Clinicopathological features of hepatoid adenocarcinoma and non-hepatoid adenocarcinoma of the stomach: A systematic review and meta-analysis.

Background: Hepatoid adenocarcinoma of the stomach (HAS) is an extremely rare and unique malignant gastric tumor with a significantly worse prognosis than non-hepatoid adenocarcinoma of the stomach (non-HAS). The present study explored the clinicopathological features of HAS and non-HAS patients to provide insights into HAS treatment strategies.

Methods: From December 26, 2023, we performed a comprehensive search of the PubMed, Web of Science, Cochrane Library, and Embase.

Prognostic value of human papillomavirus cell-free DNA in cervical cancer patients: A systematic review and meta-analysis.

Objective: This meta-analysis aimed to investigate the association between circulating human papillomavirus (HPV) cell-free DNA and oncological outcomes of cervical cancer patients.

Methods: Searches were performed in MEDLINE, Embase, and CENTRAL from their inception until 26 November 2023. Inclusion criteria were: (1) pathologically confirmed cervical cancer with available HPV test results; (2) detection of HPV cell-free DNA was performed in serum/plasma before or at end of treatment; (3) studies reported oncological outcomes of cervical cancer patients according to the levels of HPV cell-free DNA.

Survival after minimally invasive radical hysterectomy with protective colpotomy for early-stage cervical cancer: A systematic review and meta-analysis.

Minimally invasive surgery on treatment of early-stage cervical cancer is debatable. Traditional approaches of colpotomy are considered responsible for an inferior oncological outcome. Evidence on whether protective colpotomy could optimize minimally invasive technique and improve prognoses of women with early-stage cervical cancer remains limited.

Mineral composition controls the stabilization of microbially derived carbon and nitrogen in soils: Insights from an isotope tracing model.

Evidence is emerging that microbial products and residues (necromass) contribute greatly to stable soil organic matter (SOM), which calls for the necessity of separating the microbial necromass from other SOM pools in models. However, the understanding on how microbial necromass stabilizes in soil, especially the mineral protection mechanisms, is still lacking. Here, we incubated C- and N-labelled microbial necromass in a series of artificial soils varying in clay minerals and metal oxides.

Detection of driver drowsiness level using a hybrid learning model based on ECG signals.

Objectives: Fatigue has a considerable impact on the driver's vehicle and even the driver's own operating ability.

Methods: An intelligent algorithm is proposed for the problem that it is difficult to classify the degree of drowsiness generated by the driver during the driving process. By studying the driver's electrocardiogram (ECG) during driving, two models were established to jointly classify the ECG signals as awake, stress, and fatigue or drowsiness states for drowsiness levels.

Integrating microbial community properties, biomass and necromass to predict cropland soil organic carbon.

Manipulating microorganisms to increase soil organic carbon (SOC) in croplands remains a challenge. Soil microbes are important drivers of SOC sequestration, especially via their necromass accumulation. However, microbial parameters are rarely used to predict cropland SOC stocks, possibly due to uncertainties regarding the relationships between microbial carbon pools, community properties and SOC.

Survival after minimally invasive radical hysterectomy without using uterine manipulator for early-stage cervical cancer: A systematic review and meta-analysis.

Background: Minimally invasive radical hysterectomy has been reported to increase the risk of cancer relapse and death compared with open surgery in women with early-stage cervical cancer. The use of a uterine manipulator is considered one of the risk factors.

Objectives: To investigate whether women with early-stage cervical cancer treated with minimally invasive radical hysterectomy without using uterine manipulator have oncological outcomes similar to those of open surgery.

Health-related quality of life measured by EQ-5D-3L for the spouses of breast cancer patients.

To explore factors influencing the health-related quality of life of spouses of breast cancer patients and the suitable questionnaires for this purpose. A cross-sectional study was conducted in the Third Affiliated Hospital of Kunming Medical University. The spouses of breast cancer patients were included and evaluated face-to-face interviews.

[Research on the detection algorithm of electrocardiogram characteristic wave based on energy segmentation and stationary wavelet transform].

The detection of electrocardiogram (ECG) characteristic wave is the basis of cardiovascular disease analysis and heart rate variability analysis. In order to solve the problems of low detection accuracy and poor real-time performance of ECG signal in the state of motion, this paper proposes a detection algorithm based on segmentation energy and stationary wavelet transform (SWT). Firstly, the energy of ECG signal is calculated by segmenting, and the energy candidate peak is obtained after moving average to detect QRS complex.

