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Yadvinder Malhi, Cécile A J Girardin, Gregory R Goldsmith, Christopher E Doughty, Norma Salinas, Daniel B Metcalfe, Walter Huaraca Huasco, Javier E Silva-Espejo, Jhon Del Aguilla-Pasquell, Filio Farfán Amézquita, Luiz E O C Aragão, Rossella Guerrieri, Françoise Yoko Ishida, Nur H A Bahar, William Farfan-Rios, Oliver L Phillips, Patrick Meir, Miles Silman
Why do forest productivity and biomass decline with elevation? To address this question, research to date generally has focused on correlative approaches describing changes in woody growth and biomass with elevation. We present a novel, mechanistic approach to this question by quantifying the autotrophic carbon budget in 16 forest plots along a 3300 m elevation transect in Peru. Low growth rates at high elevations appear primarily driven by low gross primary productivity (GPP), with little shift in either carbon use efficiency (CUE) or allocation of net primary productivity (NPP) between wood, fine roots and canopy...
October 21, 2016: New Phytologist
Roger R Fan, Leigh M Howard, Marie R Griffin, Kathryn M Edwards, Yuwei Zhu, John V Williams, Jorge E Vidal, Keith P Klugman, Ana I Gil, Claudio F Lanata, Carlos G Grijalva
We examined nasopharyngeal pneumococcal colonization density patterns surrounding acute respiratory illnesses (ARI) in young children in Peru. Pneumococcal densities were dynamic, gradually increasing leading up to an ARI, peaking during the ARI, and decreasing after the ARI. Rhinovirus co-infection was associated with higher pneumococcal densities.
November 2016: Emerging Infectious Diseases
Vincent Duron, Daniel DeUgarte, David Bliss, Ernesto Salazar, Martin Casapia, Henri Ford, Jeffrey Upperman
Background: In Peru, 11% of deaths are due to trauma. Iquitos is a large underserved Peruvian city isolated from central resources by its geography. Our objective was to implement a locally driven trauma registry to sustainably improve trauma healthcare in this region. Methods: All trauma patients presenting to the main regional referral hospital were included in the trauma registry. A pilot study retrospectively analyzed data from the first two months after implementation. Results: From March to April 2013, 572 trauma patients were entered into the database...
2016: Health Promotion Perspectives
Alain de Chambrier, Carlos Daniel Pinacho-Pinacho, Jesus Servando Hernà Ndez-Orts, Tomà ŠScholz
Cichlidocestus n. gen. is proposed to accommodate 2 new species of proteocephalidean cestodes, Cichlidocestus gillesi n. sp. from Cichlasoma amazonarum in Peru Amazonia (type species) and Cichlidocestus janikae n. sp. from Hypsophrys nicaraguensis (all Perciformes: Cichlidae) in Costa Rica. The new genus is unique among all but 1 proteocephalidean genera in the position of the ovary that occupies the middle and posterior thirds of proglottids (versus the ovary in the posterior third of proglottids near their posterior margin in all but 1 remaining taxa)...
October 20, 2016: Journal of Parasitology
Paul E George, Julio Vidal, Patricia J Garcia
BACKGROUND: Peru experienced a crisis in its blood collection and supply system in the mid-2000s, as contaminated blood led to several transfusion-transmitted infections (TTI), occurring in the backdrop of extremely low voluntary donation rates and a national blood supply shortage. Thus, the Peruvian Ministry of Health (MINSA) implemented a national investigation on the safety and quality of the Peruvian blood collection/transfusion network. METHODS: Every Peruvian blood bank was evaluated by MINSA from 2007-2008...
May 2016: J Epidemiol Public Health Rev
Irma Elizabeth Huayanay-Espinoza, Felix Guerra-Castañon, María Lazo-Porras, Ana Castaneda-Guarderas, Nimmy Josephine Thomas, Ana-Lucia Garcia-Guarniz, Augusto A Valdivia-Bustamante, Germán Málaga
OBJECTIVE: The objective of this study was to assess patients' achievement of ADA (American Diabetes Association) guideline recommendations for glycosylated hemoglobin, lipid profile, and blood pressure in a type 2 diabetes mellitus (T2DM) outpatient clinic in a low-middle income country (LMIC) setting. METHODS: This is a descriptive cross-sectional study with 123 ambulatory T2DM patients who are being treated at a public hospital in Lima, Peru. Data was gathered via standardized interviews, clinical surveys, and anthropomorphic measurements for each patient...
2016: PeerJ
Pool Aguilar-León, Fiorela Solano-Zapata
No abstract text is available yet for this article.
