Browsing Investigación by Issue Date
Now showing items 1-20 of 227
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Fungal endophytes limit pathogen damage in a tropical tree
(2003-10-23)Every plant species examined to date harbors endophytic fungi within its asymptomatic aerial tissues, such that endophytes represent a ubiquitous, yet cryptic, component of terrestrial plant communities. Fungal endophytes ... -
I. eaf Litter and Leaf Age as Factors Affecting the Assemblage of Endophytes Associated with
(2006-08-01)Particular importance has been given to the potential effect of forest canopy on enhancing the rate of initial endophytic fungi colonization of seedlings. Here we compare the rate of endophyte accumulation when endophyte-free ... -
ECOLOGICAL IMPLICATIONS OF ANTI-PATHOGEN EFFECTS OF TROPICAL FUNGAL ENDOPHYTES AND MYCORRHIZAE
(2007-03-01)We discuss studies of foliar endophytic fungi (FEE) and arbuscular mycorrhizal fungi (AMF) associated with Theobroma cacao in Panama. Direct, experimentally controlled comparisons of endophyte free (E—) and endophyte ... -
Leaf-inhabiting genera of the Gnomoniaceae, Diaporthales
(Studies in Mycology, 2008-01-01)The Gnomoniaceae are characterised by ascomata that are generally immersed, solitary, without a stroma, or aggregated with a rudimentary stroma, in herbaceous plant material especially in leaves, twigs or stems, ... -
Species Composition and Distribution of Adult Anopheles (Diptera: Culicidae) in Panama
(2008-09-01)Anopheles (Diptera: Culicidae) species composition and distribution were studied using human landing catch data over a 35-yr period in Panama. Mosquitoes were collected from 77 sites during 228 Þeld trips carried out by ... -
Short Report: Anopheles darlingi (Diptera: Culicidae) in Panama
(2009-02-11)We report Anopheles darlingi in Darien Province in eastern Panama. Polymerase chain reaction–restriction fragment length polymorphism profiles of the single copy nuclear white gene and sequence comparisons confirmed the ... -
Evidence for Pleistocene Population Divergence and Expansion of Anopheles albimanus in Southern Central America
(2010-01-05)The micro-geographic structure of Anopheles albimanus was studied in southern Central America using partial sequences of the mtDNA cytochrome oxidase subunit I gene (COI). Analysis of molecular variance supported significant ... -
In vitro and in vivo experimental models for drug screening and development for Chagas disease
(2010-03-02)Chagas disease, a neglected illness, affects nearly 12-14 million people in endemic areas of Latin America. Although the occurrence of acute cases sharply has declined due to Southern Cone Initiative efforts to control ... -
Regulating in vivo calcification of alginate microbeads
(2010-04-02)Alginate calcification has been previously reported clinically and during animal implantation; however no study has investigated the mechanism, extensively characterized the mineral, or evaluated multiple methods to regulate ... -
Complement Receptor 1 Is a Sialic Acid-Independent Erythrocyte Receptor of Plasmodium falciparum
(2010-06-17)Plasmodium falciparum is a highly lethal malaria parasite of humans. A major portion of its life cycle is dedicated to invading and multiplying inside erythrocytes. The molecular mechanisms of erythrocyte invasion are ... -
Anti-lipid antibody in M. tuberculosis infection--basis for a new biomarker-based test to monitor treatment response
(2011-01-01)Tuberculosis (TB) faces difficult challenges for its treatment and control. Both the diagnosis of TB and Mycobacterium tuberculosis (M. tuberculosis) drug susceptibility testing take weeks and clinicians often do not know ... -
The effects of combined micron-/submicron-scale surface roughness and nanoscale features on cell proliferation and differentiation
(2011-02-08)Titanium (Ti) osseointegration is critical for the success of dental and orthopedic implants. Previous studies have shown that surface roughness at the micro- and submicro-scales promotes osseointegration by enhancing ... -
New species, phylogeny, host-associations and geographic distribution of genus Cryptosporella (Gnomoniaceae, Diaporthales)
(2011-03-01)The phylogeny of Cryptosporella is revised to include recently discovered species. Eight species new to science are described and two new combinations are proposed, raising the total number of species accepted in Cryptosporella ... -
Screening and evaluation of antiparasitic and in vitro anticancer activities of Panamanian endophytic fungi
(2011-03-30)Many compounds produced by fungi have relevant pharmaceutical applications. The purpose of this study was to collect and isolate endophytic fungi from different regions of Panama and then to test their potential therapeutic ... -
Automated Synchronization of P. falciparum using a Temperature Cycling Incubator
(2011-04)As malaria keeps affecting millions of lives every year, research based in culture of Plasmodium falciparum in vitro needs to be efficient and accurate. The development of better techniques and methodologies for the growth ... -
Amplified fragment length polymorphisms reveals high intraspecific variability in field isolates of Leishmania panamensis
(2011-04-01)Leishmania parasites cause leishmaniasis, a potentially deadly re-emergent disease that affects millions throughout the world. In Panama, the disease is showing an increasing trend, with estimates of thousands of new cases ... -
Cytotoxic Veraguamides, Alkynyl Bromide-containing cyclic Depsipeptides from the marine Cyanobacterium cf. Osciallatoria margaritifera. EmilyCytotoxic Veraguamides, Alkynyl Bromide-containing cyclic Depsipeptides from the marine Cyanobacterium cf. Osciallatoria margaritifera.
(2011-04-13)A family of cancer cell cytotoxic cyclodepsipeptides, veraguamides A-C( 1-3) and H-L( 4-8), were isolated from a collection of cf. Oscillatoria margaritifera obtained from the Coiba National Park, Panama, as part of the ... -
Comparison of the in vitro invasive capabilities of Plasmodium falciparum schizonts isolated by Percoll gradient or using magnetic based separation
(2011-04-18)Background: Percoll gradient centrifugation is often used for synchronization, enrichment, or isolation of a particular stage of Plasmodium falciparum. However, Percoll, a hyperosmotic agent, may have harmful effects on ... -
Plasmodium falciparum field isolates use complement receptor 1 (CR1) as a receptor for invasion of erythrocytes
(2011-05-18)AmajorityofPlasmodiumfalciparumstrainsinvadeerythrocytesthroughinteractionswithsialicacid(SA) on glycophorins. However, we recently reported that complement receptor 1 (CR1) is a SA-independent invasionreceptorofmanylabo ... -
Occultocarpon, a new monotypic genus of Gnomoniaceae on Alnus nepalensis from China
(2011-06-04)Microfungi in the Gnomoniaceae (Diaporthales, Ascomycetes) comprise species commonly reported as pathogens and endophytes on trees and herbaceous hosts primarily from temperate forests of North America, Europe, and Japan. ...