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Topic Review
Transjugular Intrahepatic Portosystemic Shunt toward Liver Transplant
Liver transplantation is currently the only curative therapy for patients with liver cirrhosis. Not all patients in the natural course of the disease will undergo transplantation, but the majority of them will experience portal hypertension and its complications. In addition to medical and endoscopic therapy, a key role in managing these complications is played by the placement of a transjugular intrahepatic portosystemic shunt (TIPS). Some indications for TIPS placement are well-established, and they are expanding and broadening over time. 
  • 226
  • 12 Mar 2024
Topic Review
Transient Transfection of Schistosomes
The neglected tropical disease schistosomiasis is a worm infection that is caused by parasitic blood flukes. The disease is found in sub-Saharan Africa, the Middle East, Southeast Asia, and the New World. Worldwide, 240 million people are infected, and 700 million people are at risk. Schistosomiasis is a debilitating, chronic disease, and the mortality is estimated at 200,000 deaths per year. Schistosomiasis control relies on the drug praziquantel, but it does not prevent reinfection after treatment. The development of new vaccines, drugs, and diagnostic methods and the investigation of the biological basis of infectivity are, therefore, of critical importance. The development of transgenesis systems, as have been used for other pathogens, has been hampered by the complexity of the parasite and its life cycle.
  • 304
  • 26 Jan 2024
Topic Review
Transient Receptor Potential Cation 6
Ischemic stroke is one of the most disabling diseases and a leading cause of death globally. Despite advances in medical care, the global burden of stroke continues to grow, as no effective treatments to limit or reverse ischemic injury to the brain are available. However, recent preclinical findings have revealed the potential role of transient receptor potential cation 6 (TRPC6) channels as endogenous protectors of neuronal tissue. Activating TRPC6 in various cerebral ischemia models has been found to prevent neuronal death, whereas blocking TRPC6 enhances sensitivity to ischemia. Evidence has shown that Ca2+ influx through TRPC6 activates the cAMP (adenosine 3’,5’-cyclic monophosphate) response element-binding protein (CREB), an important transcription factor linked to neuronal survival.
  • 619
  • 03 Mar 2021
Topic Review
Transient Receptor Potential Ankyrin 1
The transient receptor potential ankyrin 1 (TRPA1), a member of the TRP superfamily of channels, is primarily localized in a subpopulation of primary sensory neurons of the trigeminal, vagal, and dorsal root ganglia, where its activation mediates neurogenic inflammatory responses. TRPA1 expression in resident tissue cells, inflammatory, and immune cells, through the indirect modulation of a large series of intracellular pathways, orchestrates a range of cellular processes, such as cytokine production, cell differentiation, and cytotoxicity. 
  • 708
  • 05 May 2022
Topic Review
Transient Nuclear Envelope Rupture during Metastasis
Metastasis is the process that allows the seeding of tumor cells in a new organ. The migration and invasion of cancer cells involves the pulling, pushing, and squeezing of cells through narrow spaces and pores. Tumor cells need to cross several physical barriers, such as layers of basement membranes as well as the endothelium wall during the way in and out of the blood stream, to reach the new organ.
  • 452
  • 10 Feb 2022
Topic Review
Transience of the Retinal Output and Circuit Elements
Retinal ganglion cells (RGCs) encrypt stimulus features of the visual scene in action potentials and convey them toward higher visual centers in the brain. Although there are many visual features to encode, the recent understanding is that the ~46 different functional subtypes of RGCs in the retina share this task. In this scheme, each RGC subtype establishes a separate, parallel signaling route for a specific visual feature (e.g., contrast, the direction of motion, luminosity), through which information is conveyed. The efficiency of encoding depends on several factors, including signal strength, adaptational levels, and the actual efficacy of the underlying retinal microcircuits. Upon collecting inputs across their respective receptive field, RGCs perform further analysis (e.g., summation, subtraction, weighting) before they generate the final output spike train, which itself is characterized by multiple different features, such as the number of spikes, the inter-spike intervals, response delay, and the rundown time (transience) of the response. These specific kinetic features are essential for target postsynaptic neurons in the brain in order to effectively decode and interpret signals, thereby forming visual perception.
  • 508
  • 11 Mar 2022
Topic Review
Transglutaminase 2
Transglutaminase 2 (TG2) is a ubiquitously expressed enzyme catalyzing the crosslinking between Gln and Lys residues and involved in various pathophysiological events. Besides this crosslinking activity, TG2 functions as a deamidase, GTPase, isopeptidase, adapter/scaffold, protein disulfide isomerase, and kinase. It also plays a role in the regulation of hypusination and serotonylation.
  • 1.2K
  • 11 Aug 2021
Topic Review Video
Transgenerational-Epigenetic Inheritance and Immune System
Epigenetic modifications cause heritable changes in gene expression which are not due to alterations in underlying DNA sequence. Inside the eukaryotic nucleus, there is condense packing of DNA around histone proteins to constitute chromatin structure. Epigenetic modifications are caused by factors that alter chromatin structure. Some epigenetic factors are enzymes that regulate DNA methylation and histone modifications, non-coding RNA, and prions. An offspring inherits parental epigenetic modifications but most of them are deleted and reset during early developmental stages. Some epigenetic modifications are retained and persist across multiple generations. If any epigenetic modification is the result of a stimulus or immune response in one generation, such that the modification continues to be inherited in subsequent generations which are not subjected to the stimulus; and the inheritance continues beyond the 3rd generation in the female germline and 2nd generation in male, then the phenomenon is called transgenerational epigenetic inheritance (TGEI). This entry is focused on a review which discusses some examples of TGEI that are reported in association with  immune system development and disorders.
  • 750
  • 22 May 2021
Topic Review
Transgenderizations of the Collective Psyche of Humanity
The evolving collective psyche of humanity reveals a shift from predominantly masculine to increasingly feminine characteristics since around 1500 A.D. This transformation, termed 'transgenderization,' is attributed to identified psychological factors. Remarkably, the collective psyche has undergone similar transitions in the past since the emergence of humanity.
  • 214
  • 21 Feb 2024
Topic Review
Transforming Growth Factor-Beta in Skeletal Muscle Wasting
Transforming growth factor (TGF)-β is the name for a superfamily of proteins, including myostatin, that functions in the body to affect growth and to stimulate the inflammatory response along with other functions covered elsewhere. TGF-β in skeletal muscle not only contributed to muscle fibrosis in Duchenne Muscular Dystrophy (DMD) disease, but also promoted skeletal muscle atrophy by decreasing muscle fiber diameter and amounts of heavy chain myosin (MHC) in muscle tissue. 
  • 587
  • 28 Mar 2022
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