (12 of 18) of the opossums collected in the tropical rain forest harbored Trypanosoma cruzi, other mammals in the area had lower infection rates: 1.3% (Proechymis semispinosus [spiny rat]; 13% Tylomys mirae [climbing rat]; and 6% Rattus rattus). Trypanosoma cruzi isolates from D. marsupialis were similar to zymodeme 1 (Z1), and two of four phenotypes were shared with Tylomys mirae, which is also predominantly arboreal. Terrestrial (P. semispinosus) and peridomestic (R. rattus) animals were infected with Z3 or other Z1 phenotypes, respectively. Schizodeme analysis showed polymorphisms among isolates from mammals, reflecting diverse modes of transmission, and a complex epidemiologic situation. Despite the lower infection rate of the opossum (14%) found in our study in the tropical dry forest as compared with the tropical wet forest, Chagas' disease has been reported only in the former area. This suggests that the lack of alternative blood sources for triatomines of the tropical dry forest, where mammals are less abundant than in the wet forest, may increase the risk of human infection. Among several species of mammals captured in the tropical dry forest, Leishmania chagasi was isolated from 22.7% (5 of 22) D. marsupialis. This finding confirms the important role of opossums in Colombian foci of visceral leishmaniasis, including those where the phlebotomine species involved in transmission is Lutzomyia evansi, an alternative vector to the more common Lutzomyia longipalpis.
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Affiliation(s)
- B L Travi
- Fundacion Centro Internacional de Entrenamiento e Investigaciones Medicas, Cali, Colombia
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38
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Abstract
To evaluate the vector competence of some Lutzomyia spp. (Diptera: Psychodidae) for Leishmania (Viannia) spp. (Kinetoplastida: Trypanosomatidae), experimental infections of anthropophilic sandflies from the Colombian Pacific coast were performed, through membrane feeding and xenodiagnosis on hamsters infected with Le. (V.)braziliensis or Le. (V.)panamensis. Wild-caught or F1 generation females of Lutzomyia gomezi, Lu. hartmanni, Lu.panamensis and Lu.trapidoi were allowed to feed on hamster lesions and then maintained at 26 degrees C and > 80% r.h. on a sugar-water diet until dissection on the fifth day post-infection (p.i.). Despite similar infection rates (range 37-44%) in both Lu.gomezi and Lu.trapidoi, infections were heavier (> 100 parasites) in the latter species. Infections of Lu.trapidoi with Le.braziliensis (n = 21) and Le.panamensis (n = 27) showed parasite migration toward the foregut, with promastigote colonization of the stomodeal valve and appearance of infective forms. In contrast, infections of Lu.gomezi with Le.braziliensis (n = 10) and Le.panamensis (n = 5) were light (< 50 parasites) and usually restricted to the pylorus. In Lu.hartmanni, only a few promastigotes were found in the pylorus and midgut of 3/8 specimens infected with Le.braziliensis, and no Le.panamensis developed (n = 19). By day 5 p.i., promastigote colonization of the hind- and midgut by Le.panamensis was observed in 2/4 Lu.panamensis but not Le.braziliensis (n = 3). It was concluded that Lu.trapidoi is a more efficient vector than Lu.gomezi for both Le.braziliensis and Le.panamensis, and that Lu.hartmanni and Lu.panamensis are of minor importance for Leishmania transmission in this endemic area.
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Affiliation(s)
- C Jaramillo
- Fundación Centro Internacional de Entrenamiento e Investigaciones Médicas-CIDEIM, Cali, Colombia
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Gonzalez-Ruiz A, Haque R, Rehman T, Aguirre A, Jaramillo C, Castañon G, Hall A, Guhl F, Ruiz-Palacios G, Warhurst DC. A monoclonal antibody for distinction of invasive and noninvasive clinical isolates of Entamoeba histolytica. J Clin Microbiol 1992; 30:2807-13. [PMID: 1452651 PMCID: PMC270533 DOI: 10.1128/jcm.30.11.2807-2813.1992] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Approximately 10% of the world population is infected with Entamoeba histolytica, but only 10% of the carriers develop symptomatic amebiasis. This discrepancy could be explained by the genotypic differences between the morphologically indistinguishable invasive and noninvasive strains of E. histolytica currently identified by zymodeme analysis, a technique that is unsuitable for routine diagnostic laboratories. Here we report the production of a monoclonal antibody against E. histolytica and its use in an immunofluorescence assay to identify invasive isolates cultured from stool samples of infected patients in several regions where amebiasis is endemic: Bangladesh, Colombia, and Mexico. After testing a total of 88 E. histolytica isolates, the correlation between zymodeme characterization and the immunofluorescence assay with the invasive isolate-specific monoclonal antibody was 100%. The epitope detected by the invasive isolate-specific monoclonal antibody resides in a previously undescribed internal protein with molecular masses of 84 and 81 kDa in axenic and polyxenic E. histolytica strains, respectively.
