Objective To investigate the therapy efficiency and complication prevention in patients undergoing radiofrequency current catheter ablation combined with multiple X-ray projecting angles.Methods Two hundred and six atrioventricular nodal reentrant tachycardia (AVNRT) patients were involved in this study. The distance between the tip of His and the ostium of coronary sinus were measured under different X-ray projecting angles respectively, including posterior anterior (PA), right anterior oblique 30° (RAO 30° ) and left anterior oblique 45° (LAO 45° ) in each patient, and mapping was proceeding under the corresponding X-ray projecting angles with the longest distance. The distance between ablating catheter and His was confirmed again before powering by the other two X-ray projecting angles. Results The longest distance between the tip of His and the ostium of coronary sinus were obtained in 66,75 and 65 patients under PA,RAO 30° and LAO 45° respectively(P＞ 0.05 ),and the data were (2.94 ± 0.87), (2.98 ± 0.76)and (2.91 ± 0.52) cm(P＞ 0.05). Transient first or second degree of atrioventricular blocking was observed in 4 cases among 22 high risk patients in which the powering sites were above the medium level of the distance between the tip of His and the ostium of coronary sinus under three kinds of X-ray projecting angles obviously.However,only 1 case was observed in other 184 patients(P＜ 0.01 ). All patients were cured successfully and no permanent atrioventricular blocking occurred. Conclusion Radiofrequency current catheter ablation combined with multiple X-ray projecting angles is helpful to increasing the successful rate and preventing complication in ablating therapy.

Objective To compare the clinical outcomes of segmental pulmonary veins isolation (SPVI) and circumferential pulmonary veins ablation (CPVA) for patients with paroxysmal atrial fibrillation. Methods Sixty-eight patients with paroxysmal atrial fibrillation from January 2004 to April 2008 were divided into SPVI group (30 cases) and CPVA group (38 cases).The mean procedure time,the mean fluoroscopy time and relapse rate were compared. Results The mean procedure time in CPVA and SPVI group had no significant difference [(171.0 ± 25.8) min vs (168.2 ± 21.7) min, P = 0.579], but the mean fluoroscopy time in CPVA group [(38.5 ± 8.4) min]was less than that in SPVI group [(45.8 ± 16.1) min (P= 0.019). Mean term of the follow up was (17.1 ± 7.8) months. Relapse rate in CPVA group was less than that in SPVI group (5.3% vs 23.3%, P= 0.029). Both groups had no severe complications. Conclusion In patients with paroxysmal atrial fibrillation, CPVA strategy provides a more favourable clinical outcomes and less fluoroscopy time.

Objective To provide molecular genetic basis for oncobiological difference in left sided colon cancer and right sided colon cancer. Differentially expressed proteins in left sided colon cancer and right sided colon cancer were screened by proteomic technique. Methods Tissue samples including left sided colon cancer and right sided colon cancer were collected and preserved in the -80℃ refrigerator. In the first part of our experiment, protein was separated by 2-dimensional gel electrophoresis (2-DE) and the images of the gels were acquired by the scanner and then analyzed to find the differentially expression protein-spots in different groups. The peptide mass fingerprintings (PMF) was acquired by matrix assisted laser desorptiorn/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) and the proteins were identified by data searching in the Mascotdatabase. Differentially expressed proteins were assayed by RT-PCR, Western blot, and immunohistochemical method. Results Altogether 55 differentially expressed protein spots were screened and 21 spots of them were identified. Compared with the right sided colon cancer, 14 proteins were up-regulated and 7 proteins down-regulated including HSP27 in the left sided colon cancer. HSP27 expressed higher in the right sided colon cancer than in the left sided colon cancer.Conclusion There are differentially expressed proteins in left sided colon cancer and right sided colon cancer, especially difference in HSP27 expression at mRNA and protein level, which may be molecular genetic basis for oncobiological difference in left sided colon cancer and right sided colon cancer.

OBJECTIVETo optimize the experimental model of nitric oxide (NO) production in mouse peritoneal macrophages in response to lipopolysaccharides (LPS) stimulation.

METHODSMouse resident peritoneal macrophages were collected by lavaging the peritoneal cavity of mice with Hank's solution and stimulated with Pseudomonas aeruginosa LPS for NO production. NO concentration in the culture supernatants was measured with Griess Reagent. The influences of cell density, LPS concentration, LPS stimulation duration and culture medium volume on NO production were investigated. Finally, the feasibility of the model was confirmed with specific anti-inflammatory drugs.

