Journal of applied biomedicine最新文献

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Neuropsychological tests and prediction of dementia in association with the degree of carotid stenosis. 神经心理学测试和预测痴呆与颈动脉狭窄程度的关系
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-12-01 DOI: 10.32725/jab.2022.018
Ondrej Machaczka, David Skoloudik, Jana Janoutova, Martin Roubec, Eva Reiterova, Martina Kovalova, Anna Zatloukalova, Petr Ambroz, Vladimir Janout
{"title":"Neuropsychological tests and prediction of dementia in association with the degree of carotid stenosis.","authors":"Ondrej Machaczka,&nbsp;David Skoloudik,&nbsp;Jana Janoutova,&nbsp;Martin Roubec,&nbsp;Eva Reiterova,&nbsp;Martina Kovalova,&nbsp;Anna Zatloukalova,&nbsp;Petr Ambroz,&nbsp;Vladimir Janout","doi":"10.32725/jab.2022.018","DOIUrl":"https://doi.org/10.32725/jab.2022.018","url":null,"abstract":"<p><p>This study constitutes a cross sectional analysis of the association between cognitive impairment defined by neuropsychological tests and carotid stenosis. The main objective was to compare the results of the Mini-Mental State Examination (MMSE) and Addenbrooke's Cognitive Examination-Revised (ACE-R) with regard to the degree of carotid stenosis. The sample comprised 744 patients who underwent a carotid duplex ultrasound and cognitive function testing (by ACE-R and MMSE). A multivariable analysis of potential confounding factors was completed. The significance of the different number of positive (MMSE ≤ 27, ACE-R ≤ 88) and negative (MMSE ≥ 28, ACE-R ≥ 89) results of the neuropsychological tests was analysed with regard to the degree of carotid stenosis (50-99%). Neuropsychological test results were also compared between carotid stenosis of 50-69%, 70-89%, and 90-99%. For both the MMSE and ACE-R, a difference was observed between positive and negative test results when higher degrees of stenosis were present. However, for the ACE-R only, more severe stenosis (80-89%, 90-99%) was predominantly associated with positive test results (p-value < 0.017). The same dependence for ACE-R (although not statistically significant) was observed in the group of patients without an ischemic stroke (confounding factor). In the case of the MMSE and more severe stenosis, negative results predominated, regardless of the confounding factor. There were no statistically significant differences in test results between carotid stenosis of 50-69%, 70-89%, and 90-99%. The results suggest that for assessing the early risk of cognitive impairment in patients with carotid atherosclerosis, the ACE-R appears more suitable than the MMSE.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 4","pages":"115-123"},"PeriodicalIF":1.3,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9119635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ADIPOQ-rs2241766 polymorphism is associated with changes in cholesterol levels of Mexican adolescents. ADIPOQ-rs2241766多态性与墨西哥青少年胆固醇水平的变化有关。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-12-01 DOI: 10.32725/jab.2022.017
Rafael Baltazar Reyes Leon-Cachon, Mauricio Andres Salinas-Santander, Daniela Alejandra Aguilar-Tamez, Paola MarianaValdez-Ortiz, Clara Patricia Rios-Ibarra, Ana Cecilia Cepeda-Nieto, Victor de Jesus Suarez-Valencia, Jesus Antonio Morlett-Chavez
{"title":"ADIPOQ-rs2241766 polymorphism is associated with changes in cholesterol levels of Mexican adolescents.","authors":"Rafael Baltazar Reyes Leon-Cachon,&nbsp;Mauricio Andres Salinas-Santander,&nbsp;Daniela Alejandra Aguilar-Tamez,&nbsp;Paola MarianaValdez-Ortiz,&nbsp;Clara Patricia Rios-Ibarra,&nbsp;Ana Cecilia Cepeda-Nieto,&nbsp;Victor de Jesus Suarez-Valencia,&nbsp;Jesus Antonio Morlett-Chavez","doi":"10.32725/jab.2022.017","DOIUrl":"https://doi.org/10.32725/jab.2022.017","url":null,"abstract":"<p><strong>Background: </strong>The ADIPOQ gene encodes a fat-derived protein hormone with a preponderant role in the homeostasis of glucose and fatty acids. However, previous association studies between ADIPOQ genetic variants and metabolic disorders have shown controversial results. In this study, we evaluated the effect of the ADIPOQ-rs2241766 polymorphism on diverse biochemical parameters (i.e., insulin resistance, atherogenic index, overweight and obesity) in an adolescent population from Mexico.