1
|
Suen A, Pham HT, Suen K, Narayanan S, Song G, Post AB, Mitsuyama P, Wechter D, Le Q, Grumley J, Robinson N, O'Malley M, Lavigne J, Stevens L, Youn V, Yao MS. Intra-Operative Radiotherapy (IORT) in Breast Conserving Therapy in Early-Stage Breast Cancer and DCIS. Int J Radiat Oncol Biol Phys 2023; 117:e209. [PMID: 37784871 DOI: 10.1016/j.ijrobp.2023.06.1096] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Initial breast intra-operative radiotherapy (IORT) results in clinical trials were encouraging though with longer follow up, increased local recurrences have been reported compared with whole breast radiation or other partial breast radiation including accelerated partial breast irradiation (APBI) methods. The goal of the study is to report our prospective single institution IORT breast study outcomes of local recurrence (LR) including true recurrence and breast elsewhere failures, breast cancer specific survival (BCSS), and overall survival (OS) with low energy x-ray IORT in early-stage breast cancer or ductal carcinoma in situ. MATERIALS/METHODS A total of 480 patients with early-stage breast cancer or DCIS were prospectively enrolled in an IRB approved single institution trial and treated with low energy X-ray IORT 20 Gy at time of breast-conserving surgery. Eligibility criteria included ≥ 45 years of age with unifocal tumors < 3 cm deemed candidates for partial mastectomy. Supplemental external beam radiation was recommended for patients with high-risk surgical pathology including multifocal disease, positive nodes, close margins < 2 mm, or lymphovascular invasion. Ipsilateral breast tumor recurrences were classified as true recurrence versus elsewhere failure by location and histology: same/different quadrant and similar/different histology. Kaplan-Meier methods were used to estimate survival probabilities across time. RESULTS Median age of enrolled patients was 64 years with the majority of patients having favorable phenotype with 94% ER+ and 93% Her-2 - disease. 110 patients (23%) had supplemental EBRT delivered; 103 to the whole breast and 7 to the breast and regional nodes. At a median follow up of 73 months (range 17 - 131 months), there were 23 (4.8%) ipsilateral breast tumor recurrences, of which 9 were true recurrences (1.9%) and 14 elsewhere failures (2.9%). One patient with true recurrence and 3 patients with elsewhere breast failures synchronously presented with clinical or radiographic regional node involvement. Seven patient developed contralateral breast cancer and 8 patients developed distant metastases during the follow-up period. There were 2 breast cancer related deaths. At 6-years, overall survival rate was 96.8% and breast cancer specific survival was 98.7%. CONCLUSION Our study outcomes reflect similar outcomes as other reported IORT studies with electron or low energy X-ray in breast cancer, with higher risk of local failure than historical whole breast and other partial breast radiation techniques. This supports current radiation society guidelines for IORT monotherapy for breast cancer to be optimally considered in the context of prospective clinical trials.
Collapse
Affiliation(s)
- A Suen
- Virginia Mason Medical Center, Seattle, WA
| | - H T Pham
- Virginia Mason Medical Center, Seattle, WA
| | - K Suen
- Virginia Mason Medical Center, Seattle, WA
| | | | - G Song
- Virginia Mason Medical Center, Seattle, WA, United States
| | - A B Post
- Virginia Mason Medical Center, Seattle, WA, United States
| | | | - D Wechter
- Virginia Mason Medical Center, Seattle, WA
| | - Q Le
- Virginia Mason Medical Center, Seattle, WA
| | - J Grumley
- St. John's Cancer Institute, Santa Monica, CA
| | - N Robinson
- Virginia Mason Medical Center, Seattle, WA
| | - M O'Malley
- Virginia Mason Medical Center, Seattle, WA, United States
| | - J Lavigne
- Virginia Mason Medical Center, Seattle, WA
| | - L Stevens
- Virginia Mason Medical Center, Seattle, WA
| | - V Youn
- Virginia Mason Medical Center, Seattle, WA
| | - M S Yao
- Virginia Mason Medical Center, Seattle, WA, United States
| |
Collapse
|
2
|
Elbatarny M, Stevens L, Dagenais F, Peterson M, Boodhwani M, Chu M, Ouzounian M. HEMIARCH VS EXTENDED ARCH REPLACEMENT IN ACUTE TYPE A DISSECTION: CANADIAN MULTICENTRE DATA. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.188] [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: 11/02/2022] Open
|
3
|
Stevens L, Chartrand-Lefebvre C, Mansour S, Béland V, Prieto I, Basile F, Forcillo J, Soulez G, Noiseux N. AMI-PONT PROSPECTIVE RANDOMIZED CLINICAL TRIAL FOR ANTEROLATERAL TERRITORY CORONARY ARTERY BYPASS GRAFTING STRATEGIES. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.175] [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: 11/02/2022] Open
|
4
|
Dorn PL, Monroy MC, Stevens L. Sustainable, integrated control of native vectors: The case of Chagas disease in Central America. Front Trop Dis 2022. [DOI: 10.3389/fitd.2022.971000] [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] [Indexed: 11/13/2022] Open
Abstract
Despite successes in reducing transmission, Chagas disease (American trypanosomiasis) remains the greatest economic burden of any parasitic disease in Latin America afflicting mostly the poor and further contributing to poverty. We review a long-term (2001-2022), integrated Ecohealth approach that addresses sustainable development goals to reduce risk of Chagas transmission by the main native vector in Central America, Triatoma dimidiata, s.l. The basis of the Ecohealth intervention was the identification of the risk factors for house infestation, an understanding of and collaboration with local communities, and genetic and proteomic studies that revealed the epidemiology and mechanisms of the rapid reinfestation seen following insecticide application. We review the development of this approach from a pilot project in two Guatemalan villages, to an expanded initiative across three countries with vastly different ecology, cultures, and municipal organization, and finally development of a multi-institutional, large-scale project to develop a strategy to tackle the remaining hot spots in Central America. This integrated Ecohealth approach resulted in reduced risk of transmission as measured by a sustained decrease in house infestation without further use of insecticides, a reduction in vectors with human blood meals and the Chagas parasite, as well as other health and economic benefits. We discuss lessons learned and how this approach could be applied to other vector-borne diseases.
Collapse
|
5
|
Farrell R, Colglazier E, Parker C, Stevens L, Austin ED, Fineman JR. Case Report: Caveolin‐1 Associated with Severe (Pediatric‐onset) Presentation of Pulmonary Arterial Hypertension. Pulm Circ 2022; 12:e12100. [PMID: 35864912 PMCID: PMC9294289 DOI: 10.1002/pul2.12100] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 11/10/2022] Open
Abstract
There has been a growing interest in the role that genetic factors influence pediatric pulmonary vascular disease. In fact, data suggests that genetic factors contribute to ~42% of pediatric‐onset pulmonary hypertension. Although animal and human studies suggest that aberrations in Caveolin1 (CAV1) signaling participate in the development of pulmonary vascular disorders, limited reports of CAV1‐associated heritable pulmonary arterial hypertension (HPAH) exist. This is a case report of a 2‐year‐old female with late recognition of HPAH due to a CAV1 pathogenic variant: c.474del, (p.Leu159Serfs*22)(NM_001753.5). The pedigree demonstrates autosomal dominant transmission with reduced penetrance of PAH, suggestive that additional genetic or environmental factors modify PAH development. Genetic testing and the discovery of rare genetic alterations in PAH during infancy and childhood may aid in identifying disease etiologies, guide therapeutic decisions, and ultimately identify novel therapeutic targets. Moreover, CAV1 genetics implicate variable expressivity and incomplete penetrance for HPAH and underscores the utility of predictive genetic testing for unaffected family members no matter their age.
Collapse
Affiliation(s)
- R Farrell
- Department of Pediatrics UCSF Benioff Children's Hospital, San Francisco California
| | - E Colglazier
- Department of Pediatrics UCSF Benioff Children's Hospital, San Francisco California
| | - C Parker
- Department of Pediatrics UCSF Benioff Children's Hospital, San Francisco California
| | - L Stevens
- Department of Pediatrics UCSF Benioff Children's Hospital, San Francisco California
| | - ED Austin
- Department of Pediatrics Vanderbilt University Medical Center
| | - JR Fineman
- Department of Pediatrics UCSF Benioff Children's Hospital, San Francisco California
| |
Collapse
|
6
|
Case BKM, Young JG, Penados D, Monroy C, Hébert-Dufresne L, Stevens L. Spatial epidemiology and adaptive targeted sampling to manage the Chagas disease vector Triatoma dimidiata. PLoS Negl Trop Dis 2022; 16:e0010436. [PMID: 35653307 PMCID: PMC9162375 DOI: 10.1371/journal.pntd.0010436] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 04/20/2022] [Indexed: 11/18/2022] Open
Abstract
Widespread application of insecticide remains the primary form of control for Chagas disease in Central America, despite only temporarily reducing domestic levels of the endemic vector Triatoma dimidiata and having little long-term impact. Recently, an approach emphasizing community feedback and housing improvements has been shown to yield lasting results. However, the additional resources and personnel required by such an intervention likely hinders its widespread adoption. One solution to this problem would be to target only a subset of houses in a community while still eliminating enough infestations to interrupt disease transfer. Here we develop a sequential sampling framework that adapts to information specific to a community as more houses are visited, thereby allowing us to efficiently find homes with domiciliary vectors while minimizing sampling bias. The method fits Bayesian geostatistical models to make spatially informed predictions, while gradually transitioning from prioritizing houses based on prediction uncertainty to targeting houses with a high risk of infestation. A key feature of the method is the use of a single exploration parameter, α, to control the rate of transition between these two design targets. In a simulation study using empirical data from five villages in southeastern Guatemala, we test our method using a range of values for α, and find it can consistently select fewer homes than random sampling, while still bringing the village infestation rate below a given threshold. We further find that when additional socioeconomic information is available, much larger savings are possible, but that meeting the target infestation rate is less consistent, particularly among the less exploratory strategies. Our results suggest new options for implementing long-term T. dimidiata control. Effective public health interventions for the control and elimination of neglected tropical diseases require an efficient use of resources while still causing long-term disease reduction at the community level. To use resources to best effect, areas most in need of control efforts must be identified. However, strategies for correctly identifying these areas are rarely known due to the complex environmental, biological, and cultural factors shaping disease spread. In turn, incorrect prioritization of control targets can cause the intervention to have no lasting effect. We address this tradeoff between efficiency and efficacy by adapting control priorities throughout an intervention, targeting areas of high uncertainty during the initial stages while shifting to areas of greatest risk at later stages. In the context of controlling Triatoma dimidiata, the primary vector of Chagas disease in several countries in Latin America, our methods provide a means of targeting only a subset of homes for insecticide and housing improvements, while still reducing a village’s overall infestation rate below the critical threshold.
