AB0791 THE DIAGNOSIS VALUE OF SYNOVIAL FLUID LYMPHOCYTE IN GOUT PATIENTS

Background:

Synovial fluid cell counts have long been recognised to have utility in the diagnosis and management of arthritis. Few studies have explained the diagnosis value of synovial fluid cell counts in gout patients.

Objectives:

The study aims to investigate the diagnosis value of synovial fluid cell counts in gout patients.

Methods:

A total of 185 gout, 64 rheumatoid arthritis(RA), 26 axial spondyloarthritis(axSpA) and 24 osteoarthritis(OA) patients were included into the study. According to serum uric acid(sUA) level on attack, gout patients were divided into normal sUA gout patients and high sUA gout patients. The laboratory data was recorded and ROC curve was performed.

Results:

The synovial fluid WBC, PBMC, monocyte, PMN and neutrophil in gout patients were higher than OA patients (P<0.05). The synovial fluid PBMC and lymphocyte in gout patients were lower than RA and axSpA patients (P<0.05). Compared with RA, axSpA and OA patients, ROC curve showed that the AUC value of lymphocyte and sUA for gout were 0.728 and 0.881, which were higher than other variables. The optimal cut off value of lymphocyte for gout was 1.362, with sensitivity of 83.3% and specificity of 60.6%. The AUC value of lymphocyte and sUA for normal sUA gout patients were 0.694 and 0.643, which were higher than other variables. The optimal cut off value of lymphocyte for normal sUA gout patients was 1.362, with sensitivity of 81.6% and specificity of 60.6%.

Conclusion:

Synovial fluid cell counts of gout patients were different from RA, axSpA, and OA patients. Synovial fluid lymphocyte had a higher diagnosis value for gout.

References:

[1]Scanu A, Oliviero F, Ramonda R, et al. Cytokine levels in human synovial fluid during the different stages of acute gout: role of transforming growth factor β1 in the resolution phase. Ann Rheum Dis. 2012, 71(4): 621-4.

Table 1.

Basic characteristics of the participants

Gout(n=185)RA(n=64)axSpA (n=26)OA(n=24)P valueAge (years)48.58±15.5856.19±12.39*32.96±15.19*#69.63±12.43*#&<0.001Gender (male/female)176/911/5321/58/16<0.001WBC(×109/L)18.58±22.9422.24±20.8715.52±15.033.03±5.59*#&0.002PBMC(×109/L)1.85±1.993.68±2.43*3.85±3.34*0.74±1.01*#&<0.001Monocyte(×109/L)1.02±1.591.24±1.111.34±1.520.29±0.37*#&0.030PMN(×109/L)16.77±21.5118.57±19.3215.75±24.172.30±5.00*#&0.008Lymphocyte (×109/L)0.80±0.832.43±1.76*2.50±2.04*0.45±0.80#&<0.001Eosinophil (×109/L)1.32±3.750.56±0.930.11±0.170.49±1.850.098Neutrophil (×109/L)16.42±21.1618.82±20.8911.13±14.232.23±4.87*#0.003UA(μM)497.92±132.24299.31±97.91*351.81±118.93*333.38±75.19*<0.001ESR(mm/h)61.02±37.6882.42±32.87*68.12±36.2542.34±35.91*#&<0.001CRP(mg/L)56.52±45.6444.01±35.27*65.49±39.85#22.11±40.65*#&<0.001

*P<0.05 vs gout group, #P<0.05 vs RA group, &P<0.05 vs axSpA group

Disclosure of Interests:

None declared

POS0133 MONOSODIUM URATE CRYSTALS REDUCE HUMAN LIGAMENT CELLS VIABILITY THROUGH INCREASE OF ROS PRODUCTION

Background:

Ligament destruction is a frequent complication of gout and is strongly associated with tophi. Ligament fibroblasts are important cellular mediators of ligament remodeling. None of study has paid attention to the effects of monosodium urate (MSU) crystals on ligament fibroblasts.

Objectives:

The study aims to investigate the effects and mechanism of MSU crystals on ligament fibroblasts.

Methods:

MSU crystals were added to human ligament fibroblasts(HLFs) cultures or primary ligament cells cultures. Cell counting kit-8 (CCK-8) assay, cell migration assay, Annexin V-FITC/PI assay were conducted. Reactive Oxygen Species(ROS) was tested by ROS Assay Kit.

Results:

The higher concentrations of MSU crystals (0.5-1mg/mL) reduced the viability of HLFs or primary ligament cells after 24 h as assessed by CCK8 assays, with a further reduction in viability observed at the 48 h time point. When observed under light microscopy, HLFs cultured with MSU crystals (0.5mg/mL) appeared unhealthy with fewer cells present. The cell migration ability of HLFs was decreased significantly on MSU crystals (0.5mg/mL). According to the result of Annexin V-FITC/PI assay, the survival rate of HLFs on MSU crystals (0.5mg/mL) was lower than that of 0.25mg/ml and 0 mg/ml at 72h. ROS assay results showed that the production of ROS increased as the concentrations of MSU crystals increased.

Conclusion:

MSU crystals inhibit human ligament cells viability through the increase of ROS production. It may contribute to disordered ligament remodeling in gout patients with ligament destruction.

References:

[1]Ashika Chhana, et al. Monosodium urate crystals reduce osteocyte viability and indirectly promote a shift in osteocyte function towards a proinflammatory and proresorptive state. Arthritis Res Ther. 2018, 20(1): 208.

Figure 1.

MSU crystals reduce human ligament fibroblasts and primary human ligament cells viability over time. A: CCK-8 assay; B: Observation of HLFs morphology; C: Annexin V-FITC/PI assay.

Disclosure of Interests:

None declared

AB0642 CLINICAL CHARACTERISTICS AND FACTORS ASSOCIATED WITH BONE EROSION IN GOUT PATIENTS WITH TOPHI

Background:

Bone erosion is a frequent complication of gout patients with tophi and can lead to joint damage, deformity and musculoskeletal disability. Few studies have focused on clinical characteristics and factors associated with bone erosion in gout patients with tophi.

Objectives:

The aim of this study was to describe clinical characteristics of bone erosion in gout patients with tophi.

Methods:

Bone erosion was detected by X-ray. Gout patients with tophi were divided into bone erosion group and non bone erosion group. The clinical characteristics were recorded. Comparison of clinical characteristics and risk factors for bone erosion were analyzed between two groups. Multivariate logistic regression analysis was conducted.

