Biol Proced Online
September 2024
Background: Breast cancer poses a significant health risk to women worldwide, with approximately 30% being diagnosed annually in the United States. The identification of cancerous mammary tissues from non-cancerous ones during surgery is crucial for the complete removal of tumors.
Results: Our study innovatively utilized machine learning techniques (Random Forest (RF), Support Vector Machine (SVM), and Convolutional Neural Network (CNN)) alongside Raman spectroscopy to streamline and hasten the differentiation of normal and late-stage cancerous mammary tissues in mice.
Background: The COVID-19 pandemic is becoming one of the largest, unprecedented health crises, and chest X-ray radiography (CXR) plays a vital role in diagnosing COVID-19. However, extracting and finding useful image features from CXRs demand a heavy workload for radiologists.
Objective: The aim of this study was to design a novel multiple-inputs (MI) convolutional neural network (CNN) for the classification of COVID-19 and extraction of critical regions from CXRs.
Modeling and prediction of psychological disorders is a hot topic in current research. Neural networks are very important factors in improving the accuracy and precision ratios of the models which are developed for the prediction of the psychological disorders. An upgraded neural network prediction model of psychological diseases was suggested in order to attain an optimum prediction effect of psychological disorders.
View Article and Find Full Text PDFThe reproductive compromise under heat stress is a major obstacle to achieve high grain yield and quality in wheat worldwide. Securing reproductive success is the key solution to sustain wheat productivity by understanding the physiological mechanism and molecular basis in conferring heat tolerance and utilizing the candidate gene resources for breeding. In this study, we examined the performance on both carbon supply source (as leaf photosynthetic rate) and carbon sink intake (as grain yields and quality) in wheat under heat stress varying with timing, duration, and intensity, and we further surveyed physiological processes from source to sink and the associated genetic basis in regulating reproductive thermotolerance; in addition, we summarized the quantitative trait loci (QTLs) and genes identified for heat stress tolerance associated with reproductive stages.
View Article and Find Full Text PDFThe early detection of laryngeal cancer significantly increases the survival rates, permits more conservative larynx sparing treatments, and reduces healthcare costs. A non-invasive optical form of biopsy for laryngeal carcinoma can increase the early detection rate, allow for more accurate monitoring of its recurrence, and improve intraoperative margin control. In this study, we evaluated a Raman spectroscopy system for the rapid intraoperative detection of human laryngeal carcinoma.
View Article and Find Full Text PDFPancreatic cancer is the deadliest cancer type with a five-year survival rate of less than 9%. Detection of tumor margins plays an essential role in the success of surgical resection. However, histopathological assessment is time-consuming, expensive, and labor-intensive.
View Article and Find Full Text PDFViral infection triggers host defenses through pattern-recognition receptor-mediated cytokine production, inflammasome activation, and apoptosis of the infected cells. Inflammasome-activated caspases are known to cleave cyclic GMP-AMP synthase (cGAS). Here, we found that apoptotic caspases are critically involved in regulating both DNA and RNA virus-triggered host defenses, in which activated caspase-3 cleaved cGAS, MAVS, and IRF3 to prevent cytokine overproduction.
View Article and Find Full Text PDFMitochondrial antiviral-signaling protein (MAVS) transmits signals from RIG-I-like receptors after RNA virus infections. However, the mechanism by which MAVS activates downstream components, such as TBK1 and IKKα/β, is unclear, although previous work suggests the involvement of NEMO or TBK1-binding proteins TANK, NAP1, and SINTBAD. Here, we report that MAVS-mediated innate immune activation is dependent on TRAFs, partially on NEMO, but not on TBK1-binding proteins.
View Article and Find Full Text PDFCytosolic dsDNA activates the cyclic GMP-AMP synthase (cGAS)-stimulator of IFN genes (STING) pathway to produce cytokines, including type I IFNs. The roles of many critical proteins, including NEMO, IKKβ, and TBK1, in this pathway are unclear because of the lack of an appropriate system to study. In this article, we report that lower FBS concentrations in culture medium conferred high sensitivities to dsDNA in otherwise unresponsive cells, whereas higher FBS levels abrogated this sensitivity.
View Article and Find Full Text PDFSpontaneously occurring lymphomas in SJL mice have many pathological features similar to Hodgkin's lymphoma in humans. The malignant growth of the tumor cells is dependent on the support of host FoxP3(+)CD4(+) regulatory T cells (Tregs). In this study, we report that the ablation of golli protein, a negative regulator of CRAC (calcium release activated calcium) channel, in SJL mice results in an accelerated progression of Hodgkin's-like lymphoma which is accompanied by a facilitated conversion of FoxP3(+) Treg cells.
View Article and Find Full Text PDFJ Agric Food Chem
November 2014
A series of aromatic gossypol Schiff bases have been successfully synthesized via a feasible chemical modification. The antiviral activity against tobacco mosaic virus (TMV) of these gossypol Schiff bases has been tested for the first time. The bioassay studies indicated most of these derivatives exhibited excellent anti-TMV activity, in which o-trifluoromethylaniline Schiff base (19) displayed the best antiviral activities.
View Article and Find Full Text PDFElevations in the intracellular Ca(2+) concentration are a phenomena commonly observed during stem cell differentiation but cease after the process is complete. The transient receptor potential melastatin 4 (TRPM4) is an ion channel that controls Ca(2+) signals in excitable and nonexcitable cells. However, its role in stem cells remains unknown.
