Relationship between lymphocytes and idiopathic macular hole.

BACKGROUND: An idiopathic macular hole (IMH) is a full-thickness anatomic defect extending from the internal limiting membrane to the photoreceptor layer of the macula without any known cause. Recently, clinical laboratory markers of systemic inflammatory status derived from complete blood counts have been evaluated in ocular diseases. This study aimed to explore whether they could predict the development and progression of IMHs. METHODS: A retrospective review of 36 patients with IMH and 36 sex-and-age-matched patients with cataracts was conducted. We collected complete blood counts of all participating individuals and calculated systemic immunoinflammatory indicators. The maximum base diameter of the IMH (BD), minimum diameter of the IMH (MIN), height of the IMH (H), area of the intraretinal cyst (IRC), and curve lengths of the detached photoreceptor arms were measured on optical coherence tomography (OCT) images. We used these values to calculate the macular hole index (MHI), tractional hole index (THI), diameter hole index (DHI), hole form factor (HFF), and macular hole closure index (MHCI). We performed a receiver operating characteristic (ROC) curve analysis of 30 patients with IMH who were followed up 1 month after surgery. RESULTS: Lymphocyte counts were significantly higher in the IMH group. No other significant differences were observed between the IMH and control groups. Lymphocyte counts in the IMH group were significantly negatively correlated with MIN and BD and were significantly positively correlated with MHI, THI, and MHCI. However, lymphocyte counts were not significantly correlated with H, IRC, DHI, and HFF. In the ROC analysis, BD, MIN, MHI, THI, and MHCI were significant predictors of anatomical outcomes. According to the cut-off points of the ROC analysis, lymphocyte counts were compared between the above-cut-off and below-cut-off groups. Lymphocyte counts were significantly higher in the MIN ≤ 499.61 µm, MHI ≥ 0.47, THI ≥ 1.2, and MHCI ≥ 0.81 groups. There were no significant differences between the above-cut-off and below-cut-off BD groups. CONCLUSIONS: Although inflammation may not be an initiating factor, it may be involved in IMH formation. Lymphocytes may play a relatively important role in tissue repair during the developmental and postoperative recovery phases of IMH.

Enhanced hypoglycemic effects of konjac glucomannan combined with Polygonatum cyrtonema Hua polysaccharide in complete nutritional liquid diet fed type 2 diabetes mice.

In our aging society, dysphagia and malnutrition are growing concerns, necessitating intervention. Liquid nutrition support offers a practical solution for traditional dietary issues, but it raises a key issue: the potential for post-meal glucose spikes impacting efficacy. This study examined the effects of supplementation of Polygonatum cyrtonema Hua polysaccharide (PCP), konjac glucomannan (KGM) and their combination on acute phase postprandial glycemic response and long-term glucose metabolism in T2DM mice on a complete nutritional liquid diet. KGM was more effective in reducing postprandial glucose response, while PCP was more prominent in ameliorating long-term glucose metabolism. The KGM-PCP combination demonstrated superior outcomes in fasting blood glucose, insulin, and glucose homeostasis. PCP and KGM also influenced the composition and abundance of the gut microbiome, with the H-PCP group showing optimal performance. Moreover, the KGM-PCP combination improved body weight, lipid homeostasis, and liver health the most. PCP potentially regulates glycemia through metabolic pathways, while KGM improves glycemic metabolism by reducing postprandial glucose levels in response to viscous intestinal contents. This research identifies the structure, viscosity properties, and hypoglycemic effects of KGM and PCP in complete nutritional liquid diet fed T2DM mice, enabling their strategic utilization as hypoglycemic components in nutritional administration and glycemic regulation.

Diallyl Trisulfide attenuates alcohol-induced hepatocyte pyroptosis via elevation of hydrogen sulfide.

Garlic is a popular culinary herb for the prevention and treatment of alcoholic liver disease (ALD). Diallyl Trisulfide (DATS) is the major organosulfur compound of garlic. Latest studies indicated that the hepatocyte pyroptosis serves a primary role in the pathogenesis of ALD. The present study aims to assess the inhibitory effect of DATS on alcohol-induced hepatocyte pyroptosis, and to elucidate the potential mechanism by using the hepatocyte cell line HL-7702. Our study found that DATS inhibited alcohol-induced pyroptosis by decreasing gasdermin D (GSDMD) activation. Results illuminated that DATS inhibited alcohol-induced (NOD)-like receptor containing pyrin domain 3 (NLRP3) inflammasome activation by reducing intracellular reactive oxygen species (ROS) accumulation. Furthermore, DATS upregulated hydrogen sulfide (H2S) to resist ROS overproduction. The present study demonstrated that DATS mitigated alcohol-induced hepatocyte pyroptosis by increasing the intracellular level of H2S.

