Head and Neck Diseases by Alexandros G.Sfakianakis: 01/19/16

Τρίτη 19 Ιανουαρίου 2016

Effects of a community-oriented obesity prevention programme on indicators of body fatness in preschool and primary school children: main results from the IDEFICS study

BACKGROUND/OBJECTIVES: Childhood obesity is a major public health concern but evidence-based approaches to tackle this epidemic sustainably are still lacking. The Identification and prevention of Dietary- and lifestyle-induced health EFfects In Children and infantS (IDEFICS) study investigated the aetiology of childhood obesity and developed a primary prevention programme. Here, we report on the effects of the IDEFICS intervention on indicators of body fatness. SUBJECTS/METHODS: The intervention modules addressed the community, school and parental level, focusing on diet, physical activity and stress-related lifestyle factors. A cohort of 16,228 children aged 2-9.9 years – about 2000 per country – was equally divided over intervention and control regions. (Participating countries were Sweden, Germany, Estonia, Hungary, Cyprus, Italy, Spain and Belgium.) We compared the prevalence of overweight/obesity and mean values of body mass index z-score, per cent body fat and waist-to-height ratio over 2 years of follow-up. Mixed models adjusting for age and socioeconomic status of the parents and with an additional random effect for country accounted for the clustered study design. RESULTS: The prevalence of overweight and obesity increased in both the intervention and control group from 18.0% at baseline to 22.9% at follow-up in the control group and from 19.0% to 23.6% in the intervention group. The difference in changes between control and intervention was not statistically significant. For the cohort as a whole, the changes in indicators of body fatness did not show any clinically relevant differences between the intervention and control groups. Changes in favour of intervention treatment in some indicators were counterbalanced by changes in favour of the control group in some other indicators. CONCLUSIONS: Over the 2-year-observation period, the IDEFICS primary prevention programme for childhood obesity has not been successful in reducing the prevalence of overweight and obesity nor in improving indicators of body fatness in the target population as a whole.

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Belgische VIP’s brengen ISA verder

Draagvlak creëren voor ISA. Dat was een belangrijke doelstelling van het organiseren van demonstratieritten met een ISA-auto voor belangrijke Belgen én van een ISA-proef in Gent. Ook aan de Gentse proef deden VIP's mee, zoals de Gentse burgemeester en de rector van de universiteit. Door deze aanpak kreeg ISA veel publiciteit en groeide de bekendheid. Een bericht uit de Belgische ISA-stad.

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A novel case presenting with an unusual ureteral diverticular lesion similar to adenomyomatous hyperplasia of the gallbladder

We present the first case of an unusual ureteral diverticular lesion demonstrating similarities to adenomyomatous hyperplasia of the gallbladder. A 68-year-old asymptomatic Japanese man with high prostate-specific antigen levels was clinically evaluated. Left hydronephrosis and benign prostatic hyperplasia were detected. A bilateral retrograde pyelogram revealed that the upper and middle portions of the left ureter exhibited an irregular narrow lumen and some pooling of contrast material, which was compatible with ureteral pseudodiverticulosis. Although no malignant cells were seen on cytology, computed tomography detected a fusiform shaped lesion with a circumferential thick wall including multiple diverticulae. Left nephroureterectomy was performed because malignancy could not be ruled out. Pathology demonstrated that the ureteral lesion showed a localized thick wall consisting of multilocules and/or multicysts and a hyperplastic muscularis propria. The cysts were mostly seen in the muscularis propria or a deeper site. The inner layers of the cysts were lined with normal urothelium, and some cysts opened onto the mucosal surface, indicating that they were derived from invaginated mucosal epithelium. We believe that this lesion may be a novel form of diverticular disorder demonstrating similarities to adenomyomatous hyperplasia of the gallbladder.