[Utilizing Academic Clubs to Foster Practical Research Ability of Medical Students-Volunteer Team of Gastric Cancer Surgery of West China Hospital, Sichuan University].

The cultivation of medical students'research ability promotes in them high-quality career development. In addition to classroom instruction of the theoretical knowledge concerning research, the systematic training and practice of scientific research skills outside the classroom is also vitally important. We established the Volunteer Team of Gastric Cancer Surgery with the features of standardization, progressiveness, and practicality in order to cultivate the thinking skills concerning research and the research ability of medical students.

The Survival Benefit and Safety of Splenectomy for Gastric Cancer With Total Gastrectomy: Updated Results.

Background: Splenectomy was traditionally performed to dissect the splenic hilar lymph nodes. Considering the important functions of spleen, whether splenectomy would bring beneficial to gastric cancer patients is debatable. This meta-analysis aimed to make an updated evaluation on the effectiveness and safety of splenectomy.

Phosphorus Reduces Negative Effects of Nitrogen Addition on Soil Microbial Communities and Functions.

Increased soil nitrogen (N) from atmospheric N deposition could change microbial communities and functions. However, the underlying mechanisms and whether soil phosphorus (P) status are responsible for these changes still have not been well explained. Here, we investigated the effects of N and P additions on soil bacterial and fungal communities and predicted their functional compositions in a temperate forest.

The Role of HER2 in Self-Renewal, Invasion, and Tumorigenicity of Gastric Cancer Stem Cells.

Background: Deregulation of HER2 expression could affect the biological characteristics of gastric cancer cells and treatment option for gastric cancer patients. This research aims to investigate the impact of HER2 on biological characteristics of gastric cancer stem cells (GCSCs) and prognosis of gastric cancer patients.

Methods: HER2 knockdown in GCSCs were constructed by lentivirus transfection.

The value of spleen-preserving lymphadenectomy in total gastrectomy for gastric and esophagogastric junctional adenocarcinomas: A long-term retrospective propensity score match study from a high-volume institution in China.

Background: The benefit of removing the splenic lymph nodes in patients with proximal gastric cancer has been controversial. The purpose of our study was to investigate the importance of performing a splenic hilar lymph node dissection without splenectomy in patients undergoing total gastrectomy for gastric cancer.

Methods: From January 2006 to December 2015, we retrospectively reviewed patients who underwent a curative total gastrectomy for gastric cancer.

Elevated temperature increases the accumulation of microbial necromass nitrogen in soil via increasing microbial turnover.

Microbial-derived nitrogen (N) is now recognized as an important source of soil organic N. However, the mechanisms that govern the production of microbial necromass N, its turnover, and stabilization in soil remain poorly understood. To assess the effects of elevated temperature on bacterial and fungal necromass N production, turnover, and stabilization, we incubated N-labeled bacterial and fungal necromass under optimum moisture conditions at 10°C, 15°C, and 25°C.

[Effects of nitrogen and phosphorus addition on soil microbial community and amino sugar in a temperate forest on Changbai Mountain, Northeast China].

We carried out an experiment including nitrogen addition (N, 50 kg N·hm·a), phosphorus addition (P, 25 kg P·hm·a) and both nitrogen and phosphorus addition (NP, 50 kg N·hm·a+25 kg P·hm·a) in a natural Korean pine broad-leaved mixed forest on Changbai Mountain to examine the effects of single and combined N and P additions on soil microbial community composition and amino sugar. The results showed that N and P addition significantly reduced total microbial biomass by 19.5% and 24.

The application of methylene blue coloration technique in axillary lymph node dissection of breast cancer.

Background: To analyze the associated factors that affect the coloration of methylene blue (MB) in axillary lymph node dissection (ALND) of patients with breast cancer and to explore the tracer effect of MB in high axillary lymph node metastasis, to guide surgical treatment.

Methods: We recruited 170 patients who underwent ALND, all of them were injected MB before operation. We analyzed the relationships between the clinical factors of age, body mass index (BMI), molecular typing, TNM staging, neoadjuvant chemotherapy, injection time and position and the MB coloration by univariate and multivariate analyses.