Results:

A total of 171 gout patients with tophi were enrolled, 121 patients with bone erosion and 50 patients without bone erosion. Bone erosion group were older, with prolonged duration with gout and tophi, higher levels of serum creatinine, lower levels of glomerular filtration rate (GFR), C-reactive protein and BMI. In univariate regression analysis, age, gout duration, tophi duration, GFR were associated with bone erosion. In multivariable logistic regression analysis, tophi duration was independently associated with bone erosion.

Conclusion:

Gout patients with bone erosion present different clinical characteristics compared with those without bone erosion. Tophi duration was strongly associated with bone erosion in patients with gout.

Table 1.

Comparison of clinical characteristics between bone erosion patients and non bone erosion patients.

Non Bone erosionBone erosionP ValueN(male)50(47)121(118)0.255Age(year)45.82±14.1553.74±14.880.002BMI (kg/m2)26.01±4.5824.18±4.720.027WBC(109/mL)9.73±3.4011.37±13.260.404PLT(109/mL)329.86±96.22328.31±124.020.938HGB(g/L)86.58±63.78102.75±51.160.201ALT(U/L)37.74 ±26.5634.26±35.260.561sUA(umol/L)540.16±121.79539.00±121.460.962sCr(umol/L)111.47±25.26135.77±52.43<0.001GFR(ml/min/1.73m2)74.01±27.9456.68±22.840.003ESR(mm/h)61.78±37.3253.08±36.700.181CRP(mg/L)60.00±58.2636.45±42.620.014Gout duration (year)9.22±5.4612.63±7.590.001Tophi duration(year)3.77±3.226.64±4.810.001Hypertension, n17520.277Diabetes, n9120.143Smoking history, n20550.513Drinking history, n14370.737Ulceration, n10350.228

Disclosure of Interests:

None declared.

AB0645 CLINCAL CHARACTERISTICS OF GOUT PATIENTS WITH RENAL CYSTS

Background:

Gout is a crystal-related arthropathy caused by monosodium urate deposition, which is a common and treatable form of inflammatory arthritis and becoming more prevalent[1]. A few studies have found that gout patients have an increased prevalence of simple renal cysts[2, 3]. The relationship between gout and renal cysts is still insufficient.

Objectives:

Compare the difference between gout with renal cyst and without renal cyst.

Methods:

We retrospectively collected data on 200 gout patients. The data includes age, gender, uric acid, creatinine, glomerular filtration rate, 24-hour urine collection, and whether they have kidney stones, renal cysts, coronary heart disease, hypertension, and diabetes. Chi-square and exact Fisher’s tests were utilized, while continuous variables were assessed by Student’s t-test. A P value of less than 0.05 was considered statistically significant.

Results:

Of the 200 gout patients, 56 have kidney cysts(28%). In gout patients who had a renal cyst, were significantly older than patients without renal cysts (59.14 vs. 46.87, P = 0.000), more number of people suffering from coronary heart disease (7 vs. 5, P = 0.016). The glomerular filtration rate was lower (58.5 vs. 71.6, P = 0.000), with lower urinary creatinine, uric acid, and urinary potassium.

Conclusion:

Gout patients with and without simple renal cysts have significant differences in age, hypertension, cardiovascular disease, GFR, serum creatinine, urine creatinine, and urine potassium.

References:

[1]N. Dalbeth, T.R. Merriman, L.K. Stamp, Gout, Lancet 388(10055) (2016) 2039-2052.

[2]E.M. Hasegawa, R. Fuller, M.C. Chammas, F.M. de Mello, C. Goldenstein-Schainberg, Increased prevalence of simple renal cysts in patients with gout, Rheumatol Int 33(2) (2013) 413-6.

[3]Y. Han, M. Zhang, J. Lu, L. Zhang, J. Han, F. Zhao, H. Chen, Y. Bao, W. Jia, Hyperuricemia and overexcretion of uric acid increase the risk of simple renal cysts in type 2 diabetes, Sci Rep 7(1) (2017) 3802.

Table 1.

Clinical characteristics of gout patients

Renal cyst(n=56)Without Renal cyst(n=144)PDisease duration, (month)98.7(±64.1)91.2(±67.0)0.468Age, (year)59.14(±14.3)46.78(±15.9)0.000Gender, n(F/M)7/4911/1330.281Smoking history, n(%)18(32.1%)47(32.6%)0.946Drinking history, n(%)10(17.9%)32(22.2%)0.496Hypertension, n(%)31(55.3%)49(34.0%)0.006Diabetes, n(%)9(16.1%)15(10.4%)0.269CVDs, n(%)7(12.5%)5(3.4%)0.016Nephrolithiasis, n(%)14(25%)43(29.9%)0.494UA, (μmol/L)494.8(±158.0)544.3(±121.0)0.037Serum creatinine, (μmol/L)139.4(±57.2)116.5(±35.45)0.007GFR, (ml/L)58.5(±22.5)71.6(±22.3)0.000FEUA, (%)7.0(±3.2)6.0(±3.2)0.052Urine creatinine, (μmol/L)4687.09(±1832.9)5565.2(±2599.8)0.008Urine Uric acid, (μmol/L)1204.9(±772.0)1542.1(±1048.5)0.030Urine sodium, (mmol)132.1(±68.7)131.2(±76.6)0.939Urine potassium, (mmol)25.6(±12.5)31.8(±14.2)0.005

Disclosure of Interests:

None declared.

[Prognosis and related risk factors of acute respiratory distress syndrome in elder patients]

Objective: To study the risk factors associated with the hospital survival rate of elder patients with acute respiratory distress syndrome (ARDS) in Medical/Respiratory Intensive Care Units (MICUs/RICUs) by evaluating the prognosis, and therefore to provide insight into patient treatment strategy. Methods: Twenty MICUs/RICUs of 19 general hospitals in mainland China participated in the multicenter prospective cohort study carried out from Mar 1^st, 2016 to Feb 28^th, 2018. Patients who met the criteria of Berlin ARDS and older than 65 years were recruited. Baseline data, risk factors of ARDS, ventilator setup and prognosis data were collected from all patients. Univariant and multivariant regression analysis were conducted to analyze the factors associated with the prognosis. Results: 170 elder ARDS patients (age≥65 years) met the Berlin ARDS criteria, among whom 8.8% (15/170), 42.9% (73/170) and 48.2% (82/170) patients had mild, moderate and severe ARDS, respectively. The most common predisposing factor for elder ARDS was pneumonia, which was present in 134 patients (78.8%). 37.6% (64/170) patients were treated with noninvasive mechanical ventilation (NIV), but 43.8% (28/64) cases experienced treatment failure. 76.5% (130/170) patients were treated with invasive mechanical ventilation. All patients 80 years or older were given invasive mechanical ventilation. 51.8% (88/170) cases had complications of non-pulmonary organ failure. 61.8% (105/170) patients deceased during hospital stay. Multivariant logistic analysis showed that the independent risk factors for hospital survival rate in elder patients with ARDS were SOFA score (P=0.030, RR=0.725, 95% CI 0.543-0.969), oxygen index after 24 hours of ARDS diagnosis (P=0.030, RR=0.196, 95% CI 0.045-0.853), accumulated fluid balance within 7 days after diagnosis of ARDS (P=0.026, RR=1.000, 95% CI 1.000-1.000) and shock (P=0.034, RR=0.140, 95% CI 0.023-0.863). Conclusion: Among 20 ICUs, the high mortality rate of elder patients with ARDS was correlated with higher 24 hour SOFA score, lower 24 hour oxygen index after ARDS diagnosis, more positive fluid balance within 7 days and concomitant shock. The conservative fluid strategy within 7 days of ARDS diagnosis may benefit the elder ARDS patients.

