Fatty Acid-Binding Protein 4 in Patients with and without Diabetic Retinopathy

Background@#Fatty acid-binding protein 4 (FABP4) has been demonstrated to be a predictor of early diabetic nephropathy. However, little is known about the relationship between FABP4 and diabetic retinopathy (DR). This study explored the value of FABP4 as a biomarker of DR in patients with type 2 diabetes mellitus (T2DM). @*Methods@#A total of 238 subjects were enrolled, including 20 healthy controls and 218 T2DM patients. Serum FABP4 levels were measured using a sandwich enzyme-linked immunosorbent assay. The grade of DR was determined using fundus fluorescence angiography. Based on the international classification of DR, all T2DM patients were classified into the following three subgroups: non-DR group, non-proliferative diabetic retinopathy (NPDR) group, and proliferative diabetic retinopathy (PDR) group. Multivariate logistic regression analyses were employed to assess the correlation between FABP4 levels and DR severity. @*Results@#FABP4 correlated positively with DR severity (r=0.225, P=0.001). Receiver operating characteristic curve analysis was used to assess the diagnostic potential of FABP4 in identifying DR, with an area under the curve of 0.624 (37% sensitivity, 83.6% specificity) and an optimum cut-off value of 76.4 μg/L. Multivariate logistic regression model including FABP4 as a categorized binary variable using the cut-off value of 76.4 μg/L showed that the concentration of FABP4 above the cut-off value increased the risk of NPDR (odds ratio [OR], 3.231; 95% confidence interval [CI], 1.574 to 6.632; P=0.001) and PDR (OR, 3.689; 95% CI, 1.306 to 10.424; P=0.014). @*Conclusion@#FABP4 may be used as a serum biomarker for the diagnosis of DR.

Epidemiological characteristics of imported malaria cases in Fujian Province from 2014 to 2018 / 中国血吸虫病防治杂志

Objective To analyze the epidemiological characteristics of imported malaria cases in Fujian Province from 2014 to 2018, so as to provide scientific basis for the development of the control strategy for imported malaria. Methods The epidemiological data of malaria cases in Fujian Province from 2014 to 2018 were retrieved from the Notifiable Disease Reporting System and Parasitic Disease Information Reporting System of Chinese Center for Disease Control and Prevention, and the classification, origin of infections, temporal distribution, spatial distribution, population distribution, reporting institutions and diagnosis were analyzed. Results A total of 540 overseas imported malaria cases were reported in Fujian Province from 2014 to 2018, and all cases were laboratory-confirmed, including 398 cases with falciparum malaria, 88 cases with vivax malaria, 38 cases with ovale malaria, 14 cases with malariae malaria and 2 cases with mixed infections. There were 90.56% (489/540) of the imported malaria cases with infections in 27 African countries, 5.92% (32/540) with infections in 5 Asian countries and 3.52% (19/540) with infections in one Oceania country. There was no significant seasonal distribution of the cases, and the imported malaria cases were predominantly detected in Fuzhou City (80.00%, 432/540) and at ages of 20 to 49 years (81.48%, 440/540). Initial diagnosis was predominantly at the city-level medical institutions, and 77.96% (421/540) were diagnosed as malaria at the initial diagnosis institutions. The median duration from onset to initial diagnosis was 2 days and 70.19% (379/540) were diagnosed within 3 days of onset. The interval between initial diagnosis and definitive diagnosis was 0 day, with 85.37% (461/540) definitively diagnosed within 3 days of initial diagnosis. Conclusions Overseas imported malaria is a continuous problem challenging the malaria elimination programme of Fujian Province. Improving the healthcare-seeking awareness and the diagnostic capability of healthcare workers, and intensifying the monitoring and management of malaria among overseas labors are strongly recommended.

