Objective To study the mechanism of miR-548a-3p targeting MMP-2 inhibits the metastasis and invasion of gastric cancer cells.Methods Bioinformatics were used to search those miRNAs targeting MMP-2.The level of miR-548a-3p in gastric cancer tissues were detected by qRT-PCR and the expression of MMP-2 were detected by Western blot.The level of miR-548a-3p in three reconstructed gastric cancer cell lines were detected by qRT-PCR and the expression of MMP-2 were detected by Western blot.miR-548a-3p targeting the 3'-UTR of MMP-2 were detected by Luciferase reporter assay detected.And the changes of ability of metastasis and invasion were examined by Transwell experiment before and after transfection.Results There were high expression of miR217 and low expression of MMP-2 in human poorly differentiated gastric cancer cell line BGC-823.There were low expression of miR-548a-3p and high expression of MMP-2 in human middle and high differentiated gastric cancer cell line MKN-28 and SGC-7901 (P ＜ 0.05).The result of Luciferase reporter assay showed that miR-548a-3p can targeting the 3’-UTR of MMP-2.There were high expression of miR-548a-3p and low expression of MMP-2 in MKN28-miR-548a-3p mimics.There were low expression of miR-548a-3p and high expression of MMP-2 in others reconstructed three cell lines.There were smaller invaded cells in SGC-7901-miR-217 mimics than in others three cell lines (P ＜ 0.05).Conclusions miR-548a-3p can target the 3'-UTR of MMP-2 and down regulate its expression and inhibit the ability of invasion of gastric cancer cells.

Chemical investigation of fruits of Mours alba L. lead to the isolation of fifteen compounds by various chromatographies such as silica gel, Sephadex LH-20, RP-C18 column chromatography. Their structures were determined to be: 1-[5-(2-formlfuryl) methyl] dihydrogen 2-hydroxypropane-1, 2, 3-tricarboxylate 2, 3-diethyl ester (1), 1-[2-(furan-2-yl)-2-oxoethyl] pyrrolidin-2-one (2), divaricataester A (3), methyl 1-[2-(furan-2-yl)-2-oxoethyl]-5-oxopyrrolidine-2-carboxylate (4), 1-[2-(furan-2-yl)-2-oxoethyl]-5-oxopyrrolidine-2-carboxylic acid (5), L-pyroglutamic acid (6), L-pyroglutamic acid ethyl ester (7), 3-O-caffeoylquinic acid methyl ester (8), 3-O-caffeoylquinic acid ethyl ester (9), 5-O-caffeoylquinic acid methyl ester (10), 5-O-caffeoylquinic acid ethyl ester (11), 4-O-caffeoylquinic acid methyl ester (12), 4-O-caffeoylquinic acid methyl ester (13), 4-O-caffeoylquinic acid (14), 3-O-caffeoylquinic acid (15), respectively, based on the spectral analysis such as NMR, MS etc. Compounds 1-14 were isolated from this genus for the first time, among which 1 was a new compound.

A new terpenoid, lucidone D (1), has been isolated from Ganoderma lucidum. Its structure was determined to be 7beta, 15alpha-dihydroxy-4, 4, 14alpha-trimethyl-3, 11, 20-trioxo-5alpha-pregn-8-en on the basis of 1D and 2D-NMR spectral analysis.

