Objective To probe the diagnostic value of MRI in wounded feet which were negative on X-ray film.Methods 77 cases with wounded feet displayed normally on X-ray film underwent MRI,using SE/T1WI,TSE/SPIR/T2WI and 3D-water sel.-FFE.Results The abnormalities on MRI were found in 54 cases,of them,47 cases were within 30 days including bone contusion in 20 cases,muscle injury in 12 cases,bone contusion and muscle injury in 6 cases,bone contusion and soft tissue space injury in 2 cases,simple soft tissue space injury in 3 cases,tiny bone fracture in 3 cases and bone fracture in combination with contusion 1 case.7 cases were 30 days after trauma including cancellous bone sclerosis and little ossature deformity.Conclusion MRI is of important value in the wounded feet which are negative on X-ray film and have obvious symptom.

Objective To prepare the mB7-1-GPI-anchored Lewis vaccine and investigate its antitumor effects. Methods mB7-1-GPI was incorporated on Lewis tumor cells and mB7-1-GPI-anchoring tumor vaccine was prepared. The anti-tumor immunity induced by the prepared mB7-1-GPI-anchored Lewis tumor cell vaccine in tumor-bearing mice was observed. Results Flow cytometric analysis showed that mB7-1-GPI were positively expressed on the surface of Lewis tumor cells. After Lewis tumor cells incubated with mB7-1-GPI, the positive rate (PR) of mB7-1 antigen was 95.8% (0h), 93.6% (4h), 91.1% (8h) and the fluorescence intensity (FI) was 11.2(0h), 10. 6(4h), 9. 8(8h). The IL-2 and IFN-γ production of splenic lymphocytes + lewis cells was (25.9 ± 1.4) pg/ml, (56. 0± 3. 5 ) pg/ml. The IL-2 and IFN-γ production of splenic lymphocytes + lewis/mB7-1-GPI was ( 871.3 ± 10. 4 ) pg/ml, ( 1329. 0 ± 11.9 ) pg/ml. In 25 days, the mean diameter of tumor of Lewis/mB7-1 -GPI was shorter than Lewis( 1.4 ± 0. 21 )cm & ( 2. 5 ± 0. 27 )cm , P ＜ 0. 05 ). Lewis tumor cell-bearing C57BL/6 mice treated with Lewis/mB7-1-GPI vaccine survived much longer than mice treated with Lewis vaccine ( 75.2 ± 2. 0 ) d & (40. 2 ± 2. 0 ) d ( P ＜ 0. 05 ). Conclusion The Lewis tumor vaccine prepared with mB7-1-GPI fusion protein significantly inhibited the tumor growth in Lewis bearing mice. It represented an useful new strategy for attaching immunological factor onto tumor cell surfaces without genetic manipulation.

Purpose To investigate the multi-slice spiral CT (MSCT) features ofchromophobe renal cell carcinoma (CCRC),renal oncocytoma (RO) and clear-cell renal cell carcinoma (CCRCC) for the improvement of its diagnostic accuracy.Materials and Methods The MSCT data of 15 CCRC cases,8 RO cases,and 29 CCRCC cases confirmed by surgery or pathology at Dong H ua Hospital from October 2012 to April 2016 were retrospectively studied.The CT signs of different tumors were compared.Results Most CCRCC cases had cystic degenerations,which showed significant difference with CCRC and RO cases (P＜0.05);RO cases were found mostly with star-shaped scars,which had significant difference with CCRCC cases (P＜0.05);the enhanced scanning showed most of CCRC were enhanced homogeneously,which presented significant difference from CCRCC (P＜0.05).The lesion-kidney-ration (LKR) of CCRCC at cortical phase,parenchymal phase or excretory phase was significantly different from that of CCRC (P＜0.05);the LKR of CCRCC at cortical phase was significantly different from that of RO (P＜0.05);the LKR of CCRC at the three phases were all significantly different from that of RO (P＜0.05).The average △ LKR value of CCRCC was significantly different from that of CCRC and RO (P＜0.05);there was a certain degree of difference distribution of their △ LKR among the three kinds of cases.Taking CCRCC as object,when the LKR at cortical phase was 0.693 or △ LKR was 0.068,the sensitivity reached 93.3％ and the specificity reached 72.2％ or 88.9％ respectively in evaluating the differential diagnosis of CCRC and RO.Taking RO as object,when the LKR was 0.656 at cortical phase or was 0.595 at parenchymal phase,the sensitivity reached 83.3％ and 91.7％ respectively,and the specificity was 75.0％ and 58.3％ respectively,in evaluating the differential diagnosis of CCRC.Conclusion Enhanced MSCT at different phases,especially the calculation of LKR and △ LKR value,can benefit the diagnosis of CCRC,RO and CCRCC.

