Differences in Muscle Strength Performance According to the Genotypes of the rs4646994 Polymorphism of the ACE Gene in a Sedentary Population

SUMMARY: The angiotensin converting enzyme gene (ACE) has been associated with endurance and strength performance through its I/D polymorphism. Nevertheless, contradictory results exist between different populations. In this context, the purpose of this research was to determine the influence of the I/D polymorphism of the ACE gene on muscle strength in a sedentary Chilean sample. In this study 102 healthy male students (21.3 ± 2.2 years) completed the assessment. I/D genotyping, cardiovascular, anthropometric, grip strength and knee extensor peak strength were evaluated. The ACE polymorphism frequency was: II, 33.3 %; ID, 46.1 %; DD, 20.6 %. The results showed significant differences and large effect size in maximum (p = 0.004; d = 0.85) and relative handgrip strength (p = 0.004; d = 0.9) between genotype II vs DD. No difference was found for maximal or relative knee extensor strength between groups (p = 0.74), showing a low effect size (d = 0.20). In conclusion, this study provides insights into the role of the ACE gene in muscle strength and highlights the importance of investigating genetic variants in sedentary populations to better understand strength performance.

El gen de la enzima convertidora de angiotensina (ACE) se ha asociado con el rendimiento de resistencia y fuerza a través de su polimorfismo I/D. Sin embargo, existen resultados contradictorios entre diferentes poblaciones. En este contexto, el propósito de esta investigación fue determinar la influencia del polimorfismo I/D del gen ACE sobre la fuerza muscular en una muestra chilena sedentaria. En este estudio, fueron evaluados 102 estudiantes varones sanos (21,3 ± 2,2 años). Se realizaron aplicaron las siguientes evaluaciones: genotipado del polimorfismo I/D, cardiovascular, antropométrica, fuerza de prensión y fuerza máxima de extensión de rodilla. La frecuencia del polimorfismo I/D de ACE fue: II, 33,3 %; DNI, 46,1 %; DD, 20,6 %. Los resultados mostraron diferencias significativas y un gran tamaño del efecto en la fuerza máxima (p = 0,004; d = 0,85) y relativa de prensión manual (p = 0,004; d = 0,9) entre el genotipo II y el DD. No se encontraron diferencias en la fuerza máxima o relativa de los extensores de rodilla entre los grupos (p = 0,74), lo que muestra un tamaño de efecto bajo (d = 0,20). En conclusión, este estudio proporciona información sobre el papel del gen ACE en la fuerza muscular y destaca la importancia de investigar variantes genéticas en poblaciones sedentarias para comprender mejor el rendimiento de la fuerza.

Hipertensión arterial sistémica posterior a COVID-19 / Systemic arterial hypertension after COVID-19

Introducción: un nuevo tipo de coronavirus que se nombró SARSCoV-2, responsable de la enfermedad por COVID-19, tuvo esparcimiento rápido en el mundo, por alta transmisión que resultó en pandemia. Se registraron 2'397,216 casos confirmados, con 162,956 defunciones en el mundo, de acuerdo con la Organización Mundial de la Salud (OMS), en abril de 2020. Sin embargo, la hipertensión afecta a 40% de adultos, lo que significa que alrededor de 250 millones de personas padecen de presión alta. La OMS, de acuerdo con sus reportes, refiere que la hipertensión es el factor de riesgo número uno de muerte. Uno de cada cuatro mexicanos padece hipertensión arterial. Objetivos: establecer la incidencia de la hipertensión arterial sistémica posterior a padecer COVID-19 en pacientes de la Unidad de Medicina Familiar (UMF) No. 48. Material y métodos: es un estudio transversal, observacional y descriptivo, conformado por 3,238 pacientes con diagnóstico de COVID-19 positivo, de ambos sexos, con edades entre 18 y 70 años. Por medio de la fórmula para poblaciones infinitas se obtiene una muestra de 348 pacientes. Se realizó revisión de expedientes en el Sistema de Información de Medicina Familiar, versión 6.2, para obtención de la información correspondiente. Resultados: 27 pacientes diagnosticados con hipertensión arterial posterior al diagnóstico de COVID-19, 52% del sexo masculino y 48% del femenino, con media de edad de 39 años, 74% correspondió a enfermedad leve por COVID-19 y 26% a enfermedad moderada. Se documenta mediana de ocho días por periodo de infección por COVID-19. En el círculo femenino el promedio de la aparición de hipertensión arterial fue de 13 meses y en el masculino la media de desarrollo de hipertensión arterial posterior a COVID-19 fue de seis meses (AU)