Objective:To investigate the effects of tert-butyl hydroperoxide (TBH) on the expression of second mitochondria-derived activator of caspase (Smac) and X-linked inhibitor of apoptosis (XIAP) in mitochondrial pathway after cerebral ischemia/reperfusion injury in rats.Methods:From March to December in 2019, 45 healthy male Sprague-Dawley rats were randomly divided into sham-operation, model and TBH groups. Rat models of cerebral ischemia/reperfusion injury were established by ligation of the left carotid artery. Rat neurological function was evaluated to exclude the rats that failed in cerebral ischemia/reperfusion injury induction. Ten rats were left in each group. At 0.5 and 12 hours after cerebral ischemia/reperfusion injury, rats in the TBH group were treated by intragastric administration of 12.5 mg/kg TBH and those in the sham-operation and model groups were identically treated by intragastric administration of equal volume of 0.9% sodium chloride injection. After 24 hours of reperfusion, rat neurological function was assessed in each group. Then the rats were killed and the brains were harvested. Apoptosis of nerve cells was detected by terminal deoxynucleotidyl transferase dUTP nick end-labeling (TUNEL) assay. The levels of superoxide dismutase (SOD), malondialdehyde (MDA), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in the brain tissue were detected by enzyme-linked immunosorbent assay. XIAP- and Smac-positive cell count and protein expression were determined by immunohistochemical staining and western blot assay, respectively.Results:Rat neurological function score in the TBH group was significantly lower than that in the model group [(1.36 ± 0.49) points vs. (3.73 ± 0.97) points, t = 6.896, P < 0.001]. In the TBH group, a large number of apoptotic nerve cells were found in the ischemic cerebral cortex, but the number of apoptotic nerve cells in the TBH group was significantly smaller than that in the model group. In the model group, SOD level was significantly lower, MDA, TNF-α and IL-1β levels were significantly higher compared with the sham-operation group [SOD: (51.94 ± 3.46) U/mg vs. (70.68 ± 2.67) U/mg, t = 13.560, P < 0.001; MDA: (5.69 ± 0.78) nmol/mg vs. (1.20 ± 0.96) nmol/mg, t = 11.479, P < 0.001; TNF-α: (89.36 ± 9.84) pg/mg vs. (40.53 ± 4.35) pg/mg, t = 14.353, P < 0.001; IL-1β: (41.35 ± 6.79) pg/mg vs. (17.22 ± 2.31) pg/mg, t = 10.639, P < 0.001]. In the TBH group, SOD level was significantly higher, MDA, TNF-α and IL-1β levels were significantly lower compared with the model group [SOD: (51.94 ± 3.46) U/mg vs. (68.84 ± 5.03) U/mg, t = 8.754, P < 0.001; MDA: (5.69 ± 0.78) nmol/mg vs. (2.46 ± 0.48) nmol/mg, t = 11.153, P < 0.001; TNF-α: (89.36 ± 9.84) pg/mg vs. (57.64 ± 6.22) pg/mg, t = 8.617, P < 0.001; IL-1β: (41.35 ± 6.79) pg/mg vs. (23.84 ± 5.48) pg/mg, t = 6.346, P < 0.001]. XIAP- and Smac-positive cell count and protein expression in the model group were significantly greater than those in the sham-operation group [XIAP-positive cell count: (22.63 ± 4.37) vs. (12.39 ± 3.18), t = 5.992, P < 0.001, Smac-positive cell count: (47.58 ± 6.94) vs. (5.64 ± 1.35), t = 18.759, P < 0.001; XIAP protein expression: (0.53 ± 0.08) vs. (0.24 ± 0.05), t = 9.721, P < 0.001; Smac protein expression: (0.92 ± 0.15) > ( 0.36 ± 0.05), t = 11.200, P < 0.001 ]. In the TBH group, XIAP-positive cell count and XIAP protein expression were significantly higher and Smac-positive cell count and Smac protein expression were significantly lower compared with the model group [XIAP-positive cell count: (36.78 ± 5.26) vs. (22.63 ± 4.37), t = 6.543, P < 0.001, Smac-positive cell count: (31.74 ± 4.26) vs. (47.58 ± 6.94), t = 6.151, P < 0.001; XIAP protein expression: (0.79 ± 0.10) vs. (0.53 ± 0.08), t = 6.420, P < 0.001, Smac protein expression: (0.70 ± 0.09) vs. (0.92 ± 0.15), t = 3.977, P < 0.001]. Conclusion:TBH can effectively reduce neuronal apoptosis, oxidative stress and inflammatory reaction after cerebral ischemia/reperfusion injury, which may be related to the regulation of XIAP and Smac signaling pathways.

Objective To evaluate the clinical value of ultrasonography guided percutaneous core needle biopsy in pancreatic lesions. Methods Thirty-four patients with 36 pancreatic lesions in Shanghai First People′s Hospital Afifliated to Shanghai Jiao Tong University from February 2012 to November 2013 underwent conventional ultrasound-guided percutaneous core needle biopsy using automatic gun and 18-gauge biopsy needles. The site, size, internal and surrounding vascularity, the sampling number of the lesions, and whether the specimens′ quality was satisfied were recorded. Then specimens were sent for pathological examination, and all above observations were compared with the ifnal diagnosis. Results The number of lesions with 2, 3 and 4 samplings was 32, 2 and 2, respectively. The average number of sampling was 2.2 (mean, 2.17;standard deviation, 0.51) and the acquisition rate of satisifed specimens was 89%(32/36). The pathological results of biopsy were malignant in 31 of 36 lesions including 27 cases of ductal adenocarcinoma, 2 cases of lymphoma, 1 case of small cell neuroendocrine carcinoma and 1 case of uterine leiomyosarcoma metastasis. The other 5 lesions were non-malignant including 3 cases of benign lesion, 1 cases of atypical hyperplasia and 1 cases of granulation tissue. The 36 lesions were ifnally diagnosed as 34 cases of pancreatic malignancy, 2 cases of non-malignant neoplasm. The sensitivity, speciifcity, accuracy, positive predictive value and negative predictive value of ultrasonography guided percutaneous core needle biopsy in pancreatic lesions were 91%(31/34), 100%(2/2), 92%(33/36), 100%(31/31) and 40%(2/5), respectively. Youden index was 0.91. Two patients had mild upper abdominal pain and 1 patient had transient elevated serum amylase. No pancreatitis, pancreatic fistula, peritonitis, bleeding or dispersion of malignant cells along the penetrating channel or other serious complications occurred. Conclusion Ultrasonography guided percutaneous core needle biopsy is a simple, rapid, safe and effective diagnostic method in pancreatic lesions with high clinical value.

