A Young Healthy Woman with Supraventricular Tachycardia Reveals an Underlying Left Ventricular Non-compaction Cardiomyopathy: A Rare Case Report

LVNC (left ventricular non-compaction) is a rare congenital cardiomyopathy with a reported incidence of 0.05% in adults. It can occur in isolation or affect both ventricles. It’s characterized by prominent LV trabeculae and deep intertrabecular recesses which are filled with blood from the ventricular cavity without evidence of communication to the epicardial coronary artery system. Frequent premature supra ventricular tachycardia as unique finding in LVNC cardiomyopathy is rare manifestation of this disease. We report a case of a frequent persistent supraventricular tachycardia as first manifestation of a patient with LVNC cardiomyopathy in a young healthy woman who despite radio frequency ablation therapy of the supraventricular tachycardia remains symptomatic. The patient was later placed on medical therapy based on a non-cardio selective beta-blocker with a good clinical outcome without recurrent of supra-ventricular arrythmias.

The relationship between premature ventricular complexes and index of cardiac-electrophysiological balance

SUMMARY OBJECTIVE: Premature ventricular complexes are common in healthy individuals' ambulatory monitoring. The index of cardiac-electrophysiological balance may predict malignant ventricular arrhythmias. This study investigated the relation between Premature ventricular complex burden and index of cardiac-electrophysiological balance in 24-h Holter monitoring. METHODS: A total of 257 patients who were admitted to a cardiology outpatient clinic without structural heart disease and underwent 24-h Holter monitoring were included in the study. Demographic features, laboratory parameters, and electrocardiographic and echocardiographic values of all patients were obtained from the hospital database. Patients were categorized into the following four groups according to their premature ventricular complex burden: ≤5% premature ventricular complexes as group 1, >6 and ≤10% premature ventricular complexes as group 2, >11 and ≤20% premature ventricular complexes as group 3, and >20% premature ventricular complexes as group 4. QRS, QT, and T peak to end interval were measured by resting electrocardiography. QT interval was corrected using Bazett's formula. T peak to end interval/QT, T peak to end interval/corrected QT interval, index of cardiac-electrophysiological balance, and corrected index of cardio-electrophysiological balance ratios were calculated. RESULTS: There was no significant difference between groups regarding cardiovascular risk factors. In group 4, beta-blocker usage was significantly higher, and the serum magnesium levels were significantly lower than in other groups. There was no difference in QT duration or index of cardiac-electrophysiological balance values; however, corrected index of cardio-electrophysiological balance was significantly lower in the highest premature ventricular complex group (5.1, 5.1, 4.8, 4.7, p=0.005). In multivariate backward logistic regression analyses, it was found that lower corrected index of cardio-electrophysiological balance, lower serum magnesium levels, lower serum creatinine levels, larger left atrium size, and higher T peak to end interval were associated with higher premature ventricular complexes. CONCLUSION: Corrected index of cardio-electrophysiological balance is a novel and noninvasive marker that can predict premature ventricular complex burden in patients with structurally normal hearts.

Predictive value of dynamic electrocardiography for myocardial ischemia and arrhythmia in patients with coronary heart disease / 中国基层医药

Objective:To investigate the predictive value of dynamic electrocardiography (ECG) for myocardial ischemia and arrhythmia in patients with coronary heart disease.Methods:A total of 87 patients with coronary heart disease who received treatment in Wenling Hospital of Traditional Chinese Medicine from January 2020 to January 2022 were included in this study. These patients were divided into a conventional ECG group (group A, n = 40) and a dynamic ECG group (group B, n = 47) according to different examination methods. The detection rate of myocardial ischemia in the two groups was determined. The diagnostic efficacy of routine ECG and dynamic ECG for myocardial ischemia was analyzed according to the results of coronary angiography. The detection rate of arrhythmia was determined in each group. Patient satisfaction was compared between the two groups. Results:There was no significant difference in the total detection rate of myocardial ischemia between the two groups ( P = 0.154). The detection rate of asymptomatic myocardial ischemia in group B [25% (25/47)] was significantly higher than that in group A [10% (10/40), χ2 = 5.24, P = 0.020). According to the results of coronary angiography, the detection rates of myocardial ischemia in group A and group B were 68% (27/40) and 87% (41/47), respectively. The sensitivity, specificity, and accuracy of group B in diagnosing myocardial ischemia were 80% (33/41), [67% (4/6), and 74% (35/47), respectively, all of which were significantly higher than 74% (20/27), [46% (6/13), 68% (27/40) in group A ( χ2 = 8.03, 5.89, 5.03, P = 0.003, 0.012, 0.005). The detection rates of premature ventricular contraction in bi-triplet rhythm, frequent paired premature atrial contraction in bi-triplet rhythm, right bundle-branch block, atrioventricular block, supraventricular tachycardia in group B were significantly higher compared with group A ( χ2 = 10.78, P = 0.001). According to the results of coronary angiography, the detection rates of arrhythmia in groups A and B were 65% (26/40) and 79% (37/47), respectively. The sensitivity, specificity, and accuracy of diagnosing arrhythmia in coronary heart disease in group B were 86% (32/37), 40% (4/10), and 81% (38/47), respectively. The sensitivity and accuracy of diagnosing arrhythmia in coronary heart disease in group B were significantly higher than those in group A [58% (15/26), 55% (22/40), χ2 = 7.30, 4.90, P = 0.005, 0.010). Patient satisfaction in group B [87% (41/47)] was significantly higher than that in group A [65% (26/40), χ2 = 6.24, P = 0.044]. Conclusion:Compared with conventional ECG detection, dynamic ECG has substantially higher detection and diagnosis rates of myocardial ischemia and arrhythmia, as well as a higher patient satisfaction rate, in patients with coronary heart disease, in particular in those with asymptomatic myocardial ischemia.

