Medical Science Monitor Basic Research最新文献

{"title":"Role of Calcium/Creatinine Ratio in Urine Compared with Proteinuria and Uric Acid in Predicting Preeclampsia: A Study from Kosovo.","authors":"Lindita Ibrahimi, Myrvete Paçarada, Syheda Latifi Hoxha, Astrit Bimbashi, Vlora Ademi Ibishi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>BACKGROUND Preeclampsia is a common complication of pregnancy and a major cause of morbidity and mortality of mothers and babies worldwide. This study aimed to explore what the role of calcium/creatinine ratio is in urine compared with proteinuria and uric acid in predicting preeclampsia. MATERIAL AND METHODS In this prospective case-control study, 200 pregnant women who participated in the study were consecutively divided into 3 groups: a group of 59 women with preeclampsia, 61 women with pregnancy-induced hypertension, and a control group of 80 normotensive pregnant women. A 24-h urine sample was collected for estimation of calcium/creatinine ratio and proteinuria and a blood sample for estimation of uric acid at a gestational age of 24-34 weeks of pregnancy. RESULTS The study found that the sensitivity of proteinuria as a predictor of preeclampsia was 96.6% (P=0.000) and specificity was 21.3%. The sensitivity of uric acid as a predictor was 96.6% (P=0.000) and the specificity was 48.8%; whereas for the 24-h urine calcium/creatinine ratio, the sensitivity was 87.9% (P=0.000) and the specificity 40.7%, which corresponds to a value of 0.105 (cutoff). Women with a calcium/creatinine ratio <0.105 have a higher risk of developing preeclampsia (87.9% confidence interval, P=0.000). CONCLUSIONS The role of the calcium/creatinine ratio in urine is inferior to proteinuria and uric acid in predicting preeclampsia.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"27 ","pages":"e929845"},"PeriodicalIF":1.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7934340/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25413302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship Between Composition of Fatty Acid in Platelet Phospholipid Membrane and Markers of Oxidative Stress in Healthy Men and Men After a Myocardial Infarction.","authors":"Inga Bikulčienė,&nbsp;Neda Garjonytė,&nbsp;Vytautas Žėkas,&nbsp;Rėda Matuzevičienė,&nbsp;Živilė Žymantienė,&nbsp;Aldona Baublytė,&nbsp;Vaiva Hendrixson,&nbsp;Dovilė Karčiauskaitė,&nbsp;Algirdas Utkus,&nbsp;Arvydas Kaminskas","doi":"10.12659/MSMBR.929634","DOIUrl":"https://doi.org/10.12659/MSMBR.929634","url":null,"abstract":"<p><p>BACKGROUND Oxidative stress (OS) is known to be extremely damaging for phospholipids in cell membranes, especially their polyunsaturated fatty acids (PUFAs). OS is known to be associated with increased platelet activation and thrombosis, which lead to cardiovascular lesions. The aim of this study was to investigate how changes in the composition of fatty acids (FAs) in the platelet phospholipid membrane correlate with OS in healthy men and in men who have experienced a myocardial infarction (post-MI men). MATERIAL AND METHODS FA methyl esters from the platelet phospholipid membrane of 79 apparently healthy and 20 post-MI men were identified using gas chromatography/mass spectrometry. Malondialdehyde (MDA) was measured in the blood serum using high-performance liquid chromatography, and platelet-white blood cell aggregates (PWAs) were analysed based on whole-blood flow cytometry. The composition of platelet membrane FAs was compared to MDA concentration (µg/l) and the percentage of PWA formation between healthy men and individuals who had suffered a myocardial infarction (MI). RESULTS Statistically, post-MI patients had a significantly higher concentration of blood serum MDA than those in the control group (p=0.000). The level of PUFAs was also higher in the platelet phospholipid membrane of post-MI patients than in healthy individuals (p=0.016). However, the percentage of PWA formation was lower in patients compared with the control group (p<0.05). CONCLUSIONS A higher level of blood serum MDA concentration due to OS stimulates platelets to incorporate more PUFAs into the phospholipid membrane, thereby affecting platelet activation. This may lead the individual to develop cardiovascular diseases in the future.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"27 ","pages":"e929634"},"PeriodicalIF":2.8,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a2/7b/medscimonitbasicres-27-e929634.PMC7893829.