Publications by authors named "LingChao Meng"

The initiation of calcium oxalate (CaOx) kidney stone formation is highly likely to stem from injury to the renal tubular epithelial cells (RTECs) induced by stimulation from an aberrant urinary environment. CHAC1 plays a critical role in stress response mechanisms by regulating glutathione metabolism. Endoplasmic reticulum (ER) stress and ferroptosis are demonstrated to be involved in stone formation.

View Article and Find Full Text PDF

Background: Both intestinal and pulmonary systems are parts of the mucosal immune system, comprising ∼80% of all immune cells. These immune cells migrate or are transported between various mucosal tissues to maintain tissue homeostasis.

Methods: In this study, we isolated neutrophils from the peripheral blood of patients and utilized immunofluorescence, flow cytometry, and Western blotting to confirm the incidence of "nucleus-directed degranulation" .

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates how motor function changes over time in Chinese patients with GNE myopathy and its relationship to genetic mutations, specifically the p.D207V mutation.
  • Conducted at Peking University First Hospital, the research included 83 patients and analyzed their medical histories to assess motor function using standardized scales.
  • Findings indicate that patients with the p.D207V mutation had later onset of symptoms and were less likely to become wheelchair-dependent compared to those without the mutation, highlighting the impact of genotype on disease progression.
View Article and Find Full Text PDF

Background And Purpose: The substantial role of inflammation in amyotrophic lateral sclerosis (ALS) is gaining support from recent research. Studies indicate that circulating cell-free mitochondrial DNA (ccf-mtDNA) can activate the immune system and is associated with neurodegenerative diseases. This research was designed to quantify ccf-mtDNA levels in the serum of ALS patients.

View Article and Find Full Text PDF

Background: Hereditary transthyretin amyloidosis (ATTR) is an autosomal dominant disease characterized by amyloid fibril deposition. The TTR c.148G > T mutation (V30L) in ATTR is rarely reported, and its biochemical properties are unknown.

View Article and Find Full Text PDF

Distal hereditary motor neuropathies (dHMN) are a group of heterogeneous diseases and previous studies have reported that the compound heterozygous recessive MME variants cause dHMN. Our study found a novel homozygous MME variant and a reported compound heterozygous MME variant in two Chinese families, respectively. Next-generation sequencing and nerve conduction studies were performed for two probands.

View Article and Find Full Text PDF

Assessing and cultivating students' HOTS are crucial for interior design education in a blended learning environment. However, current research has focused primarily on the impact of blended learning instructional strategies, learning tasks, and activities on the development of HOTS, whereas few studies have specifically addressed the assessment of these skills through dedicated scales in the context of blended learning. This study aimed to develop a comprehensive scale for assessing HOTS in interior design major students within the context of blended learning.

View Article and Find Full Text PDF

The objective of this study was to develop a comprehensive multidimensional framework by identifying the key drivers and components associated with the health of older people in healing environments, and to apply this framework in high-density city block spaces, creating opportunities for aging in place. Effective theoretical and practical research frameworks are necessary to determine how to best support older adults in high-density city areas as they face aging-related challenges. The methodological approach involved bibliometric analysis (SciMAT) and systematic literature review of approximately 4446 articles related to rehabilitation settings and older adults.

View Article and Find Full Text PDF

Objective: The transcriptional heterogeneity at a single-nucleus level in human Becker muscular dystrophy (BMD) dystrophic muscle has not been explored. Here, we aimed to understand the transcriptional heterogeneity associated with myonuclei, as well as other mononucleated cell types that underly BMD pathogenesis by performing single-nucleus RNA sequencing.

Methods: We profiled single-nucleus transcriptional profiles of skeletal muscle samples from 7 BMD patients and 3 normal controls.

View Article and Find Full Text PDF

Background: The prognostic potential of immune-related genes, particularly immune checkpoint inhibitors (ICIs) and long non-coding RNAs (lncRNAs), is gaining attention for evaluating the prognosis of breast cancer patients.

Methods: We analyzed 23 datasets to identify 15 ICI-related mRNAs and 5 immune-related lncRNAs, creating a robust immune score (IS). This score was used to classify patients into high and low IS groups and assess their survival outcomes.

View Article and Find Full Text PDF

Renal calculi (RC) represent a prevalent disease of the urinary system characterized by a high incidence rate. The traditional clinical diagnosis of RC emphasizes imaging and stone composition analysis. However, the significance of metabolic status in RC diagnosis and prevention remains unclear.

