1.Effects of Hypoxia on Hippocampal and Cortical Evoked Potentials after Sciatic Nerve Stimulation in Rats
Journal of Third Military Medical University 1984;0(01):-
0.05). When the decreases of HEP amplitude and heart rate were compared, the former was significantly larger than the later (P
2.A new sesquiterpene lactone from the roots of Lasianthus acuminatissimus
Bin LI ; Dongming ZHANG ; Yongming LUO
Acta Pharmaceutica Sinica 2006;41(5):426-430
Aim To study the active constituents for the treatment of rheumatoid arthritis from the ethyl acetate extracts of the roots of Lasianthus acuminatissimus Merr. Methods Various chromatographic techniques were used to separate and purify the constituents. Their structures were established on the basis of 1D, 2D NMR and HRMS spectroscopic analyses and their preliminary evaluation of anti-inflammation effect on the release of β-glucuronidase was carried out. Results Eight compounds were isolated and identified as lasianthuslactone A ( 1 ) , codonolactone ( 2 ), 2, 5-dimethoxy-1,4-benzoquinone ( 3 ) ,uncargenin A (4) , nonadecyl alcohol (5) , 13-docosenoic acid (6) , tetracosanoic acid (7) and β-sitosterol (8). Compound 3 showed a significant inhibitory effect on release of β-glucuronidase rat polymorphous nuclear leukocytes activated by platelet activating factor (PAF). Conclusion Compound 1is a new one, the others were isolated from the plant for the first time and 3 is one of active antiinflammation compound in the plant.
3.MRI diagnostic criteria for ischiofemoral impingement syndrome
Dezhou ZHANG ; Dongming LI ; Xuebing YI ; Hua LUO
Chinese Journal of Tissue Engineering Research 2017;21(15):2406-2409
BACKGROUND: Ischiofemoral impingement (IFI) syndrome has attracted more and more attention, but there is little report on IFI because of its low incidence. Moreover, its imaging characters have not yet been fully understood.OBJECTIVE: To discuss the MRI diagnostic criteria for IFI, thus understanding the imaging characters of IFI revealed on MRI.METHODS: Sixteen cases (21 hips) of suspected IFI were selected as experimental group, and 25 healthy volunteers as control group. The bilateral ischiofemoral space (IFS, the shortest distance between the ischial tuberosity and lesser trochanter of femur) and quadratus femoris space (QFS, distance between the lesser trochanter of femur and hamstring tendon insertion) were measured on MRI axial image. The signal and morphology of the quadratus femoris were observed. The differences in QFS and IFS were compared between two groups.RESULTS AND CONCLUSION: (1) Among 16 patients, there were 13 females, and 3 males, and 5 female cases of bilateral IFI. (2) In the experimental group, the IFS ((13.65±3.87) mm versus (22.17±5.75) mm) and QFS ((7.15±3.50) mm versus (12.89±3.13) mm) showed significant differences between affected and opposite sides (P < 0.01). (3) In the control group, the IFS ((23.59±6.14) mm versus (23.08±5.82) mm) and QFS ((12.41±3.75) mm versus (13.22±3.84) mm) did not differ significantly between left and right sides (P > 0.05). (4) Compared with the control group, there were significant differences in IFS and QFS of the affected side in the experimental group, and no significant differences in IFS and QFS of the opposite side. (5) In the experimental group, quadratus femoris appeared with deformation, edema and atrophy. (6) To conclude, the incidence of IFI in females is significantly higher than that in males, and bilateral hips are usually affected. MRI diagnostic criteria for IFI are IFS ≤ 11.46 mm, QFS ≤ 5.53 mm of the affected side, and quadratus femoris present edema and deformation, which are more sensitive on axial fat-suppressed MRI imaging.
4.Cleaning of Hard Type Endoscope:A Discussion
Fang WANG ; Dongming QU ; Weiliang LUO ; Mingying YUANG
Chinese Journal of Nosocomiology 1994;0(04):-
65% of many the Mao clean.Do contrast of clean the effect.RESULTS The Mao content is higher of many the Mao clean a product to clean effect an obvious good to content opposite and lower of; Apparatus in time processing of under the circumstance hydration meaning be not big. CONCLUSIONS The choice of exactitude clean a product,is assurance the apparatus clean quality and disinfect put out germ effect of importance factor.
5.Polar constituents of Mosla chinensis.
Juanjuan SHEN ; Dongming ZHANG ; Hua LIU ; Yongming LUO
China Journal of Chinese Materia Medica 2011;36(13):1779-1781
OBJECTIVETo study polar constituents of Mosla Chinensis.
