1.Effect of GPI-PLD on adhesion function of bone marrow mononuclear cell from patients with myeloid leukemia and its mechanism.
Guang-Fen XIAO ; Fang-Ping CHEN ; Bin FU ; Guang-Pin WANG ; Zai-Fu JIAN
Journal of Experimental Hematology 2005;13(3):369-372
To explore the effect of glycosyl-phosphatidyl inositol-specific phospholipase D (GPI-PLD) on the adhesion function of bone marrow mononuclear cell from patients with myeloid leukemia and analyze its mechanism, the activity of GPI-PLD in bone marrow mononuclear cell from the patients were measured by using GPI-anchored placental alkaline phosphatase (PLAP) as substrate and Triton-X114 partitioning; the adhesion rate and CD24 expression of these cells were measured by MTT and immunohistochemical method respectively, when these cells were or were not treated by 1 mmol/L 1,10-phenanthroline for 5 hours. The results showed that the GPI-PLD activity of bone marrow mononuclear cells from the patients was significantly inhibited after being treated by 1 mmol/L 1, 10-phenanthroline for 5 hours [(42.08 +/- 7.21)% vs (5.4 +/- 2.96)%], while the adhesion rate and the expression of CD24 of these cells were increased [(49.78 +/- 26.73)% vs (61.19 +/- 29.14)%, (16.02 +/- 9.68)% vs (18.5 +/- 11.14)%, respectively)]. It is concluded that depression of GPI-PLD activity can increase the adhesion rate of bone marrow mononuclear cells from the patients while the CD24 expression is enhanced.
Adolescent
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Adult
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Aged
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Bone Marrow Cells
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drug effects
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metabolism
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pathology
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CD24 Antigen
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biosynthesis
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Cell Adhesion
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drug effects
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Cell Survival
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drug effects
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Child
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Female
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Humans
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Immunohistochemistry
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Leukemia, Myeloid
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blood
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Leukocytes, Mononuclear
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drug effects
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metabolism
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pathology
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Male
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Middle Aged
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Phenanthrolines
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pharmacology
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Phospholipase D
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blood
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metabolism
2.Expression of candidate tumor suppressor gene N-Myc downstream-regulated gene 2 in colon cancer.
Da-Ke CHU ; Jian ZHANG ; Hai SHI ; Guang-Long DONG ; Xin-Pin LIU ; Wei-Zhong WANG
Chinese Journal of Gastrointestinal Surgery 2008;11(4):354-357
OBJECTIVETo analyze the expression level of candidate tumor suppressor gene N-Myc downstream-regulated gene 2 (NDRG2) in human colon cancer.
METHODSThirty samples of colon cancer tissues with matched normal colon tissues were collected. The NDRG2 mRNA level was detected by semi-quantitive RT-PCR and the NDRG2 protein level was examined by Western blot and immunohistochemistry.
RESULTSTwelve samples of colon cancer tissues had low NDRG2 mRNA level and low protein level. The positive rates of NDRG2 in normal tissues and the tumorous colon tissues were 90.0%(27/30) and 53.3%(16/30) by immunohistochemistry respectively. There was a significant difference between two groups (P<0.05). The NDRG2 expression was not correlated with age, sex, metastasis of lymph node, depth of infiltration, as well as the Dukes staging(P>0.05), while it was correlated to the histology grading. The positive rate of NDRG2 in the well- and moderate-differentiation group was higher than that in the poor-differentiation group(P<0.05).
CONCLUSIONThe expression of NDRG2 is low in some colon cancer tissues, which indicates that the low level of NDRG2 expression may be engaged in the development of colon cancer.
Blotting, Western ; Colonic Neoplasms ; metabolism ; pathology ; Female ; Gene Expression Regulation, Neoplastic ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; RNA, Messenger ; genetics ; Reverse Transcriptase Polymerase Chain Reaction ; Tumor Suppressor Proteins ; genetics ; metabolism
4.Comparison of preoperative T staging by oral contrast enhanced ultrasonography and double contrast enhanced ultrasonography in advanced gastric carcinoma.
