Search results for "psa"
showing 10 items of 286 documents
Glucose, fructose and saccharose metabolism in Dipsacus silvestris infected by Cucumber mosaic virus.
2007
Dipsacus silvestris Miller (or Fuller’s Teasel) (Dipsacaceae) showing stunting, chlorotic leaf mosaic and narrowing of the lamina, has been found for the first time in Italy naturally infected by Cucumber mosaic virus (CMV). This virus was detected in PAS-ELISA tests and molecularly characterized by applying RT-PCR, using specific primers for the movement protein gene of RNA3 (forward 5’ CTA GGC TTT CCA AGC TAC CAG 3’; reverse 5’ CTA AAG ACC GTT AAC CAC CTG C 3’). The content of glucose, fructose and saccharose, determined by HPLC analysis, was calculated in both healthy (h) and CMV-infected (i) D. silvestris plants during the chronic infection period. An higher content of these carbohydrat…
Oro-gustatory perception of dietary lipids and calcium signaling in taste bud cells are altered in nutritionally obesity-prone Psammomys obesus.
2013
Since the increasing prevalence of obesity is one of the major health problems of the modern era, understanding the mechanisms of oro-gustatory detection of dietary fat is critical for the prevention and treatment of obesity. We have conducted the present study on Psammomys obesus, the rodent desert gerbil which is a unique polygenic natural animal model of obesity. Our results show that obese animals exhibit a strong preference for lipid solutions in a two-bottle test. Interestingly, the expression of CD36, a lipido-receptor, in taste buds cells (TBC), isolated from circumvallate papillae, was decreased at mRNA level, but remained unaltered at protein level, in obese animals. We further st…
Capsaicin Intake and Oral Carcinogenesis: a Systematic Review
2021
Background Chili is the most heavily and frequently consumed spice, either as a flavouring or colouring agent, and it is also a major source of pro-vitamin A, vitamin E and C. The main capsinoidcapsaicinoid found in chili peppers is capsaicin. It has been demonstrated that capsaicin acts as a cancer-suppressing agent through its antioxidant and anti-inflammatory effects, by blocking several signal transduction pathways. Oral squamous cell carcinoma is one of the most prevalent cancer worldwide. It is noteworthy that in countries where populations of diverse ethnic groups co-exist, differences have been observed in terms of incidence of oral cancer. The variances in their diet could explain,…
Application of TLC and GC-MS to the detection of capsaicin from hot peppers(Capsicum annuum)
2004
Capsaicin was extracted from red hot pepper (Capsicum annuum) fruits and from commercial red hot pepper powder and separated on silica gel 60 plates with concentration zone (Merck); toluene-acetone-chloroform, 45 + 30 + 25 ( v/v ), was used as mobile phase. Detection was performed by exposure to iodine vapor. The spots assumed to arise from capsaicin were removed from the plate and the components were extracted with chloroform. The extracts were analyzed by gas chromatography combined with mass spectrometry.
Newest Results on the Chemistry and Pharmacology of TCM Drugs Containing Triterpene and Steroid Saponins
2012
The aim of this review is to provide newest results in the chemistry, pharmacology, and clinical studies of saponins-containing TCM drugs, some of them being listed in the Chinese Pharmacopoeia. It appears that literature on triterpene saponins is more abundant than that of steroid saponins, and ginseng occupies a prominent position in the list. However, other TCM drugs are well documented in recent years belonging to the genera Astragalus, Gynostemma, Bupleurum, Clematis, Dipsacus, Platycodon, Gypsophila, Anemarrhena, Lonicera, Paris, Dioscerea, Tribulus, and Ophiopogon. From a Pharmacological point of view, the most relevant results have been obtained with the cancer-related activity and …
Skrejvaboļu (Coleoptera, Carabidae) sabiedrības sausos kaļķainos zālājos un tās ietekmējošie faktori Abavas senlejā
2016
Kā Eiropā tā Latvijā sausu, kaļķainu zālāju platības ar katru gadu samazinās. Šis biotops ir viens no sugām bagātākajiem, tomēr uzskatāms par Latvijā izzūdošu, jo aizņem vairs tikai 0,05% no valsts teritorijas (Auniņš 2013). Šī darba mērķis ir noskaidrot zālāju apsaimniekošanas un botāniskās kvalitātes ietekmi uz skrejvaboļu (Carabidae) sabiedrībām sausos, kaļķainos zālājos. Pētījums veikts sausos, kaļķainos zālājos, dabas parka “Abavas senleja” posmā starp Kandavas un Sabiles pilsētām. Septiņpadsmit parauglaukumos, kas iedalīti atšķirīgās botāniskās kvalitātes un apsaimniekošanas veida grupās, ar Bārbera tipa augsnes lamatām, ievākti kvantitatīvi dati par skrejvaboļu sastopamību. Noteikts …
Cryptanalysis of Knapsack Cipher Using Ant Colony Optimization
2018
Ant Colony Optimization is a search metaheuristic inspired by the behavior of real ant colonies and shown their effectiveness, robustness to solve a wide variety of complex problems. In this paper, we present a novel Ant Colony Optimization (ACO) based attack for cryptanalysis of knapsack cipher algorithm. A Cipher-text only attack is used to discover the plaintext from the cipher-text. Moreover, our approach allows us to break knapsack cryptosystem in a minimum search space when compared with other techniques. Experimental results prove that ACO can be used as an effective tool to attack knapsack cipher.
Finalità aziendali e Conceptual Framework. Soggetti destinatari dell'informazione e contrapposizioni di interessi.
2014
(ENTITY’S ENDS AND CONCEPTUAL FRAMEWORK. USERS OF FINANCIAL INFORMATION AND CONFLICTS OF INTERESTS). Conceptual Frameworks supply the rational bases upon which financial reports standards are built. Their study, then, is of core relevance for fully understanding essentials and trends of financial reports standard peculiar contents. Thus, in this work, the authors read again the structures of the two main International Frameworks (namely, the ‘private’ one by the IASB, and the ‘public’ one by the IPSASB) under the diachronic light shed by a critical and historical survey. This dynamic reading of the basic assumptions and principles of Conceptual Frameworks (from now on, simply, CF) focuses o…
Experimental modeling of bacterially-induced Ca carbonate precipitation: new insights on possible mechanisms.
2015
The contribution of microorganisms, particularly bacteria, in carbonate mineral formation, the main natural processes controlling CO2 level in the atmosphere, has played an important role since the Archean Eon. In this study we review our recent experimental work on CaCO3 precipitation induced by two anoxygenic phototrophic bacteria (APB), Rhodovulum steppense A-20sT and Rhodovulum sp. S-17-65, and by cyanobacteria Gloeocapsa sp. f-6gl. These bacteria are representatives of two important groups of photosynthetic organisms present at the Earth surface both in the past and at the present times. The mechanisms of organomineralization deriving from APB and cyanobacteria activities are drastical…