Search results for " plants"
showing 10 items of 860 documents
Vascular flora evolution in the Soqotra Archipelago (Indian Ocean)
2012
The main floristic and vegetational features of the Soqotra Archipelago are outlined. The theories of vicariance and dispersal are commented with the support of examples suggesting the idea that both are complementary in the establishment and evolution of the flora of Soqotra. Finally the relation of alien vs natural elements of the flora is analyzed.
Natural products for the treatment of Type 2 Diabetes Mellitus
2015
Type 2 diabetes mellitus is a metabolic disease characterized by persistent hyperglycemia. High blood sugar can produce long-term complications such as cardiovascular and renal disorders, retinopathy, and poor blood flow. Its development can be prevented or delayed in people with impaired glucose tolerance by implementing lifestyle changes or the use of therapeutic agents. Some of these drugs have been obtained from plants or have a microbial origin, such as galegine isolated from Galega officinalis, which has a great similarity to the antidiabetic drug metformin. Picnogenol, acarbose, miglitol, and voglibose are other antidiabetic products of natural origin. This review compiles the princi…
Tucupentol, a novel mono-tetrahydrofuranic acetogenin from Annona montana, as a potent inhibitor of mitochondrial complex I.
2009
Ten acetogenins, one of them new, were isolated from leaves and twigs of a Bolivian collection of Annona montana. The new compound that we named tucupentol (1) is a mono-tetrahydrofuranpentahydroxy-acetogenin. The inhibitory potency of tucupentol (1) on the mitochondrial complex I was evaluated, and this activity was compared with that of the known acetogenins, annonacin-A, cisannonacin-10-one, aromin, and gigantetronenin, also isolated from this plant material. The mentioned acetogenins acted as selective inhibitors of mitochondrial complex I in the 0.8-5.4-nM range. Fil: Álvarez Colom, Olga. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química …
Microplastics in water, from treatment process to drinking water: analytical methods and potential health effects
2022
[Aim]: The commonly used analytical methods for microplastic (MPs) detection in drinking water and the threat of MP pollution in water intended for human consumption to human beings are presented through a systematic review. Furthermore, MP occurrence, transport, and fate from raw to treated drinking water, tap water, and bottled water, as well as the possible health impacts of MPs on human beings, are also evaluated. [Methods]: Systematic review included articles published in scientific journals that contain specific keywords in the title and were searched in Web of Science (WOS) and Scopus. The literature was selected and extracted by two reviewers based on the PRISMA-A guidelines, which …
Chemical inducers of resistance in plants
2007
International audience; Resistance of plants towards potential pathogens is regulated by a variety of different local or systemic defence mechanisms which are either constitutively active or inducible upon challenge with a pathogen. Based on the knowledge acquired in studies on the molecular and biochemical mechanisms underlying especially different natural induced resistance phenomena, chemical inducers of resistance, derived both from plants or microorganisms or generated synthetically have been characterised and used to improve plant health. This article gives an overview on the present knowledge on resistance inducers and points to possible applications in the future.
ENERGY RECOVERY FROM REGASIFICATION OF LNG
2012
The international forecasts on energy consumption in the next future show an increasing trend due also to growing markets, and among this the leading emerging economies connected to BRICS countries (Brazil, Russia, India, China and South Africa). We need more and more energy. On the other side the environmental problem is arising and the climate change is a more and more pressing emergency. The latest environmental disasters, as the oil spill in the Gulf of Mexico in 2010 and the earthquake with the following tsunami in Japan in 2011, struck the public opinion and so, as in many European countries, the nuclear program is under a deep revision or even stopped. So it is necessary to utilize a…
Sustainable Development and Technological Impact on CO2 Reducing Conditions in Romania
2015
Climate change is a reality all over the world, and its complexity is increasing. Therefore, sustainability has become a national and international concern, ingrained in many organizational processes. The ability of organizations to respond to sustainability concerns is sometimes hindered by the complexity of integrating sustainability into business models and by the need to rethink their strategic directions. In Romania, sustainable development has become a priority for businesses, but even though companies are showing some concern, there are yet to demonstrate any full commitment (they are mainly concerned with areas such as society and the environment). This paper assesses Romania’s invo…
IL PROBLEMA DELLA RILEVANZA PENALE DELLA COLTIVAZIONE DI PIANTE DA STUPEFACENTI TRA OFFENSIVITA' E RAGIONEVOLEZZA
2021
The problem of criminal relevance of cultivation of narcotic plants can be considered an interesting opportunity to evaluate the interaction, on the interpretative level, related to the principles of harmfulness and reasonableness, understood as balancing criterion between opposite values. The author examines two jurisprudential interpretative ways to exclude the punishability for small “domestic” cultivations of narcotic plants. The first attempt was to contest the constitutional legitimacy of Article 75 of the d.P.R. 309/1990, because it doesn’t include, as an administrative offence, minimal cultivations for the purpose of personal consumption. The second attempt was to exclude any puniti…
Cytotoxicity of medicinal plants of the West-Canadian Gwich׳in Native Americans towards sensitive and multidrug-resistant cancer cells
2015
Abstract Ethnopharmacological relevance Traditional medicine of the Native Americans has a long tradition of medicinal plants, which also influenced modern oncology. For instance, podophyllotoxin the active ingredient of Podophyllum peltatum L. (Berberidaceae) used by Native Americans to treat warts led to the development of etoposide and teniposide. In the present investigation, we studied 10 medicinal plants used by the Gwich׳in First Nation of West-Canada, which have been used against diverse diseases including cancer. Material and methods Sensitive and multidrug-resistant (MDR) tumor cell lines expressing various ATP-binding cassette (ABC) transporters (P-glycoprotein/ ABCB1/MDR1 , MRP1…
Risk of classic Kaposi sarcoma with exposures to plants and soils in Sicily
2010
Abstract Background Ecologic and in vitro studies suggest that exposures to plants or soil may influence risk of Kaposi sarcoma (KS). Methods In a population-based study of Sicily, we analyzed data on contact with 20 plants and residential exposure to 17 soils reported by 122 classic KS cases and 840 sex- and age-matched controls. With 88 KS-associated herpesvirus (KSHV) seropositive controls as the referent group, novel correlates of KS risk were sought, along with factors distinguishing seronegatives, in multinomial logistic regression models that included matching variables and known KS cofactors - smoking, cortisone use, and diabetes history. All plants were summed for cumulative exposu…