Objective To preliminarily explore the clinical significance of word recognition scores in evalua_ting the curative effects of sudden hearing loss .Methods Pure tone averages (PTA) and word recognition scores (WRS) in 11 cases of sudden hearing loss were obtained on the pre-treatment day and the post -treatment day , and the results were compared .ResuIts The average PTA of 11 cases was 62 .27 ± 15 .36 dB HL on the pre-treat_ment day ,and 60 .23 ± 14 .32 dB HL on the post -treatment day .The average WRS in 11 cases was 42 .91% ± 30 .83% on the pre-treatment day ,and 72 .73% ± 26 .72% on the post-treatment day .There were no significant differences in PTA and the intensity of the sound for testing WRS before and after treatment(P> 0 .05) ,and the difference of the WRS between the pre -treatment and the post -treatment day was statistically significant(P<0 .05) .ConcIusion The WRS could be used in evaluating the curative effect of sudden hearing loss ,which is a sup_plement for PTA .

OBJECTIVE:To establish a method for the determination of weight average molecular weight(Mw)and molecular weight distribution (D) of ferric carboxymaltose. METHODS:HPGPC method was adopted to detect the Mw and D of 3 batches of Ferric carboxymaltose injection (imported) and its raw material (self-made). The determination was performed on TSK G4000 PWXL column with 0.1% sodium azide solution with the flow rate of 0.5 ml/min. The detector was refractive index detector;the column temperature was set at 35 ℃,and sample size was 20 μl. The results were calculated with GPC software. RESULTS:RSDs of precision,stability and reproducibility tests were all lower than 3.0%(n=6);Mw and D of 3 imported samples were 157 667 and 1.30;those of self-made samples were 162 000 and 1.42. CONCLUSIONS:The method has high precision,good stability,repeat-ability and durability. It can be used for the determination of Mw and D of ferric carboxymaltose.

To investigate the mechanism of agarwood formation in Aquilaria sinensis induced by Lasiodiplodia theobromae, the fermentation liquor of L. theobromae was analyzed qualitatively and quantitatively by gas chromatography-mass spectrometry (GC-MS). JAs were detected in the fermentation liquor. The effect of the fermentation liquor on the abundance of sesquiterpenes in the callus of A. sinensis was analyzed by solid phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS). And the fermentation liquor stimulated alpha-guaiene, alpha-humulene and delta-guaiene biosynthesis in calli. It was inferred that L. theobromae produced JAs, which resulted in a significant increase of sesquiterpenes in A. sinensis.
Ascomycota ; physiology ; Fermentation ; Sesquiterpenes ; metabolism ; Thymelaeaceae ; metabolism ; microbiology

This study was aimed to observe changes of key molecular in insulin signaling pathway in the hypothala-mus of rats to explore the mechanism of spleen yin deficiency diabetes-associated cognitive decline (DACD) and Zibu Piyin Recipe (ZBPYR) in order to provide new ideas and new clues for treatment of DACD. Rats were randomly divided into five groups, which were the control (Cont) group, diabetes (DM) group, spleen yin deficiency (pi) group, spleen yin deficiency diabetes (piDM) group and the ZBPYR group. Insulin receptor substrate 1 (IRS-1) serine phos-phorylation levels and protein kinase B (PKB/Akt) serine phosphorylation levels which were involved in the insulin signaling were observed by western blotting in the hypothalamus to determine whether there were insulin signaling obstacles in the hypothalamus of rats. The results showed that the expression of p-IRS-1ser in the DM group, pi group and piDM group was increased compared with the Cont group (P< 0.05); while the p-Akt expression of the DM group and piDM group was decreased (P< 0.05). The expression of p-IRS-1ser in the ZBPYR group decreased compared with the DM group and piDM group (P< 0.05); while the level of p-Akt increased compared with the DM group and piDM group (P < 0.05). It was concluded that insulin signaling was not transduced normally in the hy-pothalamus of the DM group, pi group and piDM group. Insulin resistance may occur in the hypothalamus. And ZBPYR can correct insulin signaling transduction disorder.

