Objective To investigate the association between microvariants at locus DYS570 and Y-SNPs haplogroup.Methods 89 Y-SNPs and 34 Y-STRs in AIYSNP42,AIYSNP47 and YfilerTM Platinum kits were used to detect the genotype of 116 microvariants at locus DYS570 in Kunming,and the Set-B kit was used to detect the core repeat sequences of the DYS570 locus.The data were statistically analyzed by direct counting method.Then,a network map was drawn by Network 10.2,in order to visualize the genetic information of the sample.Results The results demonstrated that 111 DYS570/18.3-21.3 samples had a core repeat sequence of TTT[TITC]18-21,belonging to subgroup O2a2b1a1a1a4-F14494.A DYS570/20.3 sample had a core repeat sequence of[TTTC]15TTC[TTTC]5,belonging to O2a1b1a1a1a1e-F1365 subgroup.A DYS570/17.1 sample had a core repeat sequence of[TTTC]17 T,belonging to the O2a1b1a1a1a-F11 subgroup.Three DYS570(19.2)samples had[TTTC]3 TT[TTTC]16,belonging to the D1a1a-M15 haplogroup.Conclusion The results indicated that the microvariant with the same core repeat structure at locus DYS570 was associated with haplogroups,and the ancestry origin of samples can be inferenced from microvariant characteristics during the practice of forensic medicine.

Objective To investigate the association of the DYS527a/b and DYF387S1a/b multi-allele pattern with Y-SNP haplogroups.Methods Samples from 295 unrelated males who carrying the DYS527a/b multi-allele pattern were amplified by the YFilerPlus? kit.The genotypes of their frequency distributions,including three multi-copy loci(DYS527a/b,DYF387S1a/b,DYS385a/b)and other single-copy loci were obtained.The DYS527a/b multi-allele pattern and their haplotypes were examined for the associations with Y-chromosome haplogroups using the AIYSNP42 kit,which contains 42 Y-SNP loci.Based on the above results,the association between the DYS527a/b multi-allele patter and its constituent Y-STR haplotypes and related haplogroups was discussed.Results Among the 295 samples,the DYS527a/b tri-allele pattern and tetra-allele pattern accounted for 97.29%and 2.71%respectively,while the DYF387S1a/b tri-allele pattern and tetra-allele encompassed 54.24%and 4.75%.Null allele was detected in DYS448 in 13.22%of the samples.Here,7 Y-SNPs were deticted such as O-M175 and C-M131 which encompassed 45.76%and 45.08%.The haplogroups of R1-M173,N-M231,D1-M174,J-M304 and F-M89 were less than 13 cases,with frequencies ranging from 4.41%～0.34%.There were Y-STR genotypes differences among haplogroups,as haplogroup O-M175 was represented by 4 genotypes of Y-STR profiles characterized by DYS385a/b(12/12,as well as 12/17,12/18,12/19),DYS392(13),DYS593(16)and DYS393(12),and haplogroup C-M130 was characterized by DYS527a/b(19/20/21),DYS385a/b(11),DYS593(17),DYS390(23),Y_GATA_H4(11),and DYS444(13)and so on.Conclusion The DYS527a/b multi-allele pattern is frequently observed in the Kunming population with haplogroup C-M130.In the samples from haplogroups O,C,R1 and N,the DYS527a/b and DYF387S1a/b haplotypes frequently exhibit the multi-allele pattern.Given the frequencies of different haplogroups and the association between Y-SNP haplogroups and Y-STR loci,it could be helpful to look for more details in the paternal lineage search.

