Article
Pharmacology & Pharmacy
Caroline Twarog, Fiona McCartney, Sabine M. Harrison, Brigitte Illel, Elias Fattal, David J. Brayden
Summary: SNAC and C-10 are intestinal permeation enhancers used in formulations of peptides for oral delivery in clinical trials. They have similar mechanisms of action in isolated rat intestinal mucosae, affecting mucosa integrity and interacting with intestinal mucus. Both enhancers have low toxicity and are in agreement with clinical trial data.
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
(2021)
Review
Pharmacology & Pharmacy
Sabrina Rahman Archie, Abdullah Al Shoyaib, Luca Cucullo
Summary: The blood-brain barrier is a crucial component of the central nervous system, maintaining brain homeostasis by controlling passage of substances. Regulated by a multicellular system, including endothelial cells, astrocytes, pericytes, and neurons, the BBB plays a role in the onset and progression of various neurological disorders.
Review
Pharmacology & Pharmacy
Rebekah Omarkhail Elliott, Mei He
Summary: Exosomes, a subgroup of nanovesicles, have emerged as a key player in cellular communication, disease understanding, and drug delivery. Recent studies have highlighted the critical roles of exosomes in crossing various biological barriers, opening up new possibilities for their application as delivery platforms.
Article
Cell Biology
Daniel Maucher, Birte Schmidt, Julia Schumann
Summary: Dysfunction of the endothelial barrier is central in inflammatory processes like sepsis and atherosclerosis. In this study, cytokine-induced weakening of the endothelial barrier was associated with changes in the transcriptome and upregulation of miR-29a-3p, miR-29b-3p, and miR-155-5p, which target central adhesion proteins' mRNAs. This suggests a posttranscriptional mechanism regulated by inflammatory cytokines.
Article
Immunology
Dylan Krajewski, Debayon Paul, Shujun Ge, Evan Jellison, Joel S. Pachter
Summary: In experimental autoimmune encephalomyelitis (EAE), claudin-5 (CLN-5) was found on leukocytes in the blood and central nervous system (CNS), potentially facilitating leukocyte transendothelial migration (TEM) across the blood-brain barrier. Flow cytometry analysis showed CLN-5(+) populations among various leukocyte subtypes, with higher levels in CNS tissue than in blood, suggesting preferential access to the CNS. This novel mechanism may guide leukocytes to sites for diapedesis across the BBB.
JOURNAL OF NEUROINFLAMMATION
(2021)
Article
Pharmacology & Pharmacy
Simona Federica Spampinato, Sara Merlo, Yasuteru Sano, Takashi Kanda, Maria Angela Sortino
Summary: Sphingosine 1 phosphate (S1P) is a bioactive sphingolipid with important physiological and pathological functions. The drug siponimod (BAF-312) has been approved for secondary progressive MS treatment by targeting S1P1 and S1P5 receptors, showing potential to strengthen BBB properties and provide additional effects for MS treatment.
BIOCHEMICAL PHARMACOLOGY
(2021)
Review
Pharmacology & Pharmacy
A. Amruta, Dalila Iannotta, Seth W. Cheetham, Twan Lammers, Joy Wolfram
Summary: In recent decades, there has been a significant increase in the development of nanodelivery systems for preclinical and clinical applications, particularly in delivering RNA and protein-based therapeutics. The specific vasculature of organs provides a promising avenue for targeted delivery of nanoparticles and extracellular vesicles to interstitial cells. This article emphasizes the properties of organ-specific vasculature, the strategies for nanodelivery that exploit the organotropism of vasculature, and the challenges and opportunities in targeting and overcoming the endothelial barrier. The impediments in the clinical translation of vasculature organotropism in drug delivery are also discussed.
ADVANCED DRUG DELIVERY REVIEWS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Yeon Kyeong Ko, Sujung Hong, Hyun Man Kim, Mengmeng Liu, Eunyoung Moon, Pilhan Kim, Youngnim Choi
Summary: The distribution and physiological significance of AJs and TJs in the gingival epithelium were characterized in this study. It was found that AJs and TJs form a discontinuous barrier throughout the epithelium and play a role in defending against invading bacteria.
