Objective To analyze the association of DOG1 protein with gastrointestinal stromal tumors(GIST). Methods Seventy-seven patients diagnosed with GIST between January 2005 and June 2010 were enrolled. The DOG1 expression in GIST was determined using immunohistochemistry.The result was compared with that of CD117 and CD34. Results Of 77 GIST patients, the DOG1 was expressed in 74 (96.10%) patients and CD117 in 70 (90. 9%) patients, with no significant difference between DOG1 and CD117 (P＞0.05). DOG1 expression was not related to the risk stratification of the tumor, site, age and gender (P＞0. 05). Of 7 GIST patients with negative CD117,6 patients were positive for DOG1 expression. Whereas 2 of 3 DOG1 negative patients were positive for CD117 expression. Conclusions DOG1, as a novel marker for GIST,has high sensitivity as CD117. It is a good complementarity in diagnosis of GIST when combine DOG1 with CD117, especially in diagnosis of CD117 negative patients. However, the DOG1 can not be used as an index in eveluating the risk stratification of the GIST.

Objective To study the correlation of fingerprint chromatograms of Cinnamomi Ramulus formula granules, decoction pieces and water decoction by HPLC; To investigate the difference of main chemical constituents among different forms. Methods The Diamonsil C18 column (4.6 mm × 250 mm, 5 μm) was used with mobile phase of acetonitrile and 0.1% phosphoric acid at the flow rate of 1.0 mL/min, with detection wave of 280 nm and temperature of 30 ℃. The detection of 10 batches of Cinnamomi Ramulus formula granules, 10 batches of decoction pieces and 10 batches of water decoction were established respectively. Results Totally 12 peaks in the HPLC fingerprint chromatogram from 10 batches of formula granules could be tracked in the water decoction; 10 peaks in the HPLC fingerprint chromatogram could be tracked in the decoction pieces. Three components, such as protocatechuic acid, coumarin and cinnamic acid were verified. Conclusion The main chemical components of Cinnamomi Ramulus formula granules and water decoction are basically the same, and the common component contents have similar proportion.

Objective: To investigate the protective factors and risk factors of nosocomial infection of severe acute respiratory syndrome (SARS) among health care workers (HCWs) , and thus provide the scientific basis for prevention and control of nosocomial infection. Methods: With the case-control study,a standardized questionnaire was used for data collection in three general hospitals where nosocomial infection had occurred. Univariate analysis was done at first. All concerned factors about SARS infection were scanned by using Chi-square test and Fisher' s exact test one by one, and determined as to whether they were risk factors or protective factors according to odd ratio (OR) score. Then, multivariate unconditional logistic regression analysis was used to re-analyze the picked-out factors for finding out which factors played independent roles. Results: Twenty-two factors (nineteen protective factors and three risk factors), among the total fifty-six factors, were significantly associated with SARS infection. Multivariate unconditional logistic regression revealed that factors such as double exposure suits ( OR = 0.053 ), education ( OR =0.072), gloves ( OR =0.102), hands sterilized by iodine ( OR =0.231 ), room air ventilation (OR = 0.32), were significantly protective; conversely, tracheal intubation ( OR = 30.793 ) was a significant risk factor. Conclusion: Strict defense and antisepsis measures were pivotal in preventing SARS infection among high-risk medical personnel. Education about associated knowledge and effective air ventilation were also important factors.

Objective To detect mutations of the ADAR1 gene in three Chinese families with dyschromatosis symmetrica hereditaria (DSH).Methods DNA was extracted from the blood samples of seven patients with DSH and their 33 relatives in three families with DSH as well as from 50 unrelated healthy controls.PCR and direct sequencing were performed to detect mutations in the ADAR1 gene.Results All the patients carried mutations in the ADAR1 gene.Three mutations were identified,including one frameshift mutation c.2433-2434delAG in family 2 and two missense mutations,i.e.,c.1760A ＞ G (p.Y587C) in family 1 and c.3620G ＞ T (p.G1207V) in family 3.No mutations were found in the ADAR1 gene in unaffected individuals in these families or the healthy controls.Conclusion Two novel missense mutations are found in the ADAR1 gene of two Chinese families,which may represent a molecular mechanism underlying the development of DSH.

Objective To evaluate the effects of Guhong Injection on motor dysfunction in rats after cerebral ischemia- reperfusion. Methods The middle cerebral arteries were occluded for 2 hours and re-perfused in Sprague-Dawley rats. They were divided in sham group, model group, Aceglutamide group, Safflowere group and Guhong group, which were intravenously administrated with normal saline, Aceglutamide, Safflower or Guhong 24 hours after operation, and continued for 14 days. They were tested with the beam-walking test after treatment. Tyrosine hydroxylase (TH) immunohistochemical staining was used to investigate the viability of neurons in the substantia nigra. Results The model group spent more time in the beam-walking test than that in the sham group (P<0.01), and it decreased in the Safflower group and Guhong group compared with that in the model group (P<0.05). The TH-positive neurons decreased in the model rat compared with that in the sham group (P<0.001), and increased in both Safflower and Guhong groups compared with that in the model group (P<0.01). Conclusion Guhong administration could significantly improve the motor dysfunction in rats after cerebral ischemia- reperfusion, which might be related to provent the neurons from injury in the substantia nigra.