Association between ventricular premature contraction burden and ventricular repolarization duration

SUMMARY OBJECTIVE: Premature ventricular contraction is generally known as benign in the absence of structural heart disease; however, premature ventricular contraction-induced left ventricular systolic dysfunction or ventricular arrhythmias are defined in some cases. Ventricular repolarization duration differs between myocardial cells, which causes myocardial electrical heterogeneity and is thought to be responsible for ventricular arrhythmias. In our study, we aimed to evaluate the association of ventricular repolarization parameters including Tp-Te interval, Tp-Te/QT ratio, and QRS-T angle with premature ventricular contraction frequency in patients with premature ventricular contraction burden. METHODS: A total of 80 subjects who were admitted to our cardiology department and underwent 24-h electrocardiography Holter monitoring were included. Patients were divided into two groups: group 1 is defined as premature ventricular contraction burden that had frequent premature ventricular contraction ≥1% in 24-h Holter monitoring, and group 2 is defined as rare premature ventricular contraction <1% in 24-h Holter monitoring. RESULTS: Tp-Te interval and Tp-Te/QT ratio are statistically significantly prolonged in the premature ventricular contraction burden group than in the control group (85.3±13.9 vs. 65.7±11.9, p<0.001; 0.19±0.03 vs. 0.15±0.02, p<0.001, respectively). QRS-T angle was statistically significantly abnormal in the premature ventricular contraction burden group (p=0.024). CONCLUSION: Increased Tp-Te interval and widened QRS-T angle are associated with ventricular arrhythmias and might be used for the prediction of premature ventricular contraction burden in patients with premature ventricular contraction in electrocardiography in the absence of 24-h Holter monitoring.

ATYPICAL MANIFESTATIONS OF SUBACUTE SCLEROSING PANENCEPHALITIS: CASE SERIES

Subacute Sclerosing Panencephalitis (SSPE) is a rare, progressive degenerative disease of the brain caused by reactivation of aberrant measles virus. Classical symptoms of SSPE are described as behavioral changes, declining scholastic performance, myoclonic jerks etc. However, at times it presents with varied atypical manifestations, which makes diagnosis dif?cult. Hereby we report two patients with unusual manifestations of SSPE. In ?rst case, 14-year-old boy presented with recurrent falls of 9 months duration. Initially, it was 1-2 times per week, progressing over 9 months to frequency of 40-50 falls per day. In second case, 21-year-old gentleman presented with behavioral changes and memory disturbance of 1-year duration. However, his family members noticed worsening of symptoms 1 month before presentation as he started developing involuntary jerky movements involving the right upper and lower limb. In both of them electroencephalogram (EEG) was showing long interval periodic discharges and cerebrospinal ?uid was showing elevated titers of anti-measles antibody overall suggesting SSPE. Hence it needs much attention for atypical presentations and also considering SSPE in differential diagnosis of unsolved atypical neurological presentations.

Ablación exitosa con radiofrecuencia a través de la cúspide coronariana derecha de un complejo ventricular prematuro parahisiano / Successful radiofrequency ablation through the right coronary cups of a parahisian premature ventricular complexes

Resumen Los complejos ventriculares prematuros (CVP) son hallazgos frecuentes en individuos con o sin enfermedad estructural cardiaca. Los CVP cuyo origen se localiza en la región parahisiana son poco frecuentes y su manejo a través de ablación con catéter de radiofrecuencia es un reto, pues su localización favorece un alto riesgo de desarrollo de bloqueo aurículo-ventricular. Se describen dos casos de pacientes con CVP parahisianos llevados a ablación con catéter de radiofrecuencia.

