FTY720 Suppresses Liver Tumor Metastasis by Reducing the Population of Circulating Endothelial Progenitor Cells

Background: Surgical procedures such as liver resection and liver transplantation are the first-line treatments for hepatocellular carcinoma (HCC) patients. However, the high incidence of tumor recurrence and metastasis after liver surgery remains a major problem. Recent studies have shown that hepatic ischemia-reperfusion (I/R) injury and endothelial progenitor cells (EPCs) contribute to tumor growth and metastasis. We aim to investigate the mechanism of FTY720, which was originally applied as an immunomodulator, on suppression of liver tumor metastasis after liver resection and partial hepatic I/R injury. Methodology/Principal Findings: An orthotopic liver tumor model in Buffalo rat was established using the hepatocellular carcinoma cell line McA-RH7777. Two weeks after orthotopic liver tumor implantation, the rats underwent liver resection for tumor-bearing lobe and partial hepatic I/R injury. FTY720 (2 mg/kg) was administered through the inferior caval vein before and after I/R injury. Blood samples were taken at days 0, 1, 3, 7, 14, 21 and 28 for detection of circulating EPCs (CD133+CD34+). Our results showed that intrahepatic and lung metastases were significantly inhibited together with less tumor angiogenesis by FTY720 treatment. The number of circulating EPCs was also significantly decreased by FTY720 treatment from day 7 to day 28. Hepatic gene expressions of CXCL10, VEGF, CXCR3, CXCR4 induced by hepatic I/R injury were down-regulated in the treatment group. Conclusions/Significance: FTY720 suppressed liver tumor metastasis after liver resection marred by hepatic I/R injury in a rat liver tumor model by attenuating hepatic I/R injury and reducing circulating EPCs. © 2012 Li et al.published_or_final_versio

An organoid biobank for childhood kidney cancers that captures disease and tissue heterogeneity

Kidney tumours are among the most common solid tumours in children, comprising distinct subtypes differing in many aspects, including cell-of-origin, genetics, and pathology. Pre-clinical cell models capturing the disease heterogeneity are currently lacking. Here, we describe the first paediatric cancer organoid biobank. It contains tumour and matching normal kidney organoids from over 50 children with different subtypes of kidney cancer, including Wilms tumours, malignant rhabdoid tumours, renal cell carcinomas, and congenital mesoblastic nephromas. Paediatric kidney tumour organoids retain key properties of native tumours, useful for revealing patient-specific drug sensitivities. Using single cell RNA-sequencing and high resolution 3D imaging, we further demonstrate that organoid cultures derived from Wilms tumours consist of multiple different cell types, including epithelial, stromal and blastemal-like cells. Our organoid biobank captures the heterogeneity of paediatric kidney tumours, providing a representative collection of well-characterised models for basic cancer research, drug-screening and personalised medicine

Ancient and Modern Genomes Unravel the Evolutionary History of the Rhinoceros Family

Only five species of the once-diverse Rhinocerotidae remain, making the reconstruction of their evolutionary history a challenge to biologists since Darwin. We sequenced genomes from five rhinoceros species (three extinct and two living), which we compared to existing data from the remaining three living species and a range of outgroups. We identify an early divergence between extant African and Eurasian lineages, resolving a key debate regarding the phylogeny of extant rhinoceroses. This early Miocene (∼16 million years ago [mya]) split post-dates the land bridge formation between the Afro-Arabian and Eurasian landmasses. Our analyses also show that while rhinoceros genomes in general exhibit low levels of genome-wide diversity, heterozygosity is lowest and inbreeding is highest in the modern species. These results suggest that while low genetic diversity is a long-term feature of the family, it has been particularly exacerbated recently, likely reflecting recent anthropogenic-driven population declines. © 2021 The Authors.The authors acknowledge support from the Science for Life Laboratory, the Garvan Institute of Medical Research, the Knut and Alice Wallenberg Foundation, and the National Genomics Infrastructure funded by the Swedish Research Council and Uppsala Multidisciplinary Center for Advanced Computational Science for assistance with massively parallel sequencing and access to the UPPMAX computational infrastructure. We thank the Natural History Museum at the University of Oslo for providing the Javan rhinoceros sample. We thank the Museum of the Institute of Plant and Animal Ecology (UB RAS, Ekaterinburg) for providing the sample of Siberian unicorn. M.T.P.G. was supported by European Research Council (ERC) Consolidator grant 681396 (Extinction Genomics). E.D.L. was supported by Independent Research Fund Denmark grant 8021-00218B . A.C. was supported by an Australian Research Council Laureate Fellowship ( FL140100260 ). T.M.B. is supported by funding from the ERC under the European Union’s Horizon 2020 research and innovation program (grant agreement 864203 ), grant BFU2017-86471-P ( MINECO /FEDER, UE), “Unidad de Excelencia María de Maeztu” funded by the AEI ( CEX2018-000792-M ), Howard Hughes International Early Career, and Secretaria d’Universitats i Recerca and CERCA Programme del Departament d’Economia i Coneixement de la Generalitat de Catalunya ( GRC 2017 SGR 880 ). L.D. was supported by the Swedish Research Council ( 2017-04647 ) and Formas ( 2018-01640 ). We thank Dmitry Bogdanov and Roger Hall for giving us permission to use their rhinoceros artwork

