1.The collateral ligaments: normal and pathologic appearances on MRI
Wu WANG ; Xuezhe ZHANG ; Yan L
Chinese Journal of Radiology 2000;0(11):-
Objective To evaluate the MR findings of normal and abnormal collateral ligament. Methods The MR findings of 56 normal and 36 surgically confirmed injured collateral ligaments were retrospectively reviewed and compared. Results The normal tibial and fibular collateral ligaments were hypointense string on both T 1 and T 2 coronal MR images, with an average length of 6.8 cm for tibial collateral ligament and 5.7 cm for fibular collateral ligament. 36 collateral ligaments were injured, including 18 tibial and 12 fibular collateral ligaments. Three cases (6 ligaments) had both tibial and fibularcollateral ligaments injuries. The injury of collateral ligament was classified as: Grade I (18 ligaments), Grade Ⅱ (11 ligaments), and Grade Ⅲ (7 ligaments). The complications of anterior cruciate ligament sprains (13 cases), posterior cruciate ligament sprains (9 cases), meniscal tears (12 cases), bony contusion and fracture (7 cases), and joint effusion (20 cases) were found in 25 patients(78%). Conclusion Coronal MR imaging can clearly demonstrate the structure of the knee collateral ligaments, accurately diagnose and classify the ligament injury, and correctly detect the complications. MRI should be used as a routine examining method for knee trauma.
2.Biotransformation of furannoligularenone by cell suspension cultures of Nicotiana tabacum
Chunyan YAN ; Rongmin YU ; Huachong L ; Dezhi ZHANG
Chinese Traditional and Herbal Drugs 1994;0(06):-
Objective To investigate the biotransformation of furannoligularenone by cell suspension cultures of Nicotiana tabacum. Methods Furannoligularenone was added to the medium of the suspension cells of N. tabacum after precultured for 10 d, then they were co-cultured for another 4 d. The biotransformed products were detected with HPLC and isolated by various chromatographic methods. The chemical structures of biotransformed products were elucidated on the basis of their physicochemical pro-perties and spectroscopic data. Otherwise, the influence of co-cultured time on conversion ratio was investigated either. Results The substrate, furannoligularenone (Ⅰ), was successfully biotransformed by N. tabacum cultured cells. Two products, 3-oxo-eremophila-1, 7(11)-dien-12, 8-olide (Ⅱ) and 3-oxo-8-hydroxyeremophila-1, 7(11)-dien-12, 8-olide (Ⅲ) were obtained. After co-cultured for 5 d, the mole conversion ratio of the substrate reached the highest (53.1%). Conclusion It's the first report on biotransformation of furannoligularenone by N. tabacum cultured cells.
4.Alteration of serum free fatty acids during the carbon tetrachloride-induced fatty liver in rats
Ming YAN ; Fanli MENG ; Ruijuan L ; Xiaoqing JIA ; Xiancun ZHAO
Chinese Journal of Pathophysiology 2000;0(08):-
AIM: To investigate the alteration of serum free fatty acids in the carbon tetrachloride-induced fatty liver. METHODS: Drug-induced fatty liver rat models were built by injection 40% CCl_4. Serum free fatty acids were analyzed by gas chromatography. RESULTS: In the composition of serun free fatty acids, polyunsaturated fatty acids [oleic acid C18∶1,(28.672?7.332 ?/mg?L~(-1) vs 41.373?2.180 ?/mg?L~(-1)), linoleic acid C18∶2(16.739?0.871 ?/mg?L~(-1) vs 24.959?5.325 ?/mg?L~(-1)), arachidonic acid C20∶4(6.105?2.656 ?/mg?L~(-1) vs 9.802?0.779 ?/mg?L~(-1)),P
5.The study on influence of complicated diabetes on the prognosis on kidney transplantation
Yan ZHANG ; Bingyi SHI ; Liang WANG ; Bo L
Chinese Journal of Practical Internal Medicine 2000;0(12):-
Objective To investigate the difference in influerce of complicated diabetes on the prognosis of kidney transplantation.Methods Analyze the data of 507 times kidney transplantation and clinical tracing.Results Totally 507 patients with kidney function failure had received 539 times kidney transplantation,52 of whom were connected with diabetes[30 male,(51.4?7.1)age;22 female,(51.6?4.9)age],and 16 cases were pre-transplant,36 cases post-transplant.The other 455 cases were non-diabetes[293 male,(38.7?12.3)age;126 female,(43.5?10.1)age].The prevalence of diversified complications in the group with diabetes was all remarkably higher than the other group.There were 9 cases death in the group with diabetes,and 35 deaths in the other group after kidney transplantation;actually the mortality of diabetes group(17.3%,9/52)was 2.45 times as high as the group without diabetes(7.7%,35/455),especially in pre-transplant diabetes group.Another result was that there was no significant difference in the survival period of the dead patients in group with and without diabetes.Conclusion The possibility for the patients who,suffer from kidney function failure with diabetes to get Kidney transplantation postoperative complications is bigger compared with those without diabetes,and the prognosis is poor.To control diabetes more effectively before and after kidney transplantation perhaps can improve the prognosis of them.
