1.Ultrasonographic diagnosis of hepatobiliary cystadenoma
Xiang XU ; Ling CHEN ; Zhen YE
Chinese Journal of Ultrasonography 2009;18(6):496-498
Objective To explore the characteristics of uhrasonography of hepatobiliary cystadenoma. Methods The ultrasonographic characteristics of 5 cases with hepatobiliary cystadenoma were retrospectively analysed, and compared with the operation and pathology. Results The ultrasonography of 5 cases was multilocular cystic mass,which seems to be,but not indeed communicating with the biliary tree,in which irregular septation was demonstrated in two-dimensional structure and also with perforator vessels along in color Doppler flow imagineg. And in some cases small papillary tuft and small loci of calcification was noted on the septation. Conclusions Muhilocular cystic mass,locating along the biliary tree, however not communicating with the the biliary tree, is an important diagnostic basis of biliary cystadenoma. And it should be distinguished with other cystic tumor in the liver.
2.Reference methods and reference measurement principles in clinical biochemistry
Wen-Xiang CHEN ; Zi-Yu SHEN ; Zhen-Hua YANG ;
Chinese Journal of Laboratory Medicine 2001;0(03):-
Characteristics and measurement principles of reference methods in clinical biochemistry were described.Implementation of reference systems is one of the most effective approaches to improve the accuracy and comparability of clinical laboratory test results.Reference methods are the key components of reference systems.Reference methods should have measurement uncertainties that meet the requirements of the intended use,and thus should be based on reliable measurement principles.For the well-defined biochemistry analytes,reference methods have been almost all based on instrumental analysis.Isotope dilution mass spectrometry (ID/MS) is considered most reliable and has been the major analytical principle of the reference methods.ID/MS analysis is accurate but expensive.Use of other validated instrumental analyses as reference measurement principles would be justified.
3.Application of Amylolytic Lactic Acid Bacterial in Production of L-lactic Acid by Fermentation
Guo-Zhen ZHAO ; Xiang-Feng XIONG ; Chao-Yin CHEN ;
China Biotechnology 2006;0(07):-
To summarize the present situation of research on amylolytic lactic acid bacteria and its amylase,and the fermentation technology of amylolytic lactic acid bacteria.The amylolytic lactic acid bacteria have the ability of secreting amylase,can direct ferment starchy material into lactic acid without hydrolysising processes,simplify the production process,and saving the equipment investment,thereby,decrease the cost of production.Amylolytic lactic acid bacteria isolated from traditional fermented food,or from organic waste and kitchen waste.The mechanism of direct utilize starch raw materials by the amylolytic lactic acid bacteria were introduced,the fermentation technology of amylolytic lactic acid bacteria were compared.Meanwhile it was pointed out that through mutation breeding and genetic engineering methods gain the potent amylolytic lactic acid bacteria,and use the advanced fermentation and separation technology can improve the productivity of lactic acid.
4.Expression of p62 protein in nasopharyngeal carcinoma and its clinical significance
Qiong WU ; Zhen CHEN ; Kun WANG ; Manlin XIANG ; Bin YI
Journal of Chinese Physician 2016;18(2):216-219,223
Objective To investigate the relationship between p62 expression,and occurrence and metastasis of nasopharyngeal carcinomas.Methods Immunohistochemical method was used to analyze p62 expression in 123 nasopharyngeal carcinoma (NPC) cases and 30 chronic nasopharyngitis cases.The clinical pathological characteristics were analyzed.Results The positive rate of p62 protein in chronic nasopharyngitis nasopharyngeal epithelium,non-metastatic NPC tissue,and metastatic NPC tissues was 13.3%,66.67%,and 84.72%,respectively,and the difference was statistically significant.The expression of p62 protein in nasopharyngeal carcinoma patients with lymph node metastasis or distant metastasis was significantly higher than non-metastatic NPC patients (P < 0.01 or P < 0.05).However,the expression of p62 was not related to age,gender,tumor size,and TNM stage (P > 0.05).Conclusions High p62 protein expression in nasopharyngeal carcinoma tissue is closely related to the occurrence and metastasis of nasopharyngeal carcinomas.It provides good reference value to predict NPC malignancy and metastases.
5.Effects of Hyperbaric Oxygen on Muscle Strength and Muscle Tone in Patients with Hemiplegia during Atony Stage
Xueyan ZHANG ; Xiang LI ; Xiaomin ZHEN ; Chen XU
Chinese Journal of Rehabilitation Theory and Practice 2010;16(7):653-654
Objective To observe the effects of hyperbaric oxygen on atony after hemiplegia. Methods40 cases with hemiplegia were divided into 2 groups: treatment group (n=17) accepted hyperbaric oxygen and rehabilitation, while control group (n=23) accepted rehabilitation only. The muscle strength, muscle tone and elderly mobility scale (EMS) were measured before and after treatment. ResultsAfter 20 times of treatment, the muscle strength, muscle tone and scores of EMS improved in both groups (P<0.01), and was more significantly in treatment group than in control group (P<0.05). ConclusionHyperbaric oxygen can facilitate the recovery of muscle strength and muscle tone in hemiplegia patients, and improve their motor function.