Collapse
Affiliation(s)
- B. K. M. Case
- Vermont Complex Systems Center, University of Vermont, Burlington, Vermont, United States of America
- Department of Computer Science, University of Vermont, Burlington, Vermont, United States of America
- * E-mail:
| | - Jean-Gabriel Young
- Vermont Complex Systems Center, University of Vermont, Burlington, Vermont, United States of America
- Department of Mathematics & Statistics, University of Vermont, Burlington, Vermont, United States of America
| | - Daniel Penados
- Laboratorio de Entomología Aplicada y Parasitología, Universidad de San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
| | - Carlota Monroy
- Laboratorio de Entomología Aplicada y Parasitología, Universidad de San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
| | - Laurent Hébert-Dufresne
- Vermont Complex Systems Center, University of Vermont, Burlington, Vermont, United States of America
- Department of Computer Science, University of Vermont, Burlington, Vermont, United States of America
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| |
Collapse
|
7
|
Yap M, Wilson B, Oar A, Borras J, Bourque J, Lievens Y, Moraes F, Malik M, Polo A, Rodin D, Romero Y, Stevens L, Zubizarreta E. MO-0056 The prioritisation of radiotherapy in National Cancer Control Plans: a global study. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02289-7] [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: 11/30/2022]
|
8
|
Kinser P, Jallo N, Moyer S, Weinstock M, Barrett D, Mughal N, Stevens L, Rider A. “It's always hard being a mom, but the pandemic has made everything harder”: A qualitative exploration of the experiences of perinatal women during the COVID-19 pandemic. Midwifery 2022; 109:103313. [PMID: 35334379 PMCID: PMC8923714 DOI: 10.1016/j.midw.2022.103313] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/07/2022] [Accepted: 03/14/2022] [Indexed: 11/30/2022]
Abstract
Background Understanding the psychosocial impacts of the COVID-19 pandemic in vulnerable groups, such as pregnant and parenting women, is a critical research and clinical imperative. Although many survey-based perinatal health studies have contributed important information about mental health, few have given full voice about the experiences of pregnant and postpartum women during the prolonged worldwide pandemic using a qualitative approach. Objective The purpose of this study is to explore the lived experience of pregnant and postpartum women in the United States during the ongoing COVID-19 pandemic. Design Qualitative phenomenological study. Setting This study was conducted in the community, by recruiting women throughout the U.S. Participants Fifty-four pregnant and postpartum women participated in qualitative interviews. Methods Data from one-on-one semi-structured interviews were analyzed using a team-based phenomenological qualitative approach. Results Two key themes were apparent: the pandemic has shined a light on the many typical struggles of motherhood; and, there is a lack of consistent, community-based or healthcare system resources available to address the complex needs of pregnant and postpartum women, both in general and during the pandemic. Conclusions Going forward, as the world continues to deal with the current pandemic and possible future global health crises, health care systems and providers are encouraged to consider the suggestions provided by these participants: talk early and often to women about mental health; help pregnant and postpartum women create and institute a personal plan for early support of their mental health needs and create an easily accessible mental health network; conceptualize practice methods that enhance coping and resilience; practice in community-based and interdisciplinary teams (e.g., midwives, doulas, perinatal social workers/ psychotherapists) to ensure continuity of care and to foster relationships between providers and pregnant/ postpartum women; and consider learning from other countries’ successful perinatal healthcare practices. Registration Number (& date of first recruitment): not applicable. Tweetable abstract Pregnant and postpartum women insist that mental health care must be overhauled, stating the pandemic has highlighted inherent cracks in the system.
Collapse
Affiliation(s)
- P Kinser
- Virginia Commonwealth University, School of Nursing, 1100 E. Leigh Street, Richmond VA 23298, United States.
| | - N Jallo
- Virginia Commonwealth University, School of Nursing, 1100 E. Leigh Street, Richmond VA 23298, United States.
| | - S Moyer
- Virginia Commonwealth University, School of Nursing, 1100 E. Leigh Street, Richmond VA 23298, United States.
| | - M Weinstock
- Virginia Commonwealth University, Department of Psychology, 806 West Franklin Street, Richmond, Virginia 23284, United States.
| | - D Barrett
- Virginia Commonwealth University, School of Nursing, 1100 E. Leigh Street, Richmond VA 23298, United States.
| | - N Mughal
- Virginia Commonwealth University, School of Nursing, 1100 E. Leigh Street, Richmond VA 23298, United States.
| | - L Stevens
- Virginia Commonwealth University, School of Nursing, 1100 E. Leigh Street, Richmond VA 23298, United States.
| | - A Rider
- Virginia Commonwealth University, School of Nursing, 1100 E. Leigh Street, Richmond VA 23298, United States
| |
Collapse
|
9
|
Lima-Cordón RA, Cahan SH, McCann C, Dorn PL, Justi SA, Rodas A, Monroy MC, Stevens L. Insights from a comprehensive study of Trypanosoma cruzi: A new mitochondrial clade restricted to North and Central America and genetic structure of TcI in the region. PLoS Negl Trop Dis 2021; 15:e0010043. [PMID: 34919556 PMCID: PMC8719664 DOI: 10.1371/journal.pntd.0010043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 12/31/2021] [Accepted: 12/02/2021] [Indexed: 11/22/2022] Open
Abstract
More than 100 years since the first description of Chagas Disease and with over 29,000 new cases annually due to vector transmission (in 2010), American Trypanosomiasis remains a Neglected Tropical Disease (NTD). This study presents the most comprehensive Trypanosoma cruzi sampling in terms of geographic locations and triatomine species analyzed to date and includes both nuclear and mitochondrial genomes. This addresses the gap of information from North and Central America. We incorporate new and previously published DNA sequence data from two mitochondrial genes, Cytochrome oxidase II (COII) and NADH dehydrogenase subunit 1 (ND1). These T. cruzi samples were collected over a broad geographic range including 111 parasite DNA samples extracted from triatomines newly collected across North and Central America, all of which were infected with T. cruzi in their natural environment. In addition, we present parasite reduced representation (Restriction site Associated DNA markers, RAD-tag) genomic nuclear data combined with the mitochondrial gene sequences for a subset of the triatomines (27 specimens) collected from Guatemala and El Salvador. Our mitochondrial phylogenetic reconstruction revealed two of the major mitochondrial lineages circulating across North and Central America, as well as the first ever mitochondrial data for TcBat from a triatomine collected in Central America. Our data also show that within mtTcIII, North and Central America represent an independent, distinct clade from South America, named here as mtTcIIINA-CA, geographically restricted to North and Central America. Lastly, the most frequent lineage detected across North and Central America, mtTcI, was also an independent, distinct clade from South America, noted as mtTcINA-CA. Furthermore, nuclear genome data based on Single Nucleotide Polymorphism (SNP) showed genetic structure of lineage TcI from specimens collected in Guatemala and El Salvador supporting the hypothesis that genetic diversity at a local scale has a geographical component. Our multiscale analysis contributes to the understanding of the independent and distinct evolution of T. cruzi lineages in North and Central America regions. Neglected Tropical Diseases (NTDs) represents socioeconomic burden in most countries of Latin America. Chagas disease, a NTD, is caused by the parasite Trypanosoma cruzi. The disease can be mild, causing swelling and fever, or it can be long-lasting. Left untreated, it often causes heart failure. This study focused on T. cruzi lineages, emphasizing the gap of information from Central America and complementing what is known in North America. Our diverse collection of kissing bugs from North America (United States and Mexico) and Central America identified two of the major mitochondrial lineages circulating in these regions, both representing distinct clades within the already established three clusters of the T. cruzi parasite (mtTcI-mtTcIII): mtTcINA-CA and mtTcIIINA-CA. At a local scale, population genetic structure of T. cruzi revealed that genetic diversity has a notable geographic component. The important insights into the genetic and evolutionary diversity of T. cruzi in North and Central America provide not only the necessity for referencing genomes to identify lineages but the basis to develop more precise and comprehensive diagnostic assays to better detect T. cruzi infections.
