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This study aimed to assess the impact of treatment sequencing on long-term survival, in distal gastric cancers (GCs) (stage IB/II/III).
This retrospective study included patients with distal GC undergoing D2 resection. Outcomes were compared between group 1 (surgery with adjuvant chemotherapy) and group 2 (perioperative chemotherapy with surgery). 11 matching for baseline characteristics (age, cT, and cN stage) was performed for outcome comparison.
At a median follow-up of 47.5 months in the included 342 patients, the 5-year overall survival (OS) was 61.1% and disease-free survival (DFS) was 50.5%. OS was comparable in the unmatched (group 1, n=118; group 2, n=224) (HR 0.905, 95%CI 0.64-1.33, P=0.615) and matched groups (group 1, n=97; group 2, n=97) (HR 0.77, 95% CI 0.48-1.26, P=0.3).
D2 resection followed by adjuvant chemotherapy provides similar long-term outcomes as compared to perioperative chemotherapy approach for stage IB/II/III distal GCs.
D2 resection followed by adjuvant chemotherapy provides similar long-term outcomes as compared to perioperative chemotherapy approach for stage IB/II/III distal GCs.
We sought to determine whether the amniotic cavity/fluid could be an attainable route of administration of therapeutic antibodies to the fetus/neonate.
Time-dated pregnant dams (n=9) received volume-matched intra-amniotic injections of either saline (n=29), or different concentrations of a human IgG that lacked homology with rodents 5mg/mL (n=28); 10mg/mL (n=28); or 15mg/mL (n=24). At term, the presence of the IgG was quantified by ELISA in the serum, bone marrow, spleen, thymus, and brain of all neonates, and in the maternal serum. Statistical analysis was by median regression with significance set at Bonferroni-adjusted p<0.008.
Overall fetal survival was 83% (90/109), with no difference between the groups. Human IgG was detected in the serum, bone marrow, spleen, thymus, and brain of all fetuses for all three injected concentrations, but not in the saline injected controls (p<0.001). A dose dependent relationship between injection concentration and final IgG load was noted in the bone marrow, spleen, and thymus (p=0.004 to <0.001). Human IgG was also detected in maternal serum.
IgG antibodies can reach high levels in the fetal/neonatal circulation after simple intra-amniotic administration in a healthy rodent model. Transamniotic fetal immunotherapy (TRAFIT) may become a practicable strategy for the perinatal management of select diseases.
N/A (animal and laboratory study) TYPE OF STUDY Animal and laboratory study.
N/A (animal and laboratory study) TYPE OF STUDY Animal and laboratory study.
Enterobius vermicularis is known to be associated with appendicitis, however a causal relationship between Enterobius and appendicitis has not been established. The aim of this study was to explore the relationship between appendiceal Enterobius and histologic appendicitis.
A retrospective review was performed of all pediatric appendectomies between 1997 and 2019. Patients with diagnosed with Enterobius were included for analysis. Patient demographics, operative findings, and pathologic reports were queried. Data were entered into an encrypted database and subsequently analyzed. A comprehensive review of the literature was also conducted.
Thirty-eight cases of Enterobius-associated appendicitis were identified out of 3541 (1.07%). Grossly normal appendices at operation were seen in 27% of patients. Inflammatory infiltrate was noted on histopathology in 78.3%, and Enterobius was considered to be the cause of that inflammation in 68.4%. The comprehensive literature review revealed 19 articles (1.87% incidence) that noted 35% of patients with appendiceal Enterobius had appendicitis on either histopathology or gross evaluation.
The high rate of inflammation on pathology found among our patients with pinworm appendicitis suggests an association with presentation as acute appendicitis. Our comprehensive review revealed a higher proportion of Enterobius appendicitis. Treatment with antihelminthic therapy is recommended.
Level IV(4)-case series and comprehensive review.
