Microsatellite-based analysis of genetic structure and gene flow of (Walker) (Lepidoptera: Noctuidae) in China.

The oriental armyworm, , is a serious agricultural pest in China. Seasonal and roundtrip migration has recently led to sudden, localized outbreaks and crop losses. To evaluate genetic differentiation between populations in eastern and western China and elucidate gene flow, the genetic structure of 20 natural populations from nine provinces was examined using seven microsatellite markers.

Prognostic significance of lymph node status in patients with metastatic colorectal carcinoma treated with lymphadenectomy.

Background And Objectives: To test prognostic significance of lymph node status in patients with metastatic colorectal carcinoma (mCRC).

Methods: Four hundred ninety six patients diagnosed with synchronous mCRC and treated with lymphadenectomy between 1995 and 2008 were identified and divided into groups pN0, pN1, and pN2 (140 (28.2%) in pN0, 223 (45.

USP22 acts as an oncogene by the activation of BMI-1-mediated INK4a/ARF pathway and Akt pathway.

Recent studies provided strong support for the view that ubiquitin-specific protease 22 (USP22) plays a central role in cell-cycle progression and also in pathological processes such as oncogenesis. We have recently shown that USP22 levels are elevated in colorectal carcinoma with associated increase in the expression of several cell-cycle-related genes. However, the precise mechanism for these functions of USP22 at molecular level has not been fully elucidated.

The role of para-aortic lymphadenectomy in surgical management of patients with stage N+ rectal cancer below the peritoneal reflection.

The goal of this retrospective study was to determine the effect of para-aortic lymphadenectomy on clinical outcome in patients with stage N+ rectal adenocarcinoma below the peritoneal reflection. A retrospective analysis was performed on the clinical outcome of 181 patients with stage N+ rectal adenocarcinoma below the peritoneal reflection who underwent total mesorectal excision (TME) with total pelvic lymph node (PLN) adenectomy, with or without para-aortic lymph node (PAN) adenectomy. Independent prognostic factors were determined by multivariate Cox regression analysis.

Adhesion pattern and prognosis studies of T4N0M0 colorectal cancer following en bloc multivisceral resection: evaluation of T4 subclassification.

In current TNM stage system, T4 lesions represent a complex group and should be considered to further optimize the classification. This study evaluates the significance of adhesion pattern in T4 subclassification based on prognostic analysis of T4N0M0 colorectal cancer following en bloc multivisceral resection (MVR). Prospectively collected data (1992-2004) were analyzed for 278 patients with stage T4N0M0 lesions following MVR for colorectal cancer.

Altering trend of clinical characteristics of colorectal cancer: a report of 3,607 cases.

Background And Objective: Incidence of colorectal cancer in China has increased since 1980s. The epidemiologic character of colorectal cancer in China is similar to that in high prevalence districts. The distributions among different regions are different, with high incidence in the Eastern coastal regions and low incidence in the Western inland.

[Study on retrograde metastasis rule of middle-low rectal cancer].

Objective: To investigate the resection range of mesorectum and rectum below the inferior margin of tumor for the total mesorectum excision (TME) in middle-low rectal cancer.

Methods: Sixty patients were enrolled in the study. After TME operation, serial 5 mm interval sections were made in specimens of middle-low rectal cancer.