Value of contrast-enhanced percutaneous ultrasound in the diagnosis of rotator cuff tear subtype / 中国骨伤

OBJECTIVE@#To explore characteristics of contrast-enhanced ultrasound (CEUS) images features and diagnostic value of rotator cuff tear subtypes.@*METHODS@#From January 2019 to March 2022, percutaneous ultrasound-guided subacromial bursography (PUSB) with persutaneous ultrasound-guide tendon lesionography (PUTL) was performed on 114 patients with suspected rotator cuff injury were evaluated, including 54 males and 60 females ranged in age from 35 to 75 years old with an average of (58.8±8.7 ) years old;76 patients on the right side and 38 patients on the left side;the course of disease ranged from 0.13 to 111 months with an average of (10.2±9.8) months. GE LOGIQ E9 color doppler ultrasound diagnostic high frequency(6 to 12 MHz) was used to CEUS Using arthroscopy as gold standard, receiver operating characteristic (ROC) curve was used to evaluate diagnostic efficacy of US, MRI and CEUS for rotator cuff injury, also sensitivity, specificity, positive predictive value, negative predictive value and accuracy were calculated.@*RESULTS@#The sensitivity of US in diagnosing full-thickness tears was 72.1%, specificity was 93.0%, and accuracy was 85.1%. The sensitivity, specificity and accuracy of MRI diagnosis of full-thickness tear were 90.9%, 92.6% and 92.1% respectively. The sensitivity, specificity and accuracy of CEUS in diagnosis of full-thickness tear were 100%. The sensitivity, specificity and accuracy of US in the diagnosis of partial tear were 85.7%, 77.2% and 79.8% respectively. The sensitivity, specificity and accuracy of MRI diagnosis of partial tear were 83.7%, 81.7% and 82.5% respectively. The sensitivity, specificity and accuracy of CEUS in diagnosis of partial tear were 95.7%, 92.6% and 93.9% respectively. There were significant differences in diagnosis results of US, MRI and CEUS for rotator cuff bursa tear (P<0.001). Kapp test showed good consistency between CEUS and arthroscopy in diagnosing rotator cuff tear subtypes (full-thickness and partial tears).@*CONCLUSION@#Using PUSB/PUTL to observe distribution of contrast media in bursa, tendon and joint cavity to evaluate the type of rotator cuff tear, its diagnostic performance is significantly better than US and MRI. Therefore, percutaneous contrast-enhanced ultrasound can be a reliable method for diagnosing subtypes of rotator cuff tears.

Meta-analysis on the contents of trace elements in workers with occupational exposure to lead / 中华劳动卫生职业病杂志

Objective: To quantitatively evaluate the content differences of trace elements in workers with occupational exposure to lead. Methods: In January 2021, relevant literatures on the contents of trace elements in workers with occupational exposure to lead published from 1990 to 2020 were searched through CNKI, Wanfang, VIP, PubMed, web of science and Embase. Screened and extracted the literatures, and evaluated the quality of the included literatures with Newcastle Ottawa Scale. Meta analysis was performed with Review Manager 5.3 software, and standardized mean difference (SMD) and its 95% confidence interval were used as effect indicators. Results: A total of 20 literatures were included, and the quality scores were 5-7. The results of Meta-analysis showed that compared with the control group, the contents of blood zinc (SMD=-1.01, 95%CI: -1.53, -0.49) , hair zinc (SMD=-0.17, 95%CI: -0.33, -0.01) , hair copper (SMD=-0.50, 95%CI: -1.01, 0) , hair iron (SMD=-3.91, 95%CI: -5.80, -2.03) and hair manganese (SMD=-1.09, 95%CI: -2.02, -0.15) in occupational lead exposure group were significantly lower (P<0.05) . Compared with the control group, the content of cobalt in hair of occupational lead exposure group (SMD=1.41, 95%CI: 0.72, 2.10) was higher, and the difference was statistically significant (P<0.05) . There was no significant difference in the contents of blood chromium, blood copper, blood iron, blood manganese, blood selenium and hair nickel between the two groups (P>0.05) . Conclusion: Workers with occupational exposure to lead have abnormal trace elements.

