Mint species (Mentha sp.) are important vegetables with medicinal and economic characteristics. In this study, the genetic relationships of 34 accessions of 5 mint species including Mentha spicata, Mentha longifolia, Mentha piperita, Mentha aquatica, and Mentha mozaffarianii Jamzad were evaluated using Inter-Simple Sequence Repeat (ISSR) markers, followed by the analysis of the polymerase chain reaction (PCR) products on a high-resolution acrylamide gel. ISSR primers yielded 74 clear and reproducible bands, of which 50 bands were polymorph (65.28%), with a minimum of 7 ((TG)8G) and a maximum of 17 ((GA)8YC) bands per primer. Polymorphism information content (PIC) for each primer varied from 0.37 to 0.46 with an average of 0.41. The marker index referred to (GA)8YC primer as the most efficient compared to others. The analysis of the molecular variance (AMOVA) at the species level showed that variation within the species (75%) exhibits greater partitioning than the variation among species (15%). The cluster analysis performed was based on Nei’s genetic distances using the unweighted pair group method with arithmetic mean (UPGMA) method. At the accession level, all 34 accessions were separated into 3 main clusters. The cluster analysis at the species level placed 3 species including M. aquatica, M. longifolia, and M. spicata in one common group. Based on the cluster analysis, the M. mozaffarianii Jamzad, as an Iranian species, was placed in Mentha section, closer to other species, when compared to M. piperita. The results indicated that ISSR markers alongside a high-resolution electrophoresis can be truly helpful in visualizing the diversity among different accessions of one species.
{"title":"Genetic relationships of Iranian endemic mint species, Mentha mozaffariani Jamzad and some other mint species revealed by ISSR markers","authors":"A. Choupani, A. Shojaeiyan, M. Maleki","doi":"10.5114/BTA.2019.83208","DOIUrl":"https://doi.org/10.5114/BTA.2019.83208","url":null,"abstract":"Mint species (Mentha sp.) are important vegetables with medicinal and economic characteristics. In this study, the genetic relationships of 34 accessions of 5 mint species including Mentha spicata, Mentha longifolia, Mentha piperita, Mentha aquatica, and Mentha mozaffarianii Jamzad were evaluated using Inter-Simple Sequence Repeat (ISSR) markers, followed by the analysis of the polymerase chain reaction (PCR) products on a high-resolution acrylamide gel. ISSR primers yielded 74 clear and reproducible bands, of which 50 bands were polymorph (65.28%), with a minimum of 7 ((TG)8G) and a maximum of 17 ((GA)8YC) bands per primer. Polymorphism information content (PIC) for each primer varied from 0.37 to 0.46 with an average of 0.41. The marker index referred to (GA)8YC primer as the most efficient compared to others. The analysis of the molecular variance (AMOVA) at the species level showed that variation within the species (75%) exhibits greater partitioning than the variation among species (15%). The cluster analysis performed was based on Nei’s genetic distances using the unweighted pair group method with arithmetic mean (UPGMA) method. At the accession level, all 34 accessions were separated into 3 main clusters. The cluster analysis at the species level placed 3 species including M. aquatica, M. longifolia, and M. spicata in one common group. Based on the cluster analysis, the M. mozaffarianii Jamzad, as an Iranian species, was placed in Mentha section, closer to other species, when compared to M. piperita. The results indicated that ISSR markers alongside a high-resolution electrophoresis can be truly helpful in visualizing the diversity among different accessions of one species.","PeriodicalId":8999,"journal":{"name":"BioTechnologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71065854","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}
K. Nworie, Augustine N. Okorie, D. N. Ebere, Onyedikachi C. Obike
Thrombocytopenia is closely associated with heparin therapy and hematological disorders and other common diseases in patients admitted in the hospital. Globally, thrombocytopenic cases in hospitals leading to 80% of deaths are mainly due to refractory bleeding and lack of availability of platelet concentrates. Currently, chemical compounds for managing thrombocytopenia are needed. The aim of the study was to determine the effect of methanolic leaf extract of Bauhinia monandra as a potential antidote for treating heparin-induced thrombocytopenia (HIT). A total of 30 mice were used for the experimental study. The mice were divided into five Groups (I–V) of six mice each. Group I (normal control) was given distilled water only, and Group II (positive control) was given heparin only. Groups III, IV, and V (treatment groups) were given heparin and methanolic leaf extract of B. monandra at a dose of 100, 200, and 400 mg/kg body weight (b. wt), respectively. Furthermore, blood samples were collected to determine the blood platelet count. Bleeding time and clotting time were also determined. This study showed that the mice in the group treated with methanolic leaf extract of B. monandra at a dose of 400 mg/kg b. wt had significantly (P < 0.05) higher platelet counts (225.10 ± 6.41) than the control groups: normal control (181.90 ± 11.38) and positive control (127.65 ± 5.79). It also significantly decreased the bleeding and clotting time. Acute toxicity test showed no significant physical and behavioral changes. The results from this study show that leaf methanolic extract of B. monandra is effective as an antidote for treating HIT.