Objective To describe the clinical, neuroimaging and genetic profiles of amyotrophic lateral sclerosis with frontotemporal lobe degeneration ( ALS-FTLD).Methods From August 2011 to May 2015, patients with FTLD or other types of neurodegenerative dementia were physically examined in detail and electromyography was performed to those with suspected dysarthria, limb atrophy or weakness.Cognitive and behavioral screenings were performed to all ALS patients.Patients with ALS-FTLD entered further analysis of neuroimaging and genetics.Results Among the 8 patients diagnosed as ALS-FTLD, 4 patients began with personality change or amnesia, while diseases in the remaining 4 cases began with limb weakness or dysarthria.Dementia type of 7 cases was behavioral variant FTLD ( bvFTD) and 1 case was diagnosed as semantic dementia.Electromyography of all the 8 patients showed diffuse neurogenic changes.Constructional neuroimaging of 6 patients showed cerebral atrophy predominantly in frontal and temporal lobes.Fluorodeoxyglucose-positron emission tomography was conducted in 5 patients, indicating hypometabolism mainly in frontal and ( or) temporal lobes.NeuroQ analysis revealed that bilateral frontal lobes were the most hypometabolic areas for ALS-FTLD.Among 4 patients who underwent genetic screening, 1 patient was C9ORF72 mutation carrier.Conclusions bvFTD is the major type of dementia in the context of ALS.Metabolic neuroimaging could assist accurate diagnosis, and it reveals that bilateral frontal lobes are the most hypometabolic areas for ALS-FTLD.C9ORF72 gene mutation is an important pathogenic mutation for ALS-FTLD, although it is rare in Chinese population.

Objective To investigate the expression of microRNA-152 in hepatocellular carcinoma, and analyze the correlation of miR-152 expression with the clinicopathological characteristics of hepatocellular carcinoma(HCC) patients. Methods Real-time PCR was used to detect the expression of miR-152 in tissue specimens from HCC and the adjacent non-cancerous hepatic tissues collected from 56 patients who underwent surgical treatment for primary HCC. The association between the expression of miR-152 and the clinical pathological characteristics and prognosis of HCC patients was analyzed. Results The relative expression of miR-152 in hepatocellular carcinoma and corresponding adjacent non-carcinoma tissues were 0.616±0.041 and 0.768±0.042 (P=0.011). The expression of miR-152 was significantly associated with TNM stages (P=0.042), tumor differentiation (P=0.035), metastasis (P=0.048) and venous invasion (P=0.042). There was no significant association between the miR-152 expression and gender, age, AFP level, tumor number or tumor grade. The OS (P=0.035) and PFS (P=0.012) in the low miR-152 expression group were obviously shorter than those in the high miR-152 expression group. Multivariate Cox regression analysis showed that the low expression of miR-152, tumor recurrence and pathological classification were significant independent prognostic factors for the prognosis of hepatocellular carcinoma patients. Conclusion The expression of miR-152 is decreased in hepatocellular carcinoma tissues, and the low expression of miR-152 is significantly associated with TNM stages, tumor differentiation, metastasis, venous invasion and the prognosis of HCC patients.

Background: Acne vulgaris (AV) is a common adolescent skin condition which is mainly caused by Cutibacterium acnes overcolonization and subsequent inflammation. Objective: Our previous studies demonstrated that ethanol extracts of Meconopsis quintuplinervia Regel (EMQ) possess significant antimicrobial properties. However, their protective effects and potential mechanisms against AV remain unclear. Methods: In the present study, the EMQ treatment potential for AV was evaluated in a C.acnes-induced mouse ear edema model, and the EMQ anti-inflammatory mechanism was evaluated in lipopolysaccharide (LPS)-induced RAW264.7 macrophage cells. Results: The results showed that EMQ alleviated edema formation and inflammatory cell infiltration in an acne mouse model by suppressing inflammatory cytokines interleukin (IL)-6, IL-1β, and tumor necrosis factor α expression. Moreover, EMQ inhibited the phosphorylation of MAP kinases (MAPKs) such as p38, JNK, and ERK, the phosphorylation and degradation of IκB-α and the nuclear translocation of nuclear factor kappa B (NF-κB) p65 in LPS-induced RAW264.7 cells. Conclusion These findings suggest the potent anti-inflammatory activity of EMQ is possibly through the regulation of the MAPKs and NF-κB signaling pathways. Inhibition of C. acnes activity combined with a powerful anti-inflammatory effect of EMQ indicated its potential as a novel therapeutic option for AV.

ObjectiveTo investigate the safety and efficacy of endoscopic retrograde cholangiopancreatography （ERCP） combined with electrohydraulic lithotripsy under the direct view of eyeMax biliary-pancreatic imaging system in the treatment of difficult choledocholithiasis. MethodsA retrospective analysis was performed for the clinical data of 12 patients with difficult choledocholithiasis who underwent ERCP and electrohydraulic lithotripsy under the direct view of eyeMax biliary-pancreatic imaging system in Department of Gastroenterology， Jilin People’s Hospital， from May to November 2022. The clinical effect of lithotripsy and lithotomy was observed， and postoperative complications and time of surgical operation were assessed. ResultsAmong the 12 patients， 11 （91.67%） were successfully treated by electrohydraulic lithotripsy under direct view， 9 （75.00%） achieved first-attempt success in lithotripsy， and 11 （91.67%） had complete removal of calculi； 1 patient was found to have stenosis of the bile ducts caused by multiple biliary tract surgeries， and grade Ⅱ intrahepatic bile duct stones above the sites of stenosis were removed under direct view， but there were still residues of grade Ⅲ intrahepatic bile duct stones， which led to the fact that complete calculus removal was not achieved. The mean time of ERCP operation was 91.3±26.2 minutes， including a time of 41.8±22.2 minutes for energy lithotripsy. There were 2 cases of postoperative biliary tract infection which were improved after anti-infective therapy， 2 cases of hyperamylasemia which were not given special treatment， and 3 cases of mild pancreatitis which were improved after symptomatic medication， and there were no complications such as bleeding and perforation. ConclusionERCP combined with electrohydraulic lithotripsy under the direct view of eyeMax biliary-pancreatic imaging system is safe， effective， and feasible in the treatment of difficult choledocholithiasis.