View Article and Find Full Text PDF
Article Synopsis
  • Mitochondrial disease, particularly the MELAS phenotype linked to the m.3243A>G genotype, presents significant treatment challenges.
  • Research revealed that serine catabolism pathways were notably upregulated in MELAS patients' muscle tissue, with a significant increase in the protein SHMT2.
  • Inhibiting SHMT2 with the compound SHIN1 improved cell viability and the NAD/NADH ratio in MELAS muscle cells, suggesting a promising therapeutic approach.
View Article and Find Full Text PDF

Most pathogenic variants are detectable and interpretable by standard genetic testing for dystrophinopthies. However, approximately 1∼3% of dystrophinopthies patients still do not have a detectable variant after standard genetic testing, most likely due to structural chromosome rearrangements and/or deep intronic pseudoexon-activating variants. Here, we report on a boy with a suspected diagnosis of Becker muscular dystrophy (BMD) who remained without a detectable variant after exonic DNA-based standard genetic testing.

View Article and Find Full Text PDF

Background: Pathogenic missense variants in the dystrophin (DMD) gene are rarely reported in dystrophinopathies. Most DMD missense variants are of uncertain significance and their pathogenicity interpretation remains complicated. We aimed to investigate whether DMD missense variants would cause aberrant splicing and re-interpret their pathogenicity based on mRNA and protein studies.

View Article and Find Full Text PDF

Deep-intronic variants that create or enhance a splice site are increasingly reported as a significant cause of monogenic diseases. However, deep-intronic variants that activate pseudoexons by affecting a branch point are extremely rare in monogenic diseases. Here, we describe a novel deep-intronic DMD variant that created a branch point in a Duchenne muscular dystrophy (DMD) patient.

View Article and Find Full Text PDF

Bladder cancer is one of the most common malignant tumours of the urogenital system, with high morbidity and mortality. In most cases, surgery is considered the first choice of treatment, followed by adjuvant chemotherapy. However, the 5-year recurrence rate is still as high as 65% in patients with non-invasive or in situ tumours and up to 73% in patients with slightly more advanced disease at initial diagnosis.

View Article and Find Full Text PDF
Article Synopsis
  • The study looked at the differences in muscle tissue between two types of muscle diseases called Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) to find important markers related to muscle damage.
  • They analyzed samples from 101 male patients, performing tests to see how certain genes in their muscles are connected to muscle problems seen on MRI scans.
  • They discovered that one specific gene, CDKN2A, was linked to muscle damage and inflammation, showing that patients with DMD had much higher levels of this gene compared to BMD patients and healthy controls.
View Article and Find Full Text PDF

CGG repeat expansion in NOTCH2NLC is the genetic cause of neuronal intranuclear inclusion disease (NIID). Previous studies indicated that the CGG repeats can be translated into polyglycine protein (N2CpolyG) which was toxic to neurons by forming intranuclear inclusions (IIs). However, little is known about the factors governing polyG IIs formation as well as its molecular pathogenesis.

View Article and Find Full Text PDF

Background: An accurate genetic diagnosis of Becker muscular dystrophy (BMD) can be sometimes challenging due to deep intronic DMD variants. Here, we report on the genetic diagnosis of a BMD patient with a novel deep-intronic splice-altering variant in DMD.

Methods: The index case was a 3.

View Article and Find Full Text PDF

Injury to the renal tubular epithelium has emerged as a leading factor underlying the formation of kidney stones. Indeed, epithelial cell damage contributes to the adherence and aggregation of crystals, thereby accelerating the formation of renal stones. Meanwhile, exosomes play an instrumental role in cellular communication, including DNA, RNA, mRNA, etc.

View Article and Find Full Text PDF

We aimed to investigate the clinical, pathological, and genetic characteristics of Chinese female dystrophinopathy and to identify possible correlations among them. One hundred forty genetically and/or pathologically confirmed female DMD variant carriers were enrolled, including 104 asymptomatic carriers and 36 symptomatic carriers. Twenty of 36 symptomatic and 16 of 104 asymptomatic carriers were sporadic with no family history.

View Article and Find Full Text PDF

Hyperoxaluria-induced damage to renal tubular epithelial cells (RTECs) is considered the most significant contributor to kidney stone formation. However, the precise regulatory mechanism underlying this damage, particularly its association with mitophagy dysfunction, remains unclear. Additionally, effective preventive medications for kidney stones are lacking.

View Article and Find Full Text PDF

Exosomes play crucial roles in intercellular communication and are involved in the onset and progression of various types of cancers, including breast cancer. However, the RNA composition of breast cancer-derived exosomes has not been comprehensively explored. We conducted microarray assays on exosomes isolated from breast cancer and healthy breast epithelial cells from three patients with hormone receptor (HR) +/ human epidermal growth factor receptor (HER2) - breast cancer and identified 817 differentially expressed genes (DEGs).

View Article and Find Full Text PDF

The mutations of the feline leukemia virus subgroup C receptor-related protein 1 (FLVCR1) cause ataxia with retinitis pigmentosa. Recent studies indicated a large variation in the phenotype of FLVCR1-associated diseases. In this report, we describe an adult male who manifested first with tremors in his third decade, followed by retinitis pigmentosa, sensory ataxia, and sensory neuropathy in his fourth decade.

View Article and Find Full Text PDF