Rui-jie CHEN ; Pin-tong HUANG ; Yan-ping LI ; Zhi-qiang ZHENG ; Ya-ping ZHAO ; Fu-guang HUANG ; Nian-yu XUE ; Li WANG
Chinese Journal of Oncology 2010;32(7):551-554
OBJECTIVETo compare the accuracy of preoperative T staging of gastric cancer by oral and intravenous contrast-enhanced gastric ultrasonography.
METHODSOne hundred and forty three patients who had been diagnosed as gastric cancer by endoscopic biopsy and confirmed by pathology after operation were examined by oral and intravenous contrast-enhanced gastric ultrasonography, and they were divided into satisfied group and non-satisfied group according to the 2-D image quality of lesion. The results were compared with postoperative pathologic findings.
RESULTSAll the patients with gastric cancer presented regional gastric wall thickening. Among them, 117 cases were clearly presented with good image quality. The remaining 26 cases were presented with vague profile, the ulcerative surface of lesion was filled with hyperechogenicity combined with rear shadow. The accuracy of oral contrast-enhanced ultrasonography in determining the T stage of gastric cancer was 74.1%. The accuracy in satisfied group and non-satisfied group was 78.6% and 53.8%, respectively. The enhancement pattern of 143 cases was showed as hyperenhancement during the arterial phase and hypoenhancement during the portal phase in DCUS. The accuracy of double contrast-enhanced ultrasongraphy in determining the T stage of gastric cancer was 86.7%, but the accuracy in satisfied group and non-satisfied group was 88.9% and 76.9%, respectively. There was a significant difference between the two methods (χ(2) = 9.031, P < 0.01).
CONCLUSIONDCUS is more accurate than oral contrast-enhanced ultrasonography as a useful diagnostic method for preoperative T staging of gastric cancer.
Adult ; Aged ; Contrast Media ; Female ; Humans ; Male ; Middle Aged ; Neoplasm Staging ; methods ; Preoperative Period ; Stomach Neoplasms ; diagnostic imaging ; pathology ; Ultrasonography ; methods
5.Postoperative Regulatory T-Cells and Natural Killer Cells in Stage I Nonsmall Cell Lung Cancer Underwent Video-assisted Thoracoscopic Lobectomy or Thoracotomy.
Sai ZHANG ; Sai-Bo PAN ; Qing-Hua LYU ; Pin WU ; Guang-Ming QIN ; Qi WANG ; Zhong-Liang HE ; Xue-Ming HE ; Ming WU ; Gang CHEN
Chinese Medical Journal 2015;128(11):1502-1509
BACKGROUNDRegulatory T-cells (Treg) play key roles in suppressing cell-mediated immunity in cancer patients. Little is known about perioperative Treg fluctuations in nonsmall cell lung cancer (NSCLC). Video-assisted thoracoscopic (VATS) lobectomy, as a minimal invasive procedure for treating NSCLC, may have relatively less impact on the patient's immune system. This study aimed to observe perioperative dynamics of circulating Treg and natural killer (NK) cell levels in NSCLC patients who underwent major lobectomy by VATS or thoracotomy.
METHODSTotally, 98 consecutive patients with stage I NSCLC were recruited and assigned into VATS or thoracotomy groups. Peripheral blood samples were taken on 1-day prior to operation, postoperative days (PODs) 1, 3, 7, 30, and 90. Circulating Treg and NK cell counts were assayed by flow cytometry, defined as CD4 + CD25 + CD127 low cells in CD4 + lymphocytes and CD56 + 16 + CD3- cells within CD45 + leukocytes respectively. With SPSS software version 21.0 (SPSS Inc., USA), differences between VATS and thoracotomy groups were determined by one-way analysis of variance (ANOVA), and differences between preoperative baseline and PODs in each group were evaluated by one-way ANOVA Dunnett t-test.
