scholarly journals The gastroprotective effect of the essential oil of Croton cajucara is different in normal rats than in malnourished rats

2006 ◽  
Vol 96 (2) ◽  
pp. 310-315 ◽  
Author(s):  
A. C. B. Paula ◽  
W. Toma ◽  
J. S. Gracioso ◽  
C. A. Hiruma-Lima ◽  
E. M. Carneiro ◽  
...  

It has been shown previously that malnourished rats are resistant to acute gastric lesions but not to subchronic gastric ulceration. It also has been demonstrated that the essential oil obtained from the bark of Croton cajucara (Sacaca) has antiulcer properties. In the present study, the ability of this essential oil to prevent the formation of gastric ulcers in rats fed a diet with 17% protein (normoproteic rats) or 6% protein (malnourished rats) was investigated. At a dose of 100mg/kg body weight, orally, the essential oil significantly reduced the gastric injury caused by indomethacin (25% after 2h and 70% after 4h) only in normoproteic rats. In the pylorus ligature model, the essential oil increased the pH and gastric volume, but decreased the total acid concentration in both groups when compared to the respective control group. The essential oil significantly increased prostaglandin E2 production in glandular cells by 50% compared to the controls in both groups of rats. In addition, the amount of gastric mucus was two-fold higher in malnourished rats than in normoproteic rats. The present results show that the enhanced protective effect of essential oil in malnourished rats involved an increase in prostaglandin E2 production and mucus secretion, which are both factors that protect the gastric mucosa against damage. In agreement with this, malnourished rats always had a lower number of acute gastric ulcers.

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
C. M. Polo ◽  
T. M. Moraes ◽  
C. H. Pellizzon ◽  
M. O. Marques ◽  
L. R. M. Rocha ◽  
...  

The elderly population has experienced increased life expectancy as well as the increased incidence of gastric ulcers. The peels of fruits fromCitrus aurantiumL., popularly known in Brazil as orange bitter, are commonly used asatea form for the treatment of gastrointestinal tract disorders, such as ulcer and gastritis. We evaluated the healing effects of essential oil from the peels ofCitrus aurantiumfruits (OEC) on gastric ulcers in middle-aged rats. We examined the effects of a 14-day chronic OEC treatment on gastric mucosa in middle-aged male Wistar rats that were given acetic-acid-induced gastric lesions by morphometric and immunohistological analyses. Oral OEC treatment significantly reduced the lesion area (76%) within the gastric mucosa and significantly increased (P<.05) the height of regenerated mucosa (59%) when compared to the negative control group. Immunohistochemical analysis of the molecular markers such as COX-2, HSP-70, VEGF, and PCNA in the gastric mucosa confirmed that OEC treatment induced healing effects by increasing the number of new blood vessels and by augmenting gastric mucus in the mucosa glands. These results suggest that the oil fromCitrus aurantiumeffectively heals gastric ulcers in middle-aged animals; however, safe use of OEC demands special care and precautions.


1996 ◽  
Vol 51 (7-8) ◽  
pp. 563-569 ◽  
Author(s):  
M. Reyes ◽  
C. Martín ◽  
C. Alarcón de la Lastra ◽  
J. Trujillo ◽  
M. V. Toro ◽  
...  

Abstract Investigations were carried out to determine the antiulcerogenicity of the flavonoid fraction (ethyl acetate extract) of Erica andevalensis Cabezudo-Rivera on gastric ulceration induced by different experimental models. Oral treatment with the ethyl acetate extract and the major flavonoid (myricetin 3-O-ᴅ-galactoside) were found to be effective to prevent gastric ulceration induced by cold-restraint stress in rats . Statistically significant ulcer index values with respect to the control group were observed. Mucus content was not increased although it was accompanied by an increase in proteins and hexosamines. In pyloric-ligated animals flavonoids showed a significant reduction in the number and severity of the ulcers. Under the same conditions acidity did not decrease with the flavonic extract and myricetin 3-O-ᴅ-galactoside significantly as compared to control. Gastric ulcers induced by oral administration of absolute ethanol were reduced by pretreatment with the flavonoid extract of doses from 125 to 250 mg/kg and the isolated flavonoid of 25 mg/kg p.o. However neither the flavonic extract nor the isolated flavonoid induced changes in the amount and glycoprotein content of gastric mucus.


2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Ji Hwan Lee ◽  
Do Hwi Park ◽  
Sanghyun Lee ◽  
Hye Jin Seo ◽  
Shin Jung Park ◽  
...  