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miR-1, regulated by LMP1, suppresses tumour growth and metastasis by targeting K-ras in nasopharyngeal carcinoma

Summary

There is evidence to show that downregulation of miR-1 expression is closely related to cancer progression, including in nasopharyngeal carcinoma (NPC). However, the molecular mechanisms underlying miR-1 downregulation in NPC remain largely unknown, especially its association with Epstein–Barr virus (EBV). In this study we found that restoration of miR-1 dramatically inhibited cell invasion in vitro, together with tumour growth and metastasis in vivo. Importantly, we found that LMP1, an Epstein–Barr virus (EBV)-associated protein, suppressed miR-1 expression. Furthermore, we identified K-ras as a novel direct target of miR-1. Our results demonstrated for the first time that miR-1 was suppressed by LMP1 and its tumour-suppressive effects were mediated chiefly by repressing K-ras expression. We propose that miR-1 could serve as an independent biomarker to identify patients with different clinical characteristics.

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Reduced AMPKα2 protein expression restores glucose-induced insulin secretion in islets from calorie-restricted rats

Summary

In a state of caloric restriction (CR), improved insulin action was associated with the activation of AMP-activated kinase (AMPK). Here, we verified whether AMPK was involved in impaired β-cell function in islets from rats subjected to CR for 21 days.

Eight-week-old male rats were distributed into a control (CTL) group that was fed an isocaloric diet ad libitum or a CR group that received 60% of the food consumed by the CTL group. From days 18–21, CTL and CR rats were treated with sense (CTLS and CRS) or antisense (CTLAS and CRAS) AMPKα2 oligonucleotides.

Caloric restriction was associated with decreased body weight, perigonadal fat pads and insulinaemia, while higher glucose tolerance was observed in CRS rats. Antisense treatment normalized insulinaemia and glucose tolerance in CRAS rats and increased cholesterolaemia in CRAS and CTLAS groups. These effects were associated with reduced pAMPK/AMPK protein expression in the liver of rats treated with antisense oligonucleotides. Additionally, CRS islets showed higher pAMPK/AMPK content and lower glucose-induced insulin release. As expected, antisense oligonucleotides against AMPKα2 efficiently reduced pAMPK/AMPK protein in CRAS and CTLAS islets. The lower AMPK content in CRAS islets normalized the insulin secretion in islets exposed to 16.7 mM glucose. In addition, CTLAS islets presented higher insulin secretion at 2.8 and 16.7 mM glucose. These findings support the hypothesis that higher AMPK protein expression is involved in impaired β-cell function in islets from rats subjected to CR for 21 days.

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Characterization of lesion formation in marmosets following inhalational challenge with different strains of Burkholderia pseudomallei

Summary

The marmoset model of melioidosis was used to explore whether there was any difference in the disease presentation and/or the lesion formation following inhalational challenge with one of four strains of Burkholderia pseudomallei (K96243, 1026b, HBPUB10303a and HBPUB10134a). Marmosets were challenged with a range of bacterial doses and bacterial load, histological and physiological features were determined temporally following lethal disease. Melioidosis presented as an acute, febrile disease with bacteraemia, bacterial dissemination, necrotizing hepatitis, splenitis and pneumonia which was independent of the challenge strain. Generally, there were no major differences in the manifestation of melioidosis following challenge by the different strains of B. pseudomallei; however, there were some differences in the time to death and the severity of the pathological features. The pathological features observed in the liver and spleen of animals challenged with B. pseudomallei strain 1026b were statistically less severe (P < 0.05) and less frequent. However, more severe foci of disease were evident in the lungs of animals challenged with strain 1026b. In all cases, the lesions developed from small areas of bacteria-infected macrophages surrounded by non-infected neutrophils into large lesions with both immune cell types infected. The marmoset model was a useful tool enabling the distinction of subtle difference in the pathological response to B. pseudomallei.