OBJECTIVE： To establish a method for simultaneous determination of contents of β-pinene， linalool， L-camphor， L-borneol， β-caryophyllene and xanthoxylin in the oil of Blumea balsamifera. METHODS： GC method was adopted. The determination was performed on RTX-1701 capillary column （programmed temperature）. The FID detector was controlled at 240 ℃. The inlet temperature was set at 240 ℃. The carrier gas was high-purity nitrogen 3 mL/min. The the sample size was 0.5 μL， and split ratio was 50 ∶ 1. RESULTS： The linear range of β-pinene， linalool， L-camphor， L-borneol， β-caryophyllene and xanthoxylin were 0.029 7-0.267 1 mg/mL （r＝0.999 9）， 0.024 3-0.218 9 mg/mL （r＝0.999 9）， 0.126 0-1.134 0 mg/mL （r＝0.999 9）， 0.217 2-1.954 8 mg/mL （r＝0.999 9）， 0.136 3-1.226 9 mg/mL （r＝0.999 9）， 0.044 5-0.400 3 mg/mL（r＝0.999 5）， respectively. The limits of quantitation were 0.028 5， 0.008 7， 0.018 6， 0.016 8， 0.014 5， 0.042 1 mg/mL； the limits of detection were 0.009 4， 0.002 9， 0.006 1， 0.005 5， 0.004 8， 0.013 9 mg/mL， respectively. RSDs of precision， stability， reproducibility and durability tests were all lower than 3％. The average recoveries were 98.13％-101.30％（RSD＝1.20％，n＝9），98.44％-101.81％（RSD＝1.28％，n＝9），98.26％-101.05％（RSD＝1.19％，n＝9），99.08％-101.58％（RSD＝0.89％，n＝9），98.66％-101.66％（RSD＝1.17％，n＝9），98.84％-103.60％（RSD＝0.96％，n＝9）， respectively. The contents of 6 components in the sample were 14.552-46.766， 16.951-22.096， 80.597-113.115， 205.224-242.537， 47.761-135.697， 26.493-45.771 mg/g， respectively. CONCLUSIONS： The established method is simple， accurate， precise and reproducible， which can be used for simultaneous determination of contents of 6 components in the oil of B. balsamifera. It can provide reference for comprehensive evaluation and extraction technology study of the oil of B. balsamifera.

Objective To evaluate the therapeutic effect of antibiotics combined with recombinant tuberculosis vaccine AEC/BC02 on Mycobacterium tuberculosis infection in guinea pigs. Methods Two weeks after guinea pigs were challenged subcutaneously with a high dose of Mycobacterium tuberculosis,the guinea pigs with the positive skin test responses to the recombinant ESAT6-CFP10 allergen were randomly di-vided into four groups:normal saline (NS),AEC/BC02,antibiotics and antibiotics+AEC/BC02. In antibiotics+AEC/BC02 group,guinea pigs firstly received isoniazid ( INH) and rifapentine ( RFT) treatment once a week for a total of three times,and then were immunized with a single dose of AEC/BC02 vaccine six times at 10-day intervals. Guinea pigs in AEC/BC02 and antibiotics groups were respectively vaccinated with AEC/BC02 vaccine and given INH and RFT treatment at the same dose and frequency as given to antibiotics+ AEC/BC02 group. Thirteen weeks after challenge,all guinea pigs were sacrificed for necropsy. Results The gross pathological scores of NS,AEC/BC02,antibiotics and antibiotics+AEC/BC02 groups were 83±8,77± 22,45±28 and 19±14,respectively. Antibiotics+AEC/BC02 group had a significantly lower gross pathological score than antibiotics,AEC/BC02 and NS groups (P<0. 05,P<0. 01,P<0. 01,respectively). Moreover,the gross pathological scores of antibiotics and AEC/BC02 groups were significantly decreased as compared with that of NS group (both P<0. 01). However,there was no significant difference between AEC/BC02 and NS groups. The spleen bacterial load of antibiotics+AEC/BC02 group was (2. 50±1. 26) lg CFU,which was sig-nificantly lower than those of NS [(4. 92+0. 52) lg CFU],AEC/BC02 [(4. 78+0. 84) lg CFU] and antibi-otics [(4. 39+0. 50) lg CFU] groups (P<0. 01). Compared with NS group,antibiotic and AEC/BC02 groups showed no significant difference in spleen bacterial load. Histopathological changes indicated different levels of granulomatous lesions appeared in lung tissues of all groups and the most severe change was ob-served in AEC/BC02 group,followed by that in NS,antibiotics and antibiotics+AEC/BC02 groups. Conclu-sion INH and RFT treatment in combination with AEC/BC02 vaccine in the treatment of guinea pigs with Mycobacterium tuberculosis infection was superior to either treatment alone as it significantly alleviated organ lesions and lowered the bacterial loads in spleen and lung.

Objective To identify the cross-reactive antigens shared by Mycobacteria smegmatis(MS) and Mycobacteria tuberculosis(MTB) and to analyze their antigenicity.Methods Bacterial antigens were extracted from strains of MS and MTB by ultrasonication.Western blot assay was performed to analyze common antigens that reacted with both of the antiserum samples against MS and MTB.The extracted bacterial antigens were mixed with incomplete Freund′s adjuvant and then were injected into muscles of mice.Cytokines secreted by murine spleen lymphocytes following stimulation with various antigens of MS and MTB were determined by ELISPOT and flow cytometry on the 7th day.IgG levels in serum samples were detected by ELISA 7 days after injection.Results There were cross-reactive antigens shared by MS and MTB.Potent humoral immune responses and cellular immunity against both MS and MTB could be induced by those cross-reactive antigens after sensitization the mice by either MS or MTB antigens.Cytokines of IL-2 and IFN-γ in CD4+ and CD8+T cells of mice stimulated with MS or MTB antigens were significantly increased as compared with those of non-sensitization group and those of Brucella antigens stimulation group.ConclusionCross-reactive antigens shared by MS and MTS can effectively promote specific immune reactions to the infection of MTB, which provides a scientific basis for the development of tuberculosis vaccines.