RESULTSIn both groups, postoperative Treg percentages were lower than preoperative status. No statistical difference was found between VATS and thoracotomy groups on PODs 1, 3, 7, and 30. On POD 90, Treg percentage in VATS group was significantly lower than in thoracotomy group (5.26 ± 2.75 vs. 6.99 ± 3.60, P = 0.012). However, a higher level of NK was found on all PODs except on POD 90 in VATS group, comparing to thoracotomy group.
CONCLUSIONSLower Treg level on POD 90 and higher NK levels on PODs 1, 3, 7, 30 in VATS group might imply better preserved cell-mediated immune function in NSCLC patients, than those in thoracotomy group.
Aged ; Carcinoma, Non-Small-Cell Lung ; immunology ; surgery ; Female ; Flow Cytometry ; Humans ; Killer Cells, Natural ; immunology ; Male ; Middle Aged ; Postoperative Period ; T-Lymphocytes, Regulatory ; immunology ; Thoracic Surgery, Video-Assisted ; methods ; Thoracotomy ; methods
6.Best target position and range of lesion for magnetic resonance image -guided stereotactic cingulotomy
Xiang-Pin WEI ; Xian-Ming FU ; Ruo-Bing QIAN ; Chao-Shi NIU ; Ye-Han WANG ; Guang-Qing LI
Chinese Journal of Neuromedicine 2009;8(12):1231-1233
Objective To explore the best target position and range of lesion for magnetic resonance image (MRI)-guided stereotactic cingulotomy. Methods We retrospectively analyzed the data of 71 patients underwent MRI-guided stereotactic cingulotomy, including 7 with chronic pain and 64 with psychiatric disorders. The cingulate gyrus target chose were 5 mm as X, 10-20 mm posterior tip of the lateral ventricle as Y, 2 mm above the roof of the lateral ventricle as Z. The target position and range of lesion were determined and revised by routine sagittal, axial and coronal stereotactic MRI scans. Radiofrequency thermocoagulation lesions were produced by inserting an electrode (1.6 mm diameter and 4 mm uninsulated tip) and heating them at a temperature of 75℃ for 100 seconds with a volume of lesion reaching 15 mm×10 mm×10 mm. Early postoperative MR or CT scans and long-term followed up examination were available for all cases. Results Postoperative images showed that the lesions were all in the anterior cingulate gyrus. Two patients reported transient urinary incontinence without permanent complications; significant pain relief appeared in all patients with chronic pain; In 64 with intractable psychiatric disorders, cure was showed in 3 obvious improvements in 35, improvement in 22, and no change in 4. Conclusion MRI-guided stereotactic cingulotomy offers substantial advantages by allowing direct visualization of the cingulate gyrus and surrounding structures and the best range of lesion is 10-25 mm from the anterior point of the corpus callosum, 10 mm above the bottle of cingulate gyrus and 10 mm in width.
7.Forward genetic screening for zebrafish mutants defective in erythropoiesis.
Zhong-jun HUO ; Zong-hua WEN ; Jing LIN ; Kun WANG ; Zhi-bin HUANG ; Zhao-xia DAI ; Ning MA ; Guang YAN ; Ying-hua CHEN ; Xiao-hui CHEN ; Wei LIU ; Pin-yun MA ; Wei-hao LUO ; Ying ZHAO ; Shu FAN ; Jia-jia ZHAO ; Hong-hui HUANG ; Zi-long WEN ; Wen-qing ZHANG
Journal of Southern Medical University 2010;30(5):931-935
OBJECTIVETo screen and identify zebrafish mutants with erythropoiesis defects by N-ethyl-N-nitrosourea (ENU) mutagenesis and large-scale forward genetic screening using beta e 1 as the marker.
