Objective To evaluate MRI characteristics of soft tissue hemangioma.Methods 30 cases of soft tissue hemangiomaconfirmed by surgery,angiography and clinical diagnosis included in this study.All cases underwent plain MRI scans,24 cases of them were further-examined by contrast-enhanced MR scans.Results 24 cases were cavernous hemangioma,4 cases were capillary hemangioma and 2 were tufted hemangioma.The tumors showed moderate signal on T_1WI in 24 cases,and significantly higher signal on T_2WI in all cases(even stronger than that of fats).The vascular component within the tumor displayed remarkable enhancement and appeared as serpentinevessels,while the non-vascular tissues showed no enhancement after intravenous administration of contrast agent.Conclusion MRIexamination is of great importance in determining the position,the nature and the extent of hemangioma as well as the effectiveness ofoperation.

OBJECTIVE To analyze the values of drug-resistant Pseudomonas aeruginosa pneumonia in the older patients using thymosin ?1 combined with Sulperazone.METHODS The thirty five older patients with drug-resistant P.aeruginosa pneumonia were divided into two groups,one group was treated with thymosin ?1 combined with Sulperazone,the other group was treated with Sulperazone alone.We observed the changes in clinical symptom of the patients,results in culture of sputum,routine blood test,C-reactive protein(C-RP),albumin,pre-albumin,and T cell subset before and after drug use.RESULTS The clinical symptoms of the patients were improved,days of disappeared drug resistance of P.aeruginosa,reconverted normally days of routine blood test,decreased concentration of CRP,albumin,and pre-albumin reconverted to normalize,increased percent of CD4+,decreased percent of CD8+,CD4+ /CD8+ were more prominently reconverted to normalize in thymosin ?1 combined with Sulperazone treated group than in Sulperazone alone group.CONCLUSIONS Thymosin ?1 can improve immunological function,inflammation condition and protein metabolism.Its application with Sulperazone has a coordinated effect on drug-resistant P.aeruginosa pneumonia in the older patients.

Objective To observe the effect of bone marrow-derived mesenchymal stem cells (bMSCs) on graft healing within a bone tunnel after anterior cruciate ligament (ACL) reconstruction in rabbits.Methods The study involved 24 New Zealand white rabbits undergone ACL reconstruction with an autologous ipsilateral gastrocnemius tendon graft.Both hindlimbs were included.In one hindlimb,graft coated with fibrin glue compound by bMSCs was employed (bMSCs group).Whereas in the contralateral hindlimb,graft coated with fibrin glue without cells was employed (control group).At postoperative 2,4,6 and 8 weeks,specimens were harvested to have a biomechanical test of tensile strength and stiffness of tendon-bone interface.Results Tensile strength and stiffness of tendon-bone interface in both experiment and control groups presented a rising trend with the prolong of repair time.In contrast,significantly higher tensile strength and stiffness of tendon-bone interface were observed in experiment group since the 6 weeks (P ＜ 0.05).Conclusion bMSCs transplantation significantly enhances the early tensile strength and stiffness at tendon-bone interface after ACL reconstruction in rabbits and improves the graft healing within a bone tunnel.

Objective To study the mRNA expression of apolipoprotein B mRNA-editing enzyme-catalytic polypeptide-like 3G (APOBEC3G) in the peripheral blood mononuclear cells (PBMC) in patients with chronic hepatitis C (CHC) and its regulation by exogenous interferon-α (IFN-α).Methods Twenty-eight CHC patients were recruited as case group and 14 healthy subjects were recruited as control group.APOBEC3G mRNA level (the ratio of APOBEC3G mRNA to housekeep geue 18s rRNA) in PBMC was determined by TaqMan real-time polymerase chain reaction (RTPCR).APOBEC3G mRNA levels were also dynamically measured in CHC patients treated with pegylated interferon (IFN)-α 2a at week 0,2,4,12,24,36 and 48 of treatment,and the plasma levels of IFN-α were simultaneously detected by enzyme-linked immunosorbent assay (ELISA).The data were analyzed by t test and analysis of variance using SPSS 11.0 software.Results The level of APOBEC3G mRNA in PBMC of CHC patients before treatment was 1.60× 10-4 ± 1.35 × 10-4,which was significantly lower than healthy controls 6.20 × 10-4 ±1.30 × 10-4 (t=3.147,P=0.003).The expressions of APOBEC3G mRNA were upregulated at week 12,24,36 and 48 of IFN treatment,which were 5.69×10-3±1.61×10-2,1.01×10-2±2.15×10-2,2.01×10-2±3.75×10-2 and 2.45× 10-2 ±4.08× 10-2,respectively,and all higher than that of pretreatment (F=3.46,5.67,10.27 and 25.65,respectively; P=0.042,0.030,0.010 and 0,respectively).IFN-α level in plasma were increased with treatment and reached the plateau at week 2 of the treatment until the end of observation.Conclusion Hepatitis C virus infection may be one of the reasons of APOBEC3G downregulation.