Collapse
Affiliation(s)
| | - Sara Helms Cahan
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - Cai McCann
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - Patricia L Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, Louisiana, United States of America
| | - Silvia Andrade Justi
- The Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, Maryland, United States of America.,Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America.,Smithsonian Institution-National Museum of Natural History, Department of Entomology, Washington, DC, United States of America
| | - Antonieta Rodas
- The Applied Entomology and Parasitology Laboratory, Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
| | - María Carlota Monroy
- The Applied Entomology and Parasitology Laboratory, Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| |
Collapse
|
10
|
Stevens L, Lima-Cordón RA, Helms Cahan S, Dorn PL, Monroy MC, Axen HJ, Nguyen A, Hernáiz-Hernánde Y, Rodas A, Justi SA. Catch me if you can: Under-detection of Trypanosoma cruzi (Kinetoplastea: Trypanosomatida) infections in Triatoma dimidiata s.l. (Hemiptera: Reduviidae) from Central America. Acta Trop 2021; 224:106130. [PMID: 34536368 DOI: 10.1016/j.actatropica.2021.106130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 09/02/2021] [Accepted: 09/02/2021] [Indexed: 11/18/2022]
Abstract
Assays for parasite detection in insect vectors provide important information for disease control. American Trypanosomiasis (Chagas disease) is the most devastating vector-borne illness and the fourth most common in Central America behind HIV/AIDS and acute respiratory and diarrheal infections (Peterson et al., 2019). Under-detection of parasites is a general problem which may be influenced by parasite genetic variation; however, little is known about the genetic variation of the Chagas parasite, especially in this region. In this study we compared six assays for detecting the Chagas parasite, Trypanosoma cruzi: genomic reduced representation sequencing (here referred to as genotype-by-sequencing or GBS), two with conventional PCR (i.e., agarose gel detection), two with qPCR, and microscopy. Our results show that, compared to GBS genomic analysis, microscopy and PCR under-detected T. cruzi in vectors from Central America. Of 94 samples, 44% (50/94) were positive based on genomic analysis. The lowest detection, 9% (3/32) was in a subset assayed with microscopy. Four PCR assays, two with conventional PCR and two with qPCR showed intermediate levels of detection. Both qPCR tests and one conventional PCR test targeted the 195 bp repeat of satellite DNA while the fourth test targeted the 18S gene. Statistical analyses of the genomic and PCR results indicate that the PCR assays significantly under detect infections of Central American T. cruzi genotypes.
Collapse
Affiliation(s)
- Lori Stevens
- Department of Biology, University of Vermont, Burlington, VT, 05401, USA.
| | | | - Sara Helms Cahan
- Department of Biology, University of Vermont, Burlington, VT, 05401, USA
| | - Patricia L Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, LA, USA
| | - M Carlota Monroy
- The Applied Entomology and Parasitology Laboratory, Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala
| | - Heather J Axen
- Department of Biology, University of Vermont, Burlington, VT, 05401, USA
| | - Andrew Nguyen
- Department of Biology, University of Vermont, Burlington, VT, 05401, USA
| | | | - Antonieta Rodas
- The Applied Entomology and Parasitology Laboratory, Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala
| | - Silvia A Justi
- The Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, MD, USA; Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| |
Collapse
|
11
|
Ibrahim M, Stevens L, Ouzounian M, Hage A, Dagenais F, Peterson M, El-Hamamsy I, Boodhwani M, Bozinovski J, Moon M, Yamashita MH, Atoui R, Bittira B, Payne D, Lachapelle K, Chu M, Chung J. EVOLVING SURGICAL TECHNIQUES AND IMPROVING OUTCOMES FOR AORTIC ARCH SURGERY IN CANADA. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.212] [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: 11/28/2022] Open
|
12
|
Kelkar D, Borse M, Godbole G, Kurlekar U, Dinneen E, Stevens L, Slack M. 11 Results from the first-in-human clinical trial of a new robot-assisted surgical system for total laparoscopic hysterectomy. Am J Obstet Gynecol 2021. [DOI: 10.1016/j.ajog.2021.04.035] [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: 11/15/2022]
|
13
|
Andrade Justi S, Soghigian J, Pecor DB, Caicedo-Quiroga L, Rutvisuttinunt W, Li T, Stevens L, Dorn PL, Wiegmann B, Linton YM. From e-voucher to genomic data: Preserving archive specimens as demonstrated with medically important mosquitoes (Diptera: Culicidae) and kissing bugs (Hemiptera: Reduviidae). PLoS One 2021; 16:e0247068. [PMID: 33630885 PMCID: PMC7906454 DOI: 10.1371/journal.pone.0247068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/29/2021] [Indexed: 12/26/2022] Open
Abstract
Scientific collections such as the U.S. National Museum (USNM) are critical to filling knowledge gaps in molecular systematics studies. The global taxonomic impediment has resulted in a reduction of expert taxonomists generating new collections of rare or understudied taxa and these large historic collections may be the only reliable source of material for some taxa. Integrated systematics studies using both morphological examinations and DNA sequencing are often required for resolving many taxonomic issues but as DNA methods often require partial or complete destruction of a sample, there are many factors to consider before implementing destructive sampling of specimens within scientific collections. We present a methodology for the use of archive specimens that includes two crucial phases: 1) thoroughly documenting specimens destined for destructive sampling—a process called electronic vouchering, and 2) the pipeline used for whole genome sequencing of archived specimens, from extraction of genomic DNA to assembly of putative genomes with basic annotation. The process is presented for eleven specimens from two different insect subfamilies of medical importance to humans: Anophelinae (Diptera: Culicidae)—mosquitoes and Triatominae (Hemiptera: Reduviidae)—kissing bugs. Assembly of whole mitochondrial genome sequences of all 11 specimens along with the results of an ortholog search and BLAST against the NCBI nucleotide database are also presented.
Collapse
Affiliation(s)
- Silvia Andrade Justi
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
- * E-mail:
| | - John Soghigian
- Department of Entomology, North Carolina State University, Raleigh, NC, United States of America
| | - David B. Pecor
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
| | - Laura Caicedo-Quiroga
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
| | - Wiriya Rutvisuttinunt
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
| | - Tao Li
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, VT, United States of America
| | - Patricia L. Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, LA, United States of America
| | - Brian Wiegmann
- Department of Entomology, North Carolina State University, Raleigh, NC, United States of America
| | - Yvonne-Marie Linton
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
| |
Collapse
|
14
|
Penados D, Pineda J, Catalan M, Avila M, Stevens L, Agreda E, Monroy C. Infestation dynamics of Triatoma dimidiata in highly deforested tropical dry forest regions of Guatemala. Mem Inst Oswaldo Cruz 2020; 115:e200203. [PMID: 33146245 PMCID: PMC7592497 DOI: 10.1590/0074-02760200203] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 10/05/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Deforestation, driven by anthropogenic change in land use, influences the behaviour and abundance of vector-borne diseases. For various species of Chagas disease vectors, there is evidence that change in land use affects population density and abundance. Triatoma dimidiata is the most important Chagas vector in Guatemala, and at least one million people live in T. dimidiata endemic areas; however, infestation dynamics vary among regions, from high infestation with all life stages to low seasonal infestation by sylvatic adults. OBJECTIVES The aim of this study was to evaluate how land-use, combined with domiciliary risk factors, influences the infestation dynamics of T. dimidiata for four villages in a dry forest region with a strong deforestation history. METHODS Land use, measured with drone and satellite images, was classified into four categories (houses, monocultures and pastures, woodland and shrubland, and bare soil). Domiciliary risk factors and infestation were assessed through entomological surveys. Statistical analyses compared infestation indices and the ability of land use and domiciliary risk factors to explain infestation. FINDINGS Two villages had significantly higher infestation (26 and 30% vs. 5 and 6%), yet all villages had high colonisation (71-100% of infested houses had immature insects), with no significant difference among them. Because of the high level of deforestation across the study area, land use was not related to infestation; however, domiciliary risk factors were. A model based on four weighted domiciliary risk factors (adobe or bajareque walls, intradomicile animals, intradomicile clutter, and dirt floors) explains the infestation risk. MAIN CONCLUSIONS Because almost all infested houses have reproducing populations in this deforested dry forest region and statistical analysis identified the domiciliary risk factors for infestation, intermediate and long-term control of Chagas disease vectors in this region requires management of these risk factors.