Abstract Premature ventricular complexes (PVC) are common findings in patients with or without structural heart disease. Parahisian PVC are uncommon and their management through radiofrequency catheter ablation remains a challenge, since their location favors a high risk for developing atrioventricular block. Two cases of patients with parahisian PVC undergoing radiofrequency catheter ablation are described.

Molecular docking and Antibacterial activities of Cobalt (II) complexes derived from precursors of Hydrazones

The Schiff base ligands in their deprotonated forms have been utilized to synthesize thermodynamically and kinetically stabilized Cobalt(II) complexes. In the complexes, cobalt ion present is in distorted octahedral arrangement and is coordinated by four tridentate ligands in complexes. The synthesized Schiff base ligands coordinate with Cobalt (II) ion through four azomethine nitrogen atoms and two sulfur atoms developing a 6- membered chelate ring. Synthesized Cobalt(II) complexes via hexadentate ligands have been characterized thoroughly through various spectroscopic techniques like FT-IR, UV-Vis, 1HNMR, TGA, TEM, SEM, Particle size, Elemental analysis (C, H, N, Co, S) and conductivity measurements. All Cobalt(II) complexes have been evaluated for in vitro antimicrobial activity against isolated bacterial strains of E. coli (MTCC-1687), E. faecalis (MTCC-439), S. aureus (MTCC-737) and MR S. aureus (Indigenous). All Cobalt complexes show mild to moderate antibacterial activity. The MIC ranged from 50 µg/ mL to 3.125 µg/ mL. All Cobalt(II) complexes displayed in-vitro antibacterial activity against both gram-positive and gram-negative bacterial strains. It may be proved that the antibacterial activity of the complexes is related to the cell wall structure of the tested bacteria. In-vitro toxicity tests explained the Cobalt complexes were less cytotoxic than the Vancomycin drug on A431 cancer cell lines and the results explain that synthesized Cobalt complexes can act as potent antimicrobial agents and can be considered as a good drug candidate for medicinal chemistry researchers.

Syntheses and magnetic properties of substituted bis-indacenyl bi-metallic complexes & application / Síntesis y propiedades magnéticas de complejos bimetálicos de bis-indacenilo sustituido y su aplicación / Sínteses e propriedades magnéticas de complexos bimetálicos bis-indaceníli-cossubstituídos e aplicação

Abstract Organometallic compounds, Bis (2,4,6,8 teramethyl-indacenyl) di Iron (1), Bis (2,4,6,8 teramethyl s-indacenyl) mono iron, mono cobalt (2), and Bis (2,6 diethyl-4,8-dimethyl-s-indacenyl) di cobalt (3) were synthesised by means of salt elimination strategy, using Fe(II) and Co(II) salts. The compounds were characterised through spectroscopic and electrochemical methods. Magnetic measurements were carried out by Physical Property Measurement System (PPMS). Mossbauer spectroscopic data reveals that in all compounds, surprisingly, Iron is in +3 oxidation state. DFT calculations have been carried out to understand the change in the oxidation state of a metal. DFT study confirms the electron transfer nature of ligand to metal. Cyclic voltametric study on these compounds shows a large separation (ΔE>800mV) between two oxidation peaks confirming the strong interaction between the metal centres. Magnetic measurements on these organometallic compounds reveals that they exhibit a ferrimagnetic behaviour at temperatures below 40 K.

Resumen En este trabajo se sintetizaron los compuestos organometálicos Bis (2,4,6,8 terametil-indacenil) férrico (1), Bis (2,4,6,8 terametil s-indacenil) ferroso, cobaltoso (2) y Bis (2,6 dietil-4,8-dimetil-s-indacenil) di cobalto (3) mediante la estrategia de eliminación de sales, utilizando sales de Fe(II) y Co(II).Los compuestos se caracterizan por métodos espectroscópicos y electroquímicos. Las mediciones magnéticas se llevaron a cabo mediante el sistema de medición de propiedades físicas (PPMS). Los datos espectroscópicos Mossbauer revelan que, en todos los compuestos, sorprendentemente, el hierro se encuentra en el estado de oxidación +3. También se realizaron cálculos DFT para comprender el cambio en el estado de oxidación de los metales. El estudio DFT confirmó la naturaleza de transferencia de electrones del ligando al metal. El estudio voltamperométrico cíclico de estos compuestos muestra una gran separación (ΔE>800mV) entre los dos picos de oxidación que confirman la fuerte interacción entre los centros metálicos. Las mediciones magnéticas de estos compuestos organometálicos revelan que presentan un comportamiento ferrimagnético a temperaturas inferiores a 40 K.

