Publications by authors named "Sien Zeng"

Subsequently to the publication of the above article, an interested reader drew to the authors' attention that a pair of data panels showing the results of immunohistochemical staining experiments in Fig. 1 on p. 2210 had already appeared in a previously published paper (Zhang Y, Li Y, Lin C, Ding J, Liao G and Tang B: Aberrant upregulation of 14‑3‑3σ and EZH2 expression serves as an inferior prognostic biomarker for hepatocellular carcinoma.

View Article and Find Full Text PDF

Although poly (ADP-ribose) polymerase family member 10 (PARP10) has been implicated in the progression of multiple cancer types, its role in oral squamous cell carcinoma (OSCC) remains unknown. This study aimed to examine the function of PARP10 in OSCC and investigate the underlying mechanisms. The expression of PARP10 in OSCC was investigated in OSCC patient cohorts.

View Article and Find Full Text PDF

Estrogen evidently exerts a protective role against gastric cancer. Accordingly, we evaluated the relationship between the expression of the estrogen receptor ER-α36 and the clinicopathologic features in gastric cancer. ER-α36 expression levels differed among the tumor center, invasion front, and vascular metastases.

View Article and Find Full Text PDF

Background And Aim: Our study aimed to investigate the ways by which HOXB7 affects gastric cancer progression and oxaliplatin (L-OHP) resistance.

Methods: First, the expression of HOXB7 in paired cancer and paracancerous tissues of L-OHP-sensitive and L-OHP-resistant gastric cancer patients was qualitatively and quantitatively analyzed by immunohistochemistry. Then, the expression of HOXB7 in these tissues was further quantitatively analyzed at protein and transcriptional levels.

View Article and Find Full Text PDF

Introduction: Cervical cancer rates in China remain high, with only limited opportunistic screening in urban centers and large mostly unscreened rural areas. Cervical cytology practices in China have been changing over the last decade with introduction of The Bethesda System reporting terminology, liquid-based cytology (LBC), and programs for cervical cytology screening of underserved rural populations. An effort was undertaken for the first time to collect nationwide data on cervical cytology laboratory practices in China, a possible first step toward increased standardization and potential development of nationwide cytology quality benchmarks.

View Article and Find Full Text PDF

Cadmium is a heavy metal that is toxic to humans and the reproductive system. The present study aimed to investigate the mechanisms of cadmium-induced reproductive toxicity in a male Institute of Cancer Research mouse model of cadmium poisoning. Changes in luteinizing hormone receptor (LHR), 17α-hydroxylase and endothelial nitric oxide (NO) synthase (eNOS) expression levels were examined.

View Article and Find Full Text PDF

Oral cancer is a common cancer of the head and neck. Oral squamous cell carcinoma (OSCC) represents almost 90% of the total cases of head and neck cancer. Ubiquitin-specific protease 22 (USP22) is a deubiquitinating hydrolase, and it is highly expressed in various types of cancer, which also typically have a poor prognosis.

View Article and Find Full Text PDF

Survivin is a bifunctional protein that suppresses apoptosis and regulates cell division, and is highly expressed in various cancer types. Mucins are high-molecular-weight, heavily glycosylated proteins. In the present study, the association between survivin, mucin 2 (MUC2) and MUC5 expression, and the clinicopathological features of colorectal cancer (CRC) were investigated.

View Article and Find Full Text PDF

In this study, we developed a systemic PD model in middle-aged cynomolgus monkeys using individualized low-dose MPTP, to explore effective indicators for the early prediction of clinical outcomes. MPTP was not stopped until the animals showed typical PD motor symptoms on days 10 to 13 after MPTP administration when the Kurlan score reached 10; this abrogated the differences in individual susceptibility to MPTP. The clinical symptoms persisted, peaking on days 3 to 12 after MPTP withdrawal (rapid progress stage), and then the Kurlan score plateaued.

View Article and Find Full Text PDF

Poly (ADP-ribose) polymerases (PARPs) are enzymes that transfer ADP-ribose groups to target proteins and are involved in a variety of biological processes. PARP6 is a novel member, and our previous findings suggest that PARP6 may act as a tumor suppressor via suppressing cell cycle progression. However, it is still unclear that PARP6 function besides growth suppression in colorectal cancer (CRC).

View Article and Find Full Text PDF

Betaine homocysteine methyltransferase (BHMT) catalyzes the synthesis of methionine using betaine and homocysteine (Hcy), which is restricted to the liver and kidney. Impaired BHMT pathway has been associated with hepatocellular carcinogenesis in Bhmt-/- mice model, and decreased BHMT was observed in a small sample of human hepatocellular carcinoma (HCC) patients. However, the prognostic significance of BHMT in HCC has not been elucidated.

View Article and Find Full Text PDF

Hepatocellular carcinoma (HCC) is the most common primary malignant liver tumor type, ranking as the third leading cause of all cancer-related deaths in the world. The post-surgical 5-year survival rate is low, largely due to the high recurrence rate. Therefore, the identification of target molecules that control the biological characteristics of HCC is of great importance.