6.Influence of continuous light and benzene exposure on erythrocyte parameters and expression of miRNA-144/451 in mice
QIN Jing yao ; HUANG Xiao wei ; LÜ ; Yan rong
China Occupational Medicine 2022;52(04):361-367
Abstract: Objective
To explore the effects of continuous light and benzene exposure on peripheral blood erythrocyte
- Methods
parameters and expression of miR 144/451 in the bone marrow of mice. This was a 2×2 factorial design. Photoperiod
, ,
factor was set as normal and continuous light levels and mice were treated for 12 hours/12 hours light/dark or 24 hours light
-
respectively. The benzene exposure factor was set as non exposure and exposure levels. Mice were exposed to benzene by static
3 ,
inhalation with a mass concentration of 0.0 and 32.5 mg/m for three hours per day five days per week for a total of four weeks.
, ,
Specific pathogen free male C57BL/6 J mice were randomly divided into negative control group simple continuous light group
- - , ,
simple benzene exposure group and combined exposure group with 12 mice per group. After benzene exposure peripheral
,
blood was collected for the detection of erythrocyte parameters in four periods. After the mice were sacrificed the expression of
- - - -
miR 451a and miR 144 5p was detected by real time fluorescence quantitative polymerase chain reaction in bone marrow
Results ( ), ,
tissues. The hematocrit volume HCT mean corpuscular volume mean corpuscular hemoglobin concentration
( ) -
MCHC and mean corpuscular hemoglobin in peripheral blood and the relative expression of miR 451a in bone marrow tissue
( P< ) ,
were statistically significant only in mice with benzene exposure all 0.05 . Among them the MCHC of benzene exposed
(P< ), ( P< ) -
mice increased 0.05 but the other four indexes decreased all 0.05 compared with non benzene exposed mice. In thenegative control group the change of red blood cells count hemoglobin level and HCT in peripheral blood were rhythmical all
P < ) , ( P > )
rhythmical 0.05 . However the indexes above were out of rhythm all rhythmical 0.05 in the simple continuous light group and the
- ( P >
combined exposure group. The change of hemoglobin level and HCT of peripheral blood were also out of rhythm all rhythmical
) - -
0.05 in the simple benzene exposure group. The relative expression of miR 451a in bone marrow tissues of negative control
( P < ), -
group and simple continuous light group was rhythmical all rhythmical 0.05 while the relative expression of miR 451a in simple
- - ( P > )Conclusion
benzene exposure group and combined exposure group was out of rhythm all rhythmical 0.05 . Benzene exposure
,
induced changes in erythrocyte parameters of mice are independent effect and its mechanism may be related to the rhythmic
- ,
expression disorder of miR 451a in bone marrow tissues. Continuous light exposure benzene exposure and their interactions can
,
interfere with the circadian rhythm of erythrocyte parameters such as red blood cell count hemoglobin and HCT to some extent.
7.Effect of head acupuncture combined with rehabilitation techniques on movement function of upper limbs after stroke
Yan WANG ; Xiao-xing Lü ; Jing LI ; Qiang TANG
Chinese Journal of Rehabilitation Theory and Practice 2002;8(7):440-441
ObjectiveTo study the effect of head acupuncture combined with rehabilitation techniques on movement function of upper limbs after stroke.Methods80 patients with stroke were divided randomly into four groups, group 1 for head acupuncture and rehabilitation techniques, group 2 for rehabilitation techniques, group 3 for head acupuncture and group 4 for control. Fugl Meyer Assessment(FMA) and Facility Assessment For Function of Upper Limbs were applied to assess movement function before and after treatment.ResultsThe scores of FMA and Facility Assessment For Function of Upper Limbs rised more significantly in group 1,2, and 3 than group 4 (P<0.01) and group 1 outgo group 2,3 yet(P<0.05).Conclusions Head acupuncture combined with rehabilitation techniques can improve the movement function of upper limbs of the stroke patients.
