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Currently, clinically used drugs for the treatment of gout inflammation, such as colchicine, nonsteroidal anti-inflammatory drugs, and glucocorticoids, can only relieve the pain of joint inflammation and have severe hepatorenal toxicity and multiple organ adverse reactions. The NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome is a key complex that induces the onset of gout inflammation and has become a crucial target in the development of anti-gout drugs. This article reviews the research progress of anti-gout small molecules targeting the NLRP3 inflammasome and their bioactivity evaluation methods in the past five years, in order to provide information for the development of specific drugs for the treatment of gout inflammation.
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OBJECTIVES@#Ulcerative colitis (UC) is a type of inflammatory bowel disease (IBD) mainly characterized by inflammation, ulceration and erosion of colonic mucosa and submucosa. Transient receptor potential vanilloid 1 (TRPV1) is an important mediator of visceral pain and inflammatory bowel disease. This study aims to investigate the protective effect of water soluble propolis (WSP) on UC colon inflammatory tissue and the role of TRPV1.@*METHODS@#Male SD rats were randomly divided into 6 groups (n=8): a normal control (NC) group, an ulcerative colitis model (UC) group, a low-WSP (L-WSP) group, a medium-WSP (M-WSP) group, a high-WSP (H-WSP) group, and a salazosulfapyridine (SASP) group. The rats in the NC group drank water freely, and the other groups drank 4% dextran sulfate sodium (DSS) solution freely for 7 d to replicate the ulcerative colitis model. Based on the successful replication of the UC, the L-WSP, M-WSP, and H-WSP groups were given 50, 100, and 200 mg/kg of water-soluble propolis by gavage for 7 d, and the SASP group was given 100 mg/kg of sulfasalazine by gavage for 7 d. The body weight of rats in each group was measured at the same time every day, the fecal traits and occult blood were observed to record the disease activity index (DAI). After intragastric administration, the animals were sacrificed after fasted 24 h. Serum and colonic tissue were collected, and the changes of MDA, IL-6 and TNF-α were detected. The pathological changes of colon tissues were observed by HE staining, and the expression of TRPV1 in colon tissues was observed by Western blotting, immunohistochemistry, and immunofluorescence.@*RESULTS@#The animals in each group that drank DSS freely showed symptoms such as weight loss, decreased appetite, depressed state, and hematochezia, indicating that the model was successfully established. Compared with the NC group, DAI scores of other groups were increased (all P<0.05). MDA, IL-6, TNF-α in serum and colon tissues of the UC group were increased compared with the NC group (all P<0.01), and they were decreased after WSP and SASP treatment (all P<0.01). The results of showed that the colon tissue structure was obviously broken and inflammatory infiltration in the UC group, while the H-WSP group and the SASP group significantly improved the colon tissue and alleviated inflammatory infiltration. The expression of TRPV1 in colon tissues in the UC group was increased compared with the NC group (all P<0.01), and it was decreased after WSP and SASP treatment.@*CONCLUSIONS@#WSP can alleviate the inflammatory state of ulcerative colitis induced by DSS, which might be related to the inhibition of inflammatory factors release, and down-regulation or desensitization of TRPV1.
