75 research outputs found
Gathering the limbs of the text in Shelley Jackson’s "Patchwork girl"
Shelley Jackson’s Patchwork Girl is not simply a new recreation of Mary Shelley’s
Frankenstein in hypertext format; it also tries to develop some of the implications in the
original text from the paradigms of contemporary science and criticism. This study is an
attempt to bring to light the ways in which these paradigms, characterized by their emphasis
on fragmentariness, are made to interact dialogically with Shelley’s novel in order to produce
a postmodern version of the old Promethean myth. Apart from exploring the filial
connections that one might expect in any rewriting exercise, this essay focuses on the way
Jackson questions the concept of authorship, origin(ality) and literary property, and related
issues such as intertextuality and assemblage, all of which are indices of the theoretical
concerns underlying Jackson's text and of the ways in which it follows, re-writes or invites us
to re-read Shelley's “hideous progeny
Fast Forward to the Past: Revisiting Trauma after the Fall
The representation of traumatic experience usually brings to the surface an element that has been long repressed. To a great extent it also implies “breaking the silence” imposed by an authoritarian voice proposing a one-dimensional version of the historical Real. This paper analyses the way in which some recent films —which dramatize the collateral effects of the collapse of Communist regimes— offer new representations of actual historical events and address a common and, at the same time varied, European concern for coming to terms with a recent traumatic past. The films feature their protagonists trapped in a characteristic traumatic paradox as they have to reconcile testimonial accuracy with the essential ineffability of their experiences. However, guided by a common desire to rewrite the past and to heal personal and collective wounds, they resort to the materiality of objects which function as what Pierre Nora terms ‘lieux de mémoire’, that is, new signifiers for the (re)creation of a different History
Literatura y política en Sudáfrica: la apropiación del otro en "Waiting for the Barbarians" de J.M. Coetzee
Proteomic analysis of goat milk kefir: profiling the fermentation-time dependent protein digestion and identification of potential peptides with biological activity
Kefir is a fermented dairy product, associated to health benefits because of being a probiotic and due to the presence of molecules with biological activity. In this work, we have profiled the peptide composition of goat milk kefir at three different fermentation times using a peptidomics approach, in order to study changes in peptide concentrations and patterns of protein digestion throughout the fermentation time. We identified 2328 unique peptides corresponding to 22 protein annotations, with a maximum of peptides found after 24 h fermentation. We established different digestion patterns according to the nature of the proteins, and quantified the changes in the peptides appearing in all the fermentation times. We also identified 11 peptides that matched exactly to sequences with biological activity in databases, almost all of them belonging to caseins. This is the most comprehensive proteomic analysis of goat milk kefir to date
A multicenter case-control study comparing sun exposure habits and use of photoprotection measures in patients diagnosed with different types of skin cancer
Melanoma; Photoprotection measures; Squamous cell carcinomaMelanoma; Mesures de fotoprotecció; Carcinoma de cèl·lules escamosesMelanoma; Medidas de fotoprotección; Carcinoma de células escamosasBackground
While skin cancer awareness programs have significantly furthered public understanding about the harmful effects of the sun, there is a disparity between photoprotection knowledge and protection practices.
Objective
To compare sun exposure habits and photoprotection measures in patients diagnosed with basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and melanoma versus controls.
Methods
Multicentre case–control observational study carried out by 13 Spanish dermatologists between April 2020 and August 2022. Patients diagnosed with BCC, SCC, or melanoma were considered cases. The control group consisted of individuals with no history of skin cancer.
Results
Of the 254 cases (56.2% female; mean age, 62.67 ± 15.65), 119 (31.2%) had BCC, 62 (16.27%) SCC, and 73 (19.1%) melanoma. The control group consisted of 127 (33.33%) individuals. Avoiding sun exposure between 12:00 and 16:00 was the most commonly used photoprotection measure (habitually/always: 63.1%), followed by the use of sunscreen (habitually/always: 58.9%). Patients with melanoma were less likely to use clothing and shade to avoid sun exposure (p 50. No differences were observed in photoprotection measures between people with and without a previous history of skin cancer.