Protective effect of hypoxia inducible factor-1α on intestinal mucosal barrier in sepsis / 中国临床药理学与治疗学

AIM: To investigate the effect and mechanism of hypoxia inducible factor-1α on intestinal mucosal barrier in sepsis. METHODS: SD rats were randomly divided into 4 groups: sham group, sepsis group, sepsis+HIF-1α stimulant (sepsis+DMOG group), sepsis+HIF-1α inhibitor (sepsis+Bay87-2243 group), 6 rats in each group. Sepsis model was established by cecal ligation and perforation (CLP). The levels of inflammatory markers IL-1β, IL-6, TNF-α, oxidative stress markers MDA and antioxidant factors SOD and CAT were detected by ELISA and the expression of HIF-1α in intestinal mucosa was detected by Western blot. The pathological damage of intestinal mucosa was detected by HE staining. RESULTS: Inflammatory factors, oxidative stress factors and HIF-1α were significantly up-regulated in septic rats (P<0.05). The contents of IL-1β, IL-6, TNF-α and MDA in plasma were significantly decreased by intraperitoneal injection of DMOG (P<0.05); the levels of SOD and CAT in plasma were increased (P<0.05), HIF-1α was up-regulated (P<0.05), and the pathological damage of intestinal mucosa was alleviated, with decreased Chiu's score (P<0.05). Oral administration of Bay87-2243 gave the opposite result. CONCLUSION: HIF-1α has a protective effect on intestinal mucosal injury in sepsis. The mechanism may be related to the alleviation of inflammatory response and inhibition of oxidative stress.

Clinico-neuropathological features of isocitrate dehydrogenase 2 gene mutations in lower-grade gliomas / 中华医学杂志(英文版)

BACKGROUND@#Mutations in the isocitrate dehydrogenase 1 (IDH1) and IDH2 genes are important for both the integrated diagnosis and the prognosis of diffuse gliomas. The p.R132H mutation of IDH1 is the most frequently observed IDH mutation, while IDH2 mutations were relatively rarely studied. The aim of the study was to determine the pathological and genetic characteristics of lower-grade gliomas that carry IDH2 mutations.@*METHODS@#Data from 238 adult patients with lower-grade gliomas were retrospectively analyzed. The status of IDH1/2 gene mutations, telomerase reverse transcriptase (TERT) promoter mutations, O-methylguanine-DNA-methyltransferase (MGMT) promoter methylation, 1p/19q co-deletion and the expressions of IDH1 R132H, alpha-thalassemia X-linked mental retardation, and p53 were evaluated. Progression-free survival (PFS) and overall survival (OS) were calculated via Kaplan-Meier estimation using the log-rank test.@*RESULTS@#Totally, 71% (169/238) of patients were positive for IDH mutations, including 12 patients harboring mutations in IDH2. Among the 12 patients with IDH2 mutations, ten patients harbored the R172K mutation, one patient harbored the R172S mutation and one harbored the R172W mutation. Of these, 11 tumors occurred in the frontal lobe and showed morphology typical of oligodendroglioma. The proportion of grade II tumors was higher than that of grade III tumors in IDH2 mutant-gliomas. IDH2 mutations were frequently associated with TERT promoter mutations, 1p/19q co-deletion and MGMT promoter methylation. IDH2 mutations were associated with better outcomes compared with IDH wild-type gliomas (P < 0.05). However, the PFS and OS did not differ from that of IDH1 mutant patients (P = 0.95 and P = 0.60, respectively).@*CONCLUSIONS@#IDH2 mutations are more frequent in oligodendrogliomas and associated with a better prognosis. IDH2 mutations may segregate in distinct clinico-pathological and genetic subtypes of gliomas, and therefore may merit routine investigation.

Artificial cornea preparation using collagen/chondroitin sulfate/fibroblast growth factor composite film / 中国组织工程研究

