Three hundred and twenty-one bacteria strains were obtained from rice leaves,stem,root tissue and paddy field soil,of which the number of strains which can inhibit mycelium of Magnaporthe grisea growth markedly was fifty-seven through fermentation in 2.0 mL Eppendorf tube,and among these fifty-seven strains,five strains were strongly antagonistic to Magnaporthe grisea.These five strains was identified for their morphologic,physiological and biochemical characteristics,and the results showed that one strain(No.156)was bacillus subtilis,two strains(No.171 and No.177)were Bacillus pumillus and two strains(No.192 and No.279)were Bacillus ploymyxa.

Objective To investigate the pregnancy outcomes of couples with either maternal or paternal balanced translocations.Methods One hundred and ninety-four couples were divided into three groups based on the kind of translocations:135 with reciprocal translocation,52 with nonhomologous Robertsonian translocations,and 7 with homologous Robertsonian translocations.Past reproductive histories were surveyed.For those who wanted to have their own babies by natural conceptions after knowing their karyotypes as well as the risks of abnormal offsprings,subsequent pregnancy outcomes were recorded.Total pregnancy outcomes were compared between three groups.Results(1)503 previous and subsequent pregnancies were recorded in detail.The pregnancy outcomes are as follows:spontaneous abortions 81.7% (411/503);induced terminations because of fetal abnormalities 3.2%(16/503);birth defects 7.2% (36/503);normal/balanced offsprings 8.0%(40/503).In reciprocal translocations,nonhomologous Robertsonian translocations and homologous Robertsonian translocations,the birth defects rates were 5.7% (20/350),10.9%(14/128)and 8.0%(2/25),respectively(P

Microalgae is an easy-to-obtain natural biological material with many varieties and abundant natural reserves. Microalgae are rich in natural fluorescein, which can be used as a contrast agent for fluorescence imaging and photoacoustic imaging for medical imaging. With its active surface, microalgae can effectively adsorb functional molecules, metal elements, etc., and have good application prospects in the field of drug delivery. Microalgae can generate oxygen through photosynthesis to increase local oxygen concentration, reverse local hypoxia to enhance the efficacy of hypoxic tumors and promote wound healing. In addition, microalgae have good biocompatibility, and different administration methods have no obvious toxicity. This paper reviews the research progress on the biomedical application of microalgae in bioimaging, drug delivery, hypoxic tumor treatment, wound healing.
Drug Delivery Systems ; Humans ; Hypoxia ; Microalgae ; Oxygen ; Wound Healing

Objective To compare the clinical effect between percutaneous nephrolithotomy (PCNL) and retroperitoneal laparoscopic pyelolithotomy (RLP) in the treatment of renal pelvis calculus,so as to provide evidence for the treatment of renal pelvis calculus.Methods A total of 108 patients with renal pelvis calculus were selected from January 2012 to December 2016 in Zhumadian Central Hospital.The patients were divided into PCNL group (n =59) and RLP group (n =49) according to the therapeutic method.The operation time,intraoperative blood loss,intraoperative blood transfusion rate,operative success rate,stone clearance rate,postoperative hemoglobin reduction,postoperative analgesia time,postoperative hospitalization time and the incidence of complications were compared between the two groups.Results The success rate of operation in PC-NL group and RLP group was 94.9％ (56/59) and 100.0％ (49/49) respectively,there was no significant difference in the success rate of operation between the two groups (x2 =1.026,P ＞ 0.05).The stone clearance rate in PCNL group and RLP group was 94.9％ (56/59) and 98.0％ (48/49) respectively,there was no significant difference in the stone clearance rate between the two groups (x2 =0.140,P ＞ 0.05).The intraoperative blood transfusion rate in PCNL group and RLP group was 5.1％ (3/59) and 2.0％ (1/49) respectively,there was no significant difference in the intraoperative blood transfusion rate between the two groups (x2 =0.105,P ＞ 0.05).There was no significant difference in operation time and postoperative analgesia time between the two groups (P ＞ 0.05).Compared with the PCNL group,the blood loss and postoperative hemoglobin reduction were less,and the postoperative hospitalization time was shorter in the RLP group (P ＜ 0.05).The incidence of postoperative urinary leakage,urinary tract infection and secondary hemorrhage in PCNL group was 3.4％ (2/59),8.5％ (5/59)and 6.8％ (4/59) respectively;the incidence of postoperative urinary leakage,urinary tract infection and secondary hemorrhage in RLP group was 8.2％ (4/49),4.1％ (2/49) and 4.1％ (2/49) respectively;there was no significant difference in the incidence of postoperative urinary leakage,urinary tract infection and secondary hemorrhage between the two groups (x2 =2.975,1.064,1.811;P ＞ 0.05).Conclusion The clinical effect of PCNL and RLP in the treatment of renal pelvis calculus is fairly,and their safety is high.However,RLP has the advantages of less intraoperative bleeding,quick postoperative recovery and short hospitalization time.

