Effect of Porcine Large Intestine-processed Dahuang （Radix et Rhizoma Rhei） on Defecation and Colon Pathological Changes in Constipation Model Mice / 中医杂志

ObjectiveTo investigate the effect of porcine large intestine-processed Dahuang （Radix et Rhizoma Rhei） on defecation in constipation model mice and the possible mechanism. MethodsFifty Kunming mice were randomized to blank group （n=10） and model group （n=40）. Loperamide suspension at the dose of 8 mg/（kg·d） was given by gavage for four consecutive days to establish a model of constipation. The 24 successfully modeled mice were randomly divided into model group， processed Dahuang group， lactulose group， raw Dahuang group， with six mice in each group. Moreover， six randomly selected mice were chosen as control group. Since the fifth day， 8 mg/（kg·d） of loperamide suspension by gavage was given to the model group， processed Dahuang group， raw Dahuang group， and lactulose group； two hours later， the processed and raw Dahuang groups were administered with 0.6 g/（kg·d） of processed and raw Dahuang suspension， respectively， while the lactulose group was given 0.6 g/（kg·d） of latulose suspension， and the blank group and the model group were given 0.2 ml/10 g of distilled water by gavage， all for four days. The general condition， body weight after the last gavage， number of fecal particles within six hours， fecal wet weight， fecal water content ratio， intestinal propulsion rate and colonic histology changes by HE staining of each group were detected. ResultsThe body weight of the mice in the raw Dahuang group was significantly lighter than that in the other groups （P＜0.05 or P＜0.01）. The number of fecal particles， fecal wet weight and intestinal propulsion rate of mice significantly decreased in the model group than in the blank group （P＜0.05 or P＜0.01）. Compared to those in the model group， the number of fecal particles and fecal wet weight in the processed Dahuang group， lactulose group and raw Dahuang group significantly increased， and the fecal water content ratio in the raw Dahuang group increased as well （P＜0.05 or P＜0.01）. Compared to those in the processed Dahuang group， the number of fecal particles and fecal wet weight in the raw Dahuang group decreased， while the fecal water content ratio increased （P＜0.05 or P＜0.01）， and the fecal water content ratio in the lactulose group increased significantly （P＜0.05）. The intestinal propulsion rate in the processed Dahuang group was higher than that in the model group， lactulose group and raw Dahuang group （P＜0.05 or P＜0.01）. Histopathological analysis showed that the colonic crypts and goblet cells in the blank group were normal and clear， and the colonic muscular layer was thicker. The colonic crypts of the mice in the model group were damaged， with reduced goblet cells to varying degrees and changed colonic muscularis. In the lactulose group and raw Dahuang group， part of the crypts were broken， and the goblet cells were damaged to varying degrees， while in the processed Dahuang group， still the colonic tissue structure of the mice was relatively clear， and the colonic crypts and goblet cells were relatively normal， with thickened muscular layer of the colon. ConclusionPorcine large intestine-processed Dahuang could improve defecation in constipation model mice， and reduce the drastic purgation function of raw Dahuang， for which the mechanism may be related to the protection of colon histopathological damage.

Electromagnetic navigation bronchoscope-guided microwave ablation for treatment of peripheral pulmonary nodules / 中国胸心血管外科临床杂志

@#Increasing peripheral pulmonary nodules are detected given the growing adoption of chest CT screening for lung cancer. The invention of electromagnetic navigation bronchoscope provides a new diagnosis and treatment method for pulmonary nodules, which has been demonstrated to be feasible and safe, and the technique of microwave ablation through bronchus is gradually maturing. The one-stop diagnosis and treatment of pulmonary nodules can be completed by the combination of electromagnetic navigation bronchoscopy and microwave ablation, which will help achieve local treatment through the natural cavity without trace.

Advances of Electromagnetic Navigation Bronchoscopy for Peripheral Pulmonary Lesions / 中国肺癌杂志

The incidence of peripheral pulmonary lesions (PPLs) is growing following the adoption of lung cancer screening by low-dose chest CT. The diagnosis and treatment of pulmonary nodules is one of the most difficult problems. Based on the electromagnetic positioning technology, the electromagnetic navigation bronchoscope is guided to the pulmonary nodules for biopsy or treatment, providing a new minimally invasive diagnosis and treatment method for suspicious lung lesions. This paper provides an overview of the current status and progress of electromagnetic navigation bronchoscopy in the diagnosis and treatment of peripheral pulmonary diseases.