October 10, 2016: Cadernos de Saúde Pública
Joshua D Billings, Dvora L Joseph Davey, Kelika A Konda, Claire C Bristow, Jeremy Chow, Jeffrey D Klausner, Carlos F Cáceres
The aim of the study was to identify factors associated with undiagnosed human immunodeficiency virus (HIV) infection among men who have sex with men (MSM) and male-to-female transgender women in Lima, Peru.We analyzed characteristics of 378 MSM and transgender women recruited from 2 sexually transmitted infection (STI) clinics in Lima, Peru. Descriptive analyses compared: (A) HIV-uninfected, (B) previously undiagnosed HIV-infected, and (C) previously diagnosed HIV-infected participants. Multivariable logistic regression models identified: (1) correlates of previously undiagnosed HIV-infection among participants thought to be HIV-uninfected (B vs A); and (2) correlates of previously undiagnosed HIV-infection among HIV-infected participants (B vs C)...
October 2016: Medicine (Baltimore)
Katherine Wingert Pizarro, Inés V Bustamante, Pamela J Surkan
BACKGROUND: Family relationships are widely recognized as playing a role in adolescent alcohol use. Although family relationships and parenting vary by culture, limited research has explored these relationships in Latin America. OBJECTIVES: We sought to determine which family factors are associated with adolescent alcohol use in Callao, Peru. METHODS: Data come from a cross-sectional survey conducted in a public secondary school in Callao, Peru in 2007...
October 18, 2016: Substance Use & Misuse
Zully M Puyén, Joshi Acosta, George Obregon, Edson Pacheco, Hada Ramirez, Alberto Mendoza, Diana Marín, Anthony D Harries
Objective To determine the use and performance of a line probe assay (LPA) compared with conventional culture and drug sensitivity testing (CDST) in patients registered with tuberculosis (TB) under routine program conditions in Peru in 2011-2013. Methods This was a descriptive, operational research, cross-sectional study of sputum specimens from patients with smear-positive pulmonary TB and mycobacterial cultures from patients with smear-negative or positive TB. Drug resistance to rifampicin and/or isoniazid detected by LPA was compared to CDST...
January 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
Rafael Hernandez-Hernandez
For the last three-decade cardiovascular disease have been the principal causes of death in most Latin American countries. Their importance has been rising, as in developed countries; such as United State, the mortality rate for CV disease declined in LA rises as in the other developing countries.Cardiovascular risk factors epidemiological studies from LA tend to be limited, and with restrictions on the methodology for sampling and interpretation of results; making most of the studies little comparable each other;on the other hand, population characteristics from country to country and inside each country are so different in ethnicity, habits, socio-economic status which make difficult to integrate and compare results as a whole...
September 2016: Journal of Hypertension
Noriyoshi Tsujino, Yu Nishihara, Daisuke Yamazaki, Yusuke Seto, Yuji Higo, Eiichi Takahashi
Seismic shear wave anisotropy is observed in Earth's uppermost lower mantle around several subducted slabs. The anisotropy caused by the deformation-induced crystallographic preferred orientation (CPO) of bridgmanite (perovskite-structured (Mg,Fe)SiO3) is the most plausible explanation for these seismic observations. However, the rheological properties of bridgmanite are largely unknown. Uniaxial deformation experiments have been carried out to determine the deformation texture of bridgmanite, but the dominant slip system (the slip direction and plane) has not been determined...
October 17, 2016: Nature
Nancy Roxana Machaca Quea, Fabian Emura, Fernando Barreda Bolaños, Yuliana Salvador Arias, Fernando Antonio Arévalo Suárez, Alejandro Piscoya Rivera
Background and study aims: In the Western world, gastric cancer (GC) usually presents at an advanced stage, carrying a high mortality rate. Studies have reported that 14 % to 26 % of GCs are missed at endoscopy up to 3 years before diagnosis. Systematic Alphanumeric Coded Endoscopy (SACE) has been proposed to improve quality of esophagogastroduodenoscopy (EGD) by facilitating a complete examination of the upper gastrointestinal tract. This prospective cross-sectional study was designed to determine the frequency of gastric intraepithelial neoplasia (GIN) by using the SACE approach in cohort of patients from low socioeconomic level...