Elliptic Flow of Electrons from Beauty-Hadron Decays in Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV

The elliptic flow of electrons from beauty hadron decays at midrapidity (|y|<0.8) is measured in Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV with the ALICE detector at the LHC. The azimuthal distribution of the particles produced in the collisions can be parametrized with a Fourier expansion, in which the second harmonic coefficient represents the elliptic flow, v_{2}. The v_{2} coefficient of electrons from beauty hadron decays is measured for the first time in the transverse momentum (p_{T}) range 1.3-6  GeV/c in the centrality class 30%-50%. The measurement of electrons from beauty-hadron decays exploits their larger mean proper decay length cτ≈500  μm compared to that of charm hadrons and most of the other background sources. The v_{2} of electrons from beauty hadron decays at midrapidity is found to be positive with a significance of 3.75  σ. The results provide insights into the degree of thermalization of beauty quarks in the medium. A model assuming full thermalization of beauty quarks is strongly disfavored by the measurement at high p_{T}, but is in agreement with the results at low p_{T}. Transport models including substantial interactions of beauty quarks with an expanding strongly interacting medium describe the measurement within uncertainties.

Hsa_circRNA_101036 acts as tumor-suppressor in oral squamous cell carcinoma cells via inducing endoplasmic reticulum stress

OBJECTIVE

Endoplasmic reticulum (ER) stress has an effect on cancer cell proliferation and survival. TMTC1 has been reported to be involved in cell proliferation and inflammation, and development of ER. Hsa_circRNA_101036 is an exon circRNA formed by splicing of TMTC1 mRNA precursor. This study intends to explore the effect of hsa_circRNA_101036 on the malignant behavior of oral squamous cell carcinoma through endoplasmic reticulum stress.

MATERIALS AND METHODS

We firstly evaluated the levels of Hsa_circRNA_101036 in human oral mucous fibroblasts (hOMF), and in several OSCC cell lines, including FaDu, OECM1, SAS, HSC3. Then, we studied the effects of overexpression of Hsa_circRNA_101036 on the cell proliferation, apoptosis, invasion, migration, and cytokine release in OSCC cells. Finally, we evaluated the levels of CHOP that are critical in ER and the ROS levels in OSCC cells.

RESULTS

We found that compared with hOMF, a significantly lower mRNA expression of Hsa_circRNA_101036 was found in OECM1 and HSC3 cells. In OECM1 and HSC3 cells, with overexpression of Hsa_circRNA_101036, a significant decrease in cell proliferation, apoptosis, invasion, migration, and cytokine release was found. A significantly increased ROS, as well as increased protein level of CHOP, P38 and Bcl-2, was found in cells with Hsa_circRNA_101036 overexpression.

CONCLUSIONS

This study indicated that Hsa_circRNA_101036 may acts as a tumor suppressor in OSCC via regulating the ER in cancer cells.

Microsatellite markers reveal polymorphisms at the 3′ untranslated region of the SLC11A1 gene in Zhongdian Yellow cattle (Bos taurus)

Solute carrier family 11-member A1 (SLC11A1) gene encodes natural macrophage resistance-associated protein which regulates activity of macrophages against intracellular pathogens. The objective of this study was to study the polymorphism in the microsatellites present at 3′ untranslated region (UTR) of the SLC11A1 gene in 113 Zhongdian Yellow cattle (Bos taurus). Using DNA bi-directional sequencing, we detected seven alleles (GT10–16) for the first microsatellite (MS1), five alleles (GT12–16) for MS2, and four alleles (GT4–7) for MS3. MS3 is studied for the first time and revealed four novel variants (alleles GT4–7). Alleles GT12 (45.1%), GT13 (59.3%), and GT5 (85.4%) were the most frequent alleles at MS1, MS2, and MS3, respectively, Genotypes G12/12, G13/13, and G5/5 had the highest frequency 0.239, 0.540, and 0.743 at MS1, MS2, and MS3, respectively. Haplotypic data revealed that GT12/GT13 was the most frequent haplotype observed followed by GT12/14 haplotype. Three nucleotide variations were observed in MS1 and MS2. Comparative analysis of GT12/GT12 and GT13/GT13 genotype with other bovine genotypes showed significant difference (P > 0.05). Our results suggest that the homozygous genotypes GT12/GT12 and GT13/GT13 in Zhongdian Yellow cattle might be related to disease resistance. The findings reported in this study would be helpful in cattle breeding programs.

Massively Multiplexed Electrohydrodynamic Tip Streaming from a Thin Disc

We report an experimental study on the multiple tip streaming enabled by an externally wetted thin disc in electric fields. The electrohydrodynamic stress acting on the liquid-air interface triggers an interfacial instability that develops into multiple radial liquid ligaments at the rim of the disc. The scaling law suggests that the wave number is inversely proportional to the square of the peak electric field at the rim, which is determined by the combined thickness of the disc and the attached liquid layer. The thin disc edge effectively intensifies the electric field, which in turn leads to spacing between ligaments as short as 30  μm for ethanol, generating over 1000 cone jets for a 1 cm diam thin disc.

