Objective To investigate the effect of different doses of ioversol on renal function,and to explore early renal injury biomarkers on contrast induced kidney injury and safe ioversol dosage.Methods A total of 158 cases (98 males and 60 females) undergoing cerebral vascular intervention (CVI) in our department was selected with age ranging from 23 to 81 years old (average age 59.70 ± 12.02).Based on ioversol dosage in surgery,patients were divided into three groups:low dose group (≤ 150 ml,n =49),middle dose group (151-200 ml,n =74),and high dose group (＞200 ml,n =35).U-κ,U-λ,urinary transferrin (UTRF),urine microalbumin (UMA),urinary immunoglobulin IgG (UIgG),urine beta2-microglobulin (Uβ2-MG),Uα1-MG,urinary N-acetyl-beta-D-glucosaminidase (UNAG),plasma cystatin C (CysC) and Scr were detected by scattering turbidimetry,immune turbidimetry and fully automatic biochemical analysis pre-surgery 24 h and post-surgery 72 h.Contrast-induced acute kidney injury (CI-AKI) was defined as laboratory increase of Scr value≥44.2 μmol/L or ≥25％ from baseline measurement at 48 hours after surgery.The relationship in ioversol dosage and various factors was assessed by Single and multiple factors binary logistic regression analysis.Results According to the criterion that Scr increase value were ≥44.2 μmol/L,of 158 cases,3 cases occurred CI-AKI,the AKI incidence was 1.90％.Based on the criterion that Scr increase value was ≥25％,33 cases occurred CI-AKI,the incidence was 20.89％.The concentration of U-κ,UTRF,Uα1-MG,UNAG and plasma CysC were significantly different in high dose group compared to low ioversol dose group (P ＜ 0.05),while the other biomarkers had no significant difference (P ＞ 0.05).Conclusions The contrast media-ioversol could lead to CI-AKI;when the dosage of ioversol was more than 200 ml one-time,the concentration of U-κ,UTRF,Uα1-MG,UNAG and plasma CysC increased significantly.U-κ,UTRF,Uα1-MG,UNAG and plasma CysC could predict the early renal injury in patients who undergoing CVI.The rise of U-κ,UTRF,Uα1-MG,UNAG and plasma CysC are related to the dosage of ioversol.Furthermore,possibility of kidney injury is significantly high when ioversol dosage is more than 200 ml one-time.

Objective To study the effect of intratumor angiogenesis and vascular growth factor(VEGF), basic fibroblase growth factor(bFGF), Platelet-derived growth factor (PDGF), and their receptors(flt-1 bFGFR.PDGFR) on the invasion, metaslasis of pancreatic carcimoma(PC) and the relationship between the expressions of three kinds of angiogenic factors, their receptors and microvessel count(MVC). Methods Tis- sue sections of 51 PC and 32 acute or chronic pancreatitis were examined by in situ hybridization for the expression of VEGF bFGF.PDGF, and by immunohistochemistry for the expression of the three kinds of angiogenic factor receptors and MVC. The correlation of the expressions and pathological characteristics of PC were also studied. Results The positive rate of VEGF mRNA,bFGF mRNA, PDGF mRNA and their receptors in PC were significantly higher than that in acute or chronic pancreatistis( P

Amyloidosis ; Cardiomyopathy, Hypertrophic ; Humans

OBJECTIVETo evaluate the laparoscopy combined with transperineal extralevator abdominoperineal excision (TP-ELAPE) for locally advanced low rectal caner.

METHODSClinical data of 12 patients with locally advanced low rectal cancer undergoing laparoscopy combined with TP-ELAPE in our department from May 2013 to March 2015 were retrospectively analyzed. There were 8 male and 4 female patients with median aged of 63 (46 to 72) years. The median distance from tumor lower margin to anal verge was 3.5(2.0 to 4.0) cm. A self-made transanal suit for minimally invasive operation was used to make a sealed lacuna outside the sphincter, thus laparoscope can be applied to perform transperineal operation.

RESULTSAll the patients underwent operations successfully without conversion to open abdominal operation. The median operating time was 206 (180 to 280) minutes with perineal operating time 95(80 to 120) minutes. The median intraoperative blood loss was 120(50 to 200) ml. The median postoperative hospital stay was 12(9 to 18 ) days. Postoperative pathology revealed that all circumferential margins (CRM) were negative. The area of sample horizontal section was (2 824±463) mm(2), and of outer muscularis propria was(2 190±476) mm(2). Postoperative complications included chronic sacrococcygeal region pain in 2 cases, urinary retention in 3 cases, perineal wound infection in 1 case. No perineal seroma, perineal hernia, wound dehiscence and sinus tract formation were observed. Among 8 patients with preoperative normal sexual function, sexual dysfunction occurred in 2 patients. There was no local recurrence and metastasis during a median follow-up of 21(12 to 34) months.