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Affiliation(s)
- A Gonzalez-Ruiz
- Department of Medical Parasitology, London School of Hygiene and Tropical Medicine, United Kingdom
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Schneider CM, Visser M, Nickel G, Ferrington DA, Jaramillo C. OCCUPATIONAL PHYSICAL FITNESS AND WELLNESS LIFESTYLE PROFILES OF SAFETY EMPLOYEES. Med Sci Sports Exerc 1992. [DOI: 10.1249/00005768-199205001-00790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Travi BL, Orihel TC, Montoya J, Jaramillo C. Development of Mansonella perstans in the surrogate vector Aedes aegypti. Trop Med Parasitol 1990; 41:411-4. [PMID: 2075386] [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] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The biology of the human filaria Mansonella perstans has been poorly studied due in part to the lack of experimental animal models in which its life-cycle could be reproduced. In nature Culicodes spp. (and probably simuliids) are the vectors involved in disease transmission. In the present work Aedes aegypti black-eyed strain was experimentally infected with M. perstans microfilariae by intrathoracic inoculation of 8 to 15 parasites contained in 0.4-0.6 microliters of RPMI 1640. Concentration of microfilariae was achieved by means of a ficoll separation technique. A. aegypti were maintained at 26 degrees C and 80% relative humidity with a sugar-water diet, except on day 4 post-infection on which they received an uninfected blood meal. Larval development was slow, taking no less than 4 days to reach the sausage stage, which measured 95-100 microns in length. Molt to the second stage took place on the 6th day; the differentiation into a long muscular and glandular esophagus, and short intestine measuring approximately one fourth of the total larval length were the most significant changes. At the end of this period 4 small but well demarcated tail papillae were observed. The first third-stage larvae appeared at the 8th day post-infection, measuring 650 to 680 microns in length. Beyond the 10th day larvae with an average length of 750 microns were found in the thorax, head, and mouthparts. Four conspicuous tail papillae characteristic of the genus Mansonella were seen in all third-stage larvae.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- B L Travi
- Tulane University, International Collaboration in Infectious Diseases Research Program, New Orleans, Louisiana
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42
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Travi BL, Vélez ID, Brutus L, Segura I, Jaramillo C, Montoya J. Lutzomyia evansi, an alternate vector of Leishmania chagasi in a Colombian focus of visceral leishmaniasis. Trans R Soc Trop Med Hyg 1990; 84:676-7. [PMID: 2278068 DOI: 10.1016/0035-9203(90)90142-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- B L Travi
- Centro Internacional de Investigaciones Médicas, Cali, Colombia
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Montoya J, Jaramillo C, Palma G, Gómez T, Segura I, Travi B. Report of an epidemic outbreak of tegumentary leishmaniasis in a coffee-growing area of Colombia. Mem Inst Oswaldo Cruz 1990; 85:119-21. [PMID: 2215224 DOI: 10.1590/s0074-02761990000100022] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- J Montoya
- Centro Internacional de Investigaciones Médicas, Tulane University-COLCIENCIAS, Cali, Colombia
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44
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Travi BL, Montoya J, Solarte Y, Lozano L, Jaramillo C. Leishmaniasis in Colombia. I. Studies on the phlebotomine fauna associated with endemic foci in the Pacific Coast region. Am J Trop Med Hyg 1988; 39:261-6. [PMID: 3177739 DOI: 10.4269/ajtmh.1988.39.261] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Studies on the phlebotomine fauna related to the leishmaniasis endemic foci of the Colombian Pacific Coast were carried out in the municipalities of Tumaco and Buenaventura. In Inguapí del Guadual, Tumaco, Lutzomyia trapidoi and Lu. gomezi were the predominant anthropophilic species; Lu. panamensis and Lu. hartmanni were less frequent. In Bajo Calima, Buenaventura, Lu. trapidoi represented over 94% of the anthropophilic sandflies. Continuous sampling from 1800 to 0600 hours in Inguapí del Guadual demonstrated that Lu. trapidoi bites mainly at dusk and dawn whereas Lu. gomezi remains active throughout the night. In Inguapí del Guadual, promastigotes were found in 0.1% (2/2, 305) of Lu. trapidoi, 0.2% (3/140) of Lu. gomezi, and 0.2% (1/424) of Lu. panamensis samples collected. In Bajo Calima, 1.9% (8/429) of Lu. trapidoi were found to be infected. Leishmania braziliensis panamensis, the most common Leishmania subspecies in the human population of this endemic focus, was isolated from 1 Lu. trapidoi from Inguapí del Guadual. Parasitological and entomological findings suggest that Lu. trapidoi could be the main vector of Leishmania in these areas, although Lu. gomezi and Lu. panamensis were also predominant.
