150 results on '"Melis, T."'
Search Results
2. The formation of lateral conical defects after radical mastectomy in patients with breast cancer
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Melis T. Ozhorbaev, Ilgiz G. Gataullin, and Artur R. Shagivaliev
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radical mastectomy ,breast cancer ,lateral conical defect ,Medicine - Abstract
Aim to find the main causes of the lateral conical defects formation in obese patients after radical mastectomy for breast cancer. Material and methods. We analysed prospectively 82 breast cancer patients with various degrees of obesity. The patients were randomized into two groups. In the main group (43 patients), the original RME method (RU patent No. 2748639, dated May 28, 2021) was used; in the control group (39 patients), the standard RME method was applied. Results. The use of a standard elliptical incision for RME in obese patients leads to the formation of lateral conical defects, the frequency of which reaches 74%. There is a high correlation between the frequency of formation of lateral conical defects in radical mastectomy with expansion of the breast base (Spearman index 0.85 (p0.05), chest circumference (Spearman index 0.92(p0.05), fat pedicle thickness (Spearman index 0.94 (p 0.05) and degree of mammoptosis (Spearman index 0.98 (p 0.05).
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- 2022
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3. Assessment of Index Case Family Testing Among Adults Attending Art Clinic at Kule Refugee Camp, Southwest Ethiopia: 2021
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Wegu Y, Sileshi T, and Melis T
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index case testing ,refugee ,hiv/aids ,associated factors ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Yohannes Wegu,1 Tesfaye Sileshi,1 Tamirat Melis2 1Department of Public Health, College of Medicine & Health Sciences, Metu University, Metu, Ethiopia; 2Department of Public Health, College of Medicine & Health Sciences, Wolkite University, Wolkite, EthiopiaCorrespondence: Tamirat Melis Email tamiratmelis27@gmail.comBackground: Human immune virus testing and counseling is the gateway to accessing anti-retro viral treatment. As a priority population group, families of index clients have been largely neglected due to a number of different factors. Testing sexual partners and children of human immunodeficiency virus (HIV) positive persons (index case finding) is a promising way of identifying HIV-positive persons unaware of their HIV status.Objective: The aim of this study was to determine the proportion of index case family testing and its associated factors among adults attending an ART clinic at Kule Refugee Camp, southwestern Ethiopia, 2021.Methods and Materials: An institution-based cross-sectional study was conducted at Kule Refugee Camp, Gambela region. A total of 348 adult ART clinic attendants were selected by using systematic random sampling technique. Data were collected by using a pre-tested interviewer-administered semi-structured questionnaire. The collected data were entered into Epi-Data 3.1 and exported to SPSS version 23. Bivariable and multivariable logistic regression analyses were used to identify factors associated with index case family testing. The strength of association was assessed by adjusted odds ratio, and statistical significance was declared at a p-value < 0.05 and 95% CI.Results: The proportion of index case family testing was 49.%. Educational level: primary level (AOR=2.4, 95% CI=1.24– 4.42), secondary level and above (AOR=2.6, 95% CI=1.20– 4.70), ART adherence (AOR= 6, 95% CI= 2.8– 14.1), years on ART (AOR= 2, 95% CI= 1.10– 3.20), discussion about HIV testing (AOR=3.6, 95% CI=1.30– 10.30), disclosure status (AOR 6, 95% CI=2.21– 16.94), and being tested through voluntary counseling and testing (AOR=3.0, 95% CI1.70– 5.70) were factors significantly associated with index case family HIV testing.Conclusion and Recommendations: This study revealed that the proportion of index case family HIV testing in Kule Refugee Camp was 49%. Educational status, adherence status, disclosure status, years on ART, and voluntary counseling and testing were determinant factors. Health professionals should advise index cases to adhere to ART drugs, to disclose their HIV status to their families, and should provide counseling based on guidelines.Keywords: index case testing, refugee, HIV/AIDS, associated factors
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- 2022
4. Simulation based dynamic laser stimulation for failure analysis of analog and mixed-signal circuits
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Melis, T., Simeu, E., Saury, L., and Auvray, E.
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- 2021
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5. Acceptability and Factors Associated with Immediate Postpartum Intrauterine Contraceptive Device Use Among Women Who Gave Birth at Government Hospitals of Gamo Zone, Southern Ethiopia, 2019
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Gebremedhin Jnr M, Alemayehu A, Yihune M, Dessu S, Melis T, and Nurahmed N
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acceptability ,immediate post partum intrauterine contraceptive device ,Gynecology and obstetrics ,RG1-991 - Abstract
Mesfin Gebremedhin Jnr,1 Addisu Alemayehu,2 Manaye Yihune,1 Samuel Dessu,3 Tamirat Melis,4 Negash Nurahmed5 1Arba Minch University, College of Medicine & Health Sciences, Department of Public Health, Arba Minch, Ethiopia; 2Dilla University, College of Medicine & Health Sciences, Department of Public Health, Dilla, Ethiopia; 3Wolkite University, College of Medicine & Health Sciences, Department of Public Health, Wolkite, Ethiopia; 4Wachamo University, College of Medicine & Health Sciences, Department of Public Health, Hosanna, Ethiopia; 5Paster Ethiopian Public Health Institute, Addis Ababa, EthiopiaCorrespondence: Mesfin Gebremedhin Jnr Email mesfing762@gmail.comBackground: An intrauterine contraceptive device is suitable for women of all reproductive age groups for preventing unwanted pregnancies. Immediate postpartum family planning (PPFP) services need to be emphasized when the woman leaves the hospital. Despite the accepted demand for PPFP, many women do not access the services. Therefore, this study aimed to assess acceptability and factors associated with immediate postpartum intrauterine contraceptive device use among women who gave birth at government hospitals of Gamo Zone, Southern Ethiopia.Methods: A cross-sectional study was conducted from March 1 to 30, 2019 with 452 participants studied using systematic random sampling technique. Data was collected using a pretested interviewer-administered questionnaire from March 1 to 30, 2019. The data were coded, cleaned and entered into Epi-data manager version 4.2.2.1 and exported to SPSS version 23 for advanced analysis. Binary logistic regression was performed to identify associated factors of immediate PPIUCD acceptability.Results: This study revealed that about 161 (35.6%) in 95% CI (31.0, 39.6) of the study participants accepted immediate PPIUCD. Multiparty (AOR = 2.33, 95% CI, (1.29, 4.20)), completed antenatal follow up (AOR = 3.65, 95% CI, (2.22, 5.99)), counselling (AOR= 8.38, 95% CI, (4.85, 14.48)) and prior discussion (AOR=2.57, 95% CI, (1.51, 4.36)) were statistically significant.Conclusion and Recommendation: Even though 58% of the mothers were counselled about PPIUCD during the important cascade of pregnancy and 53% of the mothers completed antenatal service, efforts need to improve antenatal care services and integrate counselling services through the whole cascade of pregnancy.Keywords: acceptability, immediate postpartum intrauterine contraceptive device
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- 2021
6. COVID-19 Preventive Measure Practices and Knowledge of Pregnant Women in Guraghe Zone Hospitals
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Fikadu Y, Yeshaneh A, Melis T, Mesele M, Anmut W, and Argaw M
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covid-19 ,guraghe zone ,pregnant women ,2020 ,Gynecology and obstetrics ,RG1-991 - Abstract
