Levels and Clinical Significances of sPD-1 and sPD-L1 in Peripheral Blood of Lymphoma Patients / 中国实验血液学杂志

OBJECTIVE@#To observe the levels of soluble programmed cell death protein 1 (sPD-1) and soluble programmed cell death ligand 1 (sPD-L1) in peripheral blood of lymphoma patients, and reveal their clinical significances.@*METHODS@#The peripheral blood specimens and clinical data of 64 newly diagnosed lymphoma patients and 30 healthy volunteers were collected. The levels of sPD-1 and sPD-L1 were detected by enzyme-linked immunosorbent assay (ELISA), and their correlations with clinical characteristics of the patients including pathological type, stage, lactate dehydrogenase (LDH) level, T cell subsets were analyzed.@*RESULTS@#The levels of both sPD-1 and sPD-L1 in peripheral blood of lymphoma patients were higher than those of normal controls (P <0.05). There were no significant differences in sPD-1 and sPD-L1 levels in peripheral blood between Hodgkin lymphoma and non-Hodgkin lymphoma patients. Different pathological subtypes of lymphoma had different levels of sPD-1. The level of sPD-1 in patients with T-cell lymphoma was higher than that in patients with B-cell lymphoma (P =0.001). The levels of both sPD-1 and sPD-L1 in patients with Ann Arbor stage III and IV were higher than those in patients with stage I and II (P <0.05). The level of sPD-L1 in patients with abnormally increased LDH was higher than that in patients with normal LDH (P =0.001), but there was no significant difference in sPD-1 level. T cell subset analysis showed that the level of sPD-L1 was negatively correlated to CD4+ T cell content (r =-0.265).@*CONCLUSION@#The levels of sPD-1 and sPD-L1 in peripheral blood of lymphoma patients are related to the pathological type, Ann Arbor stage, LDH content and T cell subsets, and will be potential biomarkers in predicting the prognosis of lymphoma.

Cloning and Expression Analysis of Squalene Epoxidase Gene in Poria cocos / 中国实验方剂学杂志

ObjectiveTo clone squalene epoxidase （SE）， a potential key rate-limiting enzyme involved in the synthesis pathway of Poria cocos triterpenes， from P. cocos and analyze for bioinformatics and expression. MethodThe total RNA was extracted by the kit and reverse-transcribed to cDNA. Specific primers were designed， and the cDNA was used as a template for cloning the SE gene， which was analyzed for bioinformatics. The expression of P. cocos qualene epoxidase（PcSE） was examined by Real-time polymerase chain reaction（Real-time PCR） in P. coco Shenzhou No. 10， Xiangjing 28， and 5.78 strains. ResultThe full length of PcSE is 1 571 bp， containing four exons and three introns. The obtained CDS sequence is 1 413 bp， encoding 470 amino acids. This protein is a hydrophobic protein with no signal peptide structure and has two transmembrane structural domains with a FAD/NAD （P） binding domain and SE structural domain localized to the mitochondrial membrane and the plasma membrane. The homologous sequence alignment with fungi of the Poriferae family is 80.92%， and the phylogenetic tree shows that PcSE protein is most closely related to P. cocos from the US. The results of Real-time PCR showed that the PcSE was expressed in all three strains， with the highest expression in 5.78 strain， and there was no significant difference in PcSE expression among the three strains. ConclusionFor the first time， the PcSE gene was cloned and analyzed from P. cocos， providing a basis for further research on the function of PcSE and the analysis of P. cocos triterpene biosynthesis pathway.

Mechanism of Yanghe Decoction against subcutaneous tumor in pulmonary metastasis from breast cancer through HIF-1α signaling pathway regulating glycolysis:based on network pharmacology and animal experiment / 中国中药杂志