Resumo Compostos organometálicos, Bis (2,4,6,8 terametil-indacenil) di ferro (1), Bis (2,4,6,8 terametil s-indacenil) mono ferro, mono cobalto (2) e Bis (2,6 dietil-4,8-dimetil-s-indacenil) di cobalto (3) foram sintetizados por estratégia de eliminação de sal, utilizando sais de Fe(II) e Co(II). Os compostossão caracterizados por métodos espectroscópicos e eletroquímicos. As medições magnéticas foram realizadas pelo Sistema de Medição de Propriedades Físicas (PPMS). Os dados espectroscópicos Mossbauerrevelam que em todos os compostos, surpreendentemente, o ferro está em +3 estado de oxidação.Os cálculos do DFT foram realizados para entender a mudança no estado de oxidação de um metal. O estudo DFT confirma a natureza da transferência de elétrons do ligante para o metal. O estudovoltamétrico cíclico dessescompostosmostrauma grande separação (ΔE>800mV) entre dois picos de oxidação confirmando a forteinteração entre os centros metálicos. As medições magnéticas nestescompostos organometálicos revelam que eles apresentam um comportamento ferrimagnético a uma temperatura abaixo de 40 K.

Anti pathogenic studies of new mixed ligand metal chelates

Drug discovery aimed at the methodical extermination of life-threatening bacterial infection, especially considering the emergence of multi-drug resistance of pathogenic bacteria has remained a challenge for medicinal inorganic chemistry. In this article, the mixed ligand complexes of Cu (II), Co (II), and Ni (II) containing heterocyclic ligands were synthesized and characterized by IR, LC-MS, UV, and TG-DTA. Complexes are screened for Anti-microbial activity against human pathogenic bacteria.

Design of experiments assisted the development of inclusion complexes of ramipril using hydrophilic carriers for enhancement of solubility and dissolution rate

Abstract The goal of the present study was to develop inclusion complexes and polymers dispersions of ramipril prepared by physical mixing, kneading, co-evaporation, and solvent evaporation methods to enhance drug solubility and dissolution rate, and thereby to reduce drug dose and side effects using selected hydrophilic carriers such as β-CD, PVP-K25, PEG 4000, and HPMC K100M. The prepared formulations were characterized for solubility and in-vitro drug release studies. The systematic optimization of formulations was performed using I-Optimal experimental design by selecting factors such as type of carriers (X1), drug: carrier ratio (X2), and method of preparation (X3), and response variables including percent yield (Y1), solubility (Y2), Carr's index (Y3) and drug release in 30 min (Y4). Mathematical modeling was carried out using a quadratic polynomial model. The inclusion complex formulation (F27) was selected as an optimized batch by numerical desirability function and graphical optimization with the help of design space. The inclusion complex prepared by the co-evaporation method showed maximum drug solubility and released in pH 6.8 phosphate buffer compared to pure and other formulations. The inclusion complex is a feasible approach to improve the solubility, dissolution rate, bioavailability, and minimization of drugs' gastrointestinal toxicity upon oral administration of ramipril.

Investigation of therapeutic effects in the wound healing of chitosan/pGM-CSF complexes

Abstract Granulocyte macrophage colony-stimulating factor (GM-CSF) has been shown to promote the growth, proliferation, and migration of endothelial and keratinocyte cells. Chitosan has been widely used as a biopolymer in wound-healing studies. The aim of this study was to investigate the in vitro proliferative effects of chitosan/pGM-CSF complexes as well as the therapeutic role of the complexes in an in vivo rat wound model. The effect of complexes on cell proliferation and migration was examined. Wounds were made in Wistar-albino rats, and examined histopathologically. The cell proliferation and migration were increased weight ratio- and time-dependently in HaCaT and NIH-3T3 cell lines. Wound healing was significantly accelerated in rats treated with the complexes. These results showed that the delivery of pGM-CSF using chitosan complexes could play an accelerating role in the cell proliferation, migration, and wound-healing process.

Inclusion complexes of 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin with 2-hydroxypropyl-(-cyclodextrin: solubility and antimicrobial activity

The aim of the present study is to improve the solubility and antimicrobial activity of 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin by formulating its inclusion complexes with 2-hydroxypropyl-ß-cyclodextrin in solution and in solid state. The phase solubility study was used to investigate the interactions between 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin and 2-hydroxypropyl-ß-cyclodextrin and to estimate the molar ratio between them. The structural characterization of binary systems (prepared by physical mixing, kneading and solvent evaporation methods) was analysed using the FTIR-ATM spectroscopy. The antimicrobial activity of 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin and inclusion complexes prepared by solvent evaporation method was tested by the diffusion and dilution methods on various strains of microorganisms. The results of phase solubility studies showed that 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin formed the inclusion complexes with 2-hydroxypropyl-ß-cyclodextrin of AP type. The solubility of 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin was increased 64.05-fold with 50% w/w of 2-hydroxypropyl-ß-cyclodextrin at 37 oC. The inclusion complexes in solid state, prepared by the solvent evaporation method, showed higher solubility in purified water and in phosphate buffer solutions in comparison with 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin alone. The inclusion complexes prepared by solvent evaporation method showed higher activity on Bacillus subtilis and Staphylococcus aureus compared to uncomplexed 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin due to improved aqueous solubility, thus increasing the amount of available 3-(3-(2-chlorophenyl)prop-2-enoyl)-4-hydroxycoumarin that crosses the bacterial membrane.