Yohannes Fikadu,1 Alex Yeshaneh,1 Tamirat Melis,2 Molalegn Mesele,3 Walellign Anmut,3 Muche Argaw1 1Department of Midwifery, College of Medicine and Health Science, Wolkite University, Wolkite, Ethiopia; 2Department of Public Health, College of Medicine and Health Science, Wachemo University, Hossana, Ethiopia; 3Department of Midwifery, College of Medicine and Health Science, Wolaita Sodo University, Wolaita Sodo, EthiopiaCorrespondence: Yohannes FikaduDepartment of Midwifery, College of Medicine and Health Science, Wolkite University, Wolkite, EthiopiaEmail nechsar@gmail.comBackground: The COVID-19 pandemic is caused by a severe acute respiratory syndrome coronavirus which emerged in Wuhan. Recently this virus has rapidly spread throughout Ethiopia. The current preventive measure practices and knowledge have gaps. Therefore this study aimed to assess COVID-19 preventive measure practices and knowledge of pregnant women in Guraghe Zone hospitals.Methods and Materials: This cross-sectional study was conducted from July 27–August 27, 2020 among pregnant women in Guraghe zone hospitals. Systematic random sampling technique were employed to select 403 participants. Data were checked manually for completeness, cleaned, and stored in Epi Data and exported to SPSS for further analysis. Variables which have a P-value less than 0.25 on bivariate analysis were taken to multivariate analysis. A P-value of less than 0.05 and 95% confidence level was used as a cut-off point for presence of association in multivariate analysis.Results: COVID-19 preventive measure practice and knowledge of pregnant women visiting Guraghe Zone hospitals was 76.2% and 54.84%, respectively. Those aged 20– 24 (AOR=1.22, 95% CI=1.15– 22.24), 25– 29 (AOR=1.32, 95% CI=1.20– 20.25), and 30– 34 (AOR=2.57, 95% CI– 2.32– 43.38) were more likely to practice COVID-19 preventive measures. Those residing in urban area (AOR=2.16, 95% CI=1.24– 3.77) and perceiving that COVID-19 is worst for people with chronic disease (AOR=5.12, 95% CI=1.73– 15.17) were more likely to practice COVID-19 preventive measures.Conclusion: COVID-19 preventive measure practices and knowledge were low. Age, residence, and perception of COVID-19 on chronic disease were independent factors associated with preventive measure practices. Pregnant women aged ≥ 35 need to be counseled on practices of preventing COVID-19 by their healthcare providers.Keywords: COVID-19, Guraghe Zone, pregnant women, 2020
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- 2021
7. Perceived Stigma and Associated Factors Among HIV Positive Adult Patients Attending Antiretroviral Therapy Clinics at Public Facilities of Butajira Town, Southern Ethiopia, 2020
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Melis T, Fikadu Y, and Lemma L
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stigma ,associated factors and art patients ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Tamirat Melis,1 Yohannes Fikadu,2 Lire Lemma1 1Wachamo University, College of Medicine & Health Sciences, Department of Public Health, Hosanna, Ethiopia; 2Wolkite University, College of Medicine & Health Sciences, Department of Public Health, Wolkite, EthiopiaCorrespondence: Tamirat Melis Email tamiratmelis27@gmail.comBackground: Stigma refers to attitudes and beliefs that lead people to reject, avoid, or fear those they perceive as being different. It identifies people as criminals, slaves, or traitors to be shunned. Globally 30– 80% of people living with HIV experience stigma during their lifetime. There is a paucity of research in identifying determinants of stigma on HIV positive patients in Ethiopia. The aim of this study is to assess magnitude and factors associated with stigma among HIV positive adults attending antiretroviral therapy (ART) clinics at public health facilities of Butajira town.Methods: Institution-based cross-sectional study was conducted at public health facilities of Butajira town. A total of 403 study participants were selected by systematic random sampling technique. Data were collected by using pre-tested interviewer-administered semi-structured questionnaire. The collected data were entered into EpiData3.1 and exported to SPSS version 23. Bivariate and multivariable logistic regression analysis were used to identify factors associated with stigma. The strength of association was assessed by crude odds ratio and adjusted odds ratio for bivariate and multivariable logistic regression analysis, respectively. Statistical significance was declared at p-value < 0.05 and 95% CI.Results: The magnitude of stigma among HIV positive patient was 28.9%. Discussing about safer sex (AOR: 2; 95% CI: (1.14,3.18), disclosing HIV positive status (AOR: 6;95% CI: (2.3,14.9), being a female (AOR: 2.5; 95% CI: (1.41,4.12) and age > 34 years (AOR: 4; 95% CI: (1.46,12.9) were the independent factors associated with stigma in HIV positive patients.Conclusion: The magnitude of stigma in ART patient is still unresolved problem. Discussing about safer sex, disclosing HIV positive status, being a female and age were the independent factors associated with stigma in HIV positive patients.Keywords: stigma, associated factors, ART patients
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- 2020
8. Topography of calcium phosphate ceramics regulates primary cilia length and TGF receptor recruitment associated with osteogenesis
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Zhang, Jingwei, Dalbay, Melis T., Luo, Xiaoman, Vrij, Erik, Barbieri, Davide, Moroni, Lorenzo, de Bruijn, Joost D., van Blitterswijk, Clemens A., Chapple, J. Paul, Knight, Martin M., and Yuan, Huipin
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- 2017
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9. The formation of lateral conical defects after radical mastectomy in patients with breast cancer
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Ozhorbaev, Melis T., primary, Gataullin, Ilgiz G., additional, and Shagivaliev, Artur R., additional
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- 2022
- Full Text
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10. Utilization of Immediate Postpartum Intrauterine Contraceptive Device and Associated Factors among Women Who Gave Birth at Government Hospitals of Gamo Zone, Southern Ethiopia, 2019
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Fikadu Y, Melis T, Arja A, Alemayehu A, Gebremedhin M, and Yihune M
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Government ,business.industry ,Medicine ,Socioeconomics ,business - Abstract
Background: An intrauterine contraceptive device is suitable for women of all reproductive age groups for preventing unwanted pregnancies. Immediate post partum family planning services need to be emphasized where in the woman leaves the hospital with safe and effective contraception in place. Despite the accepted demand for post partum family planning, many women do not access the services they need prevent unintended pregnancies. Objective: To assess utilization of immediate postpartum intrauterine contraceptive device and associated factors among women who gave birth at government hospitals of Gamo Zone, Southern Ethiopia. Method: Facility-based crosses sectional study was conducted from March 1 to 30 of 452 participants were studied using systematic random sampling technique. Data were entered into Epi-data v. 4.2.2.1 and exported to SPSS v.23 for analysis. Crude or adjusted odds ratio, and 95% confidence interval were used to assess the strength of association and statistical significance. Variables which had a p-value of ≤0.25 in bivariate analysis were considered as candidates for multivariate regression analysis; variables that had a p-value of ≤0.05 in the multivariate analysis were considered as independent factors associated with utilization of immediate postpartum intrauterine contraceptive device among parturients in the final multiple logistic regression analysis. Results: This finding revealed that about 161 (36%) of the respondents had showed willingness to use immediate PPIUD, however, only about 62 (14%) of study participants were utilized immediate PPIUCD. Mothers who did not plan to have another child (AOR = 2.84, 95% CI, (1.12, 7.21), undecided plan to have another child (AOR = 2.55, 95% CI, (1.21, 5.35), counselled about PPIUCD (AOR=4.35, 95% CI, (2.11, 8.96) and completed ANC follow up (AOR=2.43, 95% CI, (1.28, 4.60) were associated with immediate post partum contraceptive device utilization. Conclusion and Recommendation: Even though 58% and 53% of the mothers were counselled and completed antenatal service respectively but efforts need to improve antenatal care service and integrate counselling service through the whole cascade of pregnancy.
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- 2021
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11. Effect of the neuropeptides vasoactive intestinal peptide, peptide histidine methionine and substance P on human major salivary gland secretion
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Del Fiacco, M, Quartu, M, Ekström, J, Melis, T, Boi, M, Isola, M, Loy, F, and Serra, M P
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- 2015
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12. Cannabinoid CB1 receptors in the paraventricular nucleus and central control of penile erection: Immunocytochemistry, autoradiography and behavioral studies
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Castelli, M.P., Piras, A.P., Melis, T., Succu, S., Sanna, F., Melis, M.R., Collu, S., Grazia Ennas, M., Diaz, G., Mackie, K., and Argiolas, A.