This study aims to explore the mechanism of Yanghe Decoction(YHD) against subcutaneous tumor in pulmonary metastasis from breast cancer, which is expected to lay a basis for the treatment of breast carcinoma with YHD. The chemical components of medicinals in YHD, and the targets of the components were retrieved from Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP) and SwissTargetPrediction. The disease-related targets were searched from GeneCards and Online Mendelian Inheritance in Man(OMIM). Excel was employed to screen the common targets and plot the Venn diagram. The protein-protein interaction network was constructed. R language was used for Gene Ontology(GO) term enrichment and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment. A total of 53 female SPF Bablc/6 mice were randomized into normal group(same volume of normal saline, ig), model group(same volume of normal saline, ig), and low-dose and high-dose YHD groups(YHD, ig, 30 days), with 8 mice in normal group and 15 mice in each of the other groups. Body weight and tumor size was measured every day. Curves for body weight variation and growth of tumor in situ were plotted. In the end, the subcutaneous tumor sample was collected and observed based on hematoxylin and eosin(HE) staining. The mRNA and protein levels of hypoxia inducible factor-1α(HIF-1α), pyruvate kinase M2(PKM2), lactate dehydrogenase A(LDHA), and glucose transporter type 1(GLUT1) were detected by PCR and Western blot. A total of 213 active components of YHD and 185 targets against the disease were screened out. The hypothesis that YHD may regulate glycolysis through HIF-1α signaling pathway to intervene in breast cancer was proposed. Animal experiment confirmed that the mRNA and protein levels of HIF-1α, PKM2, LDHA, and GLUT1 in the high-and low-dose YHD groups were lower than those in the model group. YHD has certain inhibitory effect on subcutaneous tumor in pulmonary metastasis from breast cancer in the early stage, which may intervene pulmonary metastasis from breast cancer by regulating glycolysis through HIF-1α signaling pathway.

Variation of plantaris muscle: a case report with clinical significance / Variación del músculo plantar: reporte de un caso con significado clínico

SUMMARY: The plantaris muscle is located between the soleus and gastrocnemius muscles, within the posterior calf group. Due to degeneration and its loss of plantar-flexion function, the muscle is vestigial in human beings, but it retains clinical significance. Few cases of variation in the plantaris muscle have been reported, and this, therefore, appears to be rare. Nonetheless, absence of this muscle was identified via the dissection of a left lower limb (male), which also indicated the absence of an attachment in the usual position. The present report, which addresses such variation, may provide both inspiration and reference points for the clinical treatment of so-called "tennis leg", and for the use of plantaris muscle for the purposes of clinical, autologous graft repair.

RESUMEN: El músculo plantar se ubica entre los músculos sóleo y gastrocnemio, dentro del grupo posterior de la pierna. Debido a la degeneración y la pérdida de la función de flexión plantar, el músculo es un vestigio en los seres humanos, pero conserva su importancia clínica. Se han informado pocos casos de variación en el músculo plantar y, por lo tanto, esto parece ser raro. No obstante, se observó la ausencia de este músculo durante la disección de un miembro inferior izquierdo (masculino). El presente informe, que aborda dicha variación, puede proporcionar puntos de referencia para el tratamiento clínico de la llamada "pierna de tenista" y para el uso del músculo plantar con fines de reparación clínica con injerto autólogo.

Vasohibin-2 promotes proliferation and metastasis of cervical cancer cells by regulating epithelial-mesenchymal transition / 南方医科大学学报

OBJECTIVE@#To explore the role of vasohibin-2 (VASH2) in regulation of proliferation and metastasis of cervical cancer cells.@*METHODS@#We analyzed the differentially expressed genes between cervical cancer cells with flotillin-1 overexpression and knockdown by RNA-seq combined with analysis of public databases. The expression levels of VASH2 were examined in normal cervical epithelial cells (HcerEpic), cervical cancer cell lines (HeLa, C-33A, Ca ski, SiHa and MS751) and fresh cervical cancer tissues with different lymph node metastasis status. We further tested the effects of lentivirus-mediated overexpression and interference of VASH2 on proliferation, migration, invasion and lymphatic vessel formation of the cervical cancer cells and detected the expression levels of key epithelial-mesenchymal transition (EMT) markers and TGF-β mRNA.@*RESULTS@#RNA-seq and analysis of public databases showed that VASH2 expression was significantly upregulated in cervical cancer cells exogenously overexpressing flotillin-1 (P < 0.05) and downregulated in cells with flotillin-1 knockdown (P < 0.05), and was significantly higher in cervical cancer tissues with lymph node metastasis than in those without lymph node metastasis (P < 0.01). In cervical cancer cell lines Ca Ski, SiHa, and MS751 and cervical cancer tissue specimens with lymph node metastasis, VASH2 expression was also significantly upregulated as compared with HcerEpic cells and cervical cancer tissues without lymph node metastasis (P < 0.05). Exogenous overexpression of VASH2 significantly promoted proliferation, migration, invasion and lymphatic vessel formation of cervical cancer cells, whereas these abilities were significantly inhibited in cells with VASH2 knockdown (P < 0.05). The cervical cancer cells overexpressing VASH2 showed significant down- regulation of e-cadherin and up- regulation of N-cadherin, Vimentin and VEGF-C, while the reverse changes were detected in cells with VASH2 knockdown (P < 0.05). TGF-β mRNA expression was significantly up-regulated in cervical cancer cells overexpressing VASH2 and down-regulated in cells with VASH2 knockdown (P < 0.001).@*CONCLUSION@#Flotillin-1 may participate in TGF-β signaling pathway-mediated EMT through its down-stream target gene VASH2 to promote the proliferation, migration, invasion and lymphatic vessel formation of cervical cancer cells in vitro.

