Adkinswomble3776

Invasive species can reach high abundances and dominate native environments. One of the most impressive examples of ecological invasions is the spread of the African sub-species of the honey bee throughout the Americas, starting from its introduction in a single locality in Brazil. The invasive honey bee is expected to more negatively impact bee community abundance and diversity than native dominant species, but this has not been tested previously. We developed a comprehensive and systematic bee sampling scheme, using a protocol deploying 11,520 pan traps across regions and crops for three years in Brazil. We found that invasive honey bees are now the single most dominant bee species. Such dominance has not only negative consequences for abundance and species richness of native bees but also for overall bee abundance (i.e., strong "numerical" effects of honey bees). EGFR inhibition Contrary to expectations, honey bees did not have stronger negative impacts than other native bees achieving similar levels of dominance (i.e., lack of negative "identity" effects of honey bees). These effects were remarkably consistent across crop species, seasons and years, and were independent from land-use effects. Dominance could be a proxy of bee community degradation and more generally of the severity of ecological invasions.

Systemic sclerosis (SSc) is a multiorgan autoimmune disease characterized by inflammation, vascular modification, and progressive fibrosis of the skin and several visceral organs. Innate and adaptive immune cells, including myeloid, B and T cells, are believed to be central to the pathogenesis of SSc. However, the role and functional state of neutrophil granulocytes (neutrophils) are ill-defined in SSc.

We performed a prospective study of neutrophils freshly isolated from SSc patients and healthy donors (HD) by measuring in these neutrophils (i) functional cell surface markers, including CD16, CD62L, CD66b, CD66c, CXCR1, CXCR2, and CXCR4; (ii) cytokine-activated intracellular signal transducer and activator of transcription (STAT) pathways, such as phosphorylated STAT3 (pSTAT3), pSTAT5, and pSTAT6; (iii) production of neutrophil extracellular traps (NET) and intracellular myeloperoxidase (MPO); and (iv) phagocytosis of bacteria by the neutrophils.

Neutrophils of SSc patients expressed lower CD16 and CD62L and higher pSTAT3 and pSTAT6 compared to HD. Moreover, neutrophils of SSc patients lacked CXCR1 and CXCR2, the receptors responding to the potent neutrophil chemoattractant CXCL8. Neutrophils of SSc patients were also deficient in MPO levels, NET formation, and phagocytosis of bacteria.

Neutrophils of patients with SSc display several functional defects affecting cell migration, NET formation, and phagocytosis of bacteria.

Neutrophils of patients with SSc display several functional defects affecting cell migration, NET formation, and phagocytosis of bacteria.Here, we present an experimental model for human luminal progenitor cells that enables single, primary cells isolated from normal tissue to generate complex branched structures resembling the ductal morphology of low-grade carcinoma of no special type (NST). Thereby, we find that ductal structures are generated through invasive branching morphogenesis via matrix-remodeling and identify reduced actomyosin contractility as a prerequisite for invasion. In addition, we show that knockout of E-cadherin causes a dissolution of duct formation as observed in invasive lobular carcinoma (ILC), a subtype of invasive carcinomas where E-cadherin function is frequently lost. Thus, our model shows that invasive capacity can be elicited from normal luminal cells in specific environments which results in low-grade NST morphology. This assay offers a platform to investigate the dynamics of luminal cell invasion and unravel the impact of genetic and non-genetic aberrations on invasive morphology. This article is protected by copyright. All rights reserved.

To further characterise solitary osseous plasmacytoma in dogs, an extremely rare disease. To describe diagnosis, disease progression and treatment outcomes in dogs with solitary osseous plasmacytoma.

Retrospective review of dogs with solitary osseous plasmacytomas that were diagnosed and treated at a single institution from 2005 to 2019. Kaplan-Meier single group survival analysis was used to estimate median survival time and progression-free interval.

Thirteen dogs met the inclusion criteria for the study, and of those, 11 were treated. The median age at diagnosis was 8 years (range 4 to 11). Most solitary osseous plasmacytomas occurred in the vertebrae (n=8). Other sites included the maxilla (n=2), the mandible (n=1), the tibia (n=1) and the carpus (n=1). The median survival time for all dogs with solitary osseous plasmacytoma was 912 days (range 5 to 2179), and the progression-free interval for treated dogs was 310 days (range 22 to 2179). Most dogs were treated with radiation therapy (n=10) with nine of 10 receiving a definitive, daily fractionated protocol and with five of ten having had neoadjuvant surgery. Seven dogs received chemotherapy, which was initiated after progressive disease in five dogs. The median survival time for dogs that completed radiation therapy (n=9) was 1166 days (range 545 to 2179). While five dogs developed lesions at other sites, no dogs progressed to multiple myeloma.

Canine solitary osseous plasmacytomas can be managed long term with appropriate local therapy. This observation reflects the biologic behaviour observed in humans.