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25367241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Levels of Lactate, Troponin, and N-Terminal Pro-B-Type Natriuretic Peptide Are Predictors of Mortality in Patients with Sepsis and Septic Shock: A Retrospective Cohort Study.","authors":"Harith Alataby, Jay Nfonoyim, Keith Diaz, Amna Al-Tkrit, Shahnaz Akhter, Sharoon David, Vishnuveni Leelaruban, Kara S Gay-Simon, Vedatta Maharaj, Bruce Colet, Cherry Hanna, Cheryl-Ann Gomez","doi":"10.12659/MSMBR.927834","DOIUrl":"10.12659/MSMBR.927834","url":null,"abstract":"<p><p>BACKGROUND Serum lactate, troponin, and N-terminal pro-B-type natriuretic peptide (NT-proBNP) have been proposed to be useful prognostic indicators in patients with sepsis and septic shock. This study aimed to evaluate the predictive ability of these biomarkers and assess how their prognostic utility may be improved by using them in combination. MATERIAL AND METHODS A retrospective review of the medical records of 1242 patients with sepsis and septic shock who were admitted to the Richmond University Medical Center between June 1, 2018, and June 1, 2019, was carried out; 427 patients met the study criteria and were included in the study. The primary outcome measures included 30-day mortality, APACHE II scores, length of hospital stay, and admission to the Medical Intensive Care Unit (MICU). RESULTS High levels of lactate (>4 mmol/L), troponin (>0.45 ng/mL), and NT-proBNP (>8000 pg/mL) were independent predictors of 30-day mortality, with an adjusted odds ratio of mortality being 3.19 times, 2.13 times, and 2.5 times higher, respectively, compared with corresponding reference groups, at 95% confidence intervals. Elevated levels of lactate, troponin, and NT-proBNP were associated with 9.12 points, 7.70 points, and 8.88 points in higher APACHE II scores, respectively. Only elevated troponin levels were predictive of a longer length of hospital stay. In contrast, elevated lactate and troponin were associated with an increased chance of admission to the MICU. CONCLUSIONS Elevated levels of serum lactate, troponin, and NT-proBNP are independent predictors of mortality and higher APACHE II scores in patients with sepsis and septic shock.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"27 ","pages":"e927834"},"PeriodicalIF":1.5,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c1/a1/medscimonitbasicres-27-e927834.PMC7863562.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25313899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Examining the Beneficial Aspects of Nutritional Guidance Using Estimated Daily Salt Intake in Cancer Patients with Ischemic Heart Disease.","authors":"Takashi Aoyama, Takuya Oyakawa, Akifuimi Notsu, Emi Oiyama, Masao Hashimoto, Reiko Suzuki, Kei Iida","doi":"10.12659/MSMBR.927719","DOIUrl":"10.12659/MSMBR.927719","url":null,"abstract":"<p><p>BACKGROUND The outcomes associated with nutritional guidance for patients with ischemic heart disease undergoing cancer treatment have not been explored. We examined the effects of nutritional guidance using estimated daily salt intake in cancer patients with ischemic heart disease. MATERIAL AND METHODS We examined the data from physical examinations and laboratory assessments of 27 patients with suspected excessive salt intake who underwent coronary angiography for the first time and received nutritional guidance on their next visit to the Department of Cardiology of Shizuoka Cancer Center between May 2018 and March 2020. Salinity measurement was not used in the nutritional guidance method, but the patients were instructed to reduce consumption of salt-containing foods. We compared the frequency of the estimated daily salt intake with the frequency of categories requiring salt control (food, cooking, and table salts). RESULTS The median age of the participants was 74 (range, 63-86) years. The estimated daily salt intake and the rate of change in the triglyceride level were negatively correlated (r=-0.61, P<0.01). The estimated daily salt intake was reduced in 16 cases; there was a relative decrease in the frequency of food intake among categories requiring salt control compared with that in the nonimproved cases (P<0.01). No difference was found between the cancer stage and the affected site of the digestive system in either group (P=0.64, P=0.39). CONCLUSIONS Nutritional guidance on dietary habits without using salinity measurement was beneficial in preventing ischemic heart disease and food intake reduction in cancer patients.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"27 ","pages":"e927719"},"PeriodicalIF":1.5,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/2a/0a/medscimonitbasicres-27-e927719.PMC7834217.