October 2016: Endoscopy International Open
Fátima Evelin Acuña Ortiz, Victoria Alejandra Capitán de la Cruz, Franco Ernesto León Jiménez
OBJECTIVE: Knowledge about fibromyalgia in general practitioners in the province of Chiclayo, Peru, 2016. MATERIALS AND METHODS: Cross sectional descriptive study. Non-probability sampling, census type. In all, 145 physicians were evaluated through a questionnaire of 14 questions, validated by experts and a pilot. The analysis was performed using STATA v. 13. RESULTS: Accuracy in questions involving diagnosis was 41.1% and in questions about treatment: 65%; 75...
October 11, 2016: Reumatología Clinica
Martin Perez-Santos, Maricruz Anaya-Ruiz, Cindy Bandala
BACKGROUND: Data mining publications and patent data can provide decision support for scientists, inventors and industry in the field of cancer research. OBJECTIVE: The main objective of this article it to identify trends of research and patent generation productivity originating from Latin American countries in the field of cancer. METHOD: Publications were collected from the Scopus, Web of Science, PubMed database; and patents were collected from Latipat Espacenet databases...
October 13, 2016: Recent Patents on Anti-cancer Drug Discovery
Lauren Peruffo, Janice D Boyd, Sharman Hoppes, Donald J Brightsmith
Blood biochemical values are useful as indicators of disease in veterinary practice and for health assessments of free-ranging animal populations. We analyzed blood biochemical values for free-living nestling and adult scarlet macaws ( Ara macao macao) in southeastern Peru with an Abaxis VetScan VS2 portable analyzer with Avian/Reptilian Profile Plus rotors. The resulting data were used to create provisional age-independent reference intervals for this instrument for wild scarlet macaw nestlings, calculate blood biochemical ranges for this instrument for wild adults, and examine age-related trends in nestlings...
September 2016: Journal of Avian Medicine and Surgery
Gwenyth O Lee, Maribel Paredes Olortegui, Gabriela Salmón-Mulanovich, Pablo Peñataro Yori, Margaret Kosek
BACKGROUND: Informal settlements are common throughout the developing world. In Peru, land occupations, commonly "invasions" in Spanish, are a means by which the extremely poor attempt to obtain access to land. Here, we examine difference in child health between two communities in the Peruvian Amazon, one well-established and one newly formed by 'invasion', as captured incidentally by a prospective epidemiological cohort study. METHODS: Between 2002 and 2006 a study designed to describe the epidemiology of pediatric enteric infections and child growth in a community-based setting enrolled 442 children in Santa Clara de Nanay, a community adjacent to the city of Iquitos, in Loreto, Peru...
October 12, 2016: BMC International Health and Human Rights
Gladys Carrion, Jose L Huaman, Maria Silva, Julia S Ampuero, Irmia Paz, Victor R Ocaña, V Alberto Laguna-Torres, Robert D Hontz
OBJECTIVES: To determine the molecular epidemiology of seven CVA16 strains previously reported by our team. METHODS: Full-length VP1 and VP4 sequences were obtained and phylogenetic analyses were performed. RESULTS: Six strains were classified as genotype C. Moreover, we found one divergent strain not clustered in any of the three currently reported genotypes. CONCLUSION: This is the first report of CVA16 in Peru and provides valuable baseline data about its potential distribution in South America, as well as evidence of a potential divergent genotype that has never before been reported...
October 6, 2016: International Journal of Infectious Diseases: IJID
Theodore E Nash, Javier A Bustos, Hector H Garcia
Taenia solium (the pork tapeworm) is present in most developing countries, where it is a frequent cause of seizures and other neurological disease. Parasitic larvae invade the human brain, establish, and eventually resolve, leaving a calcified scar. While these lesions are common in endemic regions, and most of these are clinically silent, a proportion of individuals with calcified cysticerci develop seizures from these lesions, and 30-65% of these cases are associated with perilesional edema (PE), likely due to host inflammation...
October 3, 2016: Trends in Parasitology
Trinh Ngoc Ai, Aung Htay Naing, Muthukrishnan Arun, Sun-Hyung Lim, Chang Kil Kim
The effects of three different sucrose concentrations on plant growth and anthocyanin accumulation were examined in non-transgenic (NT) and transgenic (T2) specimens of the Petunia hybrida cultivar 'Mirage rose' that carried the anthocyanin regulatory transcription factors B-Peru+mPAP1 or RsMYB1. Anthocyanin accumulation was not observed in NT plants in any treatments, whereas a range of anthocyanin accumulation was observed in transgenic plants. The anthocyanin content detected in transgenic plants expressing the anthocyanin regulatory transcription factors (B-Peru+mPAP1 or RsMYB1) was higher than that in NT plants...
November 2016: Plant Science: An International Journal of Experimental Plant Biology
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