Robot-Assisted versus Laparoscopic-Assisted Gastrectomy among Gastric Cancer Patients: A Retrospective Short-Term Analysis from a Single Institution in China.

Background: The da Vinci robotic system was considered an effectively alternative treatment option for early gastric cancer patients in recent years. The aim of our study was to evaluate the safety and feasibility of robot-assisted gastrectomy in our center.

Methods: This study included 33 patients who underwent robot-assisted gastrectomy (RAG) and 88 patients who underwent laparoscopic-assisted gastrectomy (LAG) between January 2016 and April 2018.

Is Preoperative Fibrinogen Associated with the Survival Prognosis of Gastric Cancer Patients? A Multi-centered, Propensity Score-Matched Retrospective Study.

Background: The prognostic significance of preoperative plasma fibrinogen in patients with operable gastric cancer remains under debate. This study aimed to elucidate the prognostic value of fibrinogen in gastric cancer patients underwent gastrectomy.

Methods: A total of 4351 patients with gastric cancer collected from three comprehensive medical centers were retrospectively evaluated.

Visceral Fat Area (VFA) Superior to BMI for Predicting Postoperative Complications After Radical Gastrectomy: a Prospective Cohort Study.

Background: Obesity may impact surgical outcomes of gastrectomy. Whether visceral fat area (VFA) is a better obesity parameter than body mass index (BMI) is still controversial. The aim of this study is to compare the accuracy and effectiveness of VFA and BMI in predicting the short-term surgical outcomes of gastrectomy.

Unveiling the Layer-Dependent Catalytic Activity of PtSe Atomic Crystals for the Hydrogen Evolution Reaction.

Two-dimensional (2D) PtSe shows the most prominent layer-dependent electrical properties among various 2D materials and high catalytic activity for hydrogen evolution reaction (HER), and therefore, it is an ideal material for exploring the structure-activity correlations in 2D systems. Here, starting with the synthesis of single-crystalline 2D PtSe with a controlled number of layers and probing the HER catalytic activity of individual flakes in micro electrochemical cells, we investigated the layer-dependent HER catalytic activity of 2D PtSe from both theoretical and experimental perspectives. We clearly demonstrated how the number of layers affects the number of active sites, the electronic structures, and electrical properties of 2D PtSe flakes and thus alters their catalytic performance for HER.

"Four-Step Procedure" of laparoscopic exploration for gastric cancer in West China Hospital: a retrospective observational analysis from a high-volume institution in China.

Background: The preoperative work-up has limitations on finding peritoneal dissemination (PD) in gastric cancer patients. Laparoscopic exploration (LE) can discover radiographically occult PD, obtain accurate stage and avert futile laparotomy. The aim of our study was to introduce "Four-Step Procedure" LE in West China Hospital and further evaluate its safety and feasibility.

Phase-selective synthesis of 1T' MoS monolayers and heterophase bilayers.

Two-dimensional (2D) MoS, which has great potential for optoelectronic and other applications, is thermodynamically stable and hence easily synthesized in its semiconducting 2H phase. In contrast, growth of its metastable 1T and 1T' phases is hampered by their higher formation energy. Here we use theoretical calculations to design a potassium (K)-assisted chemical vapour deposition method for the phase-selective growth of 1T' MoS monolayers and 1T'/2H heterophase bilayers.

NO emission from a temperate forest soil during the freeze-thaw period: A mesocosm study.

Nitrous oxide (NO) is an important greenhouse gas and is involved in the destruction of ozone layer. However, the underlying mechanisms of the high soil NO emission during the freeze-thaw (FT) period are still unclear. Here, we conducted a mesocosm study with high frequency in situ measurements to explore the responses of soil microbes to the FT cycles and their influences on soil NO emission.

Layer-Dependent Chemically Induced Phase Transition of Two-Dimensional MoS.

Two-dimensional (2D) transition metal dichalcogenides (TMDCs) with layered structures provide a unique platform for exploring the effect of number of layers on their fundamental properties. However, the thickness scaling effect on the chemical properties of these materials remains unexplored. Here, we explored the chemically induced phase transition of 2D molybdenum disulfide (MoS) from both experimental and theoretical aspects and observed that the critical electron injection concentration and the duration required for the phase transition of 2D MoS increased with decreasing number of layers.