Objective:To investigate the risk factors of hematoma enlargement or rebleeding in the short term after decompressive craniectomy in patients with cerebral hemorrhage.Methods:The clinical data of 209 cerebral hemorrhage patients underwent decompressive craniectomy from January 2019 to October 2021 in the Second Affiliated Hospital of Zhejiang University and Keqiao District Traditional Chinese Medicine Hospital of Shaoxing City were retrospectively analyzed. According to the head CT result at the time of consultation and 24 h after the onset, the patients were divided into hematoma enlargement and rebleeding group (group A, 28 cases), hematoma enlargement group (group B, 47 cases), rebleeding groups (group C, 13 cases), non-hematoma enlargement and non-rebleeding group (group D, 121 cases). The gender, age, body mass index, time of first CT examination, first bleeding volume, admission Glasgow coma score (GCS), admission systolic pressures, admission diastolic pressure, admission activated partial thromboplastin time (APTT), admission alanine aminotransferase (ALT), admission white blood cell count, hematoma site, broken into the ventricle, irregular hematoma, timing of operation, maximum body temperature of 24 h after admission, intraoperative hemostasis and unsatisfactory on postoperative blood pressure control were collected. Multifactor Logistic regression analysis was used to analyze the independent risk factors of hematoma enlargement or rebleeding in the short term after decompressive craniectomy in patients with cerebral hemorrhage.Results:There were no statistical difference in sex composition, age and body mass index among 4 groups ( P>0.05). The incidences of admission systolic pressures ≥140 mmHg (1 mmHg = 0.133 kPa), admission diastolic pressure ≥90 mmHg, admission APTT≥37 s, admission ALT≥40 U/L, admission white blood cell count ≥10 × 10 9/L, admission GCS, maximum body temperature of 24 h after admission ≥ 37 ℃, first bleeding volume ≥ 60 ml, time of first CT examination ≥3 h, time from onset to operation ≥ 12 h, irregular hematoma, hematoma in the thalamus, broken into the ventricle, intraoperative hemostasis, unsatisfactory on postoperative blood pressure control in group A were significantly higher than those in group B, group C and group D: 92.86% (26/28) vs. 55.32% (26/47), 7/13 and 23.97% (29/121); 89.29% (25/28) vs. 51.06% (24/47), 6/13 and 17.36% (21/121); 92.86% (26/28) vs. 48.94% (23/47), 6/13 and 14.88% (18/121); 78.57% (22/28) vs. 42.55% (20/47), 5/13 and 16.53% (20/121); 89.29% (25/28) vs. 53.19% (25/47), 7/13 and 18.18% (22/121); 89.29% (25/28) vs. 57.45% (27/47), 7/13 and 23.14% (28/121); 92.86% (26/28) vs. 55.32% (26/47), 7/13 and 23.97% (29/121); 85.71% (24/28) vs. 48.94% (23/47), 6/13 and 16.53% (20/121); 89.29% (25/28) vs. 53.19% (25/47), 7/13 and 23.14% (28/121); 89.29% (25/28) vs. 44.68% (21/47), 6/13 and 17.36% (21/121); 96.43% (27/28) vs. 51.06% (24/47), 7/13 and 22.31% (27/121); 67.86% (19/28) vs. 46.81% (22/47), 6/13 and 20.66% (25/121); 89.29% (25/28) vs. 42.55% (20/47), 6/13 and 18.18% (22/121); 92.86% (26/28) vs. 53.19% (25/47), 7/13 and 20.66% (25/121); 89.29% (25/28) vs. 48.94% (23/47), 6/13 and 16.53% (20/121), the incidences in group B and group C were significantly higher than those in group D, and there were statistical differences ( P<0.05); there were no statistical differences in the incidences between group B and group C ( P>0.05). Multifactor Logistic regression analysis result showed that maximum body temperature of 24 h after admission ≥ 37 ℃, time from onset to operation ≥12 h, hematoma in the thalamus, intraoperative hemostasis and unsatisfactory on postoperative blood pressure control were the independent risk factors of hematoma enlargement or rebleeding in the short term after decompressive craniectomy in patients with cerebral hemorrhage ( OR = 3.271, 25.739, 4.255, 3.995 and 13.749; 95% CI 1.072 to 9.977, 7.711 to 85.919, 1.297 to 13.954, 1.252 to 12.747 and 3.961 to 47.732; P<0.05 or <0.01). Conclusions:After decompressive craniectomy, some patients with cerebral hemorrhage may have hematoma enlargement or rebleeding in the short term. The admission body temperature, hematoma site, intraoperative hemostasis, postoperative blood pressure control and operation timing are influencing factors, and the corresponding intervention may help to prevent the occurrence of hematoma enlargement or rebleeding in a short term.

