Jing Li

Guangzhou University of Traditional Chinese Medicine, Shengcheng, Guangdong, China

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Publications (10)23.33 Total impact

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    ABSTRACT: Background: House dust mites (HDMs) are the major sources of indoor allergens which induce asthma, dermatitis, rhinitis, and some other allergic diseases. Close to 30 sub-allergens have been identified. Methods: Through analyzing the full genome sequence of dust mite, a new allergen whose primary structure belongs to the heat shock protein family was identified. The sequence of this allergen was determined by cDNA cloning. The allergenicity was assayed by skin prick test, Western-blot and enzyme-linked immunosorbent assay (ELISA). Results: r-Der f 28 bound to serum IgE from mite allergic patients. Positive responses to r-Der f 28 were shown in 11.5% by skin prick testing from 26 DM-allergic patients. Airway hyperresponsiveness, serum specific IgE and IL-4 were significantly increased in allergic asthma mouse model sensitized to r-Der f 28. Conclusions: Der f 28 is a new subtype of allergen in dermatophagoides farinae.
    No preview · Article · Dec 2015 · Journal of Thoracic Disease
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    ABSTRACT: To explore the effect of Compound Tufuling Granules (, CTG) on regulating glucose transporter 9 (GLUT9) expression in the kidney to influence the uric acid excretion by the kidney and serum uric acid (SUA) level in hyperuricemia mice. Sixty Kunming male mice were randomly divided into the control group, model group, benzbromarone group, and CTG high-, middle- and low-dose groups. The yeast extract and uricase inhibition method were used to build hyperuricemia model, and the corresponding drugs were administrated on the 7th day. On the 21st day the 24-h urine was collected, on the 22nd day the blood was collected, the SUA level was detected by uricase colorimetry, and the mRNA and protein expressions of GLUT9 were detected by quantitative real-time polymerase chain reaction and Western blot, respectively. Compared with the model group, the levels of SUA and the mRNA and protein expressions of GLUT9 were significantly decreased, and the fraction excretion of uric acid (FEUA) was significantly increased in the CTG groups and benzbromarone group (all P<0.05). There was no significant difference in the above indicators between the CTG high-dose group and benzbromarone group (P>0.05). SUA is positively related to the GLUT9 mRNA and protein expressions in the kidney (P<0.05 or P<0.01). CTG can significantly reduce the SUA and increase the FEUA. In addition, CTG can effectively inhibit the mRNA and protein expressions of GLUT9 in the kidney of hyperuricemia mice to inhibit the uric acid re-absorption, promote uric acid excretion and reduce SUA.
    No preview · Article · Apr 2015 · Chinese Journal of Integrative Medicine
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    ABSTRACT: Epithelial barrier integrity is critical to maintain the homeostasis in the body. The regulatory mechanism of the epithelial barrier function has not been fully understood. This study aims to elucidate the role of the TWIK-related potassium channel-1 (Trek1) in the regulation of the epithelial barrier function of the nasal mucosa. In this study, the levels of Trek1 were assessed by real time RT-PCR and Western blotting. The epithelial barrier function of the rat nasal epithelia was evaluated by the Ussing chamber system. The results showed that Trek1 was detected in the human and rat nasal epithelia, which were significantly lower in patients and rats with allergic rhinitis than that in healthy controls. Exposure to the signature T helper 2 cytokine, interleukin (IL)-4, markedly suppressed the expression of Trek1 in the nasal mucosa via up regulating the expression of the histone deacetylase (HDAC)1. The IL-4-induced rat nasal epithelial barrier dysfunction could be blocked by HDAC1 inhibitor (Trichostatin A), or sodium butyrate, or administration of Clostridium Butyricum. We conclude that Trek1 is critical to maintain the nasal epithelial barrier function.
    Preview · Article · Mar 2015 · Scientific Reports
