Objective To preliminarily investigate curative effect of hepatic arterial perfusion of p53 gene in the therapy of advanced hepatocellular carcinoma.Methods Tirty cases of advanced hepatocellular carcinoma were divided into experimental group and control group,p53 gene was perfused into target artery confirmed by angiography.In experimental group,10~(12)Vp of p53 gene and 20 mg OPT were employed every week as a course for 21 days and 1 to 4 courses time the cases of the study.In control group,only 20 mg OPT was used.Results The survival period was 14 to 405 days in experimental group and 18 to 167 days in control group.There was a significant difference between the two groups(P＜0.05). Conclusion p53 gene is efficacious in the therapy of advanced hepatocellular carcinoma.(J Intervent Radiol,2007,16:127-129)

Fermentation condition optimization of P. decumbens Ju-A10 for production of CMCase using three kinds of plant cellulosic wastes as carbon sources was made using RSA method. The result was that CMCase was the highest when the level of carbon source was 9. 77 % , 8. 69 % and 9. 97% , and liquid volume was 64. 7 mL, 54. 2 mL, 40. 8 mL for carbon sources of millet straw, wheat straw and paper sludge, respectively. The value of CMCase was 29. 26IU/mL, 29. 14 IU/mL, 29. 81 IU/mL, respectively, in the above cases. The value of R2 is 0. 9117 , 0. 9246, 0. 8655 , respectively. It could be concluded that the fermentation models were quite reliable. The method can be applied in optimization of fungi fermentation medium.

Objective To study the clinical characteristics and curative effects of pancreatic cystade- nocarcinoma in order to improve its diagnostic and therapeutic accuracy.Methods A retrospective analysis was done on the clinical materials of 13 cases of pancreatic cystadenocarcinoma hospitalized in Shanxi Cancer Hospital from 1990 to 2006.Results The preoperative diagnosis were as follows:pancreatic cystadenocarci- noma 6 cases,pancreatic cystadenoma 2 cases,pancreatic cancer 1 case,pancreatic pseudocyst 4 cases.The misdiagnosis rate was 53.8 %.Surgical operation was done on the 13 cases,and 10 of them were treated by radical operation.A 5-year follow-up was done on 6 still alive cases,and 1 of them lived over 11 years.3 cases were treated by palliative operation,and all of them died within 3 years.Conclusion Since there is no specific clinical manifestations of pancreatic cystadenocarcinoma,it is very difficult to get an accurate preop- erative diagnosis.Radical operation is the most effective therapeutic methods.

Panax ginseng is the king of herbs and plays important roles in the traditional Chinese medicine industry. In this paper, we summarized the development of ginseng cultivation in China and other main countries, analyzed the effects of ecological factors of soil and climate on ginseng distribution, and investigated the characteristic of main cultivation patterns (conversion of forest to cultivate ginseng soils, cultivated ginseng in the farmland and wild nursery). Aimed at the serious issues in the cultivation, research strategies have been provided to guarantee the sustainable development of the ginseng industry. The patterns of cultivated ginseng in the farmland should be strive to develop; pollution-free cultivation and studies of continuous cropping obstacles should be carried out; ginseng varieties suited to ecological environment of farmland should be bred using modern biotechnology.
Agriculture ; methods ; China ; Climate ; Ecosystem ; Panax ; chemistry ; growth & development ; Soil ; chemistry

So far there exists no corresponding quality test procedures and grading standards for the seed of Prunus humilis, which is one of the important source of base of semen pruni. Therefor we set up test procedures that are adapt to characteristics of the P. humilis seed through the study of the test of sampling, seed purity, thousand-grain weight, seed moisture, seed viability and germination percentage. 50 cases of seed specimens of P. humilis tested. The related data were analyzed by cluster analysis. Through this research, the seed quality test procedure was developed, and the seed quality grading standard was formulated. The seed quality of each grade should meet the following requirements: for first grade seeds, germination percentage ≥ 68%, thousand-grain weight 383 g, purity ≥ 93%, seed moisture ≤ 5%; for second grade seeds, germination percentage ≥ 26%, thousand-grain weight ≥ 266 g, purity ≥ 73%, seed moisture ≤9%; for third grade seeds, germination percentage ≥ 10%, purity ≥ 50%, thousand-grain weight ≥ 08 g, seed moisture ≤ 13%.
Cluster Analysis ; Germination ; Prunus ; growth & development ; Seeds ; physiology