Relationship between TET2 Gene SNP rs3733609 C/T and JAK2V617F Allele Burden in Patients with Myeloproliferative Neoplasms / 中国实验血液学杂志

OBJECTIVE@#To investigate the relationship between the polymorphism of TET2 gene SNP rs3733609 and JAK2V617F allele burden in patients with myeloproliferative neoplasms (MPN).@*METHODS@#The exon 9 of TET2 gene was amplified by RT-PCR, and the nucleotide sequence of SNP rs3733609 site was analyzed by gene sequencing. The MGB Taqman probe PCR method was used to detect the JAK2V617F allele burden. The correlation of TET2 gene SNP rs3733609 C/T with the JAK2V617F allele burden and clinical parameters was analyzed.@*RESULTS@#TET2 gene rs3733609 C/T heterozygosity (normal T/T) could be detected in 19 cases of 85 cases of JAK2V617F positive MPN (22.4%) patients, while the TET2 gene rs3733609 C/T heterozygosity could be detected only in 9 of the 106 healthy volunteers, and the incidence was only 8.5% (9/106). Compared with the negative group (TET2 rs3733609 T/T), there was no significant difference in the median age, hemoglobin level and platelet count in the patients with TET2 gene SNP rs3733609 (CT/TC) positive, but the WBC count of peripheral blood and JAK2V617F allele burden significantly increased. In JAK2V617F high allele burden group, TET2 gene SNP rs3733609 was positive in 7 cases (36.8%, 7/19), the ratio was higher than that in the low allele burden group(18.2%, 12/66).@*CONCLUSION@#TET2 SNP rs3733609 C/T may be a new susceptible allelee, which affects the clinical characteristics and clonal evolution of MPN patients.

Effect of Qingguang'an on elastic fiber, MMP- 7, TlMP - 1 in scarring area of filtration canal after glaucoma surgery / 国际眼科杂志(Guoji Yanke Zazhi)

?AlM: To observe the effect of Qingguang'an on elastic fiber, MMP-7, TlMP-1 in scarring area of filtration canal after glaucoma surgery through the four Qingguang'an effective groups and Qingguang'an granules, to discuss and compare their mechanism of action on scarring area of filtration canal.?METHODS:Four effective components of Qingguang'an were used in groups D, E, F, G and H after glaucoma surgery, compared with group A ( blank ) , group B (model) and group C ( MMC) to observe the effect of elastic fiber, MMP-7, TlMP-1 in scarring filtration canal.?RESULTS:Compared with the preoperative basic lOP and 2d , 1, 2, 4wk postoperative lOP of groups C, E and H, the lOP of three group rose up slower than other groups, and kept the lowest data at 28d. There was significant difference compared with the rest of A, B, D, F, G groups (P0. 05). The difference was statistically significant among other groups (P<0. 01).?CONCLUSlON:The scarring area of filtration canal after glaucoma surgery is the major reason which lead to the failure of surgery. Qingguang'an effective group 2, Qingguang'an granules and MMC could reduced the scar tissue by restrained the elastic fiber, TlMP - 1 and increased the MMP-7. By observing the experimental results that both Qingguang'an effective group 2 and Qingguang'an granules could restrained the scarring area of filtration canal, the effects were unbiased, Qingguang'an granules group is better than effective group 2.