Collapse
Affiliation(s)
- Daniel Penados
- Universidad de San Carlos de Guatemala, Laboratorio de Entomología Aplicada y Parasitología, Ciudad de Guatemala, Guatemala
| | - José Pineda
- Universidad de San Carlos de Guatemala, Laboratorio de Entomología Aplicada y Parasitología, Ciudad de Guatemala, Guatemala
| | - Michelle Catalan
- Universidad de San Carlos de Guatemala, Facultad de Ciencias Químicas y Farmacia, Escuela de Biología, Ciudad de Guatemala, Guatemala
| | - Miguel Avila
- Universidad de San Carlos de Guatemala, Centros de Estudios Conservacionistas, Ciudad de Guatemala, Guatemala
| | - Lori Stevens
- University of Vermont, Department of Biology, Burlington, VT, USA
| | - Emmanuel Agreda
- Universidad de San Carlos de Guatemala, Laboratorio de Entomología Aplicada y Parasitología, Ciudad de Guatemala, Guatemala
| | - Carlota Monroy
- Universidad de San Carlos de Guatemala, Laboratorio de Entomología Aplicada y Parasitología, Ciudad de Guatemala, Guatemala
| |
Collapse
|
15
|
Khalil K, Forcillo J, Boukhris M, Badreddine M, Ben Ali W, Stevens L, Potvin J, Gobeil F, Noiseux N, Masson J. VALIDATION OF A HEART TEAM PERFORMANCE WHO ASSESSED HIGH RISK PATIENTS WITH SEVERE SYMPTOMATIC AORTIC STENOSIS. Can J Cardiol 2020. [DOI: 10.1016/j.cjca.2020.07.174] [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: 11/28/2022] Open
|
16
|
Dewar GA, Urry RJ, Clifford S, Katsapas M, Stevens L, Kloppers A. Bioring ® gastric banding for obesity in a private South African hospital. S AFR J SURG 2020; 58:115-121. [PMID: 33231004] [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: 06/11/2023]
Abstract
BACKGROUND Obesity is a significant health problem in South Africa. Surgery is the most effective means of durable weight loss for the morbidly obese. Of the surgical options, laparoscopic adjustable gastric banding is the most controversial. We aimed to assess a single surgeon's experience with a specific band. METHODS A retrospective observational study of a continuous cohort of laparoscopic adjustable gastric Cousin Bioring® band placements from a single private South African hospital was conducted. Three hundred and fifty bands were placed in 347 patients, 75% were female. Variables analysed were BMI obesity class, comorbidities, weight loss, diabetes resolution, adherence to aftercare, patient satisfaction, complications and death. RESULTS Outcomes were assessed in 343 patients (4 patients lost to follow-up). The mean follow-up was 39 months (IQR 29-66 months). The mean preoperative BMI was 43.3 kg/m2 (IQR 37.4-47.6 kg/m2). Most weight loss occurred in the first year, and 66% achieved > 40% excess weight loss. Resolution of type 2 diabetes and prediabetes occurred in 56.4% and 89.8% of patients respectively. Increasing age (p = 0.002), class 3 obesity (p < 0.001) and suboptimal aftercare (p < 0.001) were associated with failure. One patient developed band erosion and 40 developed band slippage, 34 of whom underwent secondary surgery (32 removals, 2 revisions). All complications were grade I-III. There was no high grade complication, and no death. CONCLUSIONS Bioring® gastric banding achieved moderately good weight loss and resolution of type 2 diabetes with a low complication rate. BMI > 60 and suboptimal aftercare predicted poor outcome.
Collapse
Affiliation(s)
| | - R J Urry
- George Mukhari Hospital, South Africa
| | | | | | | | | |
Collapse
|
17
|
Hanley JP, Rizzo DM, Stevens L, Helms Cahan S, Dorn PL, Morrissey LA, Rodas AG, Orantes LC, Monroy C. Novel Evolutionary Algorithm Identifies Interactions Driving Infestation of Triatoma dimidiata, a Chagas Disease Vector. Am J Trop Med Hyg 2020; 103:735-744. [PMID: 32524965 DOI: 10.4269/ajtmh.18-0733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Chagas disease is a lethal, neglected tropical disease. Unfortunately, aggressive insecticide-spraying campaigns have not been able to eliminate domestic infestation of Triatoma dimidiata, the native vector in Guatemala. To target interventions toward houses most at risk of infestation, comprehensive socioeconomic and entomologic surveys were conducted in two towns in Jutiapa, Guatemala. Given the exhaustively large search space associated with combinations of risk factors, traditional statistics are limited in their ability to discover risk factor interactions. Two recently developed statistical evolutionary algorithms, specifically designed to accommodate risk factor interactions and heterogeneity, were applied to this large combinatorial search space and used in tandem to identify sets of risk factor combinations associated with infestation. The optimal model includes 10 risk factors in what is known as a third-order disjunctive normal form (i.e., infested households have chicken coops AND deteriorated bedroom walls OR an accumulation of objects AND dirt floors AND total number of occupants ≥ 5 AND years of electricity ≥ 5 OR poor hygienic condition ratings AND adobe walls AND deteriorated walls AND dogs). Houses with dirt floors and deteriorated walls have been reported previously as risk factors and align well with factors currently targeted by Ecohealth interventions to minimize infestation. However, the tandem evolutionary algorithms also identified two new socioeconomic risk factors (i.e., households having many occupants and years of electricity ≥ 5). Identifying key risk factors may help with the development of new Ecohealth interventions and/or reduce the survey time needed to identify houses most at risk.
Collapse
Affiliation(s)
- John P Hanley
- Department of Civil and Environmental Engineering, University of Vermont, Burlington, Vermont
| | - Donna M Rizzo
- Department of Civil and Environmental Engineering, University of Vermont, Burlington, Vermont
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, Vermont
| | - Sara Helms Cahan
- Department of Biology, University of Vermont, Burlington, Vermont
| | - Patricia L Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, Louisiana
| | - Leslie A Morrissey
- Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, Vermont
| | - Antonieta Guadalupe Rodas
- Laboratorio de Entomología Aplicada y Parasitología, Escuela de Biología, Universidad de San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
| | - Lucia C Orantes
- Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, Vermont
| | - Carlota Monroy
- Laboratorio de Entomología Aplicada y Parasitología, Escuela de Biología, Universidad de San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
| |
Collapse
|
18
|
St-Louis R, Stevens L, Brochiero E, Poirier C, Berthiaume Y, Noiseux N, Nasir B, Ferraro P. Preoperative Trajectories in Cystic Fibrosis and Their Association with Short and Long Term Survival after Lung Transplantation. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.455] [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: 10/24/2022] Open
|
19
|
Landry C, Adam D, Privé A, Menaouar A, Dagenais A, Merjaneh M, Germain J, Noiseux N, Cailhier J, Nasir B, Stevens L, Berthiaume Y, Ferraro P, Brochiero E. Alveolar Epithelial Damage and Dysfunction as Common Features of Ischemia/Reperfusion Injury and Primary Graft Dysfunction in Lung Transplants. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.958] [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: 11/28/2022] Open
|
20
|
Kelkar D, Borse M, Godbole G, Kurlekar U, Dinneen E, Stevens L, Slack M. 43: First-in-human clinical trial of a new robot-assisted surgical system for total laparoscopic hysterectomy. Am J Obstet Gynecol 2020. [DOI: 10.1016/j.ajog.2019.12.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
21
|
Dewar GA, Urry RJ, Clifford S, Katsapas M, Stevens L, Kloppers A. Bioring® gastric banding for obesity in a private South African hospital. S AFR J SURG 2020. [DOI: 10.17159/2078-5151/2020/v58n3a3066] [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: 11/05/2022]
|
22
|
Hébert M, Cartier R, El-Hamamsy I, Dagenais F, Langlois Y, de Varennes B, Greentree D, Stevens L. AN ADAPTED CLAVIEN-DINDO CLASSIFICATION AND COMPREHENSIVE COMPLICATIONS INDEX RELIABLY REPRESENT EARLY POSTOPERATIVE OUTCOMES IN CARDIAC SURGERY. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.318] [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: 11/15/2022] Open
|
23
|
D'aronco L, Forcillo J, Ben Ali W, Stevens L, Ibrahim R, Masson J, Kouz R, Noiseux N, Asgar A, Potvin J, Dorval J, Gobeil F, Cartier R, Bonan R, Rosu C. VALIDATION OF A HEART TEAM PERFORMANCE FOR PATIENTS WITH SEVERE AORTIC STENOSIS. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.513] [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: 11/17/2022] Open
|
24
|
Mazine A, Arias-Vézina G, Bouhout I, Maftoon S, Stevens L, Demers P, Pellerin M, Bouchard D. MINIMALLY INVASIVE MITRAL VALVE SURGERY IS ASSOCIATED WITH A LOWER INCIDENCE OF ACUTE KIDNEY INJURY. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.471] [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: 10/25/2022] Open
|
25
|
Cahan SH, Orantes LC, Wallin KF, Hanley JP, Rizzo DM, Stevens L, Dorn PL, Rodas A, Monroy C. Residual survival and local dispersal drive reinfestation by Triatoma dimidiata following insecticide application in Guatemala. Infection, Genetics and Evolution 2019; 74:104000. [DOI: 10.1016/j.meegid.2019.104000] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 11/30/2022]
|
26
|
Keller JI, Lima-Cordón R, Monroy MC, Schmoker AM, Zhang F, Howard A, Ballif BA, Stevens L. Protein mass spectrometry detects multiple bloodmeals for enhanced Chagas disease vector ecology. Infect Genet Evol 2019; 74:103998. [PMID: 31401306 DOI: 10.1016/j.meegid.2019.103998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/22/2019] [Accepted: 08/07/2019] [Indexed: 10/26/2022]
Abstract
Chagas disease, a neglected tropical disease endemic in Latin America, is caused by the protozoan parasite Trypanosoma cruzi and is responsible for significant health impacts, especially in rural communities. The parasite is transmitted by insect vectors in the Triatominae subfamily and due to lack of vaccines and limited treatment options, vector control is the main way of controlling the disease. Knowing what vectors are feeding on directly enhances our understanding of the ecology and biology of the different vector species and can potentially aid in engaging communities in active disease control, a concept known as Ecohealth management. We evaluated bloodmeals in rural community, house-caught insect vectors previously evaluated for bloodmeals via DNA analysis as part of a larger collaborative project from three countries in Central America, including Guatemala. In addition to identifying bloodmeals in 100% of all samples using liquid chromatography tandem mass spectrometry (LC-MS/MS) (n = 50), strikingly for 53% of these samples there was no evidence of a recent bloodmeal by DNA-PCR. As individual vectors often feed on multiple sources, we developed an enhanced detection pipeline, and showed the ability to quantify a bloodmeal using stable-isotope-containing synthetic references peptides, a first step in further exploration of species-specific bloodmeal composition. Furthermore, we show that a lower resolution mass spectrometer is sufficient to correctly identify taxa from bloodmeals, an important and strong attribute of our LC-MS/MS-based method, opening the door to using proteomics in countries where Chagas disease is endemic.