Objective:To discuss the management principles and skills for treatment of intractable ureterostenosis under ureteroscope.Methods:Our management experience on 19 patients with intractable ureteral stenosis was retrospectively analyzed.The 19 cases included urological TB-caused multiple ureteral stenosis,oncothlipsis to ureters from intestinal tract or gynecology,restenosis 3 months to 12 years after pelviureteric junction plasty,operative site stenosis after ureterolithotomy. double ureter back flow accompanied by stenosis,ureter imperforation after renal parenchyma lithotomy without placing double"J",ureter imperforation 3 months after extracorporeal shock-wave lithotripsy due to ureterolith,tubal bladder stoma stenosis after renal transplantation,restenosis after tubal bladder stoma due to distal ureterostenosis,and so on.All the patients were treated under ureteroscope.The management methods included:the Wolf 8/9.8 CH12?and Wolf 6/7.6 CH5?ureteroscope was used as a dilator to dilate the stenoses:balloon expanding under ureteroscope was used to dilate the stenoses;the ureter pliers was used to expand the stenoses to different directions;the cold knife was used to open the stenoses;if the diameter of stenoses were smaller than the that of the ureteroscopes,F4.5 or F3 double"J"tubes were inserted guided by a wire under ureteroscope; and 2 or 3 weeks later,a larger tube or two tubes were introduced into the stenoses already dilated partly by the former tube. Results:Ureteroscopic method failed in treating 2 patients in our group and succeeded in treating all the other patients.The outcomes of patient were fine during 9 months to 3 years'follow-up.Conclusion:It is difficult to treat patients with intractable ureterostenoses.With good experience in manipulation of ureteroscope,the flexible application of several techniques according to the different conditions of different patients can guarantee successful treatment in most patients.

To investigate the resources of medicinal plant, such as wild Apocynum, supervised classification based on Principal Component Analysis (PCA) and texture feature were used to monitor wild medicinal plants from image captured by ZY-3 and World-view-2 and compare which satellite Image are more appropriate to monitor the wild medicinal plants. The research results shows that: for more complex growth conditions wild medicinal plants Apocynum, high-resolution images Worldview-2 is more suitable for its remote identification, the low-resolution satellite ZY-3 can only recognizes the wild medicinal plants which distributed intensively. If the study target distribution is more intensive and larger scale, and cultivated type medicinal plants, the use of satellite ZY-3 in low resolution remote sensing data to identify the target can be a good choice, it is not necessary to buy high-resolution data, in order to avoid waste of expenditure, for the scattered distribution, the high-resolution satellite imagery data may be indispensable to identify targets.
Apocynum ; chemistry ; growth & development ; China ; Conservation of Natural Resources ; Geographic Information Systems ; Plant Dispersal ; Plants, Medicinal ; chemistry ; growth & development ; Remote Sensing Technology ; methods

OBJECTIVETo explore the mRNA expression of KAI1 gene in laryngeal squamous-cell carcinoma and its clinical significance.

METHODSFresh laryngeal cancer samples taken from 40 laryngeal carcinoma cases and normal control laryngeal tissues from 9 subjects were examined with semi-quantitative reverse transcription polymerase chain reaction (RT-PCR).

RESULTSModerate, low and negative expression rates of KAI1 gene mRNA in nine normal laryngeal tissues were 33.3% (3/9), 33.3% (3/9) and 33.3% (3/9), respectively. The high, moderate, low and negative expression rates of KAI1 mRNA in 25 laryngeal cancers without lymph node metastasis were 40.0% (10/25), 28.0% (7/25), 20.0% (5/25) and 12.0% (3/25), respectively. The moderate, low and negative expression rates of KAI1 mRNA in 15 laryngeal cancers with lymph node metastasis were 20.0% (3/15), 26.7% (4/15) and 53.3% (8/15), respectively. The KAI1 mRNA expression in the laryngeal cancers without lymph node metastasis was higher than that in normal laryngeal tissues (P < 0.05). The KAI1 mRNA expression in the laryngeal cancers with lymph node metastasis was lower than that in the laryngeal cancers without lymph node metastasis (P < 0.05). The high, moderate and low expression rates of KAI1 mRNA in 10 highly differentiated laryngeal cancers were 50.0% (5/10), 30.0% (3/10) and 20.0% (2/10), respectively. The high, moderate, low and negative expression rates of KAI1 mRNA in 12 low differentiation laryngeal cancers were 8.3% (1/12), 16.7% (2/12), 16.7% (2/12) and 58.3% (7/12), respectively. The differences of KAI1 mRNA expression between high and low differentiation laryngeal cancers were statistically significant (P < 0.05).

CONCLUSIONThe decrease of KAI1 mRNA expression may be related to lymph node metastasis and low differentiation of laryngeal squamous-cell carcinoma.

Adult ; Aged ; Carcinoma, Squamous Cell ; genetics ; metabolism ; pathology ; Female ; Humans ; Kangai-1 Protein ; biosynthesis ; genetics ; Laryngeal Neoplasms ; genetics ; metabolism ; pathology ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; RNA, Messenger ; biosynthesis ; genetics ; Reverse Transcriptase Polymerase Chain Reaction

OBJECTIVETo investigate the expression of cyclooxygenase-2 (COX-2) in colorectal carcinoma and its correlation with liver metastasis of colorectal carcinoma.

