Showing 3 results for Parsa
Soheila Parsapanah, Shahryar Saeidi-Mehrvarz,
Volume 1, Issue 2 (3-2015)
Abstract
Pedicularis L. (Orobanchaceae) is a large hemiparasitic genus, distributed mostly over boreal and arctic-alpine regions of the northern hemisphere. In the present study 9 species of the genus that are reported in flora of Iran, were undertaken for stigma morphological study and numerical analysis. The stigmatic surface is even in P. pycnantha and P. wilhelmsiana, is expanded into a subspherical shape in P. cabulica, P. caucasica, P. rechingeri, P. sibthorpii, P. condensata and P. strausii and is conical form in P. rhinanthoides. To determine the relationship between species, numerical analysis was carried out using 45 quantitative and qualitative morphological, anatomical and palynological characters. UPGMA and PCA dendrograms were drawn. According to the results some characters such as the thickness of pericarp, the thickness of spongy parenchyma, the length of stem, the thickness of bark, the thickness of stem and the length of midrib are the most variable, and can be used for identification and determination of relationship between species.
Fatemeh Gharoony , Shahrbanoo Oryan , Mohammad Nabiuni, Delaram Eslimi Esfahani , Talieh Sadat Hosseinynia, Manijeh Karimian Peiro Karimian Peiro , Soudabeh Parsa ,
Volume 1, Issue 2 (3-2015)
Abstract
Cholestasis caused by the excessive accumulation of bile within the liver, due to intrinsic or extrinsic factors. Cholestasis side effects are associated directly or indirectly with the reduction of bile flow and the confinement of materials related to bile secretion (such as bile acids, bilirubin, and cholesterol). On the other hand, some factors such as opioids, alkaline phosphatase, endotoxin and nitric oxide increase in blood, which could cause tissue damage. Since water intake reduces during cholestasis and hypothalamic nuclei such as paraventricular and supraoptic nucleuses are involved in the regulation of body water; Therefore, in this study, the histopathological changes of hypothalamic nuclei were evaluated. Male Wistar rats weighing 200–250 g were randomly divided into three groups. Three sets of seven groups were unoperated control, sham-operated and bile duct-ligated rats. The tissue samples were analyzed using histotechnique and light microscope. Brain tissue necrosis in paraventricular and supraoptic nucleus in cholestatic rats increased, but in the sham and control rats no changes were observed and also cholestasis caused wrinkle chromatic nuclei and increased thickness of hypothalamic nuclei. Because endotoxin causes tissue trauma, it is likely increased endotoxin may leads to tissue changes in the brain.
Seyedeh Zahra Mousavi Parsaii, Jamil Vaezi, Hamid Ejtehadi, Farshid Memariani, Mohammad Reza Joharchi,
Volume 7, Issue 4 (2-2021)
Abstract
Phelipanche pouyanii is described here as a new species from South Khorassan Province, East of Iran. Its diagnostic morphological features are the calyx teeth being far longer than the calyx tube and staminal filaments being glabrous. These characters clearly differentiated the new species from its closely related taxa, i.e., P. mutelii, P. angustelaciniata and P. nana. Results obtained from the pollen and seed micromorphological characters showed no significant taxonomic value in the delimitation of the new species from its closely related species. The internal transcribed spacer (ITS) sequences, however, showed sufficient differences to delineate the new species from its closely related species.