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- 2007
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13. Adipogenic Differentiation of hMSCs is Mediated by Recruitment of IGF-1r Onto the Primary Cilium Associated With Cilia Elongation
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J. Paul Chapple, Stephen D. Thorpe, Melis T. Dalbay, John T. Connelly, and Martin M. Knight
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Cellular differentiation ,Human mesenchymal stem cell ,Biology ,Tissue‐Specific Stem Cells ,Receptor, IGF Type 1 ,03 medical and health sciences ,0302 clinical medicine ,Osteogenic differentiation ,Adipocytes ,Humans ,Cilia ,Cells, Cultured ,030304 developmental biology ,0303 health sciences ,Adipogenesis ,Chondrogenic differentiation ,Cilium ,Cell Cycle ,Mesenchymal stem cell ,Mesenchymal Stem Cells ,Cell Biology ,Transfection ,Cell cycle ,Cell biology ,IGF‐1 receptor ,Adipogenic differentiation ,Molecular Medicine ,Signal transduction ,Stem cell ,030217 neurology & neurosurgery ,Signal Transduction ,Developmental Biology - Abstract
Primary cilia are single non-motile organelles that provide a highly regulated compartment into which specific proteins are trafficked as a critical part of various signaling pathways. The absence of primary cilia has been shown to prevent differentiation of human mesenchymal stem cells (hMSCs). Changes in primary cilia length are crucial for regulating signaling events; however it is not known how alterations in cilia structure relate to differentiation. This study tested the hypothesis that changes in primary cilia structure are required for stem cell differentiation. hMSCs expressed primary cilia that were labeled with acetylated alpha tubulin and visualized by confocal microscopy. Chemically induced differentiation resulted in lineage specific changes in cilia length and prevalence which were independent of cell cycle. In particular, adipogenic differentiation resulted in cilia elongation associated with the presence of dexamethasone, while insulin had an inhibitory effect on cilia length. Over a 7-day time course, adipogenic differentiation media resulted in cilia elongation within 2 days followed by increased nuclear PPARγ levels; an early marker of adipogenesis. Cilia elongation was associated with increased trafficking of insulin-like growth factor-1 receptor β (IGF-1Rβ) into the cilium. This was reversed on inhibition of elongation by IFT-88 siRNA transfection, which also decreased nuclear PPARγ. This is the first study to show that adipogenic differentiation requires primary cilia elongation associated with the recruitment of IGF-1Rβ onto the cilium. This study may lead to the development of cilia-targeted therapies for controlling adipogenic differentiation and associated conditions such as obesity. Stem Cells 2015;33:1952–1961
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- 2015
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14. Only people learn: organisations and systems can adapt
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Bolk, H., Elswijk, P. van, Melis, T., and Praag, A. M. van
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Information systems -- Analysis ,Learning -- Analysis ,Management science -- Social aspects - Published
- 1997
15. Topography of calcium phosphate ceramics regulates primary cilia length and TGF receptor recruitment associated with osteogenesis
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Jingwei Zhang, Huipin Yuan, E.J. Vrij, Lorenzo Moroni, Xiaoman Luo, J. Paul Chapple, Davide Barbieri, Martin M. Knight, Melis T. Dalbay, Clemens van Blitterswijk, Joost D. de Bruijn, Biomaterials Science and Technology, CTR, RS: MERLN - Complex Tissue Regeneration (CTR), Division Instructive Biomaterials Eng, and RS: MERLN - Instructive Biomaterials Engineering (IBE)
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0301 basic medicine ,Axoneme ,Calcium Phosphates ,Pathology ,Ceramics ,Topography ,BONE-GRAFT SUBSTITUTES ,02 engineering and technology ,Calcium phosphate ceramic ,Biochemistry ,Primary cilia ,Osteogenesis ,Mesenchymal stromal cell ,Cilium ,General Medicine ,021001 nanoscience & nanotechnology ,DEXAMETHASONE ,Cell biology ,DIFFERENTIATION ,SHAPE ,Stem cell ,0210 nano-technology ,Biotechnology ,EXPRESSION ,medicine.medical_specialty ,Stromal cell ,Materials science ,FIBRONECTIN ,Biomedical Engineering ,chemistry.chemical_element ,Bone Marrow Cells ,Calcium ,MESENCHYMAL STEM-CELLS ,Biomaterials ,03 medical and health sciences ,TGFβ ,Dogs ,TGF beta ,Full Length Article ,medicine ,Animals ,Humans ,Cilia ,Bone ,Molecular Biology ,Actin ,ComputingMethodologies_COMPUTERGRAPHICS ,LINEAGE COMMITMENT ,Mesenchymal stem cell ,IN-VITRO ,030104 developmental biology ,chemistry ,Stromal Cells ,Receptors, Transforming Growth Factor beta ,Transforming growth factor - Abstract
Graphical abstract, The surface topography of synthetic biomaterials is known to play a role in material-driven osteogenesis. Recent studies show that TGFβ signalling also initiates osteogenic differentiation. TGFβ signalling requires the recruitment of TGFβ receptors (TGFβR) to the primary cilia. In this study, we hypothesize that the surface topography of calcium phosphate ceramics regulates stem cell morphology, primary cilia structure and TGFβR recruitment to the cilium associated with osteogenic differentiation. We developed a 2D system using two types of tricalcium phosphate (TCP) ceramic discs with identical chemistry. One sample had a surface topography at micron-scale (TCP-B, with a bigger surface structure dimension) whilst the other had a surface topography at submicron scale (TCP-S, with a smaller surface structure dimension). In the absence of osteogenic differentiation factors, human bone marrow stromal cells (hBMSCs) were more spread on TCP-S than on TCP-B with alterations in actin organization and increased primary cilia prevalence and length. The cilia elongation on TCP-S was similar to that observed on glass in the presence of osteogenic media and was followed by recruitment of transforming growth factor-β RII (p-TGFβ RII) to the cilia axoneme. This was associated with enhanced osteogenic differentiation of hBMSCs on TCP-S, as shown by alkaline phosphatase activity and gene expression for key osteogenic markers in the absence of additional osteogenic growth factors. Similarly, in vivo after a 12-week intramuscular implantation in dogs, TCP-S induced bone formation while TCP-B did not. It is most likely that the surface topography of calcium phosphate ceramics regulates primary cilia length and ciliary recruitment of p-TGFβ RII associated with osteogenesis and bone formation. This bioengineering control of osteogenesis via primary cilia modulation may represent a new type of biomaterial-based ciliotherapy for orthopedic, dental and maxillofacial surgery applications. Statement of Significance The surface topography of synthetic biomaterials plays important roles in material-driven osteogenesis. The data presented herein have shown that the surface topography of calcium phosphate ceramics regulates mesenchymal stromal cells (e.g., human bone marrow mesenchymal stromal cells, hBMSCs) with respect to morphology, primary cilia structure and TGFβR recruitment to the cilium associated with osteogenic differentiation in vitro. Together with bone formation in vivo, our results suggested a new type of biomaterial-based ciliotherapy for orthopedic, dental and maxillofacial surgery by the bioengineering control of osteogenesis via primary cilia modulation.
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- 2017
16. Il Parco Solare di Ottana per la sperimentazione delle tecnologie del solare a concentrazione
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Camerada, M., Cau, G., Cocco, D., Damiano, A., Melis, T., Musio, M., DEMONTIS, VALERIA, Camerada, M., Cau, G., Cocco, D., Damiano, A., Demontis, Valeria, Melis, T., and Musio, M.
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This paper presents the main features of the pilot solar power plant under construction in Sardinia (Italy), which is based on concentrating solar power and concentrating photovoltaic plants with energy storage. The plant was developed with the aim of produce electricity with desired power profiles in accordance with weather forecasting.
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- 2015
17. HIZLI MODA MARKALARINDA ÇEVİK VE ESNEK TEDARİK ZİNCİRİ YÖNETİMİ
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Yücel Öztürkoğlu, Aylin Caliskan, and Melis T Karacasulu
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Social ,0502 economics and business ,05 social sciences ,050301 education ,050211 marketing ,General Medicine ,Tedarik zinciri yönetimi,hızlı moda markası,perakendecilik ,0503 education ,Sosyal - Abstract
Yogun bir rekabetin yasandigi is dunyasinda firmalar surekliliklerini saglamak icin tedarik zinciri yonetimi kavramina oldukca fazla onem vermeye baslamislardir. Bu surecte, zincir uyelerinin tek bir isletme gibi hareket edebilmesi neticesinde maliyetler azalmakta, belirsizlikler ortadan kalkmakta ve isletmelerin rekabet gucleri artmaktadir. Son donemlerde moda ve hazir giyim sanayinin yapisi, mevcut sezonlara ara sezonlar ekleyerek, musteriye daha cesitli secenekler sunmayi hedefleyen hizli moda kavramina dogru yonelmektedir. Bu yolla musteriye daha dusuk fiyatlar sunulmakta, satis miktarlari, kar ve marka bilinirligi artmaktadir. Bu calismada, hizli moda sektorunde uygulanmak uzere, tedarik zincirinin ceviklik ve esneklik boyutlariyla firma performansi arasindaki iliskiyi ortaya koyan bir model gelistirilmis ve modelde yer alan hipotezler coklu regresyon analizi ile test edilmistir.
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- 2016
18. EXPRESSION OF TRPV1 AND CGRP IN SPINAL PRIMARY AFFERENT NEURONS IN A RAT MODEL OF BORTEZOMIB-INDUCED PERIPHERAL NEUROPATHY TREATED WITH ANALGESICS
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Poddighe, L, Quartu, M, Serra, M, Boi, M, Melis, T, Picci, C, Del Fiacco, M, Lanza, M, Caselli, G, MEREGALLI, CRISTINA, CANTA, ANNALISA ROSANNA, CHIORAZZI, ALESSIA, SALA, BARBARA, OGGIONI, NORBERTO, CAVALETTI, GUIDO ANGELO, CAROZZI, VALENTINA ALDA, Poddighe, L, Quartu, M, Serra, M, Boi, M, Melis, T, Picci, C, Del Fiacco, M, Meregalli, C, Canta, A, Chiorazzi, A, Sala, B, Oggioni, N, Lanza, M, Caselli, G, Cavaletti, G, and Carozzi, V
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neuropathic pain, peripheral neuropathy, immunohistochemistry - Abstract
Bortezomib (BTZ), a selective proteasome inhibitor, is an antitumor drug used to treat multiple myeloma. As a side effect, BTZ determines a painful peripheral neuropathy (PPN), often refractory to management. Chronic BTZ administration in female Wistar rats induced a PPN in which the development of mechanical allodynia is associated to an increase in the expression of TRPV1 and CGRP in the dorsal root ganglia (DRG) and spinal cord dorsal horn. In this study we examine the possible role of two standard analgesics, Gabapentin (Gaba) and buprenorfin (Bupre), in modulating the expression of TRPV1 and CGRP in the DRG and spinal cord of rats chronically treated with BTZ. To this aim, female Wistar rats were treated with BTZ 0.20 mg/kg, 3 times a week for 8 weeks (i.v.). Then Gaba (100 mg/kg, daily, p.o.) and Bupre (28,8 µg/kg, daily, s.c.) were orally administered in a curative schedule for 2 weeks. The expression of TRPV1 and CGRP, a neuropeptide involved in nociceptive neurotransmission, was examined in L4-L5 DRG and spinal cord segments by means of western blot (WB) and immunohistochemistry. WB analysis did not show any statistically significant change of protein levels in DRG and spinal cord. Instead, chronic BTZ treatment followed by a 2 weeks follow-up period affected TRPV1 expression by inducing an increase in the proportion of TRPV1-like immunoreactive (LI) DRG neurons, whereas did not affect the percentage of CGRP-LI neurons. Labeled perikarya were mostly of small- and medium-size. No BTZ-induced changes in immunolabeling were appreciable in the dorsal horn of the spinal cord. Treatment with Gaba and Bupre reduced levels of TRPV1 protein in spinal cord homogenates, whereas had no effect on DRG protein levels. None of the analgesics appeared to reverse in a statistically significant way the BTZ-induced increase of labelled DRG neurons nor induced any change in the detectability of positive innervation in the spinal cord dorsal horn.