Objective To compare the effects of sufentanil and fentanyl anesthesia on blood glucose and insulin levels in patients undergoing laparoscopic cholecystectomy,and explore the mechanism using metabonomics technique.Methods Total 60 patients,37 males and 23 females,ASA physical status Ⅰ or Ⅱ undergoing laparoscopic cholecystectomy were randomly divided into sufentanil and fentanyl groups,and 30 cases in each group.Venous blood was collected before anesthesia and 5 min,40 min and 2 h after anesthesia,which was used to detect blood glucose,insulin levels and metabonomics analysis.Results Blood glucose were significantly lower in sufentanil group than in fentanyl group at 5 min after intubation,40 min in surgery,and postoperative 2 h (P＜0.05).After 2 h,insulin in sufentanil group was significantly lower than that in fentanyl group (P＜0.05).Metabolic analysis showed that in the positive ion mode,using orthogonal partial least squares discriminant analysis,the patients in the two groups were classified according to the serum metabolites at postoperative 2 h,which showed that the serum metabolites in patients of different groups were significantly different,and 5 biomarkers closely related to blood glucose and insulin were found.Conclusion Sufentanil showed slighter effects on blood glucose and insulin in patients,and more suitable for cholecystectomy patients.The mechanism may be related with the glucose and insulin metabolism.

OBJECTIVETo investigate the characteristics of null allele for 17 Y-chromosomal short tandem repeats (Y-STR) loci in a group of infertile males.

METHODSTwo hundred thirty six infertile males featuring non-obstructive azoospermia and severe oligozoospermia were analyzed with an AmpFISTR ((R)) Yfiler (TM) kit. Deletions of azoospermia factor (AZF) fragments were confirmed with Y chromosome sequence-tagged sites (STSs) analysis using modified multiplex PCR.

RESULTSThe overall prevalence of AZF microdeletions was 16.95% (40/236). In the non-obstructive azoospermia group, 13 cases had AZFc deletion, 6 cases had AZFb+c deletion, 2 cases had AZFa deletion, 1 case had AZFb deletion. In the severe oligozoospermia group, 17 cases had AZFc deletion and 1 had AZFb deletion. No AZFa+b+c deletion was detected. Forty cases showed null alleles by scanning of the 17 STR loci. Deletions of DYS438, DYS439, DYS437, DYS389I and DYS389II were found in the 2 cases with AZFa deletion. In patients with AZFb deletion, DYS392 and DYS385a/b were found deleted. Deletions of DYS448 were detected in all of the 30 cases with AZFc deletion. Deletions of DYS392, DYS385a/b, and DYS448 were found in 6 cases with AZFb+c deletion.

CONCLUSIONDeletions of the Y chromosome AZF regions are associated with azoospermia and severe oligozoospermia. Null allele due to complete absence of AZFa, AZFb and AZFc regions may lead to misinterpretation in the sexual assault cases. Revealing the locus heterogeneity in male infertility population can enrich the Y-STR database and facilitate interpretation STR data in forensic DNA testing.

Objective To comparatively evaluate the effects of a recombinant Mtb protein ESAT 6-CFP10 ( rESAT6-CFP10 ) and a purified protein derivative ( PPD ) as skin test reagents in guinea pigs . Methods Guinea pigs were sensitized with different Mycobacteria species .After sensitization , all guinea pigs were intradermally injected with rESAT6-CFP10 and PPD.At 48 h after the injection, the size of ery-thema at injection sites was measured by using a double-blind method .For guinea pigs sensitized with viable Mtb, the size of erythema at injection sites were measured at 24 h after the injection .The positive conversion rates of skin test with rESAT 6-CFP10 and PPD were calculated .Results The results of PPD skin test were positive in all guinea pigs sensitized with viable Mtb , killed Mtb and BCG with erythema diameters of (11.4 ±0.9) mm, (11.8±1.1) mm and (13.2±0.8) mm, respectively.Positive skin test with rESAT6-CFP10 was only observed in guinea pigs infected by viable Mtb-showing erythema diameters of (13.7±5.7) mm. The skin test with rESAT6-CFP10 was negative in guinea pigs sensitized by killed Mtb-and vaccinated by BCG.The skin tests by using rESAT6-CFP10 and PPD were performed on randomly selected guinea pigs at ninth day after infection by Mycobacterium tuberculosis H37Rv.At the 2nd week, totally 24 selected guinea pigs showed positive skin test results with rESAT6-CFP10 (24/24) with erythema diameters of (19.9± 3.0) mm, while only 15 out of 24 had positive PPD skin test with erythema diameters of (6.1±5.5) mm. At the 4th week, all guinea pigs showed positive PPD skin test (3/3) with erythema diameters of (12.7± 2.5) mm.Conclusion The skin test by using recombinant ESAT 6-CFP10 protein can effectively distin-guish viable Mtb infection from BCG vaccination and killed Mtb sensitization , which is a more suitable anti-gen than PPD for the early diagnosis of Mtb infection .