Effects of Lindera aggregate of Stir-baking with Vinegar- Aucklandia lappa on Gastric Emptying and Gastrointestinal Hormones in Functional Dyspepsia Liver Depression and Qi Stagnation Model Rats / 中国药房

OBJECTIVE： To investigate the effects of Lindera aggregate of stir-baking with vinegar-Aucklandia lappa on gastric emptying and gastrointestinal hormones in functional dyspepsia liver depression and qi stagnation （FDLDQS） model rats. METHODS： Totally 60 SD rats were randomly divided into blank group （n＝10） and modeling group （n＝50）； FDLDQS model was induced by chronic stress restraint or food deprivation or excessive fatigue in modeling group. After modeling， model rats were randomly divided into model group （normal saline）， L. aggregate of stir-baking with vinegar group （1.62 g/kg， calculated by crude drug）， A. lappa group （1.62 g/kg， calculated by crude drug）， L. aggregate of stir-baking with vinegar-A. lappa group （1 ∶ 1， m/m，1.62 g/kg， calculated by crude drug） and mosapride group （positive control， 1.35 mg/kg）， with 10 rats in each group. Administration groups were given relevant medicine intragastrically once a day； blank group and model group were given constant volume of normal saline intragastrically， for consecutive 14 d. 2 h after last medication， gastric emptying rate and small intestinal propulsion rate of rats in each group were measured by phenol red content method. After HE staining， the morphological changes of antrum tissue were observed under microscope. The contents of motilin （MTL）， gastrin （GAS） and cholecystokinin （CCK） in serum were determined by ELISA method. RESULTS： Compared with blank group， gastric emptying rate and small intestinal propulsion rate of rats were decreased significantly in model group （P＜0.01）； the serum contents of MTL and GAS were decreased significantly （P＜0.01）， while the content of CCK was increased significantly （P＜0.01）. No organic damage was found in all model groups. Compared with model group， L. aggregate stir-baking with vinegar group and A. lappa group， gastric emptying rate and small intestinal propulsion rate of rats were increased significantly in L. aggregate of stir-baking with vinegar-A. lappa group and mosapride group （P＜0.05 or P＜0.01）； serum contents of MTL and GAS were increased significantly （P＜0.01）， while the content of CCK was decreased significantly （P＜0.01）. CONCLUSIONS： L. aggregate of stir-baking with vinegar-A. lappa can accelerate gastric emptying and small intestinal propulsion rate of FDLDQS rats， increase serum contents of MTL and GAS but decrease the content of CCK； its effects are better than that of them alone.

Change of 3D cervical range of motion after single-level anterior cervical corpectomy and fusion / 中国骨伤

<p><b>OBJECTIVE</b>To study the change trend of cervical range of motion(ROM) after single-level anterior cervical corpectomy and fusion(ACCF) in treating cervical spondylotic myelopathy.</p><p><b>METHODS</b>The clinical data of 23 patients with cervical spondylotic myelopathy was retrospectively analyzed from February 2015 to April 2016. There were 11 males and 12 females, with an average age of (54.6±13.3) years. All the patients were diagnosed as cervical spondylotic myelopathy by interrogation, physical examination and radiology, and were treated by ACCF. The Coda motion system was applied to assess the cervical range of motion pre-and post-operation. JOA and VAS scores were used to evaluate the clinical outcomes.</p><p><b>RESULTS</b>The mean follow-up time was (9.4±1.6) months. Cervical ROM in all directions at 3 months postoperatively were significantly lower except for the left rotation(<0.05). There was significant difference of cervical ROM in all directions between preoperative and 6 months postoperatively(>0.05). The right lateral bending and the left rotation at 9 months postoperatively increased significantly(<0.05). Postoperative extension at 6 months was significantly better than that of 3 months postoperatively(<0.05). The extension, left and right lateral bending and left rotation at 9 months postoperatively were significantly better than of 6 months postoperatively(<0.05). Postoperative JOA scores at each time points were significantly higher than that of preoperative(<0.05) and VAS scores at each time points were significantly lower than that of preoperative(<0.05).</p><p><b>CONCLUSIONS</b>The change trend of three-dimensional cervical ROM after single-level ACCF revealed that the ROM decreased in short term, and later increased and was better than the preoperative level. Meanwhile, the neurological function improved significantly. But the short-term and long-term change trend of ROM postoperatively and the change trend of ROM after multi-level ACCF need to be further studied.</p>

