325 research outputs found
In Memoriam: From cotton farming to the Congressional Gold Medal: the career and legacy of Ernest James Harris (1928-2018)
Rearing Fopius arisanus (Sonan) (Hymenoptera: Braconidae) on Mediterranean Fruit Fly and its Introduction into Senegal against Oriental Fruit Fly (Diptera: Tephritidae)
Oriental fruit fly, Bactrocera dorsalis (Hendel) (aka B. invadens Drew, Tsuruta, and White), a serious pest of tropical fruits, particularly mango, was first reported in Africa in 2003 and quickly spread to over 27 countries. In the parasitoid introduction reported herein, Fopius arisanus (Sonan) was reared on and shipped to Senegal inside pupae of Mediterranean fruit fly, Ceratitis capitata (Wiedemann), which is endemic to Africa, rather than its usual B. dorsalis host, because B. invadens was still treated as a separate species from B. dorsalis in 2012, and to avoid the risk of fly escape from unparasitized pupae in the shipment. From 2013 to 2014, 14 shipments, totaling approximately 246,000 F. arisanus, were sent from Hilo, HI, USA to Dakar, Senegal and released in 12 mango and orange orchards in the Casamance region of southern Senegal. Parasitoids were emerged from pupae, processed and small scale rearing done on locally available B. dorsalis for subsequent releases. Limited numbers of F. arisanus had also been released in 2012 from cultures maintained in Cotonou, Benin, by IITA under the PADERCA project, but parasitism was relatively low. During 2013 and 2014 parasitism rate in mango fruits has steadily increased to 20â25%. Based on this technique, a similar approach has been used for introduction of F. arisanus against carambola fruit fly, Bactrocera carambolae Drew & Hancock, into Brazil
Effectiveness of GF-120 NF Naturalyte Fruit Fly Bait Spray against Different Ages of Melon Fly (Diptera: Tephritidae) Females When Applied to Border Crops of Various Widths
GF-120 NF Naturalyte Fruit Fly Bait was evaluated for its effectiveness to prevent melon fly, Bactrocera cucurbitae (Coquillett), females of various ages from ovipositing in cucumber patches with border crops of different widths. Cohorts of color-marked, protein-fed females, eclosed after 1, 2, or 4 weeks, were released from sites outside sorghum, (Sudax bicolor x S. bicolor var. sudanense) borders 1, 2, or 4 rows deep (30, 90, and 135 cm in width, respectively). Capture rates of female B. cucurbitae
were higher for 2- and 4-week-old than for 1-week-old females. Borders sprayed with GF-120 NF Naturalyte Fruit Fly Bait were effective at preventing released sexually-
mature 4-wk-old females from reaching the cucumber patches only when in association with the widest border (135 cm) treatment. Our findings suggest that for maximum effectiveness against host-seeking female B. cucurbitae, GF-120 NF Naturalyte Fruit Fly Bait should be applied to broader swaths of sorghum planted as a border crop
Comparison of Rain-Fast Bait Stations Versus Foliar Bait Sprays for Control of Oriental Fruit Fly, Bactrocera dorsalis, in Papaya Orchards in Hawaii
Bait stations represent an environmentally friendly attract-and-kill approach to fruit fly population suppression. Recently a novel, visually attractive, rain-fast bait station was developed in Hawaii for potential use against multiple species of pestiferous fruit flies. Here, we compared the efficacy of GF-120 NF Naturalyte Fruit Fly Bait applied either as foliar sprays or onto bait stations in reducing female oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), population density and level of fruit infestation in commercial papaya orchards in Hawaii. Trapping and infestation data were used as indicators of the effectiveness of the two bait application methods. For the first 10 weeks of the study, captures of female B. dorsalis in monitoring traps were significantly greater in control plots than in plots treated with foliar sprays or bait stations. Six weeks after the first bait spray, incidence of infestation (i.e. number of fruit with one or more B. dorsalis larvae) of quarter to half-ripe papaya fruit was reduced by 71.4% and 63.1% for plots with bait stations and foliar sprays, respectively, as compared to control plots. Twelve weeks after first spray, incidence of infestation was reduced by only 54.5% and 45.4% for plots with bait stations and foliar sprays, respectively, as compared to control plots. About 42% less GF-120 was used in orchard plots with bait stations compared to those subject to foliar sprays. The impact of field sanitation on the outcome is also discussed. The results indicate that bait stations can provide a simple, efficient, and economical method of applying insecticidal baits to control fruit flies and a safer alternative to foliar sprays