METHODThe constituents were isolated and purified by various chromatographic techniques and their structures were elucidated by physico-chemicalproperties and spectroscopic data.
RESULTSeven glucosides were obtained and their structures were identified as 4-hydroxy-2,6-dimethoxyphenyl-beta-D-glucopyranoside (1), 4-hydroxy-3,5-dimethoxyphenyl-beta-D-glucopyranoside (2), 3, 4, 5-trimethoxypheyl-beta-D-glucopyranoside (3), 3-hydroxyestragole-beta-D-glucopyranoside (4), (6S,9R) -roseoside (5), adenosine (6), and p-hydroxybenzoicacid glucoside (7).
CONCLUSIONAll compounds were isolated from the genus Mosla for the first time.
Adenosine ; chemistry ; isolation & purification ; Glucosides ; chemistry ; isolation & purification ; Lamiaceae ; chemistry ; Plant Extracts ; chemistry ; Plants, Medicinal ; chemistry
6.Expression of monocyte chemoattractant protein-1 in the interstitial cystitis patients
Jianwei Lü ; Yiran HUANG ; Yi LUO ; Jing LENG ; Wei XUE ; Dongming LIU
Chinese Journal of Urology 2009;30(10):693-696
Objective To investigate the levels of monocyte chemoattractant protein-1(MCP-1)in the bladder tissue and urine of female interstitial cystitis(IC)patients. Methods Thirty-five IC patients according tO the NIDDK IC diagnosis standard,20 urinary infection (UI) patients and 25 asymptomatic controls were collected.All IC patients were accepted 24 hour voiding diaries,O'LearySant IC Questionnaires,potassium sensitivity test (PST) and cystoscopy under anesthetic.RT-PCR and ELISA analyses were used to determine the levels of MCP-1 in the bladder tissue and urine specimens from women with IC、UI and controls.Immunohistochemistry staining was used to observe the distribution of MCP-1 in bladder tissue of IC. Results Urine MCP-1 was (74.1±36.9)pg/ml in IC patients,(280.65±68.9)pg/ml in UI patients and(10.8±6.9)pg/ml in asymptomatic controls(P<0.01).Tissue MCP-1 was 76.2±24.0 in IC patients,99.5±30.1 in UI patients and 36.1±14.1 in asymptomatic controls(P<0.01)by RT-PCR analyses.The MCP-1 degree increased in IC patients was between UI patients and asyrnptomatie controls.The severity of IC clinical symptom Was correlated with MCP1 levels. Conclusions The changes in the levels of MCP-1 are associated with IC.After excluding urinary infection,it would be useful for early diagnosis of IC by increased level of MCP-1.
7.Proteomics Changes of Mice Lungs and Colon during Lipopolysaccharide-Induced Lung Injury and the Effect of Platycodonis Radix and Rhei Radix et Rhizoma
Fan LEI ; Hong SUN ; Zongyuan LIU ; Weihua WANG ; Weidong XIE ; Xinchun LUO ; Rui LUO ; Dongming XING ; Lijun DU
World Science and Technology-Modernization of Traditional Chinese Medicine 2023;25(9):3132-3145
Objective To study the proteomic profiling of lung and colon during lung injury induced by lipopolysaccharide(LPS).Methods Mice were divided into four groups:the control,LPS,LPS+ Platycodonis Radix(PR)and LPS+ Rhei Radix et Rhizoma(RRR).LPS was injected into the lungs through trachea,and the drugs were given by intragastric injection.The mice were weighed,the faeces of each mouse were determined,and the lungs and colon were isolated for analysis of pathophysiological changes and proteomics.Results ①After 7 days of LPS,the weight of mice decreased,the lung showed inflammatory changes,and the faeces increased.Both PR and RRR can improve the inflammation.②There are lot of proteins was increased in lung mainly involved in gene transcription and in colon mainly involved in mitochondrial,endoplasmic reticulum and metabolism,etc.The up-regulated proteins shared by both lung and colon were involved in myoprotein contraction.PR can inhibit the up-regulated protein more than RRR in lung.③There are large number of proteins were down-regulated in lung involved in cell membrane and in colon involved in nucleic acid binding and ATP binding.The down-regulated proteins shared by both lung and colon were involved in endoplasmic reticulum,nucleic acid binding and cell membrane,etc.The down-regulated proteins in lung by PR are more than those by RRR,which is involved in endoplasmic reticulum,cell membrane,etc.Conclusion LPS-induced lung injury can cause changes in the expression of protein in lung and colon proteins,and the increase in the expression of myoprotein contraction genes may be one of the molecular mechanisms related to lung and colon.