[Application value of urinary IGFBP7 and TIMP-2 in acute kidney injury with decompensated hepatitis B virus-related liver cirrhosis]

Objective: To investigate the application value of new urinary biomarkers insulin-like growth factor binding protein 7 (IGFBP7) and tissue matrix metalloproteinase inhibitor-2 (TIMP-2) in acute kidney injury with decompensated hepatitis B virus-related liver cirrhosis. Methods: 45 newly hospitalized cases with decompensated hepatitis B virus-related liver cirrhosis were selected. Among them, 19 cases were combined with AKI on admission (cirrhosis-AKI group), 26 cases without AKI (cirrhosis-non-AKI group), and 12 healthy cases (normal control group). First-morning urine samples were collected and IGFBP7 and TIMP-2 were detected by enzyme-linked immunosorbent assay (ELISA). Urinary IGFBP7 and serum creatinine (SCr) were dynamically monitored after hospitalization in cirrhosis-non-AKI group. Normally distributed measurement data were compared by t-test, and non-normally distributed measurement data were compared by rank sum test. The receiver operating characteristic (ROC) curve and area under the curve (AUC) were used to evaluate the diagnostic accuracy of the indicators. Results: Urinary IGFBP7, IGFBP7 with TIMP-2 (IGFBP7×TIMP-2) in cirrhosis-AKI group (n = 19) were equally higher than that of the cirrhosis-non-AKI group (P < 0.05). Urinary IGFBP7, TIMP-2 and IGFBP7×TIMP-2 in cirrhosis-AKI group or cirrhosis-non-AKI group were significantly higher than those of the normal control group (P < 0.01). The AUC of urinary IGFBP7 and urinary IGFBP7×TIMP-2 for diagnosis of AKI were 0.703 (95% CI 0.547-0.860) and 0.700 (95% CI 0.541-0.859), respectively. In the liver cirrhosis-non-AKI group (n = 26), 5 cases of AKI were newly diagnosed according to the changes in SCr during hospitalization (progressive group). Urinary IGFBP7 was significantly increased 2 days before the diagnosis of AKI. The concentration of urinary IGFBP7 at admission in the progressive group (n = 5) was higher than that of the non-progressive group (n = 21) (P < 0.05). Conclusion: Urinary IGFBP7 and TIMP-2 concentrations were significantly increased in patients with decompensated hepatitis B virus-related liver cirrhosis. When AKI occurred, urinary IGFBP7 and IGFBP7×TIMP-2 was further increased. Urinary IGFBP7 is valuable for early AKI diagnosis, and may play a role in predicting AKI occurrence.

Measurement of the Low-Energy Antideuteron Inelastic Cross Section

In this Letter, we report the first measurement of the inelastic cross section for antideuteron-nucleus interactions at low particle momenta, covering a range of 0.3≤p<4  GeV/c. The measurement is carried out using p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of sqrt[s_{NN}]=5.02  TeV, recorded with the ALICE detector at the CERN LHC and utilizing the detector material as an absorber for antideuterons and antiprotons. The extracted raw primary antiparticle-to-particle ratios are compared to the results from detailed ALICE simulations based on the geant4 toolkit for the propagation of (anti)particles through the detector material. The analysis of the raw primary (anti)proton spectra serves as a benchmark for this study, since their hadronic interaction cross sections are well constrained experimentally. The first measurement of the inelastic cross section for antideuteron-nucleus interactions averaged over the ALICE detector material with atomic mass numbers ⟨A⟩=17.4 and 31.8 is obtained. The measured inelastic cross section points to a possible excess with respect to the Glauber model parametrization used in geant4 in the lowest momentum interval of 0.3≤p<0.47  GeV/c up to a factor 2.1. This result is relevant for the understanding of antimatter propagation and the contributions to antinuclei production from cosmic ray interactions within the interstellar medium. In addition, the momentum range covered by this measurement is of particular importance to evaluate signal predictions for indirect dark-matter searches.

An emergency strategy for intensive care unit during COVID-19 outbreak in Chongqing, China

OBJECTIVE

Since December 2019, a novel coronavirus disease 2019 (COVID-19) broke out in Wuhan, China, which has rapidly spread from China to at least 200 countries abroad. COVID-19 was issued a global outbreak and pandemic by the World Health Organization with more than 3 million confirmed cases by May 31, 2020. So far more than ten thousand severe and critically ill patients and hospital-related infection with COVID-19 have been reported with more than four thousand deaths in China. There is a great challenge for intensive care units (ICUs) in hospitals.

PATIENTS AND METHODS

The comment mainly focused on admission and discharge criteria, therapy protocol, prevention and control strategies for ICU during COVID-19 outbreak. The emergency strategy for ICU will be helpful for prevention and control of COVID-19 and treatment of critically ill patients with COVID-19.

CONCLUSIONS

Progress in the management of ICU is crucial for a decrease in the mortality of critically ill patients with COVID-19 with the clinical evidence and experience updated.

AB0693 TIM-3-EXPRESSING NEUTROPHILS AS A NOVEL INDICATOR TO ASSESS DISEASE ACTIVITY AND SEVERITY IN ANKYLOSING SPONDYLITIS

Background:

Ankylosing spondylitis (AS) is a type of chronic inflammatory disease that compromises the axial skeleton and sacroiliac joints. Many studies have shown that neutrophils play an important roles in the inflammatory process of AS. However, the immunomodulatory roles and mechanisms of neutrophils in AS are poorly understood. T-cell immunoglobulin and mucin domain-containing protein 3 (Tim-3) has been reported as an important regulatory molecule, expressed and regulated on different innate immune cells, plays a pivotal role in several autoimmunity diseases. Recent study indicates that Tim3 is also expressed on neutrophils. However, the frequency and roles of Tim3-expressing neutrophils in AS was not clear.

Objectives:

In this study, we investigated the expression of Tim3 on neutrophils in AS patients and analyzed the correlation between the level of Tim3-expressing neutrophils and the disease activity of AS.

Methods:

AS Patients were recruited from Guangdong Second Provincial General Hospital (n=49). Age/sex-matched volunteers as Healthy controls (HC) (n=39). The medical history, clinical manifestations, physical examination, laboratory measurements were recorded. The expression of costimulatory molecules including programmed death 1 (PD-1), Tim-3 on neutrophils were determined by flow cytometry. The frequencies of Tim3-expressing neutrophils in AS patients were further analyzed for their correlation with markers of inflammation ESR and CRP, disease activity and severity of AS.

Results:

The expression of Tim3 on neutrophils in patients with AS was increased compared to the HC (Figure 1A). The frequency of Tim3-expressing neutrophils in patients with AS showed an positive correlation with ESR, CRP and ASAS-endorsed disease activity score (ASDAS) (Figure 1B). Moreover, the frequency of Tim3-expressing neutrophils in active patients(ASDAS≥1.3) was increased as compare with the inactive patients (ASDAS<1.3) (Figure 1C).

Conclusion:

Increased Tim-3 expression on neutrophils may be a novel indicator to assess disease activity and severity in AS, which may serves as a negative feedback mechanism preventing potential tissue damage caused by excessive inflammatory responses in AS patients.

References:

[1]Han, G., Chen, G., Shen, B. & Li, Y., Tim-3: an activation marker and activation limiter of innate immune cells.FRONT IMMUNOL4449 (2013).