In silico identification and verification of ferroptosis-related genes in type 2 diabetic islets.

Type 2 diabetes (T2D) is a major global public health burden, with ß-cell dysfunction a key component in its pathogenesis. However, the exact pathogenesis of ß-cell dysfunction in T2D is yet to be fully elucidated. Ferroptosis, a recently discovered regulated form of non-apoptotic cell death, plays a vital role in the development of diabetes and its complications. The current study aimed to identify the key molecules involved in ß-cell ferroptosis3 in patients with T2D using the mRNA expression profile data of GSE25724 by bioinformatic approaches. The differentially expressed mRNAs (DE-mRNAs) in human islets of patients with T2D were screened using the islet mRNA expression profiling data from the Gene Expression Omnibus and their intersection with ferroptosis genes was then obtained. Ferroptosis-related DE-mRNA functional and pathway enrichment analysis in T2D islet were performed. Using a protein-protein interaction (PPI) network constructed from the STRING database, Cytoscape software identified ferroptosis-related hub genes in the T2D islet with a Degree algorithm. We constructed a miRNA-hub gene network using the miRWalk database. We generated a rat model of T2D to assess the expression of hub genes. A total of 1,316 DE-mRNAs were identified in the islet of patients between T2D and non-T2D (NT2D), including 221 and 1,095 up- and down-regulated genes. Gene set enrichment analysis revealed that the ferroptosis-related gene set was significantly different in islets between T2D and NT2D at an overall level. A total of 33 ferroptosis-related DE-mRNAs were identified, most of which were significantly enriched in pathways including ferroptosis. The established PPI network with ferroptosis-related DE-mRNAs identified five hub genes (JUN, NFE2L2, ATG5, KRAS, and HSPA5), and the area under the ROC curve of these five hub genes was 0.929 in the Logistic regression model. We constructed a regulatory network of hub genes and miRNAs, and the results showed that suggesting that hsa-miR-6855-5p, hsa-miR-9985, and hsa-miR-584-5p could regulate most hub genes. In rat model of T2D, the protein expression levels of JUN and NFE2L2 in pancreatic tissues were upregulated and downregulated, respectively. These results contribute to further elucidation of ferroptosis-related molecular mechanisms in the pathogenesis of ß-cell dysfunction of T2D.

Long noncoding RNA ArfGAP with RhoGAP domain, ankyrin repeat and PH domain 1 antisense RNA 1 recruits enhancer of zeste 2 polycomb repressive complex 2 subunit to promote the proliferation, migration and invasion of lung adenocarcinoma cells.

The detailed function of ARAP1-AS1, the antisense RNA of Arf-GAP with Rho-GAP domain, ANK repeat and PH domain-containing protein 1 (ARAP1), in lung adenocarcinoma (LUAD) has not been clearly elucidated and required further investigation. Our study is committed to exploring the role of ARAP1-AS1 in LUAD. Gene expression in LUAD was measured by real-time quantitative polymerase-chain reaction (RT-qPCR). The influence of ARAP1-AS1 on LUAD cell malignant behaviors was evaluated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, colony formation assay, Transwell invasion assay and wound healing assay. Subcellular fractionation assay detected the cellular localization of ARAP1-AS1 in LUAD. The protein levels were subjected to western blotting. RNA immunoprecipitation (RIP) and luciferase reporter assay were employed to verify the interaction between ARAP1-AS1, ARAP1 and enhancer of zeste 2 polycomb repressive complex 2 subunit (EZH2). Our investigation identified that ARAP1-AS1 was upregulated in LUAD cells and tissues. ARAP1-AS1 silencing repressed LUAD cell growth and migration. Furthermore, ARAP1-AS1 knockdown altered the expression of its sense mRNA, ARAP1. ARAP1-AS1 could recruit EZH2 to inhibit ARAP1 expression. Additionally, the downregulation of ARAP1 reversed ARAP1-AS1 downregulation-induced repression of cell growth and migration in LUAD. In conclusion, ARAP1-AS1 recruited EZH2 to silence ARAP1, facilitating cell proliferation, migration and invasion in LUAD. Our study demonstrated the possibility of ARAP1-AS1 to be a novel therapeutic target for LUAD. [Figure: see text].