血小板减少症与肝素治疗及住院患者血液病等常见病密切相关。在全球范围内,导致80%死亡的医院血小板减少病例主要是由于难治性出血和缺乏血小板浓缩物。目前,需要治疗血小板减少症的化合物。本研究的目的是确定紫荆叶甲醇提取物作为治疗肝素性血小板减少症(HIT)的潜在解毒剂的效果。实验共使用30只小鼠。将小鼠分为5组(I-V),每组6只。ⅰ组(正常对照组)只给予蒸馏水,ⅱ组(阳性对照组)只给予肝素。III组、IV组和V组(治疗组)分别给予100、200和400 mg/kg体重(B. wt)的肝素和苦楝叶甲醇提取物。此外,采集血样测定血小板计数。测定出血时间和凝血时间。结果表明,山楂叶甲醇提取物400mg /kg B. wt组小鼠血小板计数(225.10±6.41)明显高于正常对照组(181.90±11.38)和阳性对照组(127.65±5.79)(P < 0.05)。它还显著缩短了出血和凝血时间。急性毒性试验未见明显的生理和行为改变。本研究结果表明,苦参叶甲醇提取物是治疗HIT的有效解药。
{"title":"Evaluation of antidote potential of methanol leaf extract of Bauhinia monandra on heparin-induced thrombocytopenia in mice","authors":"K. Nworie, Augustine N. Okorie, D. N. Ebere, Onyedikachi C. Obike","doi":"10.5114/BTA.2019.83212","DOIUrl":"https://doi.org/10.5114/BTA.2019.83212","url":null,"abstract":"Thrombocytopenia is closely associated with heparin therapy and hematological disorders and other common diseases in patients admitted in the hospital. Globally, thrombocytopenic cases in hospitals leading to 80% of deaths are mainly due to refractory bleeding and lack of availability of platelet concentrates. Currently, chemical compounds for managing thrombocytopenia are needed. The aim of the study was to determine the effect of methanolic leaf extract of Bauhinia monandra as a potential antidote for treating heparin-induced thrombocytopenia (HIT). A total of 30 mice were used for the experimental study. The mice were divided into five Groups (I–V) of six mice each. Group I (normal control) was given distilled water only, and Group II (positive control) was given heparin only. Groups III, IV, and V (treatment groups) were given heparin and methanolic leaf extract of B. monandra at a dose of 100, 200, and 400 mg/kg body weight (b. wt), respectively. Furthermore, blood samples were collected to determine the blood platelet count. Bleeding time and clotting time were also determined. This study showed that the mice in the group treated with methanolic leaf extract of B. monandra at a dose of 400 mg/kg b. wt had significantly (P < 0.05) higher platelet counts (225.10 ± 6.41) than the control groups: normal control (181.90 ± 11.38) and positive control (127.65 ± 5.79). It also significantly decreased the bleeding and clotting time. Acute toxicity test showed no significant physical and behavioral changes. The results from this study show that leaf methanolic extract of B. monandra is effective as an antidote for treating HIT.","PeriodicalId":8999,"journal":{"name":"BioTechnologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71065867","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}
To overcome antibiotic resistance in pathogenic microorganisms, research work is being directed towards finding alternative targets in bacteria towards which novel antibiotics can be designed. One of the targets is cell-to-cell communication pathway, also called quorum sensing which is promising since it controls the expression of virulence genes. Another possible target is the segregation apparatus that is present in low copy number plasmids that may contain antibiotic resistance genes. Cellular elements that function in division or maintain the shape of the micro-organisms may be also used as alternative targets to affect cytokinesis or cause abnormalities in shape, which can or may lead to cell lysis. Additionally, certain metabolic pathways present in microbes do not exist in mammals and, therefore, may be exploited as novel targets without affecting the human host. Screening of ligands or chemical compounds from natural products may be useful in finding inhibitors acting on the above-mentioned cellular components, and it may lead to the design of future antibiotics.