Effect of circulating immune complex on the efficacy of platelet transfusion / 中国输血杂志

【Objective】 To analyze the efficacy of ABO-matched platelet transfusions and ABO-mismatched platelet transfusions in patients with hematonosis and to explore the effect of circulating immune complexes (CIC) on the efficacy. 【Methods】 A total of 1 510 platelet transfusions involving 757 patients in our hospital from January 2013 to June 2018 were retrospectively analyzed. The patients were divided into ABO-matched group and ABO-mismatched group. The 12-hour percent platelet recovery (PPR) was used to evaluate the effect of platelet transfusion between the groups. TEG was used to evaluate the efficacy of the transfusions, and CIC value was measured before and after platelet transfusion. The effect of A-B/CIC (or AB-O/CIC) on platelet function was tested. 【Results】 1)The results showed that platelet transfusion was effective(PPR>30%) in both ABO-matched group[PPR=(66.5±52.8)%] and ABO-mismatched group[PPR=(47.7%±51.6)%], and there was no increase in the report of hemolytic transfusion reaction of ABO-mismatched group. The efficacy of ABO-matched platelet transfusions was significantly better than that of ABO-mismatched group(P 0.05. 2) In the experiment of simulating platelet transfusion in patients, no difference in MA value of TEG was noticed between ABO-mismatched groups and ABO-matched groups (all P>0.05). 3) There was no difference in CIC value before and after platelet transfusions (P>0.05) in the ABO-matched group, while CIC value decreased significantly in all ABO-mismatched groups (all P < 0.05). 4) The MA values (mm)of AB, A and O blood group platelets mixed with A-B/CIC and AB-O/CIC were 36.1 vs 31.1, 37.8 vs 35.0 and 43.1 vs 45.7, with the MA value (mm) in control group at 49.2 vs 49.5, respectively. 【Conclusion】 Platelet transfusion was effective in both ABO-matched group and ABO-mismatched group, and the efficacy of ABO-matched group was significantly better compared with the ABO-mismatched group. There was no increase in the safety risk of ABO-mismatched platelet transfusion with major mismatches/minor matches. CIC can inhibit the function of platelets and combine more with ABO-matched platelets than with ABO-mismatched platelets, therefore, CCI is an important influencing factor on the efficacy of platelet transfusions.

Application value of bipolar electrogram with steep and negative initial morphology in right ventricular outflow tract origin ventricular premature ablation / 中国医师杂志

Objective:To explore the value of using bipolar electrogram to guide target selection in patients with frequent premature ventricular contractions in the right ventricular outflow tract (RVOT-PVC).Methods:The clinical data of 115 patients with idiopathic and frequent RVOT-PVC from October 2018 to January June 2020 in Guangzhou First People′s Hospital were retrospectively analyzed. The number of PVCs in Holter 24 h before ablation was 19 802.6±4916.7, and the load was (20.3±5.0)%. The Johnson & Johnson Carto 3.0 system was used to guide RVOT-PVC radiofrequency ablation, and the morphological characteristics of the bipolar electrogram in the cavity of the successful ablation target were observed. According to whether the starting part of the bipolar electrogram of the distal ablation catheter showed a steep negative shape recorded by the Carto 3.0 system, the patients were divided into positive group and negative group. The differences in ablation success rate, effective discharge time, total ablation time and other indicators of the two groups were compared.Results:Steep negative wave was recorded in the initial part of the effective target site of 87 patients (75.7%). The ablation success rate of the patients was 95.4%(83/87) based on the excitation mapping and unipolar morphology combined with the above initial part of the bipolar electrogram. Compared with the negative group, the PVC disappeared faster in patients of positive group [(6.9±2.3)s vs (10.2±2.9)s, P<0.05] and the total ablation time was shorter [(187.5±35.7)s vs (267.3±54.1)s, P<0.05]. Ambulatory electrocardiogram (ECG) was rechecked at 3 months. At 3 months, there was 1 case recurrence in the positive group and 1 case recurrence in the negative group, and there was no significant difference in the long-term recurrence rate between the two groups ( P=0.422). Conclusions:On the basis of traditional mapping, the bipolar electrogram combined with the steep negative shape of the initial part can be used as an alternative RVOT-PVC ablation strategy.