CONCLUSIONLaparoscopy combined with TP-ELAPE has the potential to simplify the operation procedure for low rectal cancer, can ensure the radical treatment and safety of operation, and may be carried out in experienced centers.

Abdomen ; Aged ; Anal Canal ; Blood Loss, Surgical ; Digestive System Surgical Procedures ; methods ; Female ; Humans ; Laparoscopy ; Length of Stay ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; Operative Time ; Perineum ; Postoperative Complications ; Postoperative Period ; Rectal Neoplasms ; surgery ; Rectum ; Retrospective Studies

Objective To investigate the application value of biological mesh in the pelvic floor reconstruction of extralevator abdominoperineal excision (ELAPE) for advanced low rectal cancer (RC).Methods The retrospective cohort study was conducted.The clinicopathological data of 228 patients with advanced low RC who underwent ELAPE in the Beijing Chaoyang Hospital of Capital Medical University between August 2008 and December 2016 were collected.Of 228 patients,174 using biological mesh closure and 54 using primary closure were respectively allocated into the biological mesh group and primary closure group.Observation indicators:(1)intra-and post-operative situations;(2) postoperative complications (including short-term and long-term complications);(3) follow-up and survival situations.Follow-up using outpatient examination and telephone interview was performed to detect postoperative long-term complications,tumor recurrence or metastasis and overall survival up to December,2017.Measurement data with normal distribution were represented as（ x） ±s,and comparison between groups was analyzed using the independent-sample t test.Measurement data with skewed distribution were described as M (range),and comparison between groups was analyzed using the nonparametric test.Comparisons of count data were evaluated by the chi-square test or Fisher exact probability.Results (1)Intra-and post-operative situations:all the patients underwent successful ELAPE.The perineal operation time,time of indwelling perineal drainage-tube and hospital expenses were respectively (60 ± 50)minutes,(11.6 ± 2.4) days,(57 781± 11 337) yuan in the biological mesh group and (50±21) minutes,(8.9± 1.7) days,(53 714± 13 395)yuan in the primary closure group,with statistically significant differences between groups (t =3.327,7.691,-2.203,P＜0.05).The total operation time and duration of postoperative hospital stay were respectively (242±53) minutes,(13.0±5.0) days in the biological mesh group and (228±51) minutes,(12.0±5.0) days in the primary closure group,with no statistically significant difference between groups (t =1.701,1.309,P＞0.05).(2) Postoperative complications:26 and 19 patients in the biological mesh group and primary closure group had respectively perineal wound complications (1 patient combined with multiple complications),showing a statistically significant difference between groups (x2 =10.660,P＜0.05).The perineal wound infection,perineal hernia and disruption of perineal wound were respectively detected in 20,6,1 patients in the biological mesh group and 12,7,3 patients in the primary closure group,showing statistically significant differences between groups (x2 =3.931,5.282,P＜0.05).(3) Follow-up and survival situations:174 patients in the biological mesh group were followed up for 64 months (range,13-112 months),and 54 patients in the primary closure group were followed up for 51 months (range,23-76 months).The local recurrence rate,distal metastasis rate and overall survival rate were respectively 5.17％ (9/174),20.11％ (35/174),77.59％ (135/174) in the biological mesh group and 7.41％(4/54),24.07％(13/54),79.63％(43/54) in the primary closure group,with no statistically significant difference between groups (x2 =0.080,0.389,0.101,P＞0.05).Conclusions The biological mesh in the pelvic floor reconstruction of ELAPE for advanced low RC is safe and feasible.Compared with primary closure,biological mesh closure will extend perineal operation time and time of indwelling perineal drainage-tube,and increase hospital expenses,but doesn't affect total operation time and duration of postoperative hospital stay,meanwhile,it can also reduce the overall perineal wound complications,especially in perineal wound infection,perineal hernia and disruption of perineal wound.

