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1,014 result(s) for "Pallas"
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The harlequin ladybird, Harmonia axyridis: global perspectives on invasion history and ecology
The harlequin ladybird, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), is native to Asia but has been intentionally introduced to many countries as a biological control agent of pest insects. In numerous countries, however, it has been introduced unintentionally. The dramatic spread of H. axyridis within many countries has been met with considerable trepidation. It is a generalist top predator, able to thrive in many habitats and across wide climatic conditions. It poses a threat to biodiversity, particularly aphidophagous insects, through competition and predation, and in many countries adverse effects have been reported on other species, particularly coccinellids. However, the patterns are not consistent around the world and seem to be affected by many factors including landscape and climate. Research on H. axyridis has provided detailed insights into invasion biology from broad patterns and processes to approaches in surveillance and monitoring. An impressive number of studies on this alien species have provided mechanistic evidence alongside models explaining large-scale patterns and processes. The involvement of citizens in monitoring this species in a number of countries around the world is inspiring and has provided data on scales that would be otherwise unachievable. Harmonia axyridis has successfully been used as a model invasive alien species and has been the inspiration for global collaborations at various scales. There is considerable scope to expand the research and associated collaborations, particularly to increase the breadth of parallel studies conducted in the native and invaded regions. Indeed a qualitative comparison of biological traits across the native and invaded range suggests that there are differences which ultimately could influence the population dynamics of this invader. Here we provide an overview of the invasion history and ecology of H. axyridis globally with consideration of future research perspectives. We reflect broadly on the contributions of such research to our understanding of invasion biology while also informing policy and people.
Herbal Medicine Extracts Improve Motor Function by Anti-Inflammatory Activity in hSOD1sup.G93A Animal Model
Amyotrophic lateral sclerosis (ALS) is a multicomplex neurodegenerative disorder characterized by motor neuron death, muscle atrophy, and respiratory failure. Owing to its multicomplex mechanisms and multifactorial nature in the skeletal muscle and spinal cord (SC), no effective therapy has been developed. However, herbal medicines, known for their multitarget properties, have demonstrated promising efficacy with limited side effects in treating various diseases. Specifically, Paeonia lactiflora Pallas has been demonstrated to exhibit analgesic, antidepressant, anti-inflammatory, and neuroprotective effects. However, the pharmacological mechanisms underlying the beneficial effects of P. lactiflora in hSOD1[sup.G93A] animal models remain unexplored. Therefore, this study was conducted to investigate the multitarget effects of P. lactiflora in hSOD1[sup.G93A] transgenic mice, an ALS model. Footprint tests, western blot assays, and immunohistochemical analysis were used to assess the effect of P. lactiflora on the tibia anterior (TA), gastrocnemius (GC), and SC. The results revealed that P. lactiflora augmented motor function and decreased motor neuron loss in hSOD1[sup.G93A] mice. Furthermore, P. lactiflora significantly lowered the expression of proteins associated with inflammation and oxidative stress in the skeletal muscle (TA and GC) and SC. P. lactiflora also regulated autophagy function by reducing the levels of key markers, such as P62/sequestosome 1 (SQSTM1), microtubule-associated proteins 1A/1B light chain 3B, and SMAD family member 2, in the muscle and SC. Overall, P. lactiflora treatment improved motor function, prevented motor neuron death, and exhibited anti-inflammatory and antioxidative effects in the skeletal muscle and SC of ALS mouse models. These results suggest that P. lactiflora could serve as a promising multitarget therapeutic agent for systemic and multipathological diseases.
