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Sujok as an alternative therapy to reduce dyspnea in patients with respiratory problems Sujok 作为一种替代疗法,可减轻呼吸困难患者的呼吸困难症状
Pub Date : 2024-02-28 DOI: 10.36922/itps.1418
I. Nurjannah, Zakiah Novianti, Agus Suharto, Muhammad Yasir Sudarmo, Ki Hariyadi
The management of dyspnea has received little attention as compared to other potentially severe symptoms of the disease, such as acute and chronic pain. The previous case reports indicated that Sujok therapy can alleviate dyspnea in a short time. This study aimed to determine whether Sujok therapy could reduce dyspnea symptoms in patients with oxygen saturation of less than 96%. Sujok originated from the Korean language, which consisted of the words Su and Jok, denoting hand and foot, respectively. Sujok therapy involves manipulating the hands or feet through massaging, coloring, or attaching seeds, magnets, or needles. This quasi-experimental study involved 34 males and 26 females with oxygen saturation of < 96% and experienced dyspnea with a grade of more than 2 on the Likert scale (1 – 5). Respondents were divided into an intervention group (IG) (n = 30) and a control group (CG) (n = 30), where IG was given the Sujok therapy. Measurements were taken for both groups at 0, 5, 15, and 30 min. The study reported mean ages of 55.6 ± 13.49 and 60.63 ± 9.26 in CG and IG, respectively. The increase in oxygen saturation was statistically significant in the overall measurement time in IG (P < 0.01). After 30 min, the average grade of dyspnea was 3 (moderate) for CG and 2 (mild) for IG. In CG, dyspnea decreased significantly at 30 min by 0.185 (P = 0.001; P < 0.05), whereas in IG, dyspnea decreased significantly at 5 min by 0.649 (P < 0.01). In conclusion, Sujok therapy can increase oxygen saturation and reduce the dyspnea grade in patients with respiratory problems.
与疾病的其他潜在严重症状(如急性和慢性疼痛)相比,呼吸困难的治疗很少受到关注。之前的病例报告显示,Sujok疗法可在短时间内缓解呼吸困难。本研究旨在确定 Sujok疗法能否减轻血氧饱和度低于96%的患者的呼吸困难症状。Sujok源自韩语,由Su和Jok组成,分别表示手和脚。Sujok疗法包括通过按摩、着色或粘贴种子、磁铁或针头来操作手或脚。这项准实验研究涉及 34 名男性和 26 名女性,他们的血氧饱和度低于 96%,并且呼吸困难程度在李克特量表(1 - 5)中超过 2 级。受试者被分为干预组(IG)(30 人)和对照组(CG)(30 人),其中干预组接受 Sujok 治疗。两组分别在 0、5、15 和 30 分钟时进行测量。研究报告显示,CG 和 IG 的平均年龄分别为 55.6 ± 13.49 岁和 60.63 ± 9.26 岁。在整个测量时间内,IG 组血氧饱和度的增加具有统计学意义(P < 0.01)。30 分钟后,CG 呼吸困难的平均等级为 3(中度),IG 为 2(轻度)。CG 患者的呼吸困难在 30 分钟后明显减轻了 0.185(P = 0.001;P < 0.05),而 IG 患者的呼吸困难在 5 分钟后明显减轻了 0.649(P < 0.01)。总之,Sujok疗法可以提高呼吸系统疾病患者的血氧饱和度,降低呼吸困难等级。
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引用次数: 0
Management and maintenance of oral health: Personalized primary prevention strategies and protocols in patients at risk of developing medication-related osteonecrosis of the jaw 管理和维护口腔健康:针对有患药物性颌骨坏死风险的患者的个性化初级预防策略和方案
Pub Date : 2024-01-11 DOI: 10.36922/itps.1419
Giovanna Mosaico, C. Casu