AbstractThe prevalence of gastritis in South Korea is rapidly increasing owing to the prevalence of Helicobacter pylori infection and fast eating habit. The usual treatment for acute gastritis following a long intake of non-steroidal anti-inflammatory drugs (NSAIDs) or alcohol is to stop the causal factors. Metronidazole and lansoprazole are recommended for the treatment of H. pylori infection gastritis. Omeprazole a proton pump inhibitor, is used to decrease gastric acid production. However, owing to the side effects and refractoriness of the drug, a safe and efficient treatment is required. Plant-derived phytochemicals have emerged as novel agents against chronic disorders. In this study, firstly, to explore the potential of pharmacological activities, including efficacy and mechanisms of Cinnamomum cassia against gastritis, a literature review was performed based on 20 studies out of a total of 749 records obtained using a search strategy. From the literature review, the therapeutic targets of C. cassia extract and cinnamaldehyde, a compound of C. cassia, were found to be related with NFκB activity, and their signaling pathway were verified by experiments. C. cassia extract plays a role in protection of gastric ulcers induced in four ways (immersion stress-induced, ethanol-induced, hydrochloric acid-induced, or NSAIDs-induced ulcer). None of the clinical studies on C. cassia extracts or compounds met our criteria. When the standardized extract of C. cassia (ECC) was orally administered repeatedly to Beagle Dog for 4 weeks, no toxicologically harmful changes were observed. Therefore, under the test condition, the no observed adverse effect level (NOAEL) of ECC was judged to be 1000 mg/kg/day for both sexes, and no toxic target organ was observed. Administration of ECC in the Sprague–Dawley rat model of acute gastric injury caused by indomethacin administration significantly increased gastric mucus volume. Administration of ECC in the acute gastric injury model caused by indomethacin administration is considered effective in improving gastric injury. However, research and efforts to develop a reliable ‘standardization of natural drugs’ by establishing the best quality evaluation system are limited. Despite the pharmacological potential of ECC, further well-designed experimental studies such as in vitro, in vivo, and clinical trials are required to validate these findings and the underlying mechanisms of ECC.


Author(s):  
Ayhan Tanyeli ◽  
Ersen Eraslan ◽  
Elif Polat ◽  
Tuğba Bal

AbstractBackground:Alcohol consumption has been found to be associated with gastric ulcers, including gastric mucosal lesions. Salusin-α and salusin-β are bioactive peptides having 28 and 20 amino acids, respectively. Salusin-α and salusin-β immunoreactivity has been detected in the stomach and in the intestines. It has been reported that the salusins regulate the cytokine levels and decrease the infarct area in the heart tissue after ischemia. In this study, we investigated the effects of the salusins in the gastric injury formed with ethanol.Methods:Thirty-two sprague Dawley male rats were randomly divided into four groups, including eight rats in each group as follows: Group 1: control; Group 2: ethanol 5 mL/kg; Group 3: ethanol 5 mL/kg+5 nmol/kg salusin-α; Group 4: ethanol 5 mL/kg+5 nmol/kg salusin-β.Results:The salusin-α level increased at a significant level in the ulcer group formed with ethanol (p<0.001); the change in the salusin-β level is not significant. As for malondialdehyde (p<0.05) and myeloperoxidase (p<0.001), when compared with the control group, tumor necrosis factor-α (p<0.05) levels increased in the group to which ethanol was applied and decreased significantly with the application of salusins. Levels of GSH and IL-1β did not change at a significant level. In addition, histopathologic analysis demonstrated that, in salusin-administered groups, mucosal injury and caspase-3 expressions were reduced.Conclusions:The suppression of salusin-α and salusin-β on caspase-3 expression by means of their effects on oxidative injury and TNF-α levels shows that these two hormones could serve as anti-ulcerative agents.


2020 ◽  
Vol 16 (8) ◽  
pp. 1191-1196
Author(s):  
Pritt Verma ◽  
Shravan K. Paswan ◽  
Vishal K. Vishwakarma ◽  
Priyanshi Saxena ◽  
Chandana V. Rao ◽  
...  

