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Characterization of an estradiol-independent but estradiol-responsive growth phenotype in a human endometrial adenocarcinoma heterotransplanted into nude mice

The tumor growth phenotype was characterized in relation to concentration of circulating estradiol, estradiol receptor (ER) activation and progesterone receptor (PgR) induction. Ten tumor pieces from an ER and PgR positive human endometrial adenocarcinoma grown in non-oophorectomized nude mice for one year were randomly selected to grow during a preparation phase of 4 weeks either in oophorectomiz

Influence of fadA(G203R) and Delta flba mutations on morphology and physiology of submerged Aspergillus nidulans cultures

Morphologic and physiologic changes taking place in carbon-limited submerged cultures of Aspergillus nidulans DeltaflbA and fadA(G203R) strains were studied. Loss-of-function mutation of the flbA gene resulted in an altered germination with unusually thick germination tubes, "fluffy" pellet morphology, as well as a reduced fragmentation rate of hyphae during autolysis. In the fadA(G203R) mutant st

Size of environmental grain and resource matching

For most animals their foraging environment consists of a patch network. In random environments there are no spatial autocorrelation at all, while in fine-grained systems positive autocorrelations flip to negative ones and back again against distance. With increasing grain size the turnover rate of spatial autocorrelation slows down. Using a cellular automaton with foragers having limited informat

Development of a disease-specific quality of life questionnaire for children & adolescents with idiopathic thrombocytopenic purpura (ITP-QoL)

Quality of life (QoL) assessment in children with coagulation disorders is a relatively unstudied area. While hemophilia-specific questionnaires (such as Haemo-QoL) are available, no instrument for children with idiopathic thrombocytopenic purpura (ITP) has been validated yet. A disease-specific questionnaire for children with ITP was therefore developed (ITP-QoL) in three phases: (a) a preparator

Examining understanding, acceptance, and support for the biorefinery concept among EU policy-makers

This paper outlines how an understanding of the processes of building cognitive and sociopolitical legitimacy is relevant to the formation of a biorefining sector. First we describe a number of theoretical insights into challenges faced by emerging industries and how these can relate to the formation of a biorefining sector. Second, we present the conduct and results of an initial exploration of u

Somatostatin, misoprostol and galanin inhibit gastrin- and PACAP-stimulated secretion of histamine and pancreastatin from ECL cells by blocking specific Ca(2+) channels.

The oxyntic mucosa is rich in ECL cells. They secrete histamine and chromogranin A-derived peptides, such as pancreastatin, in response to gastrin and pituitary adenylate cyclase-activating peptide (PACAP). Secretion is initiated by Ca2+ entry. While gastrin stimulates secretion by opening L-type and N-type Ca2+ channels, PACAP stimulates secretion by activating L-type and receptor-operated Ca2+ c

Individually adapted lightweight walking aids with moulded handles for patients with severely deforming chronic arthritis

Patients with severely deforming rheumatoid arthritis and impaired function of the upper extremity are often unable to use conventional walking aids. This report describes 42 such patients who were equipped with altogether 75 individually manufactured, lightweight walking aids (12 crutches, 12 forearm-crutches, 39 crutch-sticks and 12 sticks). A plaster cast of the patient's grip as well as analys

Role of Electronic Curve Crossing of Benzene S-1 State in the Photodissociation of Aryl Halides, Effect of Fluorination: RASSI-SO MS-CASPT2 Study

An ab initio study of the role of electronic curve crossing of benzene S-1 state in the photo dissociation dynamics of the iodobenzene and effect of fluorination is presented. Two dissociative life times observed in iodobenzene is attributed to the coupled repulsive potential energy curves of the low-lying n-sigma*, pi-sigma*, pi-pi* states. The direct channel is attributed to the alkyl like trans

