Corrosion of orthodontic brackets in different spices:In vitro study.

Context: Moist environment in the mouth varies and causes variable amounts of corrosion of dental materials. This is of concern particularly when metallic implants, metallic fillings, orthodontic appliances are placed in the hostile electrolytic environment in the human mouth. Components of diet rich in salt and spices are important factors influencing the corrosion of metallic appliances placed in the oral cavity. Aims: To study in vitro corrosion of orthodontic metallic brackets immersed in solutions of salt and spices in artificial saliva. Materials and Methods: Orthodontic brackets were used for corrosion studies in artificial saliva, salt, and spices using electrochemical technique and surface analysis. Electrochemical studies using different parameters were done in solutions of artificial saliva containing salt and spices. Photomicrographs from the optical microscope were also obtained. Results: Results of corrosion studies have clearly demonstrated that certain spices such as turmeric and coriander are effective in reducing corrosion, whereas salt and red chili have been found to enhance it. Surface analysis of small pits present on the surface of the as-received bracket will initiate corrosion which leads to more pitting.

Potential Health Benefits of Indian Spices in the Symptoms of the Metabolic Syndrome: A Review.

Spices used in Indian cooking have a long history of use as medicines to prevent and treat diseases. Many studies have confirmed that spices can be useful medicines, but the major challenge is now to provide scientific evidence and plausible mechanisms for their therapeutic responses. This review focuses on the therapeutic potential of Indian spices to treat multiple symptoms of the metabolic syndrome such as insulin resistance, diabetes, obesity, altered lipid profile and hypertension. The metabolic syndrome is prevalent and has become an important financial burden to the healthcare system in both developed and developing countries. Inflammation and oxidative stress have been proposed as initiators of the metabolic syndrome, especially of insulin resistance. Natural products with anti-inflammatory and anti-oxidant properties are found in spices. Adequate doses of these compounds may be effective in treating the metabolic syndrome. Testing these potential treatments requires adequate animal models, usually rodents, so the limitations of these models are important. Furthermore, this review highlights the need for adequate legislation and regulation to ensure the safety and success of evidence-based functional foods and nutraceuticals.

Effect of cold pressor test and a high-chilli diet on rectosigmoid motility in irritable bowel syndrome.

AIM: Visceral hypersensitivity characterizes the irritable bowel syndrome (IBS). We evaluated the effect of a cold pressor test (CPT)--hand immersion in ice water for 1 minute, which evokes a sympathetic response--on rectosigmoid motility in patients with IBS and normal volunteers. Since many Indian patients with IBS complain of worsening of symptoms following a spicy meal, we also evaluated whether a high-chilli diet affects symptoms or changes rectosigmoid motility. METHODS: Fifteen men with IBS and 13 normal volunteers (all men) were studied. Baseline rectosigmoid manometry was done for 2 h, i.e., 1 h pre- and 1 h post-CPT. The subjects were then kept in hospital on a regular diet (approximately 5 g chilli daily) for 3 days, following which symptoms were reassessed and manometry repeated for 1 h. This was followed by a high-chilli diet (approximately 15 g/day) for 3 days, after which symptoms were reassessed and manometry repeated for 1 h. RESULTS: There was no difference in the baseline study in the pre-CPT period between patients and control subjects. CPT did not change rectosigmoid motility in either group. IBS patients had varied effect on symptoms but no change in rectosigmoid motility after the high-chilli diet. In the normal volunteers, there was increased activity in the low rectum after the high-chilli diet. CONCLUSIONS: Cold pressor test does not affect rectosigmoid motility in patients with IBS or normal subjects. A high-chilli diet has varied effect on symptoms in patients with IBS and does not affect rectosigmoid motility.

Haemodynamic effects of pan masala in healthy volunteers.

OBJECTIVES: We studied acute haemodynamic effects of pan masala (powdered mixture of areca nut, slaked lime, catechu, and condiments) in healthy volunteers. METHODS: Fifty one males (mean age 28.6 +/- 10 years) were evaluated. One pouch (4 g) of pan masala without tobacco was given to each subject under fasting state and effects on pulse and blood pressure (BP) recorded. RESULTS: At baseline the pulse rate was 75.1 +/- 9.0 per minute, systolic BP was 119.1 +/- 10.8 mm Hg, and diastolic BP was 78.0 +/- 7.5. The pulse rate increased to 87.5 +/- 11.4 at ten minutes (+16.9 +/- 12.6%, p < 0.001) and fell to 76.7 +/- 9.1 at 30 minutes (p = ns). Systolic BP increased to 122.3 +/- 11.7 mm Hg at 10 minutes (+2.73 +/- 5.1%, p < 0.001) and was 120.8 +/- 10.8 at 30 minutes; while diastolic BP was 80.8 +/- 7.3 at 10 minutes (+3.83 +/- 6.1%, p < 0.001) and 79.4 +/- 7.6 at 30 minutes. CONCLUSIONS: Pan masala intake causes acute increase in pulse and BP.

Role of redchilli (Capsaicin) in the formation of colonic carcinoma.

The effect of feeding redchilli (Capsaicin) powder on the histopathological changes occurring in the colonic mucosa was studied in rats. These animals were compared with those treated with a colonic carcinogen 1,2-dimethylhydrazine (DMH). Animals fed with redchilli, dimethylhydrazine, dimethylhydrazine plus redchilli powder showed polyp and dysplasia, malignant tumour and malignant tumour with transitional area of dysplasia.