Skeletal complications arising from osteoporosis or bone metastases are associated with considerable pain, increased mortality, and diminished quality of life. Agents that prevent bone resorption, such as bisphosphonates, denosumab, and antiangiogenic agents, prove effective in reducing fracture risk and find extensive use in patients with osteoporosis or bone cancer metastases. Medication-related osteonecrosis of the jaw (MRONJ) is a potentially serious adverse event associated with high cumulative doses of antiresorptive drugs. Other risk factors for osteonecrosis of the jaw include glucocorticoid use, maxillary or mandibular bone surgery, poor oral hygiene, chronic inflammation, diabetes mellitus, inappropriate dentures, and other MRONJ-related medications. Preventive strategies encompass completing necessary oral surgery before initiating antiresorptive drug therapy, administering antibiotics before and/or after the procedure, rinsing the mouth with chlorhexidine, ensuring adequate wound healing post-tooth extraction, and maintaining good oral hygiene. The primary goal of treatment is to improve the patient’s quality of life by managing pain and infection, preventing the development of new lesions, and decelerating disease progression. Dentists and dental hygienists, operating within a multi-professional team, play a key role in the primary prevention of MRONJ. However, a standardized multidisciplinary approach, fostering sustained dialog between specialists involved in the management of patients at risk for MRONJ, remains essential. This review describes the preventive and individualized oral hygiene management in patients at risk for this condition.
骨质疏松症或骨转移引起的骨骼并发症会带来极大的痛苦、增加死亡率并降低生活质量。双膦酸盐、地诺单抗和抗血管生成药物等防止骨吸收的药物被证明可有效降低骨折风险,并被广泛用于骨质疏松症或骨癌转移患者。与药物相关的颌骨坏死(MRONJ)是与高累积剂量抗骨吸收药物相关的潜在严重不良事件。颌骨骨坏死的其他危险因素包括使用糖皮质激素、上颌骨或下颌骨手术、口腔卫生不良、慢性炎症、糖尿病、不合适的假牙以及其他与MRONJ相关的药物。预防策略包括在开始抗骨吸收药物治疗前完成必要的口腔手术、在手术前和/或手术后使用抗生素、用洗必泰漱口、确保拔牙后伤口充分愈合以及保持良好的口腔卫生。治疗的主要目的是通过控制疼痛和感染、预防新病变的发生和减缓疾病的进展来提高患者的生活质量。牙科医生和牙科保健师在一个多专业团队中开展工作,在 MRONJ 的初级预防中发挥着关键作用。然而,标准化的多学科方法,促进参与管理有 MRONJ 风险的患者的专家之间的持续对话,仍然是至关重要的。本综述介绍了高危患者的预防性和个性化口腔卫生管理。
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引用次数: 0
Therapeutic small molecules in the development of treatment for subarachnoid hemorrhage 开发治疗蛛网膜下腔出血的治疗性小分子药物
Pub Date : 2024-01-11 DOI: 10.36922/itps.2019
Siddharth Shah, Abiy Tereda, Brandon Lucke-Wold, Pavel S. Pichardo-Rojas
Subarachnoid hemorrhage (SAH) is a severe and often fatal condition characterized by the accumulation of blood beneath the arachnoid layer of the meninges. Predominantly affecting individuals in the 40–60 age range, it is commonly caused by head trauma from falls or car accidents. Ruptures of cerebral aneurysms also contribute significantly to SAH. Risk factors for SAH include hypertension and smoking, and symptoms typically include severe headache and neck pain. Diagnosing SAH typically involves a combination of medical history, physical examination, and imaging studies such as computed tomography angiography or magnetic resonance imaging angiography. Recent research suggests that pharmaceutical management of intracerebral hemorrhage (ICH) includes the administration of recombinant activated factor VII, tranexamic acid, and aggressive blood pressure reduction. For patients with significant SAH and ICH, minimally invasive surgical procedures for hematoma evacuation, as well as surgical evacuation of SAH and ICH, have proven to be highly beneficial. Furthermore, an emerging area of treatment involves therapeutic small molecules designed to interrupt the pathophysiological pathways leading to SAH. This novel approach holds promise for advancing our understanding and management of this complex medical condition.