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Animals , Male , Rats , Antineoplastic Agents/therapeutic use , Colitis, Ulcerative/chemically induced , Colon/pathology , Disease Models, Animal , Interleukin-6/pharmacology , Propolis/therapeutic use , Rats, Sprague-Dawley , Sulfasalazine/therapeutic use , TRPV Cation Channels , Tumor Necrosis Factor-alpha/pharmacologyABSTRACT
ObjectiveTo introduce the Hr gene of spontaneously mutated SHJHhr mice into BALB/cAShjh inbred mice with clear genetic background,and provide a basis for study on the molecular mechanism of Hr gene mutation-induced abnormal phenotype and the application of this model.Methods Using a backcross-intercross breeding method guided by phenotypic monitoring, mutant genes from SHJHhr mice bred by spontaneous mutation were introduced into inbred BALB/cAShjh mice by homozygous mutation introgression, and the mice were bred into BALB/cA.Cg.SHJHhr (abbreviated as C.Cg.SHJHhr) mice after 10 generations. The genotypes of 90 single nucleotide polymorphism (SNP) detection sites were analyzed in C.Cg.SHJHhr mice by multiplex PCR library construction followed by next generation sequencing. Then 14 biochemical locus marker genes were detected in C.Cg.SHJHhr mice according to the method of GB/T 14927.1-2008. Finally, whole genome exon sequencing was utilized to detect the mutated genes in this mouse. ResultsFrom May 2018 to March 2022, a total of 10 generations of backcross-intercross were conducted to complete the construction of the C.Cg.SHJHhr mouse line. Among the 90 SNPs loci detected, except for rs13484115 and rs13484116, all the other loci had the same genotype as the recipient mice BALB/cAShjh. The results of biochemical marker gene detection showed that all the 14 loci of the mouse were the same as those of the recipient mouse. Whole genome exon sequencing found that the mouse had 109 site mutations compared with the recipient mouse strain, including 71 synonymous mutations, 1 stopgain, 37 missense mutations, and 20 genes involved in protein sequence alterations (including the reported Hr gene). ConclusionC.Cg.SHJHhr mice were created. Through exon sequencing and genetic analysis, three Hr mutated genes and associated mutated genes that mainly cause phenotypic variations were identified, which provides a basis for expanding the application of C.Cg.SHJHhr mice in biomedical research.
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Objective To measure and analyze biological characteristics and aging phenotype of SHJHhr mice and provide basic data for the application of the mouse model in aging mechanisms research and antiaging drug development. MethodsWith ICR mice of the same age as control group, the body mass growth data of SHJHhr mice at the age of 3 to 16 weeks, the reproduction ability of 1 to 4 fetuses and the life cycle of SHJHhr mice were measured. Blood routine (30 items) and serum biochemical indexes (25 items) of 6-week-old SHJHhr mice were measured. The venous blood of 8-week-old SHJHhr mice was collected for flow cytometry analysis to determine the content of immune cells. The aging bone structure of the cancellous bone and bone mineral density of SHJHhr mice aged 4, 8 and 26 weeks were measured by micro-CT. Histopathological changes of bone and joint of 8-week-old mice were observed. ResultsCompared with ICR mice, the female and male body mass of SHJHhr mice were significantly lower at the age of 16 weeks (P < 0.05), and the reproductive performance of female mice was low (P < 0.01) or did not have normal reproductive capacity. The shortest survival time of SHJHhr mice was 57 weeks and the longest was 71 weeks, which was shorter than those of normal ICR mice, showing obvious rapid aging phenomenon. At the same time, some physiological and biochemical indexes of blood and pathological changes of bone and cartilage tissues also showed the accelerated aging and abnormality of animal physiological functions. ConclusionSHJHhr mice have some biological characteristics of rapid aging as well as some physiological and pathological changes caused by aging.
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Visually induced motion sickness(VIMS)is the major barrier to be broken in the development of virtual reality(VR)technology,which seriously affects the progress in the VR industry.Therefore,the detection and evaluation of VIMS has become a hot research topic nowadays.We review the progress in physiological assessment of VIMS in VR based on several physiological indicators,including electroencephalogram(EEG),postural sway,eye movements,heart rate variability,and skin electrical signals,and summarize the available therapies,aiming to provide an outlook on the future research directions of VIMS.
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Humans , Motion Sickness/diagnosis , Virtual Reality , Heart RateABSTRACT
In this study, the evidence map system was used to sort out the clinical research evidence on traditional Chinese medicine(TCM) treatment of vertigo and understand the evidence distribution in this field. CNKI, Wanfang, VIP, SinoMed, PubMed, EMbase, and Web of Science were searched for the clinical randomized controlled trial(RCT) and systematic reviews/Meta-analysis on TCM treatment of vertigo in recent five years, and the evidence was analyzed and presented in the form of text and charts. The Cochrane handbook for systematic reviews of interventions was used to evaluate the quality of the clinical RCT, and the AMSTAR mea-surement tool was used to evaluate the quality of the systematic reviews/Meta-analysis. A total of 382 RCTs and eight systematic reviews/Meta-analysis were included. In recent five years, the number of published articles has been on the rise. There were many intervention measures and TCM therapies for vertigo. Outcome indicators mainly included clinical efficacy, TCM syndrome score, vertigo score, occurrence of adverse reactions, and effective rate. The overall quality of clinical RCT and systematic reviews/Meta-analysis was low. Most studies have proven the potential efficacy of TCM in treating vertigo, but there was still no clear clinical evidence of efficacy. The results show that TCM has advantages in the treatment of vertigo, but there are also problems. More high-quality studies are still lacking, suggesting that more large-sample and multi-center RCT should be conducted in the future, and the quality of relevant syste-matic reviews/Meta-analysis should be improved to fully explore the advantages of TCM in the treatment of vertigo, and provide strong support for the effectiveness and safety of TCM in the treatment of vertigo.
