Objective To investigate the clinical features of moyamoya disease complicated with Graves′disease and the efficacy of extra-and intra-cranial revascularization. Methods The clinical data of 4 patients with moyamoya disease complicated with Graves′disease were analyzed retrospectively. Among them,three were females and one was a male. Their mean age was 32 ± 7 years. After medical treatment, their thyroid function was normal. The patients were treated with superficial temporal artery-middle cerebral artery bypass grafting. Results (1) Three patients showed cerebral infarction and one showed frequent transient ischemic attack. DSA confirmed that 2 patients had unilateral moyamoya disease and 2 had bilateral moyamoya disease. Head MRI revealed brain infarcts. (2) The thyroid function was normal after drug treat-ment,the symptoms of moyamoya disease were stable in 3 cases. One patient had high metabolic symptoms, such as high fever and accelerated heart rate within one week after procedure. The patients were followedup for 6 to 18 months,one was good,3 were excellent,and there was no recurrence of Graves′disease. Postoperative head MRI revealed that the 4 patients did not have new brain infarcts. MRA showed that the arterial filling in cerebral sulci in the ischemic lesion areas was obviously improved compared with that before procedure. Retrograde filling of the ipsilateral middle cerebral artery M2-M3 segment was observed in 2 patients. Postoperative single photon emission computed tomography perfusion imaging revealed that the ischemic perfusion lesions on the operated sides were obviously improved compared with those before procedure. Conclusion When complicated with Graves′ disease,the symptoms of moyamoya disease will aggravate. It manifests as acute and chronic cerebral ischemia. After controlling the symptoms of hyperthyroidism,most cerebral ischemic symptoms can be alleviated. Superficial temporal artery-middle cerebral artery bypass grafting may establish an effective collateral circulation and improve the clinical symptoms.

A total of 120 medical students were surveyed to investigate the current status of communication between medical students and old patients and the awareness of medical laws. The questionnaire shows many students don't have enough knowledge of communication skills and medical laws. Furthermore, the most important reason of the medical disputes is the lack of communication between doctors and patients so the cultivation of communication skills and legal knowledge should be strengthened.

Renal cell carcinoma (RCC) is a common lethal urological cancer,the distant metastasis of which is the leading cause of death.Although targeted agents have remarkably improved the overall prognosis of RCC patients,nearly all the patients eventually acquire therapeutic resistance.With the advent of immune checkpoint inhibitors,immunotherapy based on tumor microenvironment (TME) has shown a broad scope in clinical application.The deepening understanding of TME leads to the changes of therapeutic strategies for advanced RCC,and the combination of targeted therapy and immunotherapy is exhibiting a promising prospect.Herein,we reviewed the TME characteristics,candidate predictive biomarkers,and possible targets for future development of drugs against RCC.
Carcinoma, Renal Cell/therapy* ; Female ; Humans ; Immune Checkpoint Inhibitors ; Immunotherapy ; Kidney Neoplasms/therapy* ; Male ; Tumor Microenvironment

In this study, efforts were made to collect 88 traditional Chinese medicine (TCM) prescriptions for treating ADHD from public literatures, establish a medication database and conduct data mining on the efficacy, properties, tastes, meridian entries and compatibility regularity of TCMs by using frequency analysis, association rules analysis and cluster analysis. The results showed 33 herbs with a high frequency (≥ 10%). The top 12 frequently applied ADHD herbs were respectively Acori Tatarinowii Rhizome, Polygalae Radix, Prepared Rehmanniae Radix, Os Draconis, Glycyrrhizae Radix et Rhizome, Poria, Concha Ostreae, Testudinis Carapacis et Plastri, Paeoniae Alba Radix, Schisandrae Fructus Chinensis, Fructus Corni, Dioscoreae Rhizoma. The top seven types of frequently applied ADHD herbs by effect were respectively tonic herb, sedative herbs, livei-wind calming herbs, heat clearing herbs, astringent herbs, awaking herbs and damp clearing and diuresis promoting herbs. The top three properties were warm, cold and neutral, with warm as the dominance. The top three tastes were sweetness, bitterness and acridity, with sweetness as the dominance. The top three meridian entries were liver meridian, heart meridian and kidney meridian. The association rules analysis showed commonly used herbal pairs. Polygalae Radix-Acori Tatarinowii Rhizome, Concha Ostreae-Os Draconis, Prepared Rehmanniae Radix-Fructus Corni-Os Draconis. Eight highly frequent cluster prescriptions were summarized based on the cluster analysis. This study indicates that basic TCM prescriptions for treating ADHD were principally composed of tonics (nourishing liver and kidney, invigorating heart and spleen) and tranquilization, which were supplemented with herbs for calming liver, clearing heat, promoting qi-circulation, promoting blood-circulation, reducing phlegm and calming endogenous wind. The combination of multiple data mining techniques can reflect the clinical medication regularity of herbs for treating ADHD in an overall and objective manner.
Attention Deficit Disorder with Hyperactivity ; drug therapy ; Data Mining ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Meridians