Study on relationship between lncRNAs and circRNAs in tumor / 中国药理学通报

With the development of whole genome and transcrip-tome sequencing technologies, a growing body of long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) has been i-dentified and is receiving increasing attention. LncRNAs and circRNAs are non-protein encoding transcripts whose functions are crucial for advancing our comprehensive understanding of bi-ological processes in human health and diseases, specifically tumor. And there is a close relationship between circRNAs and lncRNAs in their origin and function. In this paper, we have re-viewed the recent advances of lncRNAs and circRNAs in tumor by focusing on their relationships, which may help to distinguish them and identify tumor biomarkers further.

Eestablishment of the model of goat lumbar spinal fusion by 3D printing technology and experimental perioperative management / 中国骨伤

<p><b>OBJECTIVE</b>To explore the feasibility and the attention of perioperative management of goat lumbar fusion model for individualized 3D printing technology.</p><p><b>METHODS</b>According to preoperative X-ray and CT three dimensional reconstruction data of 10 males Boer goat's lumbar(1-2 years old, weight 35-45 kg), the preoperative open height were determined, meanwhile, according to the theoretical entry point of nails, the length of steel plate, arc, and setting position, screw length for reference were determined, the lumbar lateral anterior plate was designed and 3D-printed. Goats lied on the right side, under the general anesthesia, the lumbar vertebrae of the goats and the adjacent intervertebral disc were resected, and the titanium cage after the bone graft was implanted into the goat, the 3D-print lateral bone plate was fixed. After operation, feeding, fluid infusion, anti infection, postoperative complications management, respiratory digestion perioperative management were performed.</p><p><b>RESULTS</b>The 10 models for goats were successful in results. Postoperative X-ray film and three-dimensional reconstruction of CT showed that titanium cage and bone plate were in good position and reliable. Three months after the operation, CT 3D reconstruction and micro-CT of the goat were observed, and the fusion of the spine was observed. Imaging studies showed that the fusion of the lateral bone plate fixation titanium cage was both at the end of the titanium cage and the dense bone trabecular formation between the vertebral bodies.</p><p><b>CONCLUSIONS</b>The 3D printing technology sets up the goat lumbar spinal fusion model successfully, which is a kind of effective, more successful, reliable and stable method, perioperative management. The method is scientific, practical, and more humanized, to ensure that lumbar lateral successfully implanted the nail plate of lateralanterior internal fixation system, with reduction of occurrence of surgical complications.</p>

Cost effectiveness analysis of monitoring measures for eliminating malaria at different stages in Fujian, China / 中国人兽共患病学报

Using the theory and method of health economics,we analyzed CER and ICER in early elimination stage (2005-2009),the late elimination stage (2015-2010) and the post elimination phase (2016-).Results showed that annual total cost of investment was as following:64 235 144.8 Yuan in early elimination stage,11 250 248 Yuan in the late elimination stage,and 11 075 228.8 Yuan the post elimination phase.Effect analysis showed that the difference of the three-stage monitoring measures was statistically significant (P＜0.01).Number of cases within 3 days of onset (rate) prompt monitoring measures had the best effect in the late elimination stage,number of blood tests (rates),number of cases reported (rates) and number of cases within 1 days of onset (rate).Prompt monitoring measures had the best effect in the post elimination phase.CER and IC-ER showed that taking the number of blood test as the effect index,the monitoring measures in the late elimination stage were more cost effective.The number of cases reported,number of cases within 3 days of onset and number of cases within 1 day of onset were as the effect index,the monitoring measures in the post elimination phase were more cost effective.The elimination effect for monitoring measures after stage was optimal,cost the least,and might be the most effective.The study provides basic data for Fujian Province to strengthen the monitoring of imported cases of malaria on the construction of the management mechanism,and scientific and effective evaluation of monitoring measures,which has very important practical value and significance.