[2]Vega-Carrascal, I.et al., Galectin-9 signaling through TIM-3 is involved in neutrophil-mediated Gram-negative bacterial killing: an effect abrogated within the cystic fibrosis lung.J IMMUNOL1922418 (2014).

Figure 1.

(A)The expression of Tim3 on neutrophils in AS and HC.(B)The correction between Tim3-expressing neutrophils and ESR,CRP,ASDAS.(C) The expression of Tim3 on neutrophils in active and inactive patients.

Disclosure of Interests:

None declared

AB0047 T-CELL IMMUNOGLOBULIN AND MUCIN DOMAIN–CONTAINING PROTEIN 3 EXPRESSION IN REGULATORY T CELLS OF ANKYLOSING SPONDYLITIS PATIENTS AND THE CORRELATION WITH DISEASE ACTIVITY

Background:

Ankylosing spondylitis (AS) is a chronic inflammatory autoimmune disease. Regulatory T cells have been found in peripheral blood of AS patients. However, there is a controversy regarding the relative number and function of regulatory T cells in AS. T-cell immunoglobulin and mucin domain–containing protein 3 (Tim-3) is a negative immune regulator that participates in immune responses and widely expresses on a variety of immune cells. Many studies have shown that Tim-3 participates in tumors, infections, hematological system diseases and autoimmune diseases (such as systemic lupus erythematosus, rheumatoid arthritis, autoimmune hepatitis, etc). While there has not yet clinical trials with large samples to verify whether or not Tim-3 is involved in the incidence of AS and the relationship between the disease activity of AS and the expression of Tim-3 in regulatory T cells.

Objectives:

The present study aimed to identify the Tim-3 expression in regulatory T cells in AS patients, and the association between Tim-3 and the disease activity of AS.

Methods:

There were 47 patients diagnosed as AS and 51 age- and sex-matched healthy controls (HCs) from Guangdong Second Provincial Central Hospital enrolled in the study. The clinical information of the AS patients was recorded in detail and the disease activity was calculated. The positive expression rates and medium fuorescence intensity (MFI) of Tim-3 in regulatory T cells were examined by fow cytometry. Statistical approaches were used to analyze the experimental data of patients and controls.

Results:

The Treg cells level was significantly decreased in AS patients compared to the healthy controls (5.14±0.27 vs 4.38±0.23, P = 0.032, Fig 1 A). Tim-3 expression in regulatory T cells was lower in AS patients than the HCs (63.29±2.39 vs 52.56±3.49, P = 0.013, Fig1 B). And Tim-3 MFI in regulatory T cells was significantly decreased too(1355.04±171.44 vs 859.19±105.11, P = 0.016, Fig1 C).

The Treg cells ratio negatively correlated with BASDAI (r=-0395, p=0.014) and BASFI (r=-0391, p=0.015) in AS patients. However, the Tim-3 expression in the Treg cells has no correlation with diseases activity in patients.

Conclusion:

According to the test results, we could confirm that regulatory T cells participate in the progression of AS, and it has negative relationship with disease activity. Tim-3 can express in Treg, but whether Tim-3 can be used as a potential target for AS treatment in future need further verified.

Disclosure of Interests:

None declared

Prognostic value of radiologically enlarged lymph nodes in node-negative colon cancer

AIM

Assessment of lymph node (LN) involvement is of crucial importance in the estimation of prognosis and choice of therapeutic options for patients with colon cancer. The relationship between the radiological size of LNs and prognosis in node-negative colon cancer remains uncertain. This study aims to investigate the prognostic impact of radiologically enlarged LNs on the survival of patients with node-negative colon cancer.

METHOD

This retrospective study recruited 395 patients with Stages I and II colon cancer diagnosed between January 2012 and March 2016. Preoperative computed tomography was reviewed for the maximum short-axis diameter of regional LNs, the optimal cutoff value of which was set to 8 mm. The prognostic relevance was analysed in Kaplan-Meier and multivariable Cox proportional hazard regressions.

RESULTS

Patients with tumour in the left colon, TNM Stage II and 12 or more retrieved LNs tended to have radiologically enlarged LNs. Our results suggest that 3-year recurrence-free survival (RFS) and overall survival (OS) were significantly worse in patients with enlarged LNs than those without (RFS 82.8% vs 92.4%, P = 0.026; OS 87.1% vs 95.2%, P = 0.017), which was also confirmed in multivariable analysis [RFS hazard ratio (HR) = 2.192, P = 0.018; OS HR = 3.305, P = 0.010]. Subgroup analysis revealed that in patients with Stage II disease or at least 12 retrieved LNs, radiologically enlarged LN remained an independent predictor of poor RFS and OS.

CONCLUSION

The presence of radiologically enlarged LNs in patients with node-negative colon cancer had an adverse prognosis.

Clinical and genetic analysis of idiopathic normophosphatemic tumoral calcinosis in 19 patients

PURPOSE

Tumoral calcinosis is a rare clinicopathological entity characterized by ectopic soft-tissue calcification, typically periarticular. Normophosphatemic tumoral calcinosis is seldom reported in East Asian populations, and the preoperative diagnosis is often elusive. This study was performed to characterize the clinical profile of normophosphatemic tumoral calcinosis and investigate the presence of the SAMD9 gene mutation.

METHODS

The clinical features, pathological examination findings, and outcomes of 19 subjects were retrospectively reviewed. All patients were analyzed for SAMD9 gene mutation using paraffin-embedded tumoral calcinosis specimens.

RESULTS

Nineteen subjects were analyzed (7 males, 12 females). Their mean age at surgery, mean age at symptom onset, and median disease duration was 51.9 ± 17.3 (range 7-75) years, 49.1 ± 17.2 (range 7-74) years, and 1.3 (interquartile range 0.5-3.0) years, respectively. Lesions were located in the hand in 8 (42.1%) subjects; wrist in 5 (26.3%); shoulder in 2 (10.5%); and hip, knee, buttock, and scrotum in 1 (5.3%) subject each. The lesions in 17 (89.5%) subjects were located around the joints [small joints (hand and wrist) in 13 (68.4%) and large joints (shoulder, hip, and knee) in 4 (21.1%)]. Lesions occurred in the upper limbs in 15 (78.9%) subjects and in the lower limbs in 2 (10.5%). Multiple-lesion involvement (distal right index finger and middle finger) occurred in one (5.3%) subject. Symptoms included pain in 15 (78.9%) subjects, impaired mobility in 5 (26.3%), swelling in 5 (26.3%), numbness in 2 (10.5%), and an asymptomatic mass in 2 (10.5%). The serum inorganic phosphorus concentration was normal in all 19 subjects (mean 1.17 ± 0.15 mmol/L). The serum calcium concentration was normal in 18 subjects and low in 1. The serum alkaline phosphatase concentration was normal in all 19 subjects. Pathological examination indicated multiple nodules of calcified materials that manifested an amorphous or granular blue-purple crystal and were surrounded by proliferation of mononuclear or multinuclear macrophages, osteoclastic-like giant cells, fibroblasts, and chronic inflammatory cells. Notably, different phases of pathological manifestations were observed in the same microscopic field. During follow-up (0.5-65.0 months), no recurrence of tumoral calcinosis was observed in 18 (94.7%) subjects, but 1 subject developed in situ recurrence of an asymptomatic subcutaneous mass after 6 months postoperatively. Genetic analysis in all 19 subjects revealed no SAMD9 gene mutations.