BACKGROUND:The traditional corneal scaffolds exhibit poor strength and biological compatibility. Little is reported on the artificial cornea prepared by collagen and chondroitin sulfate (CS), which consist of the natural corneal tissue. OBJECTIVE:To prepare the collagen/CS/fibroblast growth factor (FGF) composite artificial cornea with slow-release growth factor, high strength and light transmittance, as well as good biocompatibility. METHODS:Regenerated collagen films were prepared by 1％, 5％, 10％ collagen solutions using flow casting method, and the regenerated collagen film with the best bioactivity that was prepared by 5％ collagen solution was screened through a biomechanical test. Then, the CS/collagen composite film was achieved by cross-linking the CS (2, 20, 80 g/L) with collagen by using N-(3-Dimethylaminopropyl)- N'S-ethylcarbodimide hydrochloride-N-Hydroxysuccinimide. The composite film made of 20 g/L CS was confirmed to have the best transparency, which was used to be mixed with 5, 25, 50 mg/L FGF in PBS for 24 hours to prepare the collagen/CS/FGF composite films. ELISA method was used to detect the FGF level in the supernatant. Afterwards, corneal epithelial cells were co-cultured with regenerated collagen film, collagen/CS composite film and collagen/CS/FGF composite film, respectively. After 48 hours of co-culture, cell proliferation was detected by MTT method, based on which we could screen the optimal collagen/CS/FGF composite film. After co-culture with the collagen/CS/FGF composite film for 48 and 72 hours, cell morphology was observed by confocal microscope and scanning electron microscope, respectively. RESULTS AND CONCLUSION:The release amount of FGF from the composite films was dependent on the initial loading amount of FGF. Meanwhile, FGF released slowly from the three kinds of composite films, and the release amount was 11％, 23％, 30％ at 72 hours after culture, in accordance with the pharmacokinetic process. MTT findings indicated that the optimal loading concentration of FGF was 25 mg/L. Under the microscope, the collagen/CS/FGF composite film promoted the adhesion, growth and proliferation of corneal epithelial cells. To conclude, the collagen/CS/FGF composite film is expected to be an ideal scaffold material for artificial cornea preparation.

Effect of Qishen Yiqi droplet on adenylate contents in myocardium of cor pulmonale rats / 中国中药杂志

Cor pulmonale rat models were induced by a single intraperitoneal injection of monocrotaline(MCT), and the sham group received a single intraperitioneal injection of normal saline. After the model rats received intragastric administration of Qishen Yiqi droplet(QS) for 6 weeks, the contents of adenylate(ATP, ADP and AMP) in right myocardial tissues were measured by HPLC, and then the metabolism changes in myocardium of cor pulmonale rats with QS were investigated. The results showed that ATP, ADP, and AMP were well separated, with a good linearity within a certain range of concentration; and the recovery rates were within the range of 90%-108%. As compared with model group, the level of ATP was significantly elevated in high-dose treatment group; ADP contents showed an increasing trend and AMP contents showed a decreasing trend, indicating that QS could significantly improve energy metabolism system in myocardium. By using the HPLC, a qualitative and quantitative analysis method was given for the determination of ATP, ADP and AMP contents in myocardium, providing a method for energy metabolism measurement in biological samples.

Folic acid modified polyrotaxanes effectively transfer siRNA-CD47 to inhibit the proliferation of melanoma / 药学学报

To investigate the effect that folic acid-modified polyrotaxanes (FPP) transfered siRNA CD47 to inhibit melanoma proliferation, the expression of CD47 in clinical melanoma patients was tested by Western blot and RT-PCR, respectively. Physical performance of FPP (siRNA-CD47:CD47) nanoparticles was tested by Malvern particle size instrument and scanning electron microscope. The clone formation experiment demonstrated that FPP (CD47) nanoparticles inhibited the growth of clones. Invasion assay revealed that FPP (CD47) inhibited migration of B16F10 cells. Tumor bearing mice were used in the experiment to test the efficacy of FPP (CD47) treatment. Compared with the control group, high expression of CD47 was observed in the clinical melanoma patients. FPP (CD47) nanoparticle size at 80 nm exhibited a potential of 10 mV; compared with FPP (Con), fluorescence intensity was significantly reduced to 4.2% and B16F10 cell clone formation was decreased by 91% in the FPP (CD47) treatment. Tumor volume of tumor-burdened mice was decreased by 90% with FPP (CD47) treatment. FPP (CD47) lowered CD47 protein and mRNA expression in the tumor. This study suggests that FPP may transfer siRNA CD47 into the cancer cells to inhibit melanoma growth effectively.

Progress on establishment of animal model of osteoarthritis by intra-articular injection / 中国骨伤

Osteoarthritis (Osteoarthritis, OA) is a common clinical degenerative joint disease with increased incidence rate in recent years. Animal experiment is one of the important ways to explore pathogenesis and treatment of OA, while induced animal model is the most important part in animal experiment. Intra-articular injection of drugs is a classical method for establishing animal model of OA. Choose of animal should follows the principle of correlation, appropriateness and practicability, injections should perform in accordance with experimental purposes and subject, detections means and evaluation methods also should corresponding to experimental reality. The gold standard of OA animal model and intra-articular injections has not build, need further study.