</p><p><strong>Methods: </strong>A cross-sectional study with convenience sampling was carried out in 356 adolescents from Northern Mexico. They were classified by sex and BMI-z score. The biochemical parameters were measured from blood samples using conventional methods. Genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP).</p><p><strong>Results: </strong>In low and normal weight groups, GG carriers had a significantly higher cholesterol level (P ≤ 0.05) than TG and TT carriers. However, there was no association between ADIPOQ-rs2241766 polymorphism and atherogenic index, overweight, or obesity.</p><p><strong>Conclusions: </strong>Our findings suggest that the cholesterol levels are under the influence of the ADIPOQ-rs2241766 polymorphism in Mexican adolescents and may explain how ADIPOQ variants increase the risk of developing metabolic disorders. Nevertheless, further studies are required to rule out the influence of other genetic and non-genetic factors.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 4","pages":"146-153"},"PeriodicalIF":1.3,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9119638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Exenatide prevents statin-related LDL receptor increase and improves insulin secretion in pancreatic beta cells (1.1E7) in a protein kinase A-dependent manner. 艾塞那肽以蛋白激酶a依赖的方式阻止他汀类药物相关LDL受体增加并改善胰腺β细胞的胰岛素分泌(1.1E7)。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-12-01 DOI: 10.32725/jab.2022.015
Lukasz Buldak, Grzegorz Machnik, Estera Skudrzyk, Aleksandra Boldys, Mateusz Maliglowka, Michal Kosowski, Marcin Basiak, Rafal Jakub Buldak, Boguslaw Okopien
{"title":"Exenatide prevents statin-related LDL receptor increase and improves insulin secretion in pancreatic beta cells (1.1E7) in a protein kinase A-dependent manner.","authors":"Lukasz Buldak,&nbsp;Grzegorz Machnik,&nbsp;Estera Skudrzyk,&nbsp;Aleksandra Boldys,&nbsp;Mateusz Maliglowka,&nbsp;Michal Kosowski,&nbsp;Marcin Basiak,&nbsp;Rafal Jakub Buldak,&nbsp;Boguslaw Okopien","doi":"10.32725/jab.2022.015","DOIUrl":"https://doi.org/10.32725/jab.2022.015","url":null,"abstract":"<p><p>Statins are primary drugs in the treatment of hyperlipidemias. This group of drugs is known for its beneficial pleiotropic effects (e.g., reduction of inflammatory state). However, a growing body of evidence suggests its diabetogenic properties. The culpable mechanism is not completely understood and might be related to the damage to pancreatic beta cells. Therefore, we conceived an in vitro study to explore the impact of atorvastatin on pancreatic islet beta cells line (1.1.E7). We evaluated the influence on viability, insulin, low-density lipoprotein (LDL) receptor, and proprotein convertase subtilisin/kexin type 9 (PCSK9) expression. A significant drop in mRNA for proinsulin and insulin expression was noted. Concurrently, a rise in LDL receptor at the protein level in cells exposed to atorvastatin was noted. Further experiments have shown that exenatide - belonging to glucagon-like peptide 1 (GLP-1) analogs that are used in a treatment of diabetes and known for its weight reducing properties - can alleviate the observed alterations. In this case, the mechanism of action of exenatide was dependent on a protein kinase A pathway. In conclusion, our results support the hypothesis that statin may have diabetogenic properties, which according to our study is related to reduced insulin expression. The concomitant use of GLP-1 receptor agonist seemed to successfully revert insulin expression.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 4","pages":"130-140"},"PeriodicalIF":1.3,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9125935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Topical application of indigo-plant leaves extract enhances healing of skin lesion in an excision wound model in rats. 局部应用靛蓝植物叶提取物促进大鼠皮肤损伤的愈合。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-12-01 DOI: 10.32725/jab.2022.014