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Humans , Medicine, Chinese Traditional , Systematic Reviews as Topic , Treatment Outcome , Syndrome , Publications , Drugs, Chinese Herbal/therapeutic useABSTRACT
OBJECTIVE: To optimize the processing technology of fried Radix Paeoniae, and to provide reference for quality control of the processed products. METHODS: The content of paeoniflorin in fried Radix Paeoniae was determined by HPLC. The determination was performed on Agilent ZORBAX SB-C18 column with mobile phase consisted of acetonitrile-0.05 mol/L potassium dihydrogen phosphate solution (15 ∶ 85, V/V) at the flow rate of 1.0 mL/min. The column temperature was 30 ℃, and detection wavelength was set at 230 nm. The sample size was 10 μL. The appearance character of fried Radix Peaoniae were investigated by appearance color, crosssection color, hardness and smell. Taking the comprehensive score of appearance character and paeoniflorin content as evaluation index, the dosage, stir-frying temperature and stir-frying time were investigated. According to the results of single factor test, Box-Behnken response surface methodology was used to optimize above 3 factors. The optimized processing technology was validated. RESULTS: The linear range of paeoniflorin were 0.02-4.15 mg/mL (r=0.999 9); precision, stablity, repeatability and sample recovery rate meet the requirements. The optimal technology of fried Radix Paeoniae included the dosage of 374.60 g, frying temperature of 101.61 ℃, frying time of 20 min. Under optimal technology, comprehensive score of fried Radix Paeoniae ranged 97.39-98.82 in 6 times of parallel verification tests (RSD=0.54%), which was close to predicted value 98.18. The color of fried Radix Paeoniae was slightly deeper than Radix Paeoniae, which was crisp and fragrant. CONCLUSIONS: The optimized processing technology of fried Radix Paeoniae is stable and feasible, and is suitable for the preparation of the processed products.
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Objective@#To investigate the predictive value of transient elastography (FibroScan), aspartate aminotransferase-to-platelet ratio index (APRI) in the detection of esophagogastric varices in patients with liver cirrhosis. @*Methods@#236 patients with liver cirrhosis who met the criteria were selected. All patients underwent gastroscopy. According to the degree of esophagogastric varices, patients were divided into four groups: none, mild, moderate, and severe. The patient's liver stiffness (LSM) and aspartate aminotransferase- to-platelet ratio index (APRI) were measured within 3 days of gastroscopy. One-way analysis of variance was used to compare multi-group data. The ROC curves of LSM, APRI, LSM+APRI in patients with liver cirrhosis with esophageal varices were plotted and their area under the ROC curve (AUC) were compared. @*Results@#The area under the ROC curve of LSM, APRI, LSM + APRI in patients with mild esophagogastric varices were 0.856, 0.900, and 0.906, respectively; moderate esophagogastric varices were 0.857, 0.924, and 0.923 respectively; and severe esophagogastric varices were 0.801, 0.903, and 0.901, respectively. @*Conclusion@#APRI and LSM+APRI have better predictive value for patients with cirrhosis who have esophagogastric varices.
