1.Tiaowei Jiannao acupuncture for post-ischemic stroke insomnia: a randomized controlled trial.
Run ZHANG ; Xinwang CHEN ; Mengyu WANG ; Wenming CHU ; Lihua WU ; Jing GAO ; Peidong LIU ; Ce SHI ; Liyuan LIU ; Bingzhen LI ; Miaomiao JI ; Yayong HE
Chinese Acupuncture & Moxibustion 2025;45(10):1405-1413
OBJECTIVE:
To observe the efficacy and safety of Tiaowei Jiannao acupuncture (acupuncture for regulating defensive qi and nourishing brain) for post-ischemic stroke insomnia (PISI).
METHODS:
A total of 96 patients with PISI were randomized into an acupuncture group (32 cases, 1 case was excluded), a medication group (32 cases, 1 case dropped out, 1 case was excluded) and a sham-acupuncture group (32 cases, 1 case dropped out, 1 case was excluded). In the acupuncture group, Tiaowei Jiannao acupuncture was applied at bilateral Shenmai (BL62), Zhaohai (KI6), Hegu (LI4), Taichong (LR3), and Baihui (GV20), Sishencong (EX-HN1), Yintang (GV24+), Shenting (GV24), once a day, 1-day interval was taken after 6-day treatment, for 3 weeks totally. In the medication group, eszopiclone tablet was given orally, 1-3 mg a time, once a day for 3 weeks. In the sham-acupuncture group, non-invasive sham acupuncture was applied, the acupoint selection, frequency and course of treatment were the same as the acupuncture group. Before treatment, after 2,3 weeks of treatment, the scores of Pittsburgh sleep quality index (PSQI), self-rating sleep scale (SRSS), National Institutes of Health Stroke scale (NIHSS), Hamilton depression scale-17 (HAMD-17) were observed; before and after treatment, the sleep parameters were recorded using polysomnography (PSG); and the efficacy and safety were evaluated after treatment in the 3 groups.
RESULTS:
After 2,3 weeks of treatment, the scores of PSQI, HAMD-17 and SRSS in the acupuncture group and the medication group, as well as the SRSS scores in the sham-acupuncture group were decreased compared with those before treatment (P<0.05); after 2 weeks of treatment, the NIHSS score in the acupuncture group was decreased compared with that before treatment (P<0.05); after 3 weeks of treatment, the NIHSS scores in the acupuncture group, the medication group and the sham-acupuncture group were decreased compared with those before treatment (P<0.05). After 3 weeks of treatment, the scores of PSQI, SRSS, HAMD-17 and NIHSS in the acupuncture group and the medication group, as well as the NIHSS score in the sham-acupuncture group were decreased compared with those after 2 weeks of treatment (P<0.05). After 2,3 weeks of treatment, the scores of PSQI, SRSS and HAMD-17 in the acupuncture group and the medication group were lower than those in the sham-acupuncture group (P<0.05), the NIHSS scores in the acupuncture group were lower than those in the medication group and the sham-acupuncture group (P<0.05); after 3 weeks of treatment, HAMD-17 score in the acupuncture group was lower than that in the medication group (P<0.05), the NIHSS score in the medication group was lower than that in the sham-acupuncture group (P<0.05). Compared before treatment, after treatment, the total sleep time was prolonged (P<0.05), the wake after sleep onset, sleep latency, and non-rapid eye movement (NREM) sleep latency were shortened (P<0.05), the sleep efficiency was improved (P<0.05), the number of awakenings was reduced (P<0.05), the percentage of rapid eye movement (REM%) and the percentage of NREM stage 1 (N1%) were decreased (P<0.05), the percentage of NREM stage 2 (N2%) and the percentage of NREM stage 3 (N3%) were increased (P<0.05) in the acupuncture group and the medication group; the sleep latency was shortened in the sham-acupuncture group (P<0.05). After treatment, the PSG indexes in the acupuncture group and the medication group were superior to those in the sham-acupuncture group (P<0.05); in the acupuncture group, the number of awakenings was less than that in the medication group (P<0.05), the REM% and N1% were lower than those in the medication group (P<0.05), the N2% and N3% were higher than those in the medication group (P<0.05). The total effective rate were 93.5% (29/31) and 90.0% (27/30) in the acupuncture group and the medication group respectively, which were higher than 10.0% (3/30) in the sham-acupuncture group (P<0.05). There was no serious adverse events in any of the 3 groups.