Effects and Mechanisms of Cutting Upper Thoracic Sympathetic Trunk on Ventricular Rate in Ambulatory Canines with Persistent Atrial Fibrillation.

OBJECTIVE: The purpose is to observe the effects and neural mechanism of cutting upper thoracic sympathetic trunk (TST) on the ventricular rate (VR) during persistent atrial fibrillation (AF). METHODS: Twelve beagle dogs were halving to the control group and experimental group, 6 dogs for each group. Both groups were performed with left atrial rapid pacing (600 beats/min) to induce sustained AF. The experimental group underwent cutting upper TST after a sustained AF model was established, while the control group received thoracotomy without cutting TST. Bilateral stellate ganglion (SG) and left atrial myocardium were harvested for tyrosine-hydroxylase (TH) immunohistochemical staining. RESULTS: After cutting upper TST for 30 minutes, the average VR was 121.5 ± 8.7 bpm (95% CI, 114.8 to 128.0) in the experimental group, which was significantly slower than that of the control group (144.5 ± 4.2 bpm (95% CI, 141.5 to 148.0)) (P < 0.001). After cutting upper TST for 1 month, the average VR of the experimental group (106.5 ± 4.9 bpm (95% CI, 102.0 to 110.0)) was also significantly slower versus that of the control group (139.2 ± 5.6 bpm (95% CI, 135.0 to 143.8)) (P < 0.001). Compared with the control group, both left stellate ganglion (LSG) and right stellate ganglion (RSG) of the experimental group caused neural remodeling characterized by decreased ganglionic cell density and reduced TH staining. TH-positive component was significantly decreased in the left atrium of the experimental group compared with the control group. CONCLUSIONS: Cutting upper TST could reduce fast VR during persistent AF. Cutting upper TST induced bilateral SG neural remodeling and reduced sympathetic nerve density in the left atrium, which could contribute to the underlying mechanism of VR control during AF.

Development and validation of nomograms to intraoperatively predict metastatic patterns in regional lymph nodes in patients diagnosed with esophageal cancer.

BACKGROUND: An accurate intraoperative prediction of lymph node metastatic risk can help surgeons in choosing precise surgical procedures. We aimed to develop and validate nomograms to intraoperatively predict patterns of regional lymph node (LN) metastasis in patients with esophageal cancer. METHODS: The prediction model was developed in a training cohort consisting of 487 patients diagnosed with esophageal cancer who underwent esophagectomy with complete LN dissection from January 2016 to December 2016. Univariate and multivariable logistic regression were used to identify independent risk factors that were incorporated into a prediction model and used to construct a nomogram. Contrast-enhanced computed tomography reported LN status and was an important comparative factor of clinical usefulness in a validation cohort. Nomogram performance was assessed in terms of calibration, discrimination, and clinical usefulness. An independent validation cohort comprised 206 consecutive patients from January 2017 to December 2017. RESULTS: Univariate analysis and multivariable logistic regression revealed three independent predictors of metastatic regional LNs, three independent predictors of continuous regional LNs, and two independent predictors of skipping regional LNs. Independent predictors were used to build three individualized prediction nomograms. The models showed good calibration and discrimination, with area under the curve (AUC) values of 0.737, 0.738, and 0.707. Application of the nomogram in the validation cohort yielded good calibration and discrimination, with AUC values of 0.728, 0.668, and 0.657. Decision curve analysis demonstrated that the three nomograms were clinically useful in the validation cohort. CONCLUSION: This study presents three nomograms that incorporate clinicopathologic factors, which can be used to facilitate the intraoperative prediction of metastatic regional LN patterns in patients with esophageal cancer.

Left Atrial Appendage Fibrosis and 3-Year Clinical Outcomes in Atrial Fibrillation After Endoscopic Ablation: A Histologic Analysis.

