Tidal-driven NO emission is a stronger resister than CH to offset annual carbon sequestration in mangrove ecosystems.

The mangrove ecosystems store a significant amount of "blue carbon" to mitigate global climate change, but also serve as hotspots for greenhouse gases (GHGs: CO, CH and NO) production. The CH and NO emissions offset mangrove carbon benefits, however, the extent of this effect remains inadequately quantified. By applying the 36 h time-series observations and mapping cruises, here we investigated the spatial and temporal distribution of GHGs and their fluxes in Dongzhaigang (DZG) bay, the largest mangrove ecosystem in China, at tidal and monthly scales.

Efficacy of tailored second-line therapy of eradication in patients with clarithromycin-based treatment failure: a multicenter prospective study.

Background: After the failure of clarithromycin- and bismuth-based quadruple therapy (CBQT), levofloxacin- and bismuth-based quadruple therapy (LBQT) is recommended for eradication. We compared the efficacies of second-line tailored bismuth-based quadruple therapy (TBQT) and empirical LBQT.

Methods: Patients with CBQT failure were randomly assigned to receive TBQT or LBQT for 14 days.

An Acute Pulmonary Embolism Patient with Negative D-dimer Masquerading as Right Pneumonia with Pleural Effusion Proven by CT Pulmonary Arteriography: a Case Report and Literature Review.

Background: We report an acute pulmonary embolism with negative D-dimer masquerading as right pneumonia with pleural effusion proven by CT pulmonary arteriography (CTPA).

Methods: Appropriate laboratory tests are carried out. The application of vascular ultrasound for the cause of left lower extremity edema.

The Interaction Between MiR-141 and lncRNA-H19 in Regulating Cell Proliferation and Migration in Gastric Cancer.

Background/aims: Non-coding RNAs including miRNA and lncRNA had been reported to regulate gene expression and were both related to cancer progression. MicroRNA-141 (miR-141) has been reported to play a role in the epithelial to mesenchymal transition (EMT) process and H19 has also been demonstrated to promote malignancy in various cancers. We aimed to determine the correlation between miR-141 and H19 and their roles in gastric cancer in this study.

UACUAAC is the preferred branch site for mammalian mRNA splicing.

The conserved branch-site sequence UAC-UAAC is known to form base pairs with the complementary sequence GUAGUA in U2 small nuclear RNA (snRNA) during mRNA splicing in the yeast Saccharomyces cerevisiae. Although the GUAGUA element is conserved in mammalian U2 snRNA, mammalian branch sites conform only weakly to a YURAC consensus and can even be deleted without obvious effects on the efficiency of splicing in vivo. To understand why the GUAGUA element of U2 is conserved in evolution but the branch site is not, we have devised two different competitive assays for branch-site selection using the first intron of the human beta-globin gene.