CONCLUSION
Tiaowei Jiannao acupuncture improves the insomnia symptoms in patients with ischemic stroke, improves the quality of sleep, increases the deep sleep, promotes the recovery of neurological function, and relieves the depression. It is effective and safe for the treatment of PISI.
Humans
;
Acupuncture Therapy
;
Male
;
Sleep Initiation and Maintenance Disorders/physiopathology*
;
Female
;
Middle Aged
;
Aged
;
Acupuncture Points
;
Treatment Outcome
;
Adult
;
Ischemic Stroke/complications*
;
Stroke/complications*
;
Sleep
2.Analysis on personal protection in occupational population at high risk for brucellosis and influencing factor in China
Zhe WANG ; Shenghong LIN ; Xinrong LIU ; Aizhi YU ; Ruiqing LI ; Xinwang LIANG ; Biqiao HOU ; Yifei WANG ; Caixiong LIU ; Cuihong ZHANG ; Liping WANG
Chinese Journal of Epidemiology 2024;45(3):379-384
Objective:To understand the current status of personal protection in occupational population at high risk for brucellosis in China and provide evidence for the evaluation of implementation of National Brucellosis Prevention and Control Plan (2016-2020).Methods:Four counties in Shanxi Province and Xinjiang Uygur Autonomous Region were selected to conduct a questionnaire survey in occupational population at high risk for brucellosis from December 2019 to July 2020 by using cross-sectional survey methods.Results:A total of 2 384 persons at high risk for brucellosis were surveyed, and the standardized utilization rate of personal protective equipment (PPE) was 20.13% (480/2 384). The utilization rate of glove, mask, rubber shoe, and work cloth were 38.26% (912/2 384), 31.80% (758/2 384), 32.01% (763/2 384) and 30.87% (736/2 384),respectively. There were significant differences in the utilization rate and standardized utilization rate of the four types of PPE among populations in different age, occupation, educational level and area groups (all P<0.001). The utilization rate and standardized utilization rate of PPE were lower in people over 60 years old, women, farmers, and those with lower educational level. The results of multivariate analysis showed that occupation and area were the influencing factors for the standardized utilization of PPE, the standardized utilization rates of PPE were higher in herdsmen and veterinarians. The standardized utilization rate of PPE in Yanggao County and Huocheng County was significantly higher than that in Zuoyun County and Hunyuan County. Conclusions:The utilization rate of the four types of PPE in occupational population at high risk for brucellosis was not high in China, and the standardized utilization rate was low, lower than the requirement in National Brucellosis Prevention and Control Plan, and there were significant differences among different areas. It is urgent to distribute PPE to occupational population at high risk for brucellosis and carry out health education about PPE utilization. Meanwhile, it is necessary to strengthen information exchange or sharing among different areas.
3.Wide beam-harmonic motion imaging for locating focus of high intensity focused ultrasound:An in vitro study
Yao RAN ; Jiahong XU ; Xinwang SHI ; Yijing LIU ; Dejia CAI ; Xiaowei ZHOU
Chinese Journal of Medical Imaging Technology 2024;40(11):1655-1660
Objective To observe the effectiveness of ultrasound wide beam(WB)-based harmonic motion imaging(HMI)(WB-HMI)for locating irradiation focus of high intensity focused ultrasound(HIFU)for in vitro tissue.Methods WB-HMI technology was developed with acoustic radiation force and ultrasound imaging as the key technology.For in vitro porcine tenderloin and bovine liver tissue,different amplitude modulation(AM)frequencies(25-100 Hz)and excitation acoustic power(0.7-28 W)were used to achieve WB-HMI localization of HIFU irradiation focus,and the differences of WB-HMI localization of HIFU irradiation focus under different parameter combinations were observed.Taken the actual focus position on ultrasonic image after HIFU as the standard and the focus positioning error<1 mm as the effective standard of WB-HMI locating irradiation focus,the locating success rate was calculated.Results The larger the acoustic power,the larger the displacement amplitude of irradiation focus by WB-HMI at the same AM frequency,while the smaller the AM frequency,the larger the displacement amplitude of irradiation focus located by WB-HMI under the same acoustic power.Under different AM frequencies,for in vitro porcine tenderloin,the success rate of WB-HMI for locating HIFU radiation focus was higher than 90.00%when acoustic power was 15 W or 22 W,whereas the success rate showed a decreasing trend when the acoustic power was 28 W.For in vitro bovine liver tissue,the success rate of WB-HMI localization was 100%when acoustic power was ≥7.0 W.Conclusion WB-HMI could be used to effectively locate HIFU irradiation focus for isolated tissue.