Effects of Shuangdanmingmu capsule on retinal vascular morphology and VEGF expression in rats with diabetic retinopathy / 国际眼科杂志(Guoji Yanke Zazhi)

Abstract?AlM: To observe the effects of Shuangdanmingmu capsule on VEGF expression and retinal vascular morphology in rats with diabetic retinopathy ( DR) .?METHODS: DR rats were fed with Shuangdanmingmu capsule. By comparing with the normal group, the model control group, and positive control group, the effect of Shuangdanmingmu capsule on retinal tissue of DR rats was observed under electron microscopy. After HE staining, retinal structure was observed under the light microscope. lmmunohitochemical staining was used to detect the VEGF expression in retina.?RESULTS:Two months after treatment, the layers tissue of retina presented mild edema, capillary pericytes performed edema, mitochondria showed mild swelling and less clear structure, some endothelial cells showed slight proliferation in Shuangdanmingmu group. Compared with the normal group, the expression level of VEGF in retina increased in the other groups, especially in model control group. A significant differential in expression of VEGF was found between Shuangdanmingmu group, positive control group and model control group (P<0. 01).? CONCLUSlON: Shuangdanmingmu capsule can effectively improve the retinal microvascular, reduce edema and necrosis of each layer of retina, improve the ultrastructure of retina's tissue and inhibit VEGF expression in DR rats.

Application on the thickness of nerve fiber layer of the optic disc in pathologic myopia eyes by OCT / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To analyze the application on frequency domain optical coherence tomography ( OCT ) technology of pathologic myopia optic disc neurosensory retinal thickness changes and its relationship with axis oculi, sex and age, and help for the early diagnosis of pathological myopia and primary open angle glaucoma. METHODS:Collected 96 eyes of normal eyes ( axis oculi 23-24mm) and 153 eyes of pathologic myopia eyes ( axis oculi 25-27mm 80 eyes, >27mm 73 eyes). We measured the thickness of nerve fiber layer of the optic disc by OCT and analyzed their relationship with axis oculi, sex and age with multiple linear regression analysis. RESULTS: The observation group showed significant smaller average thickness of peripapillary, superior, inferior, nasal than the control group ( P0. 05); The partial correlation coefficient of peripapillary average thickness of nerve fiber layer and axis oculi was -1. 31, gender was 5. 21, age was -0. 12. CONCLUSION:The thickness of nerve fiber layer of the optic disc in the pathologic myopia eyes are decreased than normal eyes, axis oculi, sex and age are influenced factors. The pathologic myopia patients should use different index combined with optic nerve fiber layer thickness decreased to help for the diagnosis of early primary open angle glaucoma.

Changes of nucleolin expression and cellular localization during HUVEC apoptosis induced by hydrogen peroxide / 中南大学学报(医学版)

OBJECTIVE@#To investigate the expression and cellular localization of nucleolin C23 during human umbilical vein endothelial cell (HUVEC) apoptosis induced by hydrogen peroxide (H(2)O(2)).@*METHODS@#Apoptosis of HUVEC was induced by exposure to 0.5 mmol/L H(2)O(2) for different periods and detected by flow cytometry and activity of caspase-3. The mRNA and protein expression of nucleolin were detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot, respectively. The intracellular distribution of nucleolin was observed by indirect immunofluorescence.@*RESULTS@#The percentage of apoptotic cells was increased significantly after treatment with H(2)O(2) for 12, 24 and 36 hours. The activity of caspase-3 reached the peak after treatment with H(2)O(2) for 4 h. RT-PCR showed that nucleolin C23 mRNA was decreased after 2, 4, and 8 hours treatment with H(2)O(2). Western blot showed that C23 protein level was decreased after 12 hours with an additional cleft band of 80 kD appeared after 8 hours. Density analysis showed that the 80 kD cleft band increased in a time-dependent manner. Immunofluorescence analysis demonstrated that H(2)O(2)-induced C23 redistribution from the nucleus to the cytoplasm.@*CONCLUSION@#H(2)O(2) could induce apoptosis accompanying with C23-cleavage and C23-translocation from the nucleus to the cytoplasm.