蛛网膜下腔出血(SAH)是一种严重且往往致命的疾病,其特点是血液积聚在脑膜的蛛网膜层下。它主要影响 40-60 岁年龄段的人,通常由跌倒或车祸造成的头部外伤引起。脑动脉瘤破裂也是导致 SAH 的重要原因。SAH 的危险因素包括高血压和吸烟,症状通常包括剧烈头痛和颈部疼痛。诊断 SAH 通常需要结合病史、体格检查和影像学检查,如计算机断层扫描血管造影术或磁共振成像血管造影术。最新研究表明,脑内出血(ICH)的药物治疗包括服用重组活化因子 VII、氨甲环酸和积极降压。对于严重 SAH 和 ICH 患者,微创手术血肿清除术以及 SAH 和 ICH 手术清除术已被证明非常有益。此外,一个新兴的治疗领域涉及旨在中断导致 SAH 的病理生理途径的治疗性小分子药物。这种新方法有望促进我们对这一复杂病症的理解和管理。
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引用次数: 0
Inhibitory Potential of Chitosan Derivatives against Severe Acute Respiratory Syndrome Coronavirus 2: An In Silico Prospective 壳聚糖衍生物对严重急性呼吸综合征冠状病毒2的抑制潜力:一个计算机前瞻性研究
Pub Date : 2023-08-17 DOI: 10.36922/itps.1077
P. Das, S. Sahoo, Sanatan Majhi, Rout George Kerry, Ashutosh Kumar Singh, A. B. Jena
The present work was designed to investigate the antiviral potential of novel monomeric and oligomeric chitosan derivatives through in silico approaches. The goal was to identify potent broad-spectrum antiviral compounds as promising drug candidates against severe acute respiratory syndrome coronavirus 2 and understand their mode of action. Chitosan biopolymer and its derivatives were virtually screened against the spike glycoprotein and human angiotensin-converting enzyme 2 (ACE2) receptor of novel coronavirus-19. Hydroxypropyl trimethyl ammonium chloride chitosan (HTCC), a polymeric chitosan, has been reported to interact with the corona viral spike (S) protein and blocks its interaction with the ACE2 receptor. The enhancement of antiviral activity relies on better biocompatibility, structural correlations, variation in the degree of deacetylation, and molecular weight of modified chitosan derivatives. The chitosan derivatives constructively interact with viral S protein. Among the chitosan derivatives, N-carboxymethyl chitosan (NCMC) displayed efficient binding affinity. Comparing NCMC to mHTCC, monomeric chitosan, for their interaction with the S protein, receptor binding domain site, and ACE2 receptor, NCMC displayed better binding affinity of −7.9, −6.3, and −7.4 with binding energies of −6.2, −4.8, and −5.5 kcal/mol, respectively. Furthermore, through flexible docking, the interactions of the S protein with ACE2 receptor and ligand mHTCC-S protein complex and NCMC-S protein complex with ACE2 receptor were calculated, showing an efficient reduction of binding energy from −901.2 kJ/mol to −765.06 kJ/mol and −814.72 kJ/mol, respectively. This points to the decrease binding affinity of the viral S protein for the ACE2 receptor in the presence of NCMC/mHTCC. For the first time, the computational study envisages the antiviral efficiency of NCMC, mHTCC, and biocompatible chitosan derivatives as a preventive intervention against COVID-19.