4.Longitudinal analysis of perioperative serum inflammatory factors in patients with HICH and correlation with prognosis
Jing LIU ; Jin WANG ; Wenyan LIU ; Xinwang CAI ; Xiang XU
Chinese Journal of Geriatric Heart Brain and Vessel Diseases 2024;26(8):902-905
Objective To longitudinally analyze the perioperative serum levels of inflammatory fac-tors in patients with hypertensive intracerebral hemorrhage(HICH),and to explore their correla-tion with prognosis.Methods A total of 173 HICH patients admitted to our hospital from Febru-ary 2021 to January 2023 were consecutively enrolled.Their serum levels of inflammatory factors were measured before operation,and in 6,12,24,48 and 72 h after operation.All of them were fol-lowed up for 6 months,and according to their prognosis,they were divided into good prognosis group(116 patients)and poor prognosis group(57 patients).Multivariate logistic regression anal-ysis was applied to analyze the correlation of the perioperative serum inflammatory factors with HICH prognosis.Results In these HICH patients,IL-6 and IL-1β were increased continuously within 72 h after operation,and the TNF-α level reached its peak at 48 h after operation.The poor prognosis group had significantly longer time from bleeding to admission(6.32±1.50 h vs 5.14±2.00 h),larger hematoma[35.50(24.50,46.00)ml vs 30.00(21.00,41.50)ml],and higher ratio of hematoma breaking into ventricles(28.07%vs 2.59%),and lower GCS score at admission(10.07±1.32 vs 11.00±0.85)when compared with the good prognosis group(P<0.05,P<0.01).Multivariate logistic regression analysis showed that the levels of IL-6,IL-1β and TNF-α at different postoperative time points were independent influencing factors for poor prognosis of HICH patients(P<0.05,P<0.01).Conclusion Serum levels of inflammatory factors IL-6,IL-1βand TNF-α are all elevated in HIGH patients during perioperative period,and their increments at different time points are correlated with the increased risk of adverse prognosis in the patients within 6 months after operation.
5.Metabolomics-based approach to study effects of AEE on rat metabolism
Qi TAO ; Liping FAN ; Haitian GUO ; Ning MA ; Xinwang LIU ; Yajun YANG ; Jianyong LI
Chinese Journal of Veterinary Science 2024;44(8):1782-1792
The effect of aspirin eugenol ester(AEE)on the metabolism of rats was investigated to provide theoretical references for the clinical rational use of the drug.Firstly,the appropriate con-centration of AEE suspension was prepared.Wistar rats were randomly divided into three groups:the normal group,the AEE low-dose group(18 mg/kg),and the AEE high-dose group(72 mg/kg).The rats in the dosing group were dosed once daily,and the Wistar rats in the normal group were dosed once daily with an equal volume of 0.5%sodium carboxymethylcellulose solution.The feces and urine were collected after 7 days of continuous gavage,and the feces and urine were ana-lyzed by ultra-performance liquid chromatography-quadrupole time-of-flight tandem mass spec-trometry(UPLC-QTOF-MS/MS)for non-targeted metabolomics and Metabo Analyst 5.0 was used for metabolic pathway enrichment.The results showed that the dose of AEE selected in this experiment was not toxic to the growth of rats.The results of the metabolomics study found that 10 and 8 differential metabolites were identified in rat feces and urine,respectively,involving meta-bolic pathways such as phenylalanine,tyrosine and tryptophan biosynthesis,phenylalanine metabo-lism,steroid hormone biosynthesis,biosynthesis of unsaturated fatty acids,aminosugar and nucleo-tide sugar metabolism,fatty acid biosynthesis,and β-alanine metabolism.AEE had no significant effect on the body weight of rats(P>0.05),but AEE could affect the metabolism of rat organ-ism.Fecal metabolites were mainly involved in metabolic pathways including unsaturated fatty acid biosynthesis,tyrosine metabolism,fatty acid biosynthesis,and steroid hormone biosynthesis;urina-ry metabolites were mainly involved in metabolic pathways including purine metabolism,fatty acid biosynthesis,arginine,and proline metabolism.Therefore,the metabolic effects of AEE on rats are mainly closely related to the regulation of lipid metabolism,amino acid metabolism,and energy metabolism.The results of this experiment can provide some references for the efficacy and clinical application of AEE in animals.
