Zhongtian Bai

Lanzhou University, Kao-lan-hsien, Gansu Sheng, China

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Publications (8)18.41 Total impact

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    ABSTRACT: Alpha-fetoprotein not only serves as a diagnostic marker for liver cancer, but also posses a variety of biological functions. However, the role of Alpha-fetoprotein on tumor angiogenesis and cell invasion remains incompletely understood. In this study, we aimed to evaluate if Alpha-fetoprotein can regulate the major angiogenic factors and matrix metalloproteinases in human liver cancer cells. Alpha-fetoprotein silencing was achieved by Stealth RNAi. Expression of Alpha-fetoprotein was examined by a full-automatic electrochemistry luminescence immunity analyzer. Expression of VEGF, VEGFR-2, MMP-9, and MMP-2 was examined by Western blot and immunocytochemistry. Apoptosis was detected by TUNEL assay. Angiogenesis was detected by in vitro angiogenesis assay kit. Silencing of Alpha-fetoprotein led to an increased apoptosis, which was associated with a decreased expression of vascular endothelial growth factor, vascular endothelial growth factor receptor 2, matrix metalloproteinases-2/9. These results suggest that Alpha-fetoprotein may play a regulatory role on angiogenesis and cell invasion during liver cancer development.
    Full-text · Article · Feb 2014 · PLoS ONE
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    ABSTRACT: p73, has two distinct promoters, which allow the formation of two protein isoforms: full-length transactivating (TA) p73 and an N-terminally truncated p73 species (referred to as DNp73) that lacks the N-terminal transactivating domain. Although the exact cellular function of DNp73 is unclear, the high expression levels of the genes have been observed in a variety of human cancers and cancer cell lines and have been connected to pro-tumor activities. Hence the aim of this review is to summarize DNp73 expression status in cancer in the current literature. Furthermore, we also focused on recent findings of DNp73 related to the biological functions from apoptosis, chemosensitivity, radiosensitibity, differentiation, development, etc. Thus this review highlights the significance of DNp73 as a marker for disease severity in patients and as target for cancer therapy.
    Full-text · Article · May 2013 · Cell cycle (Georgetown, Tex.)
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    Wenbo Meng · Jinqiu Yuan · Chuanlei Zhang · Zhongtian Bai · Wence Zhou · Jun Yan · Xun Li
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    ABSTRACT: Aim: To assess the efficiency and safety of parenteral analgesics for pain relief in acute pancreatitis. Materials and methods: We carried out an electronic search of PubMed, Cochrane Library, EMBASE, WEIPU, CNKI and CBM and a manual search for eligible studies. The methodological quality of included trials and quality of evidence were examined by the Cochrane Collaboration's tool for assessing risk of bias and GRADE, respectively. The data were mainly analyzed descriptively and some were pooled by Review manager 5. Results: Eight randomized controlled trials with a total of 356 patients were finally included in this systematic review. Compared with procaine, pentazocine led to lower pain severity: day 1, Mean Difference (MD), 95%CI: 40.0 [35.3, 44.7]; day 2, MD, 95%CI: 24.00 [20.88, 27.12]; day 3, MD, 95%CI: 5.00 [2.17, 7.83], and it decreased the requirement for additional analgesics, Relative Risk, 95%CI: 2.23 [1.63, 3.05]. The combination of fentanyl, atropine, droperidol and lidocaine rendered lower pain score: day 1, MD, 95%CI: -5.46 [-6.95, -3.97]; day 2, MD, 95%CI: -5.78 [-7.39, -4.17]. Patients treated with metamizole tended to had lower pain than those treated with morphine, MD, 95%CI: -2.60 [-2.95, -2.25]. Nausea, emesis and vomiting were the common adverse events reported and there was almost no significant difference between different agents on safety. Conclusions: The systemic review showed that the randomized controlled trials comparing different analgesics were of low quality and did not favor clearly any particular analgesic for pain relief in acute pancreatitis.
    Full-text · Article · May 2013 · Pancreatology
  • Qin Pu · Zhongtian Bai · Ziaul Haque · Jianlin Wang · Ruijin Huang
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    ABSTRACT: The accessory nerve (nervus accessorius) displays a unique organization in that its axons ascend along the rostrocaudal axis after exiting the cervical spinal cord and medulla oblongata and thereafter project ventrally into the periphery at the first somite level. Little is known about how this organization is achieved. We have investigated the role of somites in the guidance of motor axons of the accessory nerve using heterotopic transplantations of somites in avian embryos. The formation of not only accessory nerve but also the vagal nerve was affected, when a more caudal occipital somite (somite 2-4) was grafted to the position of the first occipital somite. Our study reveals that only the first occipital somite permits the development of ventral projection of accessory axons, a process that is inhibited by more caudal occipital somites.