Mohamed A Saleh, Ahmed A Shabaan, Michel May, Youssif M Ali
{"title":"Topical application of indigo-plant leaves extract enhances healing of skin lesion in an excision wound model in rats.","authors":"Mohamed A Saleh,&nbsp;Ahmed A Shabaan,&nbsp;Michel May,&nbsp;Youssif M Ali","doi":"10.32725/jab.2022.014","DOIUrl":"https://doi.org/10.32725/jab.2022.014","url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to evaluate the pharmacological role of indigo extract in accelerating the wound healing in a rat model.</p><p><strong>Methods: </strong>Female Sprague-Dawley rats were anesthetized with ketamine (30 mg/kg, i.p.) and the full thickness of the marked skin was then cut carefully and wounds were left undressed. Indigo extract (5%) in PBS was applied topically twice daily until healing was complete. A control group of rats was treated with povidone-iodide (Betadine®). Rats treated with phosphate buffer saline were used as a negative control group. The rate of wound healing was assessed daily. Histopathological examination of skin sections were qualitatively assessed by independent evaluators. The inflammatory and apoptotic markers were assessed in skin tissue homogenates using ELISA.</p><p><strong>Results: </strong>Histopathology data showed that applying indigo to skin wounds enhanced the healing process, resulting in a significant decrease in dermal inflammation in comparison to untreated rats. Topical application of indigo significantly increased antioxidant enzyme activities with reduced malondialdehyde (MDA) levels in wound tissues. The levels of matrix metalloproteases-2 and -9 were significantly lower with an accompanied increase in the level of TGF-β1 in skin tissues from rats treated with indigo compared to the control group treated with PBS.</p><p><strong>Conclusions: </strong>The antioxidant and anti-inflammatory properties of indigo leaf extract accelerate the healing of skin injuries.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 4","pages":"124-129"},"PeriodicalIF":1.3,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9125934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of plasma catecholamines in patients with dysmetabolic iron overload syndrome. 代谢异常铁超载综合征患者血浆儿茶酚胺的评估。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-12-01 DOI: 10.32725/jab.2022.016
Hany William Z Hanna, Heba N Baz, Lika'a Fasih Y Al-Kzayer, Hemmat E El Haddad, Fatma El-Mougy
{"title":"Assessment of plasma catecholamines in patients with dysmetabolic iron overload syndrome.","authors":"Hany William Z Hanna,&nbsp;Heba N Baz,&nbsp;Lika'a Fasih Y Al-Kzayer,&nbsp;Hemmat E El Haddad,&nbsp;Fatma El-Mougy","doi":"10.32725/jab.2022.016","DOIUrl":"https://doi.org/10.32725/jab.2022.016","url":null,"abstract":"<p><strong>Background: </strong>Dysmetabolic iron overload syndrome (DIOS) is characterized by hyperferritinemia and normal transferrin saturation level with components of metabolic syndrome (MS). Among cases of MS, we determined those with DIOS and their characterizations, then we evaluated the association between plasma catecholamines status and hypertension in DIOS.</p><p><strong>Methods: </strong>We compared 101 hypertensive patients with 50 healthy participants (control group). Iron (iron, transferrin, and ferritin), insulin, and plasma catecholamine (adrenaline, noradrenaline, and dopamine), profiles were measured for both groups. Homeostasis model assessment of insulin resistance index and transferrin saturation were also calculated.</p><p><strong>Results: </strong>Out of 101 hypertensive patients, 64 were diagnosed with MS, and 6 of the latter met the DIOS diagnostic criteria. Significantly, DIOS patients were older and had lower body mass index (BMI) compared with hypertensive non-DIOS patients with p-values of (0.026), and (0.033), respectively. Adrenaline, noradrenaline, and dopamine levels did not differ significantly between DIOS and non-DIOS patients.</p><p><strong>Conclusions: </strong>Of the MS patients, 9.3% were diagnosed with DIOS. Accordingly, complete iron profiling should be performed routinely in the cases of MS for early diagnosis of DIOS, to prevent future complications. Further studies are required to test the hypothesis linking older age and lower BMI with the pathogenesis of DIOS.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 4","pages":"141-145"},"PeriodicalIF":1.3,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9119637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photodynamic therapy in breast cancer treatment. 光动力疗法在乳腺癌治疗中的应用。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-10-01 DOI: 10.32725/jab.2022.013