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- 2013
19. STUDY OF THE CALCITONIN GENE-RELATED PEPTIDE-POSITIVE INTRAEPIDERMAL NERVE FIBERS IN A RAT MODEL OF BORTEZOMIB-INDUCED PERIPHERAL NEUROPATHY
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Boi, M, Quartu, M, Serra, M, Poddighe, L, Melis, T, Picci, C, Del Fiacco, M, Lanza, M, Caselli, G, MEREGALLI, CRISTINA, CANTA, ANNALISA ROSANNA, CHIORAZZI, ALESSIA, SALA, BARBARA, OGGIONI, NORBERTO, CAVALETTI, GUIDO ANGELO, CAROZZI, VALENTINA ALDA, Boi, M, Quartu, M, Serra, M, Poddighe, L, Melis, T, Picci, C, Del Fiacco, M, Meregalli, C, Canta, A, Chiorazzi, A, Sala, B, Oggioni, N, Lanza, M, Caselli, G, Cavaletti, G, and Carozzi, V
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skin biopses, peripheral neuropathy, neuropathic pain, analgesia - Abstract
Bortezomib (BTZ), a selective proteasome inhibitor, is a potent antineoplastic drug to treat multiple myeloma. In clinical practice, the most significant side effect of its administration, is a peripheral painful sensory neuropathy (PN), characterized by numbness and tingling in a distal stocking-glove distribution as well as distal paresthesia and generally associated with impairment of Adelta and C type primary afferent fibers. At the moment the therapies for PN are not really effective and almost only symptomatic. To evaluate if BTZ-induced sensory deficits are associated to loss of epidermal nerve fibers as is observed in other PN conditions, here we examine the effect of a well-established chronic BTZ-treatment schedule on the number of intraepidermal nerve fibers (IENF) in a rat model of BTZ-induced PN and compared the outcome of chronic BTZ-treatment followed by two-weeks of follow up with that of animals that received a 2-weeks treatment period with two analgesic drugs commonly used in clinical practice such as Gabapentin (Gaba) and buprenorphine (Bupre). To these aims, female Wistar rats were treated with BTZ 0.20 mg/kg, 3 times a week for 8 weeks (i.v.). Then analgesic were orally administered according to the following curative schedule: Gaba (100 mg/kg, daily, p.o.), Bupre (28,8 μg/kg, daily, s.c.). At the end of treatments, the hindlimb footpad skin was examined by immunohistochemistry for the pan-neuronal marker PGP9.5 and the neuropeptide calcitonin gene-related peptide (CGRP), a neuropeptide involved in pain perception and neurotransmission. Labelled nerve fibers were distributed in the reticular and papillary dermis and within the epidermal lining. Quantitative evaluation of IENF showed that, according to the painful symptoms induced by BTZ, the mean linear density of CGRP-labelled IENF normalized by that of the PGP9.5-labelled ones shows a statistically significant decrease in BTZ-treated rats. None of the analgesics used in this study appeared to reverse the BTZ-induced loss of IENF. Results obtained suggest that the CGRP-positive innervation is likely involved in the persistence of BTZ-induced pain and that detectability of CGRP-positive IENF appears not to be related to the effectiveness of the selected analgesics.
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- 2013
20. Imidazoline Receptor 2 is an Effective Target for Neuropathic Pain in a Murine Model of Bortezomib-Induced Peripheral Neuropathy
- Author
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CAROZZI, VALENTINA ALDA, CANTA, ANNALISA ROSANNA, CHIORAZZI, ALESSIA, SALA, BARBARA, OGGIONI, NORBERTO, Lanza, M, Quartu, M, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, Caselli, G., Carozzi, V, Canta, A, Chiorazzi, A, Sala, B, Oggioni, N, Lanza, M, Quartu, M, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, and Caselli, G
- Subjects
peripheral neuropathy, neuropathic pain, analgesia - Abstract
Bortezomib (BTZ) is a proteasome inhibitor used as first-line therapy for multiple myeloma. However, its administration induces the development of severe painful peripheral neuropathy (PPN). This painful condition is an important medical need since the available treatments are actually ineffective. We recently described a mice model of PPN that shares most of the conditions found in patients treated chronically with BTZ (Carozzi et al., 2013). In fact, BTZ determines dysfunction of all fiber types in sensory nerves and, at least in mice, alters the electrical activity of the spinal dorsal horn neurons. This alteration of the basal electrophysiological activity induces also relevant changes in the central nociceptive transmission. In this work we characterize the neuroprotective effects of an imidazoline receptor 2 ligand (CR4056) able to allosterically inhibit the activity of monoamine oxidase-A, a key enzyme in the regulation of neuropathic pain. Wistar rats were treated with BTZ 0.20 mg/kg, 3 times a week for 8 weeks (i.v). Then CR4056 was orally administered in a curative schedule at 6 mg/kg, once a day, for 2 weeks. Gabapentin (100 mg/kg, daily, p.o.) and buprenorphine (28,8µg/kg, daily, s.c.) were used as internal analgesic standards. At the end of both BTZ and analgesic treatments, we measured the caudal and sciatic nerve conduction velocity (NCV), the morphological/morphometrical alterations in the caudal nerve and the neuropathic pain development. BTZ treatment induced a significant impairment of sensory, but not motor NCV, slight hyperalgesia, significant mechanical allodynia and clearing of myelinated fibers in the caudal nerves. After two weeks of follow up animals did not spontaneously recover functional, morphological and behavioral abnormalities while the 2 weeks-treatment with CR4056 (but not with gabapentine and buprenorphine) significantly resolved BTZ-induced mechanical allodynia. Results obtained show that CR4056 produces a marked analgesic effects against BTZ-induced neuropathic pain without signs of tolerance. Carozzi VA, Renn CL, Bardini M. et al. PLoS One. 2013; 8(9):e72995.
- Published
- 2013
21. Expression of TRPV1, CGRP and Substance P in spinal primary afferents neurons in a rat model of bortezomib-induced peripheral neuropathy
- Author
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Quartu, M, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, MEREGALLI, CRISTINA, CHIORAZZI, ALESSIA, MARMIROLI, PAOLA LORENA, CAVALETTI, GUIDO ANGELO, CAROZZI, VALENTINA ALDA, Quartu, M, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, Meregalli, C, Chiorazzi, A, Marmiroli, P, Cavaletti, G, and Carozzi, V
- Subjects
BORTEZOMIB, NEUROPATHY, NEUROPATHIC PAIN - Published
- 2012
22. Dietary essential oil components in the prevention of hypoperfusion/reperfusion-induced tissue damage in the rat cerebral cortex
- Author
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Melis, T., Serra, M.P., Boi, M., Poddighe, L., Picci, C., Del Fiacco, M., Carta, G., Murru, E., Lisai, S., Sirigu, A.R., Collu, M., Banni, S., and Quartu, M.
- Abstract
To extend our previous observations on the beneficial effect of dietary Pistacia lentiscus L. essential oil during cerebral bilateral common carotid artery occlusioninduced injury, we evaluated the activity of one of its major components, beta-caryophyllene (BCP), already known to possess peculiar biological activities, in Wistar rat cerebral cortex. Cerebral hypoperfusion was produced by a 30 min bilateral common carotid artery occlusion followed by 60 min reperfusion (BCCAO/R). Animals were starved for 12 hours before surgery and, 6 hours prior to hypoperfusion, BCP (40 mg/kg/0, 45 ml of sunflower oil as vehicle) was administered via gavage. Biological samples of brain tissue, plasma and cerebrospinal fluid (CSF) were examined by HPLC, western blot, gel zymography and immunohistochemistry and analyzed for fatty acids, expression of the enzyme ciclooxygenase-2 (COX-2), CB receptors for endocannabinoids (eCBs), and peroxisome proliferator-activated receptor (PPAR)-alpha and enzymatic activity of matrix-metalloprotease-9 (MMP9). Data obtained indicate that BCP appears to influence the outcome of BCCAO/R cerebral injury by modulating changes in levels of polyunsaturated fatty acids, biosynthesis of eCBs and eCB congeners, expression of CB1 and CB2 receptors, COX-2 protein levels and enzymatic activity of MMP9. Brain tissue response to the hypoperfusion/reperfusion-induced cerebral insult is modulated by dietary administration of BCP, suggesting the possible use of this molecule as nutritional treatment in neuroprevention. Work funded by Fondazione Banco di Sardegna., Italian Journal of Anatomy and Embryology, Vol 119, No 1 (Supplement) 2014
- Published
- 2015
- Full Text
- View/download PDF
23. Locus K: cuneate subnuclear regions in human dorsal column nuclei with neurochemical, cyto- and myeloarchitectural features of protopathic sensory nuclei
- Author
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Serra, M.P., Boi, M., Poddighe, L., Melis, T., Picci, C., Quartu, M., and Del Fiacco, M.