Preliminary study of diffusion tensor imaging in treatment response assessment of major depression / 南方医科大学学报

<p><b>OBJECTIVE</b>To assess the value of diffusion tensor imaging (DTI) in therapeutic effect evaluation of major depression.</p><p><b>METHODS</b>Eighteen patients who met the CCMD-3-R criteria for major depression or bipolar disorder (with depressed episode and total score no less than 18 for 17 items of Hamilton Depression Rating Scale) and 13 aged-matched controls were examined by routine magnetic resonance imaging (MRI) and DTI. DTI were used to determine fractional anisotropy (FA) in the preselected white matter regions. All the patients with major depression received treatment with selective serotonine reuptake inhibitor (SSRI) for 6-8 weeks, and the efficacy were assessed by Hamilton Depression Scale, Hamilton Anxiety Scale (HAMA), and Clinical Global Impression (CGI) scale.</p><p><b>RESULTS</b>The total response rate to fluoxetine was 67%, and significant improvement was observed in 56% of the patients while 33% failed to respond after 8 weeks of treatment. The depressed subjects failing to respond to the treatment had a significant lower FA of the frontal white matter than those responding favorably to the treatment and the healthy control subjects.</p><p><b>CONCLUSION</b>DTI may identify the microstructural abnormality in the white matter, which is associated with a low remission rate of major depression.</p>

Sequence polymorphism of the promoter region of gene STK11 in patients with Peutz-Jeghers syndrome / 中南大学学报(医学版)

OBJECTIVE@#To explore the relationship between the sequence variation of the promoter region (-1543 approximately -1160) of STK11 gene and the risk of developing Peutz-Jeghers syndrome (PJS).@*METHODS@#The sequences of the promoter region of 14 PJS patients (7 patients are inherited and the other 7 patients are sporadic) and 42 normal individuals were PCR amplified and then sequenced.@*RESULTS@#A new single nucleotide polymorphism (SNP) G/T (-1275) in STK11 promoter region was identified. The frequency of genotype GG, GT, and TT was 53.3%, 26.7%, and 20%, respectively among PJS patients and 33.3%, 64.3%, and 2.4%, respectively among the normal individuals. The frequency of genotype GG and TT among patients was significantly higher than that among the normal individuals, and the frequency of genotype GT among patients was significantly lower than that among the normal individuals (chi(2)=8.521, P<0.05).@*CONCLUSION@#G/T(-1275) in STK11 promoter region is a new SNP. The genotype of this new SNP may relate to the risk of developing Peutz-Jeghers syndrome (PJS) deserve further research.

Denaturant gradient gel electrophoresis in the genetic diagnosis of hereditary multiple exostoses / 中南大学学报(医学版)

OBJECTIVE@#To detect the mutations of EXT2 gene in hereditary multiple exostoses (HME) families and to investigate the sensitivity of denaturant gradient gel electrophoresis (DGGE) in screening the mutations in EXT2 gene.@*METHODS@#Five HME families and 3 sporadic patients were screened for the mutation detection in all exons of EXT2 gene covering the coding sequence and the flanking intronic sequence by DGGE, and DNA sequencing was performed for products with abnormal conformation.@*RESULTS@#Among these HME patients, we found 2 disease-causing mutations: A313T (nonsense mutation) and 319 insGT (frameshift mutation).@*CONCLUSION@#Two mutations of EXT2 gene are identified in the sample. DGGE can be an ideal choice for gene diagnoses of HME.