This study was aimed to observe different forms of β-amyloid peptide (Aβ) and insulin degrading enzyme (IDE) in the hippocampus and cortex in order to further explore the role of Aβ and IDE on spleen yin deficiency di-abetes-associated cognitive decline (DACD), and the effect of Zi-Bu Pi-Y in method. The rats were randomly divided into five groups, which were the blank control (Cont) group, diabetes (DM) group, spleen yin deficiency (pi) group, spleen yin deficiency diabetes (piDM) group and Zi-Bu Pi-Y in recipe (ZBPYR) group. Soluble and insoluble Aβ in the hippocampus and cortex of rats were extracted by gradient centrifugation, and then measured by ELISA. The ex-pression of IDE was observed by western blot. The results showed that the content of soluble and insoluble Aβ1-42 in the hippocampus and cortex of the DM group and piDM group were higher than the Cont group. The soluble and in-soluble Aβ1-42 content in the hippocampus and cortex of the ZBPYR group were reduced compared with the DM group and the piDM group. The soluble Aβ1-40 in the cortex of the DM group, pi group and piDM group were in-creased compared with the Cont group (P < 0.05). The soluble Aβ1-40 content of the ZBPYR group was decreased compared with the DM group and the piDM group (P < 0.05). The expression of IDE protein was decreased in the hippocampus of the DM group and the piDM group compared with the Cont group (P< 0.05), and the IDE protein level in the hippocampus of the ZBPYR group was increased compared with the DM group and the piDM group (P<0.05). The expression of IDE protein in the cortex of the DM group, pi group and piDM group was lower than the Cont group (P< 0.05). The IDE protein level in the cortex of the ZBPYR group was reduced compared to the DM group (P< 0.05). It was concluded that the increased Aβ1-42 in brain may be a major pathological change of DACD and spleen yin deficiency DACD. The decreased IDE expression may be one of the reasons to induce increasing of Aβ1-42 level. The Zi-Bu Pi-Y in method may decrease the Aβ1-42 content by upregulating IDE protein expression.

Adolescent ; Adult ; Aged ; Child ; Endoscopes ; Female ; Humans ; Male ; Middle Aged ; Otorhinolaryngologic Surgical Procedures ; Smell ; Turbinates ; surgery ; Young Adult

OBJECTIVETo prepare a single-epitope polyclonal antibody against mouse long peptidoglycan recognition protein (mPGRP-L).

METHODSB cell dominant epitopes of mPGRP-L predicted by bioinformatics were synthesized, and the immunogen was prepared by conjugation of the synthetic peptide and the carrier protein key-hole limpet hemocyanin (KLH) by MBS method. The single-epitope polyclonal antibody was obtained by immunizing rabbits with the KLH-peptide conjugate, purified by SPG affinity columns or antigenic peptide affinity columns, and identified by ELISA and Western blotting.

RESULTS AND CONCLUSIONA dominant epitope in N-terminal region of mPGRP-L, with amino acid sequence of NH(2)-(C)DPHSLSPELQALISEVAQHD-COOH, was chosen and synthesized. The titer of anti-serum of the rabbits immunized with the KLH-peptide conjugate was 1:256,000. The polyclonal antibody purified with SPG affinity columns and antigenic peptide affinity columns were named as mPGRP-Ln1 and mPGRP-Ln2, respectively. Western blotting demonstrated that the antibody mPGRP-Ln1 could recognize the recombined N-terminal fragment of mPGRP-Ln with a clear band at relative molecular mass of about 29,000, suggesting the successful preparation of the single-epitope polyclonal antibody against the N-terminal region of mPGRP-L.

