Purpose To investigate the correlation between intervertebral disc degeneration and paraspinal muscle fatty infiltration in chronic low back pain(CLBP)using quantitative MRI techniques.Materials and Methods A total of 63 CLBP patients and 42 volunteers in Zigong Fourth People's Hospital from September 2023 to March 2024 were retrospectively collected.Magnetic resonance scans were performed using multi-echo water-fat separation technique and T2 mapping technique.Intervertebral disc degeneration was assessed using the Pfirrmann grading,while paraspinal muscle fatty infiltration was evaluated using the Goutallier grading.Proton density fat fraction(PDFF)of the multifidus and erector spinae muscles,and T2 values of the nucleus pulposus were quantitatively measured.The relationships between these parameters and their associations with age and gender were analyzed.Results Compared with healthy volunteers,CLBP patients showed significantly reduced T2 values of the nucleus pulposusand significantly increased PDFF of the paraspinal muscles(Z=-5.54-4.65,all P<0.001).The Pfirrmann grading of intervertebral discs and the Goutallier grading of paraspinal muscles were significantly correlated with the T2 value of the nucleus pulposus and the PDFF of the paraspinal muscles(|r|>0.4,P<0.05).Age and Pfirrmann grading were independent predictors of paraspinal muscle fat infiltration(β=0.228-5.682,all P<0.001),and gender was also an independent predictor at the L4/5 intervertebral disc level(β=-2.834,-3.352,both P<0.05).Conclusion Intervertebral disc degeneration and paraspinal muscle fat infiltration are closely related in CLBP,age and gender also have an impact.

Purpose To investigate the correlation between intervertebral disc degeneration and paraspinal muscle fatty infiltration in chronic low back pain(CLBP)using quantitative MRI techniques.Materials and Methods A total of 63 CLBP patients and 42 volunteers in Zigong Fourth People's Hospital from September 2023 to March 2024 were retrospectively collected.Magnetic resonance scans were performed using multi-echo water-fat separation technique and T2 mapping technique.Intervertebral disc degeneration was assessed using the Pfirrmann grading,while paraspinal muscle fatty infiltration was evaluated using the Goutallier grading.Proton density fat fraction(PDFF)of the multifidus and erector spinae muscles,and T2 values of the nucleus pulposus were quantitatively measured.The relationships between these parameters and their associations with age and gender were analyzed.Results Compared with healthy volunteers,CLBP patients showed significantly reduced T2 values of the nucleus pulposusand significantly increased PDFF of the paraspinal muscles(Z=-5.54-4.65,all P<0.001).The Pfirrmann grading of intervertebral discs and the Goutallier grading of paraspinal muscles were significantly correlated with the T2 value of the nucleus pulposus and the PDFF of the paraspinal muscles(|r|>0.4,P<0.05).Age and Pfirrmann grading were independent predictors of paraspinal muscle fat infiltration(β=0.228-5.682,all P<0.001),and gender was also an independent predictor at the L4/5 intervertebral disc level(β=-2.834,-3.352,both P<0.05).Conclusion Intervertebral disc degeneration and paraspinal muscle fat infiltration are closely related in CLBP,age and gender also have an impact.

Objective To understand the distribution of HIV-1 subtype in Wuxi city,to predict the local HIV-1 epidemics.Methods Samples were collected from the'CD4+T lymphocyte monitoring cohort study'in Wuxi from April 2013 to July 2016.HIV-1 gene was amplified,sequenced and with HIV-1 sequence database constructed,using both the ChromasPro 1.6 and MEGA 7.0 softwares.Bayesian phylogenetic inference was used to rebuild the history of HIV-1 transmission,while BEAST 1.7.2 and FastTree 2.1.10 software were used for data analysis.Statistical analysis using SPSS 22.0 software.Results Among the 205 subjects of HIV-1 infection,32.68％(67/205) of them were over 50 years old.Seven subtypes (including CRF01_AE,CRF07_BC,CRF67_01B,B,CRF08_BC,CRF68_0B,CRF78_cpx) and one of the unique recombinant forms (URFs) were detected.The main subtypes were CRF01_ AE (51.67％,93/180) and CRF07_BC (17.22％,31/180).Differences between subtypes and ways of transmission were statistically significant (x2=16.99,P≤0.05).The proportion of CRF67_01B (12.78％,23/180) was higher than before.Results from Bayesian phylogenetic inference analysis showed that the evolution rate was 2.29 × 10-3 and Time to the Most Recent Common Ancestor (tMRCA) was 2 003.10.CRF67_01B was probably related to the reference strains from Jiangsu and Anhui provinces,and had been spreading in Wuxi since 2003.Conclusions HIV-1 subtypes seemed complex and diverse in Wuxi city in 2013-2016,with CRF67_01B being pervasive.Continuous molecular monitor program was still needed to provide reference for the prediction of epidemics,from the molecular perspective.

