2.Research on ultrafine grinding technology of improving dissolution rates of effective components in Sanjie Zhentong capsule.
Zhong-kun XU ; Jin GAO ; Jian-ping QIN ; Guang-bo CHEN ; Zhen-zhong WANG ; Wei XIAO
China Journal of Chinese Materia Medica 2015;40(10):1945-1947
The effects of ultrafine grinding on the dissolution rates of the effective components in Sanjie Zhentong capsule (SZC) were studied in this experiment. Fine and ultrafine powder of SZC intermediates were made by ordinary grinding and ultrafine grinding technology, and then granulated by wet granulation. SZC were prepared by fine powder, ultrafine powder and ultrafine granules, respectively. With resveratrol and loureirin B as investigated indexes, dissolution rates of the four intermediates in SZC were determined by cup method and HPLC. The dissolution rates of resveratrol in SZC prepared by fine powder, ultrafine powder and ultrafine granules were 26.11%, 63.27%, 67.49%, respectively; and the dissolution rates of loureirin B were 7.160%, 20.29%, 23.05%, respectively. The dissolution rate of resveratrol and loureirin B in SZC prepared by ultrafine granules was the best. D90 size of ultrafine grinding was 13.221 μm and could improve the dissolution rates of resveratrol and loureirin B in SZC.
Capsules
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chemistry
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Drugs, Chinese Herbal
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chemistry
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Particle Size
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Silicones
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chemistry
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Solubility
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Technology, Pharmaceutical
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methods
3.Determination of γ-aminobutyric acid in human plasma by LC-MS/MS and its preliminary application to a human pharmacokinetic study.
Yao CHEN ; Xiao-Jian DAI ; Jiang-Bo DU ; Kan ZHONG ; Xiao-Yan CHEN ; Da-Fang ZHONG
Acta Pharmaceutica Sinica 2014;49(11):1593-1599
A rapid, sensitive and convenient LC-MS/MS method was developed for the determination of γ-aminobutyric acid (GABA) in human plasma. d2-γ-Aminobutyric acid (d2-GABA) was synthesized as internal standard (IS). After extraction from human plasma by protein precipitation with acetonitrile, all analytes were separated on a Luna HILIC column (100 mm x 3.0 mm, 3 μm) using an isocratic mobile phase of water: acetonitrile: formic acid (20 : 80 : 0.12) with a flow rate of 0.5 mL x min(-1). Acquisition of mass spectrometric data was performed in multiple reaction monitoring mode (MRM) in positive electrospray ionization using the transitions of m/z 104 --> 69 for GABA and m/z 106 --> 71 for d2-GABA. The method was linear in the concentration range of 5.00 to 1 000 ng x mL(-1). The intra- and inter-day precisions were within 9.9%, and accuracy ranged from 99.1% to 104%, within the acceptable limit across all concentrations. The method was successfully applied to a pharmacokinetic study of GABA tablets in healthy Chinese volunteers.
Chromatography, Liquid
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Humans
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Tandem Mass Spectrometry
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gamma-Aminobutyric Acid
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blood
4.Clinical application of anterolateral femoral skin flap pedicled with high site cutaneous branches of the transverse branch of lateral circumflex femoral artery
Pei-Ji WANG ; Qi-Rong DONG ; Jian-Zhong QIN ; Kai-Long ZHOU ; Bo JIANG ; Xian-Zhong ZHANG
Chinese Journal of Microsurgery 2000;0(02):-
Objective To report the clinical effect of free transplanting for soft tissue defects pedieled with high site cutaneous branches of the transverse branch of lateral cirumflex femoral artery.Methods Cu- taneous branches of the descending branch of lateral circumflex femoral artery were found small or abscent in 7 patients.The anterolateral femoral skin flap was pedicled with high site cutaneous branches of the transverse branch to repair the soft tissue defects of the arm,hand,leg and foot,rather than with the descending ones. The size of the flap ranged from 15 cm?6 cm to 28 cm?13 cm,with part muscle valve,iliotibal tract and lat- eral femoral cutaneous nerve.The fractures were performed with internal or external fixation.Results All of the anterolateral femoral skin flap survived well postoperatively in the 7 cases and had good appearance and sensation at one stage.The function of the repaired extremities recovered well.Conclusion The anterolat- eral femoral skin flap pedicled with high site cutaneous branches of the transuvrse branch of lateral circumflex femoral artery has many advantages of good blood supply and large size.The flap was secluding,and can be taken with some muscle and lateral femoral cutaneous nerve.When cutaneous branches of the descending branch of lateral circumflex femoral artery is small or abscent,the anterolateral femoral skin flap with high site cutaneous branches of the transverse branch of lateral circumflex femoral artery is an optimal alternative.