Purpose:To investigate the efficacy of infusion gemcitabine via artery port and catheter system (PCS) for advanced pancreatic cancer.Methods:57 cases advanced pancreatic cancer proved by pathology were implanted Implantofix PCS.The number of ports implanted subcutaneously in inferior right abdomen and subcutanceusly in inferior chest was 48 and 9 cases respectively.The first total does in experience group was gemcitabine 3.0,5-FU 3.0,IL-2 6 million u via three times infusion.Results:The overall implanted successful rates was 100% and indwelling catheter tip dislocation rate was 0. Two PCS were pulled out in 2 fat old female patients because of bad wound healing after two months.In the experimental and control group according to the standard of clinical benefit-responces were 37 and 20 respectively.The obvious improve- ment in pain in experimental and control group was 27.2% and 4.8%,respectively.The duration of clinical benefit-re- sponces were 18 weeks in experimental groups,13 weeks in control group.The midian survival in experimental group was 6.25 months,4.41 months in control group.The 6-,9-,12-months survival rates in experimental group were 46%,24%, 18% more thans 31%,6% and 2% in control group.Conclusions:Infusion gemcitabine via artery PCS can not only relieve pain,prolong survival rate but also provides a long-term intra-arterial chemotherapy and effctive access for advanced pancre- atic cancer.

OBJECTIVETo investigate the feasibility of reducing THM precursors and controlling bromate taste and odor in drinking water taken from the Yellow River by an ozonation combined system.

METHODSThe appropriate ozone dosage was determined, and then the changes of TOC, UV254 and THM formation potential (THMFP) in the combined system were evaluated.

RESULTSOne mg/L ozone could effectively remove taste and odor and meet the maximum allowable bromate level in drinking water. The pre-ozonation increased THMFP, but the conventional treatment system could effectively reduce the odor. The bio-ceramic filter could partly reduce CHCl3FP, but sometimes might increase CHCl2BrFP and CHClBr2FP. The biological activated carbon (BAC) filter could effectively reduce CHCl3FP and CHCl2BrFP, but increase CHClBr2FP. Compared with other filters, the fresh activated carbon (FAC) filter performed better in reducing THMFP and even reduced CHClBr2FP.

CONCLUSIONThe combined system can effectively reduce taste, odor, CHCl3FP, and CHCl2BrFP and also bring bromate under control.

Bromates ; chemistry ; isolation & purification ; China ; Chlorine ; Humans ; Odorants ; analysis ; prevention & control ; Ozone ; chemistry ; pharmacology ; Rivers ; chemistry ; Taste ; Trihalomethanes ; chemistry ; isolation & purification ; Water Supply ; analysis ; standards

OBJECTIVETo study DNA damage, Bcl-2 and Bax expression, and ultrastructure change in spermatogenic cell of mice by cadmium exposure.

METHODSTwenty-four male mice were divided into 4 groups: 3 groups treated with cadmium chloride of 1, 5, 10 micromol x kg(-1) x d(-1) i.p. respectively for 5 days, and one normal saline control group. The DNA damage of spermatogenic cell by single-cell gel electrophoresis technology was detected. The expression positive rate of Bcl-2, Bax protein in spermatogenic cell by the immunohistochemical method was assayed, and the ultrastructural change of spermatogenic cell by the transmission electron microscope was observed.

RESULTSDNA damage rates of of spermatogenic cell in 1, 5, 10 micromol/kg cadmium chloride groups were higher than that of normal group (P < 0.001). Bcl-2 protein expression positive rates were lower than that of normal group (P < 0.001). Bax protein positive expression rate in 5 micromol/kg group was higher than those in normal group, and 1, 10 micromol/kg groups. The ultrastructure of karyotis, karyotheca, mitochondria, endoplasmic reticulum in three treated groups had different degree of damage and the degree of ultrastructural change was increasing with rising concentration of cadmium.

CONCLUSIONCadmium exposure will cause the DNA break, Bcl-2 and Bax protein abnormal expression and ultrastructural change in spermatogenic cell.

Animals ; Apoptosis ; Cadmium Chloride ; toxicity ; DNA Damage ; Male ; Mice ; Mice, Inbred ICR ; Proto-Oncogene Proteins ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; Spermatozoa ; drug effects ; metabolism ; ultrastructure ; bcl-2-Associated X Protein ; metabolism