Objective: To assess the prevalence and related factors of HIV infection among male clients of the female sex workers in Hekou Yao autonomous county of Honghe Hani Yi autonomous prefecture (Hekou county) in Yunnan province in China, 2014-2015. Methods: Serial cross-sectional survey was conducted during June 2014 to November 2015. Convenience sampling methods were used to recruit the male clients for this study. Self-reported information on social-demographic characteristics, with sexual and drug behavior patterns, was gathered. Both blood and urine samples were collected for HIV, with for opiate testing. Multivariate logistic regression and Exhaustive CHAID method were used to determine the correlated factors associated with HIV infection. Statistical analysis was used by SPSS 22.0 software and Clementine 12.0 software. Results: The overall HIV prevalence of male clients was 2.06% (16/776). Male clients who keep using condom with female sex worker was estimated as 68.81% (534/776). The last commercial sexual partner of Vietnamese male clients was all Vietnamese female sex workers. Compared with Chinese male clients, Vietnamese male clients have a higher rate of morphine positive. Factors as: age ≥50 years vs. age <30 years (OR=8.11, 95%CI: 1.26-52.16) and testing for morphine positive vs. morphine negative (OR=7.35, 95%CI: 1.42-38.06) were significantly associated with HIV infection through multiple logistic regression analysis. Through Exhaustive CHAID, it confirmed that age was the primary factor that associated with HIV infection of male clients. Conclusions Relationship between morphine and HIV infection indicated that HIV prevalence of male clients in Hekou county was influenced by the combined effect of both illegal drug use and commercial sexual behavior. Special attention should be paid to male clients over 50 years of age, on HIV intervention.

Objective? To investigate the nutritional risk status and nutritional support status of stroke patients during hospitalization so as to provide appropriate post-disease nutritional support for stroke patients and to avoid the risk of malnutrition. Methods? A total of 93 stroke patients admitted in a Class III Grade A hospital in Harbin from December 1st 2017 to September 1st 2017 were selected as the research objects in this study. Traditional evaluation method and comprehensive evaluation method were adopted to investigate and analyze the stroke patients' nutritional risk status, incidence of malnutrition and nutritional support status, and to understand the stroke patients' risk factors for malnutrition and status of getting nutritional support. Results? In 93 stroke patients,14.0% (13/93) patients had varying degrees of malnutrition; the proportion of malnutrition risk was 36.56%(34/93). Upon discharge, the handgrip strength, calf circumference and upper arm circumference were lower than those at admission and the differences were statistically significant (P＜0.05);the stroke inpatients receiving nutritional support accounted for 11.83%. Conclusions? The risk of malnutrition in patients post-stroke is high and the proportion of them who receive nutritional support is low, their nutritional status should be paid more attention to.