RESULTSThe density of macrophages produced the most significant effect on NO production (P<0.001), and optimal results were obtained at the macrophage density of 6×10(6) cells/ml with a volume of 100 µl in each well in 96-well plate. At a LPS concentration below 1 µg/ml, NO production increased proportionally with the increment of LPS concentration (P<0.001), but the increment of NO production declined obviously at LPS concentrations beyond 1 µg/ml, and the peak NO production occurred at a LPS concentration of 10 µg/ml. NO production also increased significantly with the prolongation of LPS stimulation (P<0.05), and the increments were greater within 24-48 h than those in 48-72 h. NO content in the culture supernatant was associated with the medium volume, and the highest level occurred in a system volume of 100 µl. Aspirin (1 mmol/L), dexamethasone (10 µmol/L), and cyclosporin A (10 µmol/L) all significantly inhibited LPS-stimulated production of NO in mouse resident peritoneal macrophages (P<0.001).

CONCLUSIONSMacrophage density, LPS concentration, and the duration of LPS stimulation are the main factors affecting LPS-stimulated NO production in mouse resident peritoneal macrophages. The optimal results can be obtained with a macrophage density of 5×10(6) cells/ml (100 µl per well), LPS concentration of 10 µg/ml, LPS stimulation duration of 24 h or 48 h, and a culture medium volume of 100 to 200 µl.

Animals ; Cells, Cultured ; Female ; Lipopolysaccharides ; pharmacology ; Macrophages, Peritoneal ; drug effects ; secretion ; Male ; Mice ; Mice, Inbred Strains ; Nitric Oxide ; biosynthesis

Objective To study the application of pediculated skin flaps in the treatment of com-plicated long urethratresia. Methods From March 1999 to May 2006, a total of 18 male patients with complicated long urethratresia were treated by using the pediculated skin flaps. The causes of urethratresia were 7 cases of postoperative pelvic fractures with posterior urethral stricture, 4 cases of transurethral intravesical chemotherapy, 3 cases of postoperative bulbar urethral stricture, 2 cases of gonorrhea, and 2 cases of long-time urethral catheter placement. Four cases were urethratresia nf cor-pus penis, 7 cases were anterior urethral obliteration, 7 cases were posterior urethral and anterior ure-thral obliteration. Urethro-perineal fistulas were found in 8 cases, posterior urethrorectal fistulas in 7 cases, false passage formations in 8 cases. The average length of urethratresia was 15.1 cm (range 8. 7 to 23. 0 cm). The urethral scar was rasected, the posterior urethrorectal fistula was repaired, and different kinds of pediculated skin flaps depending on the length of urethratreaia was used. Results All the patients were followed up for 12 to 18 months (mean 14 months). Fifteen patients voided well 3 months postoperatively, none of the urography showed stricture. The mean peak urinary flow rate was 16. 9 ml/s (range from 16. 5 to 21.7 ml/s). Of the other 3 cases, 1 case experienced difficult voi-ding due to the long and circuitous tabularized skin flap but recovered after proper shortening;1 case had restenosis for the infection of anastomosis but voided well after excision and reanastomnsis;1 casehad a urinary fistula resulting from hematoma and infection, but was successfully treated by the neo-plasty of the urinary fistula. The mean peak urinary flow rate was 17.0 ml/s (range 15.0 to 22.0 ml/s) for 17 patients 6 months postoperatively, except for one who experienced genuine urinary incon-tinence. At 9-18 months after operations, the mean peak urinary flow rate was 17.5 ml/s (range 15.8 to 22.5 ml/s) for 17 patients. Conclusion The single-stage urethroplasty based on pediculated skin flaps is a reliable and durable method for complicated long urethratresia.

This study was aimed to investigate the antitussive,expectorant,antiasthmatic and anti-inflammatory effect of Ju-Hong Tan-Ke (JHTK) liquid.The methods of cough induced by ammonia in mice and cough induced by citric acid in guinea pigs were used to observe the antitussive effects.The mouse phenolsulfonphthalein excretion method,rat capillary expectoration method and the rabbit tracheal cilia movement influence experiment were used to observe the expectorant effect.An experiment of allergen induced rats' asthma was used to observe the antiasthmatic effects.The anti-inflammatory effect was observed by mouse peritoneal capillary permeability test and xylene induced ear swelling in mice.The results showed that JHTK liquid could inhibit cough induced by ammonia in mice,decrease the frequency of cough induced by citric acid in guinea pig and prolong the latent period of cough.The medicine could also obviously increase phenol red output of trachea in mice,promote expectoration in rats,accelerate the movement of cilium of tracheal transparently and prolong the latent period of asthma induced by allergens in rats,inhibit capillary permeability and lighten ear edema in mouse model.It was concluded that JHTK liquid could inhibit the reflex cough caused by hypersensitivity of airway sensor.It is peripheral antitussive rather than central antitussive,which has significant antitussive,expectorant,antiasthmatic and anti-inflammatory effects.Its efficacy is superior or equivalent to positive chemical control medicine.

bcl-2 inhibitor of transcription 1 (Bit1) is an anoikis effector that can play a role of caspase-independent apoptosis by down-regulating bcl-2 expression. Previous studies have found that Bit1 affects cell survival and apoptosis through Erk and FAK-PI3K-Akt-NF-κB pathways. It is worth noting that the expression of Bit1 has shown the obvious tumor specificity in different tumors, and it is closely related to TNM stage, differentiation and prognosis of the tumor. This review summarizes the expression, main mechanism, and significance of Bit1 in different tumors.