Classification of upper cervical fractures: a review / 中国骨伤

Upper cervical fracture-dislocations are series of pathological injuries occurred in occipital, atlas and axis caused by traumatic impact, which often results in severe clinical consequences, such as paraplegia, quadriplegia, and even death. In light of the potential severe clinical outcomes, it is important to define the type of upper cervical fracture-dislocations depending on which the clinician can deal with the disease properly. Owing to its specific anatomical structures, the upper cervical fractures occurr to the unique osseous structures or ligamentous connections always present in predictable patterns. Common fracture include occipital condylar fracture, atlanto-occipital dislocation, atlas fracture, and the three types of fractures of axis, including odontoid fracture, Hangman's fracture and axis body fracture. In this paper we will review the literatures about the classification and management of upper cervical fracture, to help the clinicians to treat their patients better.

Extraction Technology Optimization for Yushaoshang Liposomal Gels by Orthogonal Test / 中国药师

Objective:To optimize the conditions in the extraction process of Yushaoshang liposomal gels. Methods: Using the content of hydrobererine and extract yield as the indices, the optimum extraction conditions were screened by orthogonal test. Results:The optimum extraction conditions were as follows:Rhizoma coptidis was crashed into small particles as 10 mesh sieve, heating extrac-ted three times with 10-fold,8-fold and 8-fold water, and extracting 3h, 2h and 2h,respectively. Conclusion:The extraction technology is reliable and available in the preparation of Yushaoshang liposomal gels.

Ultrasound measurement of fetal posterior fossa at 11 to 13⁺⁶ gestational weeks for screening open spina bifida / 南方医科大学学报

<p><b>OBJECTIVE</b>To establish the normal reference ranges of transabdominal ultrasound measurements of the posterior fossa structure in fetuses at 11 to 13⁺⁶ gestational weeks and explore their clinical value in screening open spina bifida (OSB).</p><p><b>METHODS</b>Between January, 2013 and September, 541 randomly selected normal fetuses underwent nuchal translucency at the gestational age 11 to 13⁺⁶ weeks. The parameters of the posterior fossa were measured in mid-sagittal view of the fetal face and the axial view of the transverse cerebellum insonated through the anterior fontanel by transabdominal ultrasound to establish the normal reference ranges. The measurements were obtained from 3 fetuses with OSB for comparison with the reference ranges.</p><p><b>RESULTS</b>In normal fetuses, the parameters of the posterior fossa measured in the two views showed no significant differences (P>0.05). Two high echogenic lines were observed in normal fetuses, as compared with one in fetuses with OSB representing the posterior border of the brain stem and the anterior border of the fourth ventricle. The line between the posterior border of the fourth ventricle and the anterior border of the cisterna magna was not displayed in fetuses with OSB. The anteroposterior diameters of the brain stem, the fourth ventricle, and cisterna magna all increased in positive correlation with the crown-lump length in normal fetuses. In the 3 OSB fetuses, the anteroposterior diameter of the brain stem exceeded the 95th percentile and the anteroposterior diameter of fourth ventrical-cisterner magena was below the 5th percentile of the reference range for CRL; the brain stem to fourth ventrical-cisterner magena anteroposterior diameter ratio was increased to above 1.</p><p><b>CONCLUSION</b>The established normal reference ranges of the parameters of fetal posterior fossa may provide assistance in early OSB detection. The absence of the posterior border of the fourth ventricle and the anterior border of the cisterna magna and a brainstem to fourth ventrical-cisterner magena anteroposterior diameter ratio greater than 1 can be indicative of OSB at 11 to 13⁺⁶ gestational weeks.</p>

Clinical application of ultrasound three perpendicular planes plus special planes in diagnosis of fetal cleft lip/palate / 中华医学超声杂志（电子版）