6.Analysis on the knowledge of prevention and control and its influencing factors among high-risk occupational groups in key areas of brucellosis in China
Zhe WANG ; Shenghong LIN ; Xinrong LIU ; Aizhi YU ; Aishan MUHETA ; Bayidaolieti JIEENSI ; Ruiqing LI ; Xinwang LIANG ; Biqiao HOU ; Yifei WANG ; Caixiong LIU ; Cuihong ZHANG ; Liping WANG
Chinese Journal of Endemiology 2024;43(10):840-846
Objective:To understand the current status of knowledge of brucellosis prevention and control among occupational groups at high-risk of brucellosis, and to provide a scientific basis for assessing the effectiveness of brucellosis prevention and control in China.Methods:A total of four counties in Shanxi Province and Xinjiang Uygur Autonomous Region were selected as survey counties from 2019 to 2020, and 600 people from the occupational groups at high-risk of brucellosis in each survey county were selected as survey respondents, and basic information and knowledge of prevention and treatment were collected through questionnaires. Single-factor and multi-factor logistic regression models were used to analyze the factors affecting the population's knowledge of prevention and treatment.Results:A total of 2 411 people participated in the survey and 2 384 valid questionnaires were obtained, including 1 405 males and 979 females, with the youngest age being 18 years old, the oldest being 91 years old, and the median being 57 years old. The overall knowledge of brucellosis prevention and control was 17.74% (423/2 384). The knowledge rate was lower among people over 60 years old, farmers, and people with less than elementary school education (13.99%, 14.50%, and 13.78%), and higher among women, herders, and people with elementary school education (20.02%, 36.33%, and 19.58%); the knowledge rate was lower in Hunyuan County (0.51%), and the differences in overall knowledge rates by age, occupation, education level, and region were statistically significant (χ 2 = 18.25, 87.18, 11.05, 197.43, P < 0.001). Multi-factor logistic regression analysis showed that gender, occupation, literacy and region were associated with knowledge of prevention and treatment ( P < 0.05). Conclusions:The overall knowledge of prevention and treatment among high-risk occupational groups in the key areas of China's brucellosis prevention and treatment program is low, with a large gap with the goals of the national brucellosis prevention and treatment program, and gender, occupation, literacy level, and region are the influencing factors of the knowledge of prevention and treatment. There is an urgent need to carry out a variety of health education activities for high-risk occupational groups and to strengthen the exchange of experience on brucellosis prevention and treatment between regions.
7.Enthesitis in patients with psoriatic arthritis: A nationwide data from the Chinese Registry of Psoriatic Arthritis (CREPAR).
Fan YANG ; Chaofan LU ; Huilan LIU ; Lei DOU ; Yanhong WANG ; Hongbin LI ; Xinwang DUAN ; Lijun WU ; Yongfu WANG ; Xiuying ZHANG ; Jian XU ; Jinmei SU ; Dong XU ; Jiuliang ZHAO ; Qingjun WU ; Mengtao LI ; Xiaomei LENG ; Xiaofeng ZENG
Chinese Medical Journal 2023;136(8):951-958
BACKGROUND:
The clinical features of enthesitis in patients with psoriatic arthritis (PsA) have been reported in some Western countries, but data in China are very limited. This study aimed to describe the characteristics of enthesitis in Chinese patients with PsA and compared them with those in other cohorts.
METHODS:
Patients with PsA enrolled in the Chinese Registry of Psoriatic Arthritis (CREPAR) (December 2018 to June 2021) were included. Data including demographics, clinical characteristics, disease activity measures, and treatment were collected at enrollment. Enthesitis was assessed by the Spondyloarthritis Research Consortium of Canada (SPARCC), Maastricht ankylosing spondylitis enthesitis score (MASES), and Leeds enthesitis index (LEI) indices. A multivariable logistic model was used to identify factors related to enthesitis. We also compared our results with those of other cohorts.