Introduction: a new type of coronavirus that was named SARSCoV-2, responsible for the COVID-19 disease, with rapid spread in the world, due to high transmission that resulted in pandemic. There were 2'397,216 confirmed cases, with 162,956 deaths in the world, according to the WHO in April 2020. However, hypertension affects 40% of adults and means that around 250 million people suffer from high blood pressure. The WHO, according to its reports, refers that hypertension is the number one risk factor for death. One in four Mexicans suffers from high blood pressure. Objectives: to establish the incidence of systemic arterial hypertension after suffering from COVID-19 in patients of the UMF No. 48. Material and methods: it is a cross-sectional, observational and descriptive study, consisting of 3,238 patients with a positive COVID-19 diagnosis of both sexes, aged 18-70 years. Through the formula for infinite populations a sample of 348 patients is obtained. Will proceed with review of files in the Family Medicine Information System, version 6.2, to obtain the corresponding information. Results: 27 patients diagnosed with hypertension after the diagnosis of COVID-19, 52% of the male sex and 48% of the female sex, with a mean age of 39 years; 74% corresponds to a mild illness by COVID-19 and 26% to moderate disease. A median of 8 days per period of infection by COVID-19 is documented. In the female circle, the average onset of hypertension was 13 months and as for the male sex, the mean development of hypertension after COVID-19 was six months (AU)

Tratamiento de reemplazo enzimático en pacientes cubanos con enfermedad de Gaucher: experiencia de 15 años / Enzyme replacement treatment in Cuban patients with Gaucher disease: 15 years of experience

Introducción: La enfermedad de Gaucher es una entidad de acúmulo lisosomal, con un patrón de herencia autosómico recesivo, debido a la deficiencia de le enzima betaglucocerebrosidasa ácida. El gen está mapeado en el cromosoma 1q21 y se han descrito más de 500 mutaciones. Se caracteriza por presentar anemia, trombocitopenia, hepatoesplenomegalia, manifestaciones esqueléticas y, en ocasiones, compromiso neurológico. Entre los tratamientos se utiliza el reemplazo enzimático con imiglucerasa. Objetivo: Evaluar los resultados de la aplicación de imiglucerasa (Cerezyme®) en pacientes con enfermedad de Gaucher. Métodos: Se realiza un estudio longitudinal, descriptivo para evaluar el comportamiento de las variables clínicas, hematológicas y ultrasonográficas de ocho pacientes cubanos con enfermedad de Gaucher tras recibir el tratamiento sustitutivo enzimático. Se evaluaron al año, cinco y de diez a quince años de tratamiento. Resultados: Al inicio, todos los pacientes presentaron anemia y la mayoría tuvieron trombocitopenia y hepatoesplenomegalia al diagnóstico de la enfermedad. Los pacientes con manifestaciones neurológicas y la mutación L444P en estado homocigótico se clasificaron en EG tipo 3, el resto en tipo1. En todos los pacientes se constató aumento de las cifras de hemoglobina, la elevación del número de plaquetas y reducción de la hepatoesplenomegalia posterior al año de tratamiento. Los pacientes con tipo 3 mantuvieron la afectación neurológica. No se reportaron reacciones adversas al medicamento. Conclusiones: La terapia de reemplazo enzimática con imiglucerasa (Cerezyme®) es un pilar fundamental en el tratamiento de los pacientes con esta enfermedad, lo cual influye de forma positiva en la calidad de vida, obteniéndose mejores resultados con su comienzo en edad pediátrica.

Introduction: Gaucher disease is an entity of lysosomal accumulation, with an autosomal recessive inheritance pattern, due to the deficiency of the acid betaglucocerebrosidase enzyme. The gene is mapped on chromosome 1q21 and more than 500 mutations have been described. It is characterized by anemia, thrombocytopenia, hepatosplenomegaly, skeletal manifestations and sometimes neurological involvement. Among the treatments, enzyme replacement with imiglucerase is used. Objective: To evaluate the results of the application of imiglucerase in patients with Gaucher disease. Methods: A longitudinal, descriptive study to evaluate the behavior of the clinical, hematological and ultrasonographic variables of eight Cuban patients with Gaucher disease after receiving enzyme replacement treatment was carried out. They were evaluated after one, five and ten to fifteen years of treatment. Results: At debut, all patients presented anemia, and the majority showed thrombocytopenia and hepatosplenomegaly at diagnosis of the disease. Patients with neurological manifestations and the L444P mutation in a homozygous state were classified as type 3 GD, the rest as type 1. In all patients, an increase in hemoglobin levels, an increase in the number of platelets and a reduction in hepatosplenomegaly was observed after one year of treatment. Patients with type 3 maintain neurological involvement. No adverse reactions to the medication were reported. Conclusions: Enzyme replacement therapy with imiglucerase (Cerezyme®) is a fundamental pillar in the treatment of patients with this disease, which positively influences quality of life, obtaining better results with its onset in pediatric age.