Collapse
Affiliation(s)
- Judith I Keller
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Raquel Lima-Cordón
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - M Carlota Monroy
- Laboratorio de Entomología Aplicada y Parasitología, Escuela de Biología, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Edificio T-10 Ciudad Universitaria Zona 12, Ciudad de Guatemala, Guatemala; Department of Biology, University of Vermont, Burlington, VT, United States
| | - Anna M Schmoker
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Fan Zhang
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Alan Howard
- Statistical Software Support and Consulting Services, University of Vermont, Burlington, VT, United States
| | - Bryan A Ballif
- Department of Biology, University of Vermont, Burlington, VT, United States.
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, VT, United States.
| |
Collapse
|
27
|
Lim S, Burton C, Barrans S, Kirkwood A, Patrick P, Stevens L, Clifton-Hadley L, Johnson P, Thirdborough S. TRANSCRIPTIONAL NETWORKS ASSOCIATED WITH TREATMENT FAILURE IN ADVANCED-STAGE HODGKIN LYMPHOMA: DATA FROM THE RATHL TRIAL (CRUK/07/033). Hematol Oncol 2019. [DOI: 10.1002/hon.103_2630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- S.H. Lim
- Centre for Cancer Immunology & CRUK Centre; University of Southampton; Southampton United Kingdom
| | - C. Burton
- HMDS; Leeds Cancer Centre; Leeds United Kingdom
| | - S. Barrans
- HMDS; Leeds Cancer Centre; Leeds United Kingdom
| | - A. Kirkwood
- CR UK & UCL Cancer Trials Centre; UCL Cancer Institute, University College London; London United Kingdom
| | - P. Patrick
- CR UK & UCL Cancer Trials Centre; UCL Cancer Institute, University College London; London United Kingdom
| | - L. Stevens
- CR UK & UCL Cancer Trials Centre; UCL Cancer Institute, University College London; London United Kingdom
| | - L. Clifton-Hadley
- CR UK & UCL Cancer Trials Centre; UCL Cancer Institute, University College London; London United Kingdom
| | - P.W. Johnson
- Centre for Cancer Immunology & CRUK Centre; University of Southampton; Southampton United Kingdom
| | - S.M. Thirdborough
- Centre for Cancer Immunology & CRUK Centre; University of Southampton; Southampton United Kingdom
| |
Collapse
|
28
|
Lima-Cordón RA, Monroy MC, Stevens L, Rodas A, Rodas GA, Dorn PL, Justi SA. Description of Triatomahuehuetenanguensis sp. n., a potential Chagas disease vector (Hemiptera, Reduviidae, Triatominae). Zookeys 2019:51-70. [PMID: 30728739 PMCID: PMC6361876 DOI: 10.3897/zookeys.820.27258] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [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] [Received: 06/06/2018] [Accepted: 11/04/2018] [Indexed: 11/22/2022] Open
Abstract
A new species of the genus Triatoma Laporte, 1832 (Hemiptera, Reduviidae) is described based on specimens collected in the department of Huehuetenango, Guatemala. Triatomahuehuetenanguensissp. n. is closely related to T.dimidiata (Latreille, 1811), with the following main morphological differences: lighter color; smaller overall size, including head length; and width and length of the pronotum. Natural Trypanosomacruzi (Chagas, 1909) infection, coupled with its presence in domestic habitats, makes this species a potentially important vector of Trypanosomacruzi in Guatemala.
Collapse
Affiliation(s)
| | | | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, Vermont, United States
| | | | | | - Patricia L Dorn
- pplied Entomology and Parasitology Laboratory at Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala
| | - Silvia A Justi
- Department of Biology, University of Vermont, Burlington, Vermont, United States.,Department of Biological Sciences, Loyola University New Orleans, New Orleans, Louisiana, USA.,Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Maryland, USA
| |
Collapse
|
29
|
Lima-Cordón RA, Stevens L, Solórzano Ortíz E, Rodas GA, Castellanos S, Rodas A, Abrego V, Zúniga Valeriano C, Monroy MC. Implementation science: Epidemiology and feeding profiles of the Chagas vector Triatoma dimidiata prior to Ecohealth intervention for three locations in Central America. PLoS Negl Trop Dis 2018; 12:e0006952. [PMID: 30485265 PMCID: PMC6287883 DOI: 10.1371/journal.pntd.0006952] [Citation(s) in RCA: 14] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/10/2018] [Accepted: 10/29/2018] [Indexed: 11/19/2022] Open
Abstract
The Ecohealth strategy is a multidisciplinary data-driven approach used to improve the quality of people's lives in Chagas disease endemic areas, such as regions of Central America. Chagas is a vector-borne disease caused by the parasite Trypanosoma cruzi. In Central America, the main vector is Triatoma dimidiata. Because successful implementation of the Ecohealth approach reduced home infestation in Jutiapa department, Guatemala, it was scaled-up to three localities, one in each of three Central American countries (Texistepeque, El Salvador; San Marcos de la Sierra, Honduras and Olopa, Guatemala). As a basis for the house improvement phase of the Ecohealth program, we determined if the localities differ in the role of sylvatic, synanthropic and domestic animals in the Chagas transmission cycle by measuring entomological indices, blood meal sources and parasite infection from vectors collected in and around houses. The Polymerase Chain Reaction (PCR) with taxa specific primers to detect both, blood sources and parasite infection, was used to assess 71 T. dimidiata from Texistepeque, 84 from San Marcos de la Sierra and 568 from Olopa. Our results show that infestation (12.98%) and colonization (8.95%) indices were highest in Olopa; whereas T. cruzi prevalence was higher in Texistepeque and San Marcos de la Sierra (>40%) than Olopa (8%). The blood meal source profiles showed that in Olopa, opossum might be important in linking the sylvatic and domestic Chagas transmission cycle, whereas in San Marcos de la Sierra dogs play a major role in maintaining domestic transmission. For Texistepeque, bird was the major blood meal source followed by human. When examining the different life stages, we found that in Olopa, the proportion bugs infected with T. cruzi is higher in adults than nymphs. These findings highlight the importance of location-based recommendations for decreasing human-vector contact in the control of Chagas disease.
Collapse
Affiliation(s)
- Raquel Asunción Lima-Cordón
- The Applied Entomology and Parasitology Laboratory at Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - Elizabeth Solórzano Ortíz
- The Applied Entomology and Parasitology Laboratory at Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
| | - Gabriela Anaité Rodas
- The Applied Entomology and Parasitology Laboratory at Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
| | - Salvador Castellanos
- The Applied Entomology and Parasitology Laboratory at Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
| | - Antonieta Rodas
- The Applied Entomology and Parasitology Laboratory at Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
| | - Vianney Abrego
- Centro de Investigación y desarrollo en salud (CENSALUD-CID), Universidad de El Salvador, San Salvador, El Salvador
| | | | - María Carlota Monroy
- The Applied Entomology and Parasitology Laboratory at Biology School, Pharmacy Faculty, San Carlos University of Guatemala, Guatemala City, Guatemala
| |
Collapse
|
30
|
Adjibodu B, Mukumbola kasongo A, Potvin J, Gobeil F, Forcillo J, Stevens L, Noiseux N, Masson J. EFFECTIVENESS AND LIMITATIONS OF AN EARLY DISCHARGE CARE PATHWAY FOR TRANS-CATHETER AORTIC VALVE RECIPIENTS IN A MODERATE VOLUME CENTRE. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.218] [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: 11/26/2022] Open
|
31
|
Stevens L, Dagenais F, Perrault L, Jeanmart H, David G, de Varennes B, Noiseux N, Langlois Y. DEVELOPMENT OF A PROVINCIAL RISK PREDICTION MODEL FOR ISOLATED CORONARY ARTERY BYPASS GRAFTING. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.389] [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: 11/29/2022] Open
|
32
|
Der Sarkissian S, Sauvé J, Larose É, Busque L, Aceros H, Prieto I, Basile F, Stevens L, Mansour S, Roy D, Noiseux N. DIFFERENTIAL EXPRESSION ANALYSIS OF CD133+ STEM CELLS IN ACUTE AND CHRONIC MI PATIENTS WITH LV DYSFUNCTION REVEALS PATHWAYS ASSOCIATED WITH THERAPEUTIC EFFECTIVENESS OF STEM CELL THERAPY FOR ISCHEMIC CARDIOMYOPATHIES. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.195] [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: 10/28/2022] Open
|
33
|
Orantes LC, Monroy C, Dorn PL, Stevens L, Rizzo DM, Morrissey L, Hanley JP, Rodas AG, Richards B, Wallin KF, Helms Cahan S. Uncovering vector, parasite, blood meal and microbiome patterns from mixed-DNA specimens of the Chagas disease vector Triatoma dimidiata. PLoS Negl Trop Dis 2018; 12:e0006730. [PMID: 30335763 PMCID: PMC6193617 DOI: 10.1371/journal.pntd.0006730] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/02/2018] [Indexed: 12/25/2022] Open
Abstract
Chagas disease, considered a neglected disease by the World Health Organization, is caused by the protozoan parasite Trypanosoma cruzi, and transmitted by >140 triatomine species across the Americas. In Central America, the main vector is Triatoma dimidiata, an opportunistic blood meal feeder inhabiting both domestic and sylvatic ecotopes. Given the diversity of interacting biological agents involved in the epidemiology of Chagas disease, having simultaneous information on the dynamics of the parasite, vector, the gut microbiome of the vector, and the blood meal source would facilitate identifying key biotic factors associated with the risk of T. cruzi transmission. In this study, we developed a RADseq-based analysis pipeline to study mixed-species DNA extracted from T. dimidiata abdomens. To evaluate the efficacy of the method across spatial scales, we used a nested spatial sampling design that spanned from individual villages within Guatemala to major biogeographic regions of Central America. Information from each biotic source was distinguished with bioinformatics tools and used to evaluate the prevalence of T. cruzi infection and predominant Discrete Typing Units (DTUs) in the region, the population genetic structure of T. dimidiata, gut microbial diversity, and the blood meal history. An average of 3.25 million reads per specimen were obtained, with approximately 1% assigned to the parasite, 20% to the vector, 11% to bacteria, and 4% to putative blood meals. Using a total of 6,405 T. cruzi SNPs, we detected nine infected vectors harboring two distinct DTUs: TcI and a second unidentified strain, possibly TcIV. Vector specimens were sufficiently variable for population genomic analyses, with a total of 25,710 T. dimidiata SNPs across all samples that were sufficient to detect geographic genetic structure at both local and regional scales. We observed a diverse microbiotic community, with significantly higher bacterial species richness in infected T. dimidiata abdomens than those that were not infected. Unifrac analysis suggests a common assemblage of bacteria associated with infection, which co-occurs with the typical gut microbial community derived from the local environment. We identified vertebrate blood meals from five T. dimidiata abdomens, including chicken, dog, duck and human; however, additional detection methods would be necessary to confidently identify blood meal sources from most specimens. Overall, our study shows this method is effective for simultaneously generating genetic data on vectors and their associated parasites, along with ecological information on feeding patterns and microbial interactions that may be followed up with complementary approaches such as PCR-based parasite detection, 18S eukaryotic and 16S bacterial barcoding.