- Subjects
Dorsal column nuclei ,Sensory systems ,Human ,3D rendering ,Morphometry ,Neurochemistry ,nervous system - Abstract
This study is aimed to further characterize on a neurochemical, histological and morphometric ground the human Locus K, a newly identified region in the human nucleus cuneatus that shares neurochemical features with protopathic second order sensory nuclei (Del Fiacco et al., 2013; Serra et al., 2013). Human brainstem sections were observed by means of ABC immunohistochemistry for calcitonin gene-related peptide (CGRP), substance P (SP) and transient receptor potential vanilloid type-1 receptor (TRPV1), Kluver-Barrera, Black Gold kit II and Nissl staining followed by computerized analysis of cell size and density. As for CGRP and SP, at both pre- and postnatal age, immunoreactivity to TRPV1 occurs in Locus K with a distribution alike that present in the spinal trigeminal nucleus, caudal part. Morphometric analysis shows that, in adult tissue, the mean diameter and density of Nissl stained neurons in the Locus K are consistent with those of the caudal spinal trigeminal and solitary nuclei, and different from those in the gracile, cuneate and external cuneate nuclei. Kluver-Barrera and Black Gold kit II staining shows that myelinated fibres, abundant in the main cuneate, gracile and trigeminal magnocellular nuclei, are scarce in both the Locus K and trigeminal substantia gelatinosa. Immunohistochemical and cyto- and myeloarchitectural analysis uphold the parallel neurochemical and structural arrangement for Locus K and protopathic nuclei in the human medulla oblongata, and support the concept that Locus K represents a special component of the human dorsal column nuclei. Work funded by Fondazione Banco di Sardegna., Italian Journal of Anatomy and Embryology, Vol 119, No 1 (Supplement) 2014
- Published
- 2015
- Full Text
- View/download PDF
24. The rat dorsal column nuclei contain a region homologous to the human Locus K
- Author
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Quartu, M., Boi, M., Poddighe, L., Melis, T., Picci, C., Serra, M.P., and Del Fiacco, M.
- Subjects
Dorsal column nuclei ,Sensory systems ,Rat ,Morphometry ,Neurochemistry - Abstract
Locus K is a newly identified region within the territory of the human nucleus cuneatus that shares neurochemical and histological features with protopathic second order sensory nuclei (Del Fiacco et al., 2013; Serra et al., 2013; SIAI 2014). This work is aimed at examining the rat dorsal column nuclei in order to ascertain whether a structure homologous to the human Locus K occurs in the rat brain. Rat brainstem sections were observed by means of ABC and fluorescence immunohistochemistry for neuropeptides calcitonin gene-related peptide (CGRP) and substance P (SP), Kluver-Barrera and Nissl staining. Results of the peptide immunoreactive structures in the rat dorsal column nuclei are in general good agreement with findings in previous studies (Hoeflinger et al., 1993). However, at caudalmost levels of the complex, in the territory of the cuneate fascicle and dorsal to the caudal pole of the cuneate nucleus, a small column of gray matter area can be identified that contains a dense plexus of varicose labelled nerve fibres. The observed discrete region has never distinctly described beforehand. Both its position and aspect at neuropeptide-immunoreactivity resemble those of the Locus K we detected in the human dorsal column nuclei, allowing the possibility that it represents the its homologous nucleus in the rat brain. Work funded by Fondazione Banco di Sardegna., Italian Journal of Anatomy and Embryology, Vol 119, No 1 (Supplement) 2014
- Published
- 2015
- Full Text
- View/download PDF
25. Bed texture mapping in large rivers using recreational-grade sidescan sonar
- Author
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Hamill, D, primary, Wheaton, J, additional, Buscombe, D, additional, Grams, P, additional, and Melis, T, additional
- Published
- 2016
- Full Text
- View/download PDF
26. Valutazione dell'empatia e del coping degli infermieri di diabetologia in fase di aggiornamento
- Author
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Cirio, Luigi, Padovan, Anna, Novo, T, Trepiccioni, R, Facco, Simona, Faiuolo, D, Melis, T, and Dimonte, Valerio
- Subjects
Empatia ,infermieri ,Aggiornamento - Published
- 2013
27. Effect of acute administration of dietary Pistacia lentiscus L. essential oil on the ischemia-reperfusion-induced changes in rat frontal cortex and plasma
- Author
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Serra, M.P., Quartu, M., Boi, M., Pillolla, G., Melis, T., Poddighe, L., Del Fiacco, M., Falconieri, D., Carta, G., Piras, A., Murru, E., Collu, M., and Banni, S.
- Subjects
cerebral ischemia/reperfusion ,DHA ,COX-2 ,PEA ,OEA ,pistacia lentiscus L - Abstract
In this study Pistacia lentiscus L. essential oil (E.O.), a mixture of terpenes and sesquiterpenes, was tested for its protective effects in cerebral ischemia/reperfusion-induced injury in Wistar rat frontal cortex and plasma. Cerebral ischemia was produced by a 20 min bilateral common carotid artery occlusion followed by 30 min reperfusion. Pistacia lentiscus L. essential oil (E.O.) (200 mg/0, 45 ml of sunflower oil as vehicle) was administered via gavage 6 hours prior to ischemia. Rats were randomly assigned to four groups, ischemic/reperfused (I/R) and sham-operated rats treated with the vehicle or with E.O.. Different brain areas were analysed for fatty acid changes and expression of the enzyme cyclooxygenase-2 (COX-2). Ischemia/reperfusion triggered in frontal cortex a decrease of docosahexaenoic acid (DHA), the membrane highly polyunsaturated fatty acid (HPUFA) most susceptible to oxidation. Pre-treatment with E.O. prevented this change and led further to decreased levels of COX-2, as assessed by Western Blot. In plasma of ischemic/reperfused rats, E.O. administration increased both the DHA-to-eicosapentaenoic acid (EPA) ratio and levels of the endocannabinoid congeners palmytoylethanolamide (PEA) and oleoylethanolamide (OEA). The results obtained suggest that ischemia/reperfusion triggers a cerebral insult sufficient to cause a a region specific lipid peroxidation as evidenced by the detectable, significant decrease in the tissue level of DHA, the most abundant essential fatty acid of neuronal membrane phospholipids. Acute dietary pre-treatment with E.O. triggers modifications both in the frontal cortex, where COX-2 expression decreases and the decrease of DHA is apparently prevented, and in plasma, where PEA and OEA levels increase. We suggest that the activity of PEA and OEA, as endogenous ligands of the peroxisome proliferator-activated receptor (PPAR)-alpha, by inducing the peroxisomal beta oxidation, may explain the observed increase in the DHA/EPA ratio. The latter, in fact, might account for an increased metabolism of n-3 aimed at restoring DHA within damaged brain tissue. The possibility that changes in fatty acid metabolism and plasmatic availability of PEA and OEA are correlated events represents an issue worth future investigations., Italian Journal of Anatomy and Embryology, Vol 116, No 1 (Supplement) 2011
- Published
- 2011
- Full Text
- View/download PDF
28. Villacidro solar demo plant: Integration of small-scale CSP and biogas power plants in an industrial microgrid
- Author
-
Camerada, M., primary, Cau, G., additional, Cocco, D., additional, Damiano, A., additional, Demontis, V., additional, Melis, T., additional, and Musio, M., additional
- Published
- 2016
- Full Text
- View/download PDF
29. Progress in preliminary studies at Ottana Solar Facility
- Author
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Demontis, V., primary, Camerada, M., additional, Cau, G., additional, Cocco, D., additional, Damiano, A., additional, Melis, T., additional, and Musio, M., additional
- Published
- 2016
- Full Text
- View/download PDF
30. Adipogenic Differentiation of hMSCs is Mediated by Recruitment of IGF-1r Onto the Primary Cilium Associated With Cilia Elongation
- Author
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Dalbay, Melis T., primary, Thorpe, Stephen D., additional, Connelly, John T., additional, Chapple, J. Paul, additional, and Knight, Martin M., additional
- Published
- 2015
- Full Text
- View/download PDF
31. Disturbed adrenocortical function in cerebro-hepato-renal syndrome of Zellweger
- Author
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Govaerts, L., Monnens, L., Melis, T., and Trijbels, F.
