Beneficial effects of the fructus Sophorae extract on experimentally induced osteoporosis in New Zealand white rabbits

Sophora japonica is a source of several flavonol, flavone and isoflavone glycosides that are reported to positively affect menopausal symptoms including osteoporotic complications. In the present study fructus Sophorae extract (FSE) was administered orally for three months at a dose of 200 mg kg–1 in ovariectomized (OVX) New Zealand rabbits. 3D computed tomography scans and histopathological images revealed microstructural disturbances in the bones of the castrated animals. FSE recovered most of the affected parameters in bones in a manner similar to zoledronic acid (ZA) used as a positive control. The aglycones of the main active compounds of FSE, daidzin, and genistin, were docked into the alpha and beta estrogen receptors and stable complexes were found. The findings of this study provide an insight into the effects of FSE on bone tissue loss and suggest that it could be further developed as a potential candidate for the prevention of postmenopausal osteoporotic complications.

Bordering on Asian Paintings: Dye Analysis of Textile Borders and Mount Elements to Complement Research on Asian Pictorial Art

Mount components and textile borders represent important elements of Asian paintings. However, they are often side-lined or not considered an integral part of the original piece, as they may be later additions or may have been replaced during historic conservation or mounting interventions. Nevertheless, evidence is sometimes present that textile borders are contemporaneous to the production of the paintings they frame or, in the case of paintings found in archaeological contexts, to the time of deposition. Even when not contemporaneous with the paintings, the mount textiles are often of significant historic interest in themselves, showing a range of complex textile techniques and materials, and highlighting the re-use of fabrics. In all these cases, the study and reconstruction of the original colours of the borders enable further understanding of the holistic visual impact originally intended for the composition, as well as of the role of colour itself, which was used to emphasise, complement or contrast important pictorial themes or motifs in the paintings. Furthermore, the identification of dyes and dyeing techniques has the potential to support the production date and provenance of the paintings. In this study, the textile borders and some additional mounting elements of six paintings (late 9th–10th century CE) from the Library Cave, Mogao Grottoes, Dunhuang, China, one rare Korean portrait painting dated 1789 CE, and two Tibetan thangkas (18th century) were investigated with the aim to identify the dyes present. Fibre optic reflectance spectroscopy (FORS) was used to obtain information non-invasively and, when sampling was possible, high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) was used to obtain molecular identification of the dyestuffs employed in their production. Typical Asian dyes, such as gromwell (Lithospermum erythrorhizon), sappanwood (Biancaea sappan), safflower (Carthamus tinctorius), turmeric (Curcuma longa) and pagoda tree flower buds (Sophora japonica), were identified. Some of the dyeing techniques were commensurate with the geographical and temporal provenance assigned to these pieces. Considerations about fading and discolouration of the dyes enabled valuable additional information to be obtained that complements the evidence gleaned from the study of the paintings and informs conservators and curators on best practices in the preservation and display of these precious and delicate artworks.

Drought, Salinity, and Low Nitrogen Differentially Affect the Growth and Nitrogen Metabolism of Sophora japonica (L.) in a Semi-Hydroponic Phenotyping Platform

Abiotic stresses, such as salinity, drought, and nutrient deficiency adversely affect nitrogen (N) uptake and assimilation in plants. However, the regulation of N metabolism and N pathway genes in Sophora japonica under abiotic stresses is unclear. Sophora japonica seedlings were subjected to drought (5% polyethylene glycol 6,000), salinity (75mM NaCl), or low N (0.01mM NH4NO3) for 3weeks in a semi-hydroponic phenotyping platform. Salinity and low N negatively affected plant growth, while drought promoted root growth and inhibited aboveground growth. The NH4+/NO3− ratio increased under all three treatments with the exception of a reduction in leaves under salinity. Drought significantly increased leaf NO2− concentrations. Nitrate reductase (NR) activity was unaltered or increased under stresses with the exception of a reduction in leaves under salinity. Drought enhanced ammonium assimilation with increased glutamate synthase (GOGAT) activity, although glutamine synthetase (GS) activity remained unchanged, whereas salinity and low N inhibited ammonium assimilation with decreased GS activity under salt stress and decreased GOGAT activity under low N treatment. Glutamate dehydrogenase (GDH) activity also changed dramatically under different stresses. Additionally, expression changes of genes involved in N reduction and assimilation were generally consistent with related enzyme activities. In roots, ammonium transporters, especially SjAMT1.1 and SjAMT2.1a, showed higher transcription under all three stresses; however, most nitrate transporters (NRTs) were upregulated under salinity but unchanged under drought. SjNRT2.4, SjNRT2.5, and SjNRT3.1 were highly induced by low N. These results indicate that N uptake and metabolism processes respond differently to drought, salinity, and low N conditions in S. japonica seedlings, possibly playing key roles in plant resistance to environmental stress.