Collapse
Affiliation(s)
- Lucia C. Orantes
- Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, Vermont, United States of America
| | - Carlota Monroy
- Laboratorio de Entomología Aplicada y Parasitología, Escuela de Biología, Universidad San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
| | - Patricia L. Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, Louisiana, United States of America
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - Donna M. Rizzo
- Department of Civil and Environmental Engineering, University of Vermont, Burlington, Vermont, United States of America
| | - Leslie Morrissey
- Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, Vermont, United States of America
| | - John P. Hanley
- Department of Civil and Environmental Engineering, University of Vermont, Burlington, Vermont, United States of America
| | - Antonieta Guadalupe Rodas
- Laboratorio de Entomología Aplicada y Parasitología, Escuela de Biología, Universidad San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
| | - Bethany Richards
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, Louisiana, United States of America
| | - Kimberly F. Wallin
- Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, Vermont, United States of America
- USDA Forest Service, Northern Research Station, Burlington, Vermont, United States of America
| | - Sara Helms Cahan
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| |
Collapse
|
34
|
Keller JI, Schmidt JO, Schmoker AM, Ballif BA, Stevens L. Protein mass spectrometry extends temporal blood meal detection over polymerase chain reaction in mouse-fed Chagas disease vectors. Mem Inst Oswaldo Cruz 2018; 113:e180160. [PMID: 30277492 PMCID: PMC6167943 DOI: 10.1590/0074-02760180160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/03/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Chagas disease is highly prevalent in Latin America, and vector control is the most effective control strategy to date. We have previously shown that liquid chromatography tandem mass spectrometry (LC-MS/MS) is a valuable tool for identifying triatomine vector blood meals. OBJECTIVES The purpose of this study was to determine blood meal detection ability as a function of method [polymerase chain reaction (PCR) vs. LC-MS/MS], time since feeding, and the effect of molting in mouse-fed triatomine insect vectors targeting hemoglobin and albumin proteins with LC-MS/MS and short interspersed nuclear elements (SINE)-based PCR. METHODS We experimentally fed Triatoma protracta on mice and used LC-MS/MS to detect hemoglobin and albumin peptides over time post-feeding and post-molting (≤ 12 weeks). We compared LC-MS/MS results with those of a standard PCR method based on SINEs. FINDINGS Hemoglobin-based LC-MS/MS detected blood meals most robustly at all time points post-feeding. Post-molting, no blood meals were detected with PCR, whereas LC-MS/MS detected mouse hemoglobin and albumin up to 12 weeks. MAIN CONCLUSIONS In our study, the hemoglobin signature in the insect abdomen lasted longer than that of albumin and DNA. LC-MS/MS using hemoglobin shows promise for identifying triatomine blood meals over long temporal scales and even post-molting. Clarifying the frequency of blood-feeding on different hosts can foster our understanding of vector behavior and may help devise sounder disease-control strategies, including Ecohealth (community based ecosystem management) approaches.
Collapse
Affiliation(s)
- Judith I Keller
- University of Vermont, Department of Biology, Burlington, VT, United States of America
| | - Justin O Schmidt
- Southwestern Biological Institute, Tucson, AZ, United States of America
| | - Anna M Schmoker
- University of Vermont, Department of Biology, Burlington, VT, United States of America
| | - Bryan A Ballif
- University of Vermont, Department of Biology, Burlington, VT, United States of America
| | - Lori Stevens
- University of Vermont, Department of Biology, Burlington, VT, United States of America
| |
Collapse
|
35
|
Gallant JP, Lima-Cordón RA, Justi SA, Monroy MC, Viola T, Stevens L. The role of natural selection in shaping genetic variation in a promising Chagas disease drug target: Trypanosoma cruzi trans-sialidase. Infect Genet Evol 2018; 62:151-159. [PMID: 29684709 PMCID: PMC6196115 DOI: 10.1016/j.meegid.2018.04.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 01/20/2023]
Abstract
Rational drug design creates innovative therapeutics based on knowledge of the biological target to provide more effective and responsible therapeutics. Chagas disease, endemic throughout Latin America, is caused by Trypanosoma cruzi, a protozoan parasite. Current therapeutics are problematic with widespread calls for new approaches. Researchers are using rational drug design for Chagas disease and one target receiving considerable attention is the T. cruzi trans-sialidase protein (TcTS). In T. cruzi, trans-sialidase catalyzes the transfer of sialic acid from a mammalian host to coat the parasite surface membrane and avoid immuno-detection. However, the role of TcTS in pathology variance among and within genetic variants of the parasite is not well understood despite numerous studies. Previous studies reported the crystalline structure of TcTS and the TS protein structure in other trypanosomes where the enzyme is often inactive. However, no study has examined the role of natural selection in genetic variation in TcTS. To understand the role of natural selection in TcTS DNA sequence and protein variation, we examined a 471 bp portion of the TcTS gene from 48 T. cruzi samples isolated from insect vectors. Because there may be multiple parasite genotypes infecting one insect and there are multiple copies of TcTS per parasite genome, all 48 sequences had multiple polymorphic bases. To resolve these polymorphisms, we examined cloned sequences from two insect vectors. The data are analyzed to understand the role of natural selection in shaping genetic variation in TcTS and interpreted in light of the possible role of TcTS as a drug target. The analysis highlights negative or purifying selection on three amino acids previously shown to be important in TcTS transfer activity. One amino acid in particular, Tyr342, is a strong candidate for a drug target because it is under negative selection and amino acid substitutions inactivate TcTS transfer activity. AUTHOR SUMMARY: Chagas disease is caused by the protozoan parasite Trypanosoma cruzi and transmitted to humans and other mammals primarily by Triatomine insects. Being endemic in many South and Central American countries and affecting millions of people the need for new more effective and safe therapies is evident. Here, we examine genetic variation and natural selection on DNA (471 bp) and amino acid (157 aa) sequence data of the T. cruzi trans-sialdiase (TcTS) protein, often suggested as a candidate for rational drug design. In our surveyed region of the protein there were five amino acid residues that have been shown to be integral to the function of TcTS. We found that three were under strong negative selection making them ideal candidates for drug design; however, one was under balancing selection and should be avoided as a drug target. Our study provides new information into identifying potential targets for a new Chagas drug.
Collapse
Affiliation(s)
- Joseph P Gallant
- Department of Biology, University of Vermont, Burlington, VT, United States; Department of Pharmacology, University of Vermont, Burlington, VT. United States
| | | | - Silvia A Justi
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Maria Carlota Monroy
- Biology School, Universidad de San Carlos de Guatemala, Guatemala City, Guatemala
| | - Toni Viola
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Lori Stevens
- Department of Pharmacology, University of Vermont, Burlington, VT. United States.
| |
Collapse
|
36
|
Dorn PL, Justi SA, Dale C, Stevens L, Galvão C, Lima-Cordón R, Monroy C. Description of Triatoma mopan sp. n. from a cave in Belize (Hemiptera, Reduviidae, Triatominae). Zookeys 2018:69-95. [PMID: 30057472 PMCID: PMC6058004 DOI: 10.3897/zookeys.775.22553] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 06/04/2018] [Indexed: 11/12/2022] Open
Abstract
In this paper, Triatomamopansp. n. is described based on five males and six females collected in the Rio Frio cave, Cayo District, Belize. This species is similar to Triatomadimidiata (Latreille), but can be distinguished by characters found on the pronotum, legs, and abdomen. Geometric morphometry and phylogenetic comparisons are also provided. Presently, the species is known only from the type locality and is a potential Chagas vector.