- Published
- 1984
- Full Text
- View/download PDF
32. Bortezomib treatment produces nocifensive behavior and changes in the expression of TRPV1, CGRP, and substance P in the rat DRG, spinal cord, and sciatic nerve
- Author
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Quartu, M, Carozzi, V, Dorsey, S, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, Meregalli, C, Chiorazzi, A, Renn, C, Cavaletti, G, Marmiroli, P, CAROZZI, VALENTINA ALDA, MEREGALLI, CRISTINA, CHIORAZZI, ALESSIA, CAVALETTI, GUIDO ANGELO, MARMIROLI, PAOLA LORENA, Quartu, M, Carozzi, V, Dorsey, S, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, Meregalli, C, Chiorazzi, A, Renn, C, Cavaletti, G, Marmiroli, P, CAROZZI, VALENTINA ALDA, MEREGALLI, CRISTINA, CHIORAZZI, ALESSIA, CAVALETTI, GUIDO ANGELO, and MARMIROLI, PAOLA LORENA
- Abstract
To investigate neurochemical changes associated with bortezomib-induced painful peripheral neuropathy (PN), we examined the effects of a single-dose intravenous administration of bortezomib and a well-established "chronic" schedule in a rat model of bortezomib-induced PN. The TRPV1 channel and sensory neuropeptides CGRP and substance P (SP) were studied in L4-L5 dorsal root ganglia (DRGs), spinal cord, and sciatic nerve. Behavioral measures, performed at the end of the chronic bortezomib treatment, confirmed a reduction of mechanical nociceptive threshold, whereas no difference occurred in thermal withdrawal latency. Western blot analysis showed a relative increase of TRPV1 in DRG and spinal cord after both acute and chronic bortezomib administration. Reverse transcriptase-polymerase chain reaction revealed a decrease of TRPV1 and CGRP mRNA relative levels after chronic treatment. Immunohistochemistry showed that in the DRGs, TRPV1-, CGRP-, and SP-immunoreactive neurons were mostly small- and medium-sized and the proportion of TRPV1- and CGRP-labeled neurons increased after treatment. A bortezomib-induced increase in density of TRPV1- and CGRP-immunoreactive innervation in the dorsal horn was also observed. Our findings show that bortezomib-treatment selectively affects subsets of DRG neurons likely involved in the processing of nociceptive stimuli and that neurochemical changes may contribute to development and persistence of pain in bortezomib-induced PN.
- Published
- 2014
33. Effect of the neuropeptides vasoactive intestinal peptide, peptide histidine methionine and substance P on human major salivary gland secretion
- Author
-
Del Fiacco, M, primary, Quartu, M, additional, Ekström, J, additional, Melis, T, additional, Boi, M, additional, Isola, M, additional, Loy, F, additional, and Serra, MP, additional
- Published
- 2014
- Full Text
- View/download PDF
34. Imidazoline Receptor 2 is an Effective Target for Neuropathic Pain in a Murine Model of Bortezomib-Induced Peripheral Neuropathy
- Author
-
Carozzi, V, Canta, A, Chiorazzi, A, Sala, B, Oggioni, N, Lanza, M, Quartu, M, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, Caselli, G, CAROZZI, VALENTINA ALDA, CANTA, ANNALISA ROSANNA, CHIORAZZI, ALESSIA, SALA, BARBARA, OGGIONI, NORBERTO, Caselli, G., Carozzi, V, Canta, A, Chiorazzi, A, Sala, B, Oggioni, N, Lanza, M, Quartu, M, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, Caselli, G, CAROZZI, VALENTINA ALDA, CANTA, ANNALISA ROSANNA, CHIORAZZI, ALESSIA, SALA, BARBARA, OGGIONI, NORBERTO, and Caselli, G.
- Abstract
Bortezomib (BTZ) is a proteasome inhibitor used as first-line therapy for multiple myeloma. However, its administration induces the development of severe painful peripheral neuropathy (PPN). This painful condition is an important medical need since the available treatments are actually ineffective. We recently described a mice model of PPN that shares most of the conditions found in patients treated chronically with BTZ (Carozzi et al., 2013). In fact, BTZ determines dysfunction of all fiber types in sensory nerves and, at least in mice, alters the electrical activity of the spinal dorsal horn neurons. This alteration of the basal electrophysiological activity induces also relevant changes in the central nociceptive transmission. In this work we characterize the neuroprotective effects of an imidazoline receptor 2 ligand (CR4056) able to allosterically inhibit the activity of monoamine oxidase-A, a key enzyme in the regulation of neuropathic pain. Wistar rats were treated with BTZ 0.20 mg/kg, 3 times a week for 8 weeks (i.v). Then CR4056 was orally administered in a curative schedule at 6 mg/kg, once a day, for 2 weeks. Gabapentin (100 mg/kg, daily, p.o.) and buprenorphine (28,8µg/kg, daily, s.c.) were used as internal analgesic standards. At the end of both BTZ and analgesic treatments, we measured the caudal and sciatic nerve conduction velocity (NCV), the morphological/morphometrical alterations in the caudal nerve and the neuropathic pain development. BTZ treatment induced a significant impairment of sensory, but not motor NCV, slight hyperalgesia, significant mechanical allodynia and clearing of myelinated fibers in the caudal nerves. After two weeks of follow up animals did not spontaneously recover functional, morphological and behavioral abnormalities while the 2 weeks-treatment with CR4056 (but not with gabapentine and buprenorphine) significantly resolved BTZ-induced mechanical allodynia. Results obtained show that CR4056 produces a marked analgesic effect
- Published
- 2013
35. Bortezomib Treatment Produces Nocifensive Behavior and Changes in the Expression of TRPV1, CGRP, and Substance P in the Rat DRG, Spinal Cord, and Sciatic Nerve
- Author
-
Quartu, M., primary, Carozzi, V. A., additional, Dorsey, S. G., additional, Serra, M. P., additional, Poddighe, L., additional, Picci, C., additional, Boi, M., additional, Melis, T., additional, Del Fiacco, M., additional, Meregalli, C., additional, Chiorazzi, A., additional, Renn, C. L., additional, Cavaletti, G., additional, and Marmiroli, P., additional
- Published
- 2014
- Full Text
- View/download PDF
36. HIZLI MODA MARKALARINDA ÇEVİK VE ESNEK TEDARİK ZİNCİRİ YÖNETİMİ.
- Author
-
ÇALIŞKAN, Aylin, KARACASULU, Melis T., and ÖZTÜRKOĞLU, Yücel
- Abstract
In today's highly competitive business world, companies have started to pay particular attention to supply chain management for achieving sustainability. When individual businesses within a supply chain act like one unified company, costs decrease, uncertainities are removed and companies increase their competitive advantage. Recently, the fashion and ready to wear industry have moved towards a fast fashion structure by adding new collections in the middle of the season in order to offer more alternatives to the customers. As a consequence, customers are offered lower prices whereas quantity of sales, profits and brand awareness increase. This study offers a novel research model on the relationship between the agility and flexibility dimensions of supply chain management and fast fashion firm performance, and all the hypotheses are tested through multiple regression analysis. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
37. Early-Stage Inflammation and Experimental Therapy in Transgenic Models of the Alzheimer-Like Amyloid Pathology
- Author
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Cuello, A.C., primary, Ferretti, M.T., additional, Leon, W.C., additional, Iulita, M.F., additional, Melis, T., additional, Ducatenzeiler, A., additional, Bruno, M.A., additional, and Canneva, F., additional
- Published
- 2010
- Full Text
- View/download PDF
38. Sustainability of western North American hydrosystems: Use-inspired research to understand nonstationary climate, flow regulation, and ecological flows needs
- Author
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Jain, Shaleen, primary, Chandler, J, additional, Eischeid, J, additional, Pulwarty, R, additional, Melis, T, additional, and Topping, D, additional
- Published
- 2009
- Full Text
- View/download PDF
39. Glasaardbei : verwarmde doorteelt is spel tussen licht en hormonen
- Author
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Melis, T. and Melis, T.
- Published
- 1997
40. Aardbei : aan de basis van het trayplant succes
- Author
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Melis, T. and Melis, T.
- Published
- 1995
41. Cosmogonic ^3He ages and frequency of late holocene debris flows from Prospect Canyon, Grand Canyon, USA
- Author
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Cerling, T. E., Webb, R. H., Poreda, R. J., Rigby, A. D., and Melis, T. S.
- Published
- 1999
- Full Text
- View/download PDF
42. The Relationship between the Expression of the Mitochondrial Genome and Plasma Membrane Properties in Thymocytes and Leukemic Cells in the Rat
- Author
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BOGERT, C., primary, KUZELA, S., additional, MELIS, T., additional, and KROON, A. M., additional
- Published
- 1986
- Full Text
- View/download PDF
43. Mitochondrial Biogenesis During the Activation of Lymphocytes by Mitogens: The Immunosuppressive Action of Tetracyclines
- Author
-
Van den Bogert, C, primary, Melis, T E, additional, and Kroon, A M, additional
- Published
- 1989
- Full Text
- View/download PDF
44. Polysialylated-neural cell adhesion molecule (PSA-NCAM) in the human trigeminal ganglion and brainstem at prenatal and adult ages.
