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  • Author: Ming-Liang Chen x
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Abstract

C18H17N3O6Zn, triclinic, P1̅ (no. 2), a = 10.0780(5) Å, b = 10.1678(5) Å, c = 10.3591(5) Å, α = 83.119(1)°, β = 81.178(2)°, γ = 64.753(1)°, V = 947.0 Å3, Z = 2, R gt (F) = 0.0285, wR ref (F 2 ) = 0.1213, T = 296 K.

Abstract

C12H12Cl2N2Zn, monoclinic, P21/c (no. 14), a = 8.615(2) Å, b = 10.589(2) Å, c = 16.525(2) Å, β = 116.598(6)°, V = 1347.9 Å3, Z = 4, R gt (F) = 0.0247, wR ref (F 2 ) = 0.0697, T = 298 K.

Abstract

This study investigates the ordering restriction of two relative clauses modifying the same head noun phrase in Chinese. We use both retrospective and corpus data to challenge Larson and Takahashi's (2007) account of the ordering of such multiple relative clauses in Chinese in terms of the distinction of individual-level and stage-level relative clauses. Instead, we offer an account based on the discourse function of the multiple relative clauses in Chinese. Specifically, we argue that relative clauses that serve to provide grounding information for the head noun tend to precede other types of relative clauses. The proposed ordering restriction is shown to account for the ordering of multiple relative clauses in both Chinese and English.

Abstract

Word order variation in Mandarin Chinese results in two constructions consisting of a noun phrase (NP), a cluster of a demonstrative and a classifier (DM), and a relative clause (RC): the OMN with the RC+DM+NP order and the IMN with DM+RC+NP order. This study used corpus data to show correlational patterns of constructional choices. Specifically, OMN is associated with new and inanimate NPs serving the grammatical role of object in the relative clause that serves the discourse function of identification. By contrast, for IMN, the head NP tends to carry given information, tends to be an animate entity, tends to serve the grammatical role of subject in the relative clause, and tends to have an RC that serves the discourse function of characterization. We suggest that the usage patterns can be interpreted in terms of the cognitive and communicative principles of relevance (Sperber and Wilson 1995).

Abstract

Background: Although some studies in the southeast part of Guizhou Province have suggested that Miaoyao Fanggan Sachets (MFS) prevent influenza, little is known about its influence on immune systems. Influenza virus mainly infects immune-compromised individuals. The effects of MFS have mainly been recognized in clinical practice. However, there have been relatively few studies on its biological mechanism. Here we investigated whether MFS was able to affect the mucosal immunization and the activation of alveolar macrophages (AM), CD4+and CD8+ T-cells in vivo.

Methods: Eighty Kunming male mice were treated with MFS continuously or intermittently with Yu-Ping-Feng powder (YPF-P) (positive control group) or with normal saline (NS) (control group) for 4 weeks, respectively. Mice treated with MFS were further divided into the continuous inhalation group (12 h daily/4 weeks) and the discontinuous inhalation group (1 h, three times a day for 4 weeks). Mice in both groups were placed under 0.5 m3 masks which had four ventilation holes (10×15 cm) containing 40 g MFS. Positive control mice were orally treated with YPF-P 0.2 mg/10 g/day once a day for 4 weeks. Control mice were orally treated with equal volumes of NS once a day for 4 weeks. MFS was replaced every 6 days. Administration of YPF-P was used as a positive control since it has been used as an established Traditional Chinese Medicine (TCM) treatment before. After 4 weeks, mice in all experimental groups were sacrificed. IgA and IgG1 in lung and blood serum were detected by Western blot and enzyme-linked immuno sorbent assay (ELISA). The expression of alveolar macrophages (AM) in mice was analyzed by immunochemistry test based on CD68+staining. Blood samples were collected in which CD4+and CD8+T-cells were analyzed by flow cytometry.

Results: Mice continuously and intermittently inhaling MFS showed a moderate increase in IgA and IgG1 protein levels compared with mice in the control groups. There was also a slightly significant increase in the number of AM in the continuous inhalation group compared with mice in the control groups (p<0.05). Furthermore, compared with controls, there was also a slightly significant increase in the number and percentage of CD4+and CD8+T-cells in both the continuous inhalation group and the discontinuous inhalation group (p<0.05).

Conclusions: MFS was able to up-regulate the protein levels of sIgA and IgG1. Meanwhile, MFS could activate AM, CD4+and CD8+T-cells in mice. Our data have, for the first time, demonstrated that the protection against influenza by MFS is partly through activation of the innate and adaptive cell-mediated immune responses, indicating MFS as a potential new immune-modulatory agent for respiratory tract infectious disease.

Abstract

An efficient one-pot synthesis of polyhydroacridines and polyhydroquinolines through the Hantzsch reaction in deep eutectic solvent choline chloride/urea (1:2) has been developed. Good to excellent yields, broad substrate compatibility as well as the reusability of the solvent are the major advantages of the present protocol.

Abstract

C8H13F6N2O2P, monoclinic, P21/c (no. 14), a = 9.0228(12) Å, b = 13.6501(18) Å, c = 11.2771(15) Å, β = 112.904(1)°, V = 1279.4(3) Å3, Z = 4, R gt(F) = 0.0773, wR ref(F 2) = 0.2385, T = 296(2) K.

Abstract

[C9H13F6N2O2P], monoclinic, P21/c (no. 14), a = 6.5994(13) Å, b = 10.754(2) Å, c = 19.754(4) Å, β = 96.267(2)°, V = 1393.6(5) Å3, Z = 4, R gt(F) = 0.0674, wR ref(F 2) = 0.2124, T = 296(2) K.