6.Application of modified hand-assisted laparoscopic surgery in the abdominal surgery
Yingjun CHEN ; Zuojun ZHEN ; Qingfeng XIANG ; Feiwen DENG ; Zhipeng WU ; Yintao HE
Chinese Journal of Digestive Surgery 2015;14(7):574-577
Objective To investigate the safety and feasibility of modified hand-assisted laparoscopic surgery (MHALS) in the abdominal surgery.Methods The clinical data of 8 patients who underwent long-sleeved MHALS at the First People's Hospital of Foshan between September 2014 and January 2015 were retrospectively analyzed.Among the 8 patients,right liver cancer with intrahepatic metastasis was found in 2 patients,left liver cancer in 1 patient,hepatic peripheral nerve sheath tumor in 1 patient,left retroperitoneal leiomyosarcoma in 1 patient,extra-and intra-hepatic cholangiolithiasis in 1 patient,choledochocyst in 1 patient and ampulla cancer in 1 patient.Laparoscopic protection sleeve went through the middle of incision-retractor,and then wrapped around it about 10 cm.Incision-retractor was fixed at the abdominal incision firstly,laparoscopic procedures were performed when the wrist of assisted hand was bound and fixed by the distal of sleeve.The patients were followed up by outpatient examination and telephone interview till March 2015.Results All the 8 patients underwent successful MHALS,including 1 of right hemihepatectomy in situ,1 of ligation of right portal vein + left liver split (the patient gave up two-stage operation due to intractable ascites and elevated bilirubin),1 of hepatic left lateral lobectomy (the patient underwent hemostatic sutures in open surgery due to hemorrhage of liver's cutting surface),1 of hepatic peripheral nerve sheath tumor resection,1 of left retroperitoneal leiomyosarcoma resection,1 of choledocholithotomy + left hepatectomy + cholecystectomy + T tube drainage,1 of choledochocyst + biliary enteric drainage and 1 of pancreaticoduodenectomy.Four patients had assisted incision of 4 cm,and another 4 patients of 7 cm.Eight patients were followed up for a median time of 3 months (range,2-7 months).The patient who received ligation of right portal vein + left liver split died at postoperative month 3,and the others didn't have recurrence of tumor or lithiasis.Conclusion The MHALS is safe and feasible in the abdominal surgery.
8.The changes of early cognitive function and cerebral hemodynamics in patients with lacunar cerebral infarction
Huiying LI ; Xiaofeng ZHENG ; Shuzhen YANG ; Weilan ZHEN ; Mingyu YANG ; Feilai MEI ; Xiang CHEN
Chinese Journal of Cerebrovascular Diseases 2015;(9):468-473
Objective Toinvestigatethechangesofcognitiveimpairmentandcerebralhemodynamics inpatientswithacutelacunarcerebralinfarctionwithin2weeksafteronset.Methods Nineteenpatients with lacunar cerebral infarction (a patient group)were consecutive enrolled in the study. Twenty-three sex-and age-matched inpatients without ischemic cerebrovascular disease or healthy volunteers of outpatient department over the same period were used as a control group. The cerebral hemodynamic features were evaluated with transcranial Doppler (TCD)breath-holding test and single photon emission computed tomography (SPECT)resting + adenosine stress imaging. Simultaneously,the neuropsychological tests were performed,the Montreal cognitive assessment (MoCA)was performed including executive capacity, structural capacity,memory (including auditory memory,visual memory,and logic memory ),information processing speed,and visual-spatial ability. Results (1 )There were no significant differences in the years of education,hypertension,diabetes,hyperlipidemia,coronary heart disease,and smoking between the 2 groups (all P>0. 05). Compared with the control group,there were significant differences in the MoCA score,visual memory,executive function,structural capacity,and information processing speed of the patient group (all P<0. 05). (2)19 patients completed the SPECT resting + load test (12 in the control group and 7 in the patient group). There were significant differences in the uptake ratio (UR)in the right basal ganglia (8. 91[-2. 48 - 5. 87]and -6. 21 [-10. 39 - 5. 42 respectively])and left frontal lobe UR (11. 62 [2. 93-16. 87]and 1. 04 [-10. 17- 3. 82]respectively)between the patient group and the control group (P<0. 05). (3)26 patients completed the breath-holding test + head-up tilt table test (n=13 in each group]. The vascular motor reactivities were 13 ± 5 on the left and 21 ± 7 on the right, and the breath-holding indexes were 0. 66 ± 0. 26 on the left and 1. 0 ± 0. 4 on the right in the patient group;the vascular motor reactivities were 24 ± 11 on the left and 30 ± 9 on the right,and the breath-holding indexes were 1. 21 ± 0. 57 on the left and 1. 5 ± 0. 4 on the right in the control group. There were significant differencesbetweenthe2groups(P<0.05).Conclusion Attheearlystageoflacunarinfarction,the patients have presented varying degrees of cognitive impairment and the changes of cerebral hemodynamics.