Actividades enzimáticas séricas de la ceruplasmina y la mieloperoxidasa en diabéticos tipo 2

Introducción: La diabetes mellitus tipo 2 se caracteriza por la hiperglucemia debido a la insuficiente producción de insulina de las células β. La mieloperoxidasa promueve el estrés oxidativo durante la inflamación y la ceruloplasmina se considera su inhibidor endógeno. Objetivo: Evaluar la relación entre la ceruloplasmina y la mieloperoxidasa, determinadas simultáneamente en el suero de pacientes diabéticos tipo 2. Métodos: Se estudiaron 362 pacientes diabéticos tipo 2 y 110 sujetos sanos. La actividad sérica de la ceruloplasmina se determinó por el método de Siotto; y el de la mieloperoxidasa, por el de Kraeisz. Resultados: El 72 % de los pacientes diabéticos tenían hiperglucemia y el 77 % presentaba obesidad abdominal. Las actividades de ambas enzimas se incrementaron significativamente en relación con el grupo control. El coeficiente de correlación de la actividad enzimática resultó bajo. El cociente RMPO/CP de los pacientes diabéticos superó el de los controles. La ceruloplasmina no inhibió la mieloperoxidasa. Conclusiones: Predominó la mieloperoxidasa, por tanto, no se manifestó el efecto inhibitorio de la ceruloplasmina. La elevada actividad de la mieloperoxidasa se asocia con un agravamiento del cuadro clínico del paciente diabético.

Introduction: Type 2 diabetes mellitus is characterized by hyperglycemia due to insufficient insulin production by β cells. Myeloperoxidase promotes oxidative stress during inflammation and ceruloplasmin is considered its endogenous inhibitor. Objective: To evaluate the relationship between ceruloplasmin and myeloperoxidase, determined simultaneously in the serum of type 2 diabetic patients. Methods: A total of 362 type 2 diabetic patients and 110 healthy subjects were studied. Serum ceruloplasmin activity was determined by the Siotto KM method and myeloperoxidase by the Kraeisz JE method. Results: 72% of diabetic patients had hyperglycemia and 77% had abdominal obesity. The activities of both enzymes were significantly increased relative to the control group. The correlation coefficient of enzyme activity was low. The ORMO/CP ratio of diabetic patients exceeded that of controls. Ceruloplasmin did not inhibit myeloperoxidase. Conclusions: Myeloperoxidase predominated, therefore, the inhibitory effect of ceruloplasmin was not manifested. The high activity of myeloperoxidase was associated with a worsening of the clinical picture of the diabetic patient.

Development and verification of an ELISA method for detection of process-specific residual host protein in biological preparation / 中国生物制品学杂志

@#Objective To develop and verify a double-antibody sandwich ELISA method for the detection of process-specific E.coli residual protein in recombinant biological preparations.Methods Taking the production and purification process of glucagon-like peptide(GLP)expressed by E.coli as the specific process model,the same process was used to intercept the residual protein of empty E.coli(normal E.coli that does not express recombinant protein). One female New Zealand white rabbit and six female Kunming mice were immunized with the residual protein as the immunogen. Using the IgG antibody purified from rabbit immune serum as the coating antibody,mouse immune serum as the second sandwich antibody,and antimouse IgG-HRP as the enzyme-labeled secondary antibody,a double antibody sandwich ELISA method for process-specific residual protein of E.coli was established. The specificity,accuracy and precision of the method were verified,and the limit of detection(LOD)was determined. Simultaneously,the developed method and the commercial E.coli host protein residue detection kit were used to quantitatively determine the residual protein of purified GLP preparation.Results After a series of gradient dilution of process-specific residual protein with known concentration,the sensitivity of this ELISA method reached 338 pg/mL. No cross reaction occurred in the detection of CHO and yeast cell lysis protein by this method,the recoveries of samples with low,medium and high concentrations were all in the range of 80% — 120%,and the intra-assay and inter-assay CVs of the empty E.coli interception standard with low,medium and high concentrations were all less than15%. For the residual protein in GLP preparation,about 62% of the residual proteins were not detected by the commercial non-process-specific ELISA kit compared with the total amount of residual proteins detected by the developed method,and these residual proteins should be the process-specific residual proteins.Conclusion The double antibody sandwich ELISA method developed in this study has high sensitivity,strong specificity,good accuracy and precision for the detection of process-specific E.coli residual protein,which can meet the detection requirements that the residual protein is less than0. 01% — 0. 1% in biological preparations.

