Publications by authors named "Kaifang Pang"

Objective: To investigate the effect of sacubitril/valsartan (ARNI) combined with cardiac rehabilitation (CR) in patients with heart failure (HF) after acute myocardial infarction (AMI).

Methods: A total of 118 patients with HF after AMI were screened and randomly divided into an experimental group and a control group. The control group was given ARNI.

View Article and Find Full Text PDF

The molecular mechanisms and evolutionary changes accompanying synapse development are still poorly understood. Here we generate a cross-species proteomic map of synapse development in the human, macaque and mouse neocortex. By tracking the changes of more than 1,000 postsynaptic density (PSD) proteins from midgestation to young adulthood, we find that PSD maturation in humans separates into three major phases that are dominated by distinct pathways.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the two proteins, CYFIP1 and CYFIP2, which have similar structures but different functions in the brain and are linked to various brain disorders.
  • Experiments show that these proteins do not interact significantly with each other and have distinct distributions in brain cells, with CYFIP1 found in both neurons and astrocytes while CYFIP2 is primarily in neurons.
  • Analysis of the proteins they interact with indicates that CYFIP1 is specifically associated with astrocytic focal adhesion, suggesting a unique role for CYFIP1 in brain function that differs from CYFIP2.
View Article and Find Full Text PDF

Objective: To investigate the effects of sacubitril/valsartan (S/V) on cardiopulmonary function and blood pressure response to exercise during hospitalization in patients with acute myocardial infarction (AMI) based on the cardiopulmonary exercise test (CPET).

Methods: A total of 265 AMI patients were treated with either perindopril or S/V within 24 hours of admission. CPET was completed for all patients before discharge.

View Article and Find Full Text PDF
Article Synopsis
  • MeCP2 is linked to Rett syndrome and other conditions like autism and intellectual disabilities, but how it causes these diseases is still unclear.
  • Researchers discovered that a protein complex involving TCF20 interacts with MeCP2, and mutations in MeCP2 disrupt this interaction, which can lead to disease.
  • The study also shows that disruptions in the interactions between MeCP2 and the TCF20 complex can result in neurological issues, highlighting their importance for proper brain function.
View Article and Find Full Text PDF

Deletion 1p36 (del1p36) syndrome is the most common human disorder resulting from a terminal autosomal deletion. This condition is molecularly and clinically heterogeneous. Deletions involving two non-overlapping regions, known as the distal (telomeric) and proximal (centromeric) critical regions, are sufficient to cause the majority of the recurrent clinical features, although with different facial features and dysmorphisms.

View Article and Find Full Text PDF

Identifying modifiers of dosage-sensitive genes involved in neurodegenerative disorders is imperative to discover novel genetic risk factors and potential therapeutic entry points. In this study, we focus on Ataxin-1 (), a dosage-sensitive gene involved in the neurodegenerative disease spinocerebellar ataxia type 1 (SCA1). While the precise maintenance of ATXN1 levels is essential to prevent disease, the mechanisms that regulate expression remain largely unknown.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the effects of genetic variants of CYFIP2, a protein linked to brain disorders like intellectual disability and epilepsy, using Cyfip2 heterozygous mice.
  • Researchers conducted various analyses, revealing that these mice displayed abnormal behaviors and increased neuron excitability, particularly in layer 5 of the prefrontal cortex (PFC).
  • Potential treatment with lithium was shown to normalize some of these neurobehavioral issues, shedding light on the underlying neuronal dysfunction associated with CYFIP2-related brain disorders.
View Article and Find Full Text PDF

A large number of genes have been implicated in neurodevelopmental disorders (NDDs), but their contributions to NDD pathology are difficult to decipher without understanding their diverse roles in different brain cell types. Here, we integrated NDD genetics with single-cell RNA sequencing data to assess coexpression enrichment patterns of various NDD gene sets. We identified midfetal cortical neural progenitor cell development-more specifically, the ventricular radial glia-to-intermediate progenitor cell transition at gestational week 10-as a key point of convergence in autism spectrum disorder (ASD) and epilepsy.

View Article and Find Full Text PDF

The bromodomain adjacent to zinc finger 2B gene (BAZ2B) encodes a protein involved in chromatin remodeling. Loss of BAZ2B function has been postulated to cause neurodevelopmental disorders. To determine whether BAZ2B deficiency is likely to contribute to the pathogenesis of these disorders, we performed bioinformatics analyses that demonstrated a high level of functional convergence during fetal cortical development between BAZ2B and genes known to cause autism spectrum disorder (ASD) and neurodevelopmental disorder.

View Article and Find Full Text PDF

Neurons are sensitive to changes in the dosage of many genes, especially those regulating synaptic functions. Haploinsufficiency of SHANK3 causes Phelan-McDermid syndrome and autism, whereas duplication of the same gene leads to SHANK3 duplication syndrome, a disorder characterized by neuropsychiatric phenotypes including hyperactivity and bipolar disorder as well as epilepsy. We recently demonstrated the functional modularity of Shank3, which suggests that normalizing levels of Shank3 itself might be more fruitful than correcting pathways that function downstream of it for treatment of disorders caused by alterations in SHANK3 dosage.

