Combination of MR-T2 BLADE and Diffusion Weighted Imaging in Differentiating Focal Organizing Pneumonia from Peripheral Lung Carcinoma / 中国医学影像学杂志

Purpose To evaluate the efficacy of T2-weighted imaging combined with diffusion weighted imaging in differential diagnosis of peripheral lung cancer(PLC)and focal organizational pneumonia(FOP).Materials and Methods A total of 36 patients with FOP and PLC diagnosed pathologically in the Affiliated Hospital of Shaanxi University of Chinese Medicine from November 2016 to December 2021 were retrospectively included.Two experienced radiologists independently read MR Images,and measured T2 contrast ratio(T2CR)and apparent diffusion coefficient(ADC)respectively.The T2CR and ADC values of the two groups were compared,and the diagnostic efficacy of MR-T2WI and diffusion weighted imaging was evaluated using the receiver operating characteristic curve.Results Two radiologists demonstrated good inter-observer agreement for T2CR and ADC values(ICC values of 0.951 and 0.955,respectively).The FOP group exhibited significantly higher T2CR and ADC values compared to the PLC group(t=3.920 and 5.819,both P<0.001),with threshold values of 2.29 for T2CR and 1 048×10-6 mm2/s for ADC being identified.ADC values accurately diagnosed FOP in 33 cases and PLC in 28 cases,while T2CR correctly diagnosed FOP in 20 cases and PLC in 33 cases.Combining both T2CR and ADC values resulted in accurate diagnoses of FOP in 29 cases and PLC in 33 cases.The diagnostic accuracy and area under the curve were improved by combining ADC and T2CR values compared with using them alone(accuracy:86.1%vs.84.7%,73.6%;AUC:0.924 vs.0.879,0.740;Z=2.208,P<0.05).Conclusion The combination of T2CR and ADC values aids in distinguishing FOP from PLC,exhibiting a higher diagnostic efficiency compared to their individual use.

Network pharmacology predicts the mechanism and related experimental research on the effective components of Salvia miltiorrhiza and Carthamus tinctorius against cerebral ischemic stroke / 西安交通大学学报(医学版)

【Objective】 To explore the effect mechanism of Salvia miltiorrhiza and safflower on combined anti-ischemic stroke and verify relevant action targets in middle cerebral artery occlusion (MCAO) rat model based on network pharmacology. 【Methods】 ①Traditional Chinese Medicine Systems Pharmacology (TCMSP) and GeneCards databases were used to screen the active components, component targets and ischemic stroke targets of Salvia miltiorrhiza and safflower respectively. The above data were imported into STRING database for protein interaction network analysis, and Cytoscape3.8.0 software was used to construct protein interaction network (PPI) and component target interaction network. Gene Ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway annotation analysis of target genes were performed using David online analysis tool. ② In this experiment, a rat model of ischemic stroke was prepared by using improved MCAO method, and immunohistochemical method and Real-time quantitative polymerase chain reaction (REAL-TIME PCR) to detect the positive expressions of NLRP3 inflammatory body and NF P65 protein in the brain tissue of rats in each group so as to explore the functional mechanism of anti-inflammation reaction against cerebral ischemia injury. 【Results】 ① A total of 87 effective components, corresponding to 253 targets, 1448 targets for ischemic stroke and 161 targets related to drugs and diseases, were screened from the Salvia milticorrhiza and safflower drug pairs. We obtained 730 biological processes, 81 cell components and 128 molecular functions through GO analysis, and 127 signal pathways through KEGG analysis. ②Immunohistochemical method and Real-time PCR determination results showed that compared with control group rats, model group rats had significantly increased tissue NLRP3 inflammatory body and NFkBp65 protein expressions (P<0.01). Compared with those in the model group, NLRP3 inflammatory body and NFkBp65 protein expressions significantly decreased in Dan red compatibility groups and nim horizon groups (P<0.01). 【Conclusion】 Compatibility of effective components in salvia miltiorrhiza, and carthamus tinctorius can further downregulate the release of inflammatory corpuscle NLRP3 through NFkB signaling pathway by blocking inflammatory lesions and thus plays the role of fighting against inflammatory damage.