本工作旨在通过硅方法研究新型单体和低聚壳聚糖衍生物的抗病毒潜力。目标是确定有效的广谱抗病毒化合物,作为治疗严重急性呼吸综合征冠状病毒2的有希望的候选药物,并了解它们的作用模式。对新型冠状病毒-19刺突糖蛋白和人血管紧张素转换酶2 (ACE2)受体进行了虚拟筛选。羟丙基三甲基氯化铵壳聚糖(HTCC)是一种聚合物壳聚糖,已被报道与冠状病毒刺突(S)蛋白相互作用,并阻断其与ACE2受体的相互作用。抗病毒活性的增强依赖于改性壳聚糖衍生物更好的生物相容性、结构相关性、去乙酰化程度的变化和分子量。壳聚糖衍生物与病毒S蛋白建设性相互作用。在壳聚糖衍生物中,n -羧甲基壳聚糖(NCMC)表现出高效的结合亲和力。NCMC与单体壳聚糖mHTCC、受体结合域位点和ACE2受体的结合亲合力分别为−7.9、−6.3和−7.4,结合能分别为−6.2、−4.8和−5.5 kcal/mol。此外,通过柔性对接,计算了S蛋白与ACE2受体的相互作用,并计算了配体mHTCC-S蛋白复合物和nmc -S蛋白复合物与ACE2受体的相互作用,结果表明,结合能分别从- 901.2 kJ/mol有效降低到- 765.06 kJ/mol和- 814.72 kJ/mol。这表明在NCMC/mHTCC存在下,病毒S蛋白对ACE2受体的结合亲和力降低。该计算研究首次将NCMC、mHTCC和生物相容性壳聚糖衍生物的抗病毒效率设想为对COVID-19的预防性干预。
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引用次数: 0
Bacterial Profile, Antimicrobial Susceptibility Patterns, and Associated Factors of Puerperal Sepsis in Asella, Central Ethiopia: A Cross-sectional Study 细菌谱,抗菌素敏感性模式和相关因素在阿塞拉产褥期败血症,埃塞俄比亚中部:一项横断面研究
Pub Date : 2023-08-16 DOI: 10.36922/itps.1018
Abduselam Abbiso Godana, Mulatu Gashaw, K. Abdella, Fikru Adere, Getenet Beyene
Sepsis, caused by various bacterial pathogens, is a significant contributor to maternal mortality worldwide. In many developing countries, including Ethiopia, empirical or syndromic treatment is commonly employed for puerperal sepsis, which may promote antimicrobial resistance (AMR). We conducted a cross-sectional study to investigate bacterial pathogens, their antimicrobial susceptibility patterns, and associated factors among women with suspected puerperal sepsis attending Asella Referral and Teaching Hospital from September 2020 to August 2021. A total of 174 participants were enrolled, and the sociodemographic and obstetric data were collected using a pretested structured questionnaire and checklist, respectively. Blood samples (approximately 20 ml) were collected from all study participants and incubated in BacT/ALERT® 3D automated blood culture system. In addition, endocervical swabs were collected in Amies transport media. Bacterial isolation and identification were performed following standard bacteriological methods. Antimicrobial susceptibility profiles of bacterial isolates were determined using the disc diffusion method. Data were entered into EpiData version 4.6 and analyzed using SPSS version 25.0. The overall positivity rate of bacterial isolates among puerperal sepsis-suspected women was 48.9%. Among these, 87.1% of the isolates were Gram-negative bacteria. The most common isolates were Escherichia coli (54.1%), followed by Klebsiella spp. (23.5%) and Staphylococci aureus (10.6%). High resistance rates were observed in E. coli to piperacillin (87%), in Klebsiella spp. to aztreonam (65%) and ceftriaxone (65%), and in S. aureus to trimethoprim-sulfamethoxazole (66.6%). Multidrug-resistant bacterial pathogens accounted for 81.2% of the isolates in this study. Multivariate regression analysis did not reveal any statistically significant association between the presence of bacteria and the sociodemographic and obstetrics factors. Our findings emphasize the urgency of strengthening microbiology services to optimize patient management and combat AMR in puerperal sepsis.