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Multiple pathways regulate Cten in colorectal cancer without a Tensin switch

Summary

CTEN/TNS4 is a member of the Tensin gene family. It localizes to focal adhesions and induces cell motility. The mechanisms regulating Cten expression are unclear although we have shown regulation by Kras in the colon and pancreas. In normal mammary cell lines, it is reportedly upregulated by epidermal growth factor receptor (EGFR) and STAT3 signalling and upregulation is accompanied by downregulation of Tensin 3 (Tensin switch). In this study, we investigated the roles of EGFR and STAT3 signalling in the regulation of Cten in colorectal cancer (CRC). In addition, we investigated calpain – a regulator of focal adhesion-associated proteins whose relevance to Cten has not been investigated. CRC cell lines were stimulated with epidermal growth factor (EGF). This resulted in an increase in Cten and Tensin 3 protein. Kras was knocked down and this resulted in downregulation of Cten and Tensin 3. We next investigated the role of STAT3 signalling. Activation and knockdown of STAT3 resulted in downregulation and upregulation, respectively, of Cten. Inhibition of calpain resulted in upregulation of both Cten and Tensin 3. As the regulators of Cten also seemed to regulate Tensin 3, we tested the interaction between Cten and Tensin 3. Cten was forcibly expressed or knocked down resulting, respectively, in upregulation and downregulation of Tensin 3. We conclude that in CRC, Cten is upregulated by EGFR and Kras but downregulated by STAT3. We show that calpain may be a negative regulator of Cten and that a Tensin switch does not occur and, if anything, Cten stabilizes Tensin 3.

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Treatment with Mesna and n-3 polyunsaturated fatty acids ameliorates experimental ulcerative colitis in rats

Summary

Oxidative damage is a central feature of ulcerative colitis. Here, we tested whether the antioxidant Mesna, when administered alone or in combination with n-3 polyunsaturated fatty acids (n-3 PUFAs), affects the outcome of dextran sodium sulphate (DSS)-induced ulcerative colitis in rats. After the induction of colitis, DSS-treated rats were further treated orally (p.o), intraperitoneally (i.p) or intrarectally (i.r) for either 7 or 14 days with Mesna, n-3 PUFAs or both. Rats were euthanized at the end of each treatment period. Clinical disease activity index was recorded throughout the experiment. At necropsy colorectal gross lesions were scored. Colitis was scored histologically, and the expression of myeloperoxidase (MPO), caspase-3, inducible nitric oxide synthase (iNOS) and nuclear factor κB (NF-κΒ) in colonic tissue was assessed by immunohistochemistry. Mesna alone was sufficient to significantly reduce colorectal tissue damage when administered orally or intraperitoneally. Orally coadministered n-3 PUFAs enhanced this effect, resulting in the significant suppression of DSS colitis after 7 days, and a remarkable recovery of colorectal mucosa was evident after 14 days of treatment. The amelioration of colon pathology co-existed with a significant decrease in MPO expression, overexpression of iNOS and reduction of nuclear NF-κB p65 in inflammatory cells, and the suppression of apoptosis in colonic epithelial cells. The simultaneous administration of Mesna and n-3 PUFAs is particularly effective in ameliorating DSS colitis in rats, by reducing oxidative stress, inflammation and apoptosis, probably through a mechanism that involves the inhibition of NF-κB and overexpression of iNOS.

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Recombinant human brain natriuretic peptide attenuates trauma-/haemorrhagic shock-induced acute lung injury through inhibiting oxidative stress and the NF-κB-dependent inflammatory/MMP-9 pathway