CONCLUSIONS

Most subjects were females and developed calcinosis in adulthood. Small joints (hand and wrist) and the upper limbs were frequently involved. The presence of different phases of pathological features in the same subject suggests that about half of the study participants had been misdiagnosed with another condition (such as gout, osteoarthritis, etc.). Complete surgical excision led to cure without recurrence during follow-up in majority of the study participants.

Optimal cut-points of visceral adipose tissue areas for cardiometabolic risk factors in a Chinese population: a cross-sectional study

AIM

To determine the optimal cut-points of visceral adipose tissue (VAT) areas at different anatomic levels to discriminate participants with cardiometabolic risk factors in a Chinese middle-aged population.

METHODS

A total of 1744 individuals who underwent regular health checks in Nanjing BENQ Medical Center from January 2013 to December 2016 were included in this cross-sectional study. VAT areas were measured by abdominal quantitative computed tomography at the L2/3 intervertebral disk and umbilicus levels. Cardiometabolic risk factors including serum triglycerides, HDL cholesterol levels, plasma glucose and blood pressure were defined using IDF 2005 criteria for metabolic syndrome.

RESULTS

The cut-points for VAT area at the umbilicus level were 111 cm² for men and 96 cm² for women to identify people with one or more cardiometabolic risk factors. For VAT area at the L2/3 level, the optimal cut-points were 142 cm² for men and 115 cm² for women. A VAT area at the L2/3 level of ≥ 142 cm² for men or 115 cm² for women significantly increased the prevalence of hyperglycaemia [odds ratio (OR) 3.18, 95% confidence interval (CI) 2.45-4.13], hypertension (OR 2.81, 95% CI 2.27-3.49) and dyslipidaemia (OR 4.37, 95% CI 3.50-5.45) after adjusting age.

CONCLUSIONS

The optimal cut-points for VAT area at the umbilicus level and L2/3 level were 111 cm² and 142 cm² for men and 96 cm² and 115 cm² for women to identify participants with one or more cardiometabolic risk factors.

Effects of chlorogenic acid-enriched extract from Eucommia ulmoides leaf on performance, meat quality, oxidative stability, and fatty acid profile of meat in heat-stressed broilers

To investigate the effects of chlorogenic acid-enriched extract (CGAE) from Eucommia ulmoides leaf on performance, meat quality, oxidative stability, and fatty acid profile of breast meat in heat-stressed broilers, 400 28-day-old male Ross 308 broilers were randomly assigned into 4 groups with 10 replicates per group (10 broilers per replicate). Broilers in the normal group (NOR) were kept at 22 ± 2°C (24 h/D) and fed the basal diet, and the other 3 groups were treated with cyclic heat (34 ± 2°C from 08:00 to 18:00 and 22 ± 2°C from 18:00 to 08:00) and fed the basal diet supplemented with 0 (HT), 500 (CGAE500), and 1,000 mg (CGAE1000) mg of CGAE/kg of diet. The experiment lasted for 14 D. Compared with the HT group, broilers in the NOR and CGAE1000 groups had a higher average daily gain and a lower feed conversion ratio (P < 0.05). CGAE supplementation at 1,000 mg/kg increased pH24 value, a* value and total superoxide dismutase activity and reduced drip loss, cooking loss, L* value and the contents of malondialdehyde and carbonyl in breast meat of heat-stressed broilers (P < 0.05). Broilers in the HT group showed lower mRNA levels of nuclear factor erythroid 2-related factor 2 (P < 0.001), superoxide dismutase (P = 0.004), and catalase (P < 0.001) in breast meat compared with the other groups. CGAE supplementation at 1,000 mg/kg reduced the stearic acid and saturated fatty acids (SFA) contents and increased the dihomo-γ-linolenic acid, linoleic acid, linolenic acid, eicosapentaenoic acid, polyunsaturated fatty acids (PUFA), and n-6 PUFA contents and PUFA:SFA ratio in breast meat of heat-stressed broilers (P < 0.05). In conclusion, CGAE supplementation at 1,000 mg/kg could alleviate the adverse effects of heat stress on growth performance and meat quality and improve oxidative stability and fatty acid profile of breast meat in heat-stressed broilers.

Effects of compound porcine cerebroside and ganglioside on neurotoxicity caused by oxaliplatin chemotherapy: preliminary results

OBJECTIVE

Oxaliplatin has shown good anti-tumour activity in the treatment of tumours involving the digestive system. However, its application is limited because of severe neurotoxicity in some patients. The purpose of this study was to evaluate whether compound porcine cerebroside and ganglioside (CPCG) can reduce or prevent oxaliplatin-induced neurotoxicity.

PATIENTS AND METHODS

Patients with digestive system tumour who received oxaliplatin-based chemotherapy were retrospectively divided into experimental and control groups according to the receipt of CPCG during chemotherapy. Adverse events at the end of each chemotherapy cycle were recorded. We compared the incidence of neurotoxicity between the two groups and graded the neurotoxicity symptoms using the Common Terminology Criteria for Adverse Events v5.0.

RESULTS

The study included 115 patients (experimental group, 57; control group, 58). The number of chemotherapy cycles (6.65 vs. 6.41, p=0.540) and oxaliplatin dose (775.92 mg/m2 vs. 724.20 mg/m2, p=0.250) were comparable between the two groups. All patients developed grade 1 to 3 neurotoxicity; grade 4-5 neurotoxicity was not observed. The incidence of neurotoxicity and the probability of advanced neurotoxicity were significantly lower in the experimental group than in the control group (p<0.05). After a 6 to 18 months follow-up, the two groups showed no significant differences in the chemotherapy response and recurrence rate (p=0.846).