Amino Acid Sequence ; Animals ; Antibodies, Monoclonal ; chemistry ; immunology ; isolation & purification ; Antibody Specificity ; immunology ; Blotting, Western ; Carrier Proteins ; chemistry ; immunology ; Enzyme-Linked Immunosorbent Assay ; Epitope Mapping ; Epitopes ; chemistry ; immunology ; Hemocyanins ; chemistry ; Immune Sera ; immunology ; Mice ; Molecular Sequence Data ; Protein Binding ; Rabbits

Base Sequence ; DNA, Neoplasm ; genetics ; DNA-Binding Proteins ; metabolism ; Gene Rearrangement, B-Lymphocyte, Heavy Chain ; Genes, Immunoglobulin Heavy Chain ; Humans ; Immunoglobulin Heavy Chains ; genetics ; Interferon Regulatory Factors ; metabolism ; Lymphoma, Large B-Cell, Diffuse ; genetics ; metabolism ; Molecular Sequence Data ; Neprilysin ; metabolism ; Proto-Oncogene Proteins c-bcl-6

Objective To evaluate the effect of oxycodone on migration of human colon cancer cells and the role of μ and κ receptors.Methods The human colon cancer HCT116 cells at the logarithmic growth phase were seeded in 24-well or in 6-well plates at a density of 1 × 106 cells/mnl (0.5 ml/well or 2 ml/well,144 wells in total).The cells were divided into 6 groups (n=24 each) using a random number table:control group (group C),1,5 and 10 μmol/L oxycodone groups (group O1,group O2 and group O3),oxycodone plus μ receptor antagonist CTOP group (group O2+CTOP) and oxycodone plus κ receptor antagonist nor-binaltorphimine group (group O2+BNI).The cells were incubated for 24 h with oxycodone 1,5 and 10 μmol/L in O1,O2 and O3 groups,respectively.The cells were incubated for 24 h with 5 μmol/L oxycodone plus 20 μmol/L CTOP and 5 μmol/L oxycodone plus nor-binahorphimin 20 μmol/L in O2+CTOP and O2+BNI groups,respectively.The invaded and migrated cells were counted,and the levels of Ras homolog gene family member A (RhoA),Rho-associated protein kinase 1 (ROCK1),matrix metalloproteinase-2 (MMP-2) and MMP-9 were detected.Results Compared with group C,the number of invaded and migrated cells was gradually decreased,and the levels of RhoA,ROCK1,MMP-2 and MMP9 were gradually decreased in O1,O2 and O3 groups (P＜0.05),and no significant change was found in the parameters mentioned above in group O2+BNI (P＞0.05).Compared with group O2,the number of invaded and migrated cells was significantly increased,and the levels of RhoA,ROCK1,MMP-2 and MMP9 were increased in group O2 + BNI (P＜0.05),and no significant change was found in the parameters mentioned above in group O2+CTOP (P＞0.05).Conclusion Oxyc odone can inhibit the migration of human colon cancer cells,and the mechanism is totally related to inhibition of RhoA/ROCKl signaling pathway activation after activating κ receptors,but not related to μ receptors.

Objective To explore the relationship of expression and the effect of preoperative radiotherapy of endothelin-1 (ET-1) and pyruvate kinase M-2 (PKM2) in rectal carcinoma.Methods Immunohistochemical method was used to detect the expression of ET-1 and PKM2 proteins of rectal cancer tissues in 96 cases.The expressions of ET-1 and PKM2 were analyzed with the effect of preoperative radiotherapy in rectal cancer tissue.Results The high expression of ET-1 protein was 59 cases (61.46％).The high expression of PKM2 proteins was 54 cases (56.25％).The high expressions of ET-1 and PKM2 protein were worsen the effect of tumor regressive grade (TRG) than lower expressions of those after preoperative radiotherapy of rectal cancer tissue (P ＜ 0.05).The protein expression of ET-1 and PKM2 were positively correlated (P =0.006).Conclusions The high expressed ET-1 and PKM2 proteins in rectal cancer are closely related to preoperative radiotherapy resistance.ET-1 and PKM2 proteins are expected to become new targets of radiotherapy sensitivity and radiotherapy sensitization of rectal cancer.