Study on diagnostic value of P1NP and β-CTX in bone metastasis of patients with breast cancer and the correlation between them

OBJECTIVE

This study aimed to investigate the diagnostic value of the total amino-terminal propeptide of type 1 procollagen (P1NP) and C-terminal telopeptide of β-I collagen (β-CTX) in bone metastasis of patients with breast cancer and the correlation between them.

PATIENTS AND METHODS

The medical records of 73 patients were retrospectively analyzed. These patients with breast cancer were treated in Oncology, General Surgery, and Orthopedic Departments in The Third People's Hospital of Qingdao from March 2014 to April 2017, including 40 patients with bone metastasis (bone metastasis group) and 33 patients with no bone metastasis (non-bone metastasis group). Other 40 healthy people who received physical examination in the same period were selected as the control group. The expression of P1NP and β-CTX in plasma were detected by the Enzyme-linked immunosorbent assay, and the correlation between them was analyzed.

RESULTS

There were significant differences in P1NP and β-CTX concentrations among the three groups (p<0.05). The concentrations of P1NP in the control group and the non-bone metastasis group were significantly lower than that in the bone metastasis group (p<0.05); the concentrations of β-CTX in the control group and the non-bone metastasis group were significantly lower than that in the bone metastasis group (p<0.05). P1NP: AUC=0.852, sensitivity: 72.5%, specificity: 93.9%, CUT OFF=66.44. β-CTX: AUC=0.883, sensitivity: 85.0%, specificity: 84.8%, CUT OFF=69.8. Joint detection: AUC=0.952, sensitivity: 84.8%, specificity: 99.5%, CUT OFF=99.5. The results of the concentrations of P1NP and β-CTX in the bone metastasis group detected by the Pearson correlation analysis showed that their concentrations were positively correlated in the bone metastasis group (r=0.764, p<0.05).

CONCLUSIONS

P1NP and β-CTX in plasma have a high diagnostic value for bone metastasis of breast cancer and have important significance in the diagnosis of bone metastasis and disease monitoring.

Correlation between rheumatoid arthritis and immunological changes in a rheumatoid arthritis rat model

Rheumatoid arthritis is an autoimmune disease characterized by the synovitis of joints and the modulation of chronic inflammation determined by increased levels of inflammatory cytokines. This study aimed to investigate the characteristics of the immunological profile of the cells of the synovial membrane and the expression of IL-10 and IL-17 in a rheumatoid arthritis rat model in order to provide a targetdirected treatment for immunological control. Eighty female Wistar rats were randomly divided into a rheumatic arthritis model group (model group) and a control group, 40 animals per group. After the successful rheumatoid arthritis rat model was obtained, 10 animals were sacrificed from each group every week starting from the third week till the sixth week and the expression levels of CD3, CD21, and CD68 in the synovial region along with the blood level of IL-10 and IL-17 were assessed. At the four stages after modeling, the expression of CD3 in the model group increased compared with the control group (P less than 0.05). The expression of CD21 was different between the model group and the control group, but the difference did not reach statistical significance (P>0.05). The expression of CD68 determined at weeks 4 and 5 after modeling was increased compared to the control group (P less than 0.05). At 6 week after modeling, IL-10 levels in the model group were higher than those in the control group (P less than 0.05). At weeks 4 and 5 after modeling, the level of IL-17 in the model group increased compared to the control group (P less than 0.05). The level of IL-17 increased with the increase of synovial inflammation in the rheumatoid arthritis-induced rats, and the level of IL-10 increased as the inflammation subsided, which shows that both cytokines are related to the occurrence and development of rheumatoid arthritis and its inflammation.