Objective:To study the potential effects of intensity modulated radiation therapy (IMRT) on clinical efficacy,oral mucosa reaction and immunological foundation;and to explore the effect of immunological changes on clinical efficacy and oral mucosa reaction in patients with nasopharyngeal carcinoma.Methods:A total of 200 patients with nasopharyngeal carcinoma,who came from First Department of Nasopharyngeal Radiotherapy,the First People's Hospital of Foshan from October 2008 to November 2011,were selected.The patients were treated with nasopharyngeal radiotherapy,and divided into an observation group and a control group (n=100 in each group).The control group underwent common conventional two-dimensional radiotherapy treatment,while the observation group underwent IMRT.The 5-year survival rates and recurrence rates were recorded at follow-up.After the radiotherapy,the oral mucosa in the patients were evaluated by the classification standard of acute radioactive mucositis by American Radiotherapy Oncology Group (RTOG),and the number of T lymphocyte subsets before and after treatment was detected.Results:There were significant difference in non-regional-recurrence survival rate,disease-free survival rate,local recurrence rate between the above 2 groups (all P＜0.05),but no significant difference in the distant metastasis-free survival rate (P＞0.05).The acute oral mucosa reactions of grade 1,2,3,4 in the control group were 8.00％,20.00％,12.00％,7.00％,respectively,and those were 7.00％,22.00％,15.00％,1.00％ respectively.There was no significant difference in the acute response of oral mucosa in grade 1,2 and 3 in the 2 groups (all P＞0.05),but there was significant difference in the grade 4 (P＜0.05).There were significantly difference in CD8+,CD4+/CD8+ and CD4+ T lymphocyte subsets before and after treatment in the above 2 groups (all P＜0.01);there were also significantly difference after treatment between the observation group and the control group (all P＜0.01).Conclusion:In the process of treatment in patients with nasopharyngeal carcinoma,the use of IMRT on the basis of chemotherapy is more effective than the conventional two-dimensional radiotherapy,which can reduce the proportion of grade 4 (severe) acute oral mucosa reaction.It may be related to the protective effect of IMRT on immune function in the patients.

OBJECTIVETo find a rational way in early detecting the residual tumor in patients with nasopharyngeal carcinoma (NPC) after radiotherapy.

METHODSA total of 47 NPC patients who were diagnosed residual tumor after radiotherapy and treated in our hospital from Dec 2009 to Aug 2012 were included in this study and their clinicopathological and follow-up data were reviewed and analyzed. The patients were checked by nasopharynx MRI, FDG PET-CT and were examined by biopsy of the residual tumors within two weeks after radiotherapy. The diagnosis of relapses was determined by pathological re-examination.

RESULTSAll the 47 patients were followed up for 10-42 months. Three of them had nasopharynx relapse. The others had not tumor relapse and their residual tumors disappeared completely. The specificity of MRI, FDG PET-CT and pathological tumor response in diagnosing residual tumors were 9.1%, 77.3%, and 95.5% (P<0.001). Their accuracy rates were 14.9%, 78.9%, and 95.7%, respectively (P<0.001). The M of SUVmax in the team who had moderate and severe pathologic tumor response (team A) was 3.05 and that in the team who had mild pathologic tumor response (team B) was 4.68 (P=0.012). None of patients in the team A had nasopharynx relapse. Three patients in the team B who had SUVmax ≥4 had nasopharynx relapses, and in other 2 patients who had SUVmax <4, the residual tumors disappeared during the following-up. The specificity and accuracy in diagnosing residual tumors were increased when mild pathologic tumor response combined with SUVmax4 were used.

CONCLUSIONPET-CT combined with pathologic tumor response is beneficial for early diagnosis of residual nasopharyngeal tumors after radiotherapy.

Carcinoma ; Fluorodeoxyglucose F18 ; Humans ; Magnetic Resonance Imaging ; Nasopharyngeal Neoplasms ; diagnosis ; diagnostic imaging ; radiotherapy ; Neoplasm Recurrence, Local ; Neoplasm, Residual ; diagnosis ; diagnostic imaging ; radiotherapy ; Positron-Emission Tomography ; Sensitivity and Specificity ; Tomography, X-Ray Computed

