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- Cerecetto, H, et al.
(författare)
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Synthesis and herbicidal activity of N-oxide derivatives
- 2000
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Ingår i: Journal of Agricultural and Food Chemistry. - : American Chemical Society (ACS). - 0021-8561 .- 1520-5118. ; 48:7, s. 2995-3002
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Tidskriftsartikel (refereegranskat)abstract
- As part of an ongoing program on the chemistry and biological activity of N-oxide-containing molecules, a number of novel 1,2,5-oxadiazole N-oxide, benzo[1,2-c]1,2,5-oxadiazole N-oxide, and quinoxaline N,N'-dioxide derivatives were synthesized and evaluated for their herbicidal activity. Many of these compounds exhibited moderate to good herbicidal pre-emergence activity against Triticum aestivum. Dose-response studies were done on the more representative compounds (12, 20, and 26). The most active compound, butylcarbamoylbenzo[1,2-c]l,2,5-oxadiazole N-oxide, 26, displayed herbicidal activity at concentrations as low as 24 g/ha.
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- Costello Daly, C, et al.
(författare)
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Validation of the WHO diagnostic algorithm and development of an alternative scoring system for the management of women presenting with vaginal discharge in Malawi
- 1998
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Ingår i: Sexually Transmitted Infections. - : BMJ Publishing Group Ltd. - 1368-4973 .- 1472-3263. ; 74:Suppl 1, s. S50-S58
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To evaluate the performance of the WHO algorithm for the detection of cervical infection in women presenting with vaginal discharge and modify the risk assessment score for optimum effectiveness in Malawi.METHODS: 550 consecutive women presenting with non-ulcerative genitourinary complaints were interviewed and examined. Cervical infection was defined as presence of Neisseria gonorrhoeae on culture and/or Chlamydia trachomatis by EIA. Other laboratory investigations included wet mount microscopy, serology for syphilis and HIV, LED testing of cervical and vaginal secretions, and pH testing of vaginal fluid. Sensitivity, specificity, and positive predictive values (PPV) of different algorithms were determined in the analysis.RESULTS: Cervical infection was identified in 19.5% of women (17.1% gonorrhoea, 3.7% chlamydial infection). The sensitivity/specificity/PPV of the WHO risk assessment were 43%/73%/28%, respectively by history and 62%/61%/27% with the addition of speculum examination. Using Malawi results to modify the risk assessment improved the performance to 61%/68%/31% respectively by history alone, which increased to 73%/64%/33% with bimanual examination and 72%/56%/29% with speculum examination.CONCLUSION: The sensitivity of the WHO risk assessment is low for the detection of cervical infection in Malawi. Although the Malawi risk assessment performed somewhat better on history alone, this study identified external and bimanual examination variables that improved the diagnostic performance of the algorithm in settings where speculum examination is not possible. Although the PPVs of the algorithms are low, country specific risk assessments can provide a framework for management until simple, affordable diagnostic tests for the definitive diagnosis of cervical infection are available.
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- Di Russo, Jacopo, et al.
(författare)
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Endothelial basement membrane laminin 511 is essential for shear stress response
- 2017
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Ingår i: EMBO Journal. - : EMBO. - 0261-4189 .- 1460-2075. ; 36:2, s. 183-201
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Tidskriftsartikel (refereegranskat)abstract
- Shear detection and mechanotransduction by arterial endothelium requires junctional complexes containing PECAM-1 and VE-cadherin, as well as firm anchorage to the underlying basement membrane. While considerable information is available for junctional complexes in these processes, gained largely from in vitro studies, little is known about the contribution of the endothelial basement membrane. Using resistance artery explants, we show that the integral endothelial basement membrane component, laminin 511 (laminin α5), is central to shear detection and mechanotransduction and its elimination at this site results in ablation of dilation in response to increased shear stress. Loss of endothelial laminin 511 correlates with reduced cortical stiffness of arterial endothelium in vivo, smaller integrin β1-positive/vinculin-positive focal adhesions, and reduced junctional association of actin–myosin II. In vitro assays reveal that β1 integrin-mediated interaction with laminin 511 results in high strengths of adhesion, which promotes p120 catenin association with VE-cadherin, stabilizing it at cell junctions and increasing cell–cell adhesion strength. This highlights the importance of endothelial laminin 511 in shear response in the physiologically relevant context of resistance arteries.
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- Entiauspe-Neto, O. M., et al.
(författare)
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Taxonomic Status of Two Simultaneously Described Apostolepis Cope, 1862 Species (Dipsadidae: Elapomorphini) from Caatinga Enclaves Moist Forests, Brazil
- 2020
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Ingår i: Journal of Herpetology. - : Society for the Study of Amphibians and Reptiles. - 0022-1511. ; 54:2, s. 225-234
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Tidskriftsartikel (refereegranskat)abstract
- Apostolepis mariae and Apostolepis thalesdelemai are two simultaneously described Elapomorphini snake species for two mountain ranges of Caatinga Enclaves moist forests in the state of Ceara, northeastern Brazil. Both species were differentiated from congeners and from one another based exclusively on external morphology. We examined the type specimens as well as a comprehensive series of specimens for both species and provide evidence for the recognition of both taxa as conspecific. We apply Article 24.2.1 of the International Code of Zoological Nomenclature (ICZN) that provides guidelines for taxonomic status precedence for both species based on the principle of the first reviser decision. Based on the ICZN code, we gave precedence for A. thalesdelemai over A. mariae. Finally, we provide a complementary diagnosis for A. thalesdelemai along with comments on its geographic distribution, natural history, and conservation.
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