International Journal of Biomedical Science : IJBS最新文献

{"title":"Successful Myomectomy during Cesarean Section: Case Report & Literature Review","authors":"F. Ghaemmaghami, M. Karimi-Zarchi, M. Gharebaghian, T. Kermani","doi":"10.59566/ijbs.2017.13110","DOIUrl":"https://doi.org/10.59566/ijbs.2017.13110","url":null,"abstract":"Myomectomy is the most common surgery with cesarean section. There is controversy between obstetricians about doing myomectomy with cesarean section. A 29 years old primigravida patient presented with a large lower segment myoma (20 cm.) who underwent myomectomy during cesarean section at the term pregnancy. Myoma weighted 1500 gr. She didn't have intra-operative hemorrhage or any post-partum complications. Seems that there is no absolute contra-indication for myomectomy during cesarean section specially if the surgeon has enough experience and the myoma is large, located at the lower segments.","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"20 1","pages":"119 - 121"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78669851","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":"Passionflower Extract Induces High-amplitude Rhythms without Phase Shifts in the Expression of Several Circadian Clock Genes in Vitro and in Vivo","authors":"K. Toda, S. Hitoe, Shogo Takeda, Norihito Shimizu, H. Shimoda","doi":"10.59566/ijbs.2017.13084","DOIUrl":"https://doi.org/10.59566/ijbs.2017.13084","url":null,"abstract":"Circadian rhythms play key roles in the regulation of physiological and behavioral systems including wake-sleep cycles. We evaluated the effects of passionflower (aerial parts of Passiflora incarnata Linnaeus) extract (PFE) on circadian rhythms using NIH3T3 cells and mice. PFE (100 μg/mL) induced high-amplitude rhythms in the expression of period circadian protein (Per) 2, cryptochrome (Cry) 1, superoxide dismutase (SOD) 1, and glutathione peroxidase (GPx) in vitro from 12 h after a treatment with serum-rich medium. Isovitexin 2\"-O-glucoside, isoschaftoside, and homoorientin, which were purified from PFE, also significantly enhanced Per2 mRNA expression at 20 h. An oral treatment with PFE (100 mg/kg/day) at zeitgeber time (ZT) 0 h for 15 days improved sleep latencies and sleeping times in the pentobarbital-induced sleep test in mice, similar to muscimol (0.2 mg/kg, i.p.). PFE induced high-amplitude rhythms without obvious phase shifts in serum corticosterone levels and the expression of Per1, Per2, and Cry1 in the liver as well as NIH3T3 cells. However, in the cerebrum, PFE enhanced the circadian expression of brain-muscle ARNT-like protein (Bmal) 1, circadian locomotor output cycles kaput (Clock), and Per1. Regarding this difference, we suggest the involvement of several neurotransmitters that influence the circadian rhythm. Indeed, PFE significantly increased dopamine levels at ZT 18 h, and then affected the mRNA expression of the synthetic and metabolic enzymes such as monoamine oxidase (MAO), catechol-O-methyltransferase (COMT), and glutamic acid decarboxylase (GAD). The results obtained show that PFE positively modulates circadian rhythms by inducing high-amplitude rhythms in the expression of several circadian clock genes.","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"9 1","pages":"84 - 92"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85191393","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":"Molecular Mechanisms and Biological Functions of siRNA","authors":"Hassan Dana, Ghanbar Mahmoodi Chalbatani, H. Mahmoodzadeh, Rezvan Karimloo, Omid Rezaiean, Amirreza Moradzadeh, N. Mehmandoost, Fateme Moazzen, A. Mazraeh, Vahid Marmari, M. Ebrahimi, M. Rashno, Saeid Jan Abadi, Elahe Gharagouzlo","doi":"10.59566/ijbs.2017.13048","DOIUrl":"https://doi.org/10.59566/ijbs.2017.13048","url":null,"abstract":"One of the most important advances in biology has been the discovery that siRNA (small interfering RNA) is able to regulate the expression of genes, by a phenomenon known as RNAi (RNA interference). The discovery of RNAi, first in plants and Caenorhabditis elegans and later in mammalian cells, led to the emergence of a transformative view in biomedical research. siRNA has gained attention as a potential therapeutic reagent due to its ability to inhibit specific genes in many genetic diseases. siRNAs can be used as tools to study single gene function both in vivo and in-vitro and are an attractive new class of therapeutics, especially against undruggable targets for the treatment of cancer and other diseases. The siRNA delivery systems are categorized as non-viral and viral delivery systems. The non-viral delivery system includes polymers; Lipids; peptides etc. are the widely studied delivery systems for siRNA. Effective pharmacological use of siRNA requires ‘carriers’ that can deliver the siRNA to its intended site of action. The carriers assemble the siRNA into supramolecular complexes that display functional properties during the delivery process.","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"26 