Percepción del Confort Térmico en Conjuntos Residenciales y su Incidencia en la Calidad de Vida / Thermal Comfort in Residential Complexes as life Quality Enhancers / Conforto Térmico em Complexos Residenciais como Melhoradores da Qualidade De Vida

Resumen Introducción. En este artículo se presentan los resultados finales de la investigación Análisis del confort térmico de conjuntos habitacionales realizada en la ciudad de Portoviejo, Ecuador. Objetivo. Analizar la percepción del confort térmico de las viviendas del conjunto habitacional Fuentes del Río de la ciudad de Portoviejo y reconocer los elementos que favorecen o no la calidad climática del interior de sus espacios, mediante técnicas de investigación y herramientas tecnológicas, evidenciando el valor de orientar las edificaciones de carácter residencial de acuerdo a las condicionantes climáticas que influyen en ellas. Materiales y Métodos. Se presenta una investigación bibliográfica y de campo, apoyada en el diagnóstico del conjunto arquitectónico en estudio. Resultados. Una vez obtenidas las valoraciones, se procedió mediante estrategias de diseño a idear elementos que mitiguen las incidencias climáticas en el interior de viviendas además de elaborar un listado de parámetros bioclimáticos que aporten en la proyección de futuros conjuntos urbanísticos en el área urbana de la ciudad de Portoviejo. Conclusiones. los elementos analizados permiten reconocer la importancia de emplear parámetros bioclimáticos o principios de arquitectura sustentable y el uso de tecnología constructiva que faciliten la creación de programas habitacionales sustentables, contribuyendo en forma positiva con el medio ambiente y mejorando la habitabilidad de los espacios.

Abstract Introduction. This article presents the final results of the research Analysis of the thermal comfort of residential complexes carried out in the city of Portoviejo, Ecuador. Objective. Analyze the perception of thermal comfort of the housing units of the Fuentes del Río housing complex in the city of Portoviejo and recognize the elements that favor or not the climatic quality of the interior of their spaces, through research techniques and technological tools, demonstrating the value of orienting the buildings of a residential nature according to the climatic conditions that influence them. Materials and methods. A bibliographic and field research is presented, supported by the diagnosis of the architectural complex under study. Results. Once the valuations were obtained, we proceeded by means of design strategies to devise elements that mitigate the climatic incidences inside homes, in addition to preparing a list of bioclimatic parameters that contribute to the projection of future urban complexes in the urban area of the city of Portoviejo. Conclusions. The elements analyzed allow us to recognize the importance of using bioclimatic parameters or principles of sustainable architecture and the use of constructive technology that empower the creation of sustainable housing programs, contributing positively to the environment and improving the habitability of the spaces.

Resumo Introdução. Este artigo apresenta os resultados finais da pesquisa Análise do conforto térmico de complexos residenciais realizada na cidade de Portoviejo, Equador. Objetivo. Analisar a percepção de conforto térmico das unidades habitacionais do conjunto habitacional Fuentes del Río, na cidade de Portoviejo, e reconhecer os elementos que favorecem ou não a qualidade climática do interior de seus espaços, por meio de técnicas de pesquisa e ferramentas tecnológicas, demonstrando o valor da orientação dos edifícios. de natureza residencial de acordo com as condições climáticas que os influenciam. Materiais e métodos. É apresentada uma pesquisa bibliográfica e de campo, apoiada no diagnóstico do complexo arquitetônico em estudo. Resultados. Uma vez obtidas as avaliações, procedemos por meio de estratégias de projeto para conceber elementos que mitigam os incidentes climáticos dentro das casas, além de elaborar uma lista de parâmetros bioclimáticos que contribuem para a projeção de futuros complexos urbanos na área urbana da cidade de Portoviejo. Conclusões. Os elementos analisados permitem reconhecer a importância do uso de parâmetros ou princípios bioclimáticos da arquitetura sustentável e o uso de tecnologia construtiva que possibilite a criação de programas habitacionais sustentáveis, contribuindo positivamente para o meio ambiente e melhorando a habitabilidade dos espaços.

Complexos imínicos de cobre com atividade antiparasitária frente à doença de chagas / Imine copper complexes with antiparasitic activity against Chagas disease