Genetic instability detected by flow cytometry: DNA aneuploid and P16 expression in biopsy specimens from lung cancer / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To investigate DNA aneuploid and P16 expression in biopsy specimens from lung cancer, and to study genetic instability and the application of flow cytometry in lung cancer pernicious degree diagnosis.</p><p><b>METHODS</b>Blood cells and cancer cells in biopsy specimens were marked simultaneously with anti-CD45 and anti-P16 fluorescent antibody, and the ratio of CD45+ P16+ cells and CD4- P16+ cells was compared. DNA content in biopsy specimens from lung cancer was detected by flow cytometry.</p><p><b>RESULTS</b>Among the 74 cases of lung cancer, there are 46 cases of DNA aneuploid (62.2%). Thirty-seven cases of lung cancer expressed P16 lowly (50%). Twelve cases of lung cancer only expressed P16 lowly (16.22%), 21 cases of lung cancer only expressed DNA aneuploid (28.38%), and 25 cases not only expressed P16 lowly but also expressed DNA aneuploid (33.78%). Indexes of malign degree, such as P16 low expression or DNA aneuploid could be detected in 58 cases among the 74 cases (78.38%) by flow cytometry.</p><p><b>CONCLUSION</b>P16 low expression and DNA aneuploid are the indexes of lung cancer malign degree, and flow cytometry can be used to study genetic instability and evaluate biopsy specimens from lung cancer.</p>

Study of the neuropsychology and aural event related evoked potential on patients with the infarction in basal ganglia region / 中国应用生理学杂志

<p><b>AIM</b>To learn the condition of the memory and the visual space of the patient who has suffered from the infarction in basal ganglia region, and to analyze its impact on and the characteristics of the patients' cognition.</p><p><b>METHODS</b>By testing respectively on 21 subjects who were initially infarcted in basal ganglia with single focus on one side, and 21 healthy volunteers with corresponding age, gender and educational background with Rey-Osterrieth Complex Figure Scale (Rey), Clinical Memory Scale (CMS), Hospital Anxiety-Depression Scale (HAD), National Institute of Health Stroke Scale (NIHSS), Oxford Handicap Scale (OHS), Barthel Index (BI), and Aural Event Related Evoked Potential (AERP) as well.</p><p><b>RESULTS</b>Compared with the control group, the patient group got higher scores of anxiety and depression in HAD), which showed absolutely statistical significance; they demonstrated longer reaction time in AERP, which also showed statistical significance; and in CMS. they displayed inferior performance in the free picture recall and the memory quotient (MQ), which again had statistical significance. However, compared with the control group, the patient group got scores with no significance in copy, immediate recall and delayed recall in Rey.</p><p><b>CONCLUSION</b>The infarction in basal ganglia region with single focus on one side may impact on the patient's executive function, memory function and emotion. But no impact is showed on patient's visual space function.</p>

Changes in androgen receptor protein and mRNA expressions in intracardiac ganglia of orchidectomized rats / 中国组织工程研究

BACKGROUND:Most foreign and domestic studies on the effect of androgen receptor(AR) on cardiovascular system are limited to myocardium.However,cardiac nervous system plays an important role in the cardiac functional regulation.OBJECFIVE:To observe the AR protein and mRNA expressions in intracardiac ganglia of male orchidectomized rats,to investigate whether androgen affects the expressions,and to make a comparison with normal rats and testosterone-substituted rats after orchiectomy.DESIGN:A randomized controlled experiment.SETTING:Department of Anatomy,Medical College,Wuhan University of Science and Technology;Department of Anatomy,Tongji Medical College,Huazhong University of Science and Technology.MATERIALS:This study was carried out in the Department of Anatomy,Medical College,Wuhan University of Science and Technology between January and May 2003.Sixty healthy adult male Wistar rats,with body mass of 150 to 250g,were provided by the Animal Experimental Center,Tongji Medical College,Huazhong University of Science and Technology.METHODS:Sixty rats were randomized into 3 groups:①Control group,in which,testicles of rats were untouched.②Orchiectomy group,in which,bilateral testicles of rats were dissected.③Testosterone group,in which,the orchidectomized rats were injected with testosterone,0.2 mg once,once every 3 days,3 weeks totally.AR protein and its mRNA expressions in intracardiac ganglia of male orchidectomized rats were detected by immunohistochemical method and in situ hybridization method.MAIN OUTCOME MEASURES:The positive rate of AR-positive cells in intracardiac ganglia (the number of positive cells/the number of total cells×100%)and its mean absorbance.RESULTS:All the 60 rats were involved in the final analysis.AR-positive nerve cells were found in all the intracardiac ganglia of atrial posterior wall in the 3 groups;The positive rate of AR protein and mRNA positive nerve cells in intracardiac ganglia and its mean absorbance were significantly lower in the orchiectomy group than in the control group and in the testosterone group (P＜0.05).But no obvious differences in the positive rate and mean absorbance existed between testosterone group and control group(P＞0.05).CONCLUSION:AR exists in the intracardiac ganglia of atrial posterior wall,and it is regulated by androgen.