Conclusions
We describe differences in photoprotection measures and sun exposure patterns among patients diagnosed with different skin tumor types. Whether these differences may influence the type of tumor each developed will require further investigation
The Influence of the Exposome in the Cutaneous Squamous Cell Carcinoma, a Multicenter Case–Control Study
Exposome; Squamous cell carcinomaExposoma; Carcinoma cutáneo de células escamosasExposoma; Carcinoma cutani de cèl·lules escamosesIntroduction: The concept of exposome refers to the total of harmful and beneficial environmental exposures that can help predict the organism’s biological responses over time. Ultraviolet radiation (UVR) from sun exposure has been recognized as the main etiological agent of skin cancer, and squamous cell carcinoma (SCC) is one most commonly associated with chronic exposure. However, in recent years, evidence suggests that lifestyle, environmental pollution, and contaminants in water and food can have an influence. Objectives: To study the relationship between SCC and sun exposure, pollution, stress, and lifestyle in a Spanish cohort. Materials and Method: A multicenter case–control study was carried out in which 13 dermatologists from different regions of Spain recruited cases and controls between April 2020 and August 2022. The group of cases were patients diagnosed with SCC and, as a control group, people who attended Dermatology consultations as companions with no history of skin cancer. Results: A total of 62 patients with SCC and 126 controls were included (62.9% males, median age 76.46 (10.1) and 33.3%, median age 55.7 (15), respectively). The SCC group had experienced more outside work than the controls (75% vs. 22.4%, p < 0.001), less recreational exposure (sunbathing, p = 0.05, and outdoor sports, p = 0.01), and a lower annual income (p = 0.01), with an increase in tobacco exposure (p < 0.001), without differences in other carcinogens, such as ionizing radiation or chemical exposure. The control group had a higher daily screentime use (p < 0.001) and practiced more relaxation activities (p = 0.03). A higher linolenic acid intake and lower coffee consumption were the only dietary variables associated with SCC (p < 0.05). Some chronic medications (anxiolytics, antidepressants, beta-blockers, statins, hydrochlorothiazide, ACE inhibitors, metformin, and omeprazole) were also statistically associated with SCC. Statistical significance for all aforementioned variables was maintained in the multivariate analysis (p < 0.05). Conclusions: The study found a significant association between SCC and multiple exposome-related factors in addition to chronic sun exposure in the Spanish population. Primary prevention strategies should target specific populations, such as outdoor workers promoting sun-safe behaviors and stress-reducing activities, in addition to adequate skin photoprotection in patients under certain medications associated with SCC
HPLC-MS/MS Analyses Show That the Near-Starchless aps1 and pgm Leaves Accumulate Wild Type Levels of ADPglucose: Further Evidence for the Occurrence of Important ADPglucose Biosynthetic Pathway(s) Alternative to the pPGI-pPGM-AGP Pathway
In leaves, it is widely assumed that starch is the end-product of a metabolic pathway exclusively taking place in the chloroplast that (a) involves plastidic phosphoglucomutase (pPGM), ADPglucose (ADPG) pyrophosphorylase (AGP) and starch synthase (SS), and (b) is linked to the Calvin-Benson cycle by means of the plastidic phosphoglucose isomerase (pPGI). This view also implies that AGP is the sole enzyme producing the starch precursor molecule, ADPG. However, mounting evidence has been compiled pointing to the occurrence of important sources, other than the pPGI-pPGM-AGP pathway, of ADPG. To further explore this possibility, in this work two independent laboratories have carried out HPLC-MS/MS analyses of ADPG content in leaves of the near-starchless pgm and aps1 mutants impaired in pPGM and AGP, respectively, and in leaves of double aps1/pgm mutants grown under two different culture conditions. We also measured the ADPG content in wild type (WT) and aps1 leaves expressing in the plastid two different ADPG cleaving enzymes, and in aps1 leaves expressing in the plastid GlgC, a bacterial AGP. Furthermore, we measured the ADPG content in ss3/ss4/aps1 mutants impaired in starch granule initiation and chloroplastic ADPG synthesis. We found that, irrespective of their starch contents, pgm and aps1 leaves, WT and aps1 leaves expressing in the plastid ADPG cleaving enzymes, and aps1 leaves expressing in the plastid GlgC accumulate WT ADPG content. In clear contrast, ss3/ss4/aps1 leaves accumulated ca. 300 fold-more ADPG than WT leaves. The overall data showed that, in Arabidopsis leaves, (a) there are important ADPG biosynthetic pathways, other than the pPGI-pPGM-AGP pathway, (b) pPGM and AGP are not major determinants of intracellular ADPG content, and (c) the contribution of the chloroplastic ADPG pool to the total ADPG pool is low.This research was partially supported by the grants [BIO2010-18239] from the Comisión Interministerial de Ciencia y Tecnología and Fondo Europeo de Desarrollo Regional (Spain) and [IIM010491.RI1] from the Government of Navarra, and by Iden Biotechnology. This research was also supported by Scientific Research on Innovative Areas [22114507] and Grants-in-Aid for Scientific Research (B) [22380186] from the Ministry of Education, Culture, Sports, Science and Technology, Japan.Peer Reviewe
Quantitative proteomic analysis of Pseudomonas pseudoalcaligenes CECT5344 in response to industrial cyanide-contain ing wastewaters using Liquid Chromatography- Mass Spectrometry/Mass Spectrometry (LC- MS/MS)
Biological
treatments
to degrade
cyanide
are
a powerful
technology
for
cyanide
removal
from
industrial
wastewaters.