Objective To evaluate the validity of stroke volume variation (SVV) for predicting fluid responsiveness in different grades of intra-abdominal pressure (IAP).Methods Forty pigs were involved in the study.Hypovolemia was made by blood withdraw of 30% of estimated blood volume from each animal via carotid artery.All the pigs were randomized into four groups namly 0 mm Hg (L0), 15 mm Hg (L15), 25 mm Hg (L25) and 35 mm Hg (L35).Nitrogen was inflated slowly till IAP to 0, 15, 25 and 35 mm Hg.Fluid loading was performed with 500 ml hydroxyethyl starch within 30 minutes.Hemodynamic parameters were evaluated by the thermodilution technique of pulse induced continuous cardiac output (PiCCO).SVV and stroke volume (SV) were measured before and after fluid loading.Results In groups L0 and L15, SVV was positive correlated with changes in SV (r=0.888, 0.942, respectively, P<0.05).In groups L25 and L35, there were poor correlations between SVV and changes in SV(r=0.068,-0.114, respectively).Conclusion When IAP was slightly increased up to 15 mm Hg, SVV remains an effectiveness index to predict fluid responsiveness index, however it failed to assess fluid responsiveness effectively when IAP is further raised up to 25 mm Hg or more.

Objective To investigate the value in the diagnosis of tumor of the stomach by hypotonic water filling method com-bined with CT multi planar reconstruction (MPR).Methods CT image data of 21 5 cases with gastric tumor confirmed by operation and pathology in our hospital were analysed retrospectively.Conventional CT enhanced scan was obtained in patients with the stom-ach hypotonic water filling condition,and MPR CT characteristics of lesions were observed.Results In the 21 5 cases of gastric be-nign or malignant lesions,MPR showed 5 pathological types in 210 cases.In the conventional CT examination,the tumor diagnosis rate had obvious improvement in different gastric parts and types of the stomach tumors through CT MPR.Conclusion There is high detection rate in the diagnosis of gastric tumors using hypotonic water filling method with MPR,which can accurately display invasion and metastasis,and reduce the misdiagnosis and missed diagnosis in gastric tumor.

Objective To explore an algorithm to define the threshold value for tumor contouring on 18F-fluorodexyglucose (FDG) PET imaging. Methods A National Electrical Manufacturing Association (NEMA)NU 2 1994 PET phantom with 5 spheres of different diameters were filled with 18F-FDG. Seven different sphere-to-background ratios were obtained and the phantom was scanned by Discovery LS 4. For each sphere-to-background ratio, the maximum standardized uptake value ( SUVmax ) of each sphere, the SUV of the border of each sphere ( SUVborder ), the mean SUV of a 1 cm region of background (SUVbg) and the diameter (D) of each sphere were measured. SPSS 13.0 software was used for curve fitting and regression analysis to obtain the threshold algorithm. The calculated thresholds were applied to delineate 29 pathologically confirmed lung cancer lesions on PET images and the obtained volumes were compared with the volumes contoured on CT images in lung window. Results The algorithm for defining contour threshold is TH% = 33.1% + 46.8% SUVbg/SUVmax + 13.9%/D ( r = 0.994) by phantom studies. For 29 lung cancer lesions, the average gross tumor volumes ( GTV ) delineated on PET and CT are ( 7.36 ± 1.62 ) ml and (8.31 ±2.05) ml, respectively (t = -1.26, P＞0.05). Conclusion The proposed threshold algorithm for tumor contouring on PET image could provide comparable GTV with CT.