BACKGROUND: Interest has been increasing in the study of atrial fibrosis, an important mechanism in atrial matrix remodeling. However, histopathologic evaluation of atrial fibrosis in non-valvular atrial fibrillation (NVAF) has been limited. This study aimed to analyze the histologic relationship between atrial fibrosis and development or recurrence of NVAF after endoscopic ablation. METHODS: Patients (n = 136) with NVAF undergoing endoscopic ablation and 10 patients in sinus rhythm were enrolled in this study. Left atrial appendage was harvested from all patients. Collagen volume fraction (CVF) and fibrosis biomarkers were evaluated. Linear regression analysis was performed to determine the correlation between clinical variables and atrial fibrosis. The association between atrial fibrosis and NVAF recurrence was evaluated with the Cox proportional hazards model. RESULTS: A significant difference was found in the degree of atrial fibrosis between patients with NVAF and sinus rhythm (CVF: median 15 [interquartile range (IQR), 13-17] vs median 6.5 [IQR, 5-10.25]; P < .001, respectively). Factors independently associated with CVF in multivariate linear regression analysis included longer duration of NVAF and larger left atrial diameter. Among 136 patients with ablation, 19 (13.9%) had recurrent NVAF. In multivariate Cox regression analysis, CVF (hazard ratio [HR] 1.093; 95% confidence interval [CI], 1.007-1.186; P = .033) and left atrial diameter (HR for 3-mm change 1.240; 95% CI, 1.004-1.531; P = .046) were independent risk factors for NVAF recurrence. CONCLUSIONS: Atrial fibrosis in NVAF is not only associated with left atrial diameter and duration of atrial fibrillation but also with recurrence after ablation. Atrial fibrosis may be a future therapeutic target for reduction of recurrence after endoscopic ablation.

Clinical results of Mini Maze procedure in atrial fibrillation patients with impaired left ventricular systolic function / 中国胸心血管外科临床杂志

@#Objective    To study the clinical results of Mini Maze procedure in atrial fibrillation patients with impaired left ventricular systolic function. Methods    From June 2010 to December 2017, 86 atrial fibrillation patients with impaired left ventricular systolic function received Mini Maze procedure including 54 males and 32 females, with an average age of 60.7±5.9 years. Among them, 12 were with paroxysmal, 27 were with persistent and 47 were with long-standing persistent atrial fibrillation. The mean atrial fibrillation duration was 6.5±4.8 years. CHA2DS2-VASc score was 2.2±1.1. The mean diameter of left atrium was 46.9±3.8 mm. The mean diameter of left ventricle was 51.7±4.6 mm. The preoperative ejection fraction was 42.2%±4.7%. All patients received Mini Maze procedure after general anesthesia. The ablation included 3 annular ablations and 3 linear ablations. The left atrial appendage was excised by Endo-Gia. Ablation of Marshall ligament and epicardial autonomic ganglions were made by an ablation pen. Results    Eighty-six patients successfully completed the procedure without transition to thoracotomy. There was no death during the perioperative period. Seventy-seven patients (89.5%) maintained sinus rhythm at discharge. Eighty patients were followed up for 27.2±12.1 months and 72 patients maintained sinus rhythm. The overall postoperative left ventricular ejection fraction was 47.1%±6.2%. The ejection fraction of the postoperative sinus rhythm group was 48.2%±5.8%, and the ejection fraction of the non-sinus group was 41.6%±5.8% (P<0.05). Multivariate regression analysis showed a left atrial diameter (HR=1.485, 95%CI 1.157-1.906, P<0.05) and an increase in ejection fraction over 10% (HR=18.800, 95%CI 1.674-189.289, P<0.05) were closely related to postoperative recurrence. Kaplan-Meier curve analysis showed that the recurrence rate of atrial fibrillation was significantly lower in patients with an increase in postoperative ejection fraction over 10% (P<0.05). Conclusion    Mini Maze procedure is safe and effective in the treatment of atrial fibrillation patients with left ventricular systolic dysfunction, which helps to improve left ventricular function to prevent the vicious circle of atrial fibrillation and heart failure.

