Downregulation of LINC00515 in high-grade serous ovarian cancer and its relationship with platinum resistance.

To investigate the expression of long intergenic noncoding RNA 00515 (LINC00515) in high-grade serous ovarian cancer (HGSOC) and its potential correlation with platinum resistance. Expression of LINC00515 in HGSOC (n = 115) and normal (n = 19) tissues was detected via quantitative real-time PCR (qRT-PCR). We further explored the statistical significance of the relationship between LINC00515 expression and platinum resistance in HGSOC.

Simultaneous determination of six tyrosine kinase inhibitors in human plasma using HPLC-Q-Orbitrap mass spectrometry.

Aim: Gefitinib, erlotinib, icotinib, crizotinib, lapatinib and apatinib are targeted cancer therapy agents acting through inhibition of tyrosine kinase. Method for quantifying these six drugs in human plasma of patients was required.

Materials & Methods: An HPLC-Q-Orbitrap method (based on HPLC-MS/MS) was developed and validated for the simultaneous detection and quantitation of six tyrosine kinase inhibitors in human plasma.

Immune recovery after fluid resuscitation in rats with severe hemorrhagic shock.

Objective: To investigate the effects of resuscitation with normal saline (NS), hypertonic saline (HTS), and hydroxyethyl starch (HES) on regulatory T cells (Tregs), helper T 1 (Th1)/Th2 and cytotoxic T 1 (Tc1)/Tc2 profiles in the treatment of hemorrhagic shock.

Methods: Rats subjected to severe hemorrhagic shock were resuscitated for 30 min with NS (n=8), HTS (n=8), or HES (n=8); sham (n=8) and naive control (n=8) groups were used for comparison. Following fluid resuscitation, the whole shed blood was reinfused for 30 min, and the rats were observed with continuous hemodynamic monitoring for 120 min.

Modified filter-aided sample preparation (FASP) method increases peptide and protein identifications for shotgun proteomics.

Rationale: Mass spectrometry (MS)-based protein identification depends mainly on protein extraction and digestion. Although sodium dodecyl sulfate (SDS) can preclude enzymatic digestion and interfere with MS analysis, it is still the most widely used surfactant in these steps. To overcome these disadvantages, a SDS-compatible proteomic technique for SDS removal prior to MS-based analyses was developed, namely filter-aided sample preparation (FASP).

Effect of hypertonic versus isotonic saline resuscitation on heme oxygenase-1 expression in visceral organs following hemorrhagic shock in rats.

To compare the early effects of hypertonic and isotonic saline resuscitation on heme oxygenase-1 (HO-1) expression in organs of rats with hemorrhagic shock. Rats were randomly divided into hypertonic saline resuscitation (HTS), normal saline resuscitation (NS) and sham groups. HO-1 mRNA, protein expression and apoptosis were evaluated in organs.

Hypertonic saline resuscitation contributes to early accumulation of circulating myeloid-derived suppressor cells in a rat model of hemorrhagic shock.

Background: Hemorrhagic shock is usually associated with complicated immune and inflammatory responses, which are sometimes crucial for the prognosis. As regulators of the immune and inflammatory system; proliferation, migration, distribution and activation of myeloid-derived suppressor cells (MDSCs) are intimately linked to the inflammation cascade.

Methods: In a model of severe hemorrhagic shock, thirty-five rats were randomly divided into control, sham, normal saline resuscitation (NS), hypertonic saline resuscitation (HTS), and hydroxyethyl starch resuscitation (HES), with seven in each group.

Early changes of CD4⁺CD25⁺Foxp3⁺ regulatory T cells and Th1/Th2, Tc1/Tc2 profiles in the peripheral blood of rats with controlled hemorrhagic shock and no fluid resuscitation.

Background: Hemorrhagic shock induces immune dysfunction. Regulatory T cells (Tregs), T-helper (Th) cells, and cytotoxic T-lymphocytes (CTLs) can execute many crucial actions in immune and inflammatory responses. This study was conducted to investigate the early pathophysiological changes of CD4(+)CD25(+)Foxp3(+) Treg and Th1/Th2, Tc1/Tc2 profiles in the peripheral blood of rats with controlled hemorrhagic shock and no fluid resuscitation.

Comprehensive profiling of the low molecular weight proteins and peptides in weak cation exchange beads human serum retentate.

Mass spectrometric profiling using ProteinChip and magnetic beads has rapidly grown over the past years, particularly to generate serum profiles for cancer diagnosis. The molecular weights of these distinguishing peaks are usually under 30 kDa. To identify those low molecular weight proteins and peptides is important for specific assays to be developed and increases biological insight.

Effect of hypertonic saline resuscitation on heme oxygenase-1 mRNA expression and apoptosis of the intestinal mucosa in a rat model of hemorrhagic shock.

Background: Massive blood loss due to trauma is the leading cause of death in trauma patients and military combatants. The fluid category of resuscitation for hypotensive trauma patients is open to debate. This study was conducted to investigate the early effects of hypertonic and isotonic saline solutions on heme oxygenase-1 (HO-1) mRNA expression and apoptosis in the intestinal mucosa of rats with hemorrhagic shock.

[Study of the metastasis-associated genes and its copy numbers variation in highly metastatic epithelial ovarian cancer].

Objective: To investigate the relationship of the metastasis-associated genes and its copy numbers variation in the highly metastatic human epithelial ovarian cancer cell line HO-8910PM.

Methods: The differentially expressed genes and its copy number variation between HO-8910PM cell line and normal ovarian tissues was detected by human genome U133A 2.0 gene chip and human mapping 10K array 2.

Hypertonic saline resuscitation reduces apoptosis of intestinal mucosa in a rat model of hemorrhagic shock.

Objective: To investigate the early effects of hypertonic and isotonic saline solutions on apoptosis of intestinal mucosa in rats with hemorrhagic shock.

Methods: A model of rat with severe hemorrhagic shock was established in 21 Sprague-Dawley (SD) rats. The rats were randomly divided into the sham group, normal saline resuscitation (NS) group, and hypertonic saline resuscitation (HTS) group, with 7 in each group.

[Application of SELDI-TOF serum proteome profiling in cervical squamous cell carcinoma].

Background & Objective: Up to now, there is no valid biomarker in early diagnosis of cervical cancer. Surface-enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF-MS) is a new technique used to identify biomarkers for cancers. This study was to screen new biomarkers and build diagnostic models for early diagnosis of cervical cancer by SELDI-TOF-MS.

[Screening of carcinogenesis associated genes in gastric carcinoma by gene chip].

Objective: To screen the carcinogenesis associated genes in gastric carcinoma by gene chip.

Methods: U133A (Affymetrix Santa Clara, CA) gene chip was used to detect differentially expressed genes in tumor tissues, paratumor mucosa and normal mucosa. Bioinformatics was used to analyze the screened results.

[Study on gene expression profile difference in gastric cancer, pericancerous mucosa and normal gastric mucosa from the distant cutting margin by oligonucleotide microarray].

Objective: To study the difference of gene expression profiles in gastric cancer (T), pericancerous mucosa (P) and the gastric mucosa from distant cutting margin (C), and to screen an associated novel gene in early gastric carcinogenesis by oligonucleotide microarray.

Methods: U133A (Affymetrix, Santa Clara, CA) gene chip was used to detect the gene expression profile difference in T, P and C, respectively. Bioinformatics was used to analyze the detected results.