Objective To study the clinical significance of the method of three perpendicular planes plus special planes in diagnosing fetal cleft lip /palate by prenatal ultrasound .Methods The approach of three perpendicular planes and special planes were used in diagnosing 110 cases of cleft lip/palate.The sonogram features in each section were analyzed and the outcomes were recorded during follow-up.Results On prenatal ultrsound ,110 cases were examined with three perpendicular planes method .The coronary section could be displayed at 100%cases (110 cases), sagittal section 76.4%cases (84 cases),transverse section 96.4%cases (106 cases) and parasagittal section 25.5%cases (28 cases).With special planes method,74 cases were examined .The section through pyriform aperture could be displayed in 47 cases,in 45 cases on the section through the lower lip/lower jaw/submandibular triangle ,and in 16 cases on the section through the cheek.Combining the three perpendicular planes and special planes methods ,94.5%(104/110) cases could be diagnosed definitely.Six cases (5.5%,6/110) were missed because of fetal position or oligoamnios . Conclusions The method of three perpendicular planes plus special planes is effective in prenatal ultrasound diagnosing cleft lip/palate,which is of great help in improving prenatal diagnostic accuracy of fetal cleft lip/palate.

Mitochondria-mediated apoptosis induced by 5-aminolevulinic acid-based photodynamic therapy in HL-60 cells / 中国实验血液学杂志

This study was purposed to investigate the changes of mitochondrial membrane potential (MMP) and apoptosis-related gene Bcl-2 expression of HL-60 cells treated with 5-aminolevulinic acid-based photodynamic therapy (ALA-PDT). HL-60 cell line was used as a model and divided into 4 groups: ALA group, PDT group, ALA+PDT group and control group. The change of MMP was detected by flow cytometry with JC-1 (lipophilic cation 5, 5', 6, 6'-tetrachloro-1, 1', 3, 3'-tetraethyl-benzimidazol-carbocyanine iodide); the mRNA expression of Bcl-2 was determined by semi-quantitative RT-PCR and real-time PCR. The results demonstrated that MMP significantly decreased after treatment with ALA-PDT and the ratio of cells with disrupted MMP obviously increased in ALA+PDT group in time-dependence manner, as compared with control, ALA and PDT groups (P < 0.05), while no difference between ALA and PDT groups was found. The semi-quantitative RT-PCR and real-time PCR showed that the expression level of Bcl-2 was obviously down regulated at 2 h after ALA-PCT, further down-regulated at 4 h, and lasted in low level at 24 h. It is concluded that ALA-PDT-induced apoptosis of HL-60 cells is associated with its effect on MMP, that is ALA-PDT promotes cell apoptosis through effect on mitochondrial function.

Practical value of cardiac magnetic resonance imaging in unstable angina diagnosis / 中华急诊医学杂志

Objective To investigate the value of magnetic resonance imaging of heart in diagnosis of unstable angina pectoris.Methods A total of 24 patients with unstable angina pectoris including 15 male and 9 female confirmed by coronary angiography (CAG) were enrolled.All 24 patients were scanned by cardiac magnetic resonance imaging ( CMR),and then the analyses of the first pass images and the delayed contrast enhancement images were carried out for comparison.The findings of cardiac structure,cardiac function,myocardial ischemia,myocardial necrosis,myocardial edema were taken for answering to the images made by echocardiography (UCG) and coronary angiography (CAG) linked with conventional examinations for the diagnosis of coronary disease.Results Compared with the UCG,CMR provided more detailed information about the right ventricle,and the information about left ventricular structure and function given by UCG was very good consistent with that offered by CMR,and CMR could detect myocardial ischemia,myocardial edema and the myocardial necrosis,which were of good consistency with findings often observed by conventional inspection methods.Conclusions Cardiac magnetic resonance imaging (CMR) is of high value in diagnosis and evaluation of unstable angina pectoris and is far superior over other conventional methods for examinations of unstable angina pectoris.

Preparation and identification of monoclonal antibody against PNAS-2 protein / 中国实验血液学杂志

This study was purposed to prepare and primarily identify the specific monoclonal antibodies (McAbs) against the apoptosis related protein PNAS-2 so as to provide the essential tool for study of PNAS-2 function. The McAbs against PNAS-2 were prepared via the immunization of mice, cell fusion and cloning using synthetic peptide of PNAS-2 as immunogen; the specificity, titer and subtype of McAb were detected by Western blot, ELISA and immunofluorescence. The results showed that the stable hybridoma cell line S-31-7 producing McAbs against PNAS-2 protein was successfully obtained. The immunoglobulin of the McAb was identified to be IGg1lambda. The titer of ascetic fluid fled McAb were 1:8,000. A single specific band with 28 kD was shown in Western blot test, and the antigen recognized was present in cell cytoplasm by immunofluorescence. In conclusion, the obtained McAb against PNAS-2 displays strong specificity and high titer, which may be applied to the advanced research on PNAS-2 protein.

