We applied newly developed methods for modelling the distribution

We applied newly developed methods for modelling the distribution of invasive species to the invasive shrub Rhododendron ponticum-a foliar reservoir host for the Phytophthora oomycete plant pathogens, P. ramorum and P. kernoviae, that threaten woodland and heathland habitat in Scotland. We compiled eleven datasets of biological records for R. ponticum (1,691 points, 8,455 polygons) and developed Maximum Entropy (MaxEnt) models incorporating landscape, soil and climate predictors. Our models produced accurate predictions of current suitable R. ponticum habitat (training AUC = 0.838; test AUC = 0.838) that corresponded Citarinostat mw well with population performance

(areal cover). Continuous broad-leaved woodland cover, low elevation (< 400 m a.s.l.) and intermediate levels of soil moisture (or Enhanced Vegetation Index) favoured presence of R. ponticum. The high coincidence of suitable habitat with both core native woodlands (54 % of woodlands) and plantations of another sporulation host, Larix kaempferi (64 % of plantations) suggests a high potential HIF pathway for spread of Phytophthora infection to woodland mediated by R. ponticum. Incorporating non-equilibrium modelling methods did not improve habitat suitability predictions of this invasive host, possibly because, as a long-standing invader, R. ponticum has filled more of its available habitat at this national scale than previously suspected.”
“P>The

physiological and behavioural responses of early life phases in

American Atlantic sturgeon (Acipenser oxyrinchus) towards sand and gravel substrate were examined during the first 15 days post-hatch. The free embryos were reared in circular tanks with approximately 30% of the bottom surface covered with either coarse gravel or sand. A group reared in tanks without additional substrate served as a control. Diurnal 4 differences in activity patterns were observed. Substrate use by the free embryos revealed significant differences during the first 5 days post-hatch, being higher in the gravel group than in the sand group. The results in size of the free embryos revealed significant differences, with the gravel group showing the lowest total length and wet mass until the onset of exogenous feeding – although dry mass and energy contents were highest. In contrast, length and wet mass during yolk sac absorption were highest in the control Etomoxir chemical structure group, but energy content at onset of exogenous feeding was 14% lower compared to the gravel group. The onset of exogenous feeding in the gravel group had a 1-day delay when compared to the two other treatments. On day 14, following the successful establishment of exogenous feed uptake, the specific growth rate in wet mass (SGR) for the gravel group (0.250 +/- 0.088) exceeded those of the two other treatments (sand 0.132 +/- 0.038 and control 0.095 +/- 0.020) significantly (Dunn’s n = 10 and n = 5, P < 0.05), indicating a compensational growth pattern.

The effect of missense mutations was assessed using in

The effect of missense mutations was assessed using in U0126 chemical structure silico predictions and protein modeling. Risk effects of common genetic variants were estimated by logistic regression analysis and gene-based haplotype association analysis.\n\nResults: We observed seven missense mutations in eight patients (1.3%). Convincing pathogenic evidence was obtained for two missense mutations, p. Cys139Arg and p. Pro451Leu, affecting PGRN protein folding and leading to loss of PGRN by degradation of the misfolded protein. In addition, we showed that PGRN haplotypes were associated with increased risk for AD.\n\nConclusions: Our data support a role for PGRN in patients with clinically diagnosed Alzheimer disease (AD).

Further, we hypothesize that at least some PGRN missense

mutations might lead to loss of functional protein. Whether the underlying pathology in our cases proves to be AD, frontotemporal lobar degeneration, or a combination of the two must await further investigations.”
“Potentially mutagenic impurities in new pharmaceuticals are controlled to levels with negligible risk, the TTC (threshold of toxicological concern, 1.5 mu g/day for a lifetime). The TTC was based on the more potent rodent carcinogens, excluding 17DMAG chemical structure the highly potent “cohort of concern” (COC; for mutagenic carcinogens these are N-nitroso, Aflatoxin-like, and azoxy structures). We compared molecules with DEREK “structural www.selleckchem.com/products/ch5183284-debio-1347.html alerts” for mutagenicity used in drug syntheses with the mutagenic carcinogens in the Gold Carcinogenicity Potency Database. Data from 108 diverse synthetic routes from 13 companies confirm that many “alerting” or mutagenic chemicals are in structural classes with lower carcinogenic potency than those used to derive the TTC. Acceptable daily intakes can be established that are higher than the default TTC for many structural classes (e.g., mono-functional alkyl halides and certain aromatic amines). Examples of ADIs for lifetime and shorter-term exposure are given for chemicals of various potencies. The percentage