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38832525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cytotoxicity and Antiplasmodial Properties of Different Hylocereus polyrhizus Peel Extracts","authors":"R. Hendra, Rohimatul Khodijah, R. Putri, Riezki Amalia, Y. Haryani, H. Y. Teruna, R. Abdulah","doi":"10.12659/MSMBR.931118","DOIUrl":"https://doi.org/10.12659/MSMBR.931118","url":null,"abstract":"Background Dragon fruit (Hylocereus polyrhizus) is one of the most common fruits in tropical countries, including Indonesia. The unique deep purple-colored pulp of the fruit is eaten whole and consumed as juice. However, the inedible thick peel is wasted, causing environmental issues. In this study, the toxic, cytotoxic, and antiplasmodium activity from various extract of H. polyrhizus peels were examined. Material/Methods We evaluated the cytotoxicity and antiplasmodial properties of the various peel extracts by using different organic solvents.The extraction of the peels was conducted using maceration to obtain pigment, n-hexane, dichloromethane, and ethyl acetate extracts. The toxicity of the extract was assessed using the brine shrimp lethality test, followed by WST assay to test in vitro cytotoxic properties and in vitro antiplasmodial properties in 2 Plasmodium falciparum strains (3D7 and W2). Results The n-hexane, dichloromethane, and ethyl acetate extracts depicted various levels of activity, whereas the pigment extract did not show any activities. However, dichloromethane demonstrated a high toxicity level with LC50 of 10.32±0.13 μg/mL and a weak cytotoxic level against SK-OV-3 cell lines (IC50 of 560.86±0.63 μg/mL). Moreover, the dichloromethane and n-hexane extracts showed high and promising antiplasmodial activity with IC50 2.13±0.42 and 6.51±0.49 μg/mL, respectively. Conclusions The dichloromethane extract demonstrated high antiplasmodial activity. Our observations have elucidated the cytotoxic and antiplasmodial activity of the peel of dragon fruits and can be used as a foundation for further research into the isolation and bioactivity of secondary metabolites.","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"11 1","pages":"e931118-1 - e931118-6"},"PeriodicalIF":2.8,"publicationDate":"2021-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86997778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Southeast Asian Perspective on the COVID-19 Pandemic: Hemoglobin E (HbE)-Trait Confers Resistance Against COVID-19.","authors":"Konstantinos I Papadopoulos,&nbsp;Warachaya Sutheesophon,&nbsp;Somjate Manipalviratn,&nbsp;Tar-Choon Aw","doi":"10.12659/MSMBR.929207","DOIUrl":"https://doi.org/10.12659/MSMBR.929207","url":null,"abstract":"<p><p>As of November 25, 2020, over 60 million people have been infected worldwide by COVID-19, causing almost 1.43 million deaths. Puzzling low incidence numbers and milder, non-fatal disease have been observed in Thailand and its Southeast (SE) Asian neighbors. Elusive genetic mechanisms might be operative, as a multitude of genetic factors are widely shared between the SE Asian populations, such as the more than 60 different thalassemia syndromes (principally dominated by the HbE trait). In this study, we have plotted COVID-19 infection and death rates in SE Asian (SEA) countries against heterozygote HbE and thalassemia carrier prevalence. COVID-19 infection and death incidence numbers appear inversely correlated with the prevalence of HbE and thalassemia heterozygote populations. We posit that the evolutionary protective effect of the HbE and other thalassemic variants against malaria and the dengue virus may extend its advantage to resistance to COVID-19 infection, as HbE heterozygote population prevalence appears to be positively correlated with immunity to COVID-19. Host immune system modulations induce antiviral interferon responses and alter structural protein integrity, thereby inhibiting cellular access and viral replication. These changes are possibly engendered by HbE carrier miRNAs. Proving this hypothesis is important, as it may shed light on the mechanism of viral resistance and lead to novel antiviral treatments. This development can thus guide decision-making and action to prevent COVID-19 infection.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"27 ","pages":"e929207"},"PeriodicalIF":2.8,"publicationDate":"2021-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/4c/4c/medscimonitbasicres-27-e929207.PMC7796072.