Objective To explore the prognostic significance in monitoring minimal residual disease (MRD) in childhood acute lymphoblastic leukemia (ALL) by a simple method,and to detect cloned immunoglobulin H (IgH) and T cell receptor γ (TCRγ) gene rearrangements by using multiplex polymerase chain reaction (PCR) and automated fragment analysis.Methods Bone marrow samples were collected from 86 newly diagnosed cases of childhood ALL at the Department of Pediatrics,the First Affiliated Hospital of Sun Yat-Sen University,from May of 2009 to August of 2013.IgH and TCRγ gene rearrangements were amplified by qualitative multiplex PCR.The clonality of PCR production was analyzed by GENEMAPPERID software.Only those carried monoclonal IgH/TCRγ on diagnosis were arranged to monitor MRD.Detectable monoclonal IgH/TCRγby the end of induction was defined as MRD positive.All patients were treated with GD2008 ALL protocol.Clinical data of all newly-diagnosed ALL patients in the corresponding period were reviewed.The final follow-up on May 31,2014.Survival rates and event free survival (EFS) curves were estimated by the Kaplan-Meier,and compared by using the log-rank test.Results The percent age of 94.2 (81/86 cases) patients was at least 1 marker positive.Subsequent MRD was monitored in 79 cases.The median follow-up time was 20 months (9-61 months).By the end of induction,20 cases were MRD positive and 59 cases were M RD negative,and the 3-year EFS were 56.4％ ± 14.7％ and 94.0％ ± 3.4％ (x2 =8.563,P =0.003),respectively.According to the traditional prognostic stratification criteria,MRD was detected 65 cases in the non-high risk group:23 cases in standard risk group and 42 cases in intermediate risk group,and the difference of 3-year EFS had no statistical significance (95.3％ ±4.7％ vs 76.6％ ±9.0％,x2 =0.934,P =0.334).While using MRD by the end of induction as a risk stratification criterion,there was a statistical significant difference compared with the 3-year EFS for MRD-negative (n =52) group and MRD-positive (n =13) group (93.1％ ± 3.8％ and 59.5％ ± 16.2％,x2 =7.128,P =0.008).Conclusions It is a simple but feasible method to monitor MRD in childhood ALL by using this qualitative multiplex PCR with automated fragment analysis for monoclonal IgH/TCRγ gene rearrangements.MRD by the end of induction can be used as a more accurate risk stratification criterion than the traditional one.It is worth of further research.

Object To develop a method for the determination of scutellarin in Erigeron breviscapus (Vant.) Hand. -Mazz. and its extract (dengzhanhuasu) by capillary electrophoresis. Methods Separation was carried out in an uncoated fused silica capillary 57 cm ?50 ?m (ID). Meanwhile, a running voltage 20 kV, 40 mmol/L borax (pH 8.50 with H 3PO 4) buffer and a UV detector at 280 nm were adopted. Results The calibration curve showed good linearity over the range of 0.1-4.0 mg/mL (r=0.998 5). The average recovery was higher than 98.0%. Conclusion The method is proved to be simple, rapid and accurate, and can be used for quality control of E. breviscapus and its extract (dengzhanhuasu).

AIM:To investigate the potential of differentiatng into myocytes of the granulocyte colony-stimulating factor(G-CSF)-mobilized CD34 + cells. METHODS: Three hours after intraperitoneal injecction of isoprenaline(ISO) to develop acute ischemic model, rats' bone marrow hematopoietic stem cells were mobilized to the site of myocardial infarction by G-CSF. The techniques of immunohistochemisty and HE stain were used to detect the infiltration of CD34 + cells and the regeneration of myocytes in the infarct zones. RESULTS: 24 hours after administration of ISO , a large amount of infiltrative monocytes and regenerative myocytes which were CD34 positive expression could be found in the infarct zones of the G-CSF treatment group, while majority of the infiltrative inflammatory cells in control group were neutrophils and there was no infiltrative cells and myocytes which were CD34 positive expressio, 2 weeks after administration of ISO, there were a plenty of scar in control group, but not in the G-CSF treatment group. CONCLUSION: G-CSF-mobilized CD34 + cells possess the potential to differentiate into myocytes and it may be used in treating acute myocardial infarction.

Objective To evaluate the effects of diagnostic and treatment manipulation of the urinary diseases on serum prostate specific antigen(PSA) levels .Methods 80 male patients were recruited from urology surgery department of Shenzhen Tranditional Chinese Medicine (TCM ) Hospital ,Which included 13 cases with digital rectal examination (DRE) ,10 cases with catheterization , 12 cases with rigid cystoscopy ,17 cases with prostate biopsy ,28 cases with transurethral resection of the prostate (TURP) .Blood samples of 80 patients were collected before diagnostic and treatment manipulation of the urinary diseases and 24 h ,3 d ,7 d ,14 d af‐ter that ,respectively .Then ,serum total prostate antigen(TPSA) and free prostate antigen (FPSA) was measured .Results There was no effects of DRE on serum TPSA and FPSA levels(P>0 .05) .On the contrary ,serum TPSA and FPSA levels increased sig‐nificantly in patients with catheterization and cystoscopy(P<0 .05) ,and the duration was longer(7-14 d) .Serum TPSA and FPSA levels increased significantly(P<0 .05)in patients with TURP and biopsy at the 24th hour after manipulation and it began to de‐crease on the third day .Also ,the serum TPSA and FPSA levels decreased to baseline after 14 days .Conclusion There′re no effects of DRE on serum TPSA and FPSA levels .However ,serum TPSA and FPSA levels increase differently in patients with catheteriza‐tion ,cystoscopy ,biopsy and TURP ,but the durations were different ,too .