脓毒症是由各种细菌病原体引起的,是全世界孕产妇死亡的一个重要原因。在包括埃塞俄比亚在内的许多发展中国家,产褥期败血症通常采用经验性或综合征性治疗,这可能会促进抗菌素耐药性。我们进行了一项横断面研究,调查2020年9月至2021年8月在Asella转诊和教学医院就诊的疑似产褥期脓毒症妇女的细菌病原体、抗菌药物敏感性模式和相关因素。共纳入174名参与者,分别使用预先测试的结构化问卷和检查表收集社会人口学和产科数据。从所有研究参与者收集血液样本(约20毫升),并在BacT/ALERT®3D自动血液培养系统中培养。此外,在Amies运输介质中收集宫颈内膜拭子。按照标准细菌学方法进行细菌分离和鉴定。采用圆盘扩散法测定菌株的药敏谱。数据输入EpiData 4.6版本,使用SPSS 25.0版本进行分析。怀疑产褥期脓毒症妇女细菌总阳性率为48.9%。其中革兰氏阴性菌占87.1%。最常见的分离株为大肠杆菌(54.1%),其次为克雷伯氏菌(23.5%)和金黄色葡萄球菌(10.6%)。大肠杆菌对哌拉西林(87%)、克雷伯菌对氨曲南(65%)和头孢曲松(65%)、金黄色葡萄球菌对甲氧苄啶-磺胺甲恶唑(66.6%)的耐药率均较高。多药耐药病原菌占本研究分离株的81.2%。多变量回归分析未显示细菌的存在与社会人口统计学和产科因素之间有统计学意义的关联。我们的研究结果强调了加强微生物学服务以优化患者管理和对抗产褥期败血症AMR的紧迫性。
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引用次数: 0
Evaluation of the microbial quality of commercial liquid herbal preparations on the Ghanaian market 加纳市场上商品草药液体制剂微生物质量评价
Pub Date : 2023-08-09 DOI: 10.36922/itps.0425
C. Osei-Asare, Frederick William Akuffo Owusu, J. Apenteng, P. Entsie, Ofosua Adi-Dako, D. Kumadoh, Amanda Voado, Esther Aloni, Y. Osei
Conventionally, the microorganisms in liquid herbal mixtures are curtailed due to the fresh preparation before the administration to patients. Prolonged storage of liquid herbal preparations (due to commercialization) coupled with primeval routine production processes may increase the potential of microbial contamination in liquid herbal preparations. This study aims to analyze the microbial quality of 15 selected commercial liquid herbal preparations on the Ghanaian market. The samples were obtained from accredited pharmacies and herbal outlets in the Greater Accra region of Ghana, specifically Central Accra, between November 2019 and January 2020. The selected samples were coded HM1 to HM15. The effectiveness of the primary package of all samples was determined using the seal integrity test. The presence of microorganisms in the sampled brands was determined using nutrient agar. Isolated microorganisms from the sampled herbal mixtures were then identified using various selective media. All 15 samples (100%) passed the seal integrity test. Ten (67%) out of the 15 samples were contaminated with various microorganisms, whereas the remaining 5 samples (33%) were devoid of microorganisms. Eight (53%) out of the 15 samples were contaminated with fungi, with 3 (20%) being above the pharmacopeial limit. Six (40%) out of the 15 samples showed the presence of Escherichia coli. Out of the 15 sampled products, only HM11 contained Staphylococcus aureus. Similarly, only one sampled product (HM15) contained Salmonella typhi. None of the sampled products was contaminated with Pseudomonas aeruginosa. Ultimately, this study revealed that commercialized liquid herbal preparations in Ghana are likely to be contaminated with pathogenic microorganisms. Good manufacturing practices must therefore be strictly adhered to bring out the best in local herbal manufacturing industries.