View Article and Find Full Text PDF

Genome sequencing has revealed an increasing number of genetic variations that are associated with neuropsychiatric disorders. Frequently, studies limit their focus to likely gene-disrupting mutations because they are relatively easy to interpret. Missense variants, instead, have often been undervalued.

View Article and Find Full Text PDF

Discriminating transcriptional changes that drive disease pathogenesis from nonpathogenic and compensatory responses is a daunting challenge. This is particularly true for neurodegenerative diseases, which affect the expression of thousands of genes in different brain regions at different disease stages. Here we integrate functional testing and network approaches to analyze previously reported transcriptional alterations in the brains of Huntington disease (HD) patients.

View Article and Find Full Text PDF

15q13.3 microdeletion syndrome is characterized by a wide spectrum of neurodevelopmental disorders, including developmental delay, intellectual disability, epilepsy, language impairment, abnormal behaviors, neuropsychiatric disorders, and hypotonia. This syndrome is caused by a deletion on chromosome 15q, which typically encompasses six genes.

View Article and Find Full Text PDF

Bipolar disorder (BD), characterized by recurrent mood swings between depression and mania, is a highly heritable and devastating mental illness with poorly defined pathophysiology. Recent genome-wide molecular genetic studies have identified several protein-coding genes and microRNAs (miRNAs) significantly associated with BD. Notably, some of the proteins expressed from BD-associated genes function in neuronal synapses, suggesting that abnormalities in synaptic function could be one of the key pathogenic mechanisms of BD.

View Article and Find Full Text PDF
Article Synopsis
  • The SHANK3 gene is crucial for neuronal function, and improper gene dosage is linked to various neuropsychiatric disorders, including autism and schizophrenia.
  • Researchers found that three specific microRNAs (miR-7, miR-34a, and miR-504) play a role in regulating SHANK3 expression, with altered levels of these miRNAs observed in some disorders.
  • miR-504 particularly had a strong impact on SHANK3 expression and dendritic spine formation, suggesting that changes in miRNA levels may contribute to neuropsychiatric conditions through their effect on SHANK3.
View Article and Find Full Text PDF

FOXG1 is a transcription factor that interacts with multiple signaling pathways and modulates neuronal differentiation in the telencephalon. Dysregulation of FOXG1 expression has been previously reported in medulloblastoma. In this study, we demonstrate a regional specific expression of FOXG1 and its colocalization with Nestin expression in the premigratory mitotically active (outer) layer of the external granular layer of the cerebellum.

View Article and Find Full Text PDF

Background: Selecting genes and pathways indicative of disease is a central problem in computational biology. This problem is especially challenging when parsing multi-dimensional genomic data. A number of tools, such as L1-norm based regularization and its extensions elastic net and fused lasso, have been introduced to deal with this challenge.

View Article and Find Full Text PDF

Motivation: Combinatorial therapies play increasingly important roles in combating complex diseases. Owing to the huge cost associated with experimental methods in identifying optimal drug combinations, computational approaches can provide a guide to limit the search space and reduce cost. However, few computational approaches have been developed for this purpose, and thus there is a great need of new algorithms for drug combination prediction.

View Article and Find Full Text PDF

Background: Cellular heterogeneity is present in almost all gene expression profiles. However, transcriptome analysis of tissue specimens often ignores the cellular heterogeneity present in these samples. Standard deconvolution algorithms require prior knowledge of the cell type frequencies within a tissue or their in vitro expression profiles.

View Article and Find Full Text PDF
Article Synopsis
  • Proper neurological function relies on the precise regulation of the protein MeCP2, which is crucial in the human brain, especially during development.
  • The microRNA miR-483-5p, linked to the IGF2 gene, has been identified as a regulator of MeCP2 levels by targeting a specific region in the long 3' UTR of the MECP2 gene.
  • This study shows that higher levels of miR-483-5p are associated with lower levels of MeCP2 in developing brains, suggesting its potential in correcting abnormal neuron structures linked to MeCP2 overexpression.
View Article and Find Full Text PDF
Article Synopsis
  • The study examines how protein-protein interaction degree (PPID) impacts the rate of protein evolution, revealing that the correlation can differ based on the datasets used for analysis.
  • Researchers introduced a new measure called co-expressed protein-protein interaction degree (ePPID), which provides a more consistent and dependable prediction of protein evolutionary rates compared to traditional PPID methods.
  • The findings indicate that ePPID remains a strong predictor regardless of the experimental methods used and emphasizes the significance of permanent protein interactions in influencing evolutionary processes.
View Article and Find Full Text PDF

The centrality-lethality rule, i.e., high-degree proteins or hubs tend to be more essential than low-degree proteins in the yeast protein interaction network, reveals that a protein's central position indicates its important function, but whether and why hubs tend to be more essential have been heavily debated.

View Article and Find Full Text PDF