Purpose Intravoxel incoherent motion (IVIM) MR is a method developed in recent years which can quantitatively evaluate the diffusion and perfusion characteristics of microenvironment.The aim of this study was to investigate the application value of IVIM in assessing relapsing-remitting multiple sclerosis (RRMS).Materials and Methods A retrospective analysis of the clinical data of 27 patients with RRMS confirmed clinically at the First Affiliated Hospital of Chongqing Medical University from Jun.2015 to Jan.2016 was carried out in the study.All the patients underwent the conventional MRI and IVIM MRI based on multi-b-factor (b values of 10,20,30,40,50,100,150,200,350,500,650,800,1000 s/mm2) with 3.0T MR scanner.The apparent diffusion coefficient (ADC),ADCslow,ADCfast and f values were evaluated since they could reflect the diffusion and perfusion status of RRMS lesions and normal-appearing white matter (NAWM) regions.Results The ADC,ADCslow,ADCfast and f values of the non-enhancing (NE) lesions were significantly higher than those in the NAWM regions both near and far from NE lesions (P＜0.05).However,the ADC,ADCslow,ADCfast and f values in the NAWM regions close to the NE lesions had no significant differences with those in the NAWM regions far from the lesions (P＞0.05).Conclusion The IVIM MRI can measure the diffusion and perfusion status of the lesions and NAWM in RRMS patients,which,therefore,is helpful in speculation of the pathological changes of RRMS lesions and in its injury classification and identification.

Objective To study the benzo(a)pyrene (B[a]P)-induced mRNA expression of aromatic hydrocarbon receptor (AHR) and cytochrome P4501A1 (CYP1A1) genes in rat liver. Methods Rats were injected intraperitoneally with 5, 10 and 15mg/kg of B[a]P. The total RNAs were extracted from rat livers by RNA purification kit, and the mRNA expression of AHR and CYP1A1 genes was determined by reverse transcription polymerase chain reaction (RT-PCR). β-actin was used as the internal control. The mRNA expression of both AHR and CYP1A1 genes was measured at indicated time points (24, 48 and 72h) after B[a]P treatment at three different concentrations (5, 10 and 15mg/kg). Results The mRNA expression of AHR gene increased in a time-dependent manner at the concentration of 10mg/kg but not at 5 and 15mg/kg of B[a]P. The mRNA expression of CYP1A1 gene differed significantly at 48h and 24h in rat livers treated with 10 and 15mg/kg dosage of B[a]P. The mRNA expression of AHR and CYP1A1 genes increased with B[a]P treatment in a concentration-dependent manner. The time-dependent increase in mRNA expression was shown by AHR but not by CYP1A1 gene with B[a]P (10mg/kg) treatment. Conclusion This study demonstrates that toxic B[a]P increases the mRNA expression of both AHR and CYP1A1 genes in vivo, suggesting that B[a]P may play a role in cancer genesis by this way.

Objective To estimate the relative risk for lung cancer associated with genetic polymorphism of T6235C mutation in 3' non-coding region (Msp Ⅰ) of cytochrome P450 1A1 (CYP1A1) and glntathione S-transferase M1 (GSTM1) in the Mongolian population in Inner Mongolian Region of China. Methods Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and multiplex PCR methods were used to analyze blood samples obtained from 263 case subjects and 263 control subjects to determine their genotypes for CYP1A1 and GSTM1.Control subjects were matched with case subjects by ethnic background, age and gender. Results The frequencies of the variant CYP1A1 genotypes (CYP1A1C) and GSTM1-null in lung cancer groups were higher than those in control groups (38.4% vs. 28. 5% and 57.8% vs. 48.0%). The individuals who corried with CYP1A1C genotype had a significantly higher risk of lung cancer (OR=1.56, 95% CI=1.08 to 2.25, P=0.016) than those who carried with non-variation CYP1A1 genotype. The ones who carried with GSTM1-null genotype also had a significantly higher risk of lung cancer (OR=1.49, 95% CI=1.06 to 2.10, P=0.023) than these who carried with GSTM1-present genotype.When combination of polymorphisms of CYP1A1 and GSTM1 genotypes was analyzed, the risk of lung cancer for combination of CYP1A1C and GSTM1-null genotypes was increased significantly (OR=2.084, 95e CI=1.27 to 3.42, P=0.003). Susceptibility to lung cancer was related to smoking (OR=2.10, 95% CI=1.48 to 2.98, P=0.000). Considering smoking status, the risk of lung cancer for combination of smoking and CYP1A1C genotype was remarkably increased (OR=2.76, 950/0 CI=1.74 to 4. 37, P=0.000). It was the same case with combination of smoking and GSTM1-null genotype (OR=4. 38, 95% CI=2.35 to 8.15, P=0.000). Conclusion The polymorphisms of CYP1A1C genotype and GSTM1-null are the risk factors of lung cancer in the Mongolian population in Inner Mongolia Region of China. Smoking is also related to susceptibility to lung cancer. There may be a synergetic interaction between CYP1A1C and GSTM1-null in the elevated susceptibility of lung cancer. Smoking may have a synergetic interaction with CYP1A1C and GSTM1-null in the elevated susceptibility of lung cancer.