Publications by authors named "Nanping Ai"

Objective: The focus of this research was to look at the effects of the combination of the lentinan (LNT) and oxaliplatin (Oxa) on the apoptosis of human esophageal cancer cells, as well as the underlying mechanism.

Methods: LNT and Oxa were used to treat EC-109 human esophageal cancerous cells at various doses, and the cell survival rate was measured using the Cell Counting Kit-8 (CCK-8) assay. In addition, 24 h after treatment of EC-109 cells with a combination of LNT and Oxa, flow cytometry was used to analyze their apoptotic effect on these cells.

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Following the publication of this paper, it was drawn to the Editors' attention by a concerned reader that three data panels featured in the flow cytometric plots shown in Figs. 5D and 6D, and several panels from the cell invasion assays shown in Figs. 5C and 6C, were strikingly similar to data appearing in different form in other articles by different authors.

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Age-related cataract (ARC) is the leading cause of vision impairment globally. It has been widely accepted that excessive reactive oxygen species (ROS) accumulation in lens epithelial cells (LECs) is a critical risk factor for ARC formation. Biliverdin (BV)/bilirubin (BR) redox pair is the active by-product of heme degradation with robust antioxidative stress and antiapoptotic effects.

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Epithelial-mesenchymal transition (EMT) contributes to tumor invasion, metastasis and drug resistance. AKT activation is key in a number of cellular processes. While many positive regulators for either EMT or AKT activation have been reported, few negative regulators are established.

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The purpose of this study was to examine the differences in immunopathogenesis based on the cytokine/chemokine profiles in myelin oligodendrocyte glycoprotein antibody (MOG-IgG)-positive and -negative groups. We measured the levels of T-helper cell 17 (Th17) cell-related cytokines/chemokines in 74 serum samples, which were divided into four groups: healthy control (HC) group ( = 15), idiopathic demyelinating optic neuritis (IDON) group ( = 20), aquaporin 4 (AQP4)-IgG-positive optic neuritis (ON) group ( = 18), and MOG-IgG positive-ON group ( = 21). Serum IL17, IL21, IL28, IL31, CXCL1, CXCL2, CCL2, CCL11, CCL20, and LT-α were detected.

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Article Synopsis
  • The study investigates how mechanical stretch (MS) affects the apoptosis of retinal pigment epithelial (RPE) cells, focusing on changes in protein expression profiles.
  • Key proteins observed include ECE1, which is downregulated, while RPS13 and RPL7 are upregulated specifically with MS treatment; ATAD2 and AHSG are also linked to RPE cell function and apoptosis.
  • Overexpressing ATAD2 and AHSG can reduce apoptosis rates, suggesting potential preventive strategies for retinal disorders induced by mechanical stress.
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Background: MEIS2 has been identified as one of the key transcription factors in the gene regulatory network in the development and pathogenesis of human cancers. Our study aims to identify the regulatory mechanisms of MEIS2 in hepatocellular carcinoma (HCC), which could be targeted to develop new therapeutic strategies.

Methods: The variation of MEIS2 levels were assayed in a cohort of HCC patients.

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Objective: To study the differences in immunopathogenesis based on chemokine profile in neuromyelitis optica patients positive for AQP4 antibodies or MOG antibodies.

Patients And Methods: We measured 52 cytokines/chemokines using ELISA in 59 serum samples, which were divided into three groups according to CBA results: HCs (n=16), AQP4+ (n=20) and MOG+ (n=23). The regression equation ( >0.

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Purpose: To analyse the clinical characteristics of simultaneous bilateral ON patients in China.

Methods: This retrospective study was done on 51 primary bilateral ON patients between April 2008 and July 2016 at the Chinese People's Liberation Army General Hospital. Fifty eight primary unilateral ON patients formed the control group.

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Retinoblastoma (RB) is the most common primary intraocular malignancy during infancy and childhood worldwide. Numerous microRNAs (miRNAs) contribute to RB initiation and progression through the regulation of cell proliferation, cycle, apoptosis, migration, invasion and metastasis. Therefore, further investigation concerning the expression, roles and associated mechanisms of RB‑related miRNAs may be beneficial to develop novel strategies for patients with this malignancy.

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Objective: This study aims to describe the clinical manifestations and outcomes in a cohort of older Chinese patients.

Method: A retrospective study of patients aged ≥ 45 years who had a first episode of optic neuritis (ON) between May 2008 and November 2012. Clinical features at onset and last follow-up were analyzed within subgroups (age 45-65 years and age ≥ 65 years).

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Objective: To evaluate the clinical features and prognosis of atypical optic neuritis (ON) with seronegative aquaporin-4 (AQP4) antibody in Chinese patients.

Methods: All patients with first or relapsing ON were recruited from the Neuro-ophthalmology Department of the Chinese People's Liberation Army General Hospital from January 2013 to December 2014 and assigned to one of three groups based on diagnosis: atypical ON, typical ON and neuromyelitis optica spectrum disorder (NMOSD)-ON.

Results: A total of 173 patients were included in the cohort.

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Neuromyelitis optica spectrum disorders (NMOSDs) are blindness-causing neuritis. In NMOSD patients, NMO-IgG evokes astrocytopathy that in turn causes demyelination. While measurement of NMO-IgG titer will help neurologists make the diagnosis of NMOSDs, it is not sufficient to evaluate the severity of astrocytopathy.

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Transcription elongation has been recognized as a rate-limiting step for the expression of signal-inducible genes. Through recruitment of positive transcription elongation factor P-TEFb, the bromodomain-containing protein BRD4 plays critical roles in regulating the transcription elongation of a vast array of inducible genes that are important for multiple cellular processes. The diverse biological roles of BRD4 have been proposed to rely on its functional transition between chromatin targeting and transcription regulation.

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The biochemical mechanisms that regulate the process of cancer metastasis are still poorly understood. Because kinases, and the signaling pathways they comprise, play key roles in regulation of many cellular processes, we used an unbiased RNAi in vitro screen and a focused cDNA in vivo screen against human kinases to identify those with previously undocumented roles in metastasis. We discovered that G-protein-coupled receptor kinase 3 (GRK3; or β-adrenergic receptor kinase 2) was not only necessary for survival and proliferation of metastatic cells, but also sufficient to promote primary prostate tumor growth and metastasis upon exogenous expression in poorly metastatic cells in mouse xenograft models.

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Bromodomain-containing protein Brd4 is shown to persistently associate with chromosomes during mitosis for transmitting epigenetic memory across cell divisions. During interphase, Brd4 also plays a key role in regulating the transcription of signal-inducible genes by recruiting positive transcription elongation factor b (P-TEFb) to promoters. How the chromatin-bound Brd4 transits into a transcriptional regulation mode in response to stimulation, however, is largely unknown.

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The positive transcription elongation factor b (P-TEFb), consisting of Cdk9 and cyclin T, stimulates RNA polymerase II elongation and cotranscriptional pre-mRNA processing. To accommodate different growth conditions and transcriptional demands, a reservoir of P-TEFb is kept in an inactive state in the multisubunit 7SK snRNP. Under certain stress or disease conditions, P-TEFb is released to activate transcription, although the signaling pathway(s) that controls this is largely unknown.

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