Objective To establish a suitable guinea pig model for evaluating the protective effects of new therapeutic TB vaccines in preclinical study .Methods The guinea pigs were subcutaneously injected with single-cell suspension of multi-drug resistant M.tuberculosis at a dose of 1000 CFU, 0.2 ml per animal.The study was divided into experimentⅠand experimentⅡ.In experimentⅠ, the guinea pigs were given immuno-therapy and/or chemical treatment on day 3 after infection .Four guinea pigs in each group were dissected at weeks 5, 7 and 9 after infection for evaluating lesion scores and histopathology changes of liver , spleen and lung, as well as bacterial load in spleen .In experimentⅡ, the guinea pigs were given immunotherapy and/or chemical treatment with different doses on day 14 after infection .All guinea pigs were dissected at week 5 after infection for evaluating lesion scores of liver , spleen and lung , as well as bacterial load in spleen .Results In experimentⅠ, all of the three treatments including immunotherapy combined with chemotherapy , immunotherapy alone and chemotherapy alone could effectively prevent organ lesion and reduce bacterial load in spleen , which were significantly different from negative control group .The immunotherapy combined with chemotherapy showed better treatment effects than other two treatments .Along with a prolonged period after drug withdrawal , the de-gree of organ lesion in immunotherapy group and chemotherapy group rebounded sharply , but only slightly in im-munotherapy combined with chemotherapy group .In experimentⅡ, animals in all treatment groups showed alle -viated organ lesion and reduced bacterial load in spleen .A relatively better treatment effect was observed in im-munotherapy combined with chemotherapy group .Conclusion The established guinea pig model of M.tubercu-losis infection showed an advantage of good repeatability .It might be used to evaluate the protective effects of new therapeutic vaccines against tuberculosis in preclinical study .

Objective To establish a guinea pig model of latent Mycobacterium tuberculosis infec-tion for evaluating the effects of therapeutic vaccines .Methods Guinea pigs were subcutaneously inocula-ted with 5.0×103 CFU Mtb.The skin test was performed with 0.5μg recombinant ESAT6-CFP10 protein to detect positive conversion rates at different time points .Two weeks after Mtb inoculation , guinea pigs in model group received 5 mg isoniazid treatment ( three times a week for four weeks ) by oral gavage , while those in control group received normal saline .At the sixth week after Mtb infection , guinea pigs with and without isoniazid treatment were dissected for pathology examination .The pathological scores of liver , spleen and lung, as well as bacteria loads in spleen were compared between two groups .The established guinea pig model of latent infection was then validated by testing two reference vaccines ( AEC/BC02 and AEC/BC03 ) . Results Two weeks after Mtb inoculation , all guinea pigs showed positive EC skin test with induration area of (19.9±3.0) mm.Upon four weeks of isoniazid treatment , the guinea pigs in model group showed no pathological changes with zero scores in the examined organs .No bacterium was detected in spleen of ani-mals from model group.However, the total pathological score was 38.8±16.5 and bacteria load in spleen was (5.1±0.3) Log10 CFU with the guinea pigs from control group .Natural recurrence of tuberculosis in model group was observed after drug withdrawal .The total pathological scores were 48.5±23.9 and 51.3± 23.41.The bacterial loads in spleen were (4.5±1.3) and (4.2±1.1) Log10 CFU and bacterial loads in lung were (4.1±1.2) and (3.4±1.3) Log10 CFU respectively as verified with reference vaccines of AEC /BC02 and AEC/BC03.Conclusion Isoniazid treatment inhibited the proliferation of inoculated Mtb in guinea pigs.A guinea pig model of latent Mycobacterium tuberculosis infection is successfully established with an advantage of good repeatability .Therefore, it can be used to evaluate the effects of therapeutic vaccines on latent Mycobacterium tuberculosis infection.