Mechanism of Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos Component Compatibility on Inflammatory Factor in Brain Tissue of Rats with Ischemic Stroke / 中国实验方剂学杂志

Objective:This study intends to study the regulatory effect and mechanism of the effective components of Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos on inflammatory factors related to cerebral ischemia-reperfusion injury in rats through multiple levels of neuropathology， molecular neurobiology and functional behavior. Method:The 32 male rats were randomly divided into four groups： sham group， model group， Danhong components compatibility group（720 mg·kg-1）， nimodipine （0.5 mg·kg-1）groups，each group of eight male rats.Cerebral ischemia was established by middle cerebral artery occlusion （MCAO） approach. The treatment was performed immediately and at 6 hour after MCAO.Hematoxylin-eosin （HE）staining was used to check the changes of brain histopathology， immunohistochemistry and Real time polymerase chain reaction （Real-time PCR） were used to check the expression of IL-1β and Nrf2 in brain tissue，Western blot was used to detect the protein expression of Nrf2 in brain tissue. The aim is to investigate the treatment mechanism of Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos components in a rat model of cerebral ischemic-reperfusion injury. Result:HE staining results showed， compared with sham group， the surviving neurons amount in the model group was significantly reduced（P<0.01），compared with the MCAO group，the number of surviving neurons in the brain tissue of Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos component compatibility group and nimodipine group was significantly increased（P<0.05，P<0.01）.The results of immunohistochemistry and Real-time PCR showed that，compared with normal group，IL-1β and Nrf2 expression in model group were significantly increased （P<0.01），compared with MCAO group， the expression of IL-1β and Nrf2 in Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos component compatibility group and the nimodipine group was significantly decreased （P<0.05，P<0.01）. Western blot results showed that， compared with sham group， Nrf2 positive expression in model group was much more increased （P<0.01）， compared with MCAO group， the expression of Nrf2 in Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos component compatibility group and the nimodipine group was significantly decreased （P<0.01）. Conclusion:The combination of effective components of Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos can significantly down-regulate the expression of IL-1β and Nrf2 proteins.The mechanism is to activate the protein expression of inflammatory pathways， reduce the apoptosis of nerve cells， and finally inhibit the inflammatory response in the process of ischemic stroke injury.

Correlation between diffusion tensor imaging characteristics of brain white matter and mental symptoms in methamphetamine addiction / 中华放射学杂志

Objective To investigate the changes of brain white matter microstructures in patients with methamphetamine addiction and to analyze the correlation between the changes of brain white matter microstructures and mental symptoms. Methods Twenty-five methamphetamine addictions (MA) and twenty-five healthy controls (HC) were enrolled through community and treatment centres from 2015 to 2016. The data of diffusion tensor imaging (DTI) were obtained on 3.0 T MRI scanner. All the subjects′mental symptoms were assessed by symptom check list-90 (SCL-90). The fractional anisotropy (FA) was compared by the tract based spatial statistic (TBSS). For the comparison of the value of AD, the value of RD and clinical data between two groups, the normal distribution and homogeneity test of variance were carried out first. If the normal distribution and homogeneity of variance were satisfied, the two-sample t test was used, if not, the Mann-Whitney rank sum test was used. The correlation between FA, RD and AD values in white matter differential brain areas and methamphetamine dosage, time and psychosocial scale were analyzed by spearman test. Results SCL-90 scores in group MA were significantly higher than those in HC (P<0.05). Compared with HC group, FA value of right genu of corpus callosum in MA group decreased, and the value of RD value increased significantly (P<0.05). The AD value also decreased in MA group, but there was no significant difference between two groups(P>0.05). There was a positive correlation between FA value of white matter of differential brain area and hostility score in SCL-90 (r=0.450, P=0.024), and a negative correlation between RD value and hostility and paranoid scores (hostility:r=-0.590, P=0.002;paranoid:r=-0.438, P=0.028). Conclusion MA can damage the integrity of the synaptic fibers connecting the frontal lobe of the brain, which is related to multiple mental scores. It suggests that decreased white matter integrity may be one of the neurological mechanisms of mental disorders related to methamphetamine addiction.