Joanna Gustalik, David Aebisher, Dorota Bartusik-Aebisher
{"title":"Photodynamic therapy in breast cancer treatment.","authors":"Joanna Gustalik,&nbsp;David Aebisher,&nbsp;Dorota Bartusik-Aebisher","doi":"10.32725/jab.2022.013","DOIUrl":"https://doi.org/10.32725/jab.2022.013","url":null,"abstract":"<p><p>Breast cancer is a serious public problem in modern society. Photodynamic therapy (PDT) is increasingly used in modern medicine. Currently, PDT is an innovative method of treating breast cancer. Irreversible damage to neoplastic tissues is associated with the use of physicochemical processes. Generating cytotoxic reactive oxygen species [singlet oxygen (1O2)] is leading to tumor cell death. At the same time, valuable information can be extracted from breast cancer cells. Photogenerated 1O2 is the major factor responsible for cell necrosis during PDT. 1O2 can react rapidly intracellularly with all organic substances. The use of photodynamic therapy on tissues in vitro creates conditions for testing various types of solutions and implementing them in in vivo treatment. This article is a review of recent advances in PDT for treatment of breast cancer. PDT is a novel cancer diagnostic and cancer treatment therapy. Therefore, an understanding of the possibility to generate a toxic form of 1O2 is necessary. The knowledge gained from the basics of PDT in vitro can be useful in biomedical applications in vivo. The current literature mentions PDT in the treatment of cancers located very deep within the human body. Therefore, the development of agents used to deliver 1O2 to the deep cancerous tissue is a new challenge which can have an efficient impact on this discipline. This review covers the literature between 2000-2022.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 3","pages":"98-105"},"PeriodicalIF":1.3,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9142692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Heart rate dynamics in the prediction of coronary artery disease and myocardial infarction using artificial neural network and support vector machine. 基于人工神经网络和支持向量机的心率动态预测冠心病和心肌梗死。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-06-01 Epub Date: 2022-06-21 DOI: 10.32725/jab.2022.008
Rahul Kumar, Yogender Aggarwal, Vinod Kumar Nigam
{"title":"Heart rate dynamics in the prediction of coronary artery disease and myocardial infarction using artificial neural network and support vector machine.","authors":"Rahul Kumar,&nbsp;Yogender Aggarwal,&nbsp;Vinod Kumar Nigam","doi":"10.32725/jab.2022.008","DOIUrl":"https://doi.org/10.32725/jab.2022.008","url":null,"abstract":"BACKGROUND Atherosclerosis leads to coronary artery disease (CAD) and myocardial infarction (MI), a major cause of morbidity and mortality worldwide. The computer-aided prognosis of atherosclerotic events with the electrocardiogram (ECG) derived heart rate variability (HRV) can be a robust method in the prognosis of atherosclerosis events. METHODS A total of 70 male subjects aged 55 ± 5 years participated in the study. The lead-II ECG was recorded and sampled at 200 Hz. The tachogram was obtained from the ECG signal and used to extract twenty-five HRV features. The one-way Analysis of variance (ANOVA) test was performed to find the significant differences between the CAD, MI, and control subjects. Features were used in the training and testing of a two-class artificial neural network (ANN) and support vector machine (SVM). RESULTS The obtained results revealed depressed HRV under