scholarly journals Pheophorbide a in Hydrobia ulvae faecal pellets as a measure of microphytobenthos ingestion: variation over season and period of day

2011 ◽  
Vol 13 (2) ◽  
pp. 119-126 ◽  
Author(s):  
H Coelho ◽  
P Cartaxana ◽  
V Brotas ◽  
H Queiroga ◽  
J Serôdio
Keyword(s):  
Pheophorbide A ◽  
Faecal Pellets ◽  
Hydrobia Ulvae

Feeding rates of continually submerged Hydrobia ulvae vary during the daylight hours

2003 ◽  
Vol 83 (6) ◽  
pp. 1273-1275 ◽  
Author(s):  
R.S.K. Barnes
Keyword(s):  
Time Of Day ◽  
Feeding Rates ◽  
Faecal Pellets ◽  
Hydrobia Ulvae

Feeding, as estimated by egestion rate, in coastal epibenthic mud snails Hydrobia ulvae living continually submerged in lagoon-like conditions varies significantly with time of day. Both in the field and in the laboratory, egestion rate is maximal around mid-day and minimal at twilight. This variation, here ranging in magnitude from mean lows of some nine faecal pellets h−1 to highs of 34 h−1, is consonant with likely rhythms of availability and productivity of their microphytobenthic food.

Optimized Combination of Photodynamic Therapy and Chemotherapy Using Gelatin Nanoparticles Containing Tirapazamine and Pheophorbide a

2021 ◽  
Vol 13 (9) ◽  
pp. 10812-10821
Author(s):  
Donghyun Lee ◽  
Seok-young Jang ◽  
Soonmin Kwon ◽  
Yeeun Lee ◽  
Eunyoung Park ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Pheophorbide A ◽  
Gelatin Nanoparticles

scholarly journals Phytolith and Calcitic Spherulite Indicators from Modern Reference Animal Dung from Mediterranean Island Ecosystems: Menorca, Balearic Islands

2021 ◽  
Vol 11 (16) ◽  
pp. 7202
Author(s):  
Marta Portillo ◽  
Kate Dudgeon ◽  
Montserrat Anglada ◽  
Damià Ramis ◽  
Yolanda Llergo ◽  
...  
Keyword(s):  
Biosphere Reserve ◽  
Balearic Islands ◽  
Island Ecosystems ◽  
Human Environment ◽  
Factors Affecting ◽  
Faecal Pellets ◽  
Fundamental Information ◽  
Animal Dung ◽  
Interdisciplinary Approaches ◽  
Mediterranean Island

This study illustrates the contribution of plant and faecal microfossil records to interdisciplinary approaches on the identification, composition, taphonomy and seasonality of livestock dung materials. The focus is on the taphonomy of opal phytoliths and calcitic dung spherulites embedded within modern faecal pellets collected from pasture grounds and pens from a range of animals, including cattle, sheep and pigs from three different farms and seasons of the year in Menorca (Balearic Islands, Spain) declared a Biosphere Reserve by UNESCO. Modern reference materials provide comparative plant and dung microfossil indicators on factors affecting the formation, composition, preservation and decay of animal faeces, as well as on the diverse environmental and anthropogenic aspects influencing these. The reported results show relevant changes in phytolith and spherulite composition according to animal species and age, livestock management, seasonality, and grazing and foddering regimes. Both microfossil records provide fundamental information on taphonomic issues that are understudied, such as the variation in the digestibility among different species, including under investigated animals such as pigs, as well on the seasonality of plant and faecal microfossils that are excreted with dung as an important material for reconstructing human-environment interactions which is commonly overlooked in archaeology.

scholarly journals Pheophorbide a: State of the Art

Marine Drugs ◽  
2020 ◽  
Vol 18 (5) ◽  
pp. 257 ◽  
Author(s):  
Assunta Saide ◽  
Chiara Lauritano ◽  
Adrianna Ianora
Keyword(s):  
Clinical Trials ◽  
Photodynamic Therapy ◽  
Anticancer Activity ◽  
State Of The Art ◽  
Human Cancer ◽  
Human Cancer Cell ◽  
Pheophorbide A ◽  
Human Cancer Cell Lines ◽  
Chlorophyll Breakdown ◽  
Chlorophyll Derivative

Chlorophyll breakdown products are usually studied for their antioxidant and anti-inflammatory activities. The chlorophyll derivative Pheophorbide a (PPBa) is a photosensitizer that can induce significant anti-proliferative effects in several human cancer cell lines. Cancer is a leading cause of death worldwide, accounting for about 9.6 million deaths, in 2018 alone. Hence, it is crucial to monitor emergent compounds that show significant anticancer activity and advance them into clinical trials. In this review, we analyze the anticancer activity of PPBa with or without photodynamic therapy and also conjugated with or without other chemotherapic drugs, highlighting the capacity of PPBa to overcome multidrug resistance. We also report other activities of PPBa and different pathways that it can activate, showing its possible applications for the treatment of human pathologies.

Predation of the shelduck Tadorna tadorna on the mud snail Hydrobia ulvae

2008 ◽  
Vol 43 (4) ◽  
pp. 1193-1199 ◽  
Author(s):  
N. R. Anders ◽  
T. Churchyard ◽  
J. G. Hiddink
Keyword(s):  
Hydrobia Ulvae ◽  
Mud Snail

Importance of copepod faecal pellets to the fate of the DSP toxins produced by Dinophysis spp.

Harmful Algae ◽  
2002 ◽  
Vol 1 (4) ◽  
pp. 333-341 ◽  
Author(s):  
I. Maneiro ◽  
C. Guisande ◽  
M. Frangópulos ◽  
I. Riveiro
Keyword(s):  
Faecal Pellets ◽  
Dsp Toxins
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