Antibodies have been attracting attention as therapeutic tools owing to their high affinity and specificity. To develop potent antibodies, affinity maturation, epitope regulation, and using target antigens in native form are pivotal requirements. Here we describe a method to conduct epitope-directed affinity maturation of antibodies using engineered mammalian cells. This method utilizes protein chimeras that transduce cell death signaling in response to antibody binding. As the competition of antibody binding inhibits the cell death signaling, only affinity-matured antibodies retaining the same epitope as an original one can be selected using cell survival as readout.Diabetes mellitus is a complex metabolic disease characterized by chronically deregulated blood-glucose levels. To restore glucose homeostasis, therapeutic strategies allowing well-controlled production and release of insulinogenic hormones into the blood circulation are required. In this chapter, we describe how mammalian cells can be engineered for applications in diabetes treatment. While closed-loop control systems provide automated and self-sufficient synchronization of glucose sensing and drug production, drug production in open-loop control systems is engineered to depend on exogenous user-defined trigger signals. Rational, robust, and reliable manufacture practices for mammalian cell engineering are essential for industrial-scale mass-production in view of clinical and commercial applications.Synthetic receptors control cell behavior in response to environmental stimuli for applications in basic research and cell therapy. However, the integration of synthetic receptors in unexplored contexts is cumbersome, especially for nonspecialist laboratories. Here, I provide a detailed protocol on how to use receptors of the generalized extracellular molecule sensor (GEMS) platform. GEMS is a modular receptor system that can be adapted to sense molecules of choice by using affinity domains that dimerize in response to the target. GEMS consist of an erythropoietin receptor scaffold that has been mutated to no longer bind to erythropoietin. N-terminal fusions with affinity domains, such as single chain variable fragments (scFvs), that bind to two epitopes on the same target activate the receptor. The intracellular receptor domain can be chosen from several signal transduction domains of single-pass transmembrane receptors to activate endogenous signaling pathways. As of now, GEMS have been used for sensing proors in new research contexts.CAR-T cell therapy is one of the most successful cell-based therapies. T cells are the most common cells to be genetically modified for cancer therapy, not only because T cells have cytotoxicity but also because they are easily cultured ex vivo and genetically modified with viral vectors. Hence, for nonexperts, T cell engineering is an ideal starting point for mammalian cell engineering or for development of therapeutics. Here, we have described a basic procedure for lentiviral transduction of human primary T cells to generate a CAR-T cell and assays to confirm CAR expression and function.Prolonged-release (PR; as ascribed in the EU) or extended-release (as ascribed in the USA) bupivacaine/meloxicam (HTX-011; hereafter referred to as bupivacaine/meloxicam PR; Zynrelef®) is a synergistic fixed-dose combination (FDC) of the local anaesthetic bupivacaine and the NSAID meloxicam. It is approved in the EU and the USA to treat postoperative pain. After needle-free application at the surgical site, the novel polymer technology allows simultaneous diffusion of bupivacaine and meloxicam over 72 h. In clinical trials, bupivacaine/meloxicam PR significantly reduced postoperative pain and opioid consumption relative to bupivacaine hydrochloride (HCl) and placebo in patients undergoing bunionectomy, herniorrhaphy or total knee arthroplasty (TKA). When used as the foundation of a scheduled non-opioid multimodal analgesia (MMA) regimen, bupivacaine/meloxicam PR further improved pain control and reduced the need for opioids following surgery. Bupivacaine/meloxicam PR was generally well tolerated, with a lower incidence of opioid-related adverse events than bupivacaine HCl and placebo. Although additional data would be beneficial, current evidence indicates that bupivacaine/meloxicam PR is a promising non-opioid treatment option for the management of postoperative pain.
Value-based healthcare is being extensively piloted, scaled and implemented by healthcare providers and systems around the world. However, the ability of the healthcare supply chain function to strategically contribute to the improvement of value has been held back by a lack of practical tools for turning value-based procurement from concept into action. https://www.selleckchem.com/products/3-methyladenine.html Two recently developed conceptual models - the American CQO Movement and the European MEAT VBP Framework - have been developed to support the implementation of value-based procurement in healthcare. We demonstrate how the latter of these models can be adapted and applied pragmatically to generate insights into the value of a specific medical device, technology or consumable.
We undertook an explanatory, qualitative, single-case study focused on a specific consumable - surgical gloves - that provide a critical example of a type of medical device usually procured in high volumes but at risk of commoditisation due to a widespread lack of understanding of their value. Since the global Covid-19 pandemic prevented fieldwork, structured interviews were conducted via Zoom and corroborated by a literature review.
We identified ten cost criteria and eight outcome criteria with which the value of surgical gloves can be analysed and understood. For each of these criteria we propose definitions and value impact metrics that decision-makers can use during a procurement exercise to describe, quantify and compare glove value.
The MEAT VBP Framework provides a highly practical and adaptable means of imposing both structure and rigour on a value analysis process and of qualitatively describing the potential value impact of surgical gloves for patients, professionals, providers and health systems.