Effects of selectively resecting the lower half of stellate ganglion on fast ventricular rate in canines with persistent atrial fibrillation / 中国胸心血管外科临床杂志

@#Objective To determine the effects of resecting the lower half of left stellate ganglion (LSG) on fast ventricular rate (VR) in persistent atrial fibrillation (AF) and its mechanism. Methods Twelve mature healthy male beagle dogs (15–25 kg) were studied. They were randomly divided into two groups (an experimental group and a control group, 6 dogs in each group). The control group were merely performed with rapid left atrial pacing to induce persistent AF. The experimental group were disposed with rapid left atrial pacing and received resection of the lower half of LSG after the persistent AF was documented. Simultaneously the ventricular rates were monitored separately before anesthesia, after anesthesia, 30 minutes and one month after LSG resection. The forward passing effective refractory period (ERP) of the canine atrioventricular node (AVN) was also measured. Results Each dog was documented with persistent AF after 3–6 weeks’ left atrial pacing. After resecting the lower half of LSG for 30 minutes (the control group was only observed for 30 minutes without LSG resection), the average VR of the control group attained 144.5±4.2 beats/min, while that of the experimental group was 121.5±8.7 beats/min (P<0.001). After resecting the lower half of LSG for one month (the control group was observed for one month without LSG resection), the average VR of the control group was 139.2±5.6 beats/min, while that of the experimental group was 106.5±4.9 beats/min (P<0.001). Meantime, the forward passing ERP of AVN of the experimental group was significantly prolonged than that of the control group (265.6±7.8 msvs.251.1±4.6 ms, P=0.003). Conclusion Resection of the lower half of LSG is efficient in reducing VR in canines with persistent AF, one of the mechanisms of which may be prolonging the forward passing ERP of AVN.

Effects of Renal Denervation via Renal Artery Adventitial Cryoablation on Atrial Fibrillation and Cardiac Neural Remodeling.

INTRODUCTION: Catheter-based renal denervation (RDN) could reduce cardiac sympathetic nerve activity (SNA) and inhibit atrial fibrillation (AF). However, the reliability is uncertain, because the renal sympathetic nerves are mainly distributed in the adventitial surface of the renal artery. OBJECTIVE: The aims of this study were to test the hypothesis that renal artery adventitial ablation (RAAA) definitely had the effects of RDN and to study the effects of RDN via renal artery adventitial cryoablation (RAAC) on AF and cardiac neural remodeling. METHODS: Twenty beagle canines were randomly assigned to two groups: the left RDN group (LRDN, n=10), which underwent left RDN via RAAC; the Sham group (n=10). After 2 months of postoperative recovery, AF vulnerability, AF duration, and histological examination were performed in both groups. RESULTS: Compared with the Sham group, left stellate ganglion (LSG) tissue fibrosis was increased in the LRDN group. LRDN significantly increased the percentage of TH-negative ganglionic cells and decreased the density of TH-positive nerves in the LSG (P < 0.001). Also, the densities of TH-positive nerves and GAP43 immunoreactivity within the left atrium (LA) were significantly decreased in the LRDN group (P < 0.05). After LA burst pacing, all 10 canines (100%) could be induced AF in the Sham group, but only 4 of 10 canines (40%) could be induced AF in the LRDN group (P=0.011). The percentage of LA burst stimulation with induced AF was 26.7% (8/30) in the LRDN group, which was significantly decreased compared with that of the Sham group (53.3%, 16/30) (P=0.035). In addition, AF duration was also significantly decreased in the LRDN group (13.3 ± 5.1 s) compared with that of the Sham group (20.3 ± 7.3 s, P=0.024). CONCLUSIONS: RDN via RAAC could cause cardiac neural remodeling and effectively inhibit AF inducibility and shorten AF duration. It may be useful in selecting therapeutic approaches for AF patients.

Concomitant thoracoscopic surgery for solitary pulmonary nodule and atrial fibrillation.