1","pages":"48 - 57"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89888619","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":"The Impact of Biophysical Properties of Erythrocytes on their Aggregation.","authors":"Mohamed A Elblbesy, Maisa E Moustafa","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Erythrocytes aggregation takes places under low shear conditions or at stasis. All suggested mechanisms of erythrocytes aggregation indicated the importance role of fibrinogen and other blood proteins in enhanced erythrocyte aggregation. Recently a special attention is given to the cellular factors that may effect on erythrocytes aggregation. The present study inferred the effect of the cellular properties of erythrocytes on their aggregation. In the present study, aggregation index was calculated by a simple microscopic method. Correlations between erythrocytes aggregation index and mean cell volume, osmotic fragility, electrophoretic mobility, and magnetophoretic mobility were studied. The findings of this study indicated that the aggregation index is significatly correlated to mean cell volume, magnetophoretic mobility, osmotic fragility and electrophoretic mobility. Thus, It is concluded that cellular factors should be taken into consideration when studying the mechanism of erythrocytes aggregation.</p>","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"13 2","pages":"113-118"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5542914/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35284419","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":"Successful Myomectomy during Cesarean Section: Case Report & Literature Review.","authors":"Fatemeh Ghaemmaghami, Mojgan Karimi-Zarchi, Mahin Gharebaghian, Tahere Kermani","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Myomectomy is the most common surgery with cesarean section. There is controversy between obstetricians about doing myomectomy with cesarean section. A 29 years old primigravida patient presented with a large lower segment myoma (20 cm.) who underwent myomectomy during cesarean section at the term pregnancy. Myoma weighted 1500 gr. She didn't have intra-operative hemorrhage or any post-partum complications. Seems that there is no absolute contra-indication for myomectomy during cesarean section specially if the surgeon has enough experience and the myoma is large, located at the lower segments.</p>","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"13 2","pages":"119-121"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5542915/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35284420","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":"To Evaluate Effect of Airborne Particle Abrasion using Different Abrasives Particles and Compare Two Commercial Available Zirconia on Flexural Strength on Heat Treatment","authors":"H. Prasad, Naveed Pasha, M. Hilal, G. Amarnath, Vinaya Kundapur, Mona Anand, Sumeet Singh","doi":"10.59566/ijbs.2017.13093","DOIUrl":"https://doi.org/10.59566/ijbs.2017.13093","url":null,"abstract":"Background and objective: The popularity of ceramic restorations can be attributed to its life-like appearance, durability and biocompatibility and therefore ceramic restorations have been widely used for anterior and posterior teeth. Ceramic restorations have esthetic and biocompatible advantages but low fracture resistance. Since it has high flexural strength and fracture resistance, yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) is the dental material most commonly used for the core of ceramic crowns and fixed dental prosthesis. In spite of improved mechanical properties, acceptable marginal adaptation and biocompatibility the whitish opacity of zirconia is an obvious esthetic disadvantage. The zirconia framework is often veneered with conventional feldspathic porcelain to achieve a natural appearance. However it is difficult to achieve sufficient bond strength between zirconia and the veneering material. Achieving sufficient bond strength between the veneering ceramic and the zirconia core is a major challenge in the long term clinical success of veneered zirconia restorations. The main objective of this study is to evaluate the effect of different surface treatments on the fracture strength of the two commercially available Zirconia namely Ceramill and ZR-White (AMANNGIRRBACH and UPCERA) respectively. Method: Two commercially available pre-sinteredyttrium stabilized Zirconia blanks (ZR-White and Ceramill) from AMANNGIRRBACH and UPCERA respectively are used to produce the disc shaped specimens of size (15.2 ± 0.03 mm in diameter and 1.2 ± 0.03 mm thick) from each Zirconia blank. All disc shaped specimens are heated at 1200°C in a furnace for 2 hours to form homogenous tetragonal ZrO2. The dimensions of the specimens are measured with a digital caliper (aerospace). The thickness and diameter of each specimen are calculated as the means of 3 measurements made at random sites. 