OBJECTIVE: To investigate the correlation of cyclin D1 (CCND1) G870A single nucleotide polymorphism (SNP) with radiotherapy response in patients with high risk human papillomavirus (HR-HPV) related cervical cancer.
 METHODS: A total of 273 patients with cervical cancer, who were confirmed by histopathology and hybrid capture 2 (HC-2) assay and treated by radiotherapy, were enrolled for this study. The correlation of CCND1 G870A polymorphism with tumor response in patients was assessed.
 RESULTS: Compared with patients with AA genotype, the patients with GG genotype and AA genotype showed lower sensitivity to radio-therapy treatment (adjusted ORGA=2.69, 95% CI 1.28-5.67 and adjusted ORGG=3.28, 95% CI 1.47-7.29, respectively), an increase in risks of recurrence/metastasis (adjusted ORGA=2.52, 95% CI 1.12-5.63 and adjusted ORGG=3.95, 95% CI 1.68-9.26, respectively), and shorter recurrence/metastasis-free survival (PGA=0.010 and PGG=0.045).
 CONCLUSION G870A polymorphism is a frequent variation that could be used for evaluate the radio-sensitivity and prognosis for patients with HR-HPV related cervical cancer.
Cyclin D1 ; genetics ; Female ; Genotype ; Humans ; Papillomaviridae ; Polymorphism, Single Nucleotide ; Prognosis ; Uterine Cervical Neoplasms ; genetics ; radiotherapy ; virology

Objective To find a rational way in early detecting the residual tumor in patients with nasopharyngeal carcinoma ( NPC ) after radiotherapy.Methods A total of 47 NPC patients who were diagnosed residual tumor after radiotherapy and treated in our hospital from Dec 2009 to Aug 2012 were included in this study and their clinicopathological and follow-up data were reviewed and analyzed.The patients were checked by nasopharynx MRI, FDG PET-CT and were examined by biopsy of the residual tumors within two weeks after radiotherapy.The diagnosis of relapses was determined by pathological re-examination.Results All the 47 patients were followed up for 10-42 months.Three of them had nasopharynx relapse.The others had not tumor relapse and their residual tumors disappeared completely. The specificity of MRI, FDG PET-CT and pathological tumor response in diagnosing residual tumors were 9.1%,77.3%, and 95.5%( P <0.001).Their accuracy rates were 14.9%,78.9%, and 95.7%, respectively (P<0.001).The M of SUVmax in the team who had moderate and severe pathologic tumor response (team A) was 3.05 and that in the team who had mild pathologic tumor response (team B) was 4.68(P=0.012).None of patients in the team A had nasopharynx relapse.Three patients in the team B who had SUVmax≥4 had nasopharynx relapses, and in other 2 patients who had SUVmax <4, the residual tumors disappeared during the following-up.The specificity and accuracy in diagnosing residual tumors were increased when mild pathologic tumor response combined with SUVmax4 were used.Conclusion PET-CT combined with pathologic tumor response is beneficial for early diagnosis of residual nasopharyngeal tumors after radiotherapy.

Objective To investigate the infection status of Mycoplasma pirum among male HIV/AIDS patients in Jiangsu and analyze the risk factors.The genome sequencing of Mycoplasma pirum was completed for the first time.Methods Male HIV infected individuals and AIDS patients confirmed in Jiangsu province were enrolled for 4 repeated cross-sectional studies by means of detecting the first flow urine sample and venous blood sample collected and questionnaire survey after informed consent.Genome sequencing was conducted for Mycoplasma pirum by using Illumina Hiseq 2000 sequencing platform.Results A total of 1 541 HIV/AIDS patients were surveyed in this study.The infection rates of Mycoplasma pirurm was 15.4％.The patients who received no HAART had higher risk to be infected with Mycoplasma pirum (OR=1.344,95％CI:1.008-1.792).Otherwise,high CD4+T counts was a protective factor for Mycoplasma pirum infection (OR=0.600,95％CI:0.444-0.810).Based on the sequencing result,the genome size of Mycoplasma pirum was 850 704 bp,the GC content was 24.21％ the genome contained 708 genes,the total length of genes was 734 085 bp,the average length was 1 037 bp,accounting for 86.29％ of genome.Conclusion More attention should be paid to the high infection rate of Mycoplasma pirum among male HIV/AIDS patients in the future AIDS prevention and control.The first genome sequencing of standard Mycoplasma pirum strain was completed in this study (registering Serial number:AZHZ00000001),which can provide evidence for the further research of gene function and pathogenic mechanism of Mycoplasma pirum.