Objective To use the cognitive reinforcement comprehensive intervention program constructed by our team to intervene in patients with spinal cord injury and evaluate its clinical application effect.Methods A non-randomized trial design was adopted to select 97 patients with spinal cord injury from November 2021 to September 2022.Forty-four patients from March to September 2022 in a Grade A hospital in Hefei City were included in the experimental group,and 53 patients from November 2021 to February 2022 were included in the control group.The cognitive reinforcement comprehensive intervention program was used to intervene in the experimental group,and the conventional rehabilitation nursing was used to intervene in the control group.The intervention lasted for 12 weeks in both groups.The Changsha Montreal Scale,Social Support Rating Scale,Rehabilitation Exercise Self-efficacy Scale,Spinal Cord Injury Independence Rating Scale and Hamilton Anxiety Scale were used to measure the two groups before intervention,1 month after intervention and 3 months after intervention.Results 40 cases in the experimental group and 48 cases in the control group completed the study.Repeated measurement ANOVA showed that the temporal,interactive and intergroup effects of cognitive function scores and anxiety scores were statistically significant(P＜0.05).The time effect and interaction effect of the subjective support dimension score,coping self-efficacy dimension score of the two groups were statistically significant(P＜0.05).One month after the intervention,the cognitive function scores of test group were higher than before intervention and control group,and the anxiety scores were lower than before intervention and control group(P＜0.05).Three months after the intervention,the scores of cognitive function,subjective support dimension and coping self-efficacy dimension of experimental group were higher than those before intervention and control group,and the scores of anxiety level were lower than those before intervention and control group(P＜0.05).Conclusion Comprehensive intervention of cognitive reinforcement can improve the cognitive function of patients with spinal cord injury,delay the process of cognitive impairment,enhance self-confidence,relieve anxiety,and promote physical and mental rehabilitation of patients.

Objective To systematically evaluate the adult intraoperatively acquired pressure injury risk prediction model.Methods Related study on IAPI risk prediction model in Chinese and English databases such as CBM,CNKI,PubMed and Web of Science were searched.The language is limited to Chinese and English,and the search time is until November 4,2022.Two researchers independently screened the literature and extracted the data,and applied the bias risk assessment tool of prediction model research to analyze the bias risk and applicability of the included literature.Results 13 articles were included,including 17 models(operation time,age,diabetes,BMI and serum albumin are the most commonly used predictors).Among the 17 models,the area under the curve of 14 models was 0.616 to 0.984,and the other study did not report the AUC results.Among the 13 studies,10 had good applicability,while the remaining 3 had unclear applicability.13 studies have a high risk of bias,mainly because the included studies are retrospective studies,the predictive factors are screened based on univariate analysis,and the predictive outcomes are not defined by guidelines or standardization.Conclusions The existing IAPI risk prediction model for adults has good applicability,but the risk of bias is high,and the construction is not perfect.It is necessary to pay attention to the effectiveness of different risk assessment methods in the later construction,so as to get a better and more accurate risk prediction model and provide some reference and basis for formulating relevant prevention strategies.

Objective To investigate the beneficial role of synbiotics in the intestinal microbiota of patients with chronic functional constipation (CFC).Methods According to the inclusion and exclusion criteria,6 patients with CFC were enrolled with their fresh fecal samples collected,after a continuous treatment of one month their fresh fecal samples collected again.Meanwhile,6 healthy volunteers were enrolled as the control group with their fresh fecal samples collected.All samples were transported with ice and stored in -80 ℃ refrigerator,and were analyzed by metagenomics sequencing.Results After 4 weeks of symbiotic treatment,the intestinal microbiota had changed in species in patients with CFC.Bacteria of Escherichia_ coli,Clostridium_ sp._ SS2/1 and Clostridium_ sp._ 7_ 3_ 54FAA,which were rich in the people with constipation,decreased in abundance after the treatment.Bacteria of Lactobacillus_ oris and Bifidobacterium _ animalis,which were rich in the healthy people,increased in content after the treatment.Bacteria of Veillonella_ parvula,Veillonella_ sp._ 6_ 1_ 27,Veillonella_ sp._ 3 _ 1_ 44 which were rich in the healthy people,decreased in content after the treatment.LEfSe analysis showed that Parabacteroides distaso nis,Escherichia_ coli and Enterobacter-cloacae were the specific species of the three groups respectively.Conclusion Synbiotics can change the intestinal microbiota showing therapeutic effect,thus can be used as a novel clinical treatment method.