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Objective To investigate the neuropathic pain (NP) accompanying spinal cord injury (SCI),and to analyze the related factors to provide references for its prevention and treatment.Methods Seventy SCI patients with NP were selected using the DN4 scale.Their age,gender,occupation,education level,monthly income,injury position,marital status and other data were surveyed using a general questionnaire.Their NP situation was surveyed using a simplified McGill pain questionnaire (SF-MPQ).Results The patients' average visual analogous scale (VAS) score was 4.37.Their average pain rating index (PRI) according to the SF-MPQ was 8.23,with the PRI-sensory and PRI-emotional components 5.23 and 3.00 respectively.The average degree of present pain intensity was 1.86,between mild pain and discomfort,and discomfort was the description most commonly used.The most common pain descriptor was prickling pain,followed by burning pain and bulge pain.85.7% of the patients felt that their pain had an adverse effect on their affective state,and exhaustion occurred more often than any other descriptive words.Univariant analysis showed that the degree of injury,education level,marital status,monthly income,family support and medication history were all factors correlated with NP perceptions.Multi-variate logistic regression analysis showed that being unmarried and severity of injury were independent protective factors against NP.No family support,no medication and low income were independent risk factors for NP.Conclusion The type of neuropathic pain varies in patients with spinal cord injury.The intensity of the pain is mostly at a medium level.The emotional state of most patients was affected.Neuropathic pain involves many factors.Being unmarried and severely injured are independent protective factors,while lack of family support,no medication,and having low income were independent risk factors.
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Kidney stones are a common urinary system condition that can progress to kidney disease. Previous studies on the association between tea consumption and kidney stones are inconsistent. A cross-sectional study to investigate the association between tea consumption and kidney stones was conducted from 2013 to 2014 and recruited 9,078 northern Chinese adults. A total of 8,807 participants were included in the final analysis. Participants' prevalence of kidney stones was 1.07%, 1.73%, and 2.25% based on their tea consumption frequency of never, occasionally, and often groups, respectively. Compared with the 'never' group, the odds ratios (95% confidence intervals) for the occurrence of kidney stones were 1.57 (1.00-2.46) and 1.65 (1.06-2.57) in the 'occasionally' and 'often' groups, respectively. After adjusting for sex, age, and other potential confounding factors, tea consumption still significantly increased the risk of kidney stones. Tea consumption is independently associated with an increased risk of kidney stones in the investigated population, suggesting that a decrease in the consumption of tea may be a preventive strategy for kidney stones.
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Objective To observe the effects of an enriched environment (EE) on cognitive functioning and the synaptic plasticity of mice modeling post-stroke cognitive impairment (PSCI) and explore the possible mechanisms involved.Methods Mice modeling PSCI and sham-operated mice were randomly divided into 3 groups:sham-operated mice in a standard environment (the Sham+SE group),PSCI mice in a standard environment (the PSCI+SE group) and PSCI mice in an enriched environment (the PSCI+EE group).The cognitive functioning of all of the mice was quantified using a Morris water maze and their hippocampal long-term potentiation (LTP) was recorded using an electrophysiological method.The level of synaptophysin was detected using Western blotting.Synaptic ultrastructure in the hippocampus was imaged using electron microscopy.Results Compared with the Sham +SE group,the PSCI+SE group showed significantly poorer water maze performance and failed induction of contralateral LTP.Their average level of synaptophysin was significantly lower,and significant adverse changes in the synaptic ultrastructure of the hippocampus were observed,including a decreased number of synapses.The average width of the synaptic cleft,postsynaptic density and the interface curvature of the synapses were all less desirable.All of the measurements of the PSCI+EE group improved significantly compared to those of the PSCI+SE group,but were still significantly poorer than those of the Sham+SE group.Conclusions An enhanced environment can improve the cognitive functioning of mice modelling PSCI.It may be that an EE can improve synaptic plasticity in the hippocampus contralateral to the stroke.
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Objective To study the SRSF2 mutations in acute myeloid leukemia (AML) patients by using high-resolution melting analysis (HRMA). Methods PCR-HRMA analysis was performed to screen SRSF2 mutations in 140 cases with AML, and the direct DNA sequencing was used to confirm the HRMA results. Results Five percent (7/140) of AML patients were found with heterozygous SRSF2 mutations, including one case of P95R mutation, two case of P95L mutation, and four cases of P95H mutation, the above mutations were confirmed by direct DNA sequencing. The maximal sensitivity of HRMA in detecting SRSF2 mutation was close to 10%. There were no difference in gender, age and blood parameters among cases with or without SRSF2 mutations (P > 0.05). The overall survival (OS) of patients with SRSF2 mutations was inferior to those without SRSF2 mutations in AML patients (P=0.016). Conclusions HRMA analysis was a convenient, rapid, specific, high-throughput technique for scanning of SRSF2 gene mutations in AML patients. SRSF2 mutation may predict the adverse prognosis in AML patients.
