Evaluating the prophylactic potential of zafirlukast against the toxic effects of acetic acid on the rat colon

Background: Numerous therapeutic agents are in clinical practice for the treatment of inflammatory and painful conditions, but their applications has been challenged by various side /toxic effects. Therefore, new effective and safe therapies are most warrant, for which medicinal plant could be a significant alternative. Berberis baluchistanica has traditionally been used as analgesic and antiinflammatory without any scientific background. Objective: The current study was designed to evaluate the analgesic and antiinflammatory like effects of extract B. baluchistanica in animal models. Methods: For the study of antinociceptive effect, an of extract of B. baluchistanica (100, 200 and 300 mg/kg i.p.), were tested in acetic acid induced writhing and formalin tests. while for the antiinflammatory action, carrageenan induced paw edema, cotton pellet induced granuloma and xylene induced ear edema tests were used. Results: The results showed significant dose dependent antinociceptive effect of extract of B. baluchistanica in acetic acid induced writhing and formalin induced flinching behavior tests. However, the effect was strongly antagonized by the injection of naloxone, suggesting the expression via opioidergic receptors. Similarly, strong antiinflammatory action was illustrated in carrageenan induced paw edema, cotton pellet induced granuloma and xylene induced ear edema tests and thus provided evidence for the versatile phytochemical nature of its phytochemical. Background: Numerous therapeutic agents are in clinical practice for the treatment of inflammatory and painful conditions, but their applications has been challenged by various side /toxic effects. Therefore, new effective and safe therapies are most warrant, for which medicinal plant could be a significant alternative. Berberis baluchistanica has traditionally been used as analgesic and antiinflammatory without any scientific background.

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Dapsone reduced acetic acid-induced inflammatory response in rat colon tissue through inhibition of NF-kB signaling pathway

Immunopharmacology and Immunotoxicology ◽

10.1080/08923973.2019.1678635 ◽

2019 ◽

Vol 41 (6) ◽

pp. 607-613 ◽

Cited By ~ 1

Author(s):

Amir Rashidian ◽

Asma Rashki ◽

Alireza Abdollahi ◽

Nazgol-Sadat Haddadi ◽

Mohsen Chamanara ◽

...

Keyword(s):

Acetic Acid ◽

Inflammatory Response ◽

Signaling Pathway ◽

Rat Colon ◽

Colon Tissue

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Role of capsaicin-sensitive afferent nerves in mucosal injury and injury-induced hyperemia in rat colon

AJP Gastrointestinal and Liver Physiology ◽

10.1152/ajpgi.1992.262.2.g332 ◽

1992 ◽

Vol 262 (2) ◽

pp. G332-G337 ◽

Cited By ~ 1

Author(s):

F. W. Leung

Keyword(s):

Acetic Acid ◽

Colonic Mucosa ◽

Mucosal Injury ◽

Mucosal Damage ◽

Rat Colon ◽

Mucosal Protection ◽

Reflectance Spectrophotometry ◽

Afferent Nerves ◽

Measuring Probe

Exposure of the colonic mucosa to 10% acetic acid results in ischemia and damage of the exposed mucosa and hyperemia in the adjacent unexposed and undamaged mucosa. We hypothesize that this hyperemia is mediated in part by capsaicin-sensitive afferent nerves, and absence of the hyperemia is associated with aggravation of damage in the exposed mucosa. In urethan-anesthetized rats, with the reflectance spectrophotometry probe in contact with the colonic mucosa, index of mucosal oxygen saturation (ISO2) was monitored before and for 5 min after 10% acetic acid was applied to the mucosa surrounding the measuring probe. Histological examination confirmed that the mucosa in contact with the measuring probe was undamaged, but the mucosa exposed to the 10% acetic acid was damaged. In the mucosa in contact with the reflectance spectrophotometry probe, a significant increase in ISO2 was observed in vehicle-pretreated rats, whereas a partial but significant reduction of such hyperemia was observed in capsaicin-pretreated rats. In the mucosa exposed to the 10% acetic acid, the depth of the mucosal lesion, but not the drop in ISO2, was significantly greater in the capsaicin-pretreated rats. The findings are consistent with the hypothesis that the colonic mucosal hyperemia in the undamaged mucosa adjacent to the mucosa damaged by the 10% acetic acid is mediated partially by capsaicin-sensitive afferent nerves. Attenuation of such hyperemia by capsaicin-pretreatment is associated with deeper mucosal damage, suggesting that the capsaicin-sensitive afferent nerves also contribute toward colonic mucosal protection against 10% acetic acid-induced injury in the exposed mucosa.