8.MRI analysis of injury patterns and associated lesions of the medial meniscus posterior root in the knee joint
Dongming LI ; Haiyan WU ; Ju ZENG ; Hua LUO ; Rongzhi LUO ; Pengxu CHEN
Journal of Practical Radiology 2024;40(11):1852-1856
Objective To investigate the classification,concomitant injuries,and their correlations of medial meniscus posterior root(MMPR)injuries through a large-sample analysis,to enhance the comprehensive understanding of MMPR and related injuries.Methods A total of 240 patients with MMPR injuries were divided into 5 types.The distance of the torn end separation and the value of meniscus protrusion of MMPR were measured,and the grading of cartilage injury in the medial tibiofemoral compartment was recorded.The relationships between MMPR injuries and meniscus tear location,tear type,meniscus protrusion,and grading of cartilage injury were analyzed.Results The incidence of MMPR injuries was 2.82%,with females being 3.14 times more affected than males.Medial meniscus tears in type 1 and type 4 MMPR injuries were predominantly located in the posterior horn and posterior root,while there were no statistical differences among types 2,3,and 5.Type 1 MMPR injuries were predominantly oblique tears,types 2,3,and 5 were predominantly radial and complex tears,and type 4 was predominantly complex tears.The incidence of meniscus protrusion was sig-nificantly higher in types 3 and 4 MMPR injuries compared to other types.The value of medial meniscus protrusion was greater in type 4 MMPR than in type 3.In type 3 MMPR injuries,a larger torn end separation distance correlated with a greater value of medial meniscus protrusion.The severity of MMPR injuries correlated positively with the grading of cartilage injury in the medial tibiofemo-ral compartment.Conclusion Females are more prone to MMPR injuries than males.The classification of MMPR injuries correlates with the location and type of medial meniscus tears,as well as medial meniscus protrusion.There is a positive correlation between the torn end separation distance and the value of meniscus protrusion in MMPR injuries.The severity of MMPR injuries correlates with the degree of cartilage injury in the medial tibiofemoral compartment.
9.Studies on chemical constituents of leaves of Psidium guajava.
Huizheng FU ; Yongming LUO ; Dongming ZHANG
China Journal of Chinese Materia Medica 2009;34(5):577-579
OBJECTIVETo study the chemical constituents of the leaves of Psidium guajava.
METHODThe chemical constituents were isolated by column chromatography on silica gel, Sephadex LH-20 and MPLC. Their structures were elucidated on the basis of spectral analysis.
RESULTNine compounds were isolated from this plant, and the structure of them were identified as ursolic acid (1), 2alpha-hydroxyursolic acid (2), 2alpha-hydroxyoleanolic acid (3), morin-3-O-alpha-L-arabopyranoside (4), quercetin (5), hyperin (6), myricetin-3-O-beta-D-glucoside (7), quercetin-3-O-beta-D-glucuronopyranoside (8), 1-O-galloyl-beta-D-glucose (9).
CONCLUSIONCompounds 3, 7-9 were isolated from this plant for the first time.
Plant Extracts ; chemistry ; Plant Leaves ; chemistry ; Psidium ; chemistry
10.Study on chemical constituents from leaves of Tripterygium wilfordii.
Xu CAO ; Chuangjun LI ; Jingzhi YANG ; Baixing WEI ; Yongming LUO ; Dongming ZHANG
China Journal of Chinese Materia Medica 2011;36(8):1028-1031
In order to study the chemical constituents of the leaves of Tripterygium wilfordii and provide references for the bio-active study, we isolated nine compounds from the dried leaves of Tripterygium wilfordii. Their structures were determined by application of spectroscopic (NMR, MS) and chemical methods. These compounds were isolated and identified as (+)-lyoniresinol (1), (+)-isolariciresinol (2), burselignan (3), dibutyl phthalate (4), cyclo-(S-Pro-R-Phe) (5), cyclo-(S-Pro-R-Leu) (6), cyclo-(S-Pro-S-Ile) (7), 3-hydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone (8) and daucosterol (9). Compounds 1-3, 5-8 were isolated from this plant for the first time.
Anisoles
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chemistry
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isolation & purification
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Dibutyl Phthalate
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chemistry
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isolation & purification
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Lignin
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chemistry
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isolation & purification
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Magnetic Resonance Imaging
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methods
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Mass Spectrometry
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methods
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Naphthalenes
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chemistry
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isolation & purification
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Naphthols
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chemistry
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isolation & purification
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Peptides, Cyclic
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chemistry
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isolation & purification
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Plant Extracts
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chemistry
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isolation & purification
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Plant Leaves
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chemistry
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Sitosterols
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chemistry
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isolation & purification
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Tripterygium
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chemistry