5.High intensity focused ultrasound combined with dendritic cell and cytokine-induced killer cell immunotherapy for treating pancreatic cancer
Guocheng ZHONG ; Cong ZHANG ; Chongfu RAN ; Xiaoyu ZHANG ; Yongzhong GUI ; Yi SUN ; Jian CHEN ; Bo ZHU
Chinese Journal of Physical Medicine and Rehabilitation 2012;34(9):651-655
Objective To elucidate the immunologic mechanism and clinical effect of high intensity focused ultrasound (HIFU) combined with dendritic cell and cytokine induced killer cell (DC-CIK) immunotherapy on patients with pancreatic cancer.Methods Seventy-two pancreatic cancer patients were divided randomly into 2 equal groups,one treated with HIFU only the other treated with HIFU and DC-CIK immunotherapy.Ultrasound imaging and a variety of immunological indexes were recorded before and after treatment and the clinical effects in the two groups were compared.Moreover,autogenous tumor cells were isolated from the combination therapy group and the killing activity of DC-CIK which loaded tumor antigen processed by HIFU on autogenous tumor cells was observed.Results Tumor antigen processed by HIFU can improve the killing activity of DC-CIK on autogenous tumor cells.After treatment,the immunological indexes,of all patients were better than before treatment.(58.26 ± 17.97 versus 52.15 ± 14.22 pg/ml with IL-12 22.14 ± 6.39 versus 17.36 ± 5.73 ng/ml with HSP70 and 0.94 ± O.34 versus 1.32 ± O.61 ng/ml with TGF-β,P < 0.05 ) ; The combination group was significantly better than the HIFU group with regard to the average scores of quality of life (75.89 ± 19.65 versus 67.22 ± 16.34,P<0.05),pain (3.15 ±0.82 versus 3.59 ± 1.04,P <0.05),tumor markers (107.55 ±27.58 versus 123.63 ±34.12 U/ml) and survival time (18.92±6.47 versus 13.36 ±5.78 mos).Conclusion HIFU can improve the immunologic status and anti-tumor response in patients with pancreatic cancer.HIFU combined with DC-CIK has good synergistic therapeutic effect for treating pancreatic cancer.
6.Diagnosis and surgery of primary tracheal neoplasms in children.
Da-bo LIU ; Jian-wen ZHONG ; Li-feng ZHOU
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2009;44(4):337-338
Bronchoscopy
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Child
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Child, Preschool
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Female
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Humans
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Infant
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Male
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Retrospective Studies
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Tracheal Neoplasms
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diagnosis
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surgery
7.Effect of different treatment on endophytic bacterial communities in continuous cropping of Chrysanthemum morifoliu.
San-meil PENG ; Bo-lin WANG ; Jian-zhong XU ; Zhi-shan DING ; Xiao-feng YUAN
China Journal of Chinese Materia Medica 2014;39(24):4763-4768
To reveal the effect of rotation cropping and bacterial manure on the growth of Chrysanthemum morifolium and screen the beneficial endophytic, the diversity of endophytic and dominant genera of different treatment groups were analyzed. Four different treatments were continuous cropping, rotation, self-made organic fertilizer and commercially available fertilizer, respectively. Endophytic bacterial diversity and dominant genera in different organs were examined using Terminal Restriction Fragment Length Polymorphism (T-RFLP). The results showed that enzyme Hae III was more appropriate than enzyme Hinfl because the number of TRFs digested by enzyme Hae III was more than that of enzyme Hinfl. In comparison of diversity, the endophytic bacterial communities' diversity index in group of cropping rotation and fertilizer was higher than that of continuous cropping which indicated that the addition of exogenous microorganism in soil could increase the diversity of plant endophyte. 18 dominant species were selected, including 3 kinds of Firmicutes, 4 kinds of Actinomycetes and 11 kinds of Proteobacteria. The results of dominant species comparison showed that the number of dominant species in continuous cropping of Ch. morifolium was significantly less than that of the rotation group. Some dominant bacteria in rotation group and fertilizer group such as Arthrobacter, Streptomyces, Streptomyces, Flavobacterium and Mycobacterium were not found in the continuous cropping of Ch. mortfolium group. Dominant species of fertilizer treatment group was similar with the rotation group, and the continuous cropping group's dominant species was more abundant. It indicates that these bacteria may be able to mitigate hindrance in continuous cropping, especially the Flavobacterium which can decompose the pathogenic fungi is worthy of further attention. Compared with leaves, there are more dominant species in roots and stems. The diversity of edophytic bacterial communities in continuous cropping of Ch. morifolium stays below than that in the rotation of Ch. morifolium, and fertilizer treatment can increase the diversity of continuous cropping so that it could mitigate hindrance in continuous cropping.
Actinobacteria
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physiology
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Agriculture
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Biodiversity
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Chrysanthemum
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growth & development
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microbiology
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Deoxyribonucleases, Type II Site-Specific
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Endophytes
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Fertilizers
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Gram-Positive Bacteria
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physiology
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Phylogeny
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Plant Leaves
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Plant Roots
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microbiology
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Polymorphism, Restriction Fragment Length
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Proteobacteria
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physiology
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RNA, Ribosomal, 16S
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chemistry
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genetics
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Soil
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Soil Microbiology
8.Treatment of obstructive sleep apnea-hypopnea with refractory epilepsy in children.
Da-bo LIU ; Shu-yao QIU ; Jian-wen ZHONG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2009;44(5):425-426
Child
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Child, Preschool
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Epilepsy
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complications
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diagnosis
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surgery
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Female
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Humans
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Male
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Sleep Apnea, Obstructive
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complications
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diagnosis
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surgery