Drosera rotundifolia 30c homeopathic pillules

Drosera rotundifolia is a perennial insectivorous herb which occupies open, wet, oligotrophic habitats such as acidic bogs and poor fens, and specifically grows in Sphagnum-dominated communities. Since mediaeval times the species has been collected from natural habitats and used as a remedy for coughs and pulmonary diseases. Due to the substantial decline of Drosera habitat, the plant has been protected in most European countries since the 1980s, which means that wild D. rotundifolia has become unavailable to the pharmaceutical industry. The persistent demand has stimulated research into the cultivation of Drosera in several European countries. These studies have shown that Drosera cultivation is time-consuming and not (yet) cost-effective, and there is a need for the development of cultivation methods. This article reviews the morphology, distribution, ecology and reproduction of Drosera rotundifolia; outlines its commercial use and nature conservation requirements; and describes previous research on its propagation and cultivation.

Abstract licence: CC BY

AbstractMonographs of the European Pharmacopoeia (Ph. Eur.) are the basis for quality control of medicinal plants and therefore important to ensure the consistency, quality, safety, and efficacy of phytopharmaceuticals. The traditional medicinal plant sundew (Drosera sp.) has disappeared from therapy due to nature conservation, but can now be cultivated sustainably on rewetted peatland. However, currently there is no valid Ph. Eur. monograph for the quality control of Droserae herba. In this study, sundew material from different species and sources was investigated with the aim of developing quality control methods based on the Ph. Eur. and defining a uniform quality standard for Droserae herba. It was possible to distinguish between sundew species of different quality, using macroscopic, microscopic, and chromatographic methods. Special emphasis was laid on the content of flavonoids and naphthoquinones as important quality parameters as their content differed between the sundew species. The differences in content and toxicity result in the recommendation that only round‐leaved sundew (Drosera rotundifolia L.) should be used as a medicinal plant for the production of phytopharmaceuticals in the future.

Abstract licence: CC BY-NC-ND 4.0

Homeopathy is a popular alternative medical practice globally. However, homeopathic formulations can cause allergies, anaphylaxis, fatal cardiovascular events, kidney injury, liver failure, and death due to their direct and indirect toxicities. This study examined commonly prescribed homeopathic formulations from 3 categories: classical dilutions, mother tinctures, and proprietary products. This cross-sectional study assessed the quality and safety of popular over-the-counter homeopathic formulations. Each remedy underwent complete organic and inorganic content profiling, including heavy metal detection, alcohol quantification, and steroid detection. We analyzed 134 homeopathic remedies and found high alcohol levels, insect and animal parts, carnivorous plants in alcohol, and toxic heavy metals. Classical dilutions had the highest alcohol content (median: 91.02% v/v). Highly diluted formulations of arsenic and mercury had detectable lead levels. Proprietary medicines also showed various potentially toxic bioactive plant compounds, heavy metal contaminants, industrial-grade solvents, and pharmaceutical intermediates, raising concerns about organ toxicity. Homeopathic formulations revealed high ethanol levels and toxic heavy metals like arsenic, lead, mercury, and cadmium. Tinctures and proprietary formulations contained multiple potentially toxic chemicals. Stricter regulatory oversight is needed, and consumers should be aware that the testimonials and anecdotal claims of homeopathic benefits lack scientific validation and can mask potentially harmful effects.

Abstract licence: CC BY-NC

The successful sustainable cultivation of the well-known medicinal plant sundew on rewetted peatlands not only leads to the preservation of natural populations, but also provides a basis for the sustainable pharmaceutical use of the plant. The bioactive compounds of sundew, flavonoids and naphthoquinones, show biofilm-inhibiting properties against multidrug-resistant, ESBL-producing E. coli strains and open up new therapeutic possibilities. This study investigates the molecular mechanisms of these compounds in biofilm inhibition through proteomic analyses. Specific fractions of flavonoids and naphthoquinones, as well as individual substances like 7-methyljuglone and 2″-O-galloylhyperoside, are analyzed. Results show that naphthoquinones appear to act via central regulatory proteins such as OmpR and alter the stress response while flavonoids likely affect biofilm formation by creating an iron-poor environment through iron complexation and additionally influence polyamine balance, reducing intracellular spermidine levels. Further investigations including assays for iron complexation and analysis of polyamines confirmed the proteomic data. Safety evaluations through cytotoxicity tests in 3D cell cultures and the Galleria mellonella in vivo model confirm the safety of the extracts used. These findings highlight sundew as a promising candidate for new phytopharmaceuticals.

Abstract licence: CC BY

Abstract Carnivorous plants adapt to variations in nutrient availability and shade by altering investment in carnivory in response to different environmental conditions. It is not clear, however, how carnivorous plants might alter investment in carnivory in relation to habitat heterogeneity at small scales. We hypothesised that the carnivorous plant Drosera rotundifolia would alter investment in carnivory and the amount of plant nitrogen (N) derived from prey in response to differences in shade and nutrients between hummock and hollow microforms on patterned peatlands. We investigated D. rotundifolia growing on three peatlands in Northern Europe: Scotland, Sweden, and Finland where we expect microhabitat variability to differ between peatlands due to differences in the ratio of precipitation to evapotranspiration. We measured differences in the density of sticky leaf tentacles (investment in carnivory) and the proportion of plant N that was prey‐derived (%Ndfp) for plants growing on hummocks and hollows at each peatland. At the Finland site P:ET ratio was lowest (1.86), and root N availability was similar for hollows and hummocks. Here, tentacle density and %Ndfp were ~50% higher for plants on hollows than on the more shaded hummocks. At the Scotland site P:ET was highest (5.40), root N availability was lower for hummocks than for hollows, and hummocks were more shaded. Here, there was little difference in tentacle density and %Ndfp between plants growing on hummocks and hollows. The Sweden site was intermediate in terms of P:ET ratio (2.63), habitat heterogeneity, and carnivory. Our results are consistent with the predictions of an evolutionary cost–benefit model for plant carnivory in which the marginal benefits of carnivory decrease with increasing root nutrient availability and decreasing light. This model predicted carnivorous plant phenotypic variability at small scales in response to different extents of habitat heterogeneity at our three study sites. Our study demonstrates the capacity for a carnivorous plant species to vary investment in carnivory, adjusting the proportion of prey‐derived N, in response to small‐scale habitat heterogeneity. We suggest that as well as an adaptation to low‐nutrient conditions, carnivory may also provide a means for plants to adapt to and persist in heterogeneous habitats. Read the free Plain Language Summary for this article on the Journal blog.

Abstract licence: CC BY-NC 4.0

Drosera rotundifolia reaches its southern-most North American extent in Alabama, where it is considered quite rare. Adding to that rarity, previously reported Alabama coastal plain populations are dismissed due to confusion with D. capillaris, while northwestern Alabama populations have either been much reduced or completely destroyed.             The recent discovery of a large, robust colony of Drosera rotundifolia in a remote area of Winston County represents a significant event in the study of Alabama’s carnivorous plants.

Abstract licence: CC BY-NC-ND 4.0