Level IV(4)-case series and comprehensive review.Pemphigus and pemphigoid are paradigms for understanding the mechanisms of antibody-mediated autoimmune disease in humans. In pemphigus, IgG4-predominant autoantibodies cause intraepidermal blistering by direct interference with desmoglein interactions and subsequent disruption of desmosomes and signaling pathways. In pemphigoid, IgG1, IgG4, and IgE autoantibodies against basement membrane zone antigens directly interfere with hemidesmosomal adhesion, activating complement and Fc receptor‒mediated effector pathways. Unraveling disease mechanisms in pemphigus and pemphigoid has identified numerous opportunities for clinical trials, which hold promise to identify safer and more effective therapies for these potentially life-threatening diseases.Unlike the established anti-inflammatory drugs with a broad range, new-targeted therapeutic approaches have emerged in the management of autoimmune skin diseases to increase efficacy and decrease adverse reactions on the basis of an improved molecular understanding of pathogenesis. Saracatinib concentration Most inflammatory dermatoses are driven by misled immune responses physiologically directed at exogenous pathogens, that is, type 1 immunity against viral pathogens, type 2 immunity against parasites, and type 3 immunity against fungi and bacteria. Pathogenic hallmarks of these major immune reaction patterns are characterized within this article, and a comprehensive overview of current clinical trials evaluating targeted therapeutics for respective dermatoses is outlined.Active Disturbance Rejection Control (ADRC) emerges as a promising control method that can effectively handle uncertainties and disturbances. However, many model-based ADRC tuning methods turn laborious to achieve satisfactory control performance, when the critical process parameters are difficult to accurately obtain, especially the time delay information. To this end, this paper aims to propose a data-driven iterative tuning method for time-delayed ADRC (TD-ADRC). Based on parameter scaling technique, the quantitative correlation among control performance, robustness and normalized controller parameters are investigated. It is then used to design robust nominal controller. Then, based on the TD-ADRC inner-loop equivalent structure, an iterative feedback tuning (IFT) method is proposed to optimally obtain the nominal first order plus time delay (FOPTD) process model. Its unbiasedness and convergence are also described. With the empirical relations and the IFT stochastic approximation algorithm, a data-driven iterative tuning method for TA-ADRC is proposed, which allows a reasonable trade-off between system performance and robustness. Simulation results validate the efficacy of the proposed method, and a water-tank control experiment depicts a promising prospect in control practice.As the wind turbine operates in harsh conditions, numerous of its components are critical and present an important downtime for maintenance. In this paper, we propose a fault diagnosis algorithm to detect and locate the defects affecting the generator rotor and the pinion of the gearbox lay shaft in a real 750 kW wind turbine drivetrain. The induction generator was used as a fault sensor for gear teeth damage. Through the use of the wavelet packet transform, and the local mean decomposition combined with the Fast Fourier Transform, the detection of gear meshing frequency in the stator current reflects teeth faults. Hence, the principal component analysis of the stator current gives a suitable classification for the gearbox states under different working stages. The obtained results have been significant, despite the use of a short duration and a low sampling frequency of the experimental data.In the presence of system coupling and dynamic uncertainties, extensive research has been conducted on the precise motion control of industrial manipulators with general reference trajectories. Since repetitive operations are common tasks in industrial applications, it is an essential and practical problem to further improve the control accuracy by taking advantage of the periodicity of the reference trajectory. In this paper, a desired compensation adaptive robust repetitive control is proposed for multi-DoFs industrial manipulators to perform repetitive tasks. Specifically, the link dynamics identified offline is compensated directly to decouple the system and capture the main characteristics of the link effect. Then, the uncertain friction is dealt with through an online adaptation scheme, in which the desired compensation is utilized to avoid measurement noise and chattering at low speed. And periodic disturbances are approximated by Fourier series expansion with unknown Fourier coefficients, which will be learned online. Finally, the robust feedback is designed to guarantee transient control accuracy and robustness against dynamic uncertainties. Comparative experiments on an industrial manipulator show that the proposed controller possesses better transient and steady-state control accuracy and error convergence rate.
This article reports the results of the 2020 Spanish Catheter Ablation Registry, a year marked by the SARS-CoV-2 pandemic.
Data were collected retrospectively through completion and return of a specific form by the participating centers.
Data from 97 centers (67 public, 30 private) were analyzed. A total of 15169 ablation procedures were reported with a mean of 155±117 and a median [interquartile range] of 115 [62-227]. Because of the SARS-CoV-2 pandemic, both procedures and participating centers markedly decreased (-3380 procedures,-18%) and there were 5 centers less than in 2019. The most common procedure continued to be atrial fibrillation ablation (4513; 30%), well ahead of the remaining substrates, followed by ablation of the cavotricuspid isthmus (3188; 21%), and intranodal re-entry tachycardia (2808; 18%). Ablation of these 3 substrates continued to form the bulk of the procedures. The total success rate was slightly lower than in previous years (88%) with a similar complication rate (n=309; 2%) and mortality (n=7; 0.04%). A total of 243 procedures were performed in pediatric patients (1.6%).
The Spanish Catheter Ablation Registry systematically and continuously reflects the national trajectory, which, in 2020, was markedly affected by the SARS-CoV-2 pandemic. Although slightly lower than in previous years, the success rate remained high, with a low complication rate.
The Spanish Catheter Ablation Registry systematically and continuously reflects the national trajectory, which, in 2020, was markedly affected by the SARS-CoV-2 pandemic. Although slightly lower than in previous years, the success rate remained high, with a low complication rate.
To alleviate the overflow of coronavirus disease 2019 (COVID-19) patients in hospitals, less invasive and simple criteria are required to triage the patients. We evaluated the relationship between COVID-19 severity and fatty liver on plain computed tomography (CT) scan performed on admission.
In this retrospective cohort study, we considered all COVID-19 patients at a large tertiary care hospital between January 31 and August 31, 2020. COVID-19 severity was categorized into severe (moderate and severe) and non-severe (asymptomatic and mild) groups, based on the Japanese National COVID-19 guidelines. Fatty liver was detected on plain CT scan. Multivariate logistic regression analysis was performed to evaluate factors associated with severe COVID-19.
Of 222 patients (median age 52 years), 3.2%, 58.1%, 20.7%, and 18.0% presented with asymptomatic, mild, moderate, and severe COVID-19, respectively. Although 59.9% had no fatty liver on plain CT, mild, moderate, and severe fatty liver occurred in 13.1%, 18.9%, and 8.
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