通常,液体草药混合物中的微生物由于在给药给病人之前的新鲜制备而减少。液体草药制剂的长期储存(由于商业化)加上原始的常规生产工艺可能会增加液体草药制剂中微生物污染的可能性。本研究旨在分析加纳市场上精选的15种商业草药液体制剂的微生物质量。这些样本是在2019年11月至2020年1月期间从加纳大阿克拉地区(特别是阿克拉中部)的认可药店和草药店获得的。选取的样本编码为HM1 ~ HM15。使用密封完整性测试来确定所有样品的主包装的有效性。用营养琼脂测定样品中微生物的存在。然后用不同的选择性培养基从草药混合物中分离出微生物进行鉴定。15个样品全部(100%)通过密封完整性测试。15份样品中有10份(67%)被各种微生物污染,其余5份(33%)没有微生物。15份样品中有8份(53%)被真菌污染,3份(20%)超过药典限量。15个样本中有6个(40%)显示存在大肠杆菌。在15个抽样产品中,只有HM11含有金黄色葡萄球菌。同样,只有一种样品(HM15)含有伤寒沙门氏菌。所有样品均未被铜绿假单胞菌污染。最终,本研究揭示了加纳商业化的液体草药制剂可能被病原微生物污染。因此,必须严格遵守良好的生产规范,以使本地草药制造业发挥最佳作用。
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引用次数: 1
Novel Strategy for Optimizing the Antibacterial Activity of Psidium guajava Against Clinical Isolates of Escherichia coli, Staphylococcus aureus, Salmonella spp., and Streptococcus spp. 瓜石榴番石榴对大肠杆菌、金黄色葡萄球菌、沙门氏菌和链球菌临床分离株抑菌活性优化新策略
Pub Date : 2023-08-08 DOI: 10.36922/itps.1131
Mathew Gideon
The development of a new antibiotic is a challenging task, with an estimated failure rate of 95%. Minor changes in the chemical structure of a drug, such as stereochemistry, geometry, or functional group modifications, can significantly impact its medicinal activity. In this study, we aim to devise novel strategies for optimizing the antimicrobial properties of guava leaf extract through simple reactions, either by self-reaction or combination reactions with a reagent, drug, or different plant extract. Fourier transform infrared spectroscopy analysis revealed conjugation and formation of new functional groups in the prepared sample of Guava Guava (GG) and Guava Aspirin Guava (GAG), which were further confirmed by weight analysis. The results demonstrated that the antimicrobial activity of medicinal plants can be improved or optimized through simple reactions, such as combining the plant extract with a non-antimicrobial drug like aspirins or adding a small volume of concentrated sulfuric acid to the plant extract by heating at a temperature range of 100 – 110°C. Among the two combinatory methods used, GG exhibited better performance in inhibiting the growth of all tested bacterial strains at a concentration of 0.1 mg/mL compared to GAG at the same concentration, which inhibited the growth of only two bacterial strains: Escherichia coli and Streptococcus spp. These methods can be further explored and applied in various studies, including antifungal, anti-inflammatory, antiviral, and anticancer research, leveraging the availability and diverse range of natural products found in medicinal plants.
开发一种新的抗生素是一项具有挑战性的任务,估计失败率为95%。药物化学结构的微小变化,如立体化学、几何结构或官能团修饰,可显著影响其药物活性。在本研究中,我们旨在设计新的策略,通过简单的反应来优化番石榴叶提取物的抗菌性能,无论是自反应还是与试剂、药物或不同植物提取物的联合反应。傅里叶变换红外光谱分析发现,制备的番石榴(GG)和番石榴阿司匹林(GAG)样品中共轭并形成了新的官能团,并通过重量分析进一步证实了这一点。结果表明,通过简单的反应可以提高或优化药用植物的抗菌活性,如将植物提取物与非抗菌药物(如阿司匹林)联合使用,或在100 - 110℃的温度范围内加热加入少量浓硫酸。在两种组合方法中,GG在浓度为0.1 mg/mL时对所有被试菌株的生长均有较好的抑制作用,而GAG在相同浓度下仅对两种菌株的生长有抑制作用:这些方法可以进一步探索和应用于各种研究,包括抗真菌、抗炎、抗病毒和抗癌研究,利用药用植物中天然产物的可获得性和多样性。