Modified Liuwei Dihuangtang Combined with Losartan Potassium Regulates ACE1/AngⅡ/AT1R Axis and Intestinal Flora in Rat Model of Diabetic Kidney Disease / 中国实验方剂学杂志

ObjectiveTo explore the mechanism of modified Liuwei Dihuangtang in preventing and treating renal injury in diabetic kidney disease （DKD） via the angiotensin-converting enzyme 1 （ACE1）/angiotensin Ⅱ （AngⅡ）/angiotensin Ⅱ type 1 receptor （AT1R） axis. MethodFifty male SD rats were randomized into a normal group （n=8） and a modeling group （n=42）. The rats in the modeling group were fed with a high-sugar and high-fat diet for 6 weeks and intraperitoneally injected with 35 mg·kg-1 streptozotocin （STZ） to establish the model of DKD. After successful modeling， the rats were randomized into model， traditional Chinese medicine （modified Liuwei Dihuangtang granules 21 g·kg-1）， western medicine （losartan potassium， 33 mg·kg-1）， and integrated Chinese and western medicine （losartan potassium 33 mg·kg-1 combined with modified Liuwei Dihuangtang granules 21 g·kg-1） groups. The levels of fasting blood glucose （FBG）， urinary protein （Up）， blood urea nitrogen （Bun）， and serum creatinine （SCr） were measured in each group after 8 consecutive weeks of drug intervention. Enzyme-linked immunosorbent assay was employed to determine the serum levels of ACE1， AngⅡ， and AT1R. Western blot was employed to measure the protein levels of ACE1， AngⅡ， and AT1R in the renal tissue. The pathological and morphological changes of the renal tissue were observed after hematoxylin-eosin （HE） staining， Masson staining， and periodic acid Schiff 's （PAS） staining. The fecal samples of rats in each group were collected for 16S rDNA high-throughput sequencing. ResultCompared with the normal group， the model group showed elevated levels of Up， FBG， Bun， SCr， ACE1， AngⅡ， and AT1R （P<0.01）， serious lesions in the renal tissue， up-regulated protein levels of ACE1， AngⅡ， and AT1R （P<0.01）， increased Firmicutes/Bacteroidetes （F/B） ratio， decreased relative abundance of Lactobacillus， and increased relative abundance of Moralella and Bifidobacteria. Compared with the model group， drug intervention lowered the levels of Bun， SCr， ACE1， AngⅡ， and AT1R （P<0.01） and alleviated the pathological changes in the renal tissue. Chinese medicine and integrated Chinese and western medicine lowered the levels of Up and FBG （P<0.01）， and western medicine and integrated Chinese and western medicine down-regulated the protein levels of ACE1， AngⅡ， and AT1R. In addition， Chinese medicine down-regulated the protein levels of AngⅡ （P<0.01） as well as ACE1 and AT1R （P<0.05）. Chinese medicine and integrated Chinese and western medicine decreased the F/B ratio， and western medicine and Chinese medicine increased the relative abundance of Blautia. Chinese medicine and integrated Chinese and western medicine increased the relative abundance of Lactobacillus， Ruminococcus undetermined genera， and Bifidobacteria， decreased the relative abundance of Moralella， and increased the Chao 1 and Ace indexes （P<0.05）. Compared with the western medicine group， the integrated Chinese and western medicine group showed lowered levels of Up （P<0.01）， Bun （P<0.05）， and ACE1 and AT1R （P<0.01）， down-regulated protein levels of ACE1， AngⅡ， and AT1R （P<0.05）， alleviated pathological changes in the renal tissue， increased relative abundance of Bifidobacteria， and increased Chao 1 and Ace indexes （P<0.05）. ConclusionModified Liuwei Dihuangtang combined with losartan potassium can mitigate renal fibrosis by regulating the ACE1/AngⅡ/AT1R axis， increasing the relative abundance of Lactobacillus and Bifidobacterium， reducing the relative abundance of Moralella， improving the richness and evenness of intestinal flora， and alleviating pathological damage in the renal tissue.