CONCLUSIONS

CPCG reduces oxaliplatin-induced neurotoxicity without reducing the efficacy of oxaliplatin-based regimens; thus, it can be used for preventing oxaliplatin-induced neurotoxicity in patients with cancer.

Characteristics of coronary artery atherosclerotic plaques in chronic kidney disease: evaluation with coronary CT angiography

AIM

To determine the characteristics of coronary artery atherosclerotic plaques in chronic kidney disease (CKD) with coronary computed tomography angiography (CTA).

MATERIALS AND METHODS

Sixty-six patients with CKD who underwent coronary CTA were analysed retrospectively. The extent, distribution, and types of plaques and stenosis severity were evaluated. The imaging features were compared between dialysis and non-dialysis groups. In the dialysis group, the imaging features were compared between diabetes and non-diabetes patients.

RESULTS

In total, 152 coronary vessels (2.3±1.3 per patient) and 306 segments (4.6±3.5 per patient) were found to have plaques. The most common diseased coronary vessel was the left anterior descending (LAD) artery (53 vessels, 34.9%) followed by the left circumflex (LCX) artery (39 vessels, 25.7%), and right coronary artery (RCA; 37 vessels, 24.3%) in sequence. The most commonly involved coronary artery segment was the middle segment of LAD artery (14.1%). Calcified plaques (65.9%) were detected more frequently than mixed (25.6%) or non-calcified (8.5%) plaques (p<0.001). Among the degrees of coronary stenosis, minimal stenosis (55.8%) was the most common (p<0.001). The majority of calcified plaques were non-obstructive plaques (n=134, 78.2%), while about half of non-calcified (n=14, 63.6%) and mixed plaques (n=30, 45.5%) were obstructive plaques (p<0.001).

CONCLUSION

A heavy plaque burden was detected in CKD patients at coronary CTA. Non-obstructive calcified plaque was the most common imaging feature. CKD patients with type 2 diabetes mellitus had more obstructive mixed plaques.

[β-catenin nuclear translocation represses thyroid cancer stem cells differentiating into cells with sodium-iodine symporter functional expression]

Objective: To confirm whether β-catenin nuclear translocation in thyroid cancer stem cells can differentiate into thyroid cancer cells without functional membrane expression of sodium-iodine transporter (NIS) and be resistant to iodide 131 treatment. Methods: Thyroid cancer stem cells were firstly isolated as a side population (SP) from human thyroid cancer cell line FTC133. The SP cells from FTC133 were transfected with β-catenin, and then differentiated. The cells were further collected for Western blot, Transwell and MTT assay to investigate the epithelial-mesenchymal transition (EMT) characteristics, tumor growth, invasion, and iodine uptake potency in vitro. Functional NIS expression and iodide uptake in differentiated cells were detected with immunofluorescent staining and iodide uptake assay, respectively. Subcutaneous severe combined immunodeficient (SCID) mice tumor model was induced with differentiated cancer cells to explore the in vivo effect of radioiodine treatment. Further immunohistochemical staining was performed to reveal the changes of functional proteins involved in tumor radioiodine treatment. Results: Side population was isolated from FTC133 accounting for about 0.03%, with high expression of stem cell markers and decreased expression of differentiated cell markers. Western blot showed prominent EMT phenotype in the differentiated cells from β-catenin transfected stem cell model, with absence of epithelial expression of E-cadherin and cytokeratin 18, as well as abnormal expression of vimentin,fibronectin and urokinase-type plasminogen activator. Moreover,compared with cells differentiated from untransfected or empty plasmid transfected stem cells, in vitro proliferation markedly increased 85.4% and 81.0%, respectively (both P<0.01); while in vitro invasion augmented 78.8% and 84.4%, respectively (both P<0.01). Immunofluorescent staining identified that, after transfected with β-catenin, differentiated cells underwent β-catenin nuclear translocation and NIS localization transferred from membrane to plasma, compared with cells from untransfected or empty plasmid transfected stem cells. Cell iodide uptake in vitro decreased about 52.8% and 45.2%, respectively (both P<0.01). Furthermore, in vivo experiment further demonstrated that, cells differentiated from β-catenin transfected stem cells were found with much higher tumor proliferation,tumor growth rate and larger tumor mass after radioiodine 131 treatment (both P<0.05). Conclusion: Induction of β-catenin nuclear translocation in stem cells may generate differentiated thyroid cancer cells that are not sensitive to radioiodine treatment.

[Effects of modified posteromedial approach combined raft technique for posterior Pilon fractures with collapsed articular surface]

Objective: To evaluate the effects of modified posteromedial approach combined raft technique in the treatment of posterior Pilon fractures with collapsed articular surface. Methods: A retrospective analysis was conducted on the clinical data of 51 patients with posterior Pilon fractures combined with collapsed articular surface treated in West China Hospital between January 2014 and June 2017. There were 30 males and 21 females with an average age of 49 years (range, 19-66 years).Subjective assessment of the results was performed according to the pain visual analog scale (VAS).The general function recovery was assessed with American Orthopaedic Foot & Ankle Society (AOFAS) ankle hindfoot scale at the latest follow-up. The fracture reduction quality was determined according to Burwell-Charnley imaging standard by the anteroposterior(AP)/mortise X-ray view and three-dimensional CT of the ankle on the 3rd day after operation. The t-test was used to compare the normal distribution parameters. Results: Primary healing of incision and bone were obtained in all patients without loosening, breakage or infection of internal fixation in (3.7±0.7) months (range, 3-6 months). According to the Burwell-Charnley's standards, 50 cases achieved anatomical reduction, 1 case achieved fair reduction. According to AOFAS scales, the results were excellent in 41 cases, good in 9, and fair in 1; the excellent rate was 98.0%. According to the AOFAS scores, the average score was 93.6±2.2. The preoperative VAS score was 7.5±1.1, and the postoperative score was 0.3±0.7, in which the difference was statistically significant (t=31.231, P=0.000). At the last follow-up, the angle of injured side were 13.3°±3.4° in dorsal extension, 33.5°±4.7° in plantar flexion, and 46.9°±6.1° in the range, while angel of uninjured side were 19.8°±2.3°, 36.0°±5.7° and 55.6°±2.7°, respectively; there were significant differences in the up-mentioned indexes between the both sides (t=78.932, 121.231, 113.432, all P<0.05). Conclusion: Excellent short-term effectiveness can be achieved through the modified medial approach in patients with posterior Pilon fractures, which can be used to restore the ankle joint surface under direct vision; and with the raft technique, a small plate is used to fix small fragments firmly with less soft tissue complications.