Natural history of serum HBV-RNA in chronic HBV infection

Virus-like particles encapsulating HBV-RNA represent a serum biomarker for assessing viral replication activity in clinical practice. However, baseline levels of serum HBV-RNA and their associations with viral replicative intermediates and liver disease in phases of chronic hepatitis B remain unknown. In this cross-sectional study, 102 patients were categorized into immune-tolerant (IT), HBeAg-positive immune active (HBeAg+IA), inactive carrier (IC) and HBeAg-negative immune active (HBeAg-IA) phases. HBV-RNA in serum samples and in 66 paired liver biopsies were quantified and correlated with serum ALT levels, histopathological scores and the levels of other viral replicative intermediates. Mean levels of serum HBV-RNA differed among phases, with the highest levels among IT (6.78 ± 0.83 log₁₀ copies mL^-1 ) patients, followed by HBeAg+IA (5.73 ± 1.16 log₁₀ copies mL^-1 ), HBeAg-IA (4.52 ± 1.25 log₁₀ copies mL^-1 ) and IC (2.96 ± 0.40 log₁₀ copies mL^-1 ) patients. Serum HBV-RNA levels correlated with HBV DNA in all phases, although correlations with other viral replicative intermediates weakened or disappeared when cases were stratified into phases. Distinct compositions of viral products were found among phases: the ratio of HBsAg to serum HBV-RNA was highest in IC patients, while the ratio of serum HBV-RNA to intrahepatic HBV-RNA and the ratio of intrahepatic HBV-DNA to intrahepatic HBV-RNA were significantly higher in IT patients. In conclusion, baseline levels of HBV-RNA and the composition of viral replicative intermediates differ significantly across the natural course of chronic HBV infection. These findings shed light on the nature of viral replication and pathogenesis of disease among different phases of chronic HBV infection.

Hepatitis B virus and risk of non-Hodgkin lymphoma: An updated meta-analysis of 58 studies

Previous studies have focused on the relationship between hepatitis B virus (HBV) infection and non-Hodgkin lymphoma (NHL). However, the results remain inconsistent and somehow conflicting in different subgroups. The aim of this study was to combine the findings of independent studies to comprehensively assess the association between HBV and NHL using a meta-analysis. Relevant studies were identified through structured keyword searches in PubMed, EMBASE and the China National Knowledge Infrastructure (CNKI) database, and 58 studies with a total of 53 714 NHL cases and 1 778 591 controls were finally included. Pooled estimates indicated a significantly increased NHL risk in HBV-infected individuals (summary odds ratio [sOR]: 2.50; 95% confidence interval [CI]: 2.20-2.83) regardless of the study design (case-control studies: sOR: 2.47; 95% CI: 2.16-2.82; cohort studies: sOR: 2.64; 95% CI: 1.78-3.91). Considerable heterogeneity was observed across studies that was primarily attributed to the NHL subtypes (meta-regression: P < .05). Overall, B-cell NHL (sOR: 2.46; 95% CI: 1.97-3.07) presented a stronger association with HBV infection than T-cell NHL (sOR: 1.67; 95% CI: 1.34-2.10). Within the B-cell NHL subtypes, HBV infection was significantly associated with diffuse large B-cell lymphoma (DLBCL, sOR: 2.06; 95% CI: 1.48-2.88) and follicular lymphoma (FL, sOR: 1.54; 95% CI: 1.11-2.12), but not with chronic lymphocytic leukaemia/small lymphocytic lymphoma (CLL/SLL) and Burkitt lymphoma. The results of this meta-analysis support a positive link between HBV infection and NHL development. Further investigations for the mechanisms underlying HBV-induced NHL are warranted.

Boundary Constraints for Minimum Cost Control of Directed Networks

Controlling directed networks with minimum cost has become an emerging branch in the areas of complex networks and control recently. In this paper, we focus on this minimum cost control problem subject to two types of boundary constraints, namely, trace boundary constraint and orthonormal boundary constraint on the input matrices. First, the minimum cost control problem is formulated as an optimization model for each type of boundary constraint. Next, two iterative algorithms, named as trace-constraint-based projected gradient method and orthonormal-constraint-based projected gradient method, are proposed to solve the optimal problem, respectively. Then, convergence properties of both algorithms are established. Finally, extensive simulation results show the effectiveness of our methods based on detailed comparisons between the two boundary conditions. We believe the results reveal some interesting physical insights for the optimal control of directed networks.