    No preview · Article · Apr 2013 · Neuroscience
  • A. Li · Lifen Zhao · Zhongtian Bai · Guoqiang Yuan · J. Li · Guoqiang Song · Jianlin Wang
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    ABSTRACT: The hyoid bone of the bactrian camel was studied for the first time by means of anatomy and three-dimensional reconstruction. The results showed that the hyoid bone was composed of one body (basihyoideum) and four pairs of cornua, viz., thyroid cornu (thyrohyoideum), small cornu (ceratohyoideum), middle cornu (epihyoideum) and great cornu (stylohyoideum). The basihyoideum had no lingual process. The stylohyoideum was the largest and longest while the epihyoideum and thyrohyoideum were almost equal in length. The ceratohyoideum was the smallest. The characteristics of the hyoid bone in the bactrian camel were similar to the dromedary, but which was different from other domestic animals in morphology.
    No preview · Article · Dec 2011 · Journal of Camel Practice and Research
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    ABSTRACT: PI3K/AKT constitutes an important pathway regulating the signaling of multiple biological processes and plays a critical role in carcinogenesis. PIK3CA gene missense mutations have been reported in many human cancer types. The mutation of it in hepatocellular carcinoma cases varies with different races and regions. In this study, we investigated PIK3CA mutation in Chinese hepatocellular carcinoma patients. A total 90 Chinese patients of hepatocellular carcinoma were recruited in this study. Exons 9 and 20 hotspots mutations of PIK3CA gene were detected by PCR-based DNA sequencing. Two point mutations (E542K and D549H) in exon 9 were found in only one patient (1/90; 1.11%), no mutation was found in exon 20 in any cases. 57 patients are associated with HBV infection (57/90; 63.3%), and 8 patients with HCV infection (8/90; 8.9%). The frequency of the PIK3CA mutations in hepatocellular carcinoma seems to be lower in Chinese hepatocellular carcinoma patients. These findings suggest that PI3K mutations may not play a major role in hepatic carcinogenesis in Chinese. HBV infection has close relationship with HCC in Chinese.
    Full-text · Article · Jun 2011 · Pathology & Oncology Research
  • Guoqiang Yuan · Jinghong Ma · Wenling Ye · Zhongtian Bai · Jianlin Wang
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    ABSTRACT: The aim of present study was to determine the origin, distribution and course of the coronary arteries in Bactrian camels. Ten hearts of adult healthy Bactrian camels of different sex constituted the material. Following exposition of the arteries by means of injection of 15% ABS coloured with red carmine to a. coronaria sinistra and a. coronaria dextra, dissection was performed. The arterial vascularization of the heart in Bactrian camels was determined to be supplied by a. coronaria sinistra and a. coronaria dextra which originate from the aorta. The results showed that ramus interventricularis subsinuosus is one branch of a. coronaria dextra in Bactrian camels, which is characteristic of a. coronaria dextra pattern. Ramus septi interventricularis that supplied the interventricular septum mainly originates from ramus interventricular paraconalis. Two muscular bridges ware observed crossing ramus interventricular paraconalis in the middle third of sulcus interventricularis paraconalis. Muscular bridge was not found above ramus interventricularis subsinuosus in this study.
    No preview · Article · Dec 2008 · Veterinary Research Communications
  • Jingchen Chen · Zhongtian Bai · Chengjuan Gao · Jianlin Wang
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    ABSTRACT: Detailed description of the brain size, rhinencephalon and hippocampal formation of the Bactrian camel is presented in our study. The brain weight of the Bactrian camel is 626 g averagely, and the encephalization quotient (EQ) value 1.3, indicating a high level of intelligence. The rhinencephalon is mature and well developed, accordant with the good olfactory sense. The hippocampus is relatively large, concomitant with the good ability of spatial memory. These anatomical features agree with the corresponding adaptive behaviors of the Bactrian camel and provide a morphological evidence of the camel to adapt to the acrid and semi- acrid environment.
    No preview · Article · Aug 2008 · Veterinary Research Communications

Publication Stats

24 Citations
18.41 Total Impact Points

Institutions

  • 2008-2014
    • Lanzhou University
      • School of Life Science
      Kao-lan-hsien, Gansu Sheng, China
  • 2013
    • University of Bonn
      Bonn, North Rhine-Westphalia, Germany
  • 2011-2013
    • Lanzhou University Second Hospital
      Kao-lan-hsien, Gansu Sheng, China