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    ABSTRACT: Xie-Zhuo-Chu-Bi-Fang (XZCBF) is an empirical formula developed based on the principles of traditional Chinese medicine, for the therapeutic purpose of treating hyperuricemia. XZCBF has been clinically utilized in the Department of Traditional Chinese Medicine at General Hospital of Guangzhou Military Command of PLA for many years and has exhibited favorable efficacy. To evaluate the effects of XZCBF on the expression of uric acid transporter 1 (URAT1) and miR-34a in hyperuricemic mice and to determine, the correlation between the two expression levels. A hyperuricemic animal model was created by administering adenine and allantoxanic acid potassium salt to mice. The blood uric acid levels were measured in these model mice after treatment with XZCBF for 15 days. The potential targets of miR-34a were screened. The expression levels of miR-34a and URAT1 in the renal tissues collected from the model mice were determined by quantitative real-time polymerase chain reaction (qRT-PCR) analysis; and their correlation was further established by immunohistochemistry and in situ hybridization. The uric acid levels in the model mice were significantly higher than those in the blank controls (P<0.05). These levels were significantly lower in the three groups receiving different doses of XZCBF (P<0.05), which was, in agreement with the downregulation of URAT1 and the upregulation of miR-34a in each group. The mRNA expression level of URAT1 was positively correlated with the concentration of uric acid but, negatively correlated with the expression level of miR-34a. The ability of XZCBF to facilitate the excretion of uric acid and to lower its level in the model group was mediated by the upregulation of miR-34a and the inhibition of URAT1 mRNA expression, which suggests that XZCBF could be an option for the treatment of hyperuricemia in mice. Copyright © 2014. Published by Elsevier Ireland Ltd.
    Preview · Article · Dec 2014 · Journal of Ethnopharmacology
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    ABSTRACT: This study characterized the acaricidal activity of constituents of patchouli oil extracted from (Pogostemon cablin (Blanco) BENTH) against the house dust mite, Dermatophagoides farinae. A new compound, 2-(1,3-dihydroxy-but-2-enylidene)-6-methyl-3-oxo-heptanoic acid (DHEMH), was isolated from patchouli oil and characterized by (1)H-NMR, (13)C-NMR, LC-MS and elemental analysis (EA). This active component was identified as the hydrolysate of pogostone. Fifteen other constituents found in patchouli oil were also identified by GC-MS, including patchouli alcohol and pogostone. LD(50) studies carried out over 24 h using contact toxicity tests identified DHEMH as the most toxic compound to D. farinae (2.04 μg/cm(2)), followed by patchouli oil (6.11 μg/cm(2)), benzyl benzoate (BP) (9.31 μg/cm(2)) and dibutyl phthalate (DBP) (58.52 μg/cm(2)). In vapor phase toxicity tests, all of these compounds were more effective in closed than open containers, indicating that the most efficient mode of delivery for these compounds is the vapor phase. These results indicate that DHEMH and patchouli oil merit further study as potential agents for the control of D. farinae.
    No preview · Article · Aug 2012 · Chemical & pharmaceutical bulletin
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    ABSTRACT: In our effort to develop novel plant-derived acaricides, we examined the contact and fumigant toxicity of Asarum heterotropoides (Asarum sieboldii Miquel) essential oil constituents to the house dust mite Dermatophagoides farinae (Acari: Pyroglyphidae). Ten constituents, including methyl eugenol (relative amount 42.18 %), were identified by gas chromatography-mass spectroscopy (GC-MS) in the A. sieboldii Miq. essential oil. In contact toxicity tests, methyl eugenol (4.2 μg/cm(2), 24 h LD50) was most toxic to D. farinae, followed by benzyl benzoate (9.1 μg/cm(2)), A. sieboldii Miq. essential oil (37.7 μg/cm(2)), and dibutyl phthalate (DBP 57.9 μg/cm(2)). The potency of methyl eugenol and A. sieboldii Miq. essential oil was higher than benzyl benzoate and DBP, with mortalities of 100, 100, 94.6, and 13.2 %, respectively, after 2.5 h of exposure. In the vapor phase mortality bioassay, methyl eugenol and A. sieboldii Miq. essential oil resulted in 100 % mortality in closed containers after 24-h exposure, but only 4.7 and 7.9 %, respectively, in open containers, indicating that the toxicity in these tests was largely due to the vapor phase. Methyl eugenol and A. sieboldii Miq. essential oil merit further study as potential D. farinae control compounds.
    No preview · Article · Jul 2012 · Parasitology Research
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    ABSTRACT: Early diagnosis and treatment is known to improve prognosis for nasopharyngeal carcinoma (NPC). The study determined the specific peptide profiles by comparing the serum differences between NPC patients and healthy controls, and provided the basis for the diagnostic model and identification of specific biomarkers of NPC. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) can be used to detect the molecular mass of peptides. Mass spectra of peptides were generated after extracting and purification of 40 NPC samples in the training set, 21 in the single center validation set and 99 in the multicenter validation set using weak cationic-exchanger magnetic beads. The spectra were analyzed statistically using FlexAnalysis™ and ClinProt™ bioinformatics software. The four most significant peaks were selected out to train a genetic algorithm model to diagnose NPC. The diagnostic sensitivity and specificity were 100% and 100% in the training set, 90.5% and 88.9% in the single center validation set, 91.9% and 83.3% in the multicenter validation set, and the false positive rate (FPR) and false negative rate (FNR) were obviously lower in the NPC group (FPR, 16.7%; FNR, 8.1%) than in the other cancer group (FPR, 39%; FNR, 61%), respectively. So, the diagnostic model including four peptides can be suitable for NPC but not for other cancers. FGA peptide fragments identified may serve as tumor-associated biomarkers for NPC.