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Dishaw A, Dutta V, Flowers K, Franco Sevilla M, Geffert P, George C, Golf F, Gouskos L, Gran J, Incandela J, Mccoll N, Mullin SD, Richman J, Stuart D, Suarez I, West C, Yoo J, Anderson D, Apresyan A, Bendavid J, Bornheim A, Bunn J, Chen Y, Duarte J, Mott A, Newman HB, Pena C, Spiropulu M, Vlimant JR, Xie S, Zhu RY, Andrews MB, Azzolini V, Calamba A, Carlson B, Ferguson T, Paulini M, Russ J, Sun M, Vogel H, Vorobiev I, Cumalat JP, Ford WT, Jensen F, Johnson A, Krohn M, Mulholland T, Stenson K, Wagner SR, Alexander J, Chatterjee A, Chaves J, Chu J, Dittmer S, Eggert N, Mirman N, Nicolas Kaufman G, Patterson JR, Rinkevicius A, Ryd A, Skinnari L, Soffi L, Sun W, Tan SM, Teo WD, Thom J, Thompson J, Tucker J, Weng Y, Wittich P, Abdullin S, Albrow M, Apollinari G, Banerjee S, Bauerdick LAT, Beretvas A, Berryhill J, Bhat PC, Bolla G, Burkett K, Butler JN, Cheung HWK, Chlebana F, Cihangir S, Cremonesi M, Elvira VD, Fisk I, Freeman J, Gottschalk E, Gray L, Green D, Grünendahl S, Gutsche O, Hare 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Maity M, Majumder G, Mazumdar K, Mitra S, Mohanty GB, Parida B, Sarkar T, Sur N, Sutar B, Wickramage N. Measurements of the associated production of a Z boson and b jets in pp collisions at s = 8 TeV

Measurements of the associated production of a Z boson with at least one jet originating from a b quark in proton-proton collisions ats = 8 TeV are presented. Differential cross sections are measured with data collected by the CMS experiment corresponding to an integrated luminosity of 19.8fb - 1 . Z bosons are reconstructed through their decays to electrons and muons. Cross sections are measured as a function of observables characterizing the kinematics of the b jet and the Z boson. Ratios of differential cross sections for the associated production with at least one b jet to the associated production with any jet are also presented. The production of a Z boson with at least two b jets is investigated, and differential cross sections are measured for the dijet system. Results are compared to theoretical predictions, testing two different flavour schemes for the choice of initial-state partons.

A clip domain serine protease involved in moulting in the silkworm, Bombyx mori: cloning, characterization, expression patterns and functional analysis

Clip domain serine proteases (CLIPs), characterized by one or more conserved clip domains, are essential components of extracellular signalling cascades in various biological processes, especially in innate immunity and the embryonic development of insects. Additionally, CLIPs may have additional non-immune functions in insect development. In the present study, the clip domain serine protease gene Bombyx mori serine protease 95 (BmSP95), which encodes a 527-residue protein, was cloned from the integument of B. mori. Bioinformatics analysis indicated that BmSP95 is a typical CLIP of the subfamily D and possesses a clip domain at the N terminus, a trypsin-like serine protease (tryp_spc) domain at the C terminus and a conserved proline-rich motif between these two domains. At the transcriptional level, BmSP95 is expressed in the integument during moulting and metamorphosis, and the expression pattern is consistent with the fluctuating 20-hydroxyecdysone (20E) titre in B. mori. At the translational level, BmSP95 protein is synthesized in the epidermal cells, secreted as a zymogen and activated in the moulting fluid. Immunofluorescence revealed that BmSP95 is distributed into the old endocuticle in the moulting stage. The expression of BmSP95 was upregulated by 20E. Moreover, expression of BmSP95 was downregulated by pathogen infection. RNA interference-mediated silencing of BmSP95 led to delayed moulting from pupa to moth. These results suggest that BmSP95 is involved in integument remodelling during moulting and metamorphosis.

[Analysis of the influence of iron overload in glucose metabolism in thalassemia major patients]

Objective: This study aimed at determining the characteristics of the glucose homeostasis and its relationship with iron overload of the patients with β-thalassemia major (β-TM). Method: From Sun Yat-sen Memorial Hospital between January 2014 and December 2015, a total of 57 transfusion-dependent β-TM patients with 5-18 years old were enrolled in this study and fasting blood glucose(FBG) and insulin level, serum ferritin (SF), serum iron, transferrin, total iron binding capacity, unsaturated iron binding capacity were determined.Insulin resistance index (IRI), insulin sensitivity index and β-cell function index (BFI) were also estimated. Besides, in 36 patients cardiac T2* and liver T2* were estimated. Result: (1) Four patients(7%) with β-TM were diagnosed diabetes mellitus, and 14(24%) had impaired fasting glucose. (2) The incidence of abnormal glucose metabolism was significantly different according to levels of SF and degrees of the cardiac iron overload(χ(2)=9.737, P<0.05; χ(2)=17.027, P<0.05). It rose while the level of SF increased and the degree of cardiac iron overload aggravated. (3) The incidence of abnormal glucose level was not significantly different in cases with different degree of liver iron overload.The severe group of liver iron overload had significantly higher levels of INS, HOMA-βFI, HOMA-ISI, HOMA-βFI than the non-severe group (Z=-2.434, -2.515, F=8.658, all P<0.05), while no differences were found in the level of FBG, HOMA-βFI between two groups. (4) The result of logistic regression analysis indicated that the cardiac T2* was a significant predictor for the incidence of abnormal glucose metabolism in TM patients (P=0.035, OR=1.182%, 95%CI=1.048 to 1.332). Conclusion: The high prevalence of abnormal glucose metabolism in β-TM patients was mainly closely related with the internal iron overload, especially in organs.The cardiac T2* was an independent risk factor for the incidence of abnormal glucose metabolism in TM patients.