of chemicals with DEREK alerts that proved mutagenic in the Ames test ranged from 36% to 83%, depending on structural class, demonstrating that such SAR analysis to “flag” potential mutagens is conservative. We also note that aromatic azoxy compounds need not be classed as COC, which was based on alkyl azoxy chemicals. (C) 2013 Elsevier Inc. All rights reserved.”
“Sea ice can contain high concentrations of dissolved organic carbon (DOC), much of which is carbohydrate-rich extracellular polymeric substances (EPS) produced by microalgae and bacteria inhabiting the ice. Here we report the concentrations of dissolved carbohydrates (dCHO) and dissolved EPS (dEPS) in relation to algal standing stock [estimated by chlorophyll (Chl) a concentrations] in sea ice from six locations in the Southern and Arctic 3 Oceans.

During the last 2 years we have faced a similar dramatic revoluti

During the last 2 years we have faced a similar dramatic revolution with AZD2014 in vitro the introduction of next generation sequencing (NGS). These techniques allow sequencing of the complete human exome or whole genome with a cost reduction in the order of 10,000-100,000 fold. Consequently, the number of known cancer genome sequences exploded with more than

6,000 samples, published between 2011 and 2013. These studies have led to important and surprising discoveries both for basic cancer research and clinical applications. They relate to understanding the development of cancer as well as the heterogeneity of the disease, and how to use this information to guide the development and application of therapies. Although

it is foreseeable that the sequencing surveys of neoplasms will soon conclude, their introduction into clinical practice is just beginning.”
“Objective. To determine the effect of age and study period on coronary heart disease (CHD) risk 123 attributable to cardiovascular risk factors\n\nMethods. G418 research buy A cohort of cardiovascular disease (CVD)-free randomly participants from Girona (spain) aged 35-74 years recurited in 1995 and 2000 and followed for an average of 6.9 years. A survey conducted in the same area in 2005 was also used for the analysis. Smoking, hypertension, diabetes, sedentary lifestyle. obesity, total cholesterol >= 240 mg/gl, low-density lipoprotein (LDL) cholesterol >= 160 mg/dl, and high-density lipoprotein cholesterol <40 mg/dl were the high risk factors considered. The composite end-point included myocardial infarction, angiona pectoris, and CHD death.\n\nResults. ACY-738 LDL cholesterol had the highest potential for CHD prevention between 35 and 74 years [42% (95% Confidence Interval : 23,58)]. The age-stratified analysis showed that the population attributable

risk (PAF) for smoking was 64% (30,80) in subjects <55 years; for those >= 55 years, the PAF for hypertension was 34% (1,61). The decrease observed between 1995 and 2005 in the population’s means LDL cholesterol level reduced that PAF in all age groups.\n\nConclusion. Overall, LDL chloresterol levels had the highest potential for CHD prevention. Periodic PAF reacalculation in different age groups may be required to adequately monitor population trends. (C) 2010 Published by Elsevier Inc.”
“The present research was carried out to study the trophic relationship between aphids and their primary parasitoids in Pothwar, Pakistan during 2009-2010 in the districts of Rawalpindi, Attock, Chakwal, and Jhelum. Ten species of aphids were recorded from 17 host plants. The aphids were parasitized by 11 species of primary parasitoids. Five quantitative aphid-parasitoid food webs were constructed describing the trophic relationships between the community of aphids and their primary parasitoids.

Cyclosporine or tacrolimus were reintroduction in two patients af

Cyclosporine or tacrolimus were reintroduction in two patients after complete clinical and laboratory recovery. Both patients developed recurrence of HUS. While the former did not the latter did recover on further treatment of HUS.\n\nConclusion. Anemia, thrombocytopenia, elevated LDH and FDP are the most frequent manifestations of HUS. Early CNI elimination and fresh plasma transfusion can revert CNI induced HUS and save the graft. Reintroduction of CNI selleck chemical may be deleterious to the graft and should be avoided.”
“Objectives: Pre-eclampsia affects approximately 5-8% of pregnant women. The aim of