The MEAT VBP Framework provides a highly practical and adaptable means of imposing both structure and rigour on a value analysis process and of qualitatively describing the potential value impact of surgical gloves for patients, professionals, providers and health systems.Five previously undescribed guanacastane diterpenoids, namely psathyrellins A-E (1-5), were obtained from cultures of the mushroom Psathyrella candolleana. Their structures with absolute configurations were elucidated by extensive spectroscopic methods. Compounds 1-3 showed antibacterial activity against four strains with MIC values in a range of 16-128 μg/mL.Piezoelectric nanogenerators (PNGs) have been studied as renewable energy sources. PNGs consisting of organic piezoelectric materials such as poly(vinylidene fluoride) (PVDF) containing oxide complex powder have attracted much attention for their stretchable and high-performance energy conversion. In this study, we prepared a PNG combined with PVDF and lanthanum-modified bismuth titanate (Bi4-XLaXTi3O12, BLT) ceramics as representative ferroelectric materials. The inserted BLT powder was treated by high-speed ball milling and its particle size reduced to the nanoscale. We also investigated the effect of particle size on the energy-harvesting performance of PNG without polling. As a result, nano-sized powder has a much larger surface area than micro-sized powder and is uniformly distributed inside the PNG. Moreover, nano-sized powder-mixed PNG generated higher power energy (> 4 times) than the PNG inserted micro-sized powder.Serpentirhabdias mamlambo n. sp. is described from the lung of the herald snake, Crotaphopeltis hotamboeia (Laurenti) in KwaZulu-Natal Province, South Africa. The new species is characterised by the small lips, the absence of the buccal capsule, the large excretory glands (1.5-2.3 times longer than the oesophagus), and the numerous eggs in uteri. Serpentirhabdias mamlambo n. sp. differs from other Serpentirhabdias spp. in the presence of M-shaped cuticular folds on dorsal and ventral sides of apical surface, the eye-shaped internal labial papillae, and the distinct dilatation of the oesophagus at its mid-length. link2 Morphological differentiation of S. mamlambo n. sp. from its congeners is supported by molecular evidence based on cox1 mitochondrial gene, and ITS and partial 28S region of nuclear rDNA. Serpentirhabdias mamlambo n. sp. is the first species of the genus Serpentirhabdias described from the Afrotropical Realm.
Dysfunction of the gastrointestinal tract (GIT) is one of the most common non-motor symptom of Parkinson's Disease (PD). Pathological processes causing PD were suggested to initiate in the enteric nervous system (ENS) and proceed to the central nervous system (CNS). There are studies showing that low-carbohydrate ketogenic diets can improve motor symptoms of PD. link3 Caprylic acid (C8) is the principal fatty acid component of the medium-chain triglycerides in the ketogenic diets. In this study, we aimed to evaluate the effects of caprylic acid, in neurotoxin exposed zebrafish focusing on the relationship between intestinal and brain oxidative stress and inflammation.
Adult zebrafish were exposed to rotenone (5μg/L) (R group) and caprylic acid (20 and 60mg/mL) (L + HDCA and R + HDCA groups) for 30days. At the end of 30days locomotor activities were determined. Levels of lipid peroxidation (LPO), nitric oxide, glutathione and superoxide dismutase and glutathione S-transferase activities were determined by spectrophotometric methods and gene expressions of tnf⍺, il1, il6, il21, ifnɣ and bdnf were evaluated by RT-PCR in the brain and intestinal tissues of zebrafish.
Caprylic acid ameliorated LPO, NO, SOD and the expressions of tnf⍺, il1, il6, il21, ifnɣ and bdnf in brain and intestines. Locomotor activities were only ameliorated in high dose R + HDCA group.
Caprylic acid ameliorated the neurotoxin-induced oxidative stress and inflammation both in the brain and intestines and enhanced locomotor activity in zebrafish.
Caprylic acid ameliorated the neurotoxin-induced oxidative stress and inflammation both in the brain and intestines and enhanced locomotor activity in zebrafish.
Exercise has traditionally been used and prescribed as an effective and suitable way to treat type 2 diabetics Mellitus (T2DM). In this regard, we compared inflammatory, antioxidant, and glycemic status to different kinds of high-intensity interval training (strength training, HIIT, and HIIT + ST) in patients with T2DM.
Fifty-nine T2DM patients (age = 45-60 yrs) were randomly divided to strength training (ST) (n = 15), high intensity interval training (HIIT) (n = 16), HIIT + ST (n = 15) or served as control (CON) (n = 13) groups. Experimental groups performed three training sessions/week for 12weeks. Inflammatory, antioxidant, glycemic factors, and anthropometric parameters were evaluated at baseline and after the 12weeks of interventions. Training HIIT groups significantly improved antioxidant factors, lipid profile, and glycemic parameters (P ≤ 0.05). Interleukin 6 (IL-6), C-reactive protein (CRP), and tumor necrosis factor-α (TNF-α) significantly decreased in the three training groups. As a result of training, the overall inflammatory and antioxidant status were improved considerably in all three training groups compared to the CON group (P ≤ 0.