Soft tissue changes observed through musculoskeletal ultrasound in the treatment of knee osteoarthritis with needle-knife / 中国骨伤

<p><b>OBJECTIVE</b>To study soft tissue changes observed through musculoskeletal ultrasound (MSUS) in the treatment of knee osteoarthritis with needle-knife, so as to provide MSUS basis for needle-knife in the treatment of knee osteoarthritis.</p><p><b>METHODS</b>Forty patients with knee osteoarthritis treated in the Third Affiliated Hospital of Beijing University of Chinese Medicine from December 2011 to December 2012 were selected according to inclusion and exclusion criteria. All the patients were treated with needle-knife release method. The VAS scores and knee joint circumference were recorded before treatment and 2 weeks after treatment. The changes of knee joint hydrops articuli and joint synovial thickness were measured through MSUS.</p><p><b>RESULTS</b>The knee pain index was 6.850 +/- 1.417 before treatment and 2.790 +/- 1.299 after treatment;the index after treatment was lower than that of before treatment. The knee joint circumference was 407.320 +/- 45.151 mm before treatment and 391.240 +/- 41.129 mm after treatment; the knee joint circumference decreased after treatment. The amount of hydrops articuli observed by musculoskeletal ultrasound showed that 47 knees were cured, 19 knees improved and 2 knees failed. The synovial membrane thickness: 43 knees cured, 17 knees improved and 8 knees failed.</p><p><b>CONCLUSION</b>The hydrops articuli and synovial thickness of knee joint of patients with knee osteoarthritis observed under the MSUS is consistent with the main symptoms and signs, which suggests that MSUS observation on soft tissue changes before and after needle knife in the treatment of knee osteoarthritis with high reliability.</p>

Analysis of X-rays of cervical imbalances syndrome before and after the treatment of osteopathy and traction intervention in 187 youth cases / 中国骨伤

<p><b>OBJECTIVE</b>To observe X-ray features of before and after treatment of cervical imbalance syndrome with osteopathy and traction intervention in youth patients, then to investigate the clinical effect of the treatment of the cervical imbalances syndrome in youth by osteopathy.</p><p><b>METHODS</b>From September 2007 to December 2010, one hundred and eighty-seven students of 19 to 22 years (means 21 years) with neck pain as the main symptom in Beijing university of Chinese medicine were selected and divide them into osteopathy group and traction groups randomly. In osteopathy group, there were 94 patients including 40 males and 54 females; in traction group, there were 93 patients including 42 males and 51 females. The treatment of osteopathy group lasted for 3 weeks,three times per week; traction group by traction treatment three weeks,three times a week, too. X-ray before treatment and 3 weeks after treatment were collected.</p><p><b>RESULTS</b>The osteopathy group:94 cases, before treatment, abnormal curvature in 57 cases, spinous position change in 45 cases and angular displacement in 44 cases, vertebral sliding in 15 cases, Ruth Jackson line intersect proneness change in 70 cases,stretch change in 47 cases; after treatment, abnormal curvature in 35 cases, spinous position change in 24 cases and angular displacement in 18 cases, vertebral sliding in 3 cases, Ruth Jackson line intersect proneness change in 41 cases, extension change in 33 cases; X-Ray measurement results: cervical curvature improved from (7.070 +/- 4.629) degrees before treatment to (7.660 +/- 4.156) degrees after treatment, angular displacement improved from (13.790 +/- 2.590) degrees before treatment to (11.050 +/- 2.560) degrees after treatment; vertebral sliding improved from (3.770 +/- 0.350) mm before treatment to (3.160 +/- 0.485) mm after treatment. The change of angular displacement and vertebral sliding were so significant before and after treatment in this group, there were statistical defferences between before and after the treatment (P < 0.01) in osteopathy group. The traction group: 93 cases, before treatment,abnormal curvature in 60 cases, spinous position change in 39 cases and angular displacement in 39 cases, vertebral sliding in 15 cases, Ruth Jackson line intersect proneness change in 70 cases, stretch in 47 cases; after treatment,abnormal curvature in 50 cases, spinous position change in 29 cases and angular displacement in 17 cases; vertebral sliding in 3 cases, Ruth Jackson line intersect proneness change in 41 cases, stretch in 33 cases; X-Ray measurement results: cervical curvature improved from (5.590 +/- 4.639) degrees before treatment to (5.990 +/- 4.330) degrees after treatment, angular displacement improved from (13.360 +/- 2.064) degrees before treatment to (11.210 +/- 1.872) degrees after treatment; vertebral sliding improved from (3.790 +/- 0.339) mm before treatment to (3.480 +/- 0.332) mm after treatment. The change of angular displacement and vertebral sliding were also so significant in traction group before and after treatment, there were statistical defferences between before and after the treatment (P < 0.01).</p><p><b>CONCLUSION</b>(1) Pathological changes can be called youth cervical imbalance syndrome. (2) Stress points, angular displacement, cervical vertebral slip, curvature straightened, spinous position change are main X-ray performances. (3) Both osteopathy and traction intervention on are efficient in youth neck pain. (4) Youths cervical vertebra imbalance is early but reversible performance.</p>