Objective:To investigate the correlation between asymmetrically prominent cortical veins (APCV) on susceptibility-weighted imaging (SWI) and early neurological deterioration (END) in patients with acute ischemic stroke.Methods:From October 2016 to September 2018, patients with acute ischemic stroke admitted to the Department of Neurology, Donghua Hospital Affiliated to Sun Yat-sen University were enrolled retrospectively. They completed MRI within 3 d of onset. APCV was evaluated using SWI. END was defined as the National Institutes of Health Stroke Scale (NHISS) score at any time point within 7 d after the onset increased by ≥2 or the motor function item score increased by ≥1 from baseline. Multivariate logistic regression analysis was used to determine the independent correlation between APCV and END. Results:A total of 133 patients with acute ischemic stroke were enrolled, including 40 females and 93 males, with a median age of 57.3 years (interquartile range: 47.5-67.5 years). Baseline NIHSS score was 5.9±5.0. Fifty-one (38.3%) patients had APCV, and 38 (28.6%) had END. The proportions of APCV, ipsilateral large vessel stenosis, and patients receiving anticoagulation after admission were significantly different between the END group and the non-END group ( P<0.05). Multivariate logistic regression analysis showed that after adjusting for age and gender, APCV was an independent risk factor for END in patients with acute ischemic stroke (odds ratio 6.907, 95% confidence interval 2.798-17.052; P<0.001). Conclusions:APCV on SWI was an independent risk factor for END in patients with acute ischemic stroke.

Objective To explore the value of magnetic resonance relaxation time quantitative imaging in predicting molecular subtypes of invasive ductal carcinoma(IDC)of breast.Methods A total of 79 IDC patients underwent routine magnetic resonance imaging(MRI)scanning and relaxation time quantitative imaging.According to immunohistochemical results of lesions,patients were divided into different immunohistochemical index groups and molecular subtype groups.The differences in MRI signs,T1 values and T2 values of lesions were statistically compared between each group.Patient operating characteristic(ROC)curve was used to evaluate values of T1 and T2 alone and the combination of them in differential diagnosis of IDC molecular subtypes.Results There were 82 samples of lesion in 79 patients,in which,Luminal A type 16(19.51%),Luminal B1 type 11(13.41%),Luminal B2 type 27(32.93%),tyrosine kinase receptor-2 overexpression type(Erb-B2)14(17.07%)and TNBC 14(17.07%).There were no significant differences in patient age,lesion distribution,maximum diameter,morphology,margin and enhancement performance between patients with various molecular subtypes(P>0.05).Among the immunohistochemical indexes,only the Ki-67 positive group had higher T1 value than the negative group(P<0.05).In ROC analysis,the critical T1 value of Ki-67 positive lesions was 2 145 ms,Yoden index was 0.368,the sensitivity was 53.47%,the specificity was 83.33%and the area under the curve(AUC)was 0.640(95%CI:0.527-0.744).There were no significant differences in T1 and T2 values between Luminal A,Luminal B1,Luminal B2,Erb-B2 enriched and TNBC subtypes(P<0.05).T1 and T2 values were lower in Luminal type lesion than those of TNBC type lesion(P＜0.05).ROC curve analysis showed that the combined T1 and T2 values were more effective in differentiating Luminal/TNBC type than those of T1 and T2 values alone.Conclusion T1 mapping can be used as one of the methods to predict the high or low expression levels of Ki-67 in IDC tumors.The combination of T1 and T2 values can improve the ability to predict Luminal/TNBC subtypes.

Sec61β, a subunit of the Sec61 translocon complex, is not essential in yeast and commonly used as a marker of endoplasmic reticulum (ER). In higher eukaryotes, such as Drosophila, deletion of Sec61β causes lethality, but its physiological role is unclear. Here, we show that Sec61β interacts directly with microtubules. Overexpression of Sec61β containing small epitope tags, but not a RFP tag, induces dramatic bundling of the ER and microtubule. A basic region in the cytosolic domain of Sec61β is critical for microtubule association. Depletion of Sec61β induces ER stress in both mammalian cells and Caenorhabditis elegans, and subsequent restoration of ER homeostasis correlates with the microtubule binding ability of Sec61β. Loss of Sec61β causes increased mobility of translocon complexes and reduced level of membrane-bound ribosomes. These results suggest that Sec61β may stabilize protein translocation by linking translocon complex to microtubule and provide insight into the physiological function of ER-microtubule interaction.
Animals ; COS Cells ; Caenorhabditis elegans Proteins ; genetics ; metabolism ; Cell Line, Tumor ; Cercopithecus aethiops ; Endoplasmic Reticulum ; metabolism ; Homeostasis ; Humans ; Microtubules ; metabolism ; SEC Translocation Channels ; deficiency ; genetics ; metabolism