Analysis on risk factors of clopidogrel resistance in patients with ischemic stroke / 药学实践杂志

Objective To investigate the risk factors of drug resistance in patients with ischemic stroke by clopidogrel therapy and provide references for promoting clinical individualized drug therapy. Methods A total of 202 inpatients diagnosed with ischemic stroke were admitted and given dual anti-treatment (aspirin+clopidogrel). CYP2C19 genotype was detected by microarray hybridization during hospitalization, and CYP2C19 gene polymorphisms were classified into fast metabolism group, medium metabolism group and slow metabolism group according to the type of drug metabolism. Patients were tested for platelet inhibition induced by adenosine diphosphate (ADP) according to thromboelastographic (TEG) on 7~14 d of drug administration. ADP <30% was classified as clopidogrel drug resistance group and ADP ≥30% as non-resistance group. Logistic regression analysis was used to study the risk factors for the development of clopidogrel resistance. Results Among 202 patients with ischemic stroke, 87 were in the resistant group and 115 in the non-resistant group. The proportion of patients with clopidogrel resistance combined with diabetes and the level of white blood cell count were higher than that in the non-resistant group, and the differences were statistically significant (P<0.05).The proportion of patients with clopidogrel resistance in the CYP2C19 intermediate metabolism group was significantly higher than that in the fast metabolism group, and the rate of platelet inhibition was also significantly lower than that in the fast metabolism group, all with statistically significant differences (P<0.05). Conclusion Combined diabetes mellitus, high white blood cell count levels and CYP2C19 mid-metabolic phenotype are independent risk factors for the development of clopidogrel resistance in patients with ischemic stroke.

Enzyme-linked Immunosorbent Assay in Quality Control of Chinese Medicines： A Review / 中国实验方剂学杂志

In the quality control of Chinese medicine， the detection of active components and toxic and harmful components are two important links. Although conventional methods such as high performance liquid chromatography and liquid chromatography-mass spectrometry can accurately quantify the above substances， they have shortcomings such as complicated operation， high costs， inability of detection at any time， difficult detection of insoluble and macromolecular substances. Enzyme-linked immunosorbent assay （ELISA） can adsorb antigens or antibodies on the surface of solid carriers and realize qualitative or quantitative analysis of targets by using the specific reactions of antigens and antibodies. This method is praised for the simple operation， high sensitivity， strong specificity， simple requirements for experimental equipment， a wide application range， and low costs. In recent years， ELISA has been widely used in the quality control of Chinese medicine， especially in the content determination of mycotoxins represented by aflatoxin and the qualitative and quantitative analysis of active components. ELISA plays an increasingly important role with its unique advantages， providing new methods and ideas for the rapid quality examination of large quantities of Chinese medicines. This paper reviews the research progress in ELISA for the quality control of Chinese medicine in recent years and prospects its technical development and application prospects， aiming to provide reference and research ideas for further using this method to ensure the quality， safety， and controllability of Chinese medicine.

Biological principles for "homotherapy for heteropathy" / 药学学报

Non-infectious chronic diseases in human including diabetes, non-alcoholic fatty liver disease (NAFLD), atherosclerosis (AS), neurodegenerative diseases, osteoporosis, as well as malignant tumors may have some common pathogenic mechanisms such as non-resolved inflammation (NRI), gut microbiota dysfunction, endoplasmic reticulum stress, mitochondria dysfunction, and abnormality of the mammalian target of rapamycin (mTOR) pathway. These pathogenic mechanisms could be the basis for "homotherapy for heteropathy" in clinic. Some commonly used clinical drugs, such as metformin, berberine, aspirin, statins, and rapamycin may execute therapeutic effect on their targeted diseases,and also have the effect of "homotherapy for heteropathy". The mechanisms of the above drugs may include anti-inflammation, modulation of gut microbiota, suppression of endoplasmic reticulum stress, improvement of mitochondria function, and inhibition of mTOR. For virus infectious diseases, as some viruses need certain commonly used replicases, the inhibitors of the replicases become examples of "homotherapy for heteropathy" for antiviral therapy in clinic (for example tenofovir for both AIDS and HBV infection). Especially, in case of outbreak of new emerging viruses, these viral enzyme inhibitors such as azvudine and sofibuvir, could be rapidly used in controlling viral epidemic or pandemic, based on the principle of "homotherapy for heteropathy". In this review article, we show the research progress of the biological basis for "homotherapy for heteropathy" and the possible mechanisms of some well-known drugs, in order to provide insights and new references for innovative drug R&D.