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Affiliation(s)
- B L Travi
- Tulane University International Collaboration in Infectious Diseases Research Program-Centro Internacional de Investigaciones Médicas-Tulane University-COLCIENCIAS, Cali, Colombia
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Hernández A, Jaramillo C, Ramírez R, Gómez G, Franco D. [Treatment of acute diarrhea in children. Comparative study of 3 oral rehydration solutions and venoclysis in Colombia]. Bol Oficina Sanit Panam 1987; 102:606-16. [PMID: 2956969] [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: 01/03/2023]
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Guhl F, Jaramillo C, Mogollón JH, Rodríguez J, de Sánchez N, Marinkelle CJ. [Seroepidemiologic tracing of chagasic blood donors in an endemic zone (Norte de Santander, Colombia)]. Rev Latinoam Microbiol 1987; 29:63-6. [PMID: 3114856] [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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Young RS, Jaramillo C, McCombs JL, Moore CM, Jorgenson RJ. Fragile-X mental retardation syndrome transmitted through intellectually normal males: implications for genetic counseling. South Med J 1986; 79:405-9. [PMID: 3704696 DOI: 10.1097/00007611-198604000-00004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The fragile-X mental retardation syndrome is the second most common identifiable cause of mental retardation in man. This condition violates many of the expectations for X-linked disorders, including the transmission of the syndrome through men who carry the gene but, for unknown reasons, do not express it. Two new cases of male transmission are presented along with four other cases heretofore unidentified in the literature, bringing the total number of confirmed or probable cases of transmission through normal men to 32. The various unorthodox characteristics of the syndrome are reviewed in light of their influence on genetic counseling. Recommendations for counseling families with fragile-X include evaluating all sons of carrier women psychometrically and cytogenetically, abandoning termination of pregnancies with male fetuses as a means of preventing the fragile-X syndrome, assuming that all mothers of sporadic cases are carriers, and karyotyping at-risk female members at an early age.
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Guhl F, Hudson L, Marinkelle CJ, Morgan SJ, Jaramillo C. Antibody response to experimental Trypanosoma rangeli infection and its implications for immunodiagnosis of South American trypanosomiasis. Acta Trop 1985; 42:311-8. [PMID: 2868633] [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: 01/03/2023]
Abstract
Differential immunodiagnosis of T. rangeli and T. cruzi infections in man poses a particular problem, not only because these parasites share antigenic determinants, as detected by immunofluorescence, but also because they have a similar geographical distribution, the same host range and often identical insect vectors. We show here that whereas mouse anti-T. rangeli sera have significant cross reactivity with T. cruzi by immunofluorescence, they are entirely specific when tested by ELISA, using apparently similar antigen preparations. Immunoprecipitation analysis detected relatively little cross-reactivity between heterologous antisera and parasite combinations. Intriguingly, immunization with T. rangeli epimastigotes was much more powerful than similar immunization with trypomastigotes, and the majority of the antibody was directed against a single polypeptide of apparent Mr 73kDa.
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Trujillo H, Jaramillo C, Restrepo M, Mejía GI, Zapata CT, Ramírez R, Betancur R. [Rotavirus and other enteropathogens in the etiology of acute diarrhea in Medellín, Colombia, 1982]. Bol Oficina Sanit Panam 1985; 98:251-60. [PMID: 3157392] [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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Mazzur S, Nath N, Fang C, Bastiaans MJ, Molinaris JL, Balcaser M, Beker S, Brunings EA, Cameron AR, Farrel V, Fay OH, Labrador-González G, González G, Gutiérrez A, Jaramillo C, Katz R, Leme López MB, Levy-Koenig E, Morales Ayala F, Rodríguez Amaya J, Rodríguez-Moyado H, de Torres RA, Velasco M. [Distribution of hepatitis virus (HBV) markers in blood donors of 13 countries of the Western hemisphere: proceedings of the Red Cross Latin American Workshop on Hepatitis B]. Bol Oficina Sanit Panam 1980; 89:239-48. [PMID: 6449950] [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: 01/20/2023]
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