The mammals of Angola

Scientific investigations on the mammals of Angola started over 150 years ago, but information remains scarce and scattered, with only one recent published account. Here we provide a synthesis of the mammals of Angola based on a thorough survey of primary and grey literature, as well as recent unpublished records. We present a short history of mammal research, and provide brief information on each species known to occur in the country. Particular attention is given to endemic and near endemic species. We also provide a zoogeographic outline and information on the conservation of Angolan mammals. We found confirmed records for 291 native species, most of which from the orders Rodentia (85), Chiroptera (73), Carnivora (39), and Cetartiodactyla (33). There is a large number of endemic and near endemic species, most of which are rodents or bats. The large diversity of species is favoured by the wide range of habitats with contrasting environmental conditions, while endemism tends to be associated with unique physiographic settings such as the Angolan Escarpment. The mammal fauna of Angola includes 2 Critically Endangered, 2 Endangered, 11 Vulnerable, and 14 Near-Threatened species at the global scale. There are also 12 data deficient species, most of which are endemics or near endemics to the countryinfo:eu-repo/semantics/publishedVersio

The impact of the Krakatoa eruption in 1883 on the population of <i>Rhinoceros sondaicus</i> in Ujung Kulon, with details of rhino observations from 1857 to 1949

A recent suggestion that the entire population of the Javan Rhinoceros in Ujung Kulon National Park was annihilated by the effects of the eruption of the Krakatoa in 1883 is investigated. Based on a review of contemporary reports, it is shown that people survived the waves and remained settled in one village until 1906 when it was evacuated during a plague of tigers. The first report of a rhinoceros in the peninsula of Ujung Kulon dates from 1857 and the animals were occasionally reported from the area afterwards. There is no indication from the available estimates and sightings that rhinos were exterminated in the area. Ujung Kulon has been a protected area since 1921. Rhino numbers ranged upwards to about 40 or 50 for most of the period until 1949. The population of Rhinoceros sondaicus is not a new founder population established after the eruption of the Krakatoa in 1883

A price list of birds collected by Alfred Russel Wallace inserted in The Ibis of 1863

10.25226/bboc.v138i4.2018.a5Bulletin of the British Ornithologists' Club1384335-34

Wallace's mystery Flycatcher

Raffles Bulletin of Zoology6111-

A new theory to explain the receipt of Wallace's Ternate essay by Darwin in 1858

10.1111/j.1095-8312.2011.01808.xBiological Journal of the Linnean Society1051249-252BJLS

On Temminck's tailless Ceylon Junglefowl, and how Darwin denied their existence

Ceylon Junglefowl was described in 1807 by the Dutch ornithologist Coenraad Jacob Temminck. The specimens he examined were tailless (‘rumpless’) and therefore he named them Gallus ecaudatus. In 1831 the French naturalist René Primevère Lesson described a Ceylon Junglefowl with a tail as Gallus lafayetii (= lafayettii), apparently unaware of Temminck's ecaudatus. Subsequently, ecaudatus and lafayettii were realised to be the same species, of which G.stanleyi and G.lineatus are junior synonyms. However, Charles Darwin tried to disprove the existence of wild tailless junglefowl on Ceylon in favour of his theory on the origin of the domestic chicken.© 2017 The Authors. This is an open access article, available to all readers online. The attached file is the published version of the article

Practices and perspectives of patients and healthcare professionals on shared decision-making in nephrology.

Background Given the complexity and variety in treatment options for advanced chronic kidney disease (CKD), shared decision-making (SDM) can be a challenge. SDM is needed for making decisions that best suit patients' needs and their medical and living situations. SDM might be experienced differently by different stakeholders. This study aimed to explore clinical practice and perspectives on SDM in nephrology from three angles: observers, patients and healthcare professionals (HCPs). Methods An explanatory sequential mixed methods design was used. First, in the quantitative part of the study, outpatient consultations with patients with advanced chronic kidney disease (eGFR < 20 ml/min) were video recorded and SDM was assessed using the OPTION5 instrument. Subsequently, in the qualitative part, patients and HCPs reflected on their own SDM behaviour during individual stimulated recall interviews which were analysed using deductive thematic content analysis. Results Twenty nine consultations were recorded and observed in seven hospitals. The mean SDM score was 51 (range 25-80), indicating that SDM was applied to a moderate extent. The stimulated recall interviews with patients showed that they rely on the information provision and opinion of HCPs, expect consistency and support, and desire a proactive role. They also expect to be questioned by the HCP about their SDM preferences. HCPs said they were willing to incorporate patients' preferences in SDM, as long as there are no medical contraindications. They also prefer patients to take a prominent role in SDM. HCPs ascribe various roles to themselves in supporting patients' decision-making. Conclusions Although SDM was applied by HCPs to a moderate extent, improvement is needed, especially in helping patients get the information they need and in making sure that every patient is involved in SDM. This is even more important given the complex nature of the disease and the relatively high prevalence of limited health literacy among patients with chronic kidney disease