It has
been
previously
demonstrated
that
the
alkaliphilic
bacterium
Pseudomonas
pseudoalcali
genes
CECT5344
is able
to use
free
cyanide
and
several
metal
−
cyanide
complexes
as
the
sole
nitrogen
source.
In this
work,
the
strain
CECT5344
has
been
used
for
detoxification
of the
different
chemical
forms
of cyanide
that
are
present
in alkaline
wastewaters
from
the
jewelry
industry.
This
liquid
residue
also
contains
large
concentration
s
of metals
like
iron,
copper
and
zinc,
making
this
wastewater
even
more
toxic.
To
elucidate
the
molecular
mechanisms
involved
in the
bioremediation
process,
a quantitative
proteomic
anal-
ysis
by
LC-MS/MS
has
been
carried
out
in
P
.
pseudoalcaligene
s
CECT5344
cells
grown
with
the
jewelry
residue
as
sole
nitrogen
source.
Different
proteins
related
to cyanide
and
cyanate
assimilation,
as
well
as
other
proteins
involved
in transport
and
resistance
to metals
were
induced
by
the
cyanide-cont
aining
jewelry
residue.
GntR-like
regulatory
proteins
were
also
induced
by
this
industrial
residue
and
mutational
analysis
revealed
that
GntR-like
regulatory
proteins
may
play
a role
in the
regulation
of cyanide
assimilation
in
P
.
pseudoalcaligene
s
CECT5344.
The
strain
CECT5344
has
been
used
in a batch
reactor
to remove
at pH
9 the
dif-
ferent
forms
of cyanide
present
in industrial
wastewaters
from
the
jewelry
industry
(0.3
g/L,
ca
.
12
mM
total
cyanide,
including
both
free
cyanide
and
metal
−
cyanide
complexes).
This
is
the
first
report
describing
the
biological
removal
at alkaline
pH
of such
as
elevated
concentra-
tion
of cyanide
present
in a heterogeneou
s mixture
from
an
industrial
source
Enhancing sucrose synthase activity results in increased levels of starch and ADP-glucose in maize (Zea mays L.) seed endosperms.
Póster presentado en el XIII Congresso Luso-Espanhol de Fisiologia Vegetal, celebrado en Lisboa del 24 al 28 de julio de 2013.Sucrose synthase (SuSy) is a highly regulated cytosolic enzyme that catalyzes the
conversion of sucrose and a nucleoside diphosphate into the corresponding nucleoside
diphosphate glucose and fructose. In cereal endosperms, it is widely assumed that the
stepwise reactions of SuSy, UDPglucose pyrophosphorylase and ADPglucose (ADPG)
pyrophosphorylase (AGP) take place in the cytosol
to convert sucrose into ADPG
necessary for starch biosynthesis, although it has been also suggested that SuSy may
participate in the direct conversion of sucrose into ADPG. In this study, the levels of the
major primary carbon metabolites, and the activities of starch metabolism related
enzymes were assessed in endosperms of transgenic maize plants ectopically
expressing
StSUS4
, which encodes a potato SuSy isoform. A total of 29 fertile lines
transformed with
StSUS4
were obtained, 5 of them containing a single copy of the
transgene that was still functional after five generations. The number of seeds per ear
of the 5 transgenic lines containing a single
StSUS4
copy was comparable to that of
wild type (WT) control seeds. However, transgenic seeds accumulated
10-15% more
starch at the mature stage, and contained a higher amylose/amylopectin balance than
WT seeds. Endosperms of developing
StSUS4-expressing seeds exhibited a
significant increase in SuSy activity, and in starch and ADPG contents when compared
with
WT endosperms. No significant changes could be detected in the transgenic
seeds in soluble sugars content, and in activities of starch metabolism related enzymes
when compared to WT seeds. A suggested metabolic model is presented wherein both
AGP and SuSy
are involved in the production of ADPG linked to starch biosynthesis in
maize endosperm cells.This research was partially supported by grant BIO2010-18239 from the Comisión Interministerial de Ciencia y Tecnología and Fondo Europeo de Desarrollo Regional (Spain), by Iden Biotechnology SL, and by the Government of Navarra (grant IIM01491.RI1).Peer Reviewe
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