Area-Wide Suppression of the Mediterranean Fruit Fly, Ceratitis capitata, and the Oriental Fruit Fly, Bactrocera dorsalis, in Kamuela, Hawaii
The United States Department of Agriculture's Agricultural Research Service initiated an area-wide fruit fly management program in Hawaii in 2000. The first demonstration site was established in Kamuela, Hawaii, USA. This paper documents suppression of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), and the oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), in a 40 km2 area containing urban, rural and agricultural zones during a 6 year period. The suppression techniques included sanitation, GF-120 NF Naturalyte Fruit Fly Bait sprays, male annihilation, BiolureÂź traps, and parasitoids against C. capitata and B. dorsalis. In addition, small numbers of sterile males were released against B. dorsalis. Substantial reductions in fruit infestation levels were achieved for both species (90.7 and 60.7% for C. capitata and B. dorsalis, respectively) throughout the treatment period. Fruit fly captures in the 40 km2 treatment area were significantly lower during the 6 year period than those recorded in three non-treated areas. The strategy of combining suppression techniques in an area-wide approach is discussed
Angioma esplénico de células litorales
A 62-year-old man with a medical history of a painful abdominal mass in left upper quadrant and general symptoms, who was classified initially as an unresectable sarcoma. He received chemotherapy and radiotherapy with no response, so he underwent a new surgery, finding a heterogeneous tumor with immunohistochemical consistent with littoral cell angioma. Littoral cell angioma (LCA) is a rare splenic lesion that presents general symptoms, so there are not many reports, which requires surgical management. Is usually an asymptomatic neoplasm of incidental finding, affecting both sexes equally, whose diagnosis is histological and immunohistochemical with a good prognosis always after a surgical approach.Presentamos el caso de un paciente varĂłn de 62 años con masa dolorosa en hipocondrio izquierdo catalogado inicialmente como sarcoma irresecable, recibiĂł quimioterapia y radioterapia sin respuesta, motivo por el cual se reintervino quirĂșrgicamente hallĂĄndose un tumor dependiente de bazo heterogĂ©neo con perfil inmunohistoquĂmico de angioma de cĂ©lulas litorales. El angioma de cĂ©lulas litorales (ACL) es una lesiĂłn esplĂ©nica poco frecuente que se presenta asociado a sĂntomas genĂ©ricos como astenia, dolor regional y baja de peso, que requiere como manejo principal un abordaje quirĂșrgico. Suele ser una neoplasia asintomĂĄtica de hallazgo incidental, afecta a ambos sexos por igual, cuyo diagnĂłstico es bĂĄsicamente histolĂłgico e inmunohistoquĂmico con buen pronĂłstico luego de un abordaje quirĂșrgico inicial
Assessment of Attractiveness of Plants as Roosting Sites for the Melon Fly, Bactrocera cucurbitae, and Oriental Fruit Fly, Bactrocera dorsalis
The use of toxic protein bait sprays to suppress melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae), populations typically involves application to vegetation bordering agricultural host areas where the adults seek shelter (âroostâ). Although bait spray applications for suppression of oriental fruit fly, Bactrocera dorsalis (Hendel), populations have traditionally been applied to the host crop, rather than to crop borders, roosting by oriental fruit flies in borders of some crop species, such as papaya, Carica papaya L. (Brassicales: Caricaceae), suggests that bait spray applications to crop borders could also help in suppression of B. dorsalis populations. In order to develop improved recommendations for application