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Objective To investigate the methylation situation of let‐7a‐3 promoter in patients with chronic myeloid leukemia (CML) and its clinical significance .Methods The methylation level of let‐7a‐3 promoter in the bone marrow mononuclear cells of 52 CML patients and 25 controls was detected by using the real‐time quantitative methylation‐specific PCR (RQ‐PCR) .Results The non-hypomethylation of let‐7a‐3 promoter was positive in 31 cases(59 .6% ) of 52 CML patients ,while only 1 case(4% ,1/25) in the control group ,the difference between the two groups were statistically significant (P0 .05) .The non-hypomethylation level of let‐7a‐3 in chronic phase and accel‐erate phase was significantly higher than that in blastic crisis of CML .Conclusion The hypomethylation level of let‐7a‐3 promoter is decreased with disease progression .
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BACKGROUND:Tumor recurrence results from the incomplete removal of cancer stem cel s with self-renewal characteristics, and then how to label and eliminate cancer stem cel s becomes the key to cancer treatment. OBJECTIVE:To observe the morphology,distribution and number of CD44+/C-myc+METHODS:Pathological tissues from 150 patients with colorectal cancer were taken to prepare tissue microarray, in order to observe and count CD44 cel s in colorectal cancer, and to explore the relationship between the expression and postoperative metastasis.+/C-myc+cel s by using immunohistochemical double staining. Patients were fol owed up through mobile phones , letters , and so on, and the relationship between the expression of CD44+/C-myc+cel s and postoperative metastasis were statistical y recorded.RESULTS AND CONCLUSION:There was no CD44+/C-myc+cel s in normal tissue and little in adenoma. A smal number of CD44+/C-myc+cel s distributed as dots or focal lesions in adenocarcinoma. The number of CD44+/C-myc+cel s was related to the degree of adenocarcinoma differentiation, depth of invasion, and lymph node metastasis (P<0.05). The univariate analysis showed that the overal survival rate and progression-free survival rate were associated with the number of CD44+/C-myc+cel s, lymph node metastasis and Ducks staging in adenocarcinoma (P<0.05). The multivariate analysis showed that the overal survival rate was related to CD44+/C-myc+cel amount and the progression-free survival rate was related to CD44+/C-myc+cel amount and the Ducks staging. Therefore, CD44+/C-myc+cel s are probably cancer stem cel s, and Ducks staging and CD44+/C-myc+cel amount are important prognostic factors for colorectal cancer.