Study on Glycolipid Metablism of Mice with Diabetes Induced by Peptide Receptor Antagonist Pro3(GIP) / 现代检验医学杂志

Objective To investigate the metabolic effects of glucose dependent insulinotropic peptide receptor antagomst pro3 (GIP) in induced diabetes mice about blood glucose,triglyceride,cholesterol,leptin and fatty issue.Methods 27 C57 mice were randomly divided into normal group and diabetes mice group,and the mice in diabetes group were fed with high fat food and intraperitoneal injected streptozocin.Then 1 mouse that random blood giucose lower than 16.9 mmol/L was deleted in diabetes group.The rest mice in diabetes group were divided into two groups,diabetes control group,pro3 (GIP) group.Pro3 (GIP) group was given drug pro3 (GIP).The bloodglucose and glucose tolerance were measured.After treatment for 6 weeks,all mice were sacrificed and fatty tissues were collected.Results After 6 weeks,the blood glucose of the pro3 (GIP) group was obviously lower than diabetes control group (t=8.43,P＜0.01),and insulin levers in 0,30,60 and 120 min were obviously lower than diabetes control group (t =3.90,2.60,6.88 and 3.33,P＜0.05).There was significant difference between pro3 (GIP) group and diabetes control group about inflammatory cells.Moreover,leptin in pro3 (GIP) group was obviously lower than in diabetes control group (t =5.04,P＜0.01),but triglyceride,cholesterol,and adiponectin had no significant difference between two groups.Conclusion Pro3 (GIP) can significantly reduce blood glucose,insulin level,leptin of diabetes mice,and attenuate the inflammatory cells infiltration in fatty issue.

CT and MRI diagnostic value of the congenital inner ear malformation incomplete partition type Ⅱdeformity combined with spontaneous CSF otorrhea / 实用放射学杂志

Objective To discuss the diagnostic value of high resolution computed tomography (HRCT)and MRI in the congenital inner ear malformation incomplete partition type Ⅱ deformity(Mondini deformity)combined with spontaneous cerebrospinal fluid (CSF)otorrhea.Methods The imaging data including the multiplanar reformation(MPR)images of HRCT,curved planar reforma-tion(CPR)images and MR hydrography images in three patients complicated with recurrent meningitis were retrospectively ana-lyzed.The anatomic changes of the inner ear and middle ear on the affected side were observed,the clinical and imaging features of this disease were summarized.Results One patient had bilateral incidence of the incompletely separated inner ear,combined with semicircular canal dysplasia and cochlear pipe dilation.Two patients had unilateral onset,one of them had concurrent facial nerve ca-nal dysplasia.Humble stapes floor and the defect of the bottom of the internal auditory canal were seen in all the three patients.Con-clusion HRCT with post-processing technology,and MRI have great significance in the diagnosis of the congenital inner ear malfor-mation incomplete partition type Ⅱ deformity (Mondini deformity)combined with spontaneous CSF otorrhea.