this study was to compare the serum level of Lactate dehydrogenase (LDH), Homocystein, Hemoglubin and platelet AZD2014 solubility dmso in pregnant women diagnosed as pre-eclampsia and a normal group in Gorgan city, Northeastern Iran from 2007-2008.\n\nMethodology: In this case control study, 50 cases of pre-eclampsia were compared with the

control group women hospitalized in Dezyani hospital. Pre-eclampsia criteria were: Blood pressure more than or equal to 140/ 90 mm hg and Proteinuria greater or equal to 300 mg/ 24 hours urine sample in the third trimester. Hemoglobin, platelet, LDH and hemocystein were measured. Data were analyzed by the mean of SPSS-14 program & Chi-2 or t-student were used.\n\nResults: The difference of BMI and family incomes was significant between two groups (P-value<0.01). LDH level was not statistically different between healthy and pre-eclamptic individuals. Six cases (12%) in controls and 9 cases (18%) in pre-eclamptic group had thrombocytopenia (P-value>0.01). Hemocystein level was more than normal range

in five patients with pre-eclampsia (P-value<0.001).\n\nConclusions: In this study, hemocystein level was significantly GW3965 research buy higher in pre-eclampsia patients but LDH, hemoglobin and platelet level had no significant difference.”
“A variety of techniques have been used to determine intra-operative leg length during total hip arthroplasty. One method often described is using the tip of greater 123 trochanter as the reference for the rotation centre of the femoral head to align the femoral component. There is little in the literature to support this method of leg length restoration.\n\nWe analysed standard anterior-posterior pelvic radiographs of 225 patients with osteoarthritis of the hip who were about to undergo total hip arthroplasty. The distance between the tip of the greater trochanter and the rotation centre of the femoral head was measured for the affected hip.\n\nThe average location of the tip of greater trochanter is 3.4 mm proximal to the centre of the femoral head, with a range from 20 mm proximal to 10 nun distal to the femoral head centre.

OP hypertensive animals had significantly

OP hypertensive animals had significantly QNZ reduced Fos-like immunoreactivity in the nucleus of the soliltary tract and the caudal ventrolateral medulla in response to CCK when compared to controls and/or OR animals, indicative of impaired signalling pathways in

the brainstem within the reflex circuit between vagal afferents and presympathetic RVLM neurons. Blunted sympathoinhibitory 123 responses in obesity-related hypertension are associated with blunted responses in RVLM neurons as a result of aberrant central but not peripheral signalling mechanisms. The gut hormone cholecystokinin (CCK) acts at subdiaphragmatic vagal afferents to induce renal and splanchnic sympathoinhibition and vasodilatation, via reflex inhibition of a subclass of cardiovascular-controlling neurons in the rostroventrolateral medulla (RVLM). These sympathoinhibitory and vasodilator responses are blunted in obese, hypertensive rats and our aim in the present study was to determine whether this is attributable to (i) altered sensitivity of presympathetic vasomotor RVLM neurons, and (ii) aberrant peripheral or central signalling mechanisms. Using a diet-induced obesity model, male Sprague-Dawley rats exhibited either an obesity-prone (OP) or obesity-resistant Epigenetics inhibitor (OR) phenotype when placed

on a medium high fat diet for 13-15weeks; control animals were placed on a low fat diet. OP animals had elevated resting arterial pressure compared to OR/control animals (P smaller than 0.05). Barosensitivity of RVLM neurons was significantly attenuated in OP animals (P smaller than 0.05), suggesting altered baroreflex gain. CCK induced inhibitory responses in RVLM neurons of OR/control animals but not OP animals. Subdiaphragmatic vagal nerve responsiveness to CCK and CCK1 receptor mRNA expression in nodose ganglia did not differ between the groups, but CCK induced significantly less Fos-like buy MEK162 immunoreactivity in both the nucleus of the solitary tract and the caudal ventrolateral medulla of OP animals compared

to controls (P smaller than 0.05). These results suggest that blunted sympathoinhibitory and vasodilator responses in obesity-related hypertension are due to alterations in RVLM neuronal responses, resulting from aberrant central but not peripheral signalling mechanisms. In obesity, blunted sympathoinhibitory mechanisms may lead to increased regional vascular resistance and contribute to the development of hypertension.”
“Background: Anaphylaxis is a potentially life-threatening allergic reaction that may require emergency medical system (EMS) transport. Fatal anaphylaxis is associated with delayed epinephrine administration. Patient outcome data to assess appropriateness of EMS epinephrine administration are sparse.