Objective:To observe the multimodal imaging characteristics of combined hamartoma of the retina and retinal pigment epithelium (CHRRPE).Methods:A cross-sectional study was conducted.Sixteen eyes of 16 patients with CHRRPE were enrolled in Second People's Hospital of Yunnan Province from March 2013 to July 2019.Fundus color photography, fundus autofluorescence (FAF), fluorescein fundus angiography (FFA), indocyanine green angiography (ICGA), optical coherence tomography (OCT), optical coherence tomography angiography (OCTA) and multicolor imaging were performed in all patients.The multimodal imaging characteristics were analyzed.This study protocol adhered to the Declaration of Helsinki and was approved by an Ethics Committee of Second People's Hospital of Yunnan Province (No.20130106). Written informed consent was obtained from patients or their guardians prior to any medical examination.Results:Tumors were located in the posterior optic disc, and translucent glial lesions with unclear borders and slight elevations were observed.The surface of the lesions was attached by different degrees of fibroproliferative membrane, and the adjacent vessels were twisted and dilated.The tumors presented flat bulging green reflexes on the retina at the posterior pole by multicolor imaging, and OCT image showed thickened optic disc and retina near the optic disc, structural disorder, high reflectance of the surface, and low reflectance of the deep retina below the periretinal membrane.OCTA showed irregular blood flow signals, and the signal of retinal blood vessels was twisted and dilated.FAF showed that the autofluorescence intensity of tumors was weakened to different degrees.Early lesions presented different degrees of blocked fluorescence in FFA.Deformed and tortuous blood vessels were found in the eyes, and telangiectasia showing needle-like punctate strong fluorescence leakage was observed in severe eyes by FFA.ICGA showed no abnormal choroidal vessels.Conclusions:The main imaging features of CHRRPE include abnormal retinal blood vessels in the tumor area and fibrous proliferative membranes on the surface in color image; OCT shows that the retina and the retinal pigment epithelium are involved, and the retina in the tumor is thickened with disordered structure; high reflection OCTA shows irregular internal blood flow signals inside the tumor; FFA examination shows fluorescence obscuration and obviously tortuous retinal blood vessels.Multimodal imaging examinations are helpful for the diagnosis of CHRRPE.

Background Air pollution is a major public health concern. Air Quality Health Index (AQHI) is a very important air quality risk communication tool. However, AQHI is usually constructed by single-pollutant model, which has obvious disadvantages. Objective To construct an AQHI based on the joint effects of multiple air pollutants (J-AQHI), and to provide a scientific tool for health risk warning and risk communication of air pollution. Methods Data on non-accidental deaths in Yunnan, Guangdong, Hunan, Zhejiang, and Jilin provinces from January 1, 2013 to December 31, 2018 were obtained from the corresponding provincial disease surveillance points systems (DSPS), including date of death, age, gender, and cause of death. Daily meteorological (temperature and relative humidity) and air pollution data (SO₂, NO₂, CO, PM_2.5, PM₁₀, and maximum 8 h O₃ concentrations) at the same period were respectively derived from China Meteorological Data Sharing Service System and National Urban Air Quality Real-time Publishing Platform. Lasso regression was first applied to select air pollutants, then a time-stratified case-crossover design was applied. Each case was matched to 3 or 4 control days which were selected on the same days of the week in the same calendar month. Then a distributed lag nonlinear model (DLNM) was used to estimate the exposure-response relationship between selected air pollutants and mortality, which was used to construct the AQHI. Finally, AQHI was classified into four levels according to the air pollutant guidance limit values from World Health Organization Global Air Quality Guidelines (AQG 2021), and the excess risks (ERs) were calculated to compare the AQHI based on single-pollutant model and the J-AQHI based on multi-pollutant model. Results PM_2.5, NO₂, SO₂, and O₃ were selected by Lasso regression to establish DLNM model. The ERs for an interquartile range (IQR) increase and 95% confidence intervals (CI) for PM_2.5, NO₂, SO₂ and O₃ were 0.71% (0.34%–1.09%), 2.46% (1.78%–3.15%), 1.25% (0.9%–1.6%), and 0.27% (−0.11%–0.65%) respectively. The distribution of J-AQHI was right-skewed, and it was divided into four levels, with ranges of 0-1 for low risk, 2-3 for moderate risk, 4-5 for high health risk, and ≥6 for severe risk, and the corresponding proportions were 11.25%, 64.61%, 19.33%, and 4.81%, respectively. The ER (95%CI) of mortality risk increased by 3.61% (2.93–4.29) for each IQR increase of the multi-pollutant based J-AQHI , while it was 3.39% (2.68–4.11) for the single-pollutant based AQHI . Conclusion The J-AQHI generated by multi-pollutant model demonstrates the actual exposure health risk of air pollution in the population and provides new ideas for further improvement of AQHI calculation methods.