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Feeding trials with ammoniated molasses in the diet of young dairy cattle

The Journal of Agricultural Science ◽

10.1017/s0021859600029877 ◽

1958 ◽

Vol 50 (1) ◽

pp. 60-63 ◽

Cited By ~ 13

Author(s):

S. Bartlett ◽

W. H. Broster

Keyword(s):

Acetic Acid ◽

Phosphoric Acid ◽

Dairy Cattle ◽

Food Consumption ◽

Guinea Pigs ◽

Live Weight ◽

Toxic Effects ◽

Poor Growth ◽

The Poor ◽

Feeding Trials

1. Ammoniated invert molasses when used as a food for yearling dairy cattle proved toxic in doses of 1 lb. per day.2. When ammoniated invert molasses had been acidified with phosphoric acid the toxicity was markedly reduced but not entirely eliminated. Ammoniated molasses acidified with acetic acid produced no toxic effects but the live-weight responses of yearling cattle was inferior to a ration markedly deficient in protein. The poor responses may have been partially due to the unpalatability of the ammoniated molasses.3. The ammoniated molasses used in experiment 1 did not produce toxic symptoms in rats but it did result in reduced food consumption and poor growth.4. The ammoniated molasses treated with acetic acid, when included at the rate of 10% of the diet of guinea-pigs, depressed appetite and caused toxic effects.

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Effects of N-acetylcysteine Treatment on Oxidative Stress in Acetic Acid-induced Experimental Colitis in Rats

Journal of International Medical Research ◽

10.1177/147323000503300207 ◽

2005 ◽

Vol 33 (2) ◽

pp. 196-206 ◽

Cited By ~ 35

Author(s):

E Akgun ◽

C Çaliskan ◽

HA Celik ◽

AO Ozutemiz ◽

M Tuncyurek ◽

...

Keyword(s):

Nitric Oxide ◽

Acetic Acid ◽

Experimental Colitis ◽

Rat Colon ◽

Protective Effects ◽

Colonic Injury ◽

Toxic Damage ◽

Standard Assay ◽

Inflammatory Bowel ◽

Acid Administration

We assessed the possible protective effects of N-acetylcysteine (NAC) against toxic damage in the rat colon. Two doses of NAC (20 mg/kg and 100 mg/kg) given for 2 days and 7 days after acetic acid administration (to induce colitis) were tested. NAC was dissolved in saline and administered locally (intracolonic), systemically (intraperitoneal) or in a combination (intracolonic and intraperitoneal). Several parameters, including macroscopic and histopathological scores and myeloperoxidase, glutathione and nitric oxide concentrations were measured using standard assay procedures. Treatment with 100 mg/kg NAC for 7 days significantly decreased tissue myeloperoxidase, glutathione and nitric oxide concentrations. The 20 mg/kg dose had no protective effects. The data indicate that NAC substantially reduced the degree of colonic injury, probably by regulating free radical production and inhibiting inflammation. It may, therefore, have a role in the treatment of inflammatory bowel disease.

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Bacterial-Mucosal Cell Junctional Complexes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100050731 ◽

1974 ◽

Vol 32 ◽

pp. 144-145

Author(s):

Roger C. Wagner

Keyword(s):

Intestinal Wall ◽

Rat Colon ◽

Mucosal Cell ◽

Gram Negative Bacteria ◽

Gram Negative ◽

Mucosal Cells ◽

Mucosal Lining ◽

Degenerative Alterations ◽

Junctional Complexes ◽

Intestinal Mucosal Cells

Bacteria exhibit the ability to adhere to the apical surfaces of intestinal mucosal cells. These attachments either precede invasion of the intestinal wall by the bacteria with accompanying inflammation and degeneration of the mucosa or represent permanent anchoring sites where the bacteria never totally penetrate the mucosal cells.Endemic gram negative bacteria were found attached to the surface of mucosal cells lining the walls of crypts in the rat colon. The bacteria did not intrude deeper than 0.5 urn into the mucosal cells and no degenerative alterations were detectable in the mucosal lining.