Observations and Quantitative Compositional Analysis of Ceres, Pallas, and Hygiea Using JWST/NIRSpec
We present JWST Near Infrared Spectrograph (NIRSpec) measurements of the three largest low-albedo main-belt asteroids: (1) Ceres, (2) Pallas, and (10) Hygiea. Their reflectance spectra all have very similar absorptions centered near 2.72 μ m attributed to Mg–OH in minerals. Within this band, Pallas also shows evidence of a sharper, deeper band, also centered near 2.72 μ m. These band positions are similar to those seen in the most aqueously altered carbonaceous chondrites and samples from Ryugu and Bennu. Absorptions in the 2.7–2.9 μ m region due to other cation–OH combinations are weak, if present. The NIRSpec spectrum of Ceres is consistent with the global average spectrum of Dawn, and the similarity between Ceres and Hygiea seen in other wavelength regions continues into the 2.5–2.8 μ m region. This similarity in spectral properties, and thus in interpretations of surface composition, implies that the two bodies may have had similar processes occur and similar histories. This suggests that Hygiea, similar to Ceres, may be associated with the “ocean worlds” despite its relatively small mass. Quantitative estimates of the hydrogen concentrations on the surfaces suggest hydrogen concentrations of roughly 0.5–1 wt%, consistent with CM chondrites. Additional absorptions attributed to ammoniated minerals are seen in Ceres’s and Hygiea’s spectra, as has been reported by others, but are not seen in Pallas’s spectrum. Absorptions are also seen in the 2.5–2.7 μ m region in all three asteroids, likely due to OH combination bands, and from roughly 3.9 to 4.3 μ m in Hygiea, which could be due to carbonates plus an unidentified constituent.
Identification of Tumor Necrosis Factor-Alpha (TNF-α) Inhibitor in Rheumatoid Arthritis Using Network Pharmacology and Molecular Docking
Background: This study aimed to investigate the molecular mechanism of Radix Paeoniae Alba (white peony, WP) in treating immune inflammatory diseases of rheumatoid arthritis (RA) and tumor necrosis factor-alpha (TNF-α) inhibitors (TNFis) by using network pharmacology and molecular docking. Methods: In this study, the ingredient of WP and the potential inflammatory targets of RA were obtained from the Traditional Chinese Medicine Systematic Pharmacology Database, GeneCard, and OMIM databases, respectively. The establishment of the RA–WP-potential inflammatory target gene interaction network was accomplished using the STRING database. Network maps of the WP–RA-potential inflammatory target gene network were constructed using Cytoscape software. Gene ontology (GO) and the biological pathway (KEGG) enrichment analyses were used to further explore the RA mechanism and therapeutic effects of WP. Molecular docking technology was used to analyze the optimal effective components from WP for docking with TNF-α. Results: Thirteen active ingredients and 71 target genes were screened from WP, and 49 of the target genes intersected with RA target inflammatory genes and were considered potential therapeutic targets. Network pharmacological analysis showed that the WP active ingredients such as mairin, DPHCD, (+)-catechin, beta-sitosterol, paeoniflorin, sitosterol, and kaempferol showed better correlation with RA inflammatory target genes such as PGR, PTGS1, PTGS2, NR3C2, TNFSF15, and CHRM2, respectively. The immune-inflammatory signaling pathways of the active ingredients for the treatment of RA are the TNF-α signaling pathway, Toll-like receptor signaling pathway, cell apoptosis, interleukin-17 signaling pathway, C-type lectin receptor signaling pathway, mitogen-associated protein kinase, etc . Molecular docking results suggested that mairin was the most appropriate natural TNFis. Conclusion: Our findings provide an essential role and basis for further immune-inflammatory studies into the molecular mechanisms of WP and TNFis development in RA.
Impact of adding palbociclib on treatment adherence to ongoing adjuvant endocrine treatment in the global randomized PALLAS randomized trial in patients with early breast cancer
Purpose Using patient-reported outcomes (PROs) and more objective measures, we evaluated adherence to adjuvant palbociclib and ET in the PALLAS trial, and the impact of palbociclib on ET adherence. Methods The open-label, global, phase 3 PALLAS trial randomized patients with hormone receptor-positive (HR+), HER2-negative stage II–III breast cancer (1:1) to either 26 cycles of palbociclib (125 mg/day for 21 days and then 7 days off) plus adjuvant ET, versus ET alone. After 23.7 months median follow-up, palbociclib was stopped due to futility of the intervention and patients were moved to follow-up. For each cycle, daily adherence to ET was measured with study diaries; for palbociclib, study diaries and pill counts. At cycles 2, 3, 6, 12, 18 and 24, patients completed the McHorney Adherence Questionnaire. Mean persistence was defined in months from treatment initiation to cessation. Results Four thousand six hundred eighty-eight of 5796 total PALLAS participants were included. Across all cycles, mean daily ET adherence values measured by study diary were > 98.0% and did not differ between treatment arms. Mean persistence to ET was similar between arms (19.2 months for palbociclib + ET vs. 19.6 months for ET alone). However, patient-reported maximal ET adherence was higher across time for palbociclib + ET compared to ET alone ( p  = 0.05). Conclusion In the PALLAS trial, addition of palbociclib did not decrease adherence to adjuvant ET. Though numbers declined over time, daily adherence for palbociclib and ET remained relatively high at each cycle. Trial Registration: The trial is registered with ClinicalTrials.gov (NCT02513394; 07-31-2015) and EudraCT (2014-005181-30).