Summary

Acute lung injury (ALI) is one of the most serious complications in traumatic patients and is an important part of multiple organ dysfunction syndrome (MODS). Recombinant human brain natriuretic peptide (rhBNP) is a peptide with a wide range of biological activity. In this study, we investigated local changes in oxidative stress and the NF-κB-dependent matrix metalloproteinase-9 (MMP-9) pathway in rats with trauma/haemorrhagic shock (TH/S)-induced ALI and evaluated the effects of pretreatment with rhBNP. Forty-eight rats were randomly divided into four groups: sham operation group, model group, low-dosage rhBNP group and high-dosage rhBNP group (n = 12 for each group). Oxidative stress and MPO activity were measured by ELISA kits. MMP-9 activity was detected by zymography analysis. NF-κB activity was determined using Western blot assay. With rhBNP pretreatment, TH/S-induced protein leakage, increased MPO activity, lipid peroxidation and metalloproteinase (MMP)-9 activity were inhibited. Activation of antioxidative enzymes was reversed. The phosphorylation of NF-κB and the degradation of its inhibitor IκB were suppressed. The results suggested that the protection mechanism of rhBNP is possibly mediated through upregulation of anti-oxidative enzymes and inhibition of NF-κB activation. More studies are needed to further evaluate whether rhBNP is a suitable candidate as an effective inhaling drug to reduce the incidence of TH/S-induced ALI.

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Increased thyroid hormone activation accompanies the formation of thyroid hormone dependent negative feedback in developing chicken hypothalamus

Endocrinology, Early Release.

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Cadmium induces mucin 8 expression via Toll-like receptor 4–mediated extracellular signal related kinase 1/2 and p38 mitogen-activated protein kinase in human airway epithelial cells

Background

Inhalation of cadmium can lead to development of inflammatory airway diseases such as acute pulmonary edema and chronic obstructive pulmonary disease. In inflammatory airway diseases, expression of mucins is increased, which leads to increased morbidity and mortality of the affected patients. However, no study on the effect of cadmium on expression of mucin genes in airway epithelial cells has been reported. Therefore, this study was conducted in order to investigate the effect and the brief signaling pathway of cadmium on expression of mucin genes in human airway epithelial cells.

Methods

In mucin-producing human NCI-H292 airway epithelial cells and primary cultures of normal nasal epithelial cells, the effect and signaling pathway of cadmium on expression of mucin genes were investigated using reverse transcription–polymerase chain reaction (RT-PCR), real-time PCR, enzyme immunoassay, and immunoblot analysis with several specific inhibitors and small interfering RNA (siRNA).

Results

Cadmium increased mucin 8 (MUC8) expression and Toll-like receptor (TLR) 4 messenger RNA (mRNA) expression. Cadmium significantly activated phosphorylation of extracellular signal related kinase 1/2 (ERK1/2) mitogen-activated protein kinase (MAPK) and p38 MAPK. ERK1/2 MAPK inhibitor, p38 MAPK inhibitor, TLR4 siRNA, ERK1/2 MAPK siRNA, and p38 MAPK siRNA significantly blocked cadmium-induced MUC8 mRNA expression. TLR4 siRNA significantly blocked cadmium-activated phosphorylation of ERK1/2 MAPK and p38 MAPK.

Conclusion

The results of this study suggest for the first time that cadmium induces MUC8 expression via TLR4-mediated ERK1/2 and p38 MAPK signaling pathway in human airway epithelial cells.

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Timing of endoscopic surgical decompression in traumatic optic neuropathy: a systematic review of the literature

Background

Traumatic optic neuropathy (TON) represents a rare but devastating complication of closed head injuries. No accepted guidelines are available for medical and surgical management algorithms. A systematic review of the literature was performed to determine the optimal timing and candidacy for endoscopic surgical intervention.

Methods

A systematic review of multiple databases was performed including Medline-Ovid, EMBASE, and PubMed. Data was extracted and patients stratified based on surgical delay from trauma (≤3 days, >3 days, ≤7 days, or >7 days) as well as preoperative and postoperative vision testing (no light perception [NLP]; light perception [LP]; hand motion [HM]; or finger counting [FC] or better).

Results

The literature review identified 24 studies meeting inclusion criteria. In the group of patients receiving surgery ≤3 days after the antecedent event, 57% (105/183) had visual improvement, whereas in the >7-days group 51% (145/283) of patients improved. In those with NLP preoperatively, 41% (172/411) saw improvement, whereas those with LP (89%), HM (93%), or FC (85%) fared better.