Clinical value of genetic polymorphism analysis of hypertension drugs for individualized treatment of hypertension patients in the southern Anhui region / 中国临床药理学与治疗学

AIM: To analyze the distribution frequency of gene polymorphisms of β receptor blockers, angiotensin receptor antagonists, angiotensin converting enzyme inhibitors, calcium antagonists, and diuretics in hypertensive patients from southern Anhui province, and provide a theoretical basis for gene detection of hypertension drugs and personalized medication. METHODS: Drug gene testing information from 839 hospitalized patients with hypertension at Yijishan Hospital of Wannan Medical College from July 2021 to April 2023 were collected, and the distribution frequency of each gene locus were analyzed. RESULTS: The genotype frequencies of ACE (I/D) I/I, I/D, and D/D were 42.1%, 46.0%, and 11.9%, respectively. the genotype frequencies of ADRB1 (1165G>C) G/G, G/C, and C/C were 8.3%, 40.0%, and 51.6%, respectively. The genotype frequencies of AGTR1 (1166A>C) A/A, A/C, and C/C were 90.2%, 9.8%, and 0.0%. The genotype frequencies of CYP2C9*3 (1075A>C) *1/*1, *1/*3, and *3/*3 were 91.3%, 8.7%, and 0.0%, respectively; the genotype frequencies of CYP2D6* 10 (100C > T) *1/*1, *1/*10, and *10/*10 were 25.0%, 36.6%, and 38.4%, respectively. The genotype frequencies of CYP3A5*3 (6986A>G) *1/*1, *1/*3, and *3/*3 were 7.0%, 39.0%, and 54.0%, respectively. The frequencies of NPPA (2238T>C) T/T, T / C, and C / C genotypes were 97.9%, 2.1%, and 0.0%, respectively. In addition, there was a significant difference in the genotype distribution frequency of multiple drug related gene loci in southern Anhui compared to other regions in China (P< 0.05). CONCLUSION: The genotype distribution frequency of hypertensive drug related gene loci had certain bias in southern Anhui, and were significant different from other regions in China, indicating that conducting genetic polymorphism testing of hypertensive drugs had certain guiding significance for the individualized application of hypertensive drugs in southern Anhui.

Establishment and validation of a universal test method in vitro for SARS-CoV-2 mRNA vaccine potency / 中国生物制品学杂志

@#Objective To establish and verify a universal and stable potency test method in vitro for SARS-CoV-2 mRNA vaccine,so as to use it for the quality control of SARS-CoV-2 mRNA vaccine.Methods ELISA kits that could bind well to S protein of SARS-CoV-2 variants,as well as transfected cells,cell plating concentrations and doses for transfection were screened,and then a potency test method for SARS-CoV-2 mRNA vaccine in vitro was established and verified.Results An ELISA kit was found with good binding ability to S protein of each variant,and HEK293T cells were determined as the transfection cells,with the plating concentration of 2.5 × 10~5 cells/mL and the transfection dose of 4 μg/well in the 6-well plate.An universal and stable potency test method for SARS-CoV-2 mRNA vaccine in vitro was established.The verification results showed that the method met the quality control needs.Conclusion The established potency test method in vitro for SARS-CoV-2 mRNA vaccine has good relative accuracy,linearity,intermediate precision and range,and can be applied to the quality control of SARS-CoV-2 mRNA vaccines.

Metal-organic Framework Immobilized Enzyme and Its Application in Screening of Enzyme Inhibitors of Traditional Chinese Medicine：A Review / 中国实验方剂学杂志