Neste trabalho foram sintetizados e caracterizados três complexos de cobre com ligantes imínicos, com o objetivo de avaliar sua atividade tripanocida. Esses complexos foram caracterizados por diversas técnicas espectroscópicas, como UV-Vis, Infravermelho e EPR, além de análise elementar e espectrometria de massa. Juntamente com outros complexos similares previamente sintetizados pelo nosso grupo, tiveram suas atividades avaliadas frente à forma tripomastigota do parasita T. cruzi, responsável pela fase aguda da doença de Chagas, por ensaios de viabilidade celular, com determinação do valor de seus IC50, concentração em que observamos a morte de 50% da cultura celular, pela metodologia denominada MTT. Todos os complexos mostraram-se eficientes frente a tripomastigotas, apresentando valores de IC50 abaixo de 10 µM, com quatro deles obtendo índice de seletividade maior que 10, fator importante para definir agentes promissores antichagásicos. Complexos selecionados também tiveram sua atividade verificada frente à forma amastigota do parasita, responsável pela fase crônica da doença, utilizando método de imageamento por microscópio de fluorescência e contagem celular. Estudos de inibição da cruzaína, uma cisteíno-protease importante para o metabolismo do parasita foram conduzidos em colaboração com o laboratório do Prof. Wagner Alves de Souza Júdice, da Universidade de Mogi das Cruzes. Quatro dos compostos testados apresentaram atividade inibitória frente a cruzaína, sendo dois de cobre, um de zinco e um ligante livre. Os estudos também permitiram diferenciar os mecanismos de inibição dos compostos, com os complexos de cobre apresentando um mecanismo de inibição clássico e o composto de zinco e o ligante livre apresentando o mecanismo de inibição competitiva parabólica com cooperatividade

In this work, three copper complexes with iminic ligands were synthesized and characterized, with the objective of evaluating their trypanocidal activity. These complexes were characterized by several spectroscopic techniques, such as UV-Vis, Infrared and EPR, in addition to elementary analysis and mass spectrometry. Together with other similar complexes previously synthesized by our group, their activities were evaluated against the trypomastigote form of the parasite T. cruzi, responsible for the acute phase of Chagas disease, by cell viability tests, with determination of the value of their IC50, concentration in that we observed the death of 50% of the cell culture, by the methodology called MTT, all presenting IC50 values below 10 µM, with four of them obtaining a selectivity index greater than 10, important factor for defining promising antichagasic agents. Selected complexes also had their activity verified against the amastigote form of the parasite, responsible for the chronic phase of the disease, using a fluorescence microscope and cell counting imaging method. Inhibition studies of cruzain, a cysteine protease important for the metabolism of the parasite, were conducted in collaboration with the laboratory of Professor Wagner Alves de Souza Júdice at the University of Mogi das Cruzes. Four of the tested compounds showed inhibitory activity against cruzain, two of copper, one of zinc and a free ligand. The studies also allowed to differentiate the mechanisms of inhibition of the compounds, with the copper complexes presenting a classic inhibition mechanism and the zinc compound and the free ligand presenting the competitive parabolic inhibition mechanism with cooperativity

Glomerulonefritis rápidamente progresiva mediada por inmunocomplejos (tipo II). Revisión de la literatura / Immune complex-mediated rapidly progressive glomerulonephritis (type II). Literature review

La glomerulonefritis rápidamente progresiva mediada por complejos inmunes (GMNRP II) es un síndrome clínico caracterizado por el rápido deterioro de la función renal asociado a hematuria, edemas y oliguria. Histológicamente se manifiesta como una glomerulonefritis crescéntica, con la presencia de depósitos granulares en la inmunofluorescencia. Aunque es una enfermedad rara, es grave y puede evolucionar a una enfermedad renal crónica, por lo cual es fundamental su identificación temprana. A continuación, se presenta una revisión sobre este tipo de glomerulonefritis, con énfasis en su etiología y en las opciones terapéuticas existentes en la actualidad

Rapidly progressive immune complex-mediated glomerulonephritis (RPGNMN II) is a clinical syndrome characterized by severe deterioration of renal function associated with hematuria, edema, and oliguria. It is histologically characterized as a crescentic glomerulonephritis, with the presence of granular deposits on immunofluorescence. Although it is a rare condition, it is a potentially serious disease that may progress to chronic renal disease, therefore its early identification is essential. Here we present a review of this form of glomerulonephritis, with emphasis on its etiology and the currently available therapeutic options

Cytotoxic Effects of Diclofenac and Ibuprofen Zinc (II)-Nicotinamide Ternary Complexes in Breast Cancer Cell Lines

Abstract Breast cancer is one of the leading types of cancer worldwide, and the search for new treatment options are crucial. Nonsteroidal anti-inflammatory drugs (NSAIDs) -specially ibuprofen and diclofenac-, have shown antitumoral effect against several types of cancer. The synthesis of organometallic compounds has shown significant improvements in pharmacological properties and efficacy of organic molecules. Two zinc II ternary complexes containing the NSAIDs diclofenac and ibuprofen and nicotinamide neutral linker (Nic) were obtained by the two-step solvent metalligand complexation method. The compounds Zn2(Diclof)4(Nic)2 (complex 1) and Zn2(Ibup)4(Nic)2 (complex 2) were tested in breast cancer cell lines (4T1, MCF-7 and MDA-MB-231) to evaluate their cytotoxicity, comparing to ibuprofen and diclofenac as controls. We found that both complex 1 and 2 exerted more than 60% reduction in 4T1 viability at 250µM, and complex 2 decreased cell viability at 250 µM and 137.5 µM in MCF-7 (34.35% and 26.42% reduction, respectively) and in MDA-MB-231 (57.2% and 22.88% reduction, respectively), all compared to controls. Complex 1 was selective only in MCF-7, and complex 2 was selective in both MCF-7 and MDA-MB-231. In summary, our data showed that the cytotoxic effect of complex 1 and 2 is increased comparing to their original NSAID in different breast cancer cell lines, highlighting their potential anti-tumoral activity.

