1.Electrophysiology of peripheral nerve in children suffering from congenital clubfoot:report of 338 feet
Journal of Third Military Medical University 1983;0(03):-
Objective To investigate the etiology and provide data for clinical treatment and therapeutic assessment of congenital clubfoot(CCF) via neuroelectrophysiology on motor and sensory nerves and ultrastructure of sural nerve.Methods Totally 248 patients diagnosed with CCF(338 clubfeet) were studied.Motor nerve conduction velocity(MCV),sensory nerve conduction velocity(SCV) and wave amplitude were detected for any changes.An ultra-structural study of sural nerve ramification was also conducted in 36 patients(36 clubfeet) under electron microscope.The correlation between deformity degree,nerve conduction abnormality and therapeutic outcomes was analyzed.Results The motor nerve conduction in 291 clubfeet(86.1%) and the sensory nerve conduction in 252 clubfeet(74.6%) were found with different degrees of abnormalities such as prolonged latency,declined/disappeared wave amplitude,etc.The ultrastructural observation of sural nerve ramification demonstrated abnormalities in all the 36 cases,showing proliferation of myelin sheath in peripheral myelinated nerve fibers,formation of vacuoles,segmental demyelinating lesions and so on.Part of axial cord was squeezed by the proliferated myelin sheath,which resulted in disappearance of axoplasm.The correlation study showed that as deformity became more severe,the nerve conduction abnormality was more evident,requiring more complicated treatments,and the therapeutic outcomes were less satisfactory.Statistical analysis by Mantel-Haenszel method showed that:① the abnormality rate of motor nerve in different types of CCF is signifi-cantly different(?2=32.31,P
3.Application of Internal Amplification Control in the PCR Detection Method for Food-borne Salmonella
Bin LIU ; Xian-Ming SHI ;
Microbiology 1992;0(02):-
An internal amplification control, which could be co-amplified with the invA target gene of Salmonella in the PCR system, was constructed in order to indicate possible PCR inhibitors derived from food samples. Specificity of this PCR system was tested with 9 Salmonella strains and 15 non-Salmonella strains, and the results showed that there was a 374 bp amplicon resulted from all Salmonella strains, while only a 513 bp IAC amplicon appeared after the amplification for all non-Salmonella strains. The detection sensitivity of this PCR system was 12.8 fg/?L for purified target DNA, and the detection limit for artificially inoculated milks was 8 cfu /25g if they were enriched for 8h in buffered peptone water. Salmonella in 80 samples of seriously contaminated milks was detected by the PCR method developed in this study, and the experiments demonstrated that it could successfully eliminate false-negative results.
4.Correction of nasal deformities in unilateral cleft lip
Bin YANG ; Bin XIONG ; Ming ZHAO ; Liang ZHANG
Chinese Journal of Medical Aesthetics and Cosmetology 2010;16(4):233-236
Objective To analyze the mechanism of nasal deformity by reviewing the possible pathogenesis and nasal anatomy and to find the effective and reliable operative methods to correct nasal deformities in unilateral cleft lip.Methods 57 patients (37 males,20 females,and range in age from 12 to 25 years,with mean of 18.6 years) with nasal deformities in unilateral cleft lip were available for this study.The nasal deformities were treated with the following surgical procedures according to the different locations and degree Of nasal deformities.The eompositive techniques included:alveolar bone grafting was taken to correct the collapse the nasaI base;a cortical plate was inserted between the two medial crura of the alar cartilage.According to the nasal contours of non-cleft side,the alar cartilage was resected and suspended to its normal and symmetrical position.The alar cartilaginous ring was reconstruction,which maintained the nostril shape 3 month postoperatively.Results A total of 57 cases were treated by the method above,and were ranged with score by operators and patients.93% of cases were evaluated as satisfaction after operation.The follow-up for 3 to 24 months showed that 52 cases had achieved satisfactory effects,5 cases showed the trend to relapse.Conclusion The cause of nasal deformities in unilateral cleft lip is complex.The study has achieved a significant improvement by synthetical correction of deformities of maxilla,cartilage and soft tissues, and the restoration of nasal-labial muscles.The rigid suspending is more important to maintain the nostril contour and avoid relapse.
7.The cloning of human interleukin-10 gene and its expression in eukaryotic cells
Journal of Medical Postgraduates 2003;0(08):-
Objective: To clone human interleukin 10(hIL-10) gene full-length cDNA sequence and to construct its eukaryotic expression vector in Chinese hamster ovary(CHO) cells. Methods: cDNA fragment encoding hIL-10 gene was amplified from human peripheral normal white blood cells by RT-PCR and confirmed by DNA sequencing.The ds-DNA was inserted into pcDNA3 vector.This recombinant expressing vector was transfected into CHO cell.The IL-10 molecules expressed were detected by ELISA and the role of inhibition of IL-10 was determined with MTT. Results: The cDNA encoding hIL-10 was cloned by RT-PCR and inserted into T-easy vector and sequence analysis verified that the cloned fragment was hIL-10 cDNA.The IL-10 was expressed in the CHO and it blocked the lymphocyte transformation.Conclusion: The eukaryotic expression plasmid was constructed successfully,which will contribute to further studies on the role of hIL-10 in autoimmunity,transplantation immunity and inflammatory disease.