It is associated with minimal complications and a good outcome “<

It is associated with minimal complications and a good outcome.”
“The discovery of kisspeptin as key central regulator of GnRH secretion has led to a new level of understanding of the neuroendocrine regulation of human reproduction. The related discovery of the kisspeptin-neurokinin B-dynorphin (KNDy) pathway in the last decade has further strengthened our understanding of the modulation of GnRH secretion by endocrine, metabolic and environmental inputs. In this review, EVP4593 we summarize current understanding of the physiological roles of these novel neuropeptides, and discuss the clinical relevance

of these discoveries and their potential translational applications. A systematic literature search was performed using PUBMED for all English language articles up to January 2014. In addition, learn more the reference lists of all relevant original research articles and reviews were examined. This review focuses mainly on published human studies but also draws on relevant animal data. Kisspeptin is a principal regulator of the secretion of gonadotrophins, and through this key role it is critical for the onset of puberty, the regulation of sex steroid-mediated feedback and the control of adult fertility. Although there is some sexual dimorphism, both neuroanatomically and functionally,

these functions are apparent in both men and women. Kisspeptin acts upstream of GnRH and, following paracrine stimulatory and inhibitory inputs from neurokinin B and dynorphin (KNDy neuropeptides), signals directly to GnRH neurones to control pulsatile GnRH release. When administered to humans in different isoforms, routes and doses, kisspeptin robustly stimulates LH secretion and LH pulse frequency. Manipulation LY333531 of the KNDy system is currently the focus of translational research with the possibility of future clinical application to regulate LH pulsatility, increasing gonadal sex steroid secretion in reproductive disorders characterized by decreased LH pulsatility, including hypothalamic amenorrhoea and hypogonadotropic hypogonadism. Conversely

there may be scope to reduce the activity of the KNDy system to reduce LH secretion where hypersecretion of LH adds to the phenotype, such as in polycystic ovary syndrome. Kisspeptin is a recently discovered neuromodulator that controls GnRH secretion mediating endocrine and metabolic inputs to the regulation of human reproduction. Manipulation of kisspeptin signalling has the potential for novel therapies in patients with pathologically low or high LH pulsatility.”
“Background. The lack of pathognomonic findings and the chance of complicated disease have resulted in the widespread use of additional imaging to diagnose acute colonic diverticulitis (ACD). The added value of additional imaging in the diagnostic workup of patients suspected of ACD is not well defined. Aims.

Levodopa alone resulted in marked dyskinesia induction but little

Levodopa alone resulted in marked dyskinesia induction but little or no dyskinesia resulted from the administration of pramipexole. From clay 36, some animals were treated with a combination of levodopa (3.125-6.25 mg/kg plus carbidopa 12.5 mg/kg p.o. Tubastatin A inhibitor BID) and pramipexole (0.1-0.2 mg/kg p.o. SID).

This improved motor disability to a greater extent than occurred with levodopa alone. Importantly, while dyskinesia was greater than that produced by pramipexole alone, the combination resulted in less intense dyskinesia than produced by levodopa alone. These results suggest that pramipexole could be administered with a reduced dose of levodopa to minimize dyskinesia in Parkinson’s disease while maintaining therapeutic efficacy. (C) 2010 Movement Disorder Society”
“Objective: To characterize downstream effectors of p300 acetyltransferase in the myocardium. Background: Acetyltransferase p300 is a central driver of the hypertrophic response to increased workload, but its biological targets and downstream effectors are incompletely known.\n\nMethods and Results: Mice expressing a myocyte-restricted transgene encoding acetyltransferase p300, previously

shown to develop spontaneous hypertrophy, were observed to undergo robust compensatory blood vessel growth together with increased angiogenic gene expression. Chromatin immunoprecipitation demonstrated binding of p300 to the enhancers of the angiogenic regulators Angpt1 and Egln3. GDC-0973 in vivo MK5108 clinical trial Interestingly, p300 overexpression in vivo was also associated with relative upregulation of several members of the anti-angiogenic