METHODSThe expression of COX-2 was detected using immunohistochemical methods in 30 colorectal carcinoma tissues without liver metastasis, 30 with preoperative liver metastasis, 30 with postoperative liver metastasis and 30 surrounding normal colorectal tissues. And its correlation with gender, age, Dukes stages was analyzed too.

RESULTSThe expression of COX-2 in colorectal carcinoma was significantly higher than that in surrounding normal colorectal tissue (P < 0.05), and meanwhile, its level in colorectal carcinoma without liver metastasis was significantly lower than those in tissues with preoperative or postoperative liver metastasis (P < 0.05). The COX-2 level had no correlation with gender, age, histological type, histological grade or the preoperative serum CEA and CA 19-9 levels in colorectal carcinoma (P > 0.05), but it was related to Dukes stages and lymph node metastasis.

CONCLUSIONSCOX-2 plays a role in the course of generation, development and metastasis of colorectal carcinoma. The high expression of COX-2 in colorectal carcinoma tissues may be considered as an indicator for liver metastasis.

Adult ; Aged ; CA-19-9 Antigen ; blood ; Carcinoembryonic Antigen ; blood ; Colorectal Neoplasms ; diagnosis ; metabolism ; pathology ; Cyclooxygenase 2 ; biosynthesis ; Female ; Follow-Up Studies ; Humans ; Immunohistochemistry ; Liver Neoplasms ; metabolism ; secondary ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Predictive Value of Tests ; Retrospective Studies

Rhesus monkeys with high specific H5N1 antibody were inoculated the second time with H5N1 virus, the result of the second time H5N1 inoculation and the effect of first time H5N1 inoculation on second inoculation was evaluated. Monkeys of NO. 3, NO. 4, NO. 5 were inoculated with H5N1 allantoic fluid and NO. 6 with noninfectious allantoic fluid by intratracheal thyrocricoid puncture. Three months later, NO. 4, NO. 5, NO. 6 monkeys were infected with 7 ml TCID50 10(4.875) H5N1 allantoic fluid and NO. 3 monkey with 7 ml noninfectious allantoic fluid at the same time by the same method. Clinical symptoms were recorded and antibody response was detected by ELISA. NO. 3, NO. 4, NO. 6 monkeys were killed after 72 h post infection and NO. 5 monkey was killed after 7 days post infection. Pathologic changes of the infected monkeys' lung were examined by HE staining,immunohistochemistry and the virus in lung was detected by RT-PCR. Results showed that NO. 3, NO. 4, NO. 5 monkeys still retained high level of specific antibody, H5N1 virus only could be detected in NO. 6 monkey's lung by immunohistochemistry and RT-PCR ,and the lung of NO. 6 monkey injured worst . It can be concluded that Rhesus monkeys inoculated with H5N1 avian influenza A virus at the first time could retain a high level of specific antibody in 90 days and the clinical symptom had almost recovered, the ability of Rhesus monkeys to resist second infection of H5N1 virus was enhanced notably at that moment.
Animals ; Antibodies, Viral ; blood ; immunology ; Enzyme-Linked Immunosorbent Assay ; Immunohistochemistry ; Influenza A Virus, H5N1 Subtype ; genetics ; immunology ; pathogenicity ; Macaca mulatta ; Monkey Diseases ; immunology ; pathology ; virology ; Orthomyxoviridae Infections ; blood ; immunology ; pathology ; Reverse Transcriptase Polymerase Chain Reaction

OBJECTIVETo assess the association of single nucleotide polymorphisms (SNPs) of ubiquitin-specific protease 8 gene (USP8) with male infertility among ethnic Han Chinese from Sichuan.

METHODSA total of 316 infertile males were recruited (case group), which included 72 severe oligozoospermic (SO) cases and 244 non-obstructive azoospermic (NOA) cases. The control group consisted of 149 fertile males. The genotypes of 4 SNPs (rs2241769, rs11857513, rs7174015 and rs3743044) were determined with a Sequenom MassArray technique. The frequencies of genotype, allele and haploptye were analyzed.

RESULTSNo significant difference was detected in the allelic or genotypic frequencies of the 4 SNPs between the two groups (P>0.05). Based on linkage disequilibrium analysis and haplotype construction, the frequency distribution of haplotype CAAG showed a significant difference between non-obstructive azoospermic patients and the controls (P=0.021).

CONCLUSIONThe 4 SNPs (rs2241769, rs11857513, rs7174015 and rs3743044) of USP8 gene may not be associated with male infertility in ethnic Hans from Sichuan. While the haplotype CAAG may be a down-regulating factor for the risk of NOA.

Adult ; Asian Continental Ancestry Group ; ethnology ; genetics ; Azoospermia ; genetics ; Base Sequence ; Case-Control Studies ; China ; ethnology ; Endopeptidases ; genetics ; Endosomal Sorting Complexes Required for Transport ; genetics ; Genetic Predisposition to Disease ; ethnology ; Genotype ; Humans ; Infertility, Male ; ethnology ; genetics ; Male ; Molecular Sequence Data ; Polymorphism, Single Nucleotide ; Ubiquitin Thiolesterase ; genetics