Identification and Prognostic Effect of Extramural Venous Invasion in Locally Advanced Esophageal Squamous Cell Carcinoma.

The role of extramural venous invasion (EMVI) in esophageal cancer is still unclear. This study aimed to identify EMVI and assess its impact on survival and recurrences in esophageal squamous cell carcinoma (ESCC). Retrospectively, we reviewed resection specimens of 147 locally advanced ESCC (pT3-T4aN0-3M0) patients who had a curative intended surgery alone at the Cancer Hospital of Shantou University from March 2009 to December 2013.

Perineural Invasion is a Better Prognostic Indicator than Lymphovascular Invasion and a Potential Adjuvant Therapy Indicator for pN0M0 Esophageal Squamous Cell Carcinoma.

Background: Esophageal squamous cell carcinoma (ESCC) at pN0M0 can be more locally aggressive and disseminated than those with lymph node and distant metastasis. Perineural invasion (PNI) is reported as a poor prognostic factor in cancer and is thought to be related to regional tumor spread and metastasis. However, its clinicopathological role and meaning for treatment in pN0M0 ESCC are unknown.

Esophageal intraepithelial invasion of Helicobacter pylori correlates with atypical hyperplasia.

Helicobacter pylori (H. pylori), a common pathogen residing in the gastrointestinal tract, has been well characterized in stomach cancer,while its correlation with esophageal cancer remains poorly understood. In this study, we aim to assess the relationship between esophageal intraepithelial H.

MCM2 expression levels predict diagnosis and prognosis in gastric cardiac cancer.

Background: Gastric Cardiac Cancer (GCC) has high incidence and poor prognosis requiring early screening of high-risk populations. Minichromosome maintenance (MCM) proteins are used as diagnostic-biomarkers in many cancers but not validated for GCC. We evaluate MCM protein 2 (MCM2), comparing it with the validated markers Ki67 and PCNA.

Tetramine poisoning: A case report and review of the literature.

Background: Tetramethylene disulfotetramine (TETS), a banned neurotoxic rodenticide, has accounted for numerous intentional and unintentional poisonings in mainland China. Since the first known case of human illness caused by tetramine occurred in NewYork, in May 2002, TETS has caused more than 50 human poisonings in Western countries.

Aim: To analyze pathological changes of TETS poisoning and to provide evidence for forensic identification.

Association of mitochondrial haplogroup D and risk of esophageal cancer in Taihang Mountain and Chaoshan areas in China.

Both the Taihang Mountain area in north-central China and Chaoshan area in the southeastern littoral of China are areas with high risk of esophageal cancer (EC). Our previous study confirmed that populations from the two areas might share similar matrilineal backgrounds and found that mitochondrial DNA (mtDNA) haplogroup D, especially subhaplogroups D4a and D5a, might be genetic background markers of EC in Chaoshan area. Here, to further determine whether D4a, D5a, and D might be susceptibility markers for EC in the two high-risk areas, we performed a case-control study with larger samples and analyzed the distributions of these three haplogroups in subjects (controls [n = 898] and patients [n = 768]) from the two areas.

Heredity, diet and lifestyle as determining risk factors for the esophageal cancer on Nanao Island in Southern China.

In this case-control study we evaluated contribution of environmental and genetic factors for risk of esophageal cancer (EC) by studying populations on Nanao Island (highest risk area for EC in China) and Shanwei (low risk region). Data on lifestyle, diet and family history were collected from the 166 newly diagnosed EC patients on Nanao between 2003 and 2004, from their 1450 first degree relatives and from controls on Nanao and Shanwei. Univariate and logistic regression analysis, family aggregation patterns, standardized incidence ratio (SIR), segregation ratio and heritability index were evaluated.

Analysis of basement membrane structure and inflammation during the development of esophageal squamous cell carcinoma in the Chinese Chaoshan high risk region.

Background & Aims: To investigate relationships between basement membrane structure, inflammation, beta1 integrin expression, activation of ERK/MAPK signaling pathways, and cell proliferation in esophageal mucosa at various stages during the evolution of esophageal squamous cell carcinoma.

Methods: Three tissue arrays were made of 228 tissue cores from 428 surgically-resected specimens. The arrays included 26 samples of normal epithelium, 28 with hyperplasia, 18 with dysplasia, 27 with carcinoma in situ and 129 with invasive carcinoma.