View Article and Find Full Text PDF

Obesity is one of the leading causes of numerous types of cancer. The present study investigated the impact of a high-fat diet on 1,2-dimethylhydrazine (DMH)-induced colorectal cancer (CRC) in F344 rats. A total of 16 male F344 rats aged 4 weeks were randomly divided into two groups (8 rats/group).

View Article and Find Full Text PDF

Bread is rich in dietary fibre and many phytochemical compounds, which may influence chemoprevention of colon cancer. In the present study, we evaluated the effect of three kinds of bread on DMH-induced colorectal tumours in F344 rats. F344 rats were divided into four groups (Steinmetz Three-Grain bread, Steinmetz Country bread, White bread, and MF).

View Article and Find Full Text PDF

Objective: Long-term exposure study was conducted to investigate the effects of extremely low-frequency electromagnetic field on the tumor promotion process and fertility.

Methods: Ten pregnant C57BL/6NCrj mice were exposed to 50 Hz field 500 mG for 1 week (12 h per day), and 24 male and 42 female B6C3F1mice born from them were further exposed up to 15.5 months.

View Article and Find Full Text PDF

Background: Biochanin A and formononetin are O-methylated isoflavones that are isolated from the root of Astragalus membranaceus, and have antitumorigenic effects. Our previous studies found that formononetin triggered growth-inhibitory and apoptotic activities in MCF-7 breast cancer cells. We performed in vivo and in vitro studies to further investigate the potential effect of biochanin A in promoting cell proliferation in estrogen receptor (ER)-positive cells, and to elucidate underlying mechanisms.

View Article and Find Full Text PDF

The present study investigated the protein expression levels of cluster of differentiation (CD)95, caspase‑8, caspase‑3 and poly(ADP‑ribose) polymerase 1 (PARP1) in liver cancer and its association with clinical pathological parameters. The results demonstrated that the expression of CD95 correlated with histological differentiation, liver cirrhosis, lymph node metastasis and distant metastasis (P<0.05), however, no correlations with gender, age, quantity of tumor nodules or T stage were observed (P>0.

View Article and Find Full Text PDF

Prostate cancer is one of the most prevalent malignant cancers in men. The isoflavone formononetin is a main active component of red clover plants. In the present study, we assessed the effect of formononetin on human prostate cancer DU-145 cells in vitro, and elucidated possible mechanisms.

View Article and Find Full Text PDF

Hepatocellular carcinoma (HCC) is a highly invasive type of cancer. Metastasis is the leading cause of mortality of advanced HCC patients. In the metastasis cascade, cancer cells undergo epithelial-mesenchymal transition resulting in the loss of cell‑to‑cell adhesion, migration and invasion into the stroma.

View Article and Find Full Text PDF

Advanced human aging is associated with progressive declines of motor function and a risk factor for Parkinson's disease, which mainly involves central nigrostriatal dopaminergic system. The present study investigated age-related changes in motor behaviors and alterations of the number of nigrostriatal dopaminergic terminals in non-human primates. A total of 30 cynomolgus monkeys (Macaca fascicularis) of age 3.

View Article and Find Full Text PDF

Objective: To detect the cell-surface-expressed nucleolin and investigate its tumor suppressing effect on the growth of hepatocellular carcinoma cells.

Methods: To detect cell-surface-expressed nucleolin in the hepatocellular carcinoma cells by immunofluorescence and flow cytometry. To down-regulate the nucleolin expression level in hepatocellular carcinoma cells by RNA interference.

View Article and Find Full Text PDF

This longitudinal study addressed the sequential events and metabolic consequences of lipid partitioning following uninephrectomy. Adult male Sprague-Dawley rats were randomized into sham operation (n = 15) or left uninephrectomy (UNX, n = 18). At 1 and 3 months post nephrectomy, three rats from each group were killed for histopathological examination of adipocyte differentiation and lipid accumulation.

View Article and Find Full Text PDF
Article Synopsis
  • * Out of 57 samples, 15.8% exhibited chromosome translocations, with notable findings including t(11;18) and t(14;18) translocations, and significant instances of increased gene copies, particularly for bcl-6 and MALT1.
  • * Research findings highlight geographic differences in genetic mutations between southern and northern Chinese patients, indicating the influence of location on the genetic landscape of ocular MALT lymphomas.
View Article and Find Full Text PDF

Background: The existence of neurogenesis in the hippocampus of adult nonhuman primates has been confirmed in recent years, however, the biological properties of adult neural stem cells or neural progenitor cells (NPCs) from this region remain to be extensively explored. The present work was to investigate on the expansion of NSCs/NPCs from the hippocampus of adult cynomolgus monkeys and the examination of their characteristics in vitro.

Methods: NPCs isolated from the hippocampus of adult cynomolgus monkeys were expanded in vitro in serum-free media containing growth factors, and were then allowed to differentiate by removing mitotic factors.

View Article and Find Full Text PDF