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Within the context of data from a previously published model our work suggests that gene expression profiles associated with hypoxia, stemness and drug resistance may reside in tumor subpopulations predictably growing in PDX models. This approach provides a novel opportunity for prospective mechanistic studies of ITH.Under the hypothesis that organically managed cacao agroforestry systems report a lower global warming potential (GWP) and reduce other environmental pressure indicators compared with conventionally managed systems and monocultures, this work discusses how global transportation can cut back the ecological advantage of the production phase. For this purpose, the life cycle assessment (LCA) of 1 kg of dark chocolate manufactured with Ecuadorian cacao has been performed (cradle-to-retailer approach), including the indirect impacts of transportation and estimating the equilibrium distances beyond which organic chocolate would have a higher impact than chocolate manufactured from cacao grown in monocultures and/or conventionally managed systems. To articulate the discussion, the carbon footprint (CF) of cacao/chocolate was analyzed together with 10 additional LCA-related impact categories. Three management systems-conventional monoculture (CM) and agroforestry (CA), and organic agroforestry (OA)-and three differente would have a larger CF than chocolate manufactured from cacao grown, respectively, in CA and CM systems. Our results indicate that transportation would cancel out this and most other comparative ecological advantages of producing organic cacao analyzed in this work. Directly exporting chocolate from cacao-producing countries and relocating chocolate manufacture would help reduce GHG emissions and other environmental impacts of the supply chain.Takayasu arteritis (TAK) is a chronic inflammatory vasculitis of unknown origin affecting large vessels, predominantly the aorta and its main branches. TAK usually affects young women and the management of pregnancy during this vasculitis may be a challenging situation. After a review of the literature, we analysed the data of 505 pregnancies in 373 TAK patients. We discuss main results to clarify if the pregnancy outcome is affected by TAK, especially during disease clinical onset or disease activity. We also discuss the potential impact of pregnancy on TAK prognosis. Disease activity of TAK appears independently associated with a poor pregnancy outcome. More than 5% of pregnant women with TAK develop a life-threatening maternal cardiovascular complication. A good control of TAK disease activity and arterial hypertension before conception and during pregnancy is critical to improve both maternal and foetal outcomes. selleck Pregnancies in the setting of TAK should be considered high-risk, requiring a close collaboration between specialists involved in the care of TAK and obstetricians.Sesquiterpenoids with diverse skeleton types are regarded as potential lead compounds in pharmacological and other applications. Herein, we report the discovery of two new cadinane-type sesquiterpenoids, paecilacadinol A (1) and B (2); two new drimane-type sesquiterpenoids, ustusol D (3) and ustusol E (4); and six known analogs (5-10) from the endophytic fungus Paecilomyces sp. TE-540, enriching the structural diversity of naturally occurring sesquiterpenoids. Their planar structures were determined on the basis of detailed interpretation of 1D and 2D NMR spectroscopy and HRESIMS data, while their stereochemical structures were established by X-ray crystallographic analyses for 1 and 3-8 and theoretical calculations for 2. Notably, compounds 1 and 2 represent novel examples of cadinane-type sesquiterpenoids with ether bonds formed by intramolecular dehydration. Compounds 5 and 6 showed moderate activities against acetylcholinesterase (AChE), with IC50 values of 43.02 ± 6.01 and 35.97 ± 2.12 μM, respectively. Docking analysis predicted that 5 bound well in the catalytic pocket of AChE via hydrophobic interactions with Trp84, Gly117, Ser122, and Tyr121 residues, while 6 was located with Asp72 and Ser122 residues.
Tandem basilar artery occlusions (tBAO) are defined as concomitant basilar artery and extracranial dominant vertebral artery occlusions. The prognosis of such tBAO treated by mechanical thrombectomy (MT) has been scantly reported. The purpose of our study was to compare the safety and effectiveness of MT for patients with tBAO compared to those with non-tandem basilar artery occlusions (ntBAO).
Retrospective analysis of a database of patients who underwent MT at two academic centres. All patients treated for BAO were retrieved. Patients with tBAO, defined as a concomitant BAO and extracranial vertebral artery (VA) occlusion or severe stenosis ≥70% (V1 or proximal V2 segment) were compared with patients with ntBAO.
A total of 15 patients with tBAO and 74 patients with ntBAO were enrolled. Successful reperfusion (modified thrombolysis in cerebral infarction score ≥2b) was obtained in 73.3% versus 90.5% (OR = 0.29, 95%CI 0.07-1.15), good clinical outcome (3-months modified Rankin scale ≤2) was reached by 26.7% versus 32.4% (OR = 0.76; 95% CI 0.24-2.63) and mortality at 3-months was 46.7% versus 31% (OR = 1.94; 95%CI 0.63-6) of patients with tBAO versus ntBAO, respectively. Two patients (13.3%) with tBAO and three (4%) with ntBAO had symptomatic intracranial haemorrhage (OR = 3.64; 95% CI 0.55-24).
Mechanical thrombectomy for patients with tandem basilar artery occlusion tends to be associated with lower rates of successful reperfusion and good clinical outcome, and higher rate of mortality. Larger multicentre studies are warranted to better precise the proper selection and management of such patients.
Mechanical thrombectomy for patients with tandem basilar artery occlusion tends to be associated with lower rates of successful reperfusion and good clinical outcome, and higher rate of mortality. Larger multicentre studies are warranted to better precise the proper selection and management of such patients.In this issue of Neuron, through an elegant progression of computational and bio-informatic experiments centered on transcriptomic comparison of vulnerable and resistant neurons across species, Roussarie et al. (2020) predict and provide experimental support for specific genes and molecular pathways driving Alzheimer's disease, including the splicing factor PTBP1.
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