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Ultrastructure of the effect of T-514 obtained from Karwinskia humboldtiana on assembly and integrity of yeast's peroxisomes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100084983 ◽

1991 ◽

Vol 49 ◽

pp. 136-137

Author(s):

J. Sepulveda-Saavedra ◽

I. Vander-Klei ◽

M. Venhuis ◽

Y. Piñeyro-Lopez

Keyword(s):

Culture Conditions ◽

Toxic Effects ◽

Candida Boidinii ◽

Central Mexico ◽

Poisonous Plant ◽

Biological Behaviour ◽

Enzyme Content ◽

Fat Deposits ◽

Yeast Model

Karwinskia humboldtiana is a poisonous plant that grows in semi desertic areas in north and central México. It produces several substances with different toxic effects. One of them designated T-514 damages severely the lung, kidney and liver, producing in the hepatoeyte large intracellular fat deposits and necrosis. Preliminary observations demonstrated that three is a decrease in the amount of peroxisomes in the hepatocytes of experimentally intoxicated rats and monkeys. To study the effect exerted by the T-514 on peroxisomes, a yeast model was selected, thus, three species: Saccha romices cerevisiae, Ilansenula polymorpha and Candida boidinii were used, because there is information concerning their peroxisome's morphology, enzyme content, biological behaviour under different culture conditions and biogenesis.

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Ectodesmata as Revealed By Freeze-Etch Preparations of Plant Epidermal Cell Walls

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100072782 ◽

1973 ◽

Vol 31 ◽

pp. 468-469

Author(s):

N.C. Lyon ◽

W. C. Mueller

Keyword(s):

Electron Microscopy ◽

Acetic Acid ◽

Nitric Acid ◽

Oxalic Acid ◽

Light Microscopy ◽

Epidermal Cell ◽

Cell Walls ◽

Plant Viruses ◽

Plant Leaves ◽

Thin Sections

Schumacher and Halbsguth first demonstrated ectodesmata as pores or channels in the epidermal cell walls in haustoria of Cuscuta odorata L. by light microscopy in tissues fixed in a sublimate fixative (30% ethyl alcohol, 30 ml:glacial acetic acid, 10 ml: 65% nitric acid, 1 ml: 40% formaldehyde, 5 ml: oxalic acid, 2 g: mecuric chloride to saturation 2-3 g). Other workers have published electron micrographs of structures transversing the outer epidermal cell in thin sections of plant leaves that have been interpreted as ectodesmata. Such structures are evident following treatment with Hg++ or Ag+ salts and are only rarely observed by electron microscopy. If ectodesmata exist without such treatment, and are not artefacts, they would afford natural pathways of entry for applied foliar solutions and plant viruses.

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Some Conditions Necessary for Pinocytosis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100100457 ◽

1968 ◽

Vol 26 ◽

pp. 142-143

Author(s):

M. W. Brightman

Keyword(s):

Smooth Muscle ◽

Cell Membrane ◽

Toxic Effects ◽

Cytological Evidence ◽

Cell Processes

The cytological evidence for pinocytosis is the focal infolding of the cell membrane to form surface pits that eventually pinch off and move into the cytoplasm. This activity, which can be inhibited by oxidative and glycolytic poisons, is performed only by cell processes that are at least 300A wide. However, the interpretation of such toxic effects becomes equivocal if the membrane invaginations do not normally lead to the formation of migratory vesicles, as in some endothelia and in smooth muscle. The present study is an attempt to set forth some conditions under which pinocytosis, as distinct from the mere inclusion of material in surface invaginations, can take place.

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