- Author
-
Quartu M, Serra MP, Boi M, Ibba V, Melis T, and Del Fiacco M
- Abstract
The polysialylated neuronal cell adhesion molecule (PSA-NCAM) is considered a marker of developing and migrating neurons and of synaptogenesis in the immature vertebrate nervous system. However, it persists in the mature normal brain in some regions which retain a capability for morphofunctional reorganization throughout life. With the aim of providing information relevant to the potential for dynamic changes of specific neuronal populations in man, this study analyses the immunohistochemical occurrence of PSA-NCAM in the human trigeminal ganglion (TG) and brainstem neuronal populations at prenatal and adult age.~Background~Background~Western blot analysis in human and rat hippocampus supports the specificity of the anti-PSA-NCAM antibody and the immunodetectability of the molecule in postmortem tissue. Immunohistochemical staining for PSA-NCAM occurs in TG and several brainstem regions during prenatal life and in adulthood. As a general rule, it appears as a surface staining suggestive of membrane labelling on neuronal perikarya and proximal processes, and as filamentous and dot-like elements in the neuropil. In the TG, PSA-NCAM is localized to neuronal perikarya, nerve fibres, pericellular networks, and satellite and Schwann cells; further, cytoplasmic perikaryal staining and positive pericellular fibre networks are detectable with higher frequency in adult than in newborn tissue. In the adult tissue, positive neurons are mostly small- and medium-sized, and amount to about 6% of the total ganglionic population. In the brainstem, PSA-NCAM is mainly distributed at the level of the medulla oblongata and pons and appears scarce in the mesencephalon. Immunoreactivity also occurs in discretely localized glial structures. At all ages examined, PSA-NCAM occurs in the spinal trigeminal nucleus, solitary nuclear complex, vestibular and cochlear nuclei, reticular formation nuclei, and most of the precerebellar nuclei. In specimens of different age, the distribution pattern remains fairly steady, whereas the density of immunoreactive structures and the staining intensity may change and are usually higher in newborn than in adult specimens.~Results~Results~The results obtained show that, in man, the expression of PSA-NCAM in selective populations of central and peripheral neurons occurs not only during prenatal life, but also in adulthood. They support the concept of an involvement of this molecule in the structural and functional neural plasticity throughout life. In particular, the localization of PSA-NCAM in TG primary sensory neurons likely to be involved in the transmission of protopathic stimuli suggests the possible participation of this molecule in the processing of the relevant sensory neurotransmission.~Conclusion~Conclusions [ABSTRACT FROM AUTHOR]
- Published
- 2008
45. Villacidro Solar Demo Plant: Integration of Small-Scale CSP and Biogas Power Plants in an Industrial Microgrid
- Author
-
Giorgio Cau, Valeria Demontis, T. Melis, Daniele Cocco, Alfonso Damiano, M. Camerada, Monica Musio, Camerada, M., Cau, G., Cocco, D., Damiano, A., Demontis, Valeria, Melis, T., and Musio, M.
- Subjects
Engineering ,Waste management ,Power station ,business.industry ,Distributed generation ,Microgrid ,business ,Process engineering ,Solar energy ,Dispatchable generation ,Thermal energy storage ,Solar power ,Renewable energy - Abstract
The integration of small scale concentrating solar power (CSP) in an industrial district, in order to develop a microgrid fully supplied by renewable energy sources, is presented in this paper. The plant aims to assess in real operating conditions, the performance, the effectiveness and the reliability of small-scale concentrating solar power technologies in the field of distributed generation. In particular, the potentiality of small scale CSP with thermal storage to supply dispatchable electricity to an industrial microgrid will be investigated. The microgrid will be realized in the municipal waste treatment plant of the Industrial Consortium of Villacidro, in southern Sardinia (Italy), which already includes a biogas power plant. In order to achieve the microgrid instantaneous energy balance, the analysis of the time evolution of the waste treatment plant demand and of the generation in the existing power systems has been carried out. This has allowed the design of a suitable CSP plant with thermal storage and an electrochemical storage system for supporting the proposed microgrid. At the aim of obtaining the expected energy autonomy, a specific Energy Management Strategy, which takes into account the different dynamic performances and characteristics of the demand and the generation, has been designed. In this paper, the configuration of the proposed small scale concentrating solar power (CSP) and of its thermal energy storage, based on thermocline principle, is initially described. Finally, a simulation study of the entire power system, imposing scheduled profiles based on weather forecasts, is presented.
- Published
- 2016
46. Progress in preliminary studies at Ottana Solar facility
- Author
-
Giorgio Cau, M. Camerada, Valeria Demontis, T. Melis, Daniele Cocco, Alfonso Damiano, Monica Musio, Demontis, Valeria, Camerada, M., Cau, G., Cocco, D., Damiano, A., Melis, T., and Musio, M.
- Subjects
Photovoltaic thermal hybrid solar collector ,Engineering ,business.industry ,Distributed generation ,Photovoltaic system ,Systems engineering ,Grid-connected photovoltaic power system ,Mechanical engineering ,business ,Solar energy ,Grid parity ,Solar power ,Renewable energy - Abstract
The fast increasing share of distributed generation from non-programmable renewable energy sources, such as the strong penetration of photovoltaic technology in the distribution networks, has generated several problems for the management and security of the whole power grid. In order to meet the challenge of a significant share of solar energy in the electricity mix, several actions aimed at increasing the grid flexibility and its hosting capacity, as well as at improving the generation programmability, need to be investigated. This paper focuses on the ongoing preliminary studies at the Ottana Solar Facility, a new experimental power plant located in Sardinia (Italy) currently under construction, which will offer the possibility to progress in the study of solar plants integration in the power grid. The facility integrates a concentrating solar power (CSP) plant, including a thermal energy storage system and an organic Rankine cycle (ORC) unit, with a concentrating photovoltaic (CPV) plant and an electrical energy storage system. The facility has the main goal to assess in real operating conditions the small scale concentrating solar power technology and to study the integration of the two technologies and the storage systems to produce programmable and controllable power profiles. A model for the CSP plant yield was developed to assess different operational strategies that significantly influence the plant yearly yield and its global economic effectiveness. In particular, precise assumptions for the ORC module start-up operation behavior, based on discussions with the manufacturers and technical datasheets, will be described. Finally, the results of the analysis of the: “solar driven”, “weather forecasts” and “combined storage state of charge (SOC)/ weather forecasts” operational strategies will be presented.
- Published
- 2016
47. Bortezomib treatment produces nocifensive behavior and changes in the expression of TRPV1, CGRP, and substance P in the rat DRG, spinal cord, and sciatic nerve
- Author
-
Guido Cavaletti, M. Del Fiacco, Cristina Meregalli, Cl Renn, Sg Dorsey, Marina Quartu, Marianna Boi, Laura Poddighe, Va Carozzi, Alessia Chiorazzi, Cristina Picci, Maria Pina Serra, Tiziana Melis, Paola Marmiroli, Quartu, M, Carozzi, V, Dorsey, S, Serra, M, Poddighe, L, Picci, C, Boi, M, Melis, T, Del Fiacco, M, Meregalli, C, Chiorazzi, A, Renn, C, Cavaletti, G, and Marmiroli, P
- Subjects
Nociception ,medicine.medical_specialty ,Article Subject ,Calcitonin Gene-Related Peptide ,TRPV1 ,TRPV Cation Channels ,lcsh:Medicine ,Nerve Tissue Proteins ,Substance P ,Calcitonin gene-related peptide ,General Biochemistry, Genetics and Molecular Biology ,Bortezomib ,chemistry.chemical_compound ,Neurochemical ,BIO/16 - ANATOMIA UMANA ,Ganglia, Spinal ,Internal medicine ,hemic and lymphatic diseases ,Animals ,Medicine ,Rats, Wistar ,bortezomib, immunoistochemistry ,Behavior, Animal ,General Immunology and Microbiology ,business.industry ,lcsh:R ,Peripheral Nervous System Diseases ,General Medicine ,Spinal cord ,medicine.disease ,Boronic Acids ,Sciatic Nerve ,Rats ,Disease Models, Animal ,Endocrinology ,medicine.anatomical_structure ,Peripheral neuropathy ,Gene Expression Regulation ,Spinal Cord ,chemistry ,nervous system ,Pyrazines ,Anesthesia ,Female ,Sciatic nerve ,business ,Research Article - Abstract
To investigate neurochemical changes associated with bortezomib-induced painful peripheral neuropathy (PN), we examined the effects of a single-dose intravenous administration of bortezomib and a well-established “chronic” schedule in a rat model of bortezomib-induced PN. The TRPV1 channel and sensory neuropeptides CGRP and substance P (SP) were studied in L4-L5 dorsal root ganglia (DRGs), spinal cord, and sciatic nerve. Behavioral measures, performed at the end of the chronic bortezomib treatment, confirmed a reduction of mechanical nociceptive threshold, whereas no difference occurred in thermal withdrawal latency. Western blot analysis showed a relative increase of TRPV1 in DRG and spinal cord after both acute and chronic bortezomib administration. Reverse transcriptase-polymerase chain reaction revealed a decrease of TRPV1 and CGRP mRNA relative levels after chronic treatment. Immunohistochemistry showed that in the DRGs, TRPV1-, CGRP-, and SP-immunoreactive neurons were mostly small- and medium-sized and the proportion of TRPV1- and CGRP-labeled neurons increased after treatment. A bortezomib-induced increase in density of TRPV1- and CGRP-immunoreactive innervation in the dorsal horn was also observed. Our findings show that bortezomib-treatment selectively affects subsets of DRG neurons likely involved in the processing of nociceptive stimuli and that neurochemical changes may contribute to development and persistence of pain in bortezomib-induced PN.