miR-17 similar to 92 cluster in vivo. Confirming this finding, both miR-17-3p and miR-20a were upregulated in neonatal rat ventricular myocytes following adenoviral transduction of p300. Relative expression of most members of the 17,92 cluster was similar in all 4 cardiac chambers and in other organs, however, 432 significant downregulation of miR-17-3p and miR-20a occurred between 1 and 8 months of age in both wt and tg mice. The decline in expression of these microRNAs was associated with increased expression of VEGFA, a validated miR-20a target. In addition, miR-20a was demonstrated to directly repress p300 expression through a consensus binding site in the p300 3′UTR. In vivo transduction of p300 resulted in repression both of p300 and of p300-induced angiogenic transcripts.\n\nConclusion: p300 drives an angiogenic transcription program during hypertrophy that is fine-tuned in part through direct repression of p300 by miR-20a.”
“Post-translational histone modifications play key roles in gene regulation, development, and differentiation, but their dynamics in living organisms remain almost completely unknown. To address this problem, we developed a genetically encoded system for tracking histone modifications by generating fluorescent modification-specific intracellular antibodies (mintbodies) that can be expressed in vivo.

Results of national and international registries will bring valuable epidemiological and prognostic perspectives to pediatric PAH.

(Anadolu Kardiyol Derg 2010; 10: Suppl 1; 50-6)”
“Research into genome assembly algorithms has experienced a resurgence due to new challenges created by the development of next generation sequencing technologies. Several genome assemblers have been published in recent years specifically targeted at the new sequence data; however, the ever-changing technological landscape leads to the need for continued research. In addition, the low cost of next generation sequencing data has led to an increased use of sequencing in new settings. For example, the new field of metagenomics relies on large-scale sequencing of entire microbial communities instead of isolate genomes, leading to new computational

Dinaciclib inhibitor challenges. In this article, we outline the major algorithmic approaches for genome assembly and describe recent developments in this domain.”
“Tobacco use, alcohol abuse, overweight and obesity are risk factors for numerous diseases in Italy as elsewhere. However, children and adolescents are not usually included in official national surveys although it is at this stage of life when unhealthy habits are often established. Italian participation in HBSC and GYTS surveys allows VS-6063 molecular weight our country to implement standardized surveillance systems providing reliable information on tobacco- related

behaviors of this population. Data from three HBSC surveys (2002-2010) show that following the FK228 datasheet drop in the first half of the decade, prevalence of tobacco use stabilized in the second half. The decline was significant for younger age groups, while prevalence of regular tobacco use remained stable among 15-year-olds. Many adolescents reported being exposed to secondhand smoke, to have at least one parent who smokes, and having seen teachers and students smoking at school. Although the sale of tobacco products to minors is prohibited, the vast majority had no trouble in buying cigarettes. Data from GYTS and HBSC surveys provide a wealth of information about attitudes and behaviors of Italian adolescents with respect to smoking. Despite some progress, sizeable gaps remain in meeting standard recommendations for discouraging smoking initiation and motivating adolescent smokers to quit the habit.”
“In recent years, the number of imported cases of arthropod-borne diseases in Europe, such as dengue fever, has increased 4 steadily, as did the emergence and distribution of invasive insect vectors. Consequently, the risk of disease spreading into previously unaffected regions through invasive mosquitoes is also increasing. One example of an invasive mosquito is Aedes japonicus japonicus (A. j. japonicus), which spread from its original habitat in Japan to North America and Europe.

The significant movement away from rural areas for postobligation

The significant movement away from rural areas for postobligation employment, however, highlights the long-term need to continue state efforts to recruit physicians to these areas. Acad Med. 2010; 85: 614-621.”
“Background: Transmission of human pathogens can be occurred via inert objects. Paper currency is a further common contact surface whereby pathogens can be transferred within a population although the significance remains unknown. Hence, the

aim of the present study was to investigate microbial populations associated with Iranian paper currency.\n\nMethods: This study was carried out by getting 108 samples of the Iranian currency notes (1000, 2000, 5000, 10000, 20000 and 50000 RIALS) from food-related shops that included food service outlets, greengrocery, supermarket, bakery, confectionary and poultry meat retail outlets. All currency notes were examined for total bacterial Temsirolimus cell line count and identification of pathogenic bacteria.\n\nResults: The average total bacterial count that was recovered from currency notes was found to be 3.27 +/- 0.31 colony forming unites. 2000R had the highest total bacterial count, followed by 5000R, 10000R and the lowest in 50000R. In this study, the isolated