{"title":"Molecular targets to develop future antimicrobials","authors":"M. Al-Khayyat","doi":"10.5114/BTA.2019.85325","DOIUrl":"https://doi.org/10.5114/BTA.2019.85325","url":null,"abstract":"To overcome antibiotic resistance in pathogenic microorganisms, research work is being directed towards finding alternative targets in bacteria towards which novel antibiotics can be designed. One of the targets is cell-to-cell communication pathway, also called quorum sensing which is promising since it controls the expression of virulence genes. Another possible target is the segregation apparatus that is present in low copy number plasmids that may contain antibiotic resistance genes. Cellular elements that function in division or maintain the shape of the micro-organisms may be also used as alternative targets to affect cytokinesis or cause abnormalities in shape, which can or may lead to cell lysis. Additionally, certain metabolic pathways present in microbes do not exist in mammals and, therefore, may be exploited as novel targets without affecting the human host. Screening of ligands or chemical compounds from natural products may be useful in finding inhibitors acting on the above-mentioned cellular components, and it may lead to the design of future antibiotics.","PeriodicalId":8999,"journal":{"name":"BioTechnologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71066258","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}
The rapid and practical determination of lactic acid concentration during anaerobic digestion and in acidification samples is extremely important to ensure the digester is running properly and to avoid build-up of lactic acid. Thus, developing a simple and fast method for analyzing lactic acid in anaerobic digestion samples is important. The results of the present study revealed that lactic acid is an intermediate product of anaerobic digestion, which could be quickly measured using a portable lactate biosensor. We obtained linear standard curves from the relationship between various lactic acid concentrations of the standard solution and the lactate biosensor reading, which were tested at different temperatures (30, 45 and 55EC). A high value of coefficient determination, -0.98–0.99, was obtained from all standard curves. This suggests that the evaluated system was accurate, reliable, and reproducible.
{"title":"Rapid determination of lactic acid in anaerobic biological\u0000treatment process using a portable sensitive lactate biosensor","authors":"D. Darwin","doi":"10.5114/BTA.2019.85320","DOIUrl":"https://doi.org/10.5114/BTA.2019.85320","url":null,"abstract":"The rapid and practical determination of lactic acid concentration during anaerobic digestion and in acidification samples is extremely important to ensure the digester is running properly and to avoid build-up of lactic acid. Thus, developing a simple and fast method for analyzing lactic acid in anaerobic digestion samples is important. The results of the present study revealed that lactic acid is an intermediate product of anaerobic digestion, which could be quickly measured using a portable lactate biosensor. We obtained linear standard curves from the relationship between various lactic acid concentrations of the standard solution and the lactate biosensor reading, which were tested at different temperatures (30, 45 and 55EC). A high value of coefficient determination, -0.98–0.99, was obtained from all standard curves. This suggests that the evaluated system was accurate, reliable, and reproducible.","PeriodicalId":8999,"journal":{"name":"BioTechnologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71066590","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}