Canine solitary osseous plasmacytomas can be managed long term with appropriate local therapy. This observation reflects the biologic behaviour observed in humans.Climate change is shifting forest tree species distributions across elevational and latitudinal gradients, and these changes are often pronounced at ecotones where species meet their climatic bounds and are replaced by other species. Using an extensive ecotone composed of lower-montane white fir (Abies concolor var. lowiana) and upper-montane red fir (Abies magnifica var. magnifica) in the central Sierra Nevada range of California, USA, we (1) examined how the demographics of the ecotone have responded to recent climate using a field observational study and a historical dataset, (2) quantified climate drivers across species life stages using contemporary demographic data, and (3) tested the potential impacts of future climate on species-specific seedling survival and growth in a fully factorial growth chamber experiment that varied temperature, growing season length, and water availability. A re-examination of the ecotone midpoint after 35 yr suggested a reduction in A. concolor sapling and tree densities andll expand conditions that promote A. concolor abundance and impede A. magnifica abundance across the ecotone; however, disturbance activity and microclimatic conditions will also influence regeneration and overstory tree dynamics. Our study demonstrates the importance of quantifying species-specific responses to climate and indicates that widespread regeneration failure may be one possible consequence in which species exhibit strong sensitivity to projected climate conditions.

Assessing the risk factors for and consequences of infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) during pregnancy is essential to guide clinical care. Previous studies on SARS-CoV-2 infection in pregnancy have been among hospitalized patients, which may have exaggerated risk estimates of severe outcomes because all cases of SARS-CoV-2 infection in the pregnant population were not included. The objectives of this study were to identify risk factors for and outcomes after SARS-CoV-2 infection in pregnancy independent of severity of infection in a universally tested population, and to identify risk factors for and outcomes after severe infection requiring hospital admission.

This was a prospective population-based cohort study in Denmark using data from the Danish National Patient Register and Danish Microbiology Database and prospectively registered data from medical records. We included all pregnancies between March 1 and October 31, 2020 and compared women with a positive SAR95% CI 1.60-14.12), and having asthma (OR 4.53, 95% CI 1.39-14.79). We found no difference in any obstetrical or neonatal outcomes.

Only 1 in 20 women with SARS-CoV-2 infection during pregnancy required admission to hospital due to COVID-19. Risk factors for admission comprised obesity, smoking, asthma, and infection after GA 22weeks. Severe adverse outcomes of SARS-CoV-2 infection in pregnancy were rare.

Only 1 in 20 women with SARS-CoV-2 infection during pregnancy required admission to hospital due to COVID-19. Risk factors for admission comprised obesity, smoking, asthma, and infection after GA 22 weeks. Severe adverse outcomes of SARS-CoV-2 infection in pregnancy were rare.

Liver diseases are among the ten deadliest diseases in the world. Measuring PON1 is a test to assess the degree of liver disorder. There are several preliminary studies on the rate of PON1 activity in people with liver disease, and there are differences between the results of these studies; therefore, the aim of this research work is to determine the level of PON1 activity in people with liver disease using meta-analysis.

The study searched to select articles that were published electronically from 2002 to 2020, in national and international databases of SID, MagIran, Embase, ScienceDirect, Scopus, PubMed, and Web of Science (WoS).

Among the articles included in the meta-analysis, the samples in the case (patients) and control groups were 807 and 2276, respectively. The mean activity of PON1 in individuals with liver disease in the case and control groups were 142.06 ± 7.7 and 272.19 ± 39.6, respectively, and this was statistically significant (P < 0.05). The mean difference analysis highlights a difatment in future.

Little data is available surrounding societal recommendations regarding extra-colonic malignancy in patients with inflammatory bowel disease (IBD). As a result, we systematically analyzed these international guidelines to assess their overall quality as well as their adherence to standards for high-quality practice guidelines.

A systematic search was performed in multiple databases to identify all guidelines pertaining to extra-colonic malignancy in IBD in April 2020. All guidelines were reviewed for conflicts of interest (COI)/funding, recommendation quality and strength, external document review, use of patient representation, and plans for update-as per Institute of Medicine standards. In addition, recommendations were compared between guidelines/societies. Statistical analysis was conducted using R.

A total of 11 recommendations on extra-colonic malignancy in IBD were put forth by 5 guidelines/societies. Zero percent of recommendations were found to be based on high-quality evidence, 36.4% of recommendations on moderate-quality evidence, and 63.6% of recommendations on low-quality evidence. 9.1% were strong recommendations, 0% were weak/conditional recommendations, and 90.9% of recommendations did not provide a strength. No guideline included patient representation or had plans for future update of their recommendations.

There is a consistent lack of high-quality recommendations for extra-colonic malignancy in IBD across different societal guidelines. The need for high-quality studies to improve the strength of recommendations is eminent, as this will ultimately lead to high-quality patient care.

There is a consistent lack of high-quality recommendations for extra-colonic malignancy in IBD across different societal guidelines. The need for high-quality studies to improve the strength of recommendations is eminent, as this will ultimately lead to high-quality patient care.