Expression and methylation status of Foxp3 in human hepatocellular carcinoma / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To gain insights into the role of forkhead box protein 3 (Foxp3) in the pathogenesis of hepatocellular carcinoma (HCC) by performing a comparative analysis of Foxp3 mRNA expression and promoter methylation status in HCC and normal liver tissues.</p><p><b>METHODS</b>Thirty-nine HCC and 13 normal liver tissue specimens were evaluated by real-time quantitative PCR and pyrosequencing to measure the expression of Foxp3 mRNA and determine the methylation status of its promoter, respectively. Statistical analyses of the data were conducted by rank-sum test and Spearman's rank correlation coefficient test.</p><p><b>RESULTS</b>The HCC specimens showed significantly higher mRNA expression of Foxp3 (vs. normal liver tissues, Z =-2.770, P =0.0056). Moreover, the HCC specimens showed significant hypomethylation of the Foxp3 promoter site A (vs. normal liver tissues, Z =2.118, P =0.0339), and the Foxp3 mRNA level was negatively correlated with the methylation of site A (rs =-0.344, P =0.046). None of the other four sites in the Foxp3 promoter showed a significant difference in methylation, and the overall methylation was not significantly different between the HCC and normal liver tissues.</p><p><b>CONCLUSION</b>Overexpression and low methylation of Foxp3 may be involved in the oncogenic and progression processes of HCC.</p>

Anatomic study of intramuscular nerve and blood vessel in forearm muscles: an anatomical study / 中华整形外科杂志

<p><b>OBJECTIVE</b>To study the distribution of intramuscular nerve and blood vessels in forearm muscles and to discuss the possibility of dividing the forearm muscles into independent functional units.</p><p><b>METHODS</b>(1) The muscles were dissected in 10 forearms from 5 fresh adult human cadavers and stained with the Sihler's nerve staining; (2) The blood vessels were studied in eight forearm muscles from 4 fresh adult human cadavers with irrigation of a mixture of 30% barium sulfate and gelatin from brachial artery and then X-photographed. All pictures were compared to study the intramuscular distribution of nerve and blood vessels.</p><p><b>RESULTS</b>The intramuscular nerve branches were stained purple-black and visualized clearly. The muscles were classified into three types according to the distribution characters of intramuscular nerve and blood vessels. And the types of muscles could be further subdivided into a and b subtypes.</p><p><b>CONCLUSION</b>According to the neurovascular distribution, the forearm muscles in type II a and type III a can be divided into independent function units for muscle functional transplantation.</p>

Anatomy of buccal and marginal mandibular branches of facial nerve and its clinical significance / 中华整形外科杂志

<p><b>OBJECTIVE</b>To study the course and distribution of buccal and marginal mandibular branches of facial nerve, and its relevance to the treatment of facial paralysis and the protection of facial nerve during surgery.</p><p><b>METHODS</b>12 cadaver heads were dissected (24 specimens). The course of the buccal and marginal mandibular branch and the interconnections between them were observed. The relationship of buccal branch to parotid duct, marginal mandibular branch to the inferior border of mandible were studied. With modified Sihler's staining technique, the distribution of facial nerve branches in innervated mimetic muscles was displayed. These anatomic relationships mentioned above were further confirmed during the operation of 40 patients with facial paralysis.</p><p><b>RESULTS</b>Parotid duct had a constant surface landmark. Buccal branch mainly consisted of 2-3 ramifications in 87.5% of the specimens, while marginal mandibular branch was double or single in 95.9% of the specimens. The buccal branch coursed within the distance between 10.7 mm above and 9.3 mm below the parotid duct, and innervated mimetic muscles of midface. The marginal mandibular branch coursed within the distance between 13.4 mm above and 4.8 mm below the lower border of mandible, crossed superiorly the facial artery and innervated mimetic muscles of lower lip.</p><p><b>CONCLUSIONS</b>There is a close relationship of buccal branch to parotid duct and marginal mandibular branch to facial artery and lower border of mandible. With modified Sihler's staining technique, the original 3-dimensional picture of the intramuscular nerve distribution in human mimetic muscles.</p>

Variation of CD4~+ CD25~+ regulatory T cells in patients with Graves' disease / 中华内分泌代谢杂志

The level of CD4~+ CD25~+ regulatory T cells was assayed in the peripheral blood from the patients with Graves' disease (GD) by floweytometry.CD4~+ CD25~+ regulatory T cells as a kind of non-specific immune cells appear to have no relationship with thyroid function,however,their lowered number in early GD patients suggests that they seem to play an essential role in the pathogenesis of GD.