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38780214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low Dose of β-Carotene Regulates Inflammation, Reduces Caspase Signaling, and Correlates with Autophagy Activation in Cardiomyoblast Cell Lines.","authors":"Ronny Lesmana,&nbsp;Inez Felia Yusuf,&nbsp;Hanna Goenawan,&nbsp;Achadiyani Achadiyani,&nbsp;Astrid Feinisa Khairani,&nbsp;Siti Nur Fatimah,&nbsp;Unang Supratman","doi":"10.12659/MSMBR.928648","DOIUrl":"https://doi.org/10.12659/MSMBR.928648","url":null,"abstract":"Background Excessive reactive oxygen species (ROS) stimulate mitochondrial damage that causes degenerative diseases such as cardiovascular disease (CVD). β-carotene (BC), a natural antioxidant able to counteract free radicals, acts as a cytoprotective agent. However, knowledge of the role of BC on cardiomyoblasts is limited. In this study, we explored its role on COX4, Tom20, Nfr1, Nrf2, Nf-κB, LC3, p62, caspase 3, and caspase 9 and its association with cardiomyoblast viability and survival. Material/Methods H9C2 cell lines were seeded, cultivated until 90% to 100% confluency, and treated with various doses of BC: 10 μM, 1 μM, 0.1 μM, and 0.01 μM. After 24 h, the cells were harvested, lyzed, and tested for specific related protein expressions from each dose. Results Low-dose BC induced autophagy most effectively at 1 μM, 0.1 μM, and 0.01 μM, as indicated by a decrease of LC3II and p62 levels. We observed that Nf-κB protein levels were suppressed; Nrf2 was stimulated, but Nrf1 was not altered significantly. Further, low-dose BC might stimulate cell viability by reducing apoptotic signals of caspase 3 and 9. Notably, low-dose BC also showed potential to increase Tom20 protein levels. Conclusions Low-dose BC supplementation shows beneficial effects, especially at 0.01 μM, by reducing inflammation through the suppression of Nf-κB and increase of Nrf2 level. Autophagy as a cellular maintenance mechanism was also stimulated, and the amount of the mitochondria marker Tom20 increased. Taken together, results showed that specific low-dose BC is effective and might improve cell viability by stimulating autophagy, inhibiting proinflammatory factors, and suppressing apoptosis.","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"26 ","pages":"e928648"},"PeriodicalIF":2.8,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ac/fd/medscimonitbasicres-26-e928648.PMC7780889.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38749797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paclitaxel Ameliorates Palmitate-Induced Injury in Mouse Podocytes.","authors":"Seung Seob Son,&nbsp;Jeong Suk Kang,&nbsp;Eun Young Lee","doi":"10.12659/MSMBR.928265","DOIUrl":"https://doi.org/10.12659/MSMBR.928265","url":null,"abstract":"<p><p>BACKGROUND Palmitate, a common saturated free fatty acid, is increased in patients with diabetic nephropathy (DN). Excessive palmitate in kidney is known to cause proteinuria and fibrosis. Several studies have demonstrated that paclitaxel has anti-fibrotic and anti-inflammatory effects on kidney disease. However, whether paclitaxel can relieve podocyte injury is unclear. MATERIAL AND METHODS Immortalized mouse podocytes were used as an in vitro system. Palmitate was used to induce podocyte injury. Podocytes were divided into 4 groups: bovine serum albumin, palmitate, palmitate+1 nM paclitaxel, and palmitate+5 nM paclitaxel. The effects of paclitaxel on palmitate-induced podocyte injury were analyzed by western blot and real-time PCR. Intracellular reactive oxygen species (ROS) generation and podocyte cytoskeletons were analyzed using CM-H2DCF-DA and phalloidin staining. RESULTS Paclitaxel restored downregulated expression of nephrin and synaptopodin and upregulated VEGF expression after injury induced by palmitate. Remarkably, palmitate-induced actin cytoskeleton rearrangement in podocytes was repaired by paclitaxel. Four endoplasmic reticulum stress markers, ATF-6alpha, Bip, CHOP, and spliced xBP1, were significantly increased in palmitate-treated podocytes compared with control podocytes. Such increases were decreased by paclitaxel treatment. Palmitate-induced ROS generation was ameliorated by paclitaxel. Elevated Nox4 expression was also improved by paclitaxel. Paclitaxel alleviated the expression levels of the antioxidant molecules, Nrf-2, HO-1, SOD-1, and SOD-2. The paclitaxel effects were accompanied by inhibition of the inflammatory cytokines, MCP-1, TNF-alpha, TNF-R2, and TLR4, as well as attenuation of the apoptosis markers, Bax, Bcl-2, and Caspase-3. Furthermore, paclitaxel suppressed the palmitate-induced fibrosis molecules, fibronectin and TGF-ß1. CONCLUSIONS This study suggests that paclitaxel could be a therapeutic agent for treating palmitate-induced podocyte injury in DN.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"26 ","pages":"e928265"},"PeriodicalIF":2.8,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f7/80/medscimonitbasicres-26-e928265.PMC7751256.