ObjectiveTo investigate the role of platelet-derived growth factor(PDGF) and its receptor in the development of hypertrophic scar. MethodsThe expression of PDGF and its receptor were detected in biopsy specimens of 9 pieces of normal skin, 7 pieces of granulation tissue of burn wound and 34 pieces of hypertrophic scar by immunohistochemical staining using specific polyclonal antibodies.ResultsPDGF and its receptor markedly increased in granulation tissue and hypertrophic scars, reaching the peak in the hypertrophic scars within 6 months and then decreased after the peak, whereas PDGF and its receptor expressed weakly in only a few normal skin specimens, and the differences were significant(P<0.05).ConclusionsThe increasing expression of PDGF and its receptor may be related to the development of hypertrophic scar.

OBJECTIVE: Tried to find the relationship between tinnitus and each testing method, provided information for objective diagnosis and treatment for tinnitus patients with sensorineural hearing loss. METHOD: The characteristics of audiology tests, including pure tone audiometric, acoustic immittance, middle ear muscle reflexes, matching test, distortion products otoacoustic emission(DPOAE) were compared in 79 ears of 69 tinnitus patients with sensorineural hearing loss. RESULT: The RI positive rate was higher in Convergence curve in tinnitus patients of sensorineural hearing loss, with the rate being 51.3%. The detection rates of DPOAE were 15.2% in patients of sensorineural hearing loss tinnitus groups, which were significant lower than those in control group. CONCLUSION Psychoacoustic techniques can produce a useful amount of clinical data regarding tinnitus in different aspects, these data can help clinicians design needed based managements. DPOAE test is helpful for the diagnosis of lesions in some tinnitus patients.
Audiometry, Pure-Tone ; Hearing Loss, Sensorineural ; complications ; physiopathology ; Hearing Tests ; methods ; Humans ; Otoacoustic Emissions, Spontaneous ; Psychoacoustics ; Tinnitus ; complications ; physiopathology

To investigate the expression and significance of CD28 and CTLA4 on T cells in bone marrow of aplastic anemia (AA) mice, in vitro bone marrow mononuclear cells (BMMNCs) were activated through being incubated with PHA (15μg/mL). The expression of CD28 and CTLA4 on T cells incubated with or without PHA was detected by two-color flow cytometry. The expression of CD28 and CTLA4 was significantly increased after PHA stimulation. In the AA mice, the expression of CD28 with or without PHA stimulation was both higher than that in the normal mice (both P＜0.01), but the expression of CTLA4 with or without PHA stimulation showed no significant difference in comparison to that in the normal mice (both P＞0.05). In the AA mice, there were more activation and activated potential of T cells than the normal, and the abnormal expression of CD28 and CTLA4 may participate in immunological disorder mediated by T cells.

BACKGROUND:Low to moderate intensity aerobic exercise can help protect knee cartilage.Long-chain non-coding RNAs are crucial for gene regulation.Among them,HOTAIR can activate numerous transcriptional co-repressors to repress the activation of certain genes. OBJECTIVE:To detect the expression levels of HOX transcript antisense RNA(HOTAIR)and other related factors in chondrocytes of high fat-fed mice and after low to moderate intensity exercise intervention,and to investigate their role in cartilage injury and sports rehabilitation. METHODS:Thirty C57BL/6 male mice were randomly divided into control group(normal feeding),high fat feeding group and high fat feeding plus treadmill exercise group,with 10 mice in each group.The mice in the high fat feeding plus treadmill exercise group were subjected to an 8-week low to middle intensity treadmill exercise,and the mice in the other two groups were caged.During this period,body mass was weighed every week on Sunday.After the 8-week exercise,both lower extremities of mice were taken,and the knee joint was scanned using Micro CT to make a 3D femoral condyle image to obtain relevant parameters.Hematoxylin-eosin and safranin O-fast green staining of the knee joint were performed for Mankin and Osteoarthritis Research Society International(OARSI)scoring.RT-PCR was performed to detect the mRNA levels of cartilage metabolic indicators and lipid metabolism indicators,including type II collagen,matrix metalloproteinase 13,interleukin 1,low-density lipoprotein receptor-related protein 5,HOTAIR and its downstream factor lysine specific demethylase 1. RESULTS AND CONCLUSION:The body mass of high fat-fed mice were higher than that of the control group(P<0.01),and the body mass of the high fat feeding plus treadmill exercise group was lower than that of the high fat feeding group(P<0.05).The connectivity density of high fat-fed mice was higher than that of the control group(P<0.01).Mankin and OARSI scores of the high fat feeding were higher than those of the control group(P<0.01)and high fat feeding plus treadmill exercise group(P<0.05).The mRNA level of type II collagen was higher in the control group than the high fat feeding plus treadmill exercise group(P<0.05)and high fat feeding group(P<0.01)as well as higher in the high fat feeding plus treadmill exercise group than the high fat feeding group(P<0.01).The mRNA levels of matrix metalloproteinase 13,interleukin 1,low-density lipoprotein receptor-related protein 5,HOTAIR and lysine specific demethylase 1 were higher in the high fat feed group than the control group and high fat feeding plus treadmill exercise group(P<0.01).To conclude,high fat feeding can increase the bone substance of the femoral condyle,lead to knee cartilage wear,and cause chondrocyte metabolism disorder.HOTAIR is highly expressed in this process.An 8-week low to middle intensity treadmill exercise can reduce body mass,alleviate knee cartilage wear,improve chondrocyte function and down-regulate HOTAIR expression in mice.