Background: To evaluate the antiulcer activity of ethanolic leaves extract of Saraca indica against ethanol, pylorus ligature and indomethacin in albino rats. Materials and Methods: Ulcer was produced by ethanol, pylorus ligature and indomethacin in albino rats. Five groups (n=6) of rats were orally pre-treated with carboxymethyl cellulose solution, and ranitidine (80 mg/kg) respectively. In ethanol induced ulcer, the animals were treated with 200 and 400 mg/kg b.w. ethanolic leave extracts of Saraca indica in 0.3% CMC solution, 60 minutes before oral administration of absolute ethanol to produce gastric mucosal injury. In indomethacin induced ulcer, the drug was administered orally at the dose of 30 mg/kg b.w. After 7-9 hours of administration of indomethacin (30 mg/kg); the animals were sacrificed with high doses of anesthesia. In the pylorus ligature method, volume of free acidity, gastric secretion, pH and total acidity were estimated. In all three models, the ulcer index and % protection were estimated. Results: The anti ulcer activity of ethanolic leave extracts of Saraca indica in ethanol, indomethacin and pylorus ligature models is evident from the significant (P<0.001) reduction in ulcer index. In pylorus ligature model, significant (P<0.001) reduction in total acidity gastric volume and increase in pH were observed when compared with the standard drug. Conclusion: Ethanolic leave extracts of Saraca indica were found to be significantly protective against ethanol, indomethacin and pylorus ligature induced gastric ulcers in the experimental albino rats. The result obtained suggest that ethanolic leave extracts of Saraca indica possesses significant anti-ulcer activity.


Cells ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 982
Author(s):  
Xiaoyan Peng ◽  
Rongguang Zhang ◽  
Chen Wang ◽  
Feiyan Yu ◽  
Mingyang Yu ◽  
...  

Current studies indicate that the anti-H. pylori protective efficacy of oral vaccines to a large extent depends on using mucosal adjuvants like E. coli heat-lable enterotoxin B unit (LtB). However, the mechanism by which Th17/Th1-driven cellular immunity kills H. pylori and the role of LtB remains unclear. Here, two L. lactis strains, expressing H. pylori NapA and LtB, respectively, were orally administrated to mice. As observed, the administration of LtB significantly enhanced the fecal SIgA level and decreased gastric H. pylori colonization, but also markedly aggravated gastric inflammatory injury. Both NapA group and NapA+LtB group had elevated splenocyte production of IL-8, IL-10, IL-12, IL-17, IL-23 and INF-γ. Notably, gastric leukocytes’ migration or leakage into the mucus was observed more frequently in NapA+LtB group than in NapA group. This report is the first that discusses how LtB enhances vaccine-induced anti-H. pylori efficacy by aggravating gastric injury and leukocytes’ movement into the mucus layer. Significantly, it brings up a novel explanation for the mechanism underlying mucosal cellular immunity destroying the non-invasive pathogens. More importantly, the findings suggest the necessity to further evaluate LtB’s potential hazards to humans before extending its applications. Thus, this report can provide considerable impact on the fields of mucosal immunology and vaccinology.


Author(s):  
Seyedmohammad Mirhosseini ◽  
Ali Abbasi ◽  
Nastaran Norouzi ◽  
Fatemeh Mobaraki ◽  
Mohammad Hasan Basirinezhad ◽  
...  

Abstract Objectives Many women in recent years have been willing to undergo puncture surgery for childbirth, which, like other surgeries, has physical and psychological side effects such as incision, infertility, chronic pain, and anxiety. Therefore, it is important to reduce and improve these side effects. The aim of this study was to determine the effect of foot massage with orange essential oil on pain and anxiety in women undergoing cesarean section. Methods This randomized clinical trial study was conducted in 2019 on 80 women referred to Bahar Shahroud Hospital after cesarean section surgery. The samples were divided into two groups by intervention (foot massage with orange essential oil) and control (foot massage without orange essential oil). The Spielberger scale was used to determine anxiety scores after cesarean section. In the intervention group, the feet were massaged with orange essential oil, and in the control group, the orange essential oil massage was performed without oil. Anxiety before, immediately after, and 60 min after the intervention was measured and evaluated in both groups. Data analysis was performed using descriptive and inferential statistics. Significant levels were considered for all statistical tests (p<0.05). Results The anxiety score before the intervention in the two groups of intervention and control was 57.12 ± 3.12 and 57.07 ± 3.54, respectively, which were not significantly different, but immediately after the intervention, the anxiety scores in both groups decreased significantly so that there was a further decrease in the intervention group (52.10 ± 4.75 and 56.02 ± 3.77), 1 h after the intervention, the anxiety score in the intervention group decreased compared to the previous stage and increased in the control group (50.40 ± 3.74 and 56.85 ± 4.27). Conclusions Foot massage with orange essential oil can probably be effective as a proper nursing intervention in reducing anxiety after cesarean section surgery.


2018 ◽  
Vol 38 (5) ◽  
pp. 499-509 ◽  
Author(s):  
H Bouzenna ◽  
N Samout ◽  
S Dhibi ◽  
S Mbarki ◽  
S Akermi ◽  
...  

