Activities of Aztreonam-Avibactam, Eravacycline, Cefoselis, and Other Comparators against Clinical Isolates: a Multicenter Study in China, 2019.

Aztreonam-avibactam, eravacycline, and cefoselis are three novel antimicrobial agents for the treatment of serious infections caused by Gram-negative bacteria. We evaluated the activities of the above-mentioned three antimicrobial agents against clinical isolates. A total of 1,202 isolates, including 10 genera or species, were collected from 26 hospitals that cover seven regions of China.

Isolation and Characterization of Pseudomonas aeruginosa Phages with a Broad Host Spectrum from Hospital Sewage Systems and Their Therapeutic Effect in a Mouse Model.

This study aimed to isolate and characterize phages as an alternative treatment of multidrug- or pan-drug-resistant Pseudomonas aeruginosa. Phage titers and bacterial densities correlated, with the phages disappearing after bacteria were eliminated. We isolated phages in filtered sewage water by a double-layered agar spot test.

NKG2C+ natural killer cell function improves the control of HBV replication in individuals with acute HIV infection coinfected with HBV.

Individuals infected with hepatitis B virus (HBV) are often coinfected with human immunodeficiency virus (HIV). However, individuals with chronic HBV infection living with acute HIV infection have a significantly lower HBV viral load, along with higher HBeAg and HBsAg loss than HBV-infected individuals alone. Here, we investigated the possible role of natural killer cells (NK cell) function in this progressive course to explore the relationship between phenotypic/functional changes in NK cells during acute HIV infection and HBV clearance in patients with HIV/HBV coinfection.

Antisense Oligonucleotides Targeting Jagged 1 Reduce House Dust Mite-induced Goblet Cell Metaplasia in the Adult Murine Lung.

Goblet cell metaplasia, excessive mucus production, and inadequate mucus clearance accompany and exacerbate multiple chronic respiratory disorders, such as asthma and chronic obstructive pulmonary disease. Notch signaling plays a central role in controlling the fate of multiple cell types in the lung, including goblet cells. In the present study, we explored the therapeutic potential of modulating the Notch pathway in the adult murine lung using chemically modified antisense oligonucleotides (ASOs).

Diagnostic value of alpha-fetoprotein, agglutinin-reactive alpha-fetoprotein, and des-gamma-carboxyprothrombin in hepatitis B virus-related hepatocellular carcinoma.

Objective: This study aimed to explore the use of different combinations of alpha-fetoprotein (AFP), agglutinin-reactive AFP (AFP-L3), and des-gamma-carboxyprothrombin (DCP) for the early diagnosis of hepatocellular carcinoma (HCC) in patients with hepatitis B virus (HBV)-associated liver cirrhosis (LC).

Methods: There were 167 subjects, including 100 with HCC and 67 with LC, who were enrolled into this study. Serum AFP, AFP-L3, and DCP levels were detected by chemiluminescent enzyme immunoassay and analyzed using the receiver operating characteristics (ROC) method.

Orbital sparganosis in an 8-year boy: a case report.

Background: Sparganosis is one of the neglected but important food-borne parasitic zoonoses, with higher prevalence in Asian countries. The infection is commonly located in the subcutaneous tissue, brain, breast, and lung, but fewer reported infections involve the eye. Because the majority of patients with sparganosis are adults, it is likely to be missed in children.

Targeted Exome Sequencing of Congenital Cataracts Related Genes: Broadening the Mutation Spectrum and Genotype-Phenotype Correlations in 27 Chinese Han Families.

Congenital cataract is the most frequent inherited ocular disorder and the most leading cause of lifelong visual loss. The screening of pathogenic mutations can be very challenging in some cases, for congenital cataracts are clinically and genetically heterogeneous diseases. The aim of this study is to investigate the mutation spectrum and frequency of 54 cartaract-associated genes in 27 Chinese families with congenital cataracts.

[Caspase1 Inhibitor Ac-YVAD-CMK Prevents and Treats the Acute Graft Versus Host Disease in Mice].