Multiple linear regression analysis of X-ray measurement and WOMAC scores of knee osteoarthritis / 中国骨伤

<p><b>OBJECTIVE</b>To perform Multiple Linear Regression analysis of X-ray measurement and WOMAC scores of knee osteoarthritis, and to analyze their relationship with clinical and biomechanical concepts.</p><p><b>METHODS</b>From March 2011 to July 2011, 140 patients (250 knees) were reviewed, including 132 knees in the left and 118 knees in the right; ranging in age from 40 to 71 years, with an average of 54.68 years. The MB-RULER measurement software was applied to measure femoral angle, tibial angle, femorotibial angle, joint gap angle from antero-posterir and lateral position of X-rays. The WOMAC scores were also collected. Then multiple regression equations was applied for the linear regression analysis of correlation between the X-ray measurement and WOMAC scores.</p><p><b>RESULTS</b>There was statistical significance in the regression equation of AP X-rays value and WOMAC scores (P<0.05), while there was no statistical significance in the regression equation of lateral X-ray value and WOMAC scores (P>0.05).</p><p><b>CONCLUSION</b>1) X-ray measurement of knee joint can reflect the WOMAC scores to a certain extent. 2) It is necessary to measure the X-ray mechanical axis of knee, which is important for diagnosis and treatment of osteoarthritis. 3) The correlation between tibial angle,joint gap angle on antero-posterior X-ray and WOMAC scores is significant, which can be used to assess the functional recovery of patients before and after treatment.</p>

Expression of PI3K pathway proteins in refractory epilepsy associated with cortical malformation development / 中华病理学杂志

<p><b>OBJECTIVE</b>To investigate the expression of TSC1, TSC2, p-mTOR, p-4E-BP1, p-p70S6K and p-S6 in refractory epilepsy associated malformation of cortical development (MCD) tissues.</p><p><b>METHODS</b>A total of 43 cases of refractory epilepsy were involved in the study, and all the patients were treated in Xuanwu Hospital during 2005 - 2008, including focal cortical dysplasia type IIa (11 cases) and type IIb (11 cases), tuberous sclerosis complex (10 cases) and ganalioglioma (11 cases), and other 12 cases were used as control. These cases were divided into 7 study groups and immunohistochemical EnVision method was used. To detect the location and intensity of TSC1, TSC2, p-mTOR, p-4E-BP1, p-p70S6K and p-S6 expression in every group. Then the Image-Pro Plus 6.0 image processing and analysis software were used to measure the number, area, integrating absorbance (IA) of positive cells in every samples. The statistical software SPSS 16.0 was used to analyze the data.</p><p><b>RESULTS</b>The immunolocalization of TSC1 and TSC2 was similar. It could be observed the expression of various levels in the cytoplasm of dysmorphic neurons, balloon cells, giant cells, ganglioglioma cells and normal neurons. TSC1 staining in normal neurons was more notably than others but TSC2 staining in giant cells was weaker than other samples. p-mTOR mainly presented in giant cells, which could also be observed in astrocyte. P-4E-BP1 presented in the cytoplasm and nuclear membrane of balloon cells, giant cells and ganglioglioma cells, the staining of giant cells was stronger than balloon cells, but their staining were weaker than ganglioglioma cells. P-p70S6K mainly expressed in giant cells and less commonly presented in balloon cells. P-S6 typically presented in all abnormal glioneuronal cells and it nearly did not present in the normal neurons of N-CTX group.</p><p><b>CONCLUSIONS</b>PI3K pathway, at least in part, involves in the occurrence of MCD, and may play an important role in the pathogenesis.</p>