CAMK2γ in intestinal epithelial cells modulates colitis-associated colorectal carcinogenesis via enhancing STAT3 activation

Inflammation is one of the major risk factors for cancer. Here, we show that calcium/calmodulin-dependent protein kinase II gamma (CAMK2γ) in intestinal epithelial cells (IECs) modulates inflammatory signals and promotes colitis-associated cancer (CAC) in mice. We have identified CAMK2γ as a downstream target of colitis-induced WNT5a signaling. Furthermore, we have shown that CAMK2γ protects against intestine tissue injury by increasing IEC survival and proliferation. CAMK2γ knockout mice displayed reduced CAC. Furthermore, we used bone marrow transplantation to reveal that CAMK2γ in IECs, but not immune cells, was crucial for its effect on CAC. Consistently, transgenic over-expression of CAMK2γ in IECs accelerated CAC development. Mechanistically, CAMK2γ in IECs enhanced epithelial STAT3 activation to promote survival and proliferation of colonic epithelial cells during CAC development. These results thus identify a new molecular mechanism mediated by CAMK2γ in IECs during CAC development, thereby providing a potential new therapeutic target for CAC.

Search for Dark Matter and Supersymmetry with a Compressed Mass Spectrum in the Vector Boson Fusion Topology in Proton-Proton Collisions at sqrt[s]=8 TeV

A first search for pair production of dark matter candidates through vector boson fusion in proton-proton collisions at sqrt[s]=8  TeV is performed with the CMS detector. The vector boson fusion topology enhances missing transverse momentum, providing a way to probe supersymmetry, even in the case of a compressed mass spectrum. The data sample corresponds to an integrated luminosity of 18.5  fb^{-1}, recorded by the CMS experiment. The observed dijet mass spectrum is consistent with the standard model expectation. In an effective field theory, dark matter masses are explored as a function of contact interaction strength. The most stringent limit on bottom squark production with mass below 315 GeV is also reported, assuming a 5 GeV mass difference with respect to the lightest neutralino.

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Measurements of the [Formula: see text] production cross section in lepton+jets final states in pp collisions at 8 [Formula: see text] and ratio of 8 to 7 [Formula: see text] cross sections

A measurement of the top quark pair production ([Formula: see text]) cross section in proton-proton collisions at the centre-of-mass energy of 8[Formula: see text] is presented using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.6[Formula: see text]. This analysis is performed in the [Formula: see text] decay channels with one isolated, high transverse momentum electron or muon and at least four jets, at least one of which is required to be identified as originating from hadronization of a b quark. The calibration of the jet energy scale and the efficiency of b jet identification are determined from data. The measured [Formula: see text] cross section is [Formula: see text]. This measurement is compared with an analysis of 7[Formula: see text] data, corresponding to an integrated luminosity of 5.0[Formula: see text], to determine the ratio of 8[Formula: see text] to 7[Formula: see text] cross sections, which is found to be [Formula: see text]. The measurements are in agreement with QCD predictions up to next-to-next-to-leading order.

The vasorelaxant mechanisms of methanol on isolated rat aortic rings: Involvement of ion channels and signal transduction pathways

It is reported that methanol is generally used as an industrial solvent, antifreeze, windshield washer fluid, cooking fuel and perfume. Methanol ingestion can lead to severe metabolic disturbances, blindness, or even death. So far, few studies about its negative effects on cardiovascular system have been reported. The purpose of this study was to determine the vasoactive effect of methanol and roles of ion channels and signal transduction pathways on isolated rat aorta. The results suggested that the mechanism of methanol-induced vasorelaxation at low concentrations (<500 mM) was mediated by ATP-sensitive K⁺ (K_ATP) and L-type Ca²⁺ channels, but the mechanism at high concentrations (>600 mM) was related to K_ATP, voltage-dependent K⁺, big-conductance Ca²⁺-activated K⁺, L-type Ca²⁺ channels as well as prostacyclin, protein kinase C, β-adrenoceptors pathways. In addition, methanol induced a dose-dependent inhibition of vasoconstrictions caused by calcium chloride, potassium chloride, or norepinephrine. Further work is needed to investigate the relative contribution of each channel and pathway in methanol-induced vasoactive effect.