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<p><b>BACKGROUND</b>Neuromyelitis optica (NMO) and multiple sclerosis (MS) are autoimmune demyelinating diseases of the central nerve system. Interleukin-7 (IL-7) and interleukin-7 receptor alpha (IL-7Rα) were proved to be important in the pathogenesis of both diseases because of the roles they played in the differentiations of autoimmune lymphocytes. The variants of both genes had been identified to be associated with MS susceptibility in Caucasian, Japanese and Korean populations. However, the association of these variants with NMO and MS has not been well studied in Chinese Southeastern Han population. Here, we aimed to evaluate the association of six IL-7 variants (rs1520333, rs1545298, rs4739140, rs6993386, rs7816065, and rs2887502) and one variant of IL-7RA (rs6897932) with NMO and MS among Chinese Han population in southeastern China.</p><p><b>METHODS</b>Matrix-assisted laser desorption/ionization time of flight mass spectrometry (MassARRAY system) and Sanger sequencing were used to determine the variants of IL-7 and IL-7RA in 167 NMO patients, 159 MS patients and 479 healthy controls among Chinese Han population in southeastern China. Samples were excluded if the genotyping success rate <90%.</p><p><b>RESULTS</b>Statistical differences were observed in the genotypes of IL-7 rs1520333 in MS patients and IL-7RA rs6897932 in NMO patients, compared with healthy controls (P = 0.035 and 0.034, respectively). There was a statistically significant difference in the genotypes of IL-7 rs2887502 between MS and NMO patients (P = 0.014). And there were statistically significant differences in the rs6897932 genotypes (P = 0.004) and alleles (P = 0.042) between NMO-IgG positive patients and healthy controls.</p><p><b>CONCLUSIONS</b>The study suggested that among Chinese Han population in southeastern China, the variant of IL-7RA (rs6897932) was associated with NMO especially NMO-IgG positive patients while the variant of IL-7 (rs1520333) with MS patients. And the genotypic differences of IL-7 rs2887502 between MS and NMO indicated the different genetic backgrounds of these two diseases.</p>
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Adolescent , Adult , Aged , Child , Female , Humans , Male , Middle Aged , Young Adult , Alleles , Asian People , Genetics , China , Gene Frequency , Genetics , Genetic Predisposition to Disease , Genetics , Genotype , Interleukin-7 , Genetics , Multiple Sclerosis , Genetics , Neuromyelitis Optica , Genetics , Polymorphism, Single Nucleotide , Genetics , Receptors, Interleukin-7ABSTRACT
The aim of this study was to investigate the expression level of the SALL4 gene and its clinical significance in patients with acute myeloid leukemia (AML) and chronic myeloid leukemia (CML). Real-time quantitative PCR (RQ-PCR) was performed to detect the expression level of SALL4 mRNA in bone marrow mononuclear cells (BMMNC) from 35 AML, 12 CML patients and 24 iron deficiency anemia patients as controls. The results indicated that the expression level of SALL4 in AML (0%-14%, median 1.43%) was obviously higher than that in controls (0% - 1%, median 0%) (P < 0.001). SALL4 expression was positive in 65.7% (23/35) AML patients. The frequency of SALL4 expression was in M2 (86.7%, 13/15) > M3 (75.0%, 6/8) > M1 (60.0%, 3/5) > M4 (14.3%, 1/7), and the difference among 4 groups was statistically significant (P = 0.008); there was no correlation of the frequency of SALL4 expression with the age, sex, white blood cell WBC count, hemoglobin concentration, platelet count and chromosomal abnormalities of AML patients (P > 0.05). All the 13 CML cases showed positive expression of SALL4 gene (1% - 128%, median 19.39%), which was higher than that in controls (P < 0.001). The analysis of receiver operating characteristic (ROC) curve showed the area under ROC curve (AUC) of AML and CML were 0.983 (95% confidence interval: 0.95 - 1.017) and 0.997 (95% confidence interval: 0.986 - 1.007) respectively. It is concluded that SALL4 expression is a common molecular event and can be considered as a molecular marker for assisting diagnosis of AML and CML.
