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Colon
It is a long, tubular organ that connects the small intestine to the rectum.
The colon plays a crucial role in water absorption, electrolyte balance, and the formation of stool.
Diseases and conditions affecting the colon, such as colorectal cancer, inflammatory bowel disease, and diverticulitis, can have serious health consequences.
Optimizing colon health through research into effective protocols and products is essential for maintaining overall gastrointestinal wellbeing.
PubCompare.ai, an innovative AI-powered platform, can help researchers locate relevant protocols from literature, preprints, and patents, and use AI-driven comparisons to identify the best approaches for their needs, ensuring reproducibility and accruacy in their work.
Most cited protocols related to «Colon»
Most recents protocols related to «Colon»
Example 6
The organ bath system represents an ex vivo system lacking central nervous system (CNS) connections. Gastrointestinal motility is investigated using mice as an animal model. Experiments are performed to measure colonic contractility in conscious germ free (GF) and colonized mice with infusion of tryptamine by enema as well as following colonization of GF with tryptamine producing E. coli. The effect of tryptamine on epithelial biology also is determined.
Example 11
The purpose of this non-Good Laboratory Practice (GLP) study is to explore the PK/PD and bioavailability of adalimumab when applied to DSS-induced colitis in Yorkshire-cross farm swine. All animals are randomized into groups of three. Animals are dosed once with adalimumab via subcutaneous (SC), perirectal (PR), or intracecal (IC) administration.
The concentration of adalimumab and TNFα is measured in plasma at 1, 2, 3, 4, 6, and 12 hours post-dose. The concentration of adalimumab is measured in rectal contents at 1, 3, 6, and 12 hours post-dose and in luminal content at 12 hours post-dose. Concentration of adalimumab and TNFα, HER2, and total protein is measured in gastrointestinal tissue, e.g., cecum sample (CAC), proximal colon sample (PCN), transverse colon sample (TCN), distal colon sample (DCNi) inflamed, distal colon non-inflamed sample (DCNn), and rectum sample (RTM), at 12 hours post-dose.
Example 7
Five groups including tucaresol, tucaresol plus PD-1 or PD-L1 antibody, tucaresol plus CTLA-4 antibody, CTLA-4 antibody plus PD-1 or PD-L1 antibody, and tucaresol plus plinabulin are tested to determine their effect in an animal xenograft model.
The combined treatment with tucaresol and the checkpoint inhibitor(s) is tested in comparison with the treatment with tucaresol alone, the treatment with checkpoint inhibitor alone, or combination of checkpoint inhibitors. The tests are performed using seven to ten-week old athymic (nu/nu) mice that were injected subcutaneously with human tumor cell lines (of either solid or liquid tumor origin, for example of breast, lung, colon, brain, liver, leukemia, myeloma, lymphoma, sarcoma, pancreatic or renal origin). Six to ten testing groups are prepared, and each group includes 10 mice.
Each treatment starts at tumor size between 40-150 mm3 and continues until Day 24-56, when the animals are necropsied. To determine the efficacy of each treatment, the following data are collected: mortality; the body weight of the mice assessed twice weekly both prior to treatments; the rate of tumor growth as determined by the tumor size measurement (twice every week); the tumor growth index; overall survival rate; the tumor weight at necropsy; and the time required to increase tumor size 10 fold.
Example 3
Preparations of full-thickness colonic segments (˜1.5 cm) were allowed to equilibrate in 37° C. Kreb's-jacketed organ baths with their distal ends opening to a pressure transducer and maintained under basal pressure of 5-cm column of vehicle (RL). The proximal end was closed during pressure recordings but opened to allow luminal infusion of vehicle or tryptamine in solution (100 μM, 1 mM and 3 mM; 10 minutes per treatment; n=5-7 mice).
Contractile frequency was not significantly different comparing tryptamine treatments with vehicle controls; however, there was a trend toward increased frequency in segments treated with luminal 1 mM tryptamine compared to controls (5.9±0.8 vs 4.1±0.6; P=0.15). Mean contractile amplitude and contractile magnitude, as measured by area under the curve, were also not significantly different between control (vehicle alone) and any of the tryptamine concentrations examined. Contractile duration, measured at half amplitude, was not significantly different between vehicle controls and any of the luminal tryptamine treatments.
Example 5
The response to 5-hydroxytryptophan (5HT; 0.003-300 μM) on the mucosal or serosal side and tryptamine (0.003-3000 μM) on the mucosal or serosal side was determined in segments of proximal colon, stripped of external muscle layers, from both 5HTR4 KO and WT mice.
Colon segments from 5HTR4 KO mice displayed decreased responsiveness to serosal serotonin and no response to mucosal serotonin when compared with colon segments from WT mice. Cumulative concentration response curves induced by serosal tryptamine were significantly different between 5HTR WT (Emax: 110±17 μA/cm2; n=6-7) and KO mice (no response). While Δlsc did not reach maximum response following mucosal application of 3000 μM tryptamine, responses were seen in 5HTR4 WT mice (99.5±30.7 n=5) while no response was elicited in 5HTR4 KO (
These results show that tryptamine acts as a 5HTR4 mimetic with effects on gut epithelial function independent of serotonin.
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More about "Colon"
This long, tubular organ plays a crucial role in the final stages of waste elimination, water absorption, electrolyte balance, and stool formation.
Maintaining optimal colon health is essential for overall gastrointestinal wellbeing.
Conditions affecting the colon, such as colorectal cancer, inflammatory bowel diseases (e.g., ulcerative colitis, Crohn's disease), and diverticulitis, can have serious health consequences.
Researchers studying colon health and related disorders often utilize various tools and techniques, including cell lines like HCT116 and SW480 (colorectal cancer cell lines), DMEM and RPMI 1640 media for cell culture, and reagents like TRIzol and RNeasy Mini Kit for RNA extraction and analysis.
The SW620 cell line, derived from a metastatic colorectal tumor, is also commonly used in colon cancer research.
Animal models, such as the dextran sulfate sodium (DSS)-induced colitis model, are often employed to study the pathogenesis and potential treatments for inflammatory bowel diseases.
These research efforts aim to develop effective protocols and products to optimize colon health and address various gastrointestinal conditions.
PubCompare.ai, an innovative AI-powered platform, can assist researchers in locating relevant protocols from literature, preprints, and patents, and leverage AI-driven comparisons to identify the most suitable approaches for their research needs.
This tool helps ensure reproducibility and accruacy in colon health-related studies, ultimately contributing to the advancement of knowledge and the improvement of patient outcomes.