Measurement of dijet azimuthal decorrelation in pp collisions at [Formula: see text]

A measurement of the decorrelation of azimuthal angles between the two jets with the largest transverse momenta is presented for seven regions of leading jet transverse momentum up to 2.2[Formula: see text]. The analysis is based on the proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of 8[Formula: see text] corresponding to an integrated luminosity of 19.7[Formula: see text]. The dijet azimuthal decorrelation is caused by the radiation of additional jets and probes the dynamics of multijet production. The results are compared to fixed-order predictions of perturbative quantum chromodynamics (QCD), and to simulations using Monte Carlo event generators that include parton showers, hadronization, and multiparton interactions. Event generators with only two outgoing high transverse momentum partons fail to describe the measurement, even when supplemented with next-to-leading-order QCD corrections and parton showers. Much better agreement is achieved when at least three outgoing partons are complemented through either next-to-leading-order predictions or parton showers. This observation emphasizes the need to improve predictions for multijet production.

Measurement of the differential cross section and charge asymmetry for inclusive [Formula: see text] production at [Formula: see text] TeV

The differential cross section and charge asymmetry for inclusive [Formula: see text] production at [Formula: see text] are measured as a function of muon pseudorapidity. The data sample corresponds to an integrated luminosity of 18.8[Formula: see text] recorded with the CMS detector at the LHC. These results provide important constraints on the parton distribution functions of the proton in the range of the Bjorken scaling variable x from [Formula: see text] to [Formula: see text].

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Mattia M, Delgado A, Dildick S, Eusebi R, Gilmore J, Huang T, Kamon T, Krutelyov V, Mueller R, Osipenkov I, Pakhotin Y, Patel R, Perloff A, Rose A, Safonov A, Tatarinov A, Ulmer KA, Akchurin N, Cowden C, Damgov J, Dragoiu C, Dudero PR, Faulkner J, Kunori S, Lamichhane K, Lee SW, Libeiro T, Undleeb S, Volobouev I, Appelt E, Delannoy AG, Greene S, Gurrola A, Janjam R, Johns W, Maguire C, Mao Y, Melo A, Ni H, Sheldon P, Snook B, Tuo S, Velkovska J, Xu Q, Arenton MW, Cox B, Francis B, Goodell J, Hirosky R, Ledovskoy A, Li H, Lin C, Neu C, Sinthuprasith T, Sun X, Wang Y, Wolfe E, Wood J, Xia F, Clarke C, Harr R, Karchin PE, Kottachchi Kankanamge Don C, Lamichhane P, Sturdy J, Belknap DA, Carlsmith D, Cepeda M, Dasu S, Dodd L, Duric S, Gomber B, Grothe M, Hall-Wilton R, Herndon M, Hervé A, Klabbers P, Lanaro A, Levine A, Long K, Loveless R, Mohapatra A, Ojalvo I, Perry T, Pierro GA, Polese G, Ruggles T, Sarangi T, Savin A, Sharma A, Smith N, Smith WH, Taylor D, Woods N, Collaboration [ACMS. Search for direct pair production of supersymmetric top quarks decaying to all-hadronic final states in pp collisions at [Formula: see text]

Results are reported from a search for the pair production of top squarks, the supersymmetric partners of top quarks, in final states with jets and missing transverse momentum. The data sample used in this search was collected by the CMS detector and corresponds to an integrated luminosity of 18.9[Formula: see text] of proton-proton collisions at a centre-of-mass energy of 8[Formula: see text] produced by the LHC. The search features novel background suppression and prediction methods, including a dedicated top quark pair reconstruction algorithm. The data are found to be in agreement with the predicted backgrounds. Exclusion limits are set in simplified supersymmetry models with the top squark decaying to jets and an undetected neutralino, either through a top quark or through a bottom quark and chargino. Models with the top squark decaying via a top quark are excluded for top squark masses up to 755[Formula: see text] in the case of neutralino masses below 200[Formula: see text]. For decays via a chargino, top squark masses up to 620[Formula: see text] are excluded, depending on the masses of the chargino and neutralino.