Effects of the Phytochemical Combination PB123 on Nrf2 Activation, Gene Expression, and the Cholesterol Pathway in HepG2 Cells

There has been a long history of human usage of the biologically-active phytochemicals in Salvia rosmarinus, Zingiber officinale, and Sophora japonica for health purposes, and we recently reported on a combination of those plant materials as the PB123 dietary supplement. In the present work we extended those studies to evaluate activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) transcription factor and differential gene expression in cultured HepG2 (hepatocellular carcinoma) cells treated with PB123. We determined transcriptome changes using mRNA-seq methods, and analyzed the affected pathways using Ingenuity Pathway Analysis and BioJupies, indicating that primary effects included increasing the Nrf2 pathway and decreasing the cholesterol biosynthesis pathway. Pretreatment of cultured HepG2 cells with PB123 upregulated Nrf2-dependent cytoprotective genes and increased cellular defenses against cumene hydroperoxide-induced oxidative stress. In contrast, pretreatment of cultured HepG2 cells with PB123 downregulated cholesterol biosynthesis genes and decreased cellular cholesterol levels. These findings support the possible beneficial effects of PB123 as a healthspan-promoting dietary supplement.

Comparative analysis of the dust retention capacity and leaf microstructure of 11 Sophora japonica clones

We used fresh leaves of Sophora japonica L. variety ‘Qingyun 1’ (A0) and 10 superior clones of the same species (A1–A10) to explore leaf morphological characteristics and total particle retention per unit leaf area under natural and artificial simulated dust deposition treatments. Our objectives were to explore the relationship between the two methods and to assess particle size distribution, X-ray fluorescence (XRF) heavy metal content, and scanning electron and atomic force microscopy (SEM and AFM) characteristics of leaf surface microstructure. Using the membership function method, we evaluated the dust retention capacity of each clone based on the mean degree of membership of its dust retention index. Using correlation analysis, we selected leaf morphological and SEM and AFM indices related significantly to dust retention capacity. Sophora japonica showed excellent overall dust retention capacity, although this capacity differed among clones. A5 had the strongest overall retention capacity, A2 had the strongest retention capacity for PM2.5, A9 had the strongest retention capacity for PM2.5–10, A0 had the strongest retention capacity for PM>10, and A2 had the strongest specific surface area (SSA) and heavy metal adsorption capacity. Overall, A1 had the strongest comprehensive dust retention ability, A5 was intermediate, and A7 had the weakest capacity. Certain leaf morphological and SEM and AFM characteristic indices correlated significantly with the dust retention capacity.

Experimental Evidence and Network Pharmacology-Based Analysis Revealing the Effects and Mechanism of Branches of Sophora Japonica (L.) in Anti-Myocardial Ischemia

Background: Huai-Zhi (HZ), the fresh or dried branches of Sophora japonica (L.) are commonly used to treat several diseases such as heartache, red eyes, and metrorrhagia. The present study aimed to explore the potential mechanisms effects of HZ anti-myocardial ischemia by experiment and integrating network pharmacology. Methods: Isoproterenol was used in this study to establish the myocardial ischemia model in mice. Different extraction processes were used to obtain different HZ extracts with a screening of their anti-myocardial ischemia activities. Furthermore, the network pharmacology methods together with molecular docking were utilized to explore the active components, targets, and mechanism of anti-myocardial ischemia of HZ. Results: The ethyl acetate extract of HZ (HZ-EtOAc) significantly reduced the ST-segment elevation of mice in the preliminary test. The 95% ethanol fraction of the ethyl acetate extract of HZ (HZ-EtOAc-95) significantly reduced the ST-segment elevation, reduced the creatine kinase (CK) activity, reduced the levels of creatine kinase isoenzyme(CK-MB) and cardiac troponin I (cTnI) in serum, increased superoxide dismutase (SOD) activity, and decreased malondialdehyde (MDA) levels in the myocardial tissues. Moreover, these results indicated that HZ-EtOAc extract in mice ameliorates myocardial tissue injury. Additionally, network pharmacology demonstrated that nine active components and 177 protein targets are related to the anti-myocardial ischemic effects of HZ. Its underlying mechanism might be involved in multiple signaling pathways, including mitogen-activated protein kinase, Toll-like receptor, and PI3K-Akt. Conclusion: This study used pharmacological experiments to determine the active site of HZ, and explored its potential mechanism in conjunction with network pharmacology.

Actualisation des connaissances sur l’abeille Megachile sculpturalis SMITH, 1853 en France et en Europe (Hymenoptera : Megachilidae)

Update of knowledge on the bee Megachile sculpturalis SMITH, 1853 in France and Europe (Hymenoptera: Megachilidae). - Megachile sculpturalis is a bee native to eastern Asia that is now also present in North America and Europe. This article follows the first synthesis on the ecology and geographical distribution in Europe of this species published in this same journal in 2018 and updates their knowledge. Megachile sculpturalis has been observed in 13 European countries. Its range now extends from the French Atlantic coast in the west to the Crimean Peninsula in the east. It has also been recorded on two Mediterranean islands, Elba (Italy) and Mallorca (Spain). In France, between 2008 and 2020, it was observed in 259 communes in 46 departments. The most northerly French observation was made in 2020 near Reims in the Marne department. Concerning feeding behaviour, new pollen analyses corroborate the results of previous ones which suggested a polylectic diet with a marked preference for shrubs of Asian origin (especially Sophora japonica and Ligustrum sp.). Regarding nesting behaviour, M. sculpturalis makes extensive use of bee hotels. However, a range of diameters (holes in logs or sections of plant stems) between 4 and 8 mm is suitable for the main native species likely to nest in the hotels, while limiting the establishment of M. sculpturalis. New observations have confirmed the tendency of M. sculpturalis to empty the nests of other species in order to establish its own larval cells. In addition, in Switzerland, a female was observed killing a bee of the genus Heriades. Such events, if frequent, could have negative impacts on native bees, but data are currently insufficient to quantify these impacts on populations.