Objective To investigate the clinical significance of peripheral blood parameters including immature reticulocyte fraction (IRF) in monitoring the hematopoietic recovery of patients with acute myeloid leukemia aftcr receiving consolidation chemotherapy with high dose cytarabine (HDAC).Methods The peripheral blood parameters,including absolute neutrophil (ANC) and platelet (Plt) counts as well as IRF,were measured by Sysmex XE-2100 automated hematology analyzer before and after consolidation chemotherapy with HDAC in 30 patients with acute myeloid leukemia.These peripheral blood parameters were further statistically analyzed and compared.Results Following consolidation chemotherapy,the median time to recovery for ANC,Plt and IRF was (9.2±2.5) days,(11.3±3.7) days and (5.0±2.6) days,respectively.In comparison with ANC and Plt recovery,IRF showed significantly early recovery (P ＜ 0.05).Additionally,ANC raised preceding Plt recovery (P ＜ 0.05).However,the median recovery time of ANC,Plt and IRF showed little difference among these patients further subgrouped according to FAB and risk based classification (P ＞ 0.05).Conclusion IRF is an early indicator for the hematopoietic recovery of patients with acute myeloid leukemia following consolidation chemotherapy with HDAC,which could provide important clinical information to evaluate therapeutic efficacy.

A three-dimensional (3D) transrectal ultrasound (TRUS) imaging system is presented in this paper. The 3D imaging system is used for diagnosing diseases of prostate. The 3D image is reconstructed by a series of two-dimensional image data which is obtained through rectum. It can be a guide to prostate needle biopsies. The system is built by two parts: hardware and software. In the hardware, the mechanical device, stepper motor, control circuit, B Mode TRUS and personal computer (PC) workshop are presented. The software includes the firmware of micro control unit and software of the PC workshop. In order to evaluate the performance of the 3D imaging system, we did experiments with water and agar phantoms, and the results demonstrated the system's ability of 3D imaging with high-precision.
Biopsy, Needle ; Humans ; Imaging, Three-Dimensional ; instrumentation ; Male ; Phantoms, Imaging ; Prostate ; diagnostic imaging ; Rectum ; Software ; Ultrasonography

Objective To evaluate the clinical efficacy and toxicity of EPOCH regimen in the treatment of elderly patients with peripheral T-cell lymphoma. Methods Twenty-eight elderly patients with pathologically diagnosed peripheral T-cell lymphoma were treated with EPOCH regimen, including 96-hour continuous infusion of etoposide 50 mg/m2, epirubincin 12 mg/m2 and vincristin 0.4 mg/m2 on daysl through 4,cyclophosphamide 750 mg/m2 given as intravenous bolus on day 5 and prednisone 60 mg/m2 administered orally on daysl through 5. The EPOCH regimen was repeated very 21 days. Clinical efficacy and safety profiles of EPOCH regimen was systemically reviewed and analysed. Results All the 28 patients received a total of 85 cycles of EPOCH regimen. The median cycles was two courses. Fifteen patients achieved complete response, while five cases obtaining partial response. The overall response rate was 71.4 %. The median survival time was 20 months. In newly diagnosed patients, complete response rate (CR) as well as partial response (PR) and overall response rate (OR) reached 64.7 %, 23.5 % and 88.2 %, respectively, which was significantly higher than that in refractory cases, whose CR, PR and OR were 36.4 %, 9.1% and 45.5 %(λ 2 = 5.99, P ＜0.05). In addition, the median survivalduration of newly diagnosed patients was longer than that of refractory cases, whose median survival time was 24 and 13 months, respectively. The major adverse events was myelosuppression with grade 3-4 neutropenia and thrombocytopenia in 53.6 % and 50.0 % cases.Non-hematologic toxicities were moderate and uncommon. The frequency of adverse effects in de novo patients showed little difference in comparison with that in refractory ones (P＞0.05). Conclusion EPOCH regimen was an effective and well tolerated therapeutic schedule for elderly patients with peripheral T-cell lymphoma.

Objective To investigate the response of multiple myeloma (MM) cells to 8-chloroadenosine 3',5'-monophosphate (8-Cl-cAMP) and the impact of arsenic trioxide (As2O3) on the above reaction.Methods MM-derived cell lines RPMI8226 and U266 were used as in vitro models.Cell apoptosis was evaluated according to cellular morphology and DNA content measured by flow cytometry.Meanwhile,rhodamine 123 (Rh123) staining and flow cytometry assay were used to detect the changes of mitochondrial transmembrane potentials (△ψm) in MM cells before and after the treatment.The synergic effects of 8-Cl-cAMP and As2O3 were evaluated by King' s formula.Results The 8-Cl-cAMP could induce growth inhibition of RPMI8226 and U266 cells in dose and time-related manners.The 8-Cl-cAMP could trigger apoptosis and △ψm collapse in MM cells through cellular morphology and flow cytometry analysis.As2O3 accelerated 8-Cl-cAMP-mediated apoptosis of RPMI8226 cells,but there were few synergic effects observed.Conclusion 8-Cl-cAMP could induce cell proliferation inhibition and apoptosis in MM cells.Mitochondria may be one of targets in 8-Cl-cAMP-mediated apoptosis.Furthermore,As2O3 catalyzes 8-Cl-cAMP-induced apoptosis.