Research on mechanism of chloroquine phosphate-induced U937 cell apoptosis / 上海第二医科大学学报

Objective To observe the effects of chloroquine phosphate on apoptosis of leukemic cell line U937, and investigate whether chloroquine phosphate induces leukemic cell apoptosis by normalizing protein PNAS-2's abnormal subcellular location. Methods Chloroquine phosphate of different concentrations were added into culture fluid of leukemic cell line U937 at logarithmic phase. MTr was used to measure cell proliferation, flow cytometry and laser confocal microscopy were applied to detect cell apoptosis, and immunofluorescence technology was employed to observe the effects of chloroquine phosphate on the changes of subcellular location of protein PNAS-2. Results Apoptosis of leukemic cell line U937 was significantly induced by 50 μg/mL chloroquine phosphate, and subcellular location of protein PNAS-2 was changed. Conclusion Chlorequine phosphate can induce apoptosis of leukemic cell line U937, and the mechanism may be related to the normalization of PNAS-2's abnormal subcellular location in U937 cell line. Chloroquine phosphate has the potential to be used in leukemic therapy.

Polymorphisms of CYP3A5 gene in acute leukemia patients and their role in chemotherapy and prognosis / 中国实验血液学杂志

The objective of study was to investigate the role of the polymorphisms and protein expression of CYP3A5 gene in the therapy and prognosis of acute leukemia (AL) patients, the polymorphisms of CYP3A5 gene and the expression of protein CYP3A5 were detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and immunohistochemistry method respectively. The results showed that there were three CYP3A5 genotypes in the 88 cases, namely CYP3A5*1/*1, CYP3A5*1/*3 and CYP3A5*3/*3 with frequencies of 26%, 50% and 24%, respectively. There were no significant differences in clinic data between the three groups, but the expressions of CYP3A5 of three groups were (36.6+/-19.2)%, (7.8+/-9.2)%, (0.5+/-0.9)%, the OS were (11.6+/-2.1) months, (30.5+/-12.2) months, (52.3+/-8.5) months, and the DFS were (7.5+/-1.8), (27+/-15.8), (52.3+/-8.1) months, respectively (p<0.05). It is concluded that the polymorphism of CYP3A5 gene is not related with the morbidity of AL, but closely associated with the expression of CYP3A5 in AL patients, and the latter are closely associated with the chemotherapeutic effect and prognosis. CYP3A5 genotype may be used as a new predictor to the chemotherapeutic effect and prognosis in AL cases.

Effect of daunorubicin and cytarabine on cell line NB4 / 中华血液学杂志

<p><b>OBJECTIVE</b>To explore whether daunorubicin (DNR) combined with cytosine arabinoside (Ara-C) and DNR alone have similar effect on acute promyelocytic leukemia (APL) cell line NB4 and acute myeloblastic leukemia cell line HL-60 in vitro.</p><p><b>METHODS</b>Cell morphology, cells viability, and cell apoptosis (Annexin-V by flow cytometry assay) were analysed.</p><p><b>RESULTS</b>After incubation with DNR plus Ara-C for 24 hours,NB4 cell viability [(36.75 +/- 3.82)%] (n = 6) and cell apoptosis rate [(21.24 +/- 5.82)%] (n = 3) did not change significantly compared to that treated with DNR alone for 24 hours [(35.73 + 6.28 )%, (22.55 +/- 3.26)%, respectively] (P > 0.05). However, HL-60 cell viability [(67.17 +/- 2.07)%] and cell apoptosis rate [(48.05 +/- 0.92)%] changed significantly in DNR plus Ara-C group compared with DNR alone [(63.31 +/- 1.80)% ,(41.51 +/- 0.89)%, respectively] (P < 0.01 and < 0.05, respectively).</p><p><b>CONCLUSION</b>DNR plus Ara-C and DNR alone have similar effect on NB4 cells, but have different effect on HL-60 cells.</p>

