Silicon is absorbed by plant roots as silicic acid. The acid moves with the transpiration stream to the shoot, and mineralizes as silica. In grasses, leaf epidermal cells called silica cells deposit silica in most of their volume by unknown mechanism. Using bioinformatics tools, we identified a previously uncharacterized protein in sorghum (Sorghum bicolor), which we named Siliplant1 (Slp1). Slp1 is a basic protein with seven repeat units rich in proline, lysine, and glutamic acid. We found Slp1 RNA in sorghum immature leaf and immature inflorescence. In leaves, transcription was highest just before the active silicification zone (ASZ). There, Slp1 was localized specifically to developing silica cells, packed inside vesicles and scattered throughout the cytoplasm or near the cell boundary. These vesicles fused with the membrane, releasing their content in the apoplastic space. A short peptide that is repeated five times in Slp1 precipitated silica in vitro at a biologically relevant silicic acid concentration. Transient overexpression of Slp1 in sorghum resulted in ectopic silica deposition in all leaf epidermal cell-types. Our results show that Slp1 precipitates silica in sorghum silica cells.Heterotopic ossification (HO) is defined as abnormal differentiation of local stromal cells of mesenchymal origin resulting in pathologic cartilage and bone matrix deposition. CCN family members are matricellular proteins that have diverse regulatory functions on cell proliferation and differentiation, including the regulation of chondrogenesis. However, little is known regarding CCN family member expression or function in HO. Here, a combination of bulk and single cell RNA sequencing defined the dynamic temporospatial pattern of CCN family member induction within a mouse model of trauma-induced HO. Among CCN family proteins, Wisp1(also known as Ccn4) was most upregulated during the evolution of HO, and Wisp1 expression corresponded with chondrogenic gene profile. Immunohistochemistry confirmed WISP1/CCN4 expression across traumatic and genetic HO mouse models, as well as in human HO samples. Transgenic Wisp1LacZ/LacZ knockin animals showed an increase in endochondral ossification in HO after trauma. Finally, the transcriptome of Wisp1 null tenocytes revealed enrichment in signaling pathways such as STAT3 and PCP signaling that may explain increased HO in the context of Wisp1 deficiency. In sum, CCN family members, and in particular Wisp1, are spatiotemporally associated with and negatively regulate trauma-induced HO formation.Importance Overdose from opioids causes nearly 50 000 deaths in the US each year. Adverse consequences from opioid use are particularly pronounced among low-income and publicly insured individuals. However, little is known about patterns of opioid prescribing among non-US-born individuals in the US. Objective To examine the association of opioid prescriptions with non-US-born status, particularly among patients clinically diagnosed with pain. Design, setting, and participants This cross-sectional analysis assessed opioid prescriptions among US-born and non-US-born adults using the 2016-2017 Medical Expenditure Panel Survey. Data were analyzed from January 1, 2016, to December 31, 2017. Main outcomes and measures Practitioner-verified binary variable for any opioid prescription, number of prescriptions received, and a count variable for number of days of prescribed medicine. Multivariable logistic and negative binomial regression adjusted for sex, age, race/ethnicity, marital status, educational level, povertyr patients with acute pain (16.7% [95% CI, 14.9%-18.4%] of US-born individuals received opioids vs 12.5% [95% CI, 9.3%-15.6%] of non-US-born individuals). Non-US-born individuals with less than 5 years of residency in the US were significantly less likely to receive a prescription for opioids than were those with longer residency after adjustment for type of pain and other confounding factors (adjusted odds ratio, 0.51; 95% CI, 0.30-0.88). Conclusions and relevance The findings suggest that non-US-born individuals, particularly those with shorter US residency, are less likely to be prescribed opioids than US-born individuals.Background Physical exercise is an essential factor in preventing and treating metabolic diseases by promoting systemic benefits throughout the body. The molecular factors involved in this process are poorly understood. Micro RNAs (miRNAs) are small non-coding RNAs that inhibit mRNA transcription. MiRNAs, which can participate in the benefits of exercise to health, circulate in plasma in extracellular particles (EP). Horses that undergo endurance racing are an excellent model to study the impact of long-duration/low intensity exercise in plasma EP miRNAs. Objectives To evaluate the effects of 160 km endurance racing on horse plasma extracellular particles and their miRNA population. Study design Cohort study. Methods We collected plasma from 5 Arabian horses during five time-points of an endurance ride. Extracellular particles were purified from plasma and characterised by electron microscopy, resistive pulse sensing (qNano), and western blotting. Small RNAs were purified from horse plasma EP, and sequencing was performed. Results Endurance racing increased EP concentration and average diameter compared to before the race. Western blotting showed a high concentration of extracellular vesicles proteins 2 h after the race, which returned to baseline 15 h after the race. MicroRNA differential expression analysis revealed increasing levels of eca-miR-486-5p during and after the race, and decreasing levels of eca-miR-9083 after the end. Conclusions This study adds new data about the variation in plasma EP concentrations after long-distance exercise and brings new insights about the roles of exercise-derived EP miRNAs during low-intensity endurance exercise.Viral infections cause life-threatening diseases in millions of people worldwide every year and there is urgent need for new effective antiviral drugs. https://www.selleckchem.com/products/s64315-mik665.html Hybridization of two chemically diverse compounds into a new bioactive effector product is a successful concept to improve the hybrid drug's properties compared to its parent compounds. In this study, (iso)quinoline-artemisinin hybrids, obtained via copper-catalyzed azide-alkyne cycloaddition (CuAAC) or organocatalyzed click reactions (in organic solvents or in the presence of water), were analyzed in vitro for the first time for their inhibitory activity against human cytomegalovirus (HCMV), as compared with their parent compounds and the reference drug ganciclovir. EC50 (HCMV) values were obtained in a range 0.22-1.20 µM, indicating highly potent antiviral properties in the absence of cytotoxic effects on normal cells (CC50 >100 µM). The most active hybrid 1 (EC50 = 0.22 µM) is 25 times more potent than its parent compound artesunic acid (EC50 = 5.41 µM) and 12 times more efficient than the standard drug ganciclovir (EC50 = 2.