8.Causes and features of erythroderma.
Grace F L TAN ; Yan Ling KONG ; Andy S L TAN ; Hong Liang TEY
Annals of the Academy of Medicine, Singapore 2014;43(8):391-394
INTRODUCTIONErythroderma is a generalised inflammatory reaction of the skin secondary to a variety of causes. This retrospective study aims to characterise the features of erythroderma and identify the associated causes of this condition in our population.
MATERIALS AND METHODSWe reviewed the clinical, laboratory, histological and other disease-specific investigations of 225 inpatients and outpatients with erythroderma over a 7.5-year period between January 2005 and June 2012.
RESULTSThe most common causative factors were underlying dermatoses (68.9%), idiopathic causes (14.2%), drug reactions (10.7%), and malignancies (4.0%). When drugs and underlying dermatoses were excluded, malignancy-associated cases constituted 19.6% of the cases. Fifty-five percent of malignancies were solid-organ malignancies, which is much higher than those previously reported (0.0% to 25%). Endogenous eczema was the most common dermatoses (69.0%), while traditional medications (20.8%) and anti-tuberculous medications (16.7%) were commonly implicated drugs. In patients with cutaneous T-cell lymphoma (CTCL), skin biopsy was suggestive or diagnostic in all cases. A total of 52.4% of patients with drug-related erythroderma had eosinophilia on skin biopsy. Electrolyte abnormalities and renal impairment were seen in 26.2% and 16.9% of patients respectively. Relapse rate at 1-year was 17.8%, with no associated mortality.
CONCLUSIONOur study highlights the significant proportion of malignancy-related erythroderma in those whom common underlying causes such as dermatoses and drugs have been excluded. In cases of drug-related erythroderma, traditional medications and antituberculous medications are common causes in our population. Renal impairment and electrolyte abnormalities are commonly seen and should be monitored in patients with erythroderma.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Dermatitis, Exfoliative ; diagnosis ; etiology ; Female ; Humans ; Infant ; Male ; Middle Aged ; Retrospective Studies ; Young Adult
9.Neuroendocrine differentiation in prostate cancer.
Cheng-yu WU ; Yan-qun NA ; Jorge L YAO ; P Anthony di SANT'AGNESE ; Jiao-ti HUANG
Chinese Journal of Pathology 2006;35(9):565-567
Animals
;
Carcinoma, Neuroendocrine
;
metabolism
;
pathology
;
physiopathology
;
Carcinoma, Small Cell
;
metabolism
;
pathology
;
physiopathology
;
Cell Differentiation
;
Chromogranin A
;
metabolism
;
Humans
;
Male
;
Neuroendocrine Cells
;
metabolism
;
pathology
;
Prostatic Neoplasms
;
metabolism
;
pathology
;
physiopathology
10.Sample Preparation and Imaging of Single Adenovirus Particle Using Atomic Force Microscopy in Liquid.
Yan LIANG ; Li CHEN ; Mariska G M van ROSMALEN ; Gijs J L WUITE ; Wouter H ROOS
Chinese Journal of Virology 2015;31(6):601-606
Atomic force microscopy (AFM), as a sophisticated imaging tool with nanoscale resolution, is widely used in virus research and the application of functional viral particles. To investigate single viruses by AFM in a physiologically relevant environment (liquid), an appropriate surface treatment to properly adhere the viruses to the substrate is essential. Here we discuss hydrophobic treated glass coverslips as a suitable substrate for the adhesion of single adenovirus particle (Adenovirus type 5 F35, Ad5F35) when studied with AFM in liquid. From the high resolution AFM images, the orientation of the adhered virus particles can be distinguished. Furthermore, the particles exhibit the expected height of -90 nm. This illustrates that the viruses adhere to the substrate firmly without large deformations. Hence, the described method works well on (fragile) viruses. The described experimental approach can be widely used for AFM studies in liquid of virus structure and mechanics as well as for investigating the interaction of viruses with cellular receptors.
Adenoviridae
;
chemistry
;
Imaging, Three-Dimensional
;
Microscopy, Atomic Force
;
methods
;
Virion
;
chemistry