RESULTS:
In total, 1074 PsA patients were included, 308 (28.7%) of whom had enthesitis. The average number of enthesitis was 3.3 ± 2.8 (range: 1.0-18.0). More than half of the patients (165, 53.6%) had one or two tender entheseal sites. Patients with enthesitis had an earlier age of onset for both psoriasis and arthritis, reported a higher proportion of PsA duration over 5 years, and had a higher percentage of axial involvement and greater disease activity. Multivariable logistic regression showed that axial involvement (odds ratio [OR] 2.21, 95% confidence interval [CI], 1.59-3.08; P <0.001), psoriasis area and severity index (PASI) (OR: 1.03, 95% CI: 1.01-1.04; P = 0.002), and disease activity score 28-C reactive protein (DAS28-CRP) (OR: 1.25, 95% CI: 1.01-1.55; P = 0.037) were associated with enthesitis. Compared with the results of other studies, Chinese patients with enthesitis had a younger age, lower body mass index (BMI), a higher rate of positive human leukocyte antigen (HLA)-B27, more frequent dactylitis, and a higher proportion of conventional synthetic disease-modifying antirheumatic drugs' (csDMARDs) use.
CONCLUSIONS
Enthesitis is a common condition among Chinese patients with PsA. It is important to evaluate entheses in both peripheral and axial sites.
Humans
;
Arthritis, Psoriatic/drug therapy*
;
East Asian People
;
Enthesopathy/complications*
;
Registries
;
Severity of Illness Index
;
Spondylarthritis/epidemiology*
8.Sex differences in systemic lupus erythematosus (SLE): an inception cohort of the Chinese SLE Treatment and Research Group (CSTAR) registry XVII.
Yinli GUI ; Wei BAI ; Jian XU ; Xinwang DUAN ; Feng ZHAN ; Chen ZHAO ; Zhenyu JIANG ; Zhijun LI ; Lijun WU ; Shengyun LIU ; Min YANG ; Wei WEI ; Ziqian WANG ; Jiuliang ZHAO ; Qian WANG ; Xiaomei LENG ; Xinping TIAN ; Mengtao LI ; Yan ZHAO ; Xiaofeng ZENG
Chinese Medical Journal 2022;135(18):2191-2199
BACKGROUND:
The onset and clinical presentation of systemic lupus erythematosus (SLE) are sex-related. Few studies have investigated the distinctions in clinical characteristics and treatment preferences in male and female SLE patients in the initial cohort. This study aimed to improve the understanding of Chinese SLE patients by characterizing the different sexes of SLE patients in the inception cohort.
METHODS:
Based on the initial patient cohort established by the Chinese SLE Treatment and Research Group, a total of 8713 patients (795 men and 7918 women) with newly diagnosed SLE were enrolled between April 2009 and March 2021. Of these, 2900 patients (347 men and 2553 women) were eligible for lupus nephritis (LN). A cross-sectional analysis of the baseline demographic characteristics, clinical manifestations, laboratory parameters, organ damage, initial treatment regimens, and renal pathology classification was performed according to sex.
RESULTS:
In the SLE group, as compared to female patients, male patients had a later age of onset (male vs. female: 37.0 ± 15.8 years vs. 35.1 ± 13.7 years, P = 0.006) and a higher SLE International Collaborative Clinic/American College of Rheumatology damage index score (male vs. female: 0.47 ± 1.13 vs. 0.34 ± 0.81, P = 0.015), LN (male vs. female: 43.6% vs. 32.2%, P < 0.001), fever (male vs. female: 18.0% vs. 14.6%, P = 0.010), thrombocytopenia (male vs. female: 21.4% vs. 18.5%, P = 0.050), serositis (male vs. female: 14.7% vs. 11.7%, P = 0.013), renal damage (male vs. female: 11.1% vs. 7.4%, P < 0.001), and treatment with cyclophosphamide (CYC) (P < 0.001). The frequency of leukopenia (male vs. female: 20.5% vs. 25.4%, P = 0.002) and arthritis (male vs. female: 22.0% vs. 29.9%, P < 0.001) was less in male patients with SLE. In LN, no differences were observed in disease duration, SLE Disease Activity Index score, renal biopsy pathological typing, or 24-h urine protein quantification among the sexes. In comparisons with female patients with LN, male patients had later onset ages (P = 0.026), high serum creatinine (P < 0.001), higher end-stage renal failure rates (P = 0.002), musculoskeletal damage (P = 0.023), cardiovascular impairment (P = 0.009), and CYC use (P = 0.001); while leukopenia (P = 0.017), arthritis (P = 0.014), and mycophenolate usage (P = 0.013) rates were lower.