80 discs from each Zirconia blank are divided into ten groups of 8 specimens each. Heat treatment after airborne-particle abrasion using 50 µm Al2O3 particles and 50 µm silica coated Al2O3 are applied to the upper and lower surfaces of the specimens. Each specimen is held under a pressure of 30 psi for 15 seconds at a direction perpendicular to the surface and at a distance of 30mm with an airborne particle abrasion device for the specimens in the airborne particle abraded groups. Heat treatments were performed at a starting temperature of 500°C, heating rate of 100°c/ min, ending at a temperature of 1000°C and 15 minutes holding time without vacuum for the specimens in the group 4, 5, 9 and 10. Airborne-particle abrasion mimicking the preparation for cementation was applied to the lower surfaces with 50 µm alumina and silica coated alumina particles for the specimens in the groups 6, 7, 8, 9 and 10. The specimens were cleaned for 15 minutes in an ultrasonic bath containing distilled water. To determine the fracture strength, a disc of 10 mm diameter was used to","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"50 1","pages":"93 - 112"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82011959","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":"Peruvian Maca (Lepidium peruvianum) – III: The Effects of Cultivation Altitude on Phytochemical and Genetic Differences in the Four Prime Maca Phenotypes","authors":"H. Meissner, A. Mścisz, M. Baraniak, E. Piątkowska, P. Pisulewski, M. Mrozikiewicz, T. Bobkiewicz‐Kozlowska","doi":"10.59566/ijbs.2017.13058","DOIUrl":"https://doi.org/10.59566/ijbs.2017.13058","url":null,"abstract":"In two trials, dietary and Glucosinolates’ characteristics in four Maca phenotypes have been examined with an extension into the determination of DNA sequences. Hypocotyls of the four prime phenotypes of Peruvian Maca - Lepidium peruvianum Chacon, labelled as “Yellow”, “Black”, “Red” and “Purple” were separated from mixed Maca crops cultivated in four geographically-distant locations in the Peruvian Andes at altitudes between 2,800m and 4,300 m a.s.l. It was found that at higher altitudes where Red and Purple Maca phenotypes were grown, the significantly higher (P<0.05) Glucosinolates’ concentrations, adopted as the marker of Maca physiological activity, were observed with the Purple phenotype showing the highest Glucosinolates’ content at 4,300m a.s.l., followed by the Red-coloured hypocotyls. Black Maca showed a reversal, but also a significant (P<0.05) trend, while the Yellow phenotype showed no visible altitude-inflicted response (P>0.05) and has consistently the lowest Glucosinolates content. Thus, it is reasonable to assume that the altitude at which Red, Purple and Black phenotypes of L. peruvianum are grown, may be responsible for the variation in physiologic functionalities, leading to different than expected specific therapeutic and health benefits induced by Maca phenotypes grown at diverse altitudes. Although promising, insufficiently precise differences in DNA sequences failed to distinguish, without any reasonable doubt, four Maca phenotypes cultivated either in the same or geographically-distant locations, and harvested at different altitudes a.s.l. Further research on DNA sequences is needed, with more primers and larger number of Maca phenotypes, considering biosynthesis of secondary metabolites and adaptation pathways induced by harsh environment at altitudes where Maca is cultivated.","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"30 1","pages":"58 - 73"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84438546","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":"The Impact of Biophysical Properties of Erythrocytes on their Aggregation","authors":"M. A. Elblbesy, M. Moustafa","doi":"10.59566/ijbs.2017.13104","DOIUrl":"https://doi.org/10.59566/ijbs.2017.13104","url":null,"abstract":"Erythrocytes aggregation takes places under low shear conditions or at stasis. All suggested mechanisms of erythrocytes aggregation indicated the importance role of fibrinogen and other blood proteins in enhanced erythrocyte aggregation. Recently a special attention is given to the cellular factors that may effect on erythrocytes aggregation. The present study inferred the effect of the cellular properties of erythrocytes on their aggregation. In the present study, aggregation index was calculated by a simple microscopic method. Correlations between erythrocytes aggregation index and mean cell volume, osmotic fragility, electrophoretic mobility, and magnetophoretic mobility were studied. The findings of this study indicated that the aggregation index is significatly correlated to mean cell volume, magnetophoretic mobility, osmotic fragility and electrophoretic mobility. Thus, It is concluded that cellular factors should be taken into consideration when studying the mechanism of erythrocytes aggregation.","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"10 1","pages":"113 - 