atherosclerosis. Accuracy of 100% was obtained in classifying CAD and MI subjects from the controls using ANN. Accuracy was 99.6% with SVM, and in the classification of CAD from MI subjects using SVM and ANN, 99.3% and 99.0% accuracy was obtained respectively. CONCLUSIONS Depressed HRV has been suggested to be a marker in the identification of atherosclerotic events. The good accuracy observed in classification between control, CAD, and MI subjects, revealed it to be a non-invasive cost-effective approach in the prognosis of atherosclerotic events.","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 2","pages":"70-79"},"PeriodicalIF":1.3,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40122129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Exploring the therapeutic potential of acetonic plant extracts in the healing of skin wounds infected with multidrug resistant pathogens. 探索丙酮植物提取物在多药耐药病原菌感染皮肤伤口愈合中的治疗潜力。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-06-01 Epub Date: 2022-06-06 DOI: 10.32725/jab.2022.006
Maha A Khalil, Eman H F Abd El-Zaher, Olaa Abd El-Salam, Sameh S Ali
{"title":"Exploring the therapeutic potential of acetonic plant extracts in the healing of skin wounds infected with multidrug resistant pathogens.","authors":"Maha A Khalil,&nbsp;Eman H F Abd El-Zaher,&nbsp;Olaa Abd El-Salam,&nbsp;Sameh S Ali","doi":"10.32725/jab.2022.006","DOIUrl":"https://doi.org/10.32725/jab.2022.006","url":null,"abstract":"<p><p>Open wounds are easily susceptible to infection by multi-drug resistant (MDR) pathogens. The emergence of MDR super bacteria such as Pseudomonas aeruginosa, Staphylococcus aureus, Enterococcus spp, fungi such as Aspergillus niger and Candida spp, has been identified to significantly increase the incidence rate. Therefore, it is necessary to develop a suitable barrier to prevent infection and enhance wound healing. On the other hand, medicinal plants could represent a significant source of new antimicrobial drugs for combating MDR pathogens. Out of 60 clinical skin burn cases, 51 patients (85%) had polymicrobial infections, while the remaining had monomicrobial infections. Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumonia were identified as the most common bacterial isolates based on morphological and biochemical tests. However, Candida albicans, Candida parasitosis, Candida glabrata, Candida famata, Aspergillus niger, and Exophilia spinifera were the most common fungal isolates found in skin burn cases. MDR classification was reported in 21 of the 39 bacterial isolates and 8 of the 27 fungal isolates. The antimicrobial activity of tested acetonic plant extracts rosemary, henna, and licorice against MDR isolates was compared to the commercial antibiotic agents. Acetonic rosemary extract outperformed henna and licorice extracts in antibacterial activity, while licorice extract outperformed henna and rosemary extracts on antifungal activity. As a result, rosemary and licorice extracts were chosen to prepare a topical cream for further in vivo wound healing and histopathology. Based on the antimicrobial potential of acetonic plant extracts against MDR isolates, BI-41 and FI-17 were chosen for in vivo wound healing. BI-41 stands for the molecularly identified species Pseudomonas aeruginosa SSM-15, while FI-17 stands for molecularly identified species Aspergillus niger SSM-27. In vivo testing showed that both cream formulas had excellent healing properties when administered topically. In vivo histopathological examination revealed that acetonic rosemary and licorice extract could be promising for wound healing, combating MDR pathogens of burn wound infections.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 2","pages":"45-55"},"PeriodicalIF":1.3,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40121671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Kilohertz alternating current neuromodulation of the pudendal nerves: effects on the anal canal and anal sphincter in rats. 千赫交流电对阴部神经的神经调节:对大鼠肛管和肛门括约肌的影响。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-06-01 Epub Date: 2022-06-21 DOI: 10.32725/jab.2022.009