8.Determination of Ochratoxin A in Chinese Herbs by HPLC-MS/MS
China Pharmacist 2014;(10):1652-1654,1655
Objective:To determine ochratoxin A ( OTA ) in Chinese herbs by high performance liquid chromatography-tandem mass spectrometry method ( HPLC-MS/MS) . Methods: The samples were extracted by 80% methanol water solution and purified by immunoaffinity column. The chromatographic separation was carried out on a C18 column, the mobile phase was methanol-acetonitrile-0. 01 mol·L-1 ammonium acetate, and then OTA was detected by MS/MS in an ESI(-)-MRM mode. Results:The limit of detection was 0. 1 μg·kg-1 , the average recoveries ranged from 84. 8% to 91. 2%, and the relative standard deviations ( RSD) ranged from 3. 6% to 8. 1%(n=9). Conclusion:The method is accurate,sensitive and simple, and suitable for the determination of ochratoxin A in Chinese herbs.
10.Comparison between continuous subarachnoid block with ropivacaine or sufentanil either alone or in combination for labor analgesia
Bin HAN ; Mingjun XU ; Ming ZHANG
Chinese Journal of Anesthesiology 2016;36(11):1309-1312
Objective To compare the continuous subarachnoid block with ropivacaine or sufen?tanil either alone or in combination for labor analgesia. Methods Ninety nulliparous parturients who re?quired labor analgesia voluntarily, of American Society of Anesthesiologists physical status Ⅰ or Ⅱ, aged 23-35 yr, with a body height of 155-170 cm, were included in this study. When regular uterine contrac?tion appeared, labor analgesia was performed in the first stage of labor. The parturients were divided into 3 groups ( n=30 each ) using a random number table: ropivacaine group ( group R ) , sufentanil group (group S), and combination of ropivacaine and sufentanil group ( group RS). The spinal catheter was placed at L3,4 interspace. In group R, ropivacaine was given as an initial bolus of (0.6 mg∕ml) 5 ml fol?lowed by an infusion of 0.2 mg∕ml after the analgesia pump was connected. In group S, sufentanil was given as an initial bolus of (1.6 μg∕ml) 5 ml followed by an infusion of 0.2μg∕ml after the analgesia pump was connected. In group RS, the mixture of ropivacaine 0. 3 mg∕ml plus sufentanil 0. 8 μg∕ml was given as an initial bolus of 5 ml, followed by an infusion of the mixture of ropivacaine 0. 1 mg∕ml plus sufentanil 0.1 μg∕ml after the analgesia pump was connected. The analgesia pump was programmed to deliver a 5 ml bolus dose with a 15 min lockout interval, background infusion at a rate of 5 ml∕h, and the total volume of 100 ml in the three groups. The analgesia pump was connected at 30 min after the initial bolus was given, and the infusion was stopped at 2 h after delivery in the three groups. Visual analog scale ( VAS) scores were maintained ≤3. VAS scores were recorded before analgesia and at 5, 10 and 30 min after the initial bolus was given. The interval and duration of uterine contraction were recorded before analgesia, in 0-30 min, 30-60 min and 90-120 min of analgesia periods, and in the second stage of labor. The development of nausea and vomiting, pruritus, lateral episiotomy, assisted vaginal delivery, cesarean section, and post?dural puncture headache and requirement for oxytocin were recorded. Apgar scores at 1, 5 and 10 min after birth were recorded. Results The Apgar score of the newborn was more than or equal to 7 at 1, 5 and 10 min after birth in the three groups. Compared with the value before analgesia, the interval of uterine contraction was significantly prolonged, and the duration of uterine contraction was significantly shortened in the 0-30 min of analgesia period in group R ( P<0.05) , and no significant change was found in the inter?val and duration of uterine contraction in each analgesia period in S and RS groups ( P>0.05) . Compared with group R, the VAS scores were significantly increased at 5 and 10 min after the initial bolus was given, the interval of uterine contraction was significantly shortened, and the duration of uterine contraction was significantly prolonged in S and RS groups, and the incidence of pruritus was significantly decreased in group S ( P<0.05 or 0.01) . Compared with group S, the incidence of pruritus was significantly decreased ( P<0.01) , and no significant change was found in the VAS scores at each time point and interval and du?ration of uterine contraction in each analgesia period in group RS ( P>0.05) . Conclusion Continuous sub?arachnoid block with combination of ropivacaine and sufentanil provides better efficacy for labor analgesia than ei?ther alone.