The effects of ligustrazine on the expression of LFA-1, ICAM-1 in bone marrow tissue and the mechanism promoting hematopoietic reconstitution following bone marrow transplantation (BMT) were investigated. The 150 mice were randomly divided into 3 groups: normal group, saline group and ligustrazine group. The normal group received no treatment, while in the saline group and ligustrazine group, the mice were subjected to normal saline (0.2 ml, twice a day) and ligustrazine (0.2 ml, twice a day) respectively through a gastric tube. At the 7th, 14th, 21st and 28th day after BMT, survival rate, colony forming unit of spleen (CFU-S), peripheral blood cells and bone marrow mononuclear cells (BMMNC) were measured, histological changes in bone marrow tissue were observed and the expression level of LFA-1, ICAM-1 was detected. In ligustrazine group CFU-S counts on the 10th day and the peripheral blood WBC, PLT, BMMNC counts, hematopoietic tissue volume as well as the expression level of LFA-1 on the 7th, 14th, 21st, 28th day after BMT were higher than in saline group (P<0.01 or P<0.05). Mature RBC volume and the expression level of ICAM-1 were significantly lower in the ligustrazine group than in the saline group (P<0.01 or P<0.05). In the ligustrazine group, fat tissue volume was higher on the 7th, 14th day after BMT (P<0.01) and was lower on the 21st, 28th day (P<0.01) after BMT than in the saline group. It was concluded that Ligustrazine could improve bone marrow microenvironment and promote hematopoietic reconstitution.
Animals ; Bone Marrow Transplantation ; Female ; Hematopoiesis ; drug effects ; Hematopoietic Stem Cells ; drug effects ; metabolism ; Intercellular Adhesion Molecule-1 ; biosynthesis ; genetics ; Lymphocyte Function-Associated Antigen-1 ; biosynthesis ; genetics ; Male ; Mice ; Mice, Inbred BALB C ; Pyrazines ; pharmacology ; Random Allocation

Objective:To investigate the effect of scar uterus on assisted reproduction treatment strategy.Methods:From January 1, 2017 to December 31, 2017, 109 cases of scar uterus group and 63 cases of vaginal delivery history group who underwent in vitro fertilization-embryo transfer (IVF-ET) assisted pregnancy fresh embryo transfer in our hospital were retrospectively analyzed. Results:⑴ There was no significant difference in the total amount of gonadotropin (Gn) and the total days of GN in patients <35 between scar uterus group and the vaginal delivery history group ( P>0.05), but there were significant differences in the number of oocytes, mature oocytes, two pronucleus (2PN) and excellent embryos between the scar uterus group and the vaginal delivery history group ( P<0.05). When the age was ≥35 years old, there was no significant difference in the total number of GN, the total days of GN, the number of oocytes obtained, the number of mature oocytes, the number of 2PN and the number of excellent embryos between the two groups ( P>0.05). ⑵ There were no statistically significant differences in clinical pregnancy rate and embryo implantation rate between the two groups of patients < 35 years old, no matter single embryo transplantation or double embryos transplantation. When transplant two embryos, the clinical pregnancy rate and embryo implantation rate in the scar uterus group were slightly lower than those in the vaginal delivery history group (57.57% vs 71.05% and 39.39% vs 47.37%, respectively), but with no significant difference ( P>0.05). There were no statistically significant differences in the clinical pregnancy rate and embryo implantation rate between single embryo transplantation and double embryo transplantation in patients≥35 years old ( P>0.05). ⑶ There were no statistically differences in biochemical pregnancy rate, early abortion rate, preterm birth rate and average newborn weight between the scar uterus group and the vaginal delivery history group ( P>0.05). Conclusions:Cesarean section may affect the ovarian function. For patients with previous cesarean section, early evaluation of ovarian function is recommended. Single embryo transfer does not reduce the outcome in IVF-ET. It is recommended to perform single embryo transfer for patients with scar uterus to reduce the risk during pregnancy of twin pregnancy.