Spatiotemporal aspects of silica buffering in restored tidal marshes

Losses of pelagic diatom production resulting from silica limitation have not only been blamed for toxic algal blooms, but for the reduction in ability of coastal food webs to support higher trophic levels. Recent research has shown the importance of advective seepage water fluxes of dissolved silica (DSi) from freshwater marshes to pelagic waters during moments of riverine Si-limitation. In this

Functional markers of selenium status: UK Food Standards Agency workshop report

The workshop was organised to discuss the validity and limitations of existing functional markers of Se status in human subjects and to identify future research priorities in this area. Studies presented as part of this workshop investigated: the bioavailability of Se from different dietary sources; potential functional markers of Se status; individual variation in response to Se; the effect of ma

Doing ambivalence: Embracing policy innovation - At arm's length

This article considers the social organization of responses among human service staff to changes in public policy, using a study of a Swedish treatment center for juveniles as an illustration. The stance toward a new treatment ideology, "family-work," was not one of either accepting or rejecting the new policy; the staff conveyed both embracing and distancing. Policy innovations, it is argued, cre

Fluid flow in compressible porous media: I: Steady-state conditions

This is the first of two articles dealing with fluid flow in compressible porous media. In this article a model describing fluid flow and pressure-induced variations in porosity under stationary conditions is developed. In a forthcoming article the dynamic behavior during filtration and wet pressing of compressible porous media are presented. Fluid flow through rigid porous media is generally desc

The period of hypotension following orthostatic challenge is prolonged in dementia with Lewy bodies.

OBJECTIVES: To determine whether orthostatic hypotension (OH) is more common in patients with dementia than in older people without cognitive impairment and to identify key differences in the profile of the orthostatic response and the pulse drive during orthostatic challenge between Alzheimer's disease (AD) and dementia with Lewy bodies (DLB). METHODS: The orthostatic response was evaluated in 23

Pharmacokinetics and splenic accumulation of N-acetylamino-3-chloro-N-(2-diethylamino-ethyl) benzamide after a single administration to rats.

The purpose of this study was to measure the pharmacokinetics and tissue accumulation of N-acetylamino-3-chloro-N-(2-diethylamino-ethyl) benzamide (NACPA) after oral or intravenous administration at a single dose of 25 mg/kg to female W/Fu rats. The serum pharmacokinetics of NACPA were characterized by rapid absorption, distribution and elimination. However, in comparison with its parent compound,

Annoyance and performance during the experimental chemical challenge of subjects with multiple chemical sensitivity.

OBJECTIVES: This study explored the subjective reactions and psychological test performance of smell-intolerant subjects during consecutive challenges to chemicals with contrasting neurotoxic properties. METHODS: Women with symptoms compatible with multiple chemical sensitivity (N=10) and healthy referents (N=20) were individually challenged in an exposure chamber. All the subjects attended two se

Primary production of Inner Mongolia, China, between 1982 and 1999 estimated by a satellite data-driven light use efficiency model

Declining biological production as a part of an ongoing land degradation process is considered a severe environmental problem in the dry northern and northwestern regions of China. The aim of this study is to develop and adapt a satellite data-driven gross primary production model called Lund University light use efficiency model (LULUE) to temperate conditions in order to map gross primary produc

Projective linear groups as maximal symmetry groups

A maximal symmetry group is a group of isomorphisms of a three-dimensional hyperbolic manifold of maximal order in relation to the volume of the manifold. In this paper we determine all maximal symmetry groups of the types PSL(2, q) and PGL(2, q). Depending on the prime p there are one or two such groups with q=pk and k always equals 1, 2 or 4.

Separation of lactic acid-producing bacteria from fermentation broth using a ceramic microfiltration membrane with constant permeate flow

The influence of several operating parameters on the critical flux in the separation of lactic acid-producing bacteria from fermentation broth was studied using a ceramic microfiltration membrane equipped with a permeate pump. The operating parameters studied were crossflow velocity over the membrane, bacterial cell concentration, protein concentration, and pH. The influence of the isoelectric poi