OBJECTIVES: The incidence of both solitary pulmonary nodules (SPN) and non-valvular atrial fibrillation (NVAF) has increased over the past decade. We performed concomitant video-assisted thoracoscopic surgery with modified epicardial radiofrequency ablation procedure for NVAF and SPN resection. METHODS: Sixteen patients (7 men, mean age 62.6 ± 11.2 years) with SPN and NVAF underwent this procedure. Of these patients, 10 had paroxysmal atrial fibrillation and 6 persistent atrial fibrillation. A modified epicardial radiofrequency ablation combined with pulmonary vein isolation, circumferential left atrial ablation, ganglionic plexus ablation and left atrial appendage resection was performed for all patients. Left pulmonary surgery was carried out subsequently. RESULTS: The mean procedure duration was 203.1 ± 15.6 (range 177-224) min. All patients successfully underwent this procedure with no conversion to sternotomy or pacemaker implantation. Of the 16 included patients, 13 received lobectomy and 3 received wedge resection. No severe complications occurred postoperatively. The mean length of hospital stay was 9.1 ± 1.4 (range 7-11) days with a mean follow-up period of 18.7 ± 6.7 (range 8-32) months. One patient had AF recurrence 6 months postoperatively. No pulmonary vein stenosis was detected at the 3rd postoperative month. There were no deaths or thromboembolic events during follow-up. CONCLUSIONS: This concomitant therapy proved to be safe and yielded good clinical outcomes. Therefore, it deserves to be considered as a treatment for patients with SPN and NVAF.

Endothelin-1 is associated with dilatation of the left atrium and can be an independent predictor of atrial fibrillation after mitral valve surgery.

OBJECTIVES: This study analysed the association between endothelin-1 (ET-1) and left atrial dimension (LAD) and evaluated whether ET-1 can be a predictor of postoperative atrial fibrillation (POAF) after mitral valve surgery. METHODS: This is a prospective study that enrolled 80 patients who underwent isolated mitral valve surgery. Plasma concentrations of ET-1 from peripheral venous blood were tested. POAF was detected using a telemetry strip or 12-lead electrocardiogram until the time of discharge. RESULTS: Patients undergoing mitral valve surgery with preoperative sinus rhythm (n = 80; average age 63.9 ± 7.9 years) were recruited to this study. POAF was documented in 31 (38.8%) patients. Preoperative plasma ET-1 levels were higher in patients with POAF compared to those without POAF (2.23 ± 0.67 vs 1.68 ± 0.59 pg/ml; P < 0.001). The plasma concentrations of ET-1 were positively correlated with LAD (Pearson's r = 0.421; P < 0.001). Multivariate logistic regression analysis revealed that LAD (odds ratio 1.170, 95% confidence interval 1.039-1.317; P = 0.009) and preoperative plasma ET-1 levels (upper versus lower 50th percentile: odds ratio 3.713, 95% confidence interval 1.085-12.701; P = 0.037) were predictors of POAF after mitral valve surgery. CONCLUSIONS: Plasma levels of ET-1 were positively correlated with LAD in patients with mitral valve disease. An elevated preoperative plasma ET-1 level can be used as a predictor of POAF after mitral valve surgery.

Hemodynamic parameters predict the risk of atrial fibrillation after cardiac surgery in adults.

BACKGROUND: Postoperative atrial fibrillation (POAF) is a common complication following cardiac surgery and is associated with poorer prognosis. This study attempted to evaluate whether hemodynamic parameters determined by a right heart catheter predict the occurrence of POAF. HYPOTHESIS: We hypothesized that atrial fibrillation after cardiac surgery can be predicted by hemodynamic parameters determined by a right heart catheter. METHODS: Between October 2015 and January 2017, 126 patients with preoperative sinus rhythm undergoing coronary artery bypass grafting and/or aortic valve replacement were enrolled in this study. Complete echocardiographic examination was performed preoperatively, and hemodynamic parameters were recorded via a right heart catheter before anesthesia induction. Postoperative telemetry strips and electrocardiogram were used to detect atrial fibrillation until discharge. Multivariate logistic regression was used to identify risk factors of POAF. RESULTS: The overall incidence of POAF was 40/126 (31.7%). Multivariate logistic regression analysis determined that left atrial dimension (LAD) (adjusted odds ratio [OR]: 1.118, 95% confidence interval [CI]: 1.020-1.227, P = 0.018), pulmonary capillary wedge pressure (PCWP) (adjusted OR: 1.225, 95% CI: 1.082-1.387, P = 0.001), and pulmonary artery systolic pressure (PASP) (adjusted OR: 1.076, 95% CI: 1.019-1.137, P = 0.008) were significant predictors of POAF. CONCLUSIONS: The present study suggested that LAD, PCWP, and PASP were robust predictors of POAF. These parameters may indicate a patient's susceptibility toward developing POAF and help to identify patients who need preventive treatment.