9.Analysis on levels of AA and DHA in breast milk and their influence factors of 514 lactating mothers
Xueyan CHEN ; Yixia WU ; Guoliang LIU ; Zhen DING ; Xiang LI ; Zhenwei GAN ; Lin XIE
Journal of Jilin University(Medicine Edition) 2016;42(2):390-394
Objective:To analyze the levels of arachidonic acid (AA)and docosahexaenoic acid (DHA)in the breast milk of lactating mothers in Changchun City of Jilin Province, and to explore their influence factors. Methods:The lactating mother’s basic information was collected with questionnaire, and the breast milk of lactating mothers on postpartum 22-25 d was obtained and the 3-day 24-hour dietary recall method was used to investigate the dietary intake information of 514 healthy lactating mothers.The Food Composition Table of China 2009 was used to calculate the intakes of five kinds of polyunsaturated fatty acids (PUFAs) in diet of lactating mothers and the gold key nutrition expert system software for corresponding nutrient analysis was used to calculate the amount of various kinds of foods in the lactating mothers’daily diet.The levels of AA and DHA in breast milk were determined with gas chromatography and the linear regression was used to analyze the related factors of AA and DHA levels in breast milk.Results:①The average concentration of AA in breast milk of 514 lactating mothers was (0.08±0.04)g·100 g-1,and the average concentration of DHA was (0.05±0.04)g·100 g-1. ②The single factor correlation analysis results showed that the oil intake was both positively correlated with AA and DHA levels in milk of lactating mothers (r= 0.360,r=0.354,P<0.001),while the intakes of linoleic acid (LA), alpha linolenic acid (ALA),eicosapentaenoic acid (EPA),DHA,dairy and meats and seafood in diet were both negatively correlated with AA (r= -0.321,r=-0.280,r=-0.255,r=-0.299,r=-0.196 ,r=-0.306,P<0.05)and DHA (r=-0.315,r=-0.279,r=-0.175,r=-0.189,r=-0.248,r=-0.142,P<0.05).③The linear regression analysis results showed regression equation that dairy intake (β=-0.265)and EPA intake (β=-0.144)were both negatively correlated with the level of AA (P=0.009),and dairy intake was also negatively correlated with the level of DHA (β=-0.233,P<0.001).Conclusion:The AA and DHA levels in breast milk of lactating mothers didn’t increase with the increasing of intake of milk or dairy products in the study.Moreover there is a competitive relationship between n-6 and n-3 series polyunsaturated fatty acids in the process of metabolism.
10.Association analysis on polymorphisms of ELOVL2 gene and DHA level in breast milk of lactating mothers
Xiang LI ; Zhen DING ; Yixia WU ; Xueyan CHEN ; Guoliang LIU ; Lin XIE
Journal of Jilin University(Medicine Edition) 2015;(6):1230-1234
Objective To investigate the association between rs2281951 and rs3798753 in ELOVL fatty acid elongase2 (ELOVL2 gene)and the docosahexenoic acid (DHA)level in breast milk,and to clarify the influence of the polymorphisms of ELOVL2 gene in the DHA level of breast milk.Methods 209 healthy maternals were selected and signed the consent form and completed the 3-day 24-hour dietary recall questionaire on one day during the 22nd-the 25th day after partum,and 20 mL breast milk was collected.The DHA level in breast milk was detected with gas chromatography.The milk DNA was extracted and two single nucleotide polymorphisms (SNPs) of ELOVL2 gene were detected by Sequenom Mass Array System. UNPHASED 3.012 genetics software was adopted to analyze the quantitative trait of haplotype and the DHA level in breast milk.Results The distribution of genotypic frequencies of rs2281591 and rs3798713 sites in ELOVL2 gene was consistent with Hardy-Weinberg equilibrium (P > 0.05).The dietary fatty acid intakes and the milk DHA levels of maternals carrying different genotypes had no statistically significant differences (P > 0.05 ). The DHA levels in breast milk of maternals carring different rs3798713 (CG)-rs2281591 (AG)haplotypes had no statistically significant difference (χ2 =3.422,df =5,P =0.635).Conclusion Rs3798713 and rs2281951 and constructed haplotypes in ELOVL2 gene are not related to the DHA levels in breast milk.