CONCLUSIONS
Male SLE patients had more severe organ damage and a higher LN incidence compared with female SLE patients; therefore, they may require more aggressive initial treatment compared to female patients.
Humans
;
Female
;
Male
;
Cross-Sectional Studies
;
Sex Characteristics
;
East Asian People
;
Severity of Illness Index
;
Lupus Erythematosus, Systemic/diagnosis*
;
Lupus Nephritis/pathology*
;
Registries
;
Cyclophosphamide/therapeutic use*
;
Thrombocytopenia
;
Leukopenia/drug therapy*
;
Arthritis
9.Analysis of delayed cerebral ischemia after coiling and clipping of intracranial aneurysms
Pengran LIU ; Zhangning JIN ; Xinwang CAI ; Zhen ZHANG ; Nannan GAO ; Zhe WANG ; Xinyu YANG
Tianjin Medical Journal 2017;45(2):176-179
Objective To compare and analyze the occurrence of delayed cerebral ischemia(DCI)after coiling and clipping of intracranial aneurysms, and explore the risk factors of DCI. Methods A total of 236 patients with aneurysms diagnosed by CT angiography (CTA) or digital subtraction angiography (DSA) in Department of Neurosurgery, Tianjin Medical University General Hospital were enrolled in this study from March 2011 to May 2014. Patients were divided into clipping group(n=135) and coiling group(n=101). The clinical characteristics were compared between two groups, including gender, age, medical history, GCS score, Hunt-Hess grade, Fisher grade, WFNS grade, aneurysm location, prognosis and incidence of DCI. Risk factors for DCI were investigated by Logistic regression analysis. Results DCI was occurred in 36 patients (26.7%) underwent clipping operation while in 11 patients (10.9%) underwent coiling operation. The incidence was significantly higher in clipping group compared with that of coiling group (P <0.01). The patients were followed up for 6 months. The poor prognosis rates were 17.0%and 25.7%in clipping group and coiling group, respectively (P>0.01). The overall mortality was 11.0%, the former had a lower mortality rate (5.9% vs. 17.8%, P <0.01). According to Logistic regression analysis, Fisher Grade 3-4, postoperative pulmonary infection and surgical procedure were independent risk factors for DCI (P<0.01). Conclusion DCI is one of the most significant factors for high fatality and morbidity of postoperative aneurysm patients. There is a low occurrence of DCI after coiling compared with that of clipping. If we pay more attention to risk factors associated with the DCI, it will improve the prognosis of postoperative aneurysm patients greatly.
10.Clinical features of HLA-B27 positive and negative patients with axial spondyloarthritis
Shaoyuan MAO ; Xiuling ZHANG ; Jingjing SHANG ; Guixiang ZOU ; Nian LIU ; Xinwang. DUAN
The Journal of Practical Medicine 2017;33(12):1992-1995
Objective To investigate the effects of HLA-B27 in disease activity and the clinical features of axial spondyloarthritis(SpA). Methods Clinical data of 112 patients with axial SpA was collected and studied prospectively. Clinical manifestations and laboratory examination results of 82 HLA-B27 positive and 30 HLA-B27 negative patients with axial SpA were analyzed. Data source was from Chinese Rheumatism Data Center. Results (1)The average age of onset of HLA-B27 negative patients was significantly later than that of the positive patients , and there was no significant difference in the course of disease and the proportion of male and female patients. (2)The ratio of severe lesion of hip ,peripheral arthritis ,attachment inflammation and systemic symptoms of HLA-B27 negative group were significantly lower than those of HLA-B27 positive group. Familial aggregation phenomenon,uveitis and spine radiology changes in two groups had no significant difference.(3)The changes of disease activity index including erythrocyte sedimentation rate and C-reactive protein increased in HLA-B 27 negative group was significantly lower than those in HLA-B27 positive group. Conclusion There is strong correlation between axial SpA and HLA-B27. The average age of onset of HLA-B27 negative patients was significantly later than that of the positive patients. HLA-B27 negative patients manifested severe symptoms and worse prognosis.

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