Azadirachtin affected the intestinal structure and microbiota of adult Harmonia axyridis (Coleoptera: Coccinellidae) while controlling Spodoptera frugiperda (Lepidoptera: Noctuidae)
Azadirachtin impairs the growth and molting process of Lepidoptera and other insects and provokes strong developmental delays that affect insect survival. Predators of these insects will also be affected to a certain extent by the process of pesticide application. Therefore, how azadirachtin affects the growth and intestinal microbiota of adult Harmonia axyridis after feeding on azadirachtin-treated 2nd instar larvae of Spodoptera frugiperda was investigated. The results showed that the columnar cells in the midgut of the untreated ladybug adults were normal and that microvilli were abundant. Electron micrographs revealed that azadirachtin (2 and 10 mg/kg) destroyed the intestinal structure, which caused a decrease in the number of microvilli and sparsity of H. axyridis midgut columnar cell matrices, with many columnar cells bursting and releasing cell debris. In turn, azadirachtin affected the insect intestinal environment, with glutathione S-transferase (GST) and carboxylase (CarE) significantly decreasing, although mixed-functional oxidase (MFO) was not affected. Azadirachtin treatment significantly increased the abundance of Enterococcus , Serratia and Enterobacter and decreased the abundance of Hafnia-Obesumbacterium . It affected the absorption and transmission of material energy and resulted in an inhibition of the growth and development of H. axyridis . This study enriches the knowledge of the H. axyridis intestinal microbial community after treatment with azadirachtin and provides guidance for improving the control effect of S. frugiperda by using a combined application of biological control and pesticide.
Toxoplasmosis in Zoo Animals: A Retrospective Pathology Review of 126 Cases
Toxoplasma gondii is an extremely successful zoonotic protozoan parasite that has been demonstrated in a wide range of endo- and poikilothermic species. Although infection is widespread amongst domestic animals, overt disease other than abortion in small ruminants is sporadic. This survey evaluates toxoplasmosis in zoo animals based on a systematic review of pathology archive material (n = 33,506 submissions) over a 16-year study period. A total of 126 submissions, deriving from 32 zoos, two educational facilities and two private owners, were included in the study, based on gross lesions, cytological, histological and immunohistological diagnosis of toxoplasmosis. Clinical history, signalment, annual distribution and post-mortem findings were evaluated. A total of 31 species (mammalian 97%/avian 3%) were represented in the study material. Ring-tailed lemurs, slender tailed meerkats, Pallas’ cats, and squirrel monkeys were most affected. An unusual outbreak occurred in Asian small-clawed otters, in which toxoplasmosis has not been reported to date. Clinically, animals over 12 months of age presented with non-specific symptoms (anorexia, weight loss, lethargy, debilitation), neurological, gastrointestinal or respiratory signs and sudden death. Systemic disease predominated, with a propensity for encephalitis in meerkats and Pallas’ cats and systemic disease involving lymphoid tissues in ring-tailed lemurs. Cases in the UK occurred year-round, with species-specific peaks and increases between August and November. This study reinforces the importance of toxoplasmosis as a significant cause of sporadic and epizootic mortalities in a wide range of zoo animals. Feral cat control is crucial to reduce infection pressure.