Rosa L Coolen, Koen M Emmer, Panagiota I Spantidea, Els van Asselt, Jeroen R Scheepe, Wouter A Serdijn, Bertil F M Blok
{"title":"Kilohertz alternating current neuromodulation of the pudendal nerves: effects on the anal canal and anal sphincter in rats.","authors":"Rosa L Coolen,&nbsp;Koen M Emmer,&nbsp;Panagiota I Spantidea,&nbsp;Els van Asselt,&nbsp;Jeroen R Scheepe,&nbsp;Wouter A Serdijn,&nbsp;Bertil F M Blok","doi":"10.32725/jab.2022.009","DOIUrl":"https://doi.org/10.32725/jab.2022.009","url":null,"abstract":"<p><p>The first two objectives were to establish which stimulation parameters of kilohertz frequency alternating current (KHFAC) neuromodulation influence the effectiveness of pudendal nerve block and its safety. The third aim was to determine whether KHFAC neuromodulation of the pudendal nerve can relax the pelvic musculature, including the anal sphincter. Simulation experiments were conducted to establish which parameters can be adjusted to improve the effectiveness and safety of the nerve block. The outcome measures were block threshold (measure of effectiveness) and block threshold charge per phase (measure of safety). In vivo, the pudendal nerves in 11 male and 2 female anesthetized Sprague Dawley rats were stimulated in the range of 10 Hz to 40 kHz, and the effect on anal pressure was measured. The simulations showed that block threshold and block threshold charge per phase depend on waveform, interphase delay, electrode-to-axon distance, interpolar distance, and electrode array orientation. In vivo, the average anal pressure during unilateral KHFAC stimulation was significantly lower than the average peak anal pressure during low-frequency stimulation (p < 0.001). Stimulation with 20 kHz and 40 kHz (square wave, 10 V amplitude, 50% duty cycle, no interphase delay) induced the largest anal pressure decrease during both unilateral and bilateral stimulation. However, no statistically significant differences were detected between the different frequencies. This study showed that waveform, interphase delay and the alignment of the electrode along the nerve affect the effectiveness and safety of KHFAC stimulation. Additionally, we showed that KHFAC neuromodulation of the pudendal nerves with an electrode array effectively reduces anal pressure in rats.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 2","pages":"56-69"},"PeriodicalIF":1.3,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40121672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rare case of alimentary butylbiphenyl intoxication. 罕见的消化道丁基联苯中毒病例。
IF 1.3 4区 医学
Journal of applied biomedicine Pub Date : 2022-06-01 Epub Date: 2022-06-10 DOI: 10.32725/jab.2022.007
Damian Simcik, Viktor Vorisek, Martin Jakl
{"title":"Rare case of alimentary butylbiphenyl intoxication.","authors":"Damian Simcik,&nbsp;Viktor Vorisek,&nbsp;Martin Jakl","doi":"10.32725/jab.2022.007","DOIUrl":"https://doi.org/10.32725/jab.2022.007","url":null,"abstract":"<p><strong>Background: </strong>Unexpected accidental intoxication by uncommon industrial substances is a rare, but challenging and perilous event. To our best knowledge, this is the first reported case of 3,4',5,6'-tetra-tert-butylbiphenyl-2,3'-diol intoxication.</p><p><strong>Case report: </strong>A 20-year-old man was referred to the Department of Emergency Medicine after seven days of nausea and vomiting triggered by drinking mead. Very high doses of 3,4',5,6'-tetra-tert-butylbiphenyl-2,3'-diol were detected in mead, blood, and urine samples. To prove the intoxication, gas chromatography - ion trap was performed. Symptoms of intoxication persisted for two weeks without significant organ damage. The case report illustrates the need for a multistep approach, focused mainly on the analysis of possible sources of intoxication.</p>","PeriodicalId":14912,"journal":{"name":"Journal of applied biomedicine","volume":"20 2","pages":"80-82"},"PeriodicalIF":1.3,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40122130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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