The clinical application of infrared imaging technology in teenagers with cervicodynia / 中国骨伤

<p><b>OBJECTIVE</b>To compare the temperature distribution of both sides of shoulder, provide objective reference for the application thermoview in the diagnosis of cervicodynia in teenagers.</p><p><b>METHODS</b>Forty-five adolescents with cervicodynias from March 2009 to December 2009 were collected. There were 23 males and 22 females, with an average age of 21 years (ranged from 19 to 22 years). The course of disease ranged from 2 to 20 weeks (averaged 13 weeks). C7 horizontal line were used to divide the back into the neck area and shoulders area, and the midline to subdivide the chosen area into left and right area. Thermal infrared imaging was used to observe the temperature both sides of neck and shoulders, the data was analyzed by the computer.</p><p><b>RESULTS</b>The temperature of shoulder was higher than neck. There were significant differences in the highest and average temperature both of the left and right side of neck and shoulder (P < 0.05), but no difference in the lowest temperature both of left and right side of neck.</p><p><b>CONCLUSION</b>The thermal infrared imaging is important for diagnosing cervical imbalance syndrome, finding the sign of abnormal muscle metabolism of shoulder and providing the basis for prevention.</p>

Diagnostic use of D2-40 and annexin-1 in ependymal tumors / 中华病理学杂志

<p><b>OBJECTIVE</b>To investigate the diagnostic significance of D2-40 and annexin-1 in the ependymal tumors.</p><p><b>METHODS</b>To analyses the expression of D2-40, annexin-1, EMA and Ki-67 by immunohistochemistry in 52 cases of ependymal tumors (48 cases of ependymomas, 4 cases of choroid plexus papilloma) from Xuanwu Hospital from 2005 to 2009. Ten cases of corresponding normal brain tissue were also obtained as control.</p><p><b>RESULTS</b>Thirty-two of forty-eight (66.7%) cases of ependymomas were positive for D2-40. "Dot-like" and "ring-like" structures were commonly observed in ependymomas (55.3%, 21 of 38 cases) and anaplastic ependymomas (5 of 6 cases) with D2-40 staining. There was no difference in the expression between D2-40 and Ki-67 (r(s) = -0.013, P = 0.931). For annexin-1, 87.5% (42 of 48 cases) of the ependymomas were positive. The specific "granular structures" and cilium were observed in ependymomas (1 of 4 cases of myxopapillary ependymomas and 11 of 38 cases of ependymomas respectively) for annexin-1. The difference in expression between annexin-1 and Ki-67 was statistically significant (r(s) = -0.405, P = 0.005). D2-40 in combination of EMA and annexin-1 increased the positive rate to 100% in ependymomas. Choroid plexus papillomas were all positive for D2-40 and annexin-1. The control tissue was negative for D2-40 but positive for annexin-1 in the capillaries.</p><p><b>CONCLUSIONS</b>The specific structures are valuable in diagnosing of ependymal-genetic tumors, and are highlighted by D2-40 and annexin-1. D2-40 in combination of EMA and annexin-1 is a useful diagnostic marker for ependymal tumors.</p>

Multiple intracranial lesions: a clinicalpathologic study of 62 cases / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the clinicalpathologic features of intracranial multiple lesions.</p><p><b>METHODS</b>The clinical, radiologic and pathologic features of intracranial multiple lesions in 62 cases during the period from 2005 to 2009 in Xuanwu Hospital were retrospectively reviewed.</p><p><b>RESULTS</b>There were 32 males and 30 females in 62 cases. The mean age of seize onset and duration of disease were 37.4-year-old and 11.6 months, respectively. The lesions could affect cerebral hemisphere, basal ganglia, brain stem, cerebellum and other parts, most lesions were located above the tentorium. Pathological diagnosis as follows: 13 patients with glioma; metastatic tumors in 13 cases; 12 cases of central nervous system infection; immune-mediated inflammatory demyelinating disease in 8 cases; 5 cases of primary lymphoma of central nervous system; primary angiitis of the central nervous system 3 cases; mitochondrial encephalopathy 2 cases; vein thrombosis in 2 cases; Rosai-Dorfman disease in 2 cases; 2 case of radiation encephalopathy. Among them, mitochondrial encephalopathy and vein thrombosis lesions located in the cortex; metastatic tumor and blood-borne infection mainly involving junction of grey and white matter; glioma, radiation encephalopathy and demyelinating disease include white matter lesions; vascular inflammation showed cortical and subcortical white matter lesions.</p><p><b>CONCLUSIONS</b>A variety of tumor and non-neoplastic diseases can be expressed in intracranial multiple lesions, which gliomas, metastatic tumor and central nervous system infections are more common. In order to improve the diagnosis of intracranial multiple lesions, active work in the brian biopsy, study the clinical, imaging and pathological findings must be closely.</p>