Predictive value of 3 different risk stratification models for patients after congenital heart surgeries / 中华心血管病杂志

Objective@#To evaluate the predictive value of 3 different risk stratification models including the risk adjustment in congenital heart surgery-1 (RACHS-1), Aristotle basic complexity (ABC), and Society of Thoracic Surgeons-European Association for cardiothoracic surgery congenital heart surgery mortality score (STAT) risk scoring system for death and major complications in patients after congenital heart surgeries.@*Methods@#A total of 3 578 patients (age<18 years old) received surgery for congenital heart diseases from January to December 2015 in Fuwai hospital were enrolled, and the clinical data were retrospectively analyzed. The congenital heart disease patients were 1.7 (0.8, 4.5) years old, and the male accounted for 54.3% (1 943 cases).Death after surgery and major complications including use of extracorporeal membrane oxygenation, bedside thoracotomy, peritoneal dialysis for renal failure, bedside hemofiltration for renal failure, tracheotomy, reoperation for mediastinum infection, reoperation for heart in hospital were observed. The area under the receiver operating characteristic (ROC) curve was calculated to evaluate the predictive value for mortality after surgery and major complications with RACHS-1, ABC, and STAT risk scoring systems.@*Results@#The mortality after surgery was 0.4% (14/3 578) , and the rate of major complications was 3.2% (113/3 578) . For mortality after surgery, areas under the ROC curve were 0.682 (95%CI 0.570-0.795, P=0.002), 0.722 (95%CI 0.612-0.832, P<0.001), and 0.753 (95%CI 0.659-0.847, P<0.001) with RACHS-1, ABC and STAT risk scoring systems, respectively. For major complications, areas under the ROC curve were 0.709 (95%CI 0.667-0.751, P<0.001), 0.743 (95%CI 0.702-0.784, P<0.001), and 0.731 (95%CI 0.693-0.770, P<0.001) with RACHS-1, ABC and STAT risk scoring systems, respectively.@*Conclusion@#STAT risk scoring system is superior to RACHS-1 and ABC risk scoring systems on predicting death after surgery, and ABC risk scoring system is superior to RACHS-1 and STAT risk scoring systems on predicting major complications in Chinese patients with congenital heart disease in the single center.

Exogenetic insulin increased bone mineral densityin middle-aged male patients with type 2 diabetes mellitus

We aimed to evaluate the influence of exogenetic insulin on bone mineral density [BMD] in Type 2 Diabetes Mellitus [T[2]DM]. Group A included 120 cases of middle-aged male patients with type 2 diabetes mellitus were administrated exogenetic insulin [40 cases in Group A[1]: for less than 1 year; 40 cases in Group A[2]:for 1 to 3 years; 40cases in Group A[3]: for 3 to 5 years], and another 120 cases [Group B] of middle-aged male patients with type 2 diabetes mellitus were administrated insulin secretagogues. The measurements of BMD of lumbar vertebra [L2-4], collum femoris and total body were conducted with dual-energy X-raya bsorptiometry, followed by the determination of glycosylated hemoglobin, plasma insulin concentration [fasting and postprandial], and fasting C-peptide. Our results revealed that there was no statistical difference of BMD [P>0.05] between patients in Group A[1]or A[3]andpatients in Group B [B[1], B[2] or B[3]], while the BMD in Group A[2] increased significantly [P<0.05]. And the fracture risk in Group A[3] increased significantly [P<0.05] compared with Group B [B[1], B[2] or B[3]], Taken together, exogenetic insulin significantly increased BMD and fracture risk of middle-aged male patients with type 2 diabetes mellitus

Midterm outcome of surgical therapy for congenitally corrected transposition of the great arteries with morphologically involuted left ventricle / 中华心血管病杂志

<p><b>OBJECTIVE</b>We followed up all the patients underwent pulmonary artery banding (PAB) with or without the second stage double switch (DS) operation to compare the midterm outcomes between the DS and the prolonged palliative PAB.</p><p><b>METHODS</b>From January 2005 to June 2012, 40 consecutive patients diagnosed with congenital corrected transposition of the great arteries (cc-TGA) with morphologically involuted left ventricle were included in this retrospective cohort study. Every patient underwent the first stage PAB. The second stage DS was performed in 15 patients (DS group) and the palliative PAB was prolonged in the other 25 patients (PAB group). The median age at PAB was 3.1 years (range, 3 months to 8 years), weight was 11.5 kg (range, 5.0 kg to 21.5 kg). The patients were followed up after surgery.</p><p><b>RESULTS</b>Follow-up time was (3.4 ± 0.7) years. Overall mortality was 33.3% (5/15) in DS group and 4.0% (1/25) in PAB group (P < 0.05). The ratio of NYHAI-II was 80.0% (8/10) in DS group and 95.9% (23/24) in PAB group (P < 0.05) and the mean left ventricle ejection fraction was (51.4 ± 9.6)% in DS group and (61.0 ± 6.4)% in PAB group(P < 0.01) during follow up. There was no PAB related cyanosis or ventricular dysfunction and the trans-banding pressure gradient was (46.9 ± 21.5)mmHg (1 mmHg = 0.133 kPa) in PAB group. Echocardiography examination revealed moderate to large aortic regurgitation in 3 patients and severe post-double switch operative arrhythmias was found in 2 patients in DS group. The age at PAB (HR = 13.30, 95%CI:6.28-14.02, P < 0.05) and left ventricle dysfunction (HR = 4.77, 95%CI:2.71-8.68, P < 0.05) were identified as the risk factors for mortality after DS.</p><p><b>CONCLUSION</b>Compared to the DS, the prolonged palliative PAB procedure is associated with lower mortality and better cardiac function post operation.</p>