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- 2014
48. Energy, Forest, and Indoor Air Pollution Models for Sagarmatha National Park and Buffer Zone, Nepal Implementation of a Participatory Modeling Framework
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Fabrizio Cartenì, Maria Teresa Melis, Francesco Giannino, Sandeep Shrestha, Franco Salerno, Marco Carrer, Rojan Kumar Pandey, Annalisa Cogo, Sudeep Thakuri, Silu Bhochhibhoya, Sanjay Nath Khanal, Stefano Mazzoleni, Dinesh Raj Bhuju, Atindra Sapkota, Emanuela Chiara Manfredi, Anna Staiano, Ramesh Kumar Maskey, Bastian Flury, Gaetano Viviano, Salerno, F, Viviano, G, Thakuri, S, Flury, B, Maskey, Rk, Khanal, Sn, Bhuju, D, Carrer, M, Bhochhibhoya, S, Melis, T, Giannino, Francesco, Staiano, A, Carteni', Fabrizio, Mazzoleni, Stefano, Cogo, A, Sapkota, A, Shrestha, S, Pandey, Rk, and Manfredi, Ec
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system dynamic ,Buffer zone ,indoor air pollution ,Sagarmatha National Park and Buffer Zone ,energy management ,business.industry ,National park ,Energy management ,Simulation modeling ,Forest management ,Environmental resource management ,forest management ,Participatory modeling ,Development ,Adaptive management ,Indoor air quality ,Nepal ,Environmental protection ,Environmental Chemistry ,Environmental science ,business ,General Environmental Science - Abstract
This paper presents the results of management-oriented research on energy, forest, and human health issues in a remote mountain area, the Sagarmatha National Park and Buffer Zone (SNPBZ), Nepal. The research was based on a broader, integrated participatory framework ultimately intended for use in adaptive management. The present study focused on the application of a participatory modeling framework to address problems related to energy demand and consumption, forest condition, and indoor air pollution, which were defined by the stakeholders as important issues to be addressed. The models were developed using a generalizing design that allows for user-friendly adaptation to other contexts (free download at http://hkkhpartnership.org). Moreover, we simulated management scenarios in collaboration with all modeling actors with the aim of building consensus on the understanding of the system as well as supporting decision-makers' capacity not only to respond to changes, but also to anticipate them. Importantly, the system dynamics assessment found that the SNPBZ forests are affected by an increasing demand for fuelwood (occurring due to tourism growth), as one of the main sources of energy. Selected forests show an average reduction of 38% in forest biomass from 1992 to 2008. This shows that the business-as-usual scenario is unlikely to result in the preservation of the current forest status; in fact, such preservation would require 75% of fuelwood to be replaced with alternative energy sources. At the same time, a 75% reduction of fuelwood use (and an 80% reduction of dung use) would reduce indoor carbon monoxide (CO) concentrations to the standard limits for CO exposure set by the World Health Organization.
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- 2010
49. Clinical vitamin A deficiency among preschool aged children in southwest Ethiopia.
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Nuredin A, Melis T, and Abdu AO
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Background: The clinical manifestations of vitamin A deficiency (VAD) involve night blindness, bitot's spots, corneal xerosis, and corneal scars. It is the most important cause of preventable childhood blindness among children and causes morbidity and mortality. Even though Ethiopia implemented high-potency vitamin A supplements, the occurrence of VAD remains significant. This study was to identify determinants of clinical VAD among preschool-aged children (PSC) in southwest Ethiopia., Method: A community-based survey was conducted among 411 randomly selected PSCs. A pretested and structured questionnaire coupled with clinical observation for signs of vitamin A deficiency by a trained ophthalmologist was used to collect the data. An anthropometric measurement of height was taken and analyzed using WHO Anthro to calculate Z-scores for each index. The public health significance of VAD was declared after comparison with international references. A bi-variable and multi-variable logistic analysis was done. We reported the adjusted odds ratio (AOR), 95% confidence interval, and p -value., Result: A total of 411 children were screened for clinical VAD, and the overall prevalence was 2.2% (95% CI: 1.5-2.5). Of which, night blindness affects 1.2%, bitot's spots affects 0.7%, and corneal xerosis affects 0.2%, indicating a major public health problem compared to the international reference. The odds of clinical VAD were 81% lower among children who received vitamin A supplementation (VAS; AOR = 0.19, 95% CI: 0.04-0.92). On the other hand, PSC of mothers who had attended ANC visits were 89% less likely to develop clinical VAD (AOR = 0.11, 95% CI: 0.02-0.53). In addition, the study revealed that the odds of developing clinical VAD are 82% lower among PSC aged 36 to 47 months (AOR = 0.18; 95% CI: 0.03-0.97)., Conclusion: The prevalence of clinical VAD among PSC is a public health problem and is associated with ANC visits, VAS status, and the age of the child, which could be used to target interventions to further reduce existing VAD. Further studies using reliable dietary intake and biomarker data could further depict the burden of subclinical VAD., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Nuredin, Melis and Abdu.)
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- 2024
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50. Compliance towards WHO recommendations on antenatal care for a positive pregnancy experience: Timeliness and adequacy of antenatal care visit in Sub-Saharan African countries: Evidence from the most recent standard Demographic Health Survey data.
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Habte A, Tamene A, and Melis T
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- Pregnancy, Female, Humans, Health Surveys, Birth Order, Africa South of the Sahara epidemiology, Prenatal Care, Patient Acceptance of Health Care
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Background: Timely and adequate antenatal care (ANC) visits are known to reduce maternal mortality by 20%. Despite the World Health Organization updating its recommendations from four to eight antenatal care contacts, data reporting in the SSA region focused primarily on four visits, and evidence on the timing and adequacy of ANC based on the current recommendation was limited. Hence, this study aimed at assessing the level of timely and adequate ANC visits and their determinants in the 18 Sub-Saharan African countries with the most recent DHS report (2016-2021)., Methods: The data for this study were pooled from the most recent standardized Demographic and Health Survey data of sub-Saharan African countries from 2016-2021. A total of 171,183 (with a weighted frequency of 171,488) women were included and analyzed by using STATA version 16. To account for data clustering, a multivariable multilevel mixed-effect logistic regression analysis was run to determine the effects of each predictor on the receipt of timely and adequate ANC. Adjusted odds ratio with its corresponding 95% confidence interval was used to declare the statistical significance of the independent variables., Results: The receipt of timely and adequate antenatal care visits was 41.2% (95% CI: 40.9, 41.4) and 10.4% (95% CI: 9.9, 10.2), respectively. Wontedness of pregnancy [AOR = 1.18; 95% CI: 1.13, 1.24], being 1st birth order [AOR = 1.48; 95% CI: 1.41, 2.54], having a mobile phone [AOR = 1.49; 95% CI: 1.26, 2.32], and enrolled in Health insurance schemes [AOR = 2.03; 95% CI: 1.95, 2.42] were significantly associated with early initiation of ANC. Living in a lower community poverty level[AOR = 2.23; 95% CI: 1.90,2.66], being in the richest wealth quintile [AOR = 1.49; 95% CI: 1.36, 1.62], higher educational level [AOR = 3.63; 95% CI: 3.33, 3.96], the timing of ANC visit [AOR = 4.26; 95% CI: 4.08, 4.44], being autonomous in decision making [AOR = 2.29; 95% CI: 1.83, 2.54] and having a mobile phone [AOR = 1.89; 95% CI: 1.76, 2.52] were identified as significant predictors of adequate ANC uptake., Conclusion: The findings revealed a low coverage of timely and adequate ANC visits in SSA countries. Governments and healthcare managers in sub-Saharan African countries should leverage their efforts to prioritize and implement activities and interventions that increase women's autonomy, and economic capability, to improve their health-seeking behavior during pregnancy. More commitment is needed from governments to increase mobile phone distribution across countries, and then work on integrating mHealth into their health system. Finally, efforts should be made to increase the coverage of health insurance schemes enrolment for the citizens., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Habte et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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- View/download PDF
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