Innovative approaches to improve serodiagnosis of Strongyloides stercoralis infection

ABSTRACT Strongyloidiasis is a helminthiasis of neglected condition that has no gold standard parasitological diagnosis due to the intermittent release of larvae in feces. This study aimed to use an scFv (single chain variable fragment) obtained by Phage Display, previously validated to detect immune complexes in serum samples from individuals infected with Strongyloides stercoralis by enzyme-linked immunosorbent assay (ELISA). Now the ability of scFv to detect the immune complexes was verified by immunofluorescence, flow cytometry using magnetic beads and surface plasmon resonance (SPR). As ELISA, the SPR, immunofluorescence and flow cytometry demonstrated the ability of scFv to detect immune complexes in sera from individuals with strongyloidiasis and discriminate them from sera of individuals with other parasitic diseases and healthy individuals. Besides de conventional ELISA, the novel approaches can also be promptly applied as auxiliary diagnostic tools to the existing parasitological method for accurate diagnosis of human strongyloidiasis.

Research on inheritance of Professor WANG Jie's Experience in Treatment of Frequent Ventricular Premature Complexes Based on Inheritance Support System of Traditional Chinese Medicine / 中国实验方剂学杂志

Objective:With the aid of the Inheritance Support System of Traditional Chinese Medicine V2.5 （TCMISS V2.5），to study the experience and prescription rules of professor WANG Jie in the treatment of frequent ventricular premature complexes，and inherit his clinical experience in diagnosis and treatment. Method:Professor WANG Jie's medical records and prescriptions for frequent ventricular premature complexes from 2016 to 2020 were collected and sorted out. Improved mutual information method，association rules，complex system entropy clustering，and unsupervised entropy hierarchical clustering were used to analyze the nature and flavor，channel tropism，concerted application rules，pair and combination of herbs for statistics， association rules analysis and discovery of new prescriptions. Result:A total of 122 prescriptions of professor WANG Jie on the treatment of frequent ventricular premature complexes were collected. 110 herbs，mostly with pungent and sweet flavors，were mainly on spleen channel and also on heart，kidney，liver，lung，and stomach channels. Cinnamomi Ramulus，Paeoniae Alba Radix<italic>，</italic>Os Draconis<italic>，</italic>Ostreae Concha<italic>， </italic>Glycyrrhizae Radix<italic>，</italic>and Jujubae Fructus<italic> </italic>had the highest frequency in use. The high-frequency herbal pair was Cinnamomi Ramulus-Paeoniae Alba Radix（116 times， accounting for 95.08%），the commonly used corner drugs were Cinnamomi Ramulus<italic>-</italic>Os Draconis<italic>-</italic>Ostreae Concha<italic> </italic>（108 times，88.52%），Cinnamomi Ramulus<italic>-</italic>Paeoniae Alba Radix<italic>-</italic>Ostreae Concha （106 times， 86.89%），Cinnamomi Ramulus<italic>-</italic>Paeoniae Alba Radix<italic>-</italic>Os Draconis （106 times，86.89%）. Commonly used herbal pair was<italic> </italic>Aucklandiae Radix-Amomi Villosi Fructus. The core prescription herbs included Cinnamomi Ramulus<italic>-</italic>Paeoniae Alba Radix<italic>-</italic>Os Draconis<italic>-</italic>Ostreae Concha<italic>-</italic>Glycyrrhizae Radix<italic>-</italic>Jujubae Fructus<italic>-</italic>Zingiberis Recens Rhizoma<italic>-</italic>Achyranthis Bidentatae Radix<italic>-</italic>Codonopsis Radix<italic>-</italic>Astragali Seu Hedysari Radix<italic>-</italic>Cistanches Herba-Poria<italic>-</italic>Ziziphi Spinosae Semen. Conclusion:Professor WANG Jie's prescription for the treatment of frequent ventricular premature complexes is Guizhi Jia Longgu Mulitang，and the main herbs are Cinnamomi Ramulus，Paeoniae Alba Radix，Os Draconis，Ostreae Concha，Glycyrrhizae Radix，and Jujubae Fructus. The final prescription could be adjusted according to the diseases and symptoms of patients.