Conclusion

The literature suggests that surgical intervention for TON is indicated despite delayed presentation, and is a better choice than no intervention at all. Patients with complete blindness on presentation (NLP) tend to have a poorer surgical outcome.

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Lovely image of a Tornwaldt’s cyst

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The Waterless Portable Private Toilet: An Innovative Sanitation Solution in Disaster Zones

Research Articles
Yongkyun Kim, Shervin Hashemi, Mooyoung Han, Tschungil Kim, Hong-Gyoo Sohn
Disaster Medicine and Public Health Preparedness, FirstView Article(s), 5 pages

Abstract

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Engaging the Diaspora in Response to the 2014 Fogo Volcano Eruption in Cape Verde

Letter
Elena Savoia, Leesa Lin, Noah Klein, Alberto Montrond
Disaster Medicine and Public Health Preparedness, FirstView Article(s), 2 pages

Abstract

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CeO2-covered nanofiber for highly efficient removal of phosphorus from aqueous solution

Publication date: 15 April 2016
Source:Journal of Hazardous Materials, Volume 307
Author(s): Young Gun Ko, Taegu Do, Youngsang Chun, Choong Hyun Kim, Ung Su Choi, Jae-Yong Kim
The lowering phosphorus concentration of lakes or rivers using adsorbents has been considered to be the most effective way to prevent water eutrophication. However, the development of an adsorbent is still challenging because conventional adsorbents have not shown a sufficient phosphorus adsorption capacity (0.3–2.0mmol/g) to treat industrial, agricultural or domestic wastewater at a large scale. Herein, a novel and effective strategy to remove phosphorus efficiently with a CeO2-covered nanofiber is shown. The CeO2-covered nanofiber was synthesized through (1) amine group immobilization onto an electrospun polyacrylonitrile nanofiber and (2) adsorption of Ce3+ on it. The CeO2-covered nanofiber played a role in catching phosphate ions in an aqueous solution by the oxidation, reduction, and ion-exchange of adsorbed Ce3+ on the nanofiber from CeO2 to CePO4, and enabled remarkable phosphate adsorption capacity of the nanofiber (ca. 17.0mmol/g) at the range of ca. pH 2–6. Our strategy might be the most feasible method to efficiently lower the phosphorus concentration in lakes or rivers owing to the easy and inexpensive preparation of CeO2-covered nanofiber at an industrial scale, with a high phosphate adsorption capacity.

Graphical abstract

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Reporting on Adverse Clinical Events

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Mouse is the new woman? Translational research in reproductive immunology

Abstract

In an outbred mating typical of human reproduction, the embryo and feto-placental unit express paternal antigens to which the mother's immune system can react. However, the embryo and feto-placental unit can engineer the maternal immune defense system towards helpful rather than harmful reactions. Indeed, this begins with the prospective mother's exposure to paternal seminal plasma. In this review, the pregnancy complications of implantation failure (infertility), recurrent spontaneous abortion, pre-eclampsia and intrauterine growth restriction, and premature labor are examined to determine the degree of similarity between events in women and events in lab mouse models. The artificially induced model of endometriosis (which contributes to infertility) is also compared to what occurs in women. One may conclude that the female mouse provides a good analog of the human female. Nevertheless, it is always important to validate mouse data with human studies. The discussion focuses on the intrauterine interface between embryonic and placental tissues and maternal uterine tissues and the dialogue that is referred to as cross-talk. Issues relating to bidirectional transplacental traffic of immune system cells are not discussed as there is very little relevant data.