Twelve compounds were isolated from the herb of Chenopodium ambrosioides, and their structures were identified by spectroscopic methods as kaempferol-7-O-alpha-L-rhamnopyranoside (1), kaempferol-3,7-di-O-alpha-L-rhamnopyranoside (2), patuletin (3), quercetin-7-O-alpha-L-rhamnopyranoside (4), grasshopper ketone (5), 4-hydroxy-4-methyl-2-cyclohexen-1-one (6), syringaresinol (7), benzyl beta-D-glucopyranoside (8), dendranthemoside B (9), N-trans-feruloyl tyramine (10), N-trans-feruloyl 4'-O-methyldopamine (11), and 4-hydroxy-N-[2-(4-hydroxyphenyl) ethyl] benzamide (12). Among them,compounds 3, 6-8,10, and 12 were isolated from the genus Chenopodium for the first time, and compounds 2-12 were isolated from this plant for the first time.
Chenopodium ambrosioides ; chemistry ; Drugs, Chinese Herbal ; chemistry ; isolation & purification

Chemical investigation of fruits of Mours alba L. lead to the isolation of fifteen compounds by various chromatographies such as silica gel, Sephadex LH-20, RP-C18 column chromatography. Their structures were determined to be: 1-[5-(2-formlfuryl) methyl] dihydrogen 2-hydroxypropane-1, 2, 3-tricarboxylate 2, 3-diethyl ester (1), 1-[2-(furan-2-yl)-2-oxoethyl] pyrrolidin-2-one (2), divaricataester A (3), methyl 1-[2-(furan-2-yl)-2-oxoethyl]-5-oxopyrrolidine-2-carboxylate (4), 1-[2-(furan-2-yl)-2-oxoethyl]-5-oxopyrrolidine-2-carboxylic acid (5), L-pyroglutamic acid (6), L-pyroglutamic acid ethyl ester (7), 3-O-caffeoylquinic acid methyl ester (8), 3-O-caffeoylquinic acid ethyl ester (9), 5-O-caffeoylquinic acid methyl ester (10), 5-O-caffeoylquinic acid ethyl ester (11), 4-O-caffeoylquinic acid methyl ester (12), 4-O-caffeoylquinic acid methyl ester (13), 4-O-caffeoylquinic acid (14), 3-O-caffeoylquinic acid (15), respectively, based on the spectral analysis such as NMR, MS etc. Compounds 1-14 were isolated from this genus for the first time, among which 1 was a new compound.
Chlorogenic Acid ; isolation & purification ; Esters ; Fruit ; chemistry ; Furans ; chemistry ; isolation & purification ; Lactams ; isolation & purification ; Molecular Structure ; Morus ; chemistry ; Plants, Medicinal ; chemistry ; Pyrrolidonecarboxylic Acid ; isolation & purification ; Tricarboxylic Acids ; chemistry ; isolation & purification

