Extracts of the flower petals of Impatiens balsamina L. contain enzymes which catalyze the glycosylation of phenolic compounds. Enzymes have been extracted which glycosylate hydroquinone to arbutin and at least 3 different flavonols to the 3-monoglucoside. The hydroquinone glucosylating enzyme is similar to enzymes previously described except that it requires an unidentified low molecular weigh...

The anthocyanins of the fruit skin of Iranian forest pear (Sange Khouj) were separated, identified and quantified using high-performance liquid chromatography/diode array detection (HPLC/DAD) and HPLC/electrospray ionization /mass spectrometry (HPLC/ESI /MS). The individual anthocyanins were identified by comparing their mass spectral data and retention times with those of standards and publish...

Hypothesis Anthocyanins possess well-known biological effects and suppress DNA damage induced by therapeutic topoisomerase poisons. Our study focusses on the modulatory effects of anthocyanidins-malvidin (MAL) and pelargonidin (PEL)-on topoisomerase II poison mitoxantrone (MXT)-induced cytotoxicity and genotoxicity in in vitro and in vivo conditions. Study design HepG2 cells were treated with M...

background: the purpose of this study was to describe the knowledge and attitude of pregnant women in qazvin province, central iran, relating to oral hygiene. methods: the study group comprised of 760 pregnant women living in qazvin, center of iran in 2004. the questions were formulated to evaluate information without the need for dental examination. the age groups between 17-41 years old were ...

fasting is a religious obligation, which can be challenging for individuals with oral conditions due to its stringent code of conduct. moreover, food abstinence during fasting can restrict oral feeding even further in patients whose nutrition has been already compromised. previous research has mainly concentrated on oral hygiene and gum health, disregarding orodental conditions and diseases. th...

oral malignant melanoma (omm) accounts for 5% of all oral malignancies. it is a rare aggressive neoplasm usually found on the hard palate and gingiva. the etiology is unknown, but tobacco and chronic irritation are suggested as probable causative factors. over 30% of the cases have been reported to arise from pre-existing pigmented lesions. a biopsy is required to establish the diagnosis and th...

background and aims. a correct diagnosis is the most important step in the treatment of oral lesions and each oral lesion has specific clinical features that provide clinical diagnosis; however, some of these features are common among different lesions. in these situations, biopsy and histopathological examination are indicated. the aim of this study was to evaluate the relationship between cli...

introduction the frequency of pediatric and adolescent oral and maxillofacial lesions is various in different societies. the present study aimed at investigating the frequency of oral and maxillofacial pediatric and adolescent biopsies in zahedan (southeast iran), and compare the results with other epidemiologic studies.methods and materials this retrospective study reviewed oral and maxillofac...

A new iridoid glucoside, cornusoside A (1), and four new natural product iridoid aglycones, cornolactones A-D (2-5), together with 10 known compounds were isolated from the leaves of Cornus florida. The structures of compounds 1-5 were established by interpretation of their spectroscopic data. Cornolactone B (3) is the first natural cis-fused tricyclic dilactone iridoid containing both a five- ...