Objective: To explore the relation between platelet-to-lymphocyte ratio (PLR) or neutrophil-to-lymphocyte ratio (NLR) with disease activity in Takayasu arteritis (TA) patients. Methods: Present retrospective study involved 289 patients with TA, who were hospitalized in our department between January 2010 and October 2017, and 280 age and gender matched healthy controls,who underwent thealth examination in our health examination center during the same period (control group). TA patients were further divided into active and inactive groups (180 and 109 cases respectively) according to Kerr scores. The clinical data were compared between groups. Pearson correlation analysis was used to evaluate the relationship between PLR or NLR and disease activity (Kerr score or C-reactive protein or erythrocyte sedimentation rate). Receiver operating characteristic (ROC) curve was employed to judge the cut-off value of disease activity for TA patients. Results: PLR and NLR were significantly higher in TA group than in control group(137.33 (97.38, 193.37) vs. 120.55 (96.86, 144.60) and 2.38 (1.76, 3.57) vs. 1.66 (1.35, 2.08) , respectively, all P<0.001). PLR and NLR were significantly higher in active TA group than in inactive TA group (163.43 (123.64, 224.15) vs. 110.53 (84.22, 147.24) and 2.59 (1.96, 3.94) vs. 1.95 (1.53, 2.86) respectively, all P<0.001). PLR and NLR of active group were significantly decreased after 6 months treatment (164.05 (123.29, 226.29) vs. 104.67 (77.22, 138.43) and 2.58 (1.96, 3.91) vs. 2.15 (1.67, 2.60) respectively, all P<0.001). PLR was positively correlated with Kerr score (r=0.439, P<0.001), C-reactive protein (r=0.328, P<0.001) and erythrocyte sedimentation rate (r=0.410, P<0.001). NLR also exhibited a positive relationship with Kerr score (r=0.235, P<0.001), C-reactive protein (r=0.169, P=0.005) and erythrocyte sedimentation rate (r=0.123, P=0.037). A PLR level of 176.709 was shown to be the best predictive cut-off value for TA disease activity (sensitivity 44.6%, specificity 93.0%, and area under the curve=0.766).A NLR level of 2.128 was shown to be the best predictive cut-off value for TA disease activity (sensitivity 70.9%, specificity 47.7%, and area under the curve=0.691). Conclusion PLR and NLR are useful markers for predicting disease activity of TA patients.

Objective To assess pregnancy outcome and pregnancy related concerns in Takayasu arteritis (TA) patients.Methods We analyzed 68 female patients with TA retrospectively from Xijing hospital.Data on the number of pregnancies,births and pregnancy outcomes before and after disease onset were retrieved from medical charts,patient questionnaires and the department of Obstetrics in Xijing Hospital.Data on pregnancy related concerns were gathered from patient questionnaires.Results Altogether,68 women in the TA study cohort had 106 pregnancies,73 (in 41 patients) before disease onset and 33 (in 28 patients) after disease onset.There were no difference in the frequencies of miscarriages,induced abortions and maternal complications before and after TA onset.Pregnancy related hypertension was seen in 4.7％ of the TA patients compared to 2.0％ (x2=1.238,P＞0.05) of the reference cohort from the department of Obstetrics in Xijing Hospital and preeclampsia/eclampsia in 4.7％ of the TA patients compared to 2.8％ of the reference cohort (x2=1.835,P＞0.05).The mean gestational age at delivery in pregnancies after TA onset was (37±6) weeks compared to (39±4) weeks in the reference cohort (x2=14.665,P＜0.01).Caesarian sections were more frequent in deliveries after TA onset (36％) than in the reference cohort (15％) (x2=13.322,P＜0.01).86％ of the TA patients had pregnancy related concerns.Of these concerns,72％ was about passing the disease to offsprings.Conclusion In this population based TA cohort,the maternal and fetal outcomes are favorable.Pregnancy related concerns are very popular in TAK patients.