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38726893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An In Vitro Comparative Evaluation of Apical Leakage Using Different Root Canal Sealers.","authors":"Violeta Vula,&nbsp;Nexhmije Ajeti,&nbsp;Astrit Kuçi,&nbsp;Miranda Stavileci,&nbsp;Vegim Vula","doi":"10.12659/MSMBR.928175","DOIUrl":"https://doi.org/10.12659/MSMBR.928175","url":null,"abstract":"<p><p>BACKGROUND Successful endodontic therapy requires a fluid-tight apical seal. The aim of this in vitro study was to evaluate and compare the apical sealing ability of 3 root canal sealers: Apexit Plus, AH Plus, and Resilon/Epiphany sealers. MATERIAL AND METHODS Samples of 152 single-rooted teeth were divided into 2 test groups, and each group was divided into 3 subgroups based on the preparation and obturation technique. After preparation with the step-back technique, the first group of root canals were obturated with lateral gutta-percha compaction in combination with AH Plus sealer or Apexit Plus or with the Resilon/Epiphany system alone. In the second group, preparation was done with the crown-down technique and root canals were then obturated with Thermafil obturator in combination with AH Plus or Apexit Plus or with Resilon/Epiphany sealer alone. Apical leakage was determined using a dye leakage test observed with a stereomicroscope. The degree of dye leakage was assessed using the t test to comparing the arithmetic averages of the groups. RESULTS In the groups prepared with the step-back technique, the average dye leakage was lower in samples obturated with Resilon/Epiphany, than in those filled with AH Plus/lateral gutta-percha compaction or Apexit Plus/lateral gutta-percha compaction. In groups prepared with the crown-down technique and obturated with the Resilon/Epiphany system, the average dye leakage was lower than in those filled with AH Plus/Thermafil obturation and those filled with Apexit Plus/Thermafil obturation. CONCLUSIONS Although all preparation and obturation techniques showed dye penetration, the crown-down technique paired with the Resilon/Epiphany system showed the least leakage.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"26 ","pages":"e928175"},"PeriodicalIF":2.8,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/8e/af/medscimonitbasicres-26-e928175.PMC7702640.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38638304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reference Ranges and Determinant Factors for Fractional Exhaled Nitric Oxide in a Healthy Saudi Adult Population.","authors":"Syed Shahid Habib,&nbsp;Mohammad A Alzoghaibi,&nbsp;Syed Hamid Habib,&nbsp;Khalid A Al-Regaiey","doi":"10.12659/MSMBR.926382","DOIUrl":"https://doi.org/10.12659/MSMBR.926382","url":null,"abstract":"<p><p>BACKGROUND Fractional exhaled nitric oxide (FENO) has emerged as a promising marker in respiratory research. The aim of this study was to determine the reference range values of FENO for healthy Saudi adults and the factors associated with FENO levels. MATERIAL AND METHODS This cross-sectional study was conducted at the Department of Physiology, King Saud University, Riyadh, Saudi Arabia, from January 2016 to August 2017. A total of 429 healthy Saudi adults were initially recruited. The final selection included 412 participants, consisting of 307 men and 105 women. FENO measurements were performed according to the current recommendations of the American Thoracic Society. RESULTS We observed that the FENO levels of women were significantly lower than those of men (18.6 vs. 21.3, P=0.009). In women, the measured FENO ranged from 5.7 ppb to 42 ppb, and in men from 5.0 ppb to 55.0 ppb. The mean FENO level in the entire study population was 20.6, with a range of 5.0 ppb to 55.0 ppb. The difference became non-significant when we calculated the FENO after adjusting for body surface area by different percentile distributions. Multiple linear regression analysis showed that body surface area and weight were significant predictors of FENO levels. CONCLUSIONS In this study, FENO levels were significantly affected by demographic variables. Therefore, it is important to consider the factors influencing FENO values to make a valid clinical interpretation.</p>","PeriodicalId":18491,"journal":{"name":"Medical Science Monitor Basic Research","volume":"26 ","pages":"e926382"},"PeriodicalIF":2.8,"publicationDate":"2020-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/33/40/medscimonitbasicres-26-e926382.PMC7466833.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38294208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}