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Rheumatic diseases should be actively treated in pregnancy, new guidelines say

New guidelines on prescribing anti-rheumatic drugs for pregnant and breastfeeding women, published in the Rheumatology journal, warn against withdrawing potentially beneficial treatment and recommend…

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Real acupuncture for hot flushes is no better than sham, study finds

Acupuncture, performed by a practitioner of Chinese medicine, was found to be no better at reducing menopausal hot flushes than sham acupuncture, in which needles do not penetrate the skin, in a…

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Vorteile durch minimalinvasiven Zugang in der Klappenchirurgie

Aortenklappenersatz
Minimalinvasive Zugänge für Herzklappenoperationen werden zwar zunehmend benutzt, dennoch ist speziell beim Aortenklappenersatz dieser Zugang noch immer die Ausnahme und wird auch für die isolierte Mitralklappenoperation in weniger als der Hälfte der Fälle angewandt. Dies betrifft aber auch nur ausgesuchte Zentren mit hohen Fallzahlen.

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Modified measles versus rubella versus atypical measles: One and same thing

Surender Nikhil Gupta, Naveen Gupta, Shivani Gupta

Journal of Family Medicine and Primary Care 2015 4(4):566-569

Introduction: In outbreak settings, more than one virus may be infecting the given population. In twin or triple outbreak of measles, German measles (rubella), and varicella in highly immunized hilly areas, maximal number of the case patients in all the hilly villages belonged to the older age group. It suggested an obvious shift to the higher age group, warranting second dose opportunity in such case scenario. The clinical presentations of viral diseases are too similar to differentiate. The aim is to clearly categorize the case patients of modified measles, rubella, and atypical measles in outbreak settings. Results: Four outbreaks are listed. In the first one, sixty case patients were identified from 1026 people in 5 villages. Of these, 41 were diagnosed by clinically, 8 were laboratory confirmed as measles and 11 were epidemiologically linked German measles case patients. Seventy percent of the cases were vaccinated for measles. In second case, we identified 29/35 measles and 6/35 were confirmed as epidemiologically linked unvaccinated chickenpox case patients. In third one, we identified 116 cases in eight villages (112/116 clinically and 04/116 laboratory confirmed). Majority of cases were immunized against measles, but only minor cases for rubella. In fourth case, we identified 505 case patients from mixed outbreaks of varicella, measles and rubella (30/505 clinically, 467/505 epidemiologically linked and 8/505 laboratory confirmed case patients from a study population of 3280). In all the four outbreaks, prima facie, the clinical presentations of both rubella and modified measles were difficult to differentiate. Discussion: On the basis of outbreak investigation and analytical inference, it has been observed that the symtomatology of modified measles and laboratory confirmed rubella case patients/epidemiologically linked cases are so similar placed that many a time, it becomes much difficult to line list the cases in one section of modified measles or rubella or atypical cases. Conclusion: Similarities of morphological symptoms between modified measles and rubella is the point of challenge and it causes debate between pediatrician and field epidemiologist to differentiate and classify them.

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The Waterless Portable Private Toilet: An Innovative Sanitation Solution in Disaster Zones

Research Articles
Yongkyun Kim, Shervin Hashemi, Mooyoung Han, Tschungil Kim, Hong-Gyoo Sohn
Disaster Medicine and Public Health Preparedness, FirstView Article(s), 5 pages

Abstract

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Engaging the Diaspora in Response to the 2014 Fogo Volcano Eruption in Cape Verde

Letter
Elena Savoia, Leesa Lin, Noah Klein, Alberto Montrond
Disaster Medicine and Public Health Preparedness, FirstView Article(s), 2 pages

Abstract

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CeO2-covered nanofiber for highly efficient removal of phosphorus from aqueous solution

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Reporting on Adverse Clinical Events

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Mouse is the new woman? Translational research in reproductive immunology

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Rheumatic diseases should be actively treated in pregnancy, new guidelines say

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Αρχειοθήκη ιστολογίου

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Η λίστα ιστολογίων μου

Τρίτη 19 Ιανουαρίου 2016

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Graphical abstract

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