Discipline of medical imaging has developed very quickly,which play an increasingly important role in the diagnosis and treatment of clinical disease.According to the characteristics of medical imaging disciplines,we launched reform on teaching management,teaching methods,course content,teacher training and modes of teaching,examing and researching in an aim to improve medical imaging education standards.

Objective To study the relationship between APOBEC3G mRNA level in peripheral blood mononuclear cells (PBMC) and serum hepatitis C viral RNA level in patients with chronic hepatitis C infection. Methods TaqMan real-time fluorescence relative quantitative polymerase chain reaction (RT-PCR) was used to quantify APOBEC3G mRNA levels in PBMC from 49 patients with chronic hepatitis C (CHC) and 31 healthy subjects. The relationship between APOBEC3G mRNA level and hepatitis C virus (HCV) viral load was analyzed. SPSS11. 0 statistics software was used for t test and regression analysis. Results APOBEC3G mRNA level in CHC patients [(1.5×10-5±1.9×10-5 ) copy/mL] was significantly lower than that [( 5. 2 × 10-5 ± 5. 5 × 10-5 ) copy/mL] in the healthy control subjects (t=-3.005, P＜0.01). While APOBEC3G mRNA level was not related with HCV viral loads (r=-0.082, P＞0.05). Conclusion HCV has an inhibitive effect on APOBEC3G expression, whereas APOBEC3G doesn't affect HCV replication directly in vivo.

Objective To explore the risk factors for the prognosis of acquired immunodeficiency syndrome (AIDS)-related lymphoma (ARL).Methods A total of 32 patients with ARL were enrolled in this study from Guangzhou Eighth People's Hospital during August 2011 and July 2014,who were followed up for 2 to 48 months (median 9 months).The risk factors for the prognosis of ARL were analyzed by Logistic regression analysis.Results A total of 32 patients were included,among whom 27 were males and the rest were females,with a mean age of (42.8± 13.5) years (ranging from 4 to 70 years).Regarding the clinical staging at the initial diagnosis,6 cases (18.8 ％) were classified as stage Ⅰ,4 cases (12.5％) stage Ⅱ,5 cases (15.6％) stage Ⅲ,and 17 cases (53.1％) stage Ⅳ.As for international prognostic index (IPI) score,4 cases (12.5％) were in the low risk group (IPI 0-1),5 cases (15.6％) in the low-middle group (IPI 2),8 cases (25.0％) in the middle-high risk group (IPI 3),and 15 cases (46.9 ％) in the high risk group (IPI 4-5).According to the pathological diagnosis,26 cases (81.2％) were B cell non-Hodgkin lymphoma (NHL),4 cases (12.5％) were T cell NHL,and 2 cases (6.2％) were Hodgkin lymphoma (HL) nodular sclerosis.In total,23 cases (71.9％) had received highly active antiretroviral therapy (HAART) before the first hospital visit or within one month after the diagnosis of lymphoma.Sixteen (50.0％) cases received standard chemotherapy regimen formulated by the oncology specialists.A total of 17 patients died,with the mortality rate of 53.1％.By univariate analysis,the prognostic factors included age (OR=0.915,P=0.012),high lactate dehydrogenase (OR=1.006,P=0.021) value at baseline,receiving HAART (OR =12.444,P=0.011),and standard chemotherapy regimen (OR=13.000,P=0.001).By multivariate Logistic regression,receiving standard chemotherapy regimen (OR=0.035,P=0.022) was the only prognostic factor of ARL.Conclusions The mortality of ARL is high and the most common pathological type was NHL.The prognosis could be improved by standard chemotherapy regimen on the basis of HAART.

Objective To detect the change of hepatitis C virus (HCV)RNA in the peripheral blood mononuclear cells (PBMC)and serum of patients with chronic hepatitis C (CHC)during treatment with peg-interferon α-2a (Peg IFNα-2a)plus ribavirin (RBV),and to analyze the clinical significance of HCV RNA detection in PBMC.Methods The peripheral blood samples of 20 CHC patients who visited Department of Infectious Diseases in Guangzhou No.8 People′s Hospital from June 2013 to December 2014,were collected during treatment with Peg IFNα-2a+RBV at different time points (week 0,2,4, 12,24,36 and 48).Serum and PBMC were separated.Accurate fluorescence quantification assay (Cobas TaqMan real time polymerase chain reaction[PCR])was used to detect HCV RNA level in serum,while real-time PCR and nest-PCR were applied to detect HCV RNA in PBMC.Categorical data were analyzed byχ2 test.Results Accurate fluorescence quantification of serum HCV RNA showed that HCV RNA level decline rapidly after treatment (F = 148.06,P < 0.01 ),and 18 patients achieved HCV RNA undetectable at week 12 of treatment.The positive rate of nest-PCR was higher than real-time PCR (all P <0.01).Comparison of HCV RNA levels in serum and PBMC from 20 cases found that,the clearance rate of HCV RNA in PBMC was postponed.Two patients whose HCV RNA in PBMC kept detectable relapsed at week 24 after end of treatment.Conclusions HCV RNA can be detected in PBMC of CHC patients and the positive rate of nest-PCR is higher than real-time PCR.Antiviral therapy is effective on HCV both inside and outside PBMC,but the clearance rate of HCV RNA in PBMC is postponed compared with that in serum.Slow clearance of HCV in PBMC may be a risk factor for relapse after end of treatment.