The expression of mutation p53 gene from circulating cancer cells of peripheral blood and the clinical significance in detecting the patients with colorectal cancer / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To study the clinical significance of detecting p53 gene mutation expression in colorectal cancer cells of peripheral blood.</p><p><b>METHODS</b>Flow cytometry (FCM) was used to detect p53 gene mutation expression in peripheral blood cancer cells of 128 patients with colorectal cancer. Experimental data were analyzed by SPSS (v.11.0) software.</p><p><b>RESULTS</b>The lymph node metastasis showed the significant difference statistically (P<0.01) between p53 positive and negative expression in the colorectal cancer patients. The mutation p53 expression associated with existing histological differentiation (r=0.8476, P<0.05). A lymph node metastasis difference was observed between left and right colorectal cancers of mutation p53 positive expression.</p><p><b>CONCLUSION</b>Detecting the mutation p53 expression in cancer cells of peripheral blood might be helpful to the early diagnosis of colorectal cancer.</p>

Hotspot of the mutations of keratin 9 gene in a diffuse palmoplantar keratoderma family / 中南大学学报(医学版)

OBJECTIVE@#To identify the gene causing diffuse palmoplantar keratoderma in a Chinese pedigree.@*METHODS@#Four normal individuals and 3 patients in a diffuse palmoplantar keratoderma family and 10 unrelated control samples were recruited. The hotspot of the mutations of keratin 9 gene was analyzed by polymerase chain reaction and direct sequencing.@*RESULTS@#We found a G485A transition in ke ratin 9 gene, resulting in the substitution of glutamine for arginine at codon 162 in this diffuse palmoplantar keratoderma family. The mutation was not found in the 10 unrelated control samples and 4 normal individuals.@*CONCLUSION@#The mutation G485A found in keratin 9 gene is the disease-causing mutation in the diffuse palmoplantar keratoderma family.

Study on the relationship between genetic polymorphism Val384Asp in hMLH1 gene and the risk of four different carcinomas / 中华流行病学杂志

<p><b>OBJECTIVE</b>To investigate the association of genetic polymorphism Val384Asp in hMLH1 gene with the risk of colorectal, gastric, esophageal and breast carcinomas.</p><p><b>METHODS</b>A case-control study was taken to investigate the role of Val384Asp in hMLH1 gene in developing these four carcinomas. 233 colorectal, 273 gastric, 90 esophageal and 111 breast cancer patients were included, as well as 268 healthy individual served as controls. Peripheral white blood cell DNA was obtained from all subjects. hMLH1 gene Val384Asp was analysed using a PCR-based DHPLC while the existence of Val384Asp were verified by DNA sequencing.</p><p><b>RESULTS</b>6.34% of the healthy individuals were identified as Val384Asp carriers and significant differences existing between colorectal cancer patients or gastric cancer patients and controls, especially between young aged patients and controls.</p><p><b>CONCLUSION</b>Determination of Val384Asp in hMLH1 gene single nucleotide polymorphism seemed to be suitable for identifying individuals with increased risk of gastrointestinal cancer in the Chinese population.</p>

The coexistence of estrogen receptor and interleukin-6 in the intra-cardiac ganglia of rats / 中国免疫学杂志

Objective:To investigate the expression of estrogen receptor(ER) and interleukin-6(IL-6) in the intra-cardiac ganglia of rats and to identify the coexistence of these two proteins in the intra-cardiac ganglia.Methods:The double labeling techniques of immunocytochemical staining were conducted in the study.Results:There were three immunoreactively-labeled neurons in the ganglia.The ER-staining was showed brown in color,locating in the nucleus;IL-6 staining was showed red in color,locating in the cytoplasm;there were ER/ IL-6 double-labeled cells in same section,which accounted for about 20% to 30 %of the total single and double labeled neurons.Conclusion:ER and IL-6 can coexist in same rat intra-cardiac ganglia cells.Therefore,it provides morphological evidence for the theory about immune-neuro-endocrine network at the cellular level.