Combination of Atractylenolide I, Atractylenolide III, and Paeoniflorin promotes angiogenesis and improves neurological recovery in a mouse model of ischemic Stroke
Background Prognosis is critically important in stroke cases, with angiogenesis playing a key role in determining outcomes. This study aimed to investigate the potential protective effects of Atractylenolide I (Atr I), Atractylenolide III (Atr III), and Paeoniflorin (Pae) in promoting angiogenesis following cerebral ischemia. Methods The bEnd.3 cell line was used to evaluate the effects of these three compounds on vascular endothelial cell proliferation, migration, and tube formation. Male C57BL/6 mice underwent transient middle cerebral artery occlusion (MCAO), followed by daily intragastric administration of the Chinese medicine compounds to assess their impact on brain protection and angiogenesis. In vivo experiments included measuring infarct size and assessing neurological function. Immunofluorescence staining and an angiogenesis antibody array were used to evaluate angiogenesis in ischemic brain tissue. Functional enrichment analysis was performed to further investigate the pathways involved in the protective effects of the compounds. Molecular docking analysis explored the potential binding affinity of the compounds to insulin-like growth factor 2 (IGF-2), and Western blotting was used to measure levels of angiogenesis-related proteins. Results In vitro, the combination of Atr I, Atr III, and Pae enhanced cell proliferation, promoted migration, and stimulated tube formation. In vivo, the combined treatment significantly facilitated neurological function recovery and angiogenesis by day 14. The treatment also increased levels of angiogenesis-related proteins, including IGF-2. Pearson correlation analysis revealed a strong positive association between IGF-2 levels in ischemic brain tissue and angiogenesis, suggesting a good affinity of the compounds for the IGF-2 binding site, as supported by molecular docking analysis. Conclusion The administration of Atr I, Atr III, and Pae has shown significant enhancements in long-term stroke recovery in mice, likely due to the promotion of angiogenesis via increased activation of the IGF-2 pathway in ischemic brain tissue. Graphical Abstract
Diversity of endophytic fungi of Paeonia lactiflora Pallas and screening for fungal paeoniflorin producers
Endophytic fungi from Paeonia lactiflora Pallas, which is mainly distributed in China, were characterized and screened to identify those capable of producing paeoniflorin. A total of 101 isolates obtained from the roots, stems and leaves of P. lactiflora were grouped into 16 fungal taxa based on morphological traits and internal transcribed spacers sequences, indicating that endophytic fungi of P. lactiflora are abundant and diverse. The dominant endophytic fungi were Aspergillus, Alternaria and Penicillium. More fungi were recovered from leaves than from roots and stems. The similarity index was highest between the stems and leaves (0.733), followed by the roots and leaves (0.615) and the stems and roots (0.563). Analyses of the fermentation extracts of 22 endophytic fungi by high-performance liquid chromatography and mass spectrometry revealed that three strains (R12, Alternaria tenuissima; S4, Aspergillus flavus; and R17 Penicillium commune) were able to produce paeoniflorin. Among the paeoniflorin-producing fungi, the yield of paeoniflorin from A. flavus S4 was 342.4 μg/L, and this strain could be used as a candidate for the industrial production of paeoniflorin.
Kinglet in the Poultry Court of Russia: Whole-Genome Insights into Ancestry, Genetic Variability, Selection Footprints and Candidate Genes in a Unique Local Chicken Breed Relative to Other Bantam/Dwarf Breeds
Assessing genetic diversity in various native poultry breeds, including bantam/dwarf ones, is instrumental for their conservation as genetic resources, identifying their specific genetic features, and exploring the history of their genetic divergence. Rare chicken breeds are usually carriers of peculiar phenotypic traits, including adaptations to local conditions, disease resistance, and unique performance features. Here, we report for the first time SNP-based genetic characterization of the Russian Korolyok, translated as “kinglet,” relative to five other dwarf/small breeds: Cochin Bantam, Hamburg Bantam Silver Spangled, Polish White-crested Black, Red White-tailed Dwarf and Silkie White. We estimated phenotypes, heterozygosity, inbreeding, effective population size, and runs of homozygosity (ROHs). Some breeds had higher genetic diversity and others showed elevated inbreeding rates in their genomes. With lower effective population sizes (both presently and in the past), rare breeds came from a limited number of ancestors or were under strong selection pressure over many generations. Within 22 ROHs, we identified 26 prioritized candidate genes (GRB10, RPRD1A, APOOL, EAF2, SEMA5, HACD2, GALANT1, DACH2, CHM, POF1B, HDX, SLC15A2, PDIA5, SEC22, NR2F2, ARRDC4, IGF1R, SYNM, TMEM263, etc.). Our data offer whole-genome insights into genetic variability, history, phylogeny, selective sweeps, and candidate genes of a distinct indigenous Russian chicken breed and other bantam/dwarf breeds.