Collapse
Affiliation(s)
- Patricia L Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, LA, USA
| | - Silvia A Justi
- Department of Biology, University of Vermont, Burlington, VT, USA.,The Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, 4210 Silver Hill Rd, Suitland, MD 20746-2863, USA
| | - Carolina Dale
- Laboratório de Biodiversidade Entomológica, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Cleber Galvão
- Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | | | - Carlota Monroy
- LENAP, University of San Carlos, Guatemala City, Guatemala
| |
Collapse
|
37
|
Der Sarkissian S, Sauvé J, Larose E, Stevens L, Yau T, Prieto I, Basile F, Mansour S, Roy D, Noiseux N. Identification of differential expression phenotypes of CD133 + stem cells in acute and chronic myocardial infarct patients and specific expression pathways underpinning therapeutic responsiveness in regenerative therapy. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.02.022] [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: 10/17/2022]
|
38
|
Justi SA, Cahan S, Stevens L, Monroy C, Lima-Cordón R, Dorn PL. Vectors of diversity: Genome wide diversity across the geographic range of the Chagas disease vector Triatoma dimidiata sensu lato (Hemiptera: Reduviidae). Mol Phylogenet Evol 2018; 120:144-150. [PMID: 29248626 PMCID: PMC5991476 DOI: 10.1016/j.ympev.2017.12.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 11/17/2017] [Accepted: 12/11/2017] [Indexed: 01/01/2023]
Abstract
To date, the phylogeny of Triatoma dimidiata sensu lato (s. l.) (Hemiptera: Reduviidae: Triatominae), the epidemiologically most important Chagas disease vector in Central America and a secondary vector in Mexico and northern South America, has only been investigated by one multi-copy nuclear gene (Internal Transcribed Spacer - 2) and a few mitochondrial genes. We examined 450 specimens sampled across most of its native range from Mexico to Ecuador using reduced representation next-generation sequencing encompassing over 16,000 single nucleotide polymorphisms (SNPs). Using a combined phylogenetic and species delimitation approach we uncovered two distinct species, as well as a well-defined third group that may contain multiple species. The findings are discussed with respect to possible drivers of diversification and the epidemiological importance of the distinct species and groups.
Collapse
Affiliation(s)
- Silvia A Justi
- Department of Biology, University of Vermont, Burlington, VT, United States.
| | - Sara Cahan
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Carlota Monroy
- Biology School, University of San Carlos, Guatemala City, Guatemala
| | - Raquel Lima-Cordón
- Department of Biology, University of Vermont, Burlington, VT, United States
| | - Patricia L Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, LA, United States
| |
Collapse
|
39
|
Javaid M, Ashrawi D, Landgren R, Stevens L, Bello R, Foxhall L, Mims M, Ramondetta L. Human Papillomavirus Vaccine Uptake in Texas Pediatric Care Settings: A Statewide Survey of Healthcare Professionals. J Community Health 2018; 42:58-65. [PMID: 27473752 DOI: 10.1007/s10900-016-0228-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The purpose of this study was to identify barriers to and facilitators of human papillomavirus (HPV) vaccination in children aged 9-17 years across Texas. A literature review informed the development of a web-based survey designed for people whose work involves HPV vaccination in settings serving pediatric patients. The survey was used to examine current HPV vaccine recommendation practices among healthcare providers, barriers to HPV vaccination, reasons for parent/caregiver vaccine refusal, staff and family education practices, utilization of reminder and recall systems and status of vaccine administration (payment, ordering and stocking). 1132 responses were received representing healthcare providers, administrative and managerial staff. Respondents identified perceived barriers to HPV vaccination as parental beliefs about lack of necessity of vaccination prior to sexual debut, parental concerns regarding safety and/or side effects, parental perceptions that their child is at low risk for HPV-related disease, and parental lack of knowledge that the vaccine is a series of three shots. Of responding healthcare providers, 94 % (n = 582) reported they recommend the vaccine for 9-12 year olds; however, same-day acceptance of the vaccine is low with only 5 % (n = 31) of providers reporting the HPV vaccine is "always" accepted the same day the recommendation is made. Healthcare providers and multidisciplinary care teams in pediatric care settings must work to identify gaps between recommendation and uptake to maximize clinical opportunities. Training in methods to communicate an effective HPV recommendation and patient education tailored to address identified barriers may be helpful to reduce missed opportunities and increase on-time HPV vaccinations.
Collapse
Affiliation(s)
- Mehwish Javaid
- Office of Health Policy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dana Ashrawi
- Office of Health Policy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rachel Landgren
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lori Stevens
- Office of Health Policy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rosalind Bello
- Office of Health Policy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lewis Foxhall
- Office of Health Policy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Melissa Mims
- Office of Health Policy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lois Ramondetta
- Department of Gynecologic Oncology and Reproductive Medicine, Unit 1362, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA.
| |
Collapse
|
40
|
Keller JI, Ballif BA, St. Clair RM, Vincent JJ, Monroy MC, Stevens L. Chagas disease vector blood meal sources identified by protein mass spectrometry. PLoS One 2017; 12:e0189647. [PMID: 29232402 PMCID: PMC5726658 DOI: 10.1371/journal.pone.0189647] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/29/2017] [Indexed: 02/08/2023] Open
Abstract
Chagas disease is a complex vector borne parasitic disease involving blood feeding Triatominae (Hemiptera: Reduviidae) insects, also known as kissing bugs, and the vertebrates they feed on. This disease has tremendous impacts on millions of people and is a global health problem. The etiological agent of Chagas disease, Trypanosoma cruzi (Kinetoplastea: Trypanosomatida: Trypanosomatidae), is deposited on the mammalian host in the insect’s feces during a blood meal, and enters the host’s blood stream through mucous membranes or a break in the skin. Identifying the blood meal sources of triatomine vectors is critical in understanding Chagas disease transmission dynamics, can lead to identification of other vertebrates important in the transmission cycle, and aids management decisions. The latter is particularly important as there is little in the way of effective therapeutics for Chagas disease. Several techniques, mostly DNA-based, are available for blood meal identification. However, further methods are needed, particularly when sample conditions lead to low-quality DNA or to assess the risk of human cross-contamination. We demonstrate a proteomics-based approach, using liquid chromatography tandem mass spectrometry (LC-MS/MS) to identify host-specific hemoglobin peptides for blood meal identification in mouse blood control samples and apply LC-MS/MS for the first time to Triatoma dimidiata insect vectors, tracing blood sources to species. In contrast to most proteins, hemoglobin, stabilized by iron, is incredibly stable even being preserved through geologic time. We compared blood stored with and without an anticoagulant and examined field-collected insect specimens stored in suboptimal conditions such as at room temperature for long periods of time. To our knowledge, this is the first study using LC-MS/MS on field-collected arthropod disease vectors to identify blood meal composition, and where blood meal identification was confirmed with more traditional DNA-based methods. We also demonstrate the potential of synthetic peptide standards to estimate relative amounts of hemoglobin acquired when insects feed on multiple blood sources. These LC-MS/MS methods can contribute to developing Ecohealth control strategies for Chagas disease transmission and can be applied to other arthropod disease vectors.
Collapse
Affiliation(s)
- Judith I. Keller
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - Bryan A. Ballif
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
- * E-mail: (LS); (BAB)
| | - Riley M. St. Clair
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - James J. Vincent
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
| | - M. Carlota Monroy
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
- Laboratorio de Entomología Aplicada y Parasitología, Escuela de Biología, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, Vermont, United States of America
- * E-mail: (LS); (BAB)
| |
Collapse
|
41
|
Der Sarkissian S, Aceros H, Borie M, Stevens L, Mansour S, Noiseux N. IDENTIFICATION OF A NOVEL HIGHLY EFFICIENT PHARMACOLOGICAL CANDIDATE FOR USE AS AN INFARCT-SPARING DRUG. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.240] [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: 11/29/2022] Open
|
42
|
Mazine A, Bouhout I, Saydy N, Stevens L, Gagné-Loranger M, Lamarche Y, Bouchard D. RELATIVE ADRENAL INSUFFICIENCY IS ASSOCIATED WITH PROLONGED POSTOPERATIVE HEMODYNAMIC INSTABILITY IN PATIENTS UNDERGOING CARDIAC SURGERY. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.091] [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: 10/18/2022] Open
|
43
|
Mazine A, Ghoneim A, Stevens L, El Hamamsy I, Harrington A, Losenno K, Hassan A, Peterson M, Chu M. THE LEARNING CURVE OF THORACIC AORTIC SURGERY WITH HYPOTHERMIC CIRCULATORY ARREST: A CUMULATIVE SUM ANALYSIS OF 348 OPERATIONS FROM THREE EARLY-CAREER SURGEONS. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.214] [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: 10/18/2022] Open
|
44
|
Der Sarkissian S, Sauvé J, Larose E, Aceros H, Mansour S, Stevens L, Prieto I, Basile F, Roy D, Noiseux N. RNA-SEQ DATA ANALYSIS IDENTIFIES STEM CELL TRANSCRIPTOMIC SIGNATURES UNDERPINNING THE THERAPEUTIC EFFECTIVENESS OF PATIENT CELLS IN THE IMPACT-CABG TRIAL. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.056] [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: 10/18/2022] Open
|
45
|
Dorn PL, McClure AG, Gallaspy MD, Waleckx E, Woods AS, Monroy MC, Stevens L. The diversity of the Chagas parasite, Trypanosoma cruzi, infecting the main Central American vector, Triatoma dimidiata, from Mexico to Colombia. PLoS Negl Trop Dis 2017; 11:e0005878. [PMID: 28957315 PMCID: PMC5619707 DOI: 10.1371/journal.pntd.0005878] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 08/17/2017] [Indexed: 01/02/2023] Open
Abstract
Little is known about the strains of Trypanosoma cruzi circulating in Central America and specifically in the most important vector in this region, Triatoma dimidiata. Approximately six million people are infected with T. cruzi, the causative agent of Chagas disease, which has the greatest negative economic impact and is responsible for ~12,000 deaths annually in Latin America. By international consensus, strains of T. cruzi are divided into six monophyletic clades called discrete typing units (DTUs TcI-VI) and a seventh DTU first identified in bats called TcBat. TcI shows the greatest geographic range and diversity. Identifying strains present and diversity within these strains is important as different strains and their genotypes may cause different pathologies and may circulate in different localities and transmission cycles, thus impacting control efforts, treatment and vaccine development. To determine parasite strains present in T. dimidiata across its geographic range from Mexico to Colombia, we isolated abdominal DNA from T. dimidiata and determined which specimens were infected with T. cruzi by PCR. Strains from infected insects were determined by comparing the sequence of the 18S rDNA and the spliced-leader intergenic region to typed strains in GenBank. Two DTUs were found: 94% of infected T. dimidiata contained TcI and 6% contained TcIV. TcI exhibited high genetic diversity. Geographic structure of TcI haplotypes was evident by Principal Component and Median-Joining Network analyses as well as a significant result in the Mantel test, indicating isolation by distance. There was little evidence of association with TcI haplotypes and host/vector or ecotope. This study provides new information about the strains circulating in the most important Chagas vector in Central America and reveals considerable variability within TcI as well as geographic structuring at this large geographic scale. The lack of association with particular vectors/hosts or ecotopes suggests the parasites are moving among vectors/hosts and ecotopes therefore a comprehensive approach, such as the Ecohealth approach that makes houses refractory to the vectors will be needed to successfully halt transmission of Chagas disease.