Objective:To analyze the clinical features of acquired immunodeficiency syndrome (AIDS) patients complicated with peripulmonary occupational lesions.Methods:Fifty-five AIDS patients with peripulmonary occupational lesions treated in Guangzhou Eighth People′s Hospital from January 2012 to January 2019 were included, and the clinical data of patients were retrospectively analyzed. According to the results of lung biopsy, the patients were divided into Mycobacterium infection group, fungal infection group and tumor group. The clinical characteristics, the proportion of different CD4 + T lymphocyte counts and chest computed tomography (CT) features of the three groups were compared. Chi square test was used for comparison among the three groups, and Bonferroni method was used to correct the test level for pairwise comparison. The significance level was 0.016 7 because of three pairwise comparisons. Results:Among 55 AIDS patients complicated with peripulmonary occupational lesions, pulmonary biopsy showed 14 cases with Mycobacterium infection, 12 cases with fungal infection and 15 cases with tumor lesions. Mixed diseases were found in 11 patients, including seven cases with Mycobacterium and fungus coinfection, four with tumor complicated with fungus and (or) Mycobacterium. Three with chronic interstitial pneumonia. The main clinical manifestations of 55 patients were fever, expectoration, fatigue, weight loss and superficial lymph node enlargement. There were no significant differences in symptoms/signs, white blood cell counts, hemoglobin levels, alanine transaminase and creatinine among Mycobacterium infection group, fungal infection group and tumor group (all P>0.05). There was significant difference in anti-retroviral therapy (ART) acceptance among the three groups ( χ2=15.165, P<0.01). However, the results of pairwise comparison between groups showed that there was significant difference between fungal infection group and tumor group ( χ2=7.514, P<0.016 7), while there was no significant difference between Mycobacterium infection group and tumor group, Mycobacterium infection group and fungal infection group ( χ2=0.255 and 5.306, respectively, both P>0.016 7). There were significant differences in clinical outcomes among the three groups ( χ2=15.119, P<0.01), and the pairwise comparison between the Mycobacterium infection group and the tumor group, and the fungal infection group and the tumor group showed significant differences ( χ2 =10.311 and 9.095, respectively, both P<0.016 7). The cases with CD4 + T lymphocyte count ≤50/μL, 51-<200/μL and ≥200/μL in Mycobacterium infection group were three cases, one case and 10 cases, respectively; those in fungal infection group were 10 cases, two cases and 0 case, respectively, and those in tumor group were one case, two cases and 12 cases, respectively. The difference was statistically significant ( χ2=21.284, P<0.01). Chest CT showed that there was significant difference in the types of space occupying lesions among the three groups ( χ2=13.308, P=0.003), and pairwise comparison between the two groups showed that there was significant difference between the Mycobacterium infection group and the tumor group ( χ2=11.312, P<0.016 7), while there were no significant differences between the Mycobacterium infection group and fungal infection group ( χ2=0.931, P>0.016 7), and the fungal infection group and the tumor group ( χ2=7.053, P>0.016 7). There was significant difference among the three groups in calcification focus ( χ2=8.524, P=0.004), while there was no difference between the Mycobacterium infection group and fungal infection+ tumor group ( χ2=10.982, P<0.016 7). Conclusions:Mycobacterium infection, fungal infection and tumor are the main types of peripulmonary occupational lesions in AIDS patients. The differential diagnosis could be made by combining with chest CT features, ART acceptance and CD4 + T lymphocyte level.

OBJECTIVE: To explore the clinical and genetic characteristics of two children with Williams-Beuren syndrome (WBS). METHODS: Two children who had presented at the Department of Pediatrics, General Hospital of Ningxia Medical University respectively on January 26 and March 18, 2021 were selected as the study subjects. Clinical data and results of genetic testing of the two patients were analyzed. RESULTS: Both children had featured developmental delay, characteristic facies and cardiovascular malformation. Child 1 also had subclinical hypothyroidism, whilst child 2 had occurrence of epilepsy. Genetic testing revealed that child 1 has harbored a 1.54 Mb deletion in the 7q11.23 region, whilst child 2 has a 1.53 Mb deletion in the same region, in addition with a c.158G>A variant of the ATP1A1 gene and a c.12181A>G variant of the KMT2C gene. Based on the guidelines from the American College of Medical Genetics and Genomics, the c.158G>A and c.12181A>G variants were rated as variants of unknown significance (PM1+PM2_Supporting+PP2+PP3；PM2_Supporting). CONCLUSION Both children had characteristic features of WBS, for which deletions of the 7q11.23 region may be accountable. For children manifesting developmental delay, facial dysmorphism and cardiovascular malformations, the diagnosis of WBS should be suspected, and genetic testing should be recommended to confirm the diagnosis.
Child ; Humans ; Williams Syndrome/diagnosis* ; Genetic Testing ; Facies ; Epilepsy/genetics* ; Chromosomes, Human, Pair 7/genetics* ; Chromosome Deletion