of bait sprays to border plants for suppression of melon fly and oriental fruit fly populations, the relative attractiveness of a range of plant species, in a vegetative (non-flowering) stage, was tested to wild melon fly and oriental fruit fly populations established in a papaya orchard in Hawaii. A total of 20 plant species were evaluated, divided into four categories: 1) border plants, including corn, Zea mays L. (Poales: Poaceae), windbreaks and broad-leaved ornamentals, 7 species; 2) weed plants commonly found in agricultural fields in Hawaii, 6 species; 3) host crop plants, 1 species- zucchini, Cucurbita pepo L. (Violales: Curcurbitaceae), and 4) locally grown fruit trees, 6 species. Plants were established in pots and placed in an open field, in clusters encircling protein bait traps, 20 m away from the papaya orchard. Castor bean, Ricinus communis L. (Euphorbiales: Euphorbiaceae), panax, Polyscias guilfoylei (Bull) Bailey (Apiales: Araliaceae), tiger's claw, Erythnna variegata L. (Fabales: Fabaceae), and guava, Psidium guajava L. (Myrtales: Myrtaceae) were identified as preferred roosting hosts for the melon fly, and tiger's claw, panax, castor bean, Canada cocklebur, Xanthium strumarium L. (Asterales: Asteraceae), Brazilian pepper tree, Schinus terebinthifolius Raddi (Sapindales: Anacardiaceae), ti plant, Cordyline terminate (L.) Chev.(Liliales: Liliaceae), guava and several Citrus spp. were identified as preferred roosting hosts for oriental fruit fly. Guava had not previously been identified as a preferred roosting host for melon fly. Other than for the use of panax as a roosting host, there has previously been little attention to roosting hosts for oriental fruit fly. Establishment of preferred roosting hosts as crop borders may help to improve suppression of both fruit fly species by providing sites for bait spray applications. Further research is needed to assess the use of vegetation bordering other host crops as roosting hosts, especially for oriental fruit fly
Heat shock protein90 in lobular neoplasia of the breast
<p>Abstract</p> <p>Background</p> <p>Heat shock protein 90 (Hsp90) overexpression has been implicated in breast carcinogenesis, with putative prognostic and therapeutic implications. The purpose of this study is to evaluate the immunohistochemical expression of Hsp90 and to examine whether Hsp90 expression is associated with estrogen receptor alpha (ER-alpha) and beta (ER-beta) immunostaining in lobular neoplasia (LN) of the breast.</p> <p>Methods</p> <p>Tissue specimens were taken from 44 patients with LN. Immunohistochemical assessment of Hsp90, ER-alpha and ER-beta was performed both in the lesion and the adjacent normal breast ducts and lobules; the latter serving as control. As far as Hsp90 evaluation is concerned: i) the percentage of positive cells, and ii) the intensity was separately analyzed. Additionally, the Allred score was adopted and calculated. Accordingly, Allred score was separately evaluated for ER-alpha and ER-beta. The intensity was treated as an ordinal variable-score (0: negative, low: 1, moderate: 2, high: 3). Statistical analysis followed.</p> <p>Results</p> <p>Hsp90 immunoreactivity was mainly cytoplasmic in both the epithelial cells of normal breast (ducts and lobules) and LN. Some epithelial cells of LN also showed nuclear staining, but all the LN foci mainly disclosed a positive cytoplasmic immunoreaction for Hsp90. In addition, rare intralobular inflammatory cells showed a slight immunoreaction. The percentage of Hsp90 positive cells in the LN areas was equal to 67.1 ± 12.2%, whereas the respective percentage in the normal adjacent breast tissue was 69.1 ± 11.6%; the difference was not statistically significant. The intensity score of Hsp90 staining was 1.82 ± 0.72 in LN foci, while in the normal adjacent tissue the intensity score was 2.14 ± 0.64. This difference was statistically significant (p = 0.029, Wilcoxon matched-pairs signed-ranks test). The Hsp90 Allred score was 6.46 ± 1.14 in the LN foci, significantly lower than in the normal adjacent tissue (6.91 ± 0.92, p = 0.049, Wilcoxon matched-pairs signed-ranks test). Within the LN foci, the Hsp90 Allred score was neither associated with ER-alpha, nor with ER-beta percentage.</p> <p>Conclusion</p> <p>Hsp90 was lower in LN foci both at the level of intensity and Allred score, a finding contrary to what might have been expected, given that high Hsp90 expression is detected in invasive breast carcinomas. Hsp90 deregulation does not seem to be a major event in LN pathogenesis.</p