Objective: To explore the effect of Caspase 1 inhibitor Ac-YVAD-CMK on acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation(allo-HSCT) and its mechanism.

Methods: Experiments were divided randomly into 3 groups: allogeneic hematopoietic stem cell transplantation combined with splenic cell infusion group (TS group, n=12), allogeneic hematopoietic stem cell transplantation combined with splenic cell infusion plus injection of low dose Caspase 1 inhibitor group (TS+low dose of C group, n=16) and plus high dose Caspase1 inhibitor (TS+high dose of C group, n=19). The body weight of mice in each group was dynamically detected, and the clinical manifestation of GVHD and score of aGVHD were determined, and the chimerism rate of mice was detected after transplantation for 14 days.

The role of the neutrophil Fcγ receptor I (CD64) index in diagnosing spontaneous bacterial peritonitis in cirrhotic patients.

Objective: To investigate the role of the neutrophil Fcγ receptor I (CD64) index in the diagnosis of spontaneous bacterial peritonitis (SBP) in cirrhotic patients.

Methods: A total of 123 cirrhotic patients with ascites who fulfilled the inclusion criteria were enrolled in this study. Ascites and blood samples were collected; the polymorphonuclear neutrophil (PMN) count, bacterial culture, and related laboratory tests were performed.

Clinical presentation of hemophagocytic lymphohistiocytosis in adults is less typical than in children.

Objective: Hemophagocytic lymphohistiocytosis in adults is largely underdiagnosed. To improve the rate and accuracy of diagnosis in adults, the clinical and laboratory characteristics of hemophagocytic lymphohistiocytosis were analyzed in and compared between adults and children in a Chinese cohort.

Method: Data from 50 hemophagocytic lymphohistiocytosis patients, including 34 adults and 16 children who fulfilled the 2004 hemophagocytic lymphohistiocytosis diagnostic criteria, were collected and analyzed.

Increasing occurrence of antimicrobial-resistant hypervirulent (hypermucoviscous) Klebsiella pneumoniae isolates in China.

Background: New hypervirulent variants of Klebsiella pneumoniae (hvKP) are emerging globally, most of which exhibit antimicrobial susceptibility.

Methods: A retrospective study was conducted in 88 patients with cultures positive for K. pneumoniae hospitalized in the Beijing You'an Hospital from April 2010 to June 2012.

Diagnostic performance of interferon-gamma releasing assay in HIV-infected patients in China.

Background: Active tuberculosis infection represents a very common and significant threat to HIV-infected patients. But measures to accurately detect it are limited.

Objective: To compare and analyze the diagnostic efficacy of T-SPOT.

Reflections on microRNAs in chronic pulmonary disease: looking into the miR-ror and crystal ball.

Chronic respiratory diseases are a significant health problem requiring novel approaches to both complement existing therapies and provide breakthrough medicines. Recent clinical advances in understanding the behavior of inhaled oligonucleotides provide the impetus for application of this technology to microRNA therapeutics. MicroRNAs are evolutionarily conserved small regulatory RNA molecules involved in tuning gene networks controlling biological and pathological processes.

miR-146a is a significant brake on autoimmunity, myeloproliferation, and cancer in mice.

Excessive or inappropriate activation of the immune system can be deleterious to the organism, warranting multiple molecular mechanisms to control and properly terminate immune responses. MicroRNAs (miRNAs), ∼22-nt-long noncoding RNAs, have recently emerged as key posttranscriptional regulators, controlling diverse biological processes, including responses to non-self. In this study, we examine the biological role of miR-146a using genetically engineered mice and show that targeted deletion of this gene, whose expression is strongly up-regulated after immune cell maturation and/or activation, results in several immune defects.

[Clinical study of standard dose of rituximab for the treatment of refractory primary immune thrombocytopenia].

Objective: To evaluate the efficacy and safety of rituximab on B-lymphocytes and anti-platelet glycoprotein-specific antibodies in patients with refractory primary immune thrombocytopenic (ITP).