The present study is planned to examine the antioxidant activity (AA) and the protective effect of the essential oil of Citrus limon (EOC) against aspirin-induced histopathological changes in the brain, lung, and intestine of female rats. For this purpose, 28 albino rats were classified to control group (group C), aspirin group (group A), EOC group (group EOC), and pretreatment with EOC and treated with aspirin group (group EOC + A). The antioxidant activities of EOC were evaluated by three different assays including reducing power, β-carotene, and scavenging of hydrogen peroxide (H2O2). Our results found that EOC represents, respectively (0.064 ± 0.013 and 0.027 ± 00 mg Quer E/100 µL), of flavonoid and flavonol. Then, it exhibited a potential activity of reducing power (at 300 mg/mL, which was found to be 0.82 ± 0.07), β-carotene-linoleic acid (AA% = 69.28 ± 3.5%), and scavenging of H2O2 (IC50 = 0.23 ± 0.008 mg/mL). In vivo, aspirin given to rats at the dose of 600 mg/kg body weight induced histomorphological damage in brain, lung, and intestine. However, our data found that the pretreatment with EOC offered a significant protection against the injury induced by aspirin. It can be concluded that the protective effect of EOC can be due to its antioxidant activities.


2010 ◽  
Vol 14 (1) ◽  
pp. 15 ◽  
Author(s):  
G. QUADRI ◽  
N. NATALE ◽  
C. SPREAFICO ◽  
C. BELLONI ◽  
D. BARISANI ◽  
...  

Intravesical prostaglandin E2 is effective in the recovery of spontaneous voiding after transvaginal reconstruction of the pubocervical fascia and short arm sling according to Lahodny. The aim of the study was to compare the effects of intravesical prostaglandin E2 in the prevention of urinary retention after transvaginal reconstruction of the pubocervical fascia and short arm sling according to Lahodny. STUDY DESIGN: From November 1996 to June 1999 fifty women underwent the Lahodny procedure for moderate/severe cystocele and stress urinary incontinence. Women were randomly assigned to 1 of the 2 study groups: intravesical prostaglandin E2 versus controls. Data obtained were analyzed with the Student t test and the Fisher exact test. RESULTS: Two patients of the treatment group had to be excluded from the study, one because of the wrong measurement of the post-voidal residual volume and another due to a fastidious burning sensation which appeared immediately after prostaglandin instillation and required the suspension of the treatment. No other side effects such as nausea, vomiting, diarrhea or hyperthermia were observed. Patients who underwent the prostaglandin E2 treatment showed a recovery of spontaneous voiding after 7.9&plusmn;6.7 days, whereas this interval was significantly longer in the control group, being 12.9&plusmn;9.7 days (p=0.04, Two tailed Unpaired Student's T test). CONCLUSION: The effectiveness and the low associated morbidity mark the treatment with intravesical prostaglandin E2 useful in the recovery of normal voiding after transvaginal pubocervical fascia reconstruction and short arm sling with the procedure according to Lahodny.


Author(s):  
Ali Mohammadpour ◽  
Mousa Sajadi ◽  
Somayyeh Maghami ◽  
Hossein Soltani

Objective: Increased gastric residual volume is a complication of enteral nutrition intolerance that leads to gastrointestinal complications such as nausea, vomiting, and aspiration pneumonia. The present study was conducted to determine the effect of gastric gas emptying on the residual gastric volume in mechanically-ventilated patients fed through nasogastric tubes.Methods: This randomized, single-blind, clinical trial was conducted on two groups of patients in the intensive care unit (ICU) of Kamyab Hospital of Mashhad. A total of 64 patients were randomly divided into a case and a control group. In the case group, the gastric gases accumulated through the nasogastric tube were emptied by applying palm pressure on the epigastric region. The control group did not undergo this intervention but received the routine care provided in the ward. Data were collected using a demographic questionnaire and a form containing records of the patients’ residual gastric volume and disease-related information. The residual gastric volume was measured and compared in the two groups before and after the intervention. Data were analyzed in SPSS-19 using the Chi-square test, the independent t-test, and the repeated measures ANOVA at the significance level of 5%.Results: The residual gastric volume did not differ significantly between the two groups before the intervention (p=0.14); after the intervention; however, a significant reduction was observed in the case group compared to the controls (p=0.007).Conclusion: Gastric gas emptying helps reduce the residual gastric volume in mechanically-ventilated patients fed through nasogastric tubes. Further studies are recommended to further ensure the benefits of this method.


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