10.3969/j.issn.1007-3969.2013.04.010

AIM　To investigate the structures and immunomodulation activity of four homogeneous polysaccharides: LBP 1a-1, LBP 1a-2, LBP 3a-1 and LBP 3a-2 isolated from Lycium barbarum L. brought from Zhongning County, Ningxia Province. METHODS　Their molecular weights, sugar component (constituents) and their linkages were determined by gel permeation chromatography, acid hydrolysis, periodate oxidation and NMR spectrum. The activity of immunomodulation was evaluated with splenocyte proliferation by ［3H］-TDR incorperation, in vitro. RESULTS　Four polysaccharides with molecular weights 11.5×104, 9.4×104, 10.3×104 and 8.2×104, were shown to enhance splenocyte proliferation induced by ConA. LBP 1a-1 and LBP 1a-2 were α-(1→6)-D-glucans. LBP 3a-1 and LBP 3a-2 were found to be α-(1→4)-D-polygalacturonans. CONCLUSION　The four polysaccharides were first isolated from this plant. Polysaccharides with main chain of α-(1→4)-D-polygalacturonans showed stronger immunomodulation activity.

A new scanning mode is proposed that the front-end of the probe is fixed, while the back-end makes fan-shaped, scanning movement. The new scanning mode avoided ribs drawbacks successfully. Based on the new scanning mode a 3D-Ultrasound Images System is accomplished to acquire 2D data of fetusfetus fetusfetus phantom and livers and kidneys, to demonstrates the effectiveness of the new scanning mode.
Fetus ; Humans ; Imaging, Three-Dimensional ; Kidney ; Liver ; Phantoms, Imaging ; Ultrasonics ; instrumentation ; methods

Object To isolate the immunoactive polysaccharide from Astragalus mongholicus Bunge and elucidate its chemical structure Methods The polysaccharide was purified from water extracts of A mongholicus by ethanol precipitation, deproteination, selective precipitation with hexadecyltri methylammonium bromide, ion exchange and gel filtration chromatography Its homogeneity and molecular weight were estimated by gel filtration chromatography, the structure was deduced from sugar analysis, methylation analysis, Smith degradation, IR and 13 CNMR spectrophotometry Results A homogeneous polysaccharide A2Nb was obtained with a molecular mass of 360 000 , and composed of D glucose with a major linkage form of ? D (1→4) glucose Side chains were found at 6 O positions once in every 25 glucose residues Conclusion A high molecular weight glucan A2Nb was obtained from A mongholicus for the first time It showed the ability of promoting the proliferation of the splenocytes of mice

Objective:To investigate the clinical characteristics and outcome of novel coronavirus pneumonia (COVID-19)patients with different body mass index (BMI), and to provide the basis for disease assessment and prognosis.Methods:The clinical data of 541 patients with COVID-19 diagnosed in Xiaogan Hospital Affiliated to Wuhan University of Science and Technology from January 16 to March 28, 2020 were collected. The patients were divided into normal weight group, overweight group, and obesity group according to BMI. The clinical characteristics and outcomes of the three groups were compared. The correlation between BMI and clinical classification was analyzed by ordinal logistic regression.Results:There were 288 cases (53.23%) in normal weight group, 193 cases (35.67%) in overweight group, and 60 cases (11.09%) in obesity group. Compared with normal weight group, overweight and obesity groups displayed higher proportion of hypertension, with increased levels of white blood cells, neutrophils, C reactive protein, aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, and triglyceride in laboratory test results, and higher proportion of severe and critical illness ( P<0.05 or P<0.01). After adjusting for age, gender, and underlying diseases, regression analysis showed that higher BMI predicted more severe clinical classification ( OR=1.079, 95% CI 1.010-1.154). Conclusion:In COVID-19 patients, overweight and obese patients are more likely to develop into severe and critical illness, suggesting that obesity may be an important risk factor affecting the clinical outcome of COVID-19.

Objective To investigate the protective effect of dexamethasone on stress response induced by intraute-rine balloon aortic valvuloplasty (IUBAV) in a fetal lamb model. Methods Twenty-four near term twin pregnant goats were randomly assigned to control group (n=12) and dexamethasone group (intracardiac injection of dexamethasone) (n=12). Ultrasound guided IUBAV model was established. According to the combination of treatment and operation, 48 fetal lambs were divided into four groups. The following parameters were dynamically monitored by ultrasound, which were fetal and neonatal heart rate (HR), cardiac rhythm, aortic resistance index (RI) and pulsatility index (PI). On established IUBAV model, blood samples and liver tissue specimens were taken from fetal/neonatal goats for detection of blood glucose (Glu), lactate acid (LA), plasma epinephrine (E), norepinephrine (NE), cortisol (Cort), hepatic glycogen staining. Results IUBAV resulted in increased values of Glu, LA, E, NE and Cort levels, and decreased pH value, there were significant differences between pre-and 3h-post procedure (P<0.05), and significant differences were also existed in these values between pre-and 3d-post procedure (P<0.05). After administrating dexamethasone, the changes of Glu, LA, E, NE, Cort and pH levels were suppressed effectively. Fetal hepatic glycogen was consumed in large amounts due to IUBAV while recovered 3 days after IUBAV by glycogen staining. After administrating dexamethasone, hepatic glycogen consumption related to IUBAV was obviously inhibited. After IUBAV, fetal aortic RI was increased, and there was significant differences compared with pre-procedure (P<0.05). Up to 3d-post procedure, the values of RI recovered to some extent, but statistical difference was exist-ed compared with pre-procedure (P<0.05). After administrating of dexamethasone, increased aortic RI was effectively sup-pressed. Conclusions IUBAV could lead to reversible stress response and increased aortic RI in a fetal lamb model which could be alleviated by dexamethasone.