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Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Case-Control Studies , Gene Expression , Leukemia, Myelogenous, Chronic, BCR-ABL Positive , Genetics , Leukemia, Myeloid, Acute , Genetics , Transcription Factors , GeneticsABSTRACT
<p><b>OBJECTIVE</b>To detect the common mutations (D816V and N822K) of c-kit gene in acute myeloid leukemia (AML) using high-resolution melting analysis (HRM).</p><p><b>METHODS</b>HRM analysis was established to screen c-kit mutations in PCR products of c-kit exon 17 in 21 AML patients with t(8;21). PCR products were sequenced to confirm the mutation.</p><p><b>RESULTS</b>HRM analysis identified an aberrant melting curve in 6 cases (28.6%), which were confirmed by direct DNA sequencing as one D816V mutation and five N822K mutation.</p><p><b>CONCLUSION</b>HRM analysis is a convenient, rapid, specific and high-throughput technique for scanning c-kit gene mutation in AML.</p>
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Adolescent , Adult , Aged , Child , Female , Humans , Male , Middle Aged , Young Adult , DNA Mutational Analysis , Methods , Exons , Leukemia, Myeloid, Acute , Genetics , Mutation , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Genetics , Proto-Oncogene Proteins c-kit , GeneticsABSTRACT
<p><b>OBJECTIVE</b>To quantify the expression level of GRAF gene in acute myeloid leukemia (AML) and analyze its clinical significance.</p><p><b>METHODS</b>The EvaGreen real-time quantitative polymerase chain reaction (RQ-PCR) assay was established and performed to measure the GRAF gene transcripts in 71 cases with AML and 21 with nonmalignant hematological diseases. The clinical correlation of GRAF expression was analyzed.</p><p><b>RESULTS</b>The established EvaGreen RQ-PCR assay had good specificity, reproducibility and sensitivity. The GRAF expression level was significantly lower in AML (0.01%-169.75%, median 3.82%) than that in controls (14.49%-126.85%, median 56.04%) (P<0.05). There was no correlation between the level of GRAF transcript and the sex, age, hematologic parameters, FAB subtypes and karyotypic groups (P>0.05).</p><p><b>CONCLUSION</b>The GRAF gene was down-regulated in AML, which might play a role in the leukemogenesis.</p>
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Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Young Adult , GTPase-Activating Proteins , Genetics , Leukemia, Myeloid, Acute , Genetics , Polymerase Chain Reaction , MethodsABSTRACT
<p><b>OBJECTIVE</b>To analyze the expression level and clinical significance of the preferentially expressed antigen of melanoma (PRAME) transcripts in patients with acute myeloid leukemia (AML).</p><p><b>METHODS</b>Real-time quantitative polymerase chain reaction with EvaGreen dye was established to detect the expression level of PRAME transcripts in the bone marrow mononuclear cells of 56 AML cases and 20 controls. The clinical association of PRAME transcripts was analyzed.</p><p><b>RESULTS</b>The PRAME transcripts were 0-1.46% (median 0.18%) and 0-21 618.09% (median 9.79%) in controls and AML cases, respectively (P< 0.01). Among the FAB subtypes, those with M1, M2, M3 and M4 had significantly higher level of PRAME transcripts than controls. However, those with M5 had similar level of PRAME transcripts as controls. There was a significantly negative correlation between the PRAME transcripts and cytogenetic risk groups (r= -0.438, P= 0.001). Cases in low risk had significantly higher level of PRAME transcripts than those in intermediate and high risk. Among cases with AML-M2, those with t(8;21) had significantly higher level of PRAME transcripts (135.06% -21 618.09%, median 2201.88%) than those without t(8;21)(0.14% -1696.30%, median 17.97%)(P= 0.002). In a patient with sequential samples, PRAME transcripts significantly decreased after induction therapy and significantly increased after relapse.</p><p><b>CONCLUSION</b>The PRAME transcript was highly expressed in AML patients and was a favorable marker of prognosis. Quantification of PRAME transcript can be used in monitoring disease status of AML.</p>
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Female , Humans , Male , Antigens, Neoplasm , Genetics , Case-Control Studies , Cytogenetic Analysis , Genetic Predisposition to Disease , Leukemia, Myeloid, Acute , Genetics , Therapeutics , Polymerase Chain Reaction , RNA, Messenger , Genetics , RecurrenceABSTRACT
<p><b>OBJECTIVE</b>To study the detection methods of BK virus infection in kidney transplant recipients, and to explore the clinical application.</p><p><b>METHODS</b>132 cases of renal transplant recipients were undertaken BK virus detection including presence of decoy cells in urinary sediment, urine and serum BKV-DNA to demonstrate the BK virus replication.</p><p><b>RESULT</b>Among 132 cases of renal transplant recipients, urinary decoy cell was found in 37 (28.0%) patients and the median time was 12 months after surgery. 32 (24.2%) patients were diagnosed as BK viruria at a median of 11 months after surgery, and 16 (12.1%) recipients were diagnosed as BK viremia at a median of 15 months after surgery, 5 patients with BK viruria were diagnosed as BK virus associated nephropathy according to allograft biopsy.</p><p><b>CONCLUSION</b>To make early diagnosis of BK virus infection, detection of urine decoy cells and BKV-DNA in urine and plasma sample is important,which provides an important basis for the prevention of BK virus associated nephropathy.</p>