Soil salinity is an important issue, as most crop plants are low in salt tolerance. Salt tolerance, a complex, multifactorial, and multigenic process, has been known to be a quantitative trait. The identification of the salt stress responsive genes or salt tolerance genes is essential for the breeding programs. Most recent efforts have been focused on the products of structural genes (transport proteins, ion channels, enzymes of solute synthesis) while little attention were paid to the regulatory aspects of these proteins. Since the first aquaporin gene from plants was cloned and functionally expressed in 1993, there has been a growing interest in the molecular biology of MIPs (membrane intrinsic proteins) and their bearing on the biophysics of water flow across plant membranes. In the last decades, studies on Mangroves, a special kind of wood plants, grow in high-salt and flooding conditions have been concentrated almost exclusively on their physiological and ecological characteristics. Kandelia candel, one of the dominant species of mangroves along the Chinese coast, lacks salt glands or salt hairs used for removal of excess salt in other mangroves. This makes K. candel a perfect model to study the molecular mechanism of salt tolerance in mangrove plants. Using cDNA RDA, a cDNA-specific modification of genomic representational difference analysis, a series of salt responsive genes of Kandelia candel were cloned. Among these gene fragments, a 183 bp fragment (termed as SRGKC1) encoding a tonoplast intrinsic protein (TIP) in Kandelia candel (KCTIP1) was identified. Based on the sequence of SRGKC1, two gene specific primers were designed, and the 3' and 5' end of the KCTIP1 gene were obtained using the SMART RACE cDNA Amplification Kit. RACE products were purified from low-melting agarose, and sequenced directly with GSPs as the sequencing primers. A 500-bp fragment corresponding to the 3'end of this gene was obtained using the GSP1 primer, and a 690 bp fragment corresponding to the 5' end of this gene was obtained using the GSP2 primer. Two primers that flank the putative open reading frame (ORF) were designed to obtain the cDNA containing the complete ORF by RACE PCR reaction. The full-length cDNA of KCTIP1, containing a 756 bp open reading frame (ORF), was approximately 1.1 kb; the start codon was located at the nucleotides of 99-101 and stop codon at the nucleotides of 855-857 followed by a poly (A) tail. The KCTIP1 cDNA sequence in this research was released in GenBank with accession number AF521135. Using ExPASy Proteomics tools provided by EMBL, the isoelectric point and MWt of KCTIP1 are estimated as 5.77 and 26.3 kD respectively. Transmembrane prediction analysis revealed the deduced KCTIP1 protein sequence contains six transmembrane regions at amino acid residues of 20 - 42, 57 - 79, 86 - 108, 113 - 135, 142 - 164 and 217 - 239. Two highly conserved asparagine-proline-alanine (NPA) motifs were located at 85 - 87 and 199 - 201 amino acid residues respectively. KCTIP1 is also predicted to contain the Cys residue (Cys 118) that are shown to confer Hg-sensitivity in Arabidopsis gamma-TIP and delta-TIP. Similarity analysis showed that KCTIP1 shared 77% - 79% amino acid sequence identity with the TIPs from Vitis berlandieri, Brassica oleracea and Arabidopsis thaliana. Expression analyses indicated that KCTIP1 had different expression among species of Mangroves. Expressions of KCTIP1 in Kandelia candel, Rhizophora apoculata and Ceriops tagal were suppressed by salt, and were insensitive to salt stress in unknown species of Mangroves. Previous studied showed that salt conditions might result in large and rapid changes in extracellular water potential and serious disturbance to the cytoplasm. In order to compensate for this imbalance, the relative contribution of water channels to flow across the root could thus vary. K. candel is a species that is native to intertial zone of tropical and subtropical coast and is well-adapted to salt conditions. The coordinated down-regulation of aquaporins in this plant may decrease membrane water permeability and thus increase the cellular water conserva- tion during periods of salt stress. The results reported here are consistent with the postulated roles for tonoplast water channels in regulating the hydraulic permeability of the vacuolar membranes and in adjusting the water homeostasis of the protoplasm under various physiological conditions. The identification of KCTIP1 as one of salt-responsive genes implies that intracellular osmotic equilibration is a part of salt-tolerant mechanisms in Mangroves.
Amino Acid Sequence ; Base Sequence ; Blotting, Northern ; DNA, Complementary ; genetics ; Membrane Proteins ; chemistry ; genetics ; Molecular Sequence Data ; Nucleic Acid Amplification Techniques ; Plant Proteins ; chemistry ; genetics ; Rhizophoraceae ; genetics ; Sequence Alignment

This study was designed to explore the RNA interference technique in inhibition of the expression of the mouse fibrinogen like protein 2 (mfgl2), which has been reported to be involved in the development a variety of diseases including fulminant viral hepatitis. A plasmid named p-mfgl2shRNA,complementary to the sequence of mfgl2 was constructed, while another short hairpin RNA (shRNA)which was a mutated form of the mfgl2shRNA sequences was used as a control. A plasmid named pEGFP-mfgl2 expressing the mfgl2-EGFP fusion protein was also constructed for the screening of the effect of p-mfgl2shRNA on mfgl2 expression. By cotransfection of p-mfgl2shRNA and pEGFP-mfgl2 or pcDNA3.1-mfgl2 expression construct into CHO cells or HeLa cells, the inhibition of mfgl2 expression by mfgl2shRNA was analyzed by direct observation through fluorescent microscopy, FACS, RT-PCR and immunohistochemistry staining. The experiments showed the significant inhibitory effect of p-mfgl2shRNA on mfgl2 expression at 48h post-transfection in both CHO and Hela cell lines with the inhibitory efficiency as high as 80.1%. The study demonstrated that the construct of p-mfgl2shRNA successfully interfered with the mfgl2 expression in vitro.