Expression of isocitrate dehydrogenase 1 gene R132H and its diagnostic application in glioma / 中华病理学杂志

<p><b>OBJECTIVE</b>To investigate the immunohistochemical expression of isocitrate dehydrogenase 1 gene (IDH1) R132H in glioma and its diagnostic utility.</p><p><b>METHODS</b>Immunohistochemical study of IDH1R132H expression was performed on formalin-fixed paraffin-embedded tissue samples of 75 gliomas, including 33 cases of grade II, 20 cases of grade III and 22 cases of grade IV tumors. Six cases of pilocytic astrocytoma and 12 cases of gliosis were used as controls.</p><p><b>RESULTS</b>Nineteen in 33 cases of grade II (57.6%), 8 in 20 cases of grade III (40.0%), 6 in 22 cases of grade IV (27.3%) showed positive cytoplasmic staining of IDH1R132H. Scattered invasive glioma cells at the tumor periphery also expressed IDH1R132H. Gliomas involving the frontal lobe showed more strong IDH1R132H staining. In contrast, none of the pilocytic astrocytomas and gliosis showed IDH1R132H staining. Moreover, the rate of p53 immunopositivities were 42.4% (14/33) in grade II, 65.0% (13/20) in grade III and 77.3% (17/22) in grade IV gliomas. There were no statistic correlations between expression of IDH1R132H and p53.</p><p><b>CONCLUSION</b>IDH1R132H tends to express preferentially in low-grade gliomas, and it thus may serve as a valuable marker in distinguishing low grade gliomas from gliosis.</p>

Expression and diagnostic significance of CD34 in brain tumors of patients with refractory epilepsy / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the immunohistochemical expression and diagnostic significance of CD34 in brain tumors of patients with refractory epilepsy.</p><p><b>METHODS</b>Immunohistochemical study for CD34 was performed on formalin-fixed paraffin-embedded tissue blocks of 54 cases of brain tumors occurring in patients with refractory epilepsy. The tumor types included ganglioglioma (GG, number = 21), dysembryoplastic neuroepithelial tumor (DNT, number = 8), tumors/lesions which had the transitional features that between glioneuronal hamartia and mixed neuronal-glial tumor (number = 21) and pleomorphic xanthoastrocytoma (PXA, number = 4). Cases of glioblastoma (number = 4) and oligoastrocytoma (number = 5) were used as controls.</p><p><b>RESULTS</b>Twenty of the 21 cases of GG, 1 of the 8 cases of DNT, 16 of the 21 cases of tumors/lesions which had the transitional features and 3 of the 4 cases of PXA showed cytoplasmic and membranous positivity for CD34. The adjoining brain tissues in 9 of the 18 cases of GG, 6 of the 16 cases of tumors/lesions which had the transitional features and 1 of the 3 cases of PXA also expressed CD34. In contrast, only 1 case of glioblastoma showed membranous positivity for CD34.</p><p><b>CONCLUSIONS</b>CD34 preferred to staining for GG and PXA. Which represent a valuable tool for distinguishing GG, PXA and DNT, oligoastrocytoma, glioblastoma.</p>

Paeoniflorin increases beta-defensin expression and attenuates lesion in the colonic mucosa from mice with oxazolone-induced colitis / 药学学报