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引用次数: 0
Evaluation of genotoxicity of (4-fluorophenyl) thiazolidin-4-one in CHO-K1 cells (4-氟苯基)噻唑烷-4- 1对CHO-K1细胞的遗传毒性评价
Pub Date : 2023-08-07 DOI: 10.36922/itps.0618
J. Mamilla, Kalpana Javvaji, Kavya Lekha Sunkara, U. Kosurkar, R. Kumbhare, S. Misra
4-thiazolidinones are five-membered heterocyclic ring compounds with diverse pharmacological impacts. In a previous study, we reported a series of newly synthesized derivatives of 4-thiazolidinones with different functional groups, which exhibited anticancer activity against ovarian (SKOV3) and cervical (HeLa) cancer cell lines. Among these derivatives, (4-fluorophenyl) thiazolidin-4-one (4-TH) demonstrated potent cytotoxic activity against SKOV3, with an IC50 value of 12.3 μM. However, it was also found to be extremely toxic to normal cells (CHO-K1) with an IC50 of 7.5 μM. Before considering its use in cancer research, it is crucial to gain a comprehensive understanding of its potential genotoxic effects on normal cells. In this study, we aimed to assess the in vitro cytogenetic toxicity of 4-TH using normal Chinese hamster ovary cells (CHO-K1). Referring to the IC50 of 4-TH, we selected three sub-lethal concentrations (2, 5, and 7.5 μM) and treated CHO-K1 cells for 24 h (one cell cycle duration) to estimate its dose-dependent induction of chromosome aberrations, and examine the effect of 4-TH on cell division, micronucleus induction potential and cell cycle arrest properties following standard protocols. The results showed that 4-TH was highly toxic to normal cells, as all three sublethal concentrations caused a statistically significant increase in the number of chromosomal aberrations (P < 0.001), formation of micronuclei (P < 0.01), and changes in the rate of cell division (mitotic index) (P < 0.05) compared to control. In addition, there was a significant increase in the number of cells in the G1 phase, indicating that all concentrations of 4-TH tested induced apoptosis. The evaluation of the cytotoxic, clastogenic, and aneugenic properties of 4-TH, a potent cytotoxic agent, will undoubtedly provide critical information for determining its safety and potential as an anticancer drug.
4-噻唑烷酮是具有多种药理作用的五元杂环化合物。在之前的研究中,我们报道了一系列新合成的具有不同官能团的4-噻唑烷酮衍生物,它们对卵巢癌(SKOV3)和宫颈癌(HeLa)癌细胞具有抗癌活性。其中,(4-氟苯基)噻唑烷-4-酮(4-TH)对SKOV3具有较强的细胞毒活性,IC50值为12.3 μM。然而,也发现它对正常细胞(CHO-K1)具有极大的毒性,IC50为7.5 μM。在考虑将其用于癌症研究之前,全面了解其对正常细胞的潜在遗传毒性作用是至关重要的。本研究以正常中国仓鼠卵巢细胞CHO-K1为实验对象,对4-TH的体外细胞遗传毒性进行了研究。参考4-TH的IC50,我们选择3种亚致死浓度(2、5和7.5 μM)处理CHO-K1细胞24 h(一个细胞周期持续时间),评估其诱导染色体畸变的剂量依赖性,并按照标准方案检测4-TH对细胞分裂、微核诱导电位和细胞周期阻滞特性的影响。结果表明,4-TH对正常细胞具有高度毒性,与对照组相比,3种亚致死浓度的4-TH均导致染色体畸变数(P < 0.001)、微核形成(P < 0.01)和细胞分裂率(有丝分裂指数)的变化(P < 0.05)显著增加。此外,G1期细胞数量显著增加,表明所有浓度的4-TH均可诱导细胞凋亡。4-TH是一种强效的细胞毒性药物,其细胞毒性、致裂性和非优生性的评估无疑将为确定其安全性和作为抗癌药物的潜力提供关键信息。
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引用次数: 0
Tryptophan metabolism in schizophrenia 精神分裂症的色氨酸代谢