Collapse
Affiliation(s)
- Patricia L. Dorn
- Loyola University New Orleans, New Orleans, Louisiana, United States of America
| | - Annie G. McClure
- Loyola University New Orleans, New Orleans, Louisiana, United States of America
| | - Meghan D. Gallaspy
- Loyola University New Orleans, New Orleans, Louisiana, United States of America
| | | | - Adrienne S. Woods
- Loyola University New Orleans, New Orleans, Louisiana, United States of America
| | | | - Lori Stevens
- University of Vermont, Burlington, Vermont, United States of America
| |
Collapse
|
46
|
Trotman J, Fosså A, Federico M, Stevens L, Kirkwood A, Clifton-Hadley L, Patrick P, Berkahn L, D'Amore F, Enblad G, Luminari S, Radford J, Barrington S, Johnson P. RESPONSE-ADJUSTED THERAPY FOR ADVANCED HODGKIN LYMPHOMA (RATHL) TRIAL: LONGER FOLLOW UP CONFIRMS EFFICACY OF DE-ESCALATION AFTER a NEGATIVE INTERIM PET SCAN (CRUK/07/033). Hematol Oncol 2017. [DOI: 10.1002/hon.2437_53] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J. Trotman
- Haematology, Concord Repatriation General Hospital; University of Sydney; Concord Australia
| | - A. Fosså
- Medical Oncology; Oslo University Hospital; Oslo Norway
| | - M. Federico
- Diagnostic Clinical and Public Health Medicine; University of Modena and Reggio Emilia; Modena Missouri Italy
| | - L. Stevens
- Cancer Trials Centre; Cancer Research UK and University College London; London UK
| | - A. Kirkwood
- Cancer Trials Centre; Cancer Research UK and University College London; London UK
| | - L. Clifton-Hadley
- Cancer Trials Centre; Cancer Research UK and University College London; London UK
| | - P. Patrick
- Cancer Trials Centre; Cancer Research UK and University College London; London UK
| | - L. Berkahn
- Haematology; Auckland City Hospital; Auckland New Zealand
| | - F. D'Amore
- Haematology; Aarhus University Hospital; Aarhus C Denmark
| | - G. Enblad
- Immunology, Genetics and Pathology; Uppsala University; Uppsala Sweden
| | - S. Luminari
- Arcispedale Santa Maria Nuova; Istituti di Ricovero e Cura a Carattere Scientifico; Reggio Emilia Italy
| | - J. Radford
- Medical Oncology; Christie Hospital; Manchester UK
| | - S.F. Barrington
- The PET Imaging Centre, King's College London; King's Health Partners, St. Thomas' Hospital; London UK
| | - P. Johnson
- Cancer Research UK Centre; University of Southampton; Southampton UK
| |
Collapse
|
47
|
Pike L, Kirkwood A, Patrick P, Radford J, Burton C, Stevens L, Clifton-Hadley L, Johnson P, Barrington S. CAN BASELINE PET-CT FEATURES PREDICT OUTCOMES IN ADVANCED HODGKIN LYMPHOMA? A PROSPECTIVE EVALUATION OF UK PATIENTS IN THE RATHL TRIAL (CRUK/07/033). Hematol Oncol 2017. [DOI: 10.1002/hon.2437_18] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L.C. Pike
- KCL and Guys'& St Thomas' PET Centre; Division of Imaging and Biomedical Engineering, Kings College London; London UK
| | - A.A. Kirkwood
- Cancer Research UK and UCL Cancer Trials Centre; University College London; London UK
| | - P. Patrick
- Cancer Research UK and UCL Cancer Trials Centre; University College London; London UK
| | - J. Radford
- Division of Molecular & Clinical Cancer Sciences; University of Manchester and The Christie NHS Foundation Trust; Manchester UK
| | - C. Burton
- Haematological Malignancy Diagnostic Service; University of Leeds; Leeds
| | - L. Stevens
- Cancer Research UK and UCL Cancer Trials Centre; University College London; London UK
| | - L. Clifton-Hadley
- Cancer Research UK and UCL Cancer Trials Centre; University College London; London UK
| | - P.W. Johnson
- University of Southampton; Cancer Research UK Centre; Southampton UK
| | - S.F. Barrington
- KCL and Guys'& St Thomas' PET Centre; Division of Imaging and Biomedical Engineering, Kings College London; London UK
| |
Collapse
|
48
|
Preston A, Kirkwood A, Federico M, Trotman J, Fossa A, Stevens L, Clifton-Hadley L, Patrick P, Berkahn L, d'Amore F, Enblad G, Luminari S, Radford J, Johnson P. OUTCOMES OF TREATMENT FOR OBESE PATIENTS WITH ADVANCED HODGKIN LYMPHOMA IN THE RATHL TRIAL (CRUK/07/033). Hematol Oncol 2017. [DOI: 10.1002/hon.2438_31] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. Preston
- Pharmacy; University Hospitals Bristol; Bristol UK
| | - A. Kirkwood
- Cancer Research UK & UCL Cancer Trials Centre; University College London; London UK
| | - M. Federico
- Diagnostic Clinical and Public Health Medicine; University of Modena and Reggio Emilia; Modena Italy
| | - J. Trotman
- Haematology, Concord Repatriation General Hospital; University of Sydney; Concord Australia
| | - A. Fossa
- Medical Oncology; Oslo University Hospital; Oslo Norway
| | - L. Stevens
- Cancer Research UK & UCL Cancer Trials Centre; University College London; London UK
| | - L. Clifton-Hadley
- Cancer Research UK & UCL Cancer Trials Centre; University College London; London UK
| | - P. Patrick
- Cancer Research UK & UCL Cancer Trials Centre; University College London; London UK
| | - L. Berkahn
- Haematology; Auckland City Hospital; Auckland New Zealand
| | - F. d'Amore
- Haematology; Aarhus University Hospital; Aarhus C Denmark
| | - G. Enblad
- Immunology, Genetics and Pathology; Uppsala University; Uppsala Sweden
| | - S. Luminari
- Arcispedale Santa Maria Nuova; Istituti di Ricovero e Cura a Carattere Scientifico; Reggio Emilia Italy
| | - J. Radford
- Medical Oncology; Christie Hospital; Manchester UK
| | - P.W. Johnson
- Cancer Research UK Centre; University of Southampton; Southampton UK
| |
Collapse
|
49
|
Stevens L, Yan G, Pray LA. CONSEQUENCES OF INBREEDING ON INVERTEBRATE HOST SUSCEPTIBILITY TO PARASITIC INFECTION. Evolution 2017; 51:2032-2039. [DOI: 10.1111/j.1558-5646.1997.tb05126.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/1997] [Accepted: 08/11/1997] [Indexed: 12/01/2022]
Affiliation(s)
- Lori Stevens
- Department of Biology University of Vermont Marsh Life Science Building Burlington Vermont 05405‐0086
| | - Guiyun Yan
- Department of Biology University of Vermont Marsh Life Science Building Burlington Vermont 05405‐0086
| | - Leslie A. Pray
- Department of Biology University of Vermont Marsh Life Science Building Burlington Vermont 05405‐0086
| |
Collapse
|
50
|
Wade MJ, Shuster SM, Stevens L. INBREEDING: ITS EFFECT ON RESPONSE TO SELECTION FOR PUPAL WEIGHT AND THE HERITABLE VARIANCE IN FITNESS IN THE FLOUR BEETLE, TRIBOLIUM CASTANEUM. Evolution 2017; 50:723-733. [DOI: 10.1111/j.1558-5646.1996.tb03882.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/1993] [Accepted: 02/08/1995] [Indexed: 11/30/2022]
Affiliation(s)
- Michael J. Wade
- Department of Ecology and Evolution; The University of Chicago; Chicago Illinois 60637
| | - Stephen M. Shuster
- Department of Biological Sciences; Northern Arizona University; Flagstaff Arizona 86011-5640
| | - Lori Stevens
- Department of Zoology; University of Vermont; Burlington Vermont 05405
| |
Collapse
|