Enzymes are widely used in chemical and pharmaceutical industries because of their advantages of high efficiency and specificity. However， the shortcomings of the free enzymes， such as poor stability and difficulty in recycling， limit their application. Therefore， the immobilization and application of enzymes have become one of the research hotspots. The selection of the immobilization carriers is a critical step in the process of enzyme immobilization. Metal-organic frameworks（MOFs）， a kind of porous materials， are formed by the coordination of metal ions or metal clusters with organic ligands. As an emerging immobilization carrier， its advantages such as high porosity， strong stability， and surface modifiability make it ideal for immobilized enzyme carriers. By immobilizing the free enzyme on MOFs， the above mentioned deficiencies of the free enzymes can be effectively solved， which greatly broaden the applicable condition. Ligand fishing is a method to find receptor-specific ligands from complex components， which has the advantages of high efficiency， simple sample pretreatment and high specificity. The MOF-enzyme complex formed by enzyme immobilization can act as a "fishing rod" for ligand fishing， which can screen out the targets from the complex system of components. The complex chemical composition and various active ingredients of traditional Chinese medicine（TCM） make the ligand fishing technology to play a big role in the screening of enzyme inhibitors from TCM. And the screened enzyme inhibitors are expected to be further developed into the lead compounds with good efficacy and low adverse effects， so the immobilized enzymes of MOFs have a wide application in the screening of active ingredients from TCM. Based on this， this paper summarized the methods of immobilized enzymes of MOFs in recent years， analyzed the characteristics， advantages and disadvantages of each method， and summarized the laws of preparation conditions and mechanisms. Meanwhile， the application and future development of immobilized enzymes of MOFs in the field of enzyme inhibitor screening from TCM were also summarized and prospected， with a view to providing a reference for the development of natural ingredients and the modernization of TCM.

GLUL stabilizes N-Cadherin by antagonizing β-Catenin to inhibit the progresses of gastric cancer

Glutamate-ammonia ligase (GLUL, also known as glutamine synthetase) is a crucial enzyme that catalyzes ammonium and glutamate into glutamine in the ATP-dependent condensation. Although GLUL plays a critical role in multiple cancers, the expression and function of GLUL in gastric cancer remain unclear. In the present study, we have found that the expression level of GLUL was significantly lower in gastric cancer tissues compared with adjacent normal tissues, and correlated with N stage and TNM stage, and low GLUL expression predicted poor survival for gastric cancer patients. Knockdown of GLUL promoted the growth, migration, invasion and metastasis of gastric cancer cells in vitro and in vivo, and vice versa, which was independent of its enzyme activity. Mechanistically, GLUL competed with β-Catenin to bind to N-Cadherin, increased the stability of N-Cadherin and decreased the stability of β-Catenin by alerting their ubiquitination. Furthermore, there were lower N-Cadherin and higher β-Catenin expression levels in gastric cancer tissues compared with adjacent normal tissues. GLUL protein expression was correlated with that of N-Cadherin, and could be the independent prognostic factor in gastric cancer. Our findings reveal that GLUL stabilizes N-Cadherin by antagonizing β-Catenin to inhibit the progress of gastric cancer.

Logic-gated tumor-microenvironment nanoamplifier enables targeted delivery of CRISPR/Cas9 for multimodal cancer therapy

Recent innovations in nanomaterials inspire abundant novel tumor-targeting CRISPR-based gene therapies. However, the therapeutic efficiency of traditional targeted nanotherapeutic strategies is limited by that the biomarkers vary in a spatiotemporal-dependent manner with tumor progression. Here, we propose a self-amplifying logic-gated gene editing strategy for gene/H2O2-mediated/starvation multimodal cancer therapy. In this approach, a hypoxia-degradable covalent-organic framework (COF) is synthesized to coat a-ZIF-8 in which glucose oxidase (GOx) and CRISPR system are packaged. To intensify intracellular redox dyshomeostasis, DNAzymes which can cleave catalase mRNA are loaded as well. When the nanosystem gets into the tumor, the weakly acidic and hypoxic microenvironment degrades the ZIF-8@COF to activate GOx, which amplifies intracellular H+ and hypoxia, accelerating the nanocarrier degradation to guarantee available CRISPR plasmid and GOx release in target cells. These tandem reactions deplete glucose and oxygen, leading to logic-gated-triggered gene editing as well as synergistic gene/H2O2-mediated/starvation therapy. Overall, this approach highlights the biocomputing-based CRISPR delivery and underscores the great potential of precise cancer therapy.

Self-sufficient nanoparticles with dual-enzyme activity trigger radical storms and activate cascade-amplified antitumor immunologic responses