Cognitive impairment in rats after long-term exposure to GSM-900 mobile phone radiation.

Considering the frequent use of mobile phones, we have directed attention to possible implications on cognitive functions. In this study we investigated in a rat model the long-term effects of protracted exposure to Global System for Mobile Communication-900 MHz (GSM-900) radiation. Out of a total of 56 rats, 32 were exposed for 2 h each week for 55 weeks to radio-frequency electromagnetic radiation at different SAR levels (0.

mtDNA evidence: genetic background associated with related populations at high risk for esophageal cancer between Chaoshan and Taihang Mountain areas in China.

There are three major geographic regions in China known for their high incidences of esophageal cancer (EC): the Taihang Mountain range of north-central China, the Minnan area of Fujian province, and the Chaoshan plain of Guangdong province. Historically, waves of great population migrations from north-central China through coastal Fujian to the Chaoshan plain were recorded. To study the genetic relationship among the related EC high-risk populations, we analyzed mitochondrial DNA (mtDNA) haplogroups based on 30 EC patients from Chaoshan and used control samples from the high-risk populations, including 48, 73, and 89 subjects from the Taihang, Fujian, and Chaoshan areas, respectively.

Temporal trends of esophageal cancer during 1995-2004 in Nanao Island, an extremely high-risk area in China.

The purpose of our study was to investigate the temporal malignant tumor incidence rates among the 70,000 residents at the relatively isolated Nanao Island in South China Sea. The data on all malignant tumor cases from Nanao Cancer Registry during 1995-2004 were coded, computerized, and analyzed using the software SPSS10.0.

[Effect of selenium deficiency on the F344 inbred line offspring rats' neuro-behavior, ability of learning and memory].

Objective: To establish the selenium (Se) deficient animal model on F344 inbred line rats and observe the effects of a long-term Se-deficiency on the offspring's neuro-behavior, abilities of learning and memory.

Methods: Feeding F344 inbred line rats on Se-deficient diet to establish Se-deficient animal model. For the offspring, the body weight, physiological indexes nervous reflections for growth and development were monitored during the early postnatal period.

[Effects of selenium and B-27 supplements on viability and differentiation of neural stem cell in newborn rat].

Objective: To assess how trace element selenium and B27 supplements affect the neural stem cell (NSc) differentiation in vitro.

Methods: The development and differentiation of NSc from the newborn rat were observed with primary culture and subculture during treating by sodium-selenite, and selenium-methyl-cysteine (SMC). The immunocytochemistry techniques were used to identify the NSc and mature protein expression with neuron marker beta-tubulin, astrocyte marker GFAP, and oligodendrocyte marker CNPase.

[Effects of prolonged selenium deficiency on synaptic structures in CA3 area of hippocampus in the third generation rats].

Objective: The relationship between selenium deficiency and the changes of synaptic structure in the CA3 area of hippocampus were studied in the third generation rats.

Methods: A selenium deficiency model was established by feeding rats with selenium-deficient food. The rats were divided into 4 groups: control (Se+I+), selenium deficiency (Se-I+), iodine deficiency (Se+I-), and both deficient group (Se-I-).

[Effect of chronic inflammation-induced basement membrane changes on esophageal carcinogenesis].

Background & Objective: Basement membrane (BM) could regulate differentiation, proliferation, and polarity of esophageal epithelium, and its integrity is important for carcinogenesis. This study was to explore the effect of the BM changes induced by chronic inflammation on esophageal carcinogenesis and its possible mechanisms through investigating the relationship of BM changes and epithelial proliferation.

Methods: The morphologic changes of BM in 10 specimens of invasive esophageal carcinoma tissue and 200 specimens of carcinoma adjacent tissue were observed with periodic acide-chiff staining (PAS); the correlations of inflammation score and histological type of esophageal epithelia to BM changes were analyzed.

Clinicopathologic analysis of esophageal and cardiac cancers and survey of molecular expression on tissue arrays in Chaoshan littoral of China.

Aim: To investigate clinical and pathologic data of esophageal carcinoma (EC) and cardiac carcinoma (CC) among residents in Chaoshan region of China.

Methods: Clinical and pathologic data of 9 650 patients with EC and 4 173 patients with CC in the Chaoshan population were collected and analyzed. Moreover, Chaoshan esophageal carcinoma tissue arrays were made for high-throughput study.