Pub Date : 2023-08-04 DOI: 10.36922/itps.0435
Dilceu Silveira Tolentino Júnior, H. T. da Silva, Alessandro Martins Ribeiro, Tales Alexandre Ferreira-Aversi, L. C. Vilela
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引用次数: 0
Screening of Biological Activity of Selected Medicinal Orchids of Western Ghats, Karnataka, India 印度卡纳塔克邦西高止山脉部分药用兰花生物活性的筛选
Pub Date : 2023-07-24 DOI: 10.36922/itps.239
Hemanthkumar Madhavamurthy, Mahendra Chikkamadaiah, Sharada M. Suryanarayana
The present work was carried out to investigate the presence of bioactive compounds in selected medicinal orchids such as Dendrobium jerdonianum, Dendrobium barbatulum, Eria mysorensis, Bulbophyllum neilgherrense, and Pholidota pallida. The phytochemical, antibacterial, and antioxidant properties of the plants were evaluated using extracts obtained through chloroform, methanol, and aqueous extraction methods, respectively. The results of the phytochemical test showed the presence of diverse classes of secondary metabolites such as alkaloids, steroids, triterpenes, saponins, tannins, flavonoids, carbohydrates, resins, proteins, glycosides, and phenolics. The presence of these phytochemicals varied among different solvent extracts among the selected plants. Among the plant extracts tested, D. Jerdonianum and P. pallida offered significant p ≥ 0.05 antibacterial properties against Escherichia coli, Salmonella typhi, Bacillus subtilis, Shigella flexneri, and Pseudomonas aeruginosa with a minimum inhibitory concentration (MIC) ranging from 0.312 to 2.5 mg/mL. Among the plant extracts tested, methanol extract of Erythrina mysorensis (29.38%), B. neilgherrense (15.92%), P. pallida (13.84%), and D. barbatulum (13.10%) showed highest phenolic contents, followed by chloroform and aqueous extracts in all the plants. E. mysoriensis and D. jerdonianum exhibited highest antioxidant properties at 85.41% and 81.28% (with IC50 values of 36.49 and 43.72 μg/mL), respectively, while the positive control, gallic acid, displayed antioxidant properties of 94.61% (with an IC50 values of 30.49 μg/mL). These results warrant further studies on using these selected orchids for therapeutic and pharmaceutical applications.
本研究对一些药用兰花,如石斛、barbatulum石斛、Eria mysorensis、Bulbophyllum neilgherrense和Pholidota pallida的活性成分进行了研究。分别用氯仿、甲醇和水萃取法提取的提取物对植物的植物化学、抗菌和抗氧化性能进行了评价。植物化学试验结果显示,次生代谢产物有生物碱、类固醇、三萜、皂苷、单宁、黄酮类化合物、碳水化合物、树脂、蛋白质、糖苷和酚类物质等。这些植物化学物质的存在因所选植物的不同溶剂提取物而异。在被试植物提取物中,紫茎丹和苍绿假单胞菌对大肠杆菌、伤寒沙门氏菌、枯草芽孢杆菌、福氏志贺氏菌和铜绿假单胞菌的抑菌效果p≥0.05,最小抑菌浓度(MIC)在0.312 ~ 2.5 mg/mL之间。各植物提取物中酚类物质含量最高的是赤藓(Erythrina mysorensis)甲醇提取物(29.38%)、奈尔根(B. neilgherrense)(15.92%)、苍叶草(P. pallida)(13.84%)和barbatulum(13.10%),其次是氯仿和水提物。其抗氧化性能最高,分别为85.41%和81.28% (IC50值分别为36.49和43.72 μg/mL),阳性对照没食子酸的抗氧化性能为94.61% (IC50值为30.49 μg/mL)。这些结果为进一步研究将这些兰花用于治疗和药物应用提供了依据。
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INNOSC Theranostics and Pharmacological Sciences
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