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in
operation since July 2014. This paper describes the second data release from
this phase, and the fourteenth from SDSS overall (making this, Data Release
Fourteen or DR14). This release makes public data taken by SDSS-IV in its first
two years of operation (July 2014-2016). Like all previous SDSS releases, DR14
is cumulative, including the most recent reductions and calibrations of all
data taken by SDSS since the first phase began operations in 2000. New in DR14
is the first public release of data from the extended Baryon Oscillation
Spectroscopic Survey (eBOSS); the first data from the second phase of the
Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2),
including stellar parameter estimates from an innovative data driven machine
learning algorithm known as "The Cannon"; and almost twice as many data cubes
from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous
release (N = 2812 in total). This paper describes the location and format of
the publicly available data from SDSS-IV surveys. We provide references to the
important technical papers describing how these data have been taken (both
targeting and observation details) and processed for scientific use. The SDSS
website (www.sdss.org) has been updated for this release, and provides links to
data downloads, as well as tutorials and examples of data use. SDSS-IV is
planning to continue to collect astronomical data until 2020, and will be
followed by SDSS-V.Comment: SDSS-IV collaboration alphabetical author data release paper. DR14
happened on 31st July 2017. 19 pages, 5 figures. Accepted by ApJS on 28th Nov
2017 (this is the "post-print" and "post-proofs" version; minor corrections
only from v1, and most of errors found in proofs corrected
Efficacy and Safety of High-Dose Rifampin in Pulmonary Tuberculosis. A Randomized Controlled Trial
Rationale: We examined whether increased rifampin doses could shorten standard therapy for tuberculosis without increased toxicity. Objectives: To assess the differences across three daily oral doses of rifampin in change in elimination rate of Mycobacterium tuberculosis in sputum and frequency of rifampin-related adverse events. Methods: We conducted a blinded, randomized, controlled phase 2 clinical trial of 180 adults with new smear-positive pulmonary tuberculosis, susceptible to isoniazid and rifampin. We randomized 1:1:1 to rifampin at 10, 15, and 20 mg/kg/d during the intensive phase. We report the primary efficacy and safety endpoints: change in elimination rate of M. tuberculosis log10 colony-forming units and frequency of grade 2 or higher rifampin-related adverse events. We report efficacy by treatment arm and by primary (area under the plasma concentrationâtime curve [AUC]/minimum inhibitory concentration [MIC]) and secondary (AUC) pharmacokinetic exposure. Measurements and Main Results: Each 5-mg/kg/d increase in rifampin dose resulted in differences of â0.011 (95% confidence interval, â0.025 to +0.002; Pâ=â0.230) and â0.022 (95% confidence interval, â0.046 to â0.002; Pâ=â0.022) log10 cfu/ml/d in the modified intention-to-treat and per-protocol analyses, respectively. The elimination rate in the per-protocol population increased significantly with rifampin AUC0â6 (Pâ=â0.011) but not with AUC0â6/MIC99.9 (Pâ=â0.053). Grade 2 or higher rifampin-related adverse events occurred with similar frequency across the three treatment arms: 26, 31, and 23 participants (43.3%, 51.7%, and 38.3%, respectively) had at least one event (Pâ=â0.7092) up to 4 weeks after the intensive phase. Treatment failed or disease recurred in 11 participants (6.1%). Conclusions: Our findings of more rapid sputum sterilization and similar toxicity with higher rifampin doses support investigation of increased rifampin doses to shorten tuberculosis treatment
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