JOURNAL OF PERIODONTAL RESEARCH
(2022)
Review
Cell Biology
Ece Bayir, Aylin Sendemir
Summary: The blood-brain barrier is a highly selective cellular monolayer unique to the central nervous system microvasculature, mediating communication with the body by regulating the passage of molecules. Recent studies have highlighted the importance of intermediate filaments in the formation and function of cell-cell junctions, particularly vimentin in endothelial cells. Intermediate filaments may have been overlooked as key targets in regulating blood-brain barrier permeability in health and disease.
Article
Chemistry, Physical
Tianqi Nie, Zhiyu He, Jinchang Zhu, Kuntao Chen, Gregory P. Howard, Jesus Pacheco-Torres, Il Minn, Pengfei Zhao, Zaver M. Bhujwalla, Hai-Quan Mao, Lixin Liu, Yongming Chen
Summary: A non-invasive method involving sub-50 nm nanoparticles loaded with L-DOPA was successfully developed to deliver the drug to the brain through brain-lymphatic vasculature. Pharmacodynamics analysis in a PD rat model showed significant improvement in dopamine and tyrosine hydroxylase levels, along with movement disorders and cerebral oxidative stress. The formulation exhibited high biocompatibility and holds promise for clinical treatment of Parkinson's disease.
Article
Developmental Biology
Tevin C. Y. Chau, Mikaela S. Keyser, Jason A. Da Silva, Elysse K. Morris, Teodor E. Yordanov, Kinga P. Duscyz, Scott Paterson, Alpha S. Yap, Benjamin M. Hogan, Anne Karine Lagendijk
Summary: This study reveals the critical role of integrin adaptor protein in vascular morphogenesis, highlighting its key functions in EC elongation and junction linearisation. It also points out the significance of FAs in regulating cell morphology and vascular permeability.
Review
Chemistry, Analytical
Tatsuro Goda
Summary: Potentiometric pH measurements have been long utilized for the bioanalysis of biofluids, tissues, and cells. The interpretation of passive pH sensing signals can be difficult, and time course measurements may suffer from stability issues. To address these challenges, an active pH sensing method was developed for in vitro cell barrier analysis, enabling molecular-level analysis of cell-nanomaterial interactions.
Article
Pharmacology & Pharmacy
Caroline Twarog, Elias Fattal, Magali Noiray, Brigitte Illel, David J. Brayden, Myriam Taverna, Herve Hillaireau
Summary: This study compares the biophysical interactions between exenatide and C-10 or SNAC, finding that specific supramolecular structures are formed and non-specific interactions dominate the binding process. Bile salts in the gastrointestinal lumen inhibit the interaction between these permeation enhancers and exenatide.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Medicine, Research & Experimental
Huyen Tran, Eitaro Aihara, Faiz Ahmad Mohammed, Hongchang Qu, Andrew Riley, Yuan Su, Xianyin Lai, Siyuan Huang, Aktham Aburub, Jack Jia Hua Chen, Olivia Hope Vitale, Yanbin Lao, Selina Estwick, Zhonghua Qi, Mohamed E. H. ElSayed
Summary: This study evaluated the effects of C10 on the intestinal absorption of peptides with different physicochemical properties and its permeation-enhancing effect in vivo. The results showed that C10 can improve the intestinal absorption of the LY peptide and exert its effects through mechanisms such as reducing tight junction protein levels and increasing membrane fluidity.
MOLECULAR PHARMACEUTICS
(2023)
Review
Cell Biology
Jun Sun, Yong-Guo Zhang
Summary: VDR plays a crucial role in the biological functions of vitamin D and acts as a transcriptional factor regulating the expression of target genes; Research shows that VDR regulation of intestinal barriers influences health and disease; Understanding the mechanisms by which VDR signaling regulates intestinal barrier functions can help develop efficient therapeutic strategies for human diseases.