bacteria recovered were Bacillus cereus (8.33%), E. coli (48.14%), Staphylococcus aureus (28.7%), Salmonella (0.92%), Listeria monocytogenes (0.92%), Yersinia entrocolitica (6.48%). It was revealed Sapanisertib molecular weight that all the pathogens screened for where encountered on currency notes were recovered from one sample. There were no significant (P>0.05) correlations between the carriage of pathogens/fecal

indicator bacteria and currency note condition.\n\nConclusion: Our findings demonstrate that Iranian currency notes represent a significant vehicle for human pathogens.”
“Carotenoid-based ornaments (many yellow-orange-red colourations) may signal the genetic or parental quality of the bearer. Thus, their expression could influence the amount of resources/energy that the mate will invest in the production of offspring, thereby optimising its reproductive fitness. The differential allocation hypothesis (DAH) predicts that females mated with more attractive males should lay more and VX-680 better eggs. This has been explored only in few bird species with carotenoid-based traits. We tested this hypothesis in the red-legged partridge (Alectoris rufa), a gallinacean with very variable laying capacity. Both sexes display carotenoid-based ornamentation that gradually fades throughout the laying period. Here, the redness of beak and eye rings of captive males was intensified after mating by means of paint. The proportion of females that laid eggs did not differ between treatments. Amongst laying females, those mated with colour-enhanced males (experimental females) tended to lay earlier and produced significantly more eggs than controls, but of similar quality (egg mass and composition).

vaginalis to adapt and survive in diverse environment Based on r

vaginalis to adapt and survive in 432 diverse environment. Based on recent developments in the field, we review T. vaginalis structure, patho-mechanisms, parasitic virulence, and advances in diagnosis and therapeutics. (C) 2011 Elsevier Ireland Ltd. All rights reserved.”
“Transcriptomics analysis revealed that genes

involved in hepatic de novo cholesterol synthesis were downregulated in fed HSL-null mice that had been on a high-fat diet (HFD) for 6 mo. This DAPT nmr finding prompted a further analysis of cholesterol metabolism in HSL-null mice, which was performed in fed and 16-h-fasted mice on a normal chow diet (ND) or HFD regimen. Plasma cholesterol was elevated in HSL-null mice, in all tested conditions, as a result of cholesterol enrichment of HDL and VLDL. Hepatic esterified cholesterol content and ATP-binding cassette transporter A1 (ABCA1) mRNA and protein levels were increased in HSL-null mice regardless of the dietary regimen. CHIR-99021 in vivo Unsaturated fatty acid composition of hepatic triglycerides was modified in fasted HSL-null mice on ND and HFD. The increased ABCA1 expression had no major effect on cholesterol efflux from HSL-null mouse hepatocytes. Taken together, the results of this study suggest that HSL plays a critical

role in the hydrolysis of cytosolic cholesteryl esters and that increased levels of hepatic cholesteryl esters, due to lack of action of HSL in the liver, are the main mechanism underlying the imbalance in cholesterol metabolism in HSL-null mice.”
“Herpes simplex virus (HSV)-2 shedding is associated with increased risk for sexually acquiring HIV. Because Langerhans cells (LCs), the mucosal epithelium resident dendritic cells, are suspected this website to be one of the initial target cell types infected by HIV following sexual exposure, we examined whether and how HSV-2 affects HIV infection of LCs. Although relatively few HSV-2/HIV-coinfected LCs were detected, HSV-2 dramatically enhanced the HIV susceptibility of LCs within skin explants. HSV-2

stimulated epithelial cell production of antimicrobial peptides (AMPs), including human beta defensins and LL-37. LL-37 strongly upregulated the expression of HIV receptors in monocyte-derived LCs (mLCs), thereby enhancing their HIV susceptibility. Culture supernatants of epithelial cells infected with HSV-2 enhanced HIV susceptibility in mLCs, and this effect was abrogated by blocking LL-37 production. These data suggest that HSV-2 enhances sexual transmission of HIV by increasing HIV susceptibility of LCs via epithelial cell production of LL-37.”
“Purpose: To assess the pharmacodynamic effects of nimotuzumab, an anti-epidermal growth factor receptor (EGFR) monoclonal antibody with intermediate affinity for the receptor, in skin and tumor tissues from head and neck cancer patients.