Objective To investigate the clinical efficacy of preoperative full reset combined with minimally invasive treatment of extreme distal pilon fractures.Methods A retrospective analysis was made on 34 patients (35 ankles) with tibial fractures extremely close to the distal articular surface treated surgically between January 2011 and January 2015.There were 21 mnales and 13 females,aged 20-71 years (mean,36.2 years).Injury resulted from traffic accidents in 32 patients and high falls in two.Using the AO/OTA fracture classification system,type 43-B3 was noted in three patients,43-C1 in five patients,43-C2 in 18 patients and 43-C3 in eight patients.Calcaneal traction combined with manipulative reduction was used to correct fracture displacement preoperatively.All fractures were stabilized by minimally invasive percutaneous plate osteosynthesis (MIPPO) through single or combined medial,anteromedial and anterolateral approaches while minimizing damage to bone attachment and continuity of soft tissue,after soft tissue swelling subsided.For the patients with articular surface collapsing with severe comminution,a series of procedures were done under direct vision including using the talus articular surface as a mold,stable fixation with fine Kirschner (1-1.5 mm) and thin screws (2.1-2.7 mm series) and impaction bone grafting below subchondral bone.Thereafter,distal tibia anatomical short multi-directional locking plate fixation,distal nail support and early ankle joint functional exercise were done.Burwell-Charnley radiological evaluation system was used for radiological assessment,and TeenyWiss scoring system for ankle clinical symptoms and function.Postoperative complications were recorded.Results Follow-up lasted for 11-38 months (mean,16.6 months).No infection,wound disunion,or plate exposure occurred.Burwell-Charnley radiological evaluation system showed anatomic reduction in 32 patients,unsatisfactory reduction in one,and poor reduction in one.According to the Teeny-Wiss scoring system,the results were excellent in 31 patients,good in two and poor in one,with the excellentgood rate of 97％.Three patients suffered traumatic arthritis after operation and alleviated after oral administration of painkiller.Conclusion With use of full reset combined with manipulative reduction to correct fracture displacement,minimally invasive locking plate,distal row of nails,impaction bone grafting and limited fixation,the patients with extremely distal tibial pilon fractures achieve satisfactory reduction,stable fixation,and early functional exercise.

Objective · To investigate the status of depression and anxiety in patients with recurrent spontaneous abortion (RSA) and the possible influence factors and to provide theoretical support for further psychological intervention. Methods · RSA patients and women with no history of RSA were invited to complete a questionnaire, including basic information, Self-Rating Depression Scale (SDS) and Self-Rating Anxiety Scale (SAS). All data were analyzed by SPSS. Results · Of all 1064 cases included in this study, 725 were RSA cases, 217 cases with one spontaneous abortion and 122 in control group with no history of spontaneous abortion. Our results showed that both RSA patients and patients with one spontaneous abortion have significantly higher SDS and SAS scores than control group. Furthermore, non-pregnant RSA patients with lower education level, lower household income and 3-5 years of marriage have significantly higher levels of depression and anxiety. Patients with multiple miscarriages (≥4), history of induced abortion and no live birth, score significantly higher in SDS. Conclusion · Whether pregnant or not, RSA patients are much easier to become depressive and anxious, which may be associated with education level, household income, length of marriage, numbers of pregnancy losses and previous live birth. Women with one spontaneous abortion also show a significant higher tendency of depression and anxiety. These patients should be given proper psychological intervention if necessary.

Objective To observe the effects and mechanism of lung inflation with carbon monoxide (CO) during the cold ischemia phase on lung ischemia-reperfusion injury (IRI) after rat lung transplantation.Method Twenty-four pairs of SD rats were selected to establish the model of lung transplantation,and random number method was used to divide 24 donors into 3 groups with 8 rats in each group.(1) CO inflation group (CO group):During the cold ischemia phase,500 ppm CO +volume fraction 40％ O2 + N2 was used for lung inflation,and the volume was 5 mL/kg;(2) O2 inflation group (O2 group):During the cold ischemia phase,volume fraction 40％ O2 + volume fraction 60％ N2 was used for lung inflation;(3) Control group:The lung was deflated during the cold ischemia phase.The gas was replaced every 30 min in the CO and O2 groups,and the lung transplantations were performed after 180 min of cold ischemia.The arterial blood gas analysis was performed at baseline,3 min after reperfusion,and 60,120,and 180 min after reperfusion.The recipient serum levels of relative inflammatory factors,lung tissue cell apoptosis and nuclear factor kappa B (NF-κB) protein expression were detected after 180 min of reperfusion.Result As compared with the control group (238 ± 61 mm Hg),the oxygenation index in the O2 group (293 ± 78 mm Hg) and CO group (361 ± 48 mm Hg) was increased (P＜0.05),and as compared with the O2 group,that in the CO group was increased (P＜0.05).Furthermore,as compared with the control group,the interleukin (IL)-8,tumor necrosis factor (TNF)-α,and cell apoptosis in the O2 group and CO group were decreased significantly,and as compared with the O2 group,those in the CO group and NF-κB protein expression were significantly decreased (P＜0.05).Conclusion Lung inflation with CO during the cold ischemia phase ameliorated the rat lung IRI via reducing the inflammatory response and cell apoptosis mediated by the NF-κB pathway.