Previous studies have demonstrated that the Chinese medicine paeoniflorin, derived from the Ranunculaceae plant peony, peony, purple peony root, was able to have anti-inflammatory, anti-ulcer, anti-hypersusceptibility and anti-oxidation activity. In order to elucidate the pesticide effect and the mechanisms by which paeoniflorin exerts its effect of anti-inflammation and immunoregulation on oxazolone-induced colitic mice, disease activity index (DAI) and histological grading of colitis (HGC) were evaluated in animal model. Moreover, the expressions of HBD-2, IL-6 and IL-10 of mice with experimental colitis were observed with immunohistochemistry and RT-PCR in this study. Results showed that DAI and HGC of oxazolone control group was significantly higher than that of normal control group, and that paeoniflorin groups and 5-ASA group, compared with oxazolone control group, could alleviate the symptoms and histological damages of colitic mice (P < 0.05, P < 0.01). The expression of HBD-2 and IL-6 cytokine on the colon of colitic mice was higher than that of normal control, paeoniflorin and 5-ASA groups (P < 0.05, P < 0.01), but the expression of IL-10 is lower than that of normal control, paeoniflorin and 5-ASA groups (P < 0.05, P < 0.01). The positive correlations were demonstrated between the expression of (HBD-2 and IL-6) and DAI (Pearson r = 0.728, Pearson r = 0.758, P < 0.01, respectively), (HBD-2 and IL-6) and HGC (Pearson r = 0.819, Pearson r = 0.825, P < 0.01, respectively), whereas, the negative correlations were demonstrated between the expression of IL-10 and DAI (Pearson r = -0.789, P < 0.01), IL-10 and HGC (Pearson r = -0.725, P < 0.01). It can be concluded that to some extent paeoniflorin effectively alleviate the symptoms of oxazolone-induced colitis through regulating the expression of HBD-2, IL-6 and IL-10.

Brain tumors in patients with intractable epilepsy: a clinicopathologic study of 35 cases / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the clinicopathologic features of brain tumors occurring in patients with medically intractable epilepsy.</p><p><b>METHODS</b>The clinical, radiologic and pathologic features of brain tumors occurring in 35 patients with intractable epilepsy encountered during the period from January, 2005 to April, 2008 in Xuanwu Hospital were retrospectively reviewed.</p><p><b>RESULTS</b>The mean age of seizure onset and duration of disease were 14.3-year-old and 8.6 years, respectively. Abnormal signals were observed in 94.3% of cases (33/35) by magnetic resonance imaging. The histologic types of brain tumors included ganglioglioma (13/35, WHO grade I and 6/35, WHO grade II), dysembryoplastic neuroepithelial tumor (3/35, WHO grade I), pleomorphic xanthoastrocytoma (3/35, WHO grade II), diffuse astrocytoma (1/35, WHO grade II), oligoastrocytoma (1/35, WHO grade II), angiocentric glioma (1/35, WHO grade I) and meningioangiomatosis (1/35). The 6 remaining cases showed features seen in between glioneuronal hamartoma and mixed neuronal-glial tumor. Most of these tumors were located in the temporal lobe (27/35) and associated with focal cortical dysplasia. Immunohistochemical study showed a remarkable expression of CD34 in gangliogliomas.</p><p><b>CONCLUSIONS</b>Brain tumors in patients with medically intractable epilepsy are almost always benign and located in the temporal lobe. Most of them represent mixed neuronal-glial tumors and some show transitional features in-between glioneuronal hamartoma and mixed neuronal-glial neoplasm. The similar morphologic pattern and biological behavior of glioneuronal hamartoma and mixed neuronal-glial tumor may suggest a common pathogenetic mechanism.</p>

Evaluating the quality of niuhuangjiedu tablets by the systematic quantified fingerprint method / 药学学报

The HPLC fingerprints of Niuhuangjiedu tablets (NHJDT) were established and assessed by systematic quantified fingerprint method. The chromatographic fingerprints (CFPs) were determined by reversed-phase HPLC, in which the CFPs containing 53 co-possessing peaks were marked by choosing baicalin peak as the referential peak. Fifteen batches of NHJDT were identified with hierarchical clustering analysis by using macro qualitative similarities and macro quantitative similarities as variables. According to the results of classification, the referential fingerprint (RFP) was synthesized from 10 batches of NHJDTs. Taking the RFP for the qualified model, the whole 15 batches of NHJDTs were evaluated by the systematic quantified fingerprint method. Among the 15 batches of NHJDT, 9 batches were completely qualified, the relative variance of leveling coefficient of 1 batch was obviously higher while the contents of other 5 batches were lower. The systematic quantified fingerprint method closely integrates the systematic fingerprints with the macro qualitative similarities and macro quantitative similarities to perform the entire qualification and quantitation analyses, which can briefly and effectively assess the quality of Chinese traditional medicine.