Article
Biochemical Research Methods
Aline Silva da Cruz, Maria Margarida Drehmer, Wagner Baetas-da-Cruz, Joao Carlos Machado
Summary: This study quantified microcirculation cerebral blood flow in a rat model of ischemic stroke using ultrasound biomicroscopy and ultrasound contrast agents. The results showed high sensitivity and specificity of this method, making it a valuable tool for preclinical studies.
JOURNAL OF NEUROSCIENCE METHODS
(2024)
Article
Biochemical Research Methods
Christina Dalla, Ivana Jaric, Pavlina Pavlidi, Georgia E. Hodes, Nikolaos Kokras, Anton Bespalov, Martien J. Kas, Thomas Steckler, Mohamed Kabbaj, Hanno Wuerbel, Jordan Marrocco, Jessica Tollkuhn, Rebecca Shansky, Debra Bangasser, Jill B. Becker, Margaret McCarthy, Chantelle Ferland-Beckham
Summary: Many funding agencies have emphasized the importance of considering sex as a biological variable in experimental design to improve the reproducibility and translational relevance of preclinical research. Omitting the female sex from experimental designs in neuroscience and pharmacology can result in biased or limited understanding of disease mechanisms. This article provides methodological considerations for incorporating sex as a biological variable in in vitro and in vivo experiments, including the influence of age and hormone levels, and proposes strategies to enhance methodological rigor and translational relevance in preclinical research.
JOURNAL OF NEUROSCIENCE METHODS
(2024)
Article
Biochemical Research Methods
Wenyu Gu, Dongxu Li, Jia-Hong Gao
Summary: We developed a precise and rapid method for positioning and labelling triaxial OPMs on a wearable magnetoencephalography (MEG) system, improving the efficiency of OPM positioning and labelling.
JOURNAL OF NEUROSCIENCE METHODS
(2024)
Article
Biochemical Research Methods
Kai Lin, Linhang Zhang, Jing Cai, Jiaqi Sun, Wenjie Cui, Guangda Liu
Summary: The article introduces an EEG feature map processing model for emotion recognition, which achieves significantly improved accuracy by fusing EEG information at different spatial scales and introducing a channel attention mechanism.
JOURNAL OF NEUROSCIENCE METHODS
(2024)
Article
Biochemical Research Methods
John E. Parker, Asier Aristieta, Aryn H. Gittis, Jonathan E. Rubin
Summary: This work presents a toolbox that implements a methodology for automated classification of neural responses based on spike train recordings. The toolbox provides a user-friendly and efficient approach to detect various types of neuronal responses that may not be identified by traditional methods.
JOURNAL OF NEUROSCIENCE METHODS
(2024)
Article
Biochemical Research Methods
Yun Liang, Ke Bo, Sreenivasan Meyyappan, Mingzhou Ding
Summary: This study compared the performance of SVM and CNN on the same datasets and found that CNN achieved consistently higher classification accuracies. The classification accuracies of SVM and CNN were generally not correlated, and the heatmaps derived from them did not overlap significantly.
JOURNAL OF NEUROSCIENCE METHODS
(2024)
Article
Biochemical Research Methods
Antonino Visalli, Maria Montefinese, Giada Viviani, Livio Finos, Antonino Vallesi, Ettore Ambrosini
Summary: This study introduces an analytical strategy that allows the use of mixed-effects models (LMM) in mass univariate analyses of EEG data. The proposed method overcomes the computational costs and shows excellent performance properties, making it increasingly important in the field of neuroscience.
JOURNAL OF NEUROSCIENCE METHODS
(2024)
Article
Biochemical Research Methods
Xavier Cano-Ferrer, Alexandra Tran -Van -Minh, Ede Rancz
Summary: This study developed a novel rotation platform for studying neural processes and spatial navigation. The platform is modular, affordable, and easy to build, and can be driven by the experimenter or animal movement. The research demonstrated the utility of the platform, which combines the benefits of head fixation and intact vestibular activity.
JOURNAL OF NEUROSCIENCE METHODS
(2024)