METHODSThe chemical mutagen ENU was used to treat healthy wild-type male fish (AB strain, F0). The surviving ENU-treated fish were mated with wild-type female fish to generate F1, and further F2 family was generated by F1 family intercross. The adult F2 fish were intercrossed within each F2 family and the resulting F3 embryos from each crossing were subjected to whole mount in situ hybridization (WISH) with the beta e 1 probe. Mutagenesis was performed by treating the male zebrafish with ENU to induce mutations in pre-meiotic germ cells to generate the founders, which were outcrossed to obtained the F1 fish. The F1 fish from different founders were mated to generate the F2 families. F3 embryos from the sibling cross in the F2 family were examined by whole mount in situ hybridization using beta e 1-globin probe. The putative mutants were then characterized with different hematopoiesis markers.
RESULTS AND CONCLUSIONWe identified 4 beta e 1-deficient mutants with erythropoiesis defects, including two with specific erythiod lineage defects and two with concurrent lymphopoiesis defects.
Animals ; Erythropoiesis ; genetics ; Ethylnitrosourea ; Female ; Gene Expression Regulation, Developmental ; Male ; Mutagenesis, Insertional ; Mutation ; Zebrafish ; genetics
8.Epidemiological characteristics of sexually transmitted diseases from 2005 to 2017 in Mengla County, Yunnan Province
Ming BAI ; Hui-ping LUO ; Pin-ci WANG ; Mei-shu LI ; Guang-xiang YI ; Rui-ping WANG ; Xi-hong LYU
Shanghai Journal of Preventive Medicine 2021;33(9):769-773
Objective:To determine the epidemiological characteristics and incidence trends of sexually transmitted diseases (STD) in Mengla County of Yunnan Province, and provide evidence for future prevention and control of STD. Methods:STD case information from 2005 to 2017 was extracted from the National Notifiable Infectious Disease Report Information System. Data were collected by year and disease type,and the incidence rate, epidemic characteristics and suspicious contact history of STD were statistically analyzed. Results:A total of 1 251 STD cases were reported in Mengla county from 2005 to 2017, including 490 gonorrhea, 483 syphilis, 216 condyloma acuminatum, 16 genital chlamydial infection and 46 genital herpes. The average annual incidence of STD was 35.57/100 000. The majority of STD cases were 20-29 years old (
9. Correlation of serum vitamin D, adipose tissue vitamin D receptor, and peroxisome proliferator-activated receptor γ in women with gestational diabetes mellitus
Hui-Yan WANG ; Guang-Tong SHE ; Li-Zhou SUN ; Hao LU ; Yin-Pin WANG ; Jun MIAO ; Ke-Zhuo LIU ; Cai-Feng SUN ; Hui-Hui JU
Chinese Medical Journal 2019;132(21):2612-2620
Background:
Gestational diabetes mellitus (GDM) is a common complication during pregnancy. Obesity and overweight are closely related to metabolic diseases and diabetes. However, the role of adipose tissue in the pathogenesis of GDM remains to be studied. The aim of this study was to investigate the correlation of vitamin D (VD) levels, VD receptor (VDR), and peroxisome proliferatoractivated receptor γ (PPARγ) expression with GDM in overweight or obese women.
Methods:
One hundred and forty pregnant women with full-term single-birth cesarean-section were selected as the study subjects and grouped (70 GDM women, including 35 non-overweight/non-obese women [group G1] and 35 women with overweight or obesity [group G2]; 70 pregnant women with normal glucose tolerance, including 35 non-overweight/non-obese women [group N1] and 35 overweight/obese women [group N2]). The levels of serum VD, blood biochemistry, and adiponectin were compared in these women. Subcutaneous adipose tissue was isolated from the abdominal wall incision. VDR and PPARγ messenger RNA (mRNA) transcript levels in these adipose tissues were quantified by real-time polymerase chain reaction. The differences between the levels of PPARγ protein and phosphorylated PPARγ Ser273 were detected by Western blotting.
Results:
The serum VD level of GDM women was lower in comparison to that of women with normal glucose tolerance (G1