Angiogenesis in residual cancer and roles of HIF-1α, VEGF, and MMP-9 in the development of residual cancer after radiofrequency ablation and surgical resection in rabbits with liver cancer

BACKGROUND

The aim of the study was to investigate the changes of blood flow signal in residual cancer after ultrasound-guided radiofrequency ablation (RFA) treatment of rabbit liver cancer over time, and to analyse the correlation between changes in blood flow signal and changes in hypoxia-inducible factor 1-alpha (HIF-1α), vascular endothelial growth factor (VEGF), and matrix metalloproteinase-9 (MMP-9) in residual cancer tissue after RFA.

MATERIALS AND METHODS

One hundred and ten rabbits were randomly selected, VX2 tumour cells were implanted subcutaneously, tumour cells were implanted in liver. Ninety rabbits were divided into three groups: Group 1 - untreated controls, Group 2 - RFA group, Group 3 - surgical resection group. Tumour size, blood flow signal, microvessel density (MVD) in liver cancer were assessed.

RESULTS

Correlation of HIF-1a, VEGF, MMP-9 mRNA and protein expressions with blood flow signal in residual cancer were observed. Liver tumour was 2.3 ± 0.32 cm, significant differences in the grade of blood flow signal were noted among different time points (days 0, 3, 7, and 14; p < 0.05). Significant differences were also observed between the surgical resection and RFA groups at the same time points (p < 0.05). The MVD in the RFA group was lower than that in the control group, but higher than that in the surgical resection group. The immunohistochemical scores for VEGF and MMP-9 in the RFA group were lower than those in the control group, but higher than those in the surgical resection group. The grade of ultrasound blood flow signal was positively correlated with the expression of two angiogenesis-related factors, VEGF and MMP-9, and the MVD in the control, RFA, and surgical resection groups.

CONCLUSIONS

There is a higher risk of tumour recurrence with RFA than with surgical resection.

[The value of the planned neoadjuvant radiotherapy or chemoradiotherapy for the non-radical resection of esophageal squamous cell carcinoma]

Objective: The role of planned neoadjuvant radiotherapy or chemoradiotherapy in the non-radical resection of esophageal squamous cell carcinoma was unclear. The study aimed to evaluate their therapeutic effect and analyze the prognostic factors. Methods: We retrospectively analyzed the clinical data of locally advanced esophageal squamous cell carcinoma who received neoadjuvant radio therapy (33 patients) and concurrent chemoradiotherapy (119 patients) from January 2004 to December 2016 in our single-institution database.The survival rates were calculated by Kaplan-Meier method. The prognostic factors were analyzed by using Log rank test and Cox proportional hazards model. Results: The median follow-up was 29.8 months. One hundred and one patients survived more than 3 years. The rates of overall survival (OS) and disease-free survival (DFS) at 3 years were 63.9% and 55.6%, respectively.The rates of complete, partial and minimal pathological response of the primary tumor were 50.3%, 38.4%, 11.3%, the corresponding 3-year OS were 75.5%, 57.4%, 27.3% (P<0.001) and 3-year DFS were 72.0%, 44.7%, 17.6% (P<0.001), respectively.The postoperative lymph node metastasis rate was 27.0%. The 3-year OS and DFS of the lymph node positive group was 45.6% and 32.8%, significantly lower than 70.8% and 63.7% of the negative group (both P<0.001). The 3-year OS and DFS of pathologic stage Ⅰ, Ⅱ, ⅢA, ⅢB and Ⅵ A were 76.2%, 57.4%, 64.7%, 35.0%, 33.3% (P<0.001) and 70.1%, 49.3%, 41.2%, 22.1%, 33.3% (P<0.001), respectively.The operation-related mortality was 3.3%. Multivariate analysis showed that chest pain, postoperative respiratory failure, pathological differentiation, more than 15 lymph node dissection and ypTNM stage were the independent prognostic factors of OS (P<0.05 for all). Conclusions: The planned neoadjuvant radiotherapy or chemoradiotherapy for the non-radical resection of advanced esophageal squamous cell carcinoma could result in favorable survival. The chest pain, postoperative respiratory failure, pathological differentiation, the number of lymph node resection and ypTNM stage are the independent prognostic factors of the prognosis of these patients.

[Effects of two nanotopographies of ultraviolet-treated titanium implant surface on macrophage behaviour and inflammatory cytokines secretion]

Objective: To investigate the effects of two nanotopographies of ultraviolet (UV)-treated titanium surface on macrophage biological behaviour and inflammatory cytokines secretion, and to provide basis for clinical application of UV-treatment in dental implant modification. Methods: Titanium disks were allocated into two groups. Samples in one group were acid-etched in hydrofluoric acid (Acid Ti group), and those in the other group were acid-etched and anodized (Anodization group) to form two nanotopographies respectively. The surface morphology was evaluated by field-emission scanning electron microscopy (FE-SEM). The samples were stored in the dark for 8 weeks. Thirteen samples from each group were exposed to UV-irradiation for 48 h (Acid Ti+UV group and Anodization+UV group), UV-untreated samples from Acid Ti and Anodization groups served as control. Hydrophilicity of samples was measured using contact angle measuring device. After 4, 24 and 72 h of incubation, macrophage cell adhesion and proliferation were conducted using cell counting kit-8. Cytokine/chemokine secretions [tumor necrosis factor-α (TNF-α), monocyte chemotactic protein-1 (MCP-1) and macrophage inflammatory protein-1α (MIP-1α)] were measured from cell culture supernatants at 24 and 72 h using magnetic luminex assay. Cell morphology was examined using FE-SEM after 2 h of incubation. Results: Micropitted/nanopillar and micropitted/nanotubular topographies were observed in Acid Ti group and Anodization group respectively. Contact angles in Acid Ti+UV and Anodization+UV groups (20.2°±2.8° and 0.0°±0.0°) were significantly smaller than those in the Acid Ti and Anodization groups (P<0.05). Cell adhesion and proliferation in all groups at 4 and 24 h showed no difference (P>0.05). Cell proliferation in Acid Ti+UV and Anodization+UV groups at 72 h were (0.92±0.13) and (1.10±0.08) respectively, which were significantly higher than those in Acid Ti and Anodization groups. TNF-α concentration in Acid Ti+UV and Anodization+UV groups at 72 h were (1.03±0.11) and (0.87±0.10) ng/L, MCP-1 were (301.7±50.3) and (240.8±18.7) ng/L, MIP-1α were (224.9±30.6) and (233.9±14.9) ng/L respectively, which were significantly lower than those in Acid Ti and Anodization groups (P<0.05). Conclusions: UV treatment can increase hydrophilicity of two titanium surface topographies, especially of Anodization+UV group. UV-treated titanium surfaces can promote macrophage proliferation and reduce the inflammatory response in vitro.