View Article and Find Full Text PDFThe neuropeptide vasoactive intestinal peptide (VIP) has been shown to inhibit macrophage proinflammatory actions, promote a positive Th2/Th1 balance, and stimulate regulatory T-cell production. The fact that this peptide is highly efficacious in animal models of inflammatory diseases such as collagen-induced arthritis and experimental autoimmune encephalomyelitis (EAE) suggests that the endogenous peptide might normally provide protection against such pathologies. We thus studied the response of VIP-deficient (i.
View Article and Find Full Text PDFInterleukin-15 (IL15) is a cytokine produced by normal brain, but the functions of the IL15 system in normal adults are not yet clear. The hypothesis that the hippocampal IL15 system is essential for memory consolidation was tested by use of IL15Ralpha knock-out mice in behavioral, biochemical, immunohistological, and electron microscopic analyses. The knock-out mice showed deficits in memory, determined by the Stone T-maze and fear conditioning.
View Article and Find Full Text PDFThe transient receptor potential melastatin type 7 channel (TRPM7) is a member of the TRP family of ion channels that is essential for cell proliferation and viability. Mesenchymal stem cells (MSCs) from bone marrow are a potential source for tissue repair due to their ability to differentiate into specialized cells. However, the role of TRPM7 in stem cells is unknown.
View Article and Find Full Text PDFEffector/memory T cells (Tem) are required to maintain successful immunity, while regulatory T cells (Treg) are required to prevent excessive/uncontrolled inflammation and/or autoimmunity. Although both Tem and Treg cells are increased during aging, the relationship between the increased proportion of Foxp3(+) Treg cells and CD44(+) Tem cells with aging is not clearly understood. We found in this report that Foxp3(+) Treg cells are increased in parallel with CD44(+) Tem cells in SJL/J mice with aging, and that all Foxp3(+) Treg cells are of CD44(+) Tem phenotype, suggesting that the increased Foxp3(+) Treg cells originated from the expanded pool of CD44(+) Tem cells with aging.
View Article and Find Full Text PDFThe myelin basic protein (MBP) gene encodes two families of proteins: the classic MBP constituents of myelin and the golli-MBPs, the function of which is less well understood. Previous work suggests that golli proteins may play a role in Ca2+ homeostasis in oligodendrocytes (OLs) and in T-cells. Overexpression of golli in OL cell lines induces elaboration of sheets and processes.
View Article and Find Full Text PDFIn this minireview, the author briefly reviews the development of our understanding on the immunological function of golli proteins. In the immune system, in addition to serving as autoantigens, golli proteins have been recently found to regulate T-cell activation directly, thus modulating EAE induction. The evidence that golli proteins function as signal molecules is summarized.
View Article and Find Full Text PDFCalcium influx is crucial for T cell activation and differentiation. The detailed regulation of this process remains unclear. We report here that golli protein, an alternatively spliced product of the myelin basic protein gene, plays a critical role in regulating calcium influx in T cells.
View Article and Find Full Text PDFThe myelin basic protein (MBP) gene encodes two families of proteins, the classic MBP constituents of myelin and the golli-MBPs, the function of which is less well understood. In this study, targeted ablation of the golli-MBPs, but not the classic MBPs, resulted in a distinct phenotype unlike that of knock-outs (KOs) of the classic MBPs or other myelin proteins. Although the golli KO animals did not display an overt dysmyelinating phenotype, they did exhibit delayed and/or hypomyelination in selected areas of the brain, such as the visual cortex and the optic nerve, as determined by Northern and Western blots and immunohistochemical analysis with myelin protein markers.
View Article and Find Full Text PDFLin Chuang Er Bi Yan Hou Ke Za Zhi
March 2005
Objective: To study the effect of uvulopalatopharyngoplasty (UPPP) by using microwave on obstructive sleep apnea-hypopnea syndrome (OSAHS) with Velo-pharyngeal obstruction.
Method: Sixty-one cases who were diagnosed as OSAHS with Velo-pharyngeal obstruction were performed UPPP by using microwave, among which 9 cases received microwave palatopharyngoplasty only. Thirty-six cases underwent bilateral palatine tonsillectomy and another 16 cases underwent bilateral palatine tonsillectomy and tongue base microwave ablation apart from microwave pharyngoplasty.
Protein kinase C (PKC) plays a critical role in signal transduction controlling T lymphocyte activation. Both positive and negative regulation of signal transduction is needed for proper control of T lymphocyte activation. We have found that a golli product of the myelin basic protein (MBP) gene can serve as a negative regulator of signaling pathways in the T lymphocyte, particularly the PKC pathway.
View Article and Find Full Text PDFThe myelin basic protein (MBP) gene encodes the classic MBPs and the golli proteins, which are related structurally to the MBPs but are not components of the myelin sheath. A yeast two-hybrid approach was used to identify molecular partners that interact with the golli proteins. A mouse cDNA was cloned that encoded a protein of 261 amino acids and called golli-interacting protein (GIP).
View Article and Find Full Text PDFA new family of the myelin proteolipid protein (PLP/DM20) gene products, srPLP/DM20, has been identified recently in thymus and brain. In the central nervous system, srPLP/DM20 products are not localized in the myelin membrane, unlike their classic PLP/DM20 counterparts. In the immune system, the classic PLP/DM20 products appear to be expressed predominantly in thymic cortical epithelium.
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