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

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

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

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

Objective To report the development of clinical symptoms in a Chinese family with autosomal dominant progressive external ophthalmoplegia(adPEO).Methods Electromyologram and muscle biopsy were performed in the proband and 4 family members with the disease.Results The proband was a 57 year-old woman,who developed bilateral ptosis after the age of 30,external ophthalmoplegia after the age of 35 years old,weakness of extremities at the age of 37 years old and bulb palsy with palmus at the age of 47 years old.In the family there were 20 male and female members from five generations.All of them complained about bilateral ptosis between 26—33 years old,external ophthalmoplegia(12/15)and weakness of all extremities(14/15)between 35—45,facial and masticatory weakness(9/9)as well as dysphagia(8/9)between 44—60,accompanied with heart lesions(4/7)after 50 years old.Some patients died due to cardiac impairment.Electromyologram showed myopathic abnormalities in the examined patients. The main myopathological changes were ragged red fibers,cytochrome c oxidase negative fibers and ragged blue fibers in succinate dehydrogenase staining.Conclusions The adPEO started from extra-ocular muscles to limbs,finally facial and bulbar muscles.Heart lesions were presented in late stage and lead to death in some members.The developing process of symptoms suggested that we should pay more attention to cardiac manifestations in this disease.

Objective To analysis the clinical manifestations of mtDNA A3243G mutation in adulthood.Methods The clinical features were investigated in 36 cases (28 patients from 5 families with the mutation and 8 sporadic cases),in whom mtDNA A3243G mutation was confirmed genetically in 23 cases (15 cases from 5 mutation families and 8 sporadic cases).Cranium radiology was performed in 14 cases.Muscal biopsies were performed in l0 cases.Results Among 28 cases in the 5 family,there were 9 cases (32.1%) with stroke like episodes,17 cases (60.7%) with diabetic mellitus and 16 cases (57.1%) with deafness.Such symptoms usually combined with each other and rarely existed alone. Cardiomyopathy and renal failure were uncommon.In the 23 cases with mtDNA A3243G mutation,14 cases (61.0%) had mitochondria] myopathy,encephalopathy,lactic acidosis,and stroke-like episodes (MELAS),mostly presenting cognitive abnormalities,dysarthria or aphasia and headache,3 cases (13.0%) were asymptomatic carriers,2 cases (8.7%) had autonomic dysfunction,2 cases (8.7%) had diabetic mellitus with or without nerve deafness,1 case (4.3%) had diabetic mellitus with infertilitas and cardiomyopathy,respectively.Cranial radiological images revealed the changes more commonly in the temporal and occipital lobes and less frequently in the frontal lobes.Ragged red fibers were confirmed in 9 of 10 cases with muscle biopsies.The proportion of mutant mtDNA A3243C was not significantly different between MEALS (28.75%?13.69%) and non-MELAS (25.08%?11.54%).Conclusions mtDNA A3243G mutation mainly results in the lesions in the central nerve system,pancreatic island and acoustic nerve in adulthood.Heart and kidney are less frequently involved.Cognitive abnormalities,aphasia and headache are the major symptoms of adult MELAS.Families have with more than 1 patient with diabetic mellitus and deafness,indicating that the mutation is other than MELAS mutation.We should pay more attention to the non-MELAS symptoms in the families with mtDNA A3243G mutation.

Objective To investigate the axonal lesion in chronic inflammatory demyelinating polyneuropathy(CIDP).Methods Eighteen patients had undergone sural nerve biopsy.The clinical and electrophysiological distinction based on the different pathological changes were analyzed.Results Five patients with demyelination predominance which presented myelinated fiber with thin myelin.Three of them showed also mild axonal degeneration.Eight patients with axonal lesion predominance which presented Wallerian degeneration and regeneration of myelinated fibers.Three patients with mixed myelin and axon lesion of myelinated fibers and two with mild lesion.There was no significant difference between CIDP predominantly with axonal lesion and demyelination.Electrophysiological examination shows both axonal lesion and demyelination feature in some of the 2 types patients at the same time.Conclusions Axonal lesion is a common pathological change in CIDP and should not be considered as an exclusive criterion in diagnosis of the disease.Infiltration of macrophages is a common change.

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.