Methods: Thirty-one ITP patients with a median age of 36 years (range 16 - 56 years) received solely intravenous rituximab at the dose of 375 mg/m(2) once weekly for consecutive 4 weeks. Lab studies included complete blood count, serum concentrations of IgG, IgM and IgA.

[Analysis of SCCmec genotyping and antimicrobial susceptibility tests in methicillin resistant Staphylococcus aureus].

Objective: To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology.

Methods: To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion.

PF-00477736 mediates checkpoint kinase 1 signaling pathway and potentiates docetaxel-induced efficacy in xenografts.

Purpose: Checkpoint kinase 1 (Chk1) plays a critical role in the activation of mitotic spindle checkpoint and DNA damage checkpoint. We examined the preclinical use of the Chk1 inhibitor PF-00477736 as a docetaxel-sensitizing agent. Specifically, we investigated the correlation between PF-00477736-mediated modulation of biomarkers and the sensitization of docetaxel efficacy.

[Detection of alpha-fetoprotein-L3 using agglutinin-coupled spin column to be used in diagnosis of hepatocellular carcinoma].

Objective: To explore the effect of use of lens culinaris agglutinin (LCA)-coupled spin column (ACSC) in detection of alpha-fetoprotein (AFP) isoform AFP-L3 and to evaluate the value of AFP-L3 as a biomarker in diagnosis of hepatocellular-carcinoma (HCC).

Methods: The serum samples of 132 patients with elevated AFP level (20-1000 microg/L), 79 diagnosed as with HCC and 53 with benign liver diseases (35 with liver cirrhosis and 18 with chronic hepatitis) underwent ACSC to isolate the fraction of AFP-L3. The contents of AFP and AFP-L3 were detected by micro-particle immunoassay.

A proton-activated, outwardly rectifying chloride channel in human umbilical vein endothelial cells.

Extracellular acidic pH-activated chloride channel I(Cl, acid), has been characterized in HEK 293 cells and mammalian cardiac myocytes. This study was designed to characterize I(Cl,acid) in human umbilical vein endothelial cells(HUVECs). The activation and deactivation of the current rapidly and repeatedly follows the change of the extracellular solution at pH 4.

[A clinical analysis of HBV reactivation in patients with malignant tumors].

Objective: To observe the anti-viral therapy effect on HBV reactivation in malignant tumor patients and hepatitis B virus carriers after their cancer chemotherapy.

Methods: Thirteen cancer patients but also chronic hepatitis B virus carriers were enrolled in this study. They were randomly put into two groups.

CD154 induces p73 to overcome the resistance to apoptosis of chronic lymphocytic leukemia cells lacking functional p53.

Intravenous infusion of autologous chronic lymphocytic leukemia (CLL) cells transduced with an adenovirus encoding CD40-ligand (CD154) caused rapid reductions in leukemia-cell counts and lymphnode size. We hypothesized that CD40-ligation via CD154 sensitized CLL cells to death-receptor-mediated apoptosis. We found that CD154-expressing cells induced expression of CD95 and the BH3-interacting-domain death agonist (Bid) in CLL, regardless of whether the leukemia cells had functional p53.

[The diagnostic value of platelet glycoprotein-specific autoantibody detection in idiopathic thrombocytopenic purpura].

To detect levels of platelet glycoprotein-specific autoantibody in idiopathic thrombocytopenic purpura (ITP), chronic aplastic anemia (CAA), hematologic malignancies and healthy volunteers, and evaluate the clinical significance of platelet glycoprotein-specific autoantibody level in diagnosis for ITP, anti-GPIb/IX, anti-GPIIb/IIIa, anti-GPIV and anti-GPV auto-antibodies were detected contemporaneously by a modified monoclonal antibody immobilization of platelet antigen assay (modified MAIPA). The results showed that the total positive rate of antibodies against platelet GPIb/IX, GPIIb/IIIa, GPIV, GPV were 69.99%, 10%, 20% and 0% in ITP, CAA, hematologic malignancy group and healthy volunteers respectively.