    No preview · Article · Jul 2012 · Journal of Cellular Biochemistry
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    ABSTRACT: This paper assessed the potential of traditional Chinese medicine (TCM) preparations for using as environmentally acceptable and alternative commercial acaricides. 22 kinds of TCM, which contained abundant essential oils and showed insecticidal effects, were collected. Samples extracted with petroleum ether, ethyl acetate and methanol were tested against house dust mites Dermatophagoides farinae and their toxicity assessed. The results showed that 3 TCM of Cinnamonum cassia, Eugenia caryophyllata and Pogostemon cablin have higher activity, and the parallel tests showed that the petroleum ether extract had higher activities (0.0046 mg/cm2, 0.005 mg/cm2 and 0.006 mg/cm2 respectively, 24 h, LD50) than the extracts of ethyl acetate and methanol. The acaricidal activity of the ethyl acetate extracts from C. cassia, P. cablin and Asarum sieboldii (0.00144 mg/cm2, 0.00347 mg/cm2 and 0.05521 mg/cm2 respectively, 24 h, LD50) were almost comparable to that of benzyl benzoate and dibutyl phthalate. However, the methanolic extracts of were less effective. CONCLUSIONS. This study shows the use of extracts with petroleum ether of C. cassia, P. cablin and E. caryophyllata as eco-friendly biodegradable agents for the control of the house dust mite.
    No preview · Article · May 2010 · Parasitology
  • Jing Li · Hai-Qiang Wu · Zhi-Gang Liu
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    ABSTRACT: Volatile oil from the clove bud was extracted by petroleum ether using Soxhlet Extractor. The acaricidal activity was examined using direct contact and vapour phase toxicity bioassays. In a filter paper contact toxicity bio-assay, at 2.5 h after treatment, clove bud oil at a dose of 12.20 microg/cm2 killed all dust mites. As judged by 24-h LD50 values, potent fumigant action was observed with clove bud oil (12.20 microg/cm2), showing an adequate acaricidal activity against indoor Dermatophagoides farinae.
    No preview · Article · Dec 2009 · Zhongguo ji sheng chong xue yu ji sheng chong bing za zhi = Chinese journal of parasitology & parasitic diseases
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    ABSTRACT: Local nasal immunotherapy has been reported to be effective for airway allergic diseases. A biodegradable material, chitosan (CS), has been reported to be safe and effective in allergen delivery. In this study, we tested immunotherapeutic efficiency by intranasal administration of Der f entrapped in CS microparticles to sensitized mice. BALB/c mice were sensitized intraperitoneally with Der f extract absorbed to alum, followed by intranasal treatment with PBS, CS, Der f or Der f-CS nano-vaccine for 6 weeks. The mice were subsequently challenged intranasally with Der f extract for 1 week, and we analyzed their clinical symptoms, antibody expression levels, cytokine levels, T cell proliferation and regulatory T cell numbers. Mice treated with intranasal Der f-CS nano-vaccine prior to challenge displayed an alleviated spectrum of symptoms including airway hyper-reactivity, lung inflammation and mucus production and had fewer eosinophilic cells in bronchoalveolar lavage fluid (BALF). Interestingly, the cytokine levels in Der f-specific IgE were reduced, but IgA in serum and BALF was increased. We also observed that IL-4 was reduced and IFN-gamma and IL-10 were increased among splenocytes and in BALF, which inhibits Der f-specific T-cell proliferation in splenocytes and increases regulatory T cells in the spleen. However, the mice challenged without intranasal Der f or Der f-CS vaccine treatment developed allergic asthma. Our results illustrate that intranasal administration of Der f-CS nano-vaccine plays roles in immunologic protection in murine allergic asthma by inducing regulatory T cells and Th1-type reaction.
    No preview · Article · Jul 2009 · International Archives of Allergy and Immunology

Publication Stats

48 Citations
23.33 Total Impact Points


  • 2015
    • Guangzhou University of Traditional Chinese Medicine
      Shengcheng, Guangdong, China
  • 2009-2015
    • Shenzhen University
      • College of Life Sciences
      Bao'an, Guangdong, China
  • 2014
    • Guangzhou University of Chinese Medicine
      Shengcheng, Guangdong, China
  • 2012
    • Wuhan General Hospital of Guangzhou Military Command
      Wu-han-shih, Hubei, China