118"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84882715","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":"Peruvian Maca (<i>Lepidium peruvianum</i>) - III: The Effects of Cultivation Altitude on Phytochemical and Genetic Differences in the Four Prime Maca Phenotypes.","authors":"Henry O Meissner, Alina Mscisz, Marek Baraniak, Ewa Piatkowska, Pawel Pisulewski, Mieczyslaw Mrozikiewicz, Teresa Bobkiewicz-Kozlowska","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In two trials, dietary and Glucosinolates' characteristics in four Maca phenotypes have been examined with an extension into the determination of DNA sequences. Hypocotyls of the four prime phenotypes of Peruvian Maca - <i>Lepidium peruvianum</i> Chacon, labelled as \"Yellow\", \"Black\", \"Red\" and \"Purple\" were separated from mixed Maca crops cultivated in four geographically-distant locations in the Peruvian Andes at altitudes between 2,800m and 4,300 m a.s.l. It was found that at higher altitudes where Red and Purple Maca phenotypes were grown, the significantly higher (<i>P</i><0.05) Glucosinolates' concentrations, adopted as the marker of Maca physiological activity, were observed with the Purple phenotype showing the highest Glucosinolates' content at 4,300m a.s.l., followed by the Red-coloured hypocotyls. Black Maca showed a reversal, but also a significant (<i>P</i><0.05) trend, while the Yellow phenotype showed no visible altitude-inflicted response (<i>P</i>>0.05) and has consistently the lowest Glucosinolates content. Thus, it is reasonable to assume that the altitude at which Red, Purple and Black phenotypes of <i>L. peruvianum</i> are grown, may be responsible for the variation in physiologic functionalities, leading to different than expected specific therapeutic and health benefits induced by Maca phenotypes grown at diverse altitudes. Although promising, insufficiently precise differences in DNA sequences failed to distinguish, without any reasonable doubt, four Maca phenotypes cultivated either in the same or geographically-distant locations, and harvested at different altitudes a.s.l. Further research on DNA sequences is needed, with more primers and larger number of Maca phenotypes, considering biosynthesis of secondary metabolites and adaptation pathways induced by harsh environment at altitudes where Maca is cultivated.</p>","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"13 2","pages":"58-73"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5542917/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35284495","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":"Passionflower Extract Induces High-amplitude Rhythms without Phase Shifts in the Expression of Several Circadian Clock Genes <i>in Vitro</i> and <i>in Vivo</i>.","authors":"Kazuya Toda,&nbsp;Shoketsu Hitoe,&nbsp;Shogo Takeda,&nbsp;Norihito Shimizu,&nbsp;Hiroshi Shimoda","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Circadian rhythms play key roles in the regulation of physiological and behavioral systems including wake-sleep cycles. We evaluated the effects of passionflower (aerial parts of <i>Passiflora incarnata Linnaeus</i>) extract (PFE) on circadian rhythms using NIH3T3 cells and mice. PFE (100 μg/mL) induced high-amplitude rhythms in the expression of period circadian protein (Per) 2, cryptochrome (Cry) 1, superoxide dismutase (SOD) 1, and glutathione peroxidase (GPx) <i>in vitro</i> from 12 h after a treatment with serum-rich medium. Isovitexin 2\"-<i>O</i>-glucoside, isoschaftoside, and homoorientin, which were purified from PFE, also significantly enhanced Per2 mRNA expression at 20 h. An oral treatment with PFE (100 mg/kg/day) at zeitgeber time (ZT) 0 h for 15 days improved sleep latencies and sleeping times in the pentobarbital-induced sleep test in mice, similar to muscimol (0.2 mg/kg, <i>i.p.</i>). PFE induced high-amplitude rhythms without obvious phase shifts in serum corticosterone levels and the expression of Per1, Per2, and Cry1 in the liver as well as NIH3T3 cells. However, in the cerebrum, PFE enhanced the circadian expression of brain-muscle ARNT-like protein (Bmal) 1, circadian locomotor output cycles kaput (Clock), and Per1. Regarding this difference, we suggest the involvement of several neurotransmitters that influence the circadian rhythm. Indeed, PFE significantly increased dopamine levels at ZT 18 h, and then affected the mRNA expression of the synthetic and metabolic enzymes such as monoamine oxidase (MAO), catechol-<i>O</i>-methyltransferase (COMT), and glutamic acid decarboxylase (GAD). The results obtained show that PFE positively modulates circadian rhythms by inducing high-amplitude rhythms in the expression of several circadian clock genes.</p>","PeriodicalId":13852,"journal":{"name":"International Journal of Biomedical Science : IJBS","volume":"13 2","pages":"84-92"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5542920/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35284499","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}