Effects of quercetin on morphology and VEGF secretion of leukemia cells NB4 in vitro / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To investigate the effects of quercetin on cell morphology and VEGF expression of acute myeloblastic leukemia cells NB4 in vitro.</p><p><b>METHODS</b>The cytomorphology of NB4 cells was assessed by Wright-stain, apoptosis rate by apoptotic marker Annexin V, and VEGF secretion level by ELISA.</p><p><b>RESULTS</b>Typical apoptosis was found in NB4 cells after treatment with quercetin. Apoptotic marker Annexin V analysis showed that the apoptotic rate of NB4 cells was increased after treatment with quercetin. The secretion of VEGF of NB4 cells was significantly decreased after treatment with quercetin.</p><p><b>CONCLUSION</b>Quercetin can induce apoptosis and inhibit secretion of VEGF in NB4 leukemia cells.</p>

Prognostic values of lactate dehydrogenase and ?_2 microglobulin levels in adult acute myeloid leukemia / 上海第二医科大学学报

Objective To investigate the prognostic values of serum lactate dehydrogenase(LDH) and beta-2 microglobulin(?2-MG) levels in patients with acute myeloid leukemia(AML). Methods The associations of serum LDH and ?2-MG levels at diagnosis,remission and relapse with treatment and prognosis in 68 patients with AML were retrospectively analysed. Results There were no difference in LDH and ?2-MG between AML subtypes patients.The level of serum LDH and ?2-MG at diagnosis and relapse were much higher than those at remission.Patients with lower level of LDH and ?2-MG got higher CR rate and longer term overall survival and disease-free survival.Patients with higher level of both LDH and ?2-MG got lower CR rate,shorter term of overall survival and disease-free survival than those with higher level of LDH or ?2-MG or those with normal level of LDH and ?2-MG. Conclusion LDH and ?2-MG is a singificant prognostic indicator for AML.While combined LDH and ?2-MG are more definite for the treatment and diagnosis.

The changes of mRNA expression of telomerase subunits induced by Ara-C in HL-60 cells / 中国癌症杂志

Background and purpose:Ara-C is one of the most effective and common agents in the treatment of acute nonlyphocytic leukemia. Telomerase is a unique complex of ribonucleoprotein. It plays an important role in the pathogenesis and development of cancer. In this study, we investigate the changes of mRNA expression of telomerase subunits in HL-60 cells induced by Ara-c and try to come up with a theory that could help to assess the efficacy of Ara-C. Methods:The combinations of various Ara-C concentration and the incubation time were used to treat HL-60. The ratios of apoptotic cell to necrosis cell were determined by flow cytometry and the expressions of telomerase subunits mRNA were evaluated by RT-PCR.Results:① There was no influence on transcription of telomerase subunits gene after HL-60 cells was cultured with 0~0.2ug/ml Ara-C for 12 hours;② 2ug/ml and 10ug/ml of Ara-C could down regulate the expression of hTERT from 0.80+0.07 to 0.50+0.04 and 0.39+0.03, not hTR and hTP1;③ with longer incubation with 10ug/ml of Ara-C, the percentage of apoptosis could be increased. The maximal induction of apoptosis (18.16+4.25%) could be reached at 12hrs treatment of Ara-C, then gradually decreased later on. The rate of necrosis increased with time, the maximal percentage(57.94+12.03%) of necrosis was observed at 48hrs of incubation time with drug. The mRNA level of hTERT gene also decreased along with the cultured time , the lowest value (0.18+0.03) has been documented at 48hrs time point, but not hTR、TP1.Conclusions:① Ara-C could down-regulate the expression of hTERT mRNA in a dose-and time-dependent manner, but not hTR、hTP1;② There might be no relationship between the percentage of apoptosis induced by Ara-C apoptosis and the expression of telomerase hTERT gene mRNA, but a close relationship between necrosis and the expression of hTERT mRNA has been found.