Radiotherapy (RT) can potentially induce systemic immune responses by initiating immunogenic cell death (ICD) of tumor cells. However, RT-induced antitumor immunologic responses are sporadic and insufficient against cancer metastases. Herein, we construct multifunctional self-sufficient nanoparticles (MARS) with dual-enzyme activity (GOx and peroxidase-like) to trigger radical storms and activate the cascade-amplified systemic immune responses to suppress both local tumors and metastatic relapse. In addition to limiting the Warburg effect to actualize starvation therapy, MARS catalyzes glucose to produce hydrogen peroxide (H2O2), which is then used in the Cu+-mediated Fenton-like reaction and RT sensitization. RT and chemodynamic therapy produce reactive oxygen species in the form of radical storms, which have a robust ICD impact on mobilizing the immune system. Thus, when MARS is combined with RT, potent systemic antitumor immunity can be generated by activating antigen-presenting cells, promoting dendritic cells maturation, increasing the infiltration of cytotoxic T lymphocytes, and reprogramming the immunosuppressive tumor microenvironment. Furthermore, the synergistic therapy of RT and MARS effectively suppresses local tumor growth, increases mouse longevity, and results in a 90% reduction in lung metastasis and postoperative recurrence. Overall, we provide a viable approach to treating cancer by inducing radical storms and activating cascade-amplified systemic immunity.

Morpho-physiological and phytohormonal changes during the induction of adventitious root development stimulated by exogenous IBA application in Magnolia biondii Pamp / Alterações morfofisiológicas e fito-hormonais durante a indução do desenvolvimento radicular adventício estimulado pela aplicação exógena do AIB em Magnolia biondii Pamp

Magnolia biondii Pamp is an important ornamental tree species widely grown and used as a rootstock in the propagation of different Magnolia varieties. In the current studies, anatomical, physiological and endogenous hormones were studied to check the effect of IBA 750 mg/L on the adventitious rooting and to provide theoretical and technical support for the propagation of Magnolia biondii Pamp through stem cuttings. Two thousand stem cuttings were prepared and divided into two groups i.e., IBA treated cuttings and water control. For the evaluation of antioxidant enzyme activities, and endogenous hormones levels, samples were collected on the day of planting and each 5th day and further steps were carried out in the laboratory according to the protocols and proper precautions. For the anatomical observations, samples were collected on the 13th, 15th, and 17th day for IBA treated cuttings while 21st, 23rd, and 25th day for control. Collected samples were preserved in the FAA solution and further observations were carried out in the laboratory. Anatomical observations showed that it took 13 days for the differentiation of root primordia to the appearance of young adventitious roots in IBA treated cuttings, while it took 21 days to develop primordia in the control. Antioxidant enzyme activities involved in ROS were significantly higher in the IBA treated cuttings compared to control. POD showed a peak on the 13th day before the emergence of roots in IBA treated cuttings while it showed a peak on the 21st day in the control. PPO showed a peak on the 21st day in the IBA treated cuttings while it showed a peak on the 29th day in the control. SOD showed a peak on the 17th day in IBA treated cuttings, while it showed a peak on the 25th day in the control. Exogenous application of IBA enhanced the endogenous IAA and GA3 levels compared to CK, while it reduced the levels of ABA continuously at the time of rooting and then increased gradually. Inclusively, our study suggests that IBA 750 mg/L is efficient for the rooting of Magnolia biondii Pamp cuttings, as it enhanced the process of antioxidant enzyme activities, endogenous hormones levels and reduced the time of root formation which is evident from the anatomical observations.

Magnolia biondii Pamp é uma importante espécie de árvore ornamental muito cultivada e utilizada como porta-enxerto na propagação de diferentes variedades de Magnolia. Nos estudos atuais, hormônios anatômicos, fisiológicos e endógenos foram estudados para verificar o efeito do AIB na dose de 750 mg / L no enraizamento adventício e fornecer suporte teórico e técnico para a propagação de M. biondii Pamp por meio de estacas. Duas mil estacas foram preparadas e divididas em dois grupos, ou seja, tratadas com AIB e controle de água. Para a avaliação das atividades das enzimas antioxidantes e dos níveis de hormônios endógenos, as amostras foram coletadas no dia do plantio e a cada 5 dias, enquanto as demais etapas foram realizadas em laboratório de acordo com os protocolos e os devidos cuidados. Para as observações anatômicas, as amostras foram coletadas no 13º, 15º e 17º dias para estacas tratadas com AIB e no 21º, 23º e 25º dias para o controle. As amostras coletadas foram preservadas em solução FAA, e outras observações foram realizadas em laboratório. Observações anatômicas mostraram a necessidade de 13 dias para a diferenciação dos primórdios radiculares até o aparecimento de raízes adventícias jovens em estacas tratadas com AIB e de 21 dias para o desenvolvimento dos primórdios no controle. As atividades das enzimas antioxidantes envolvidas nas ROS foram significativamente maiores nas estacas tratadas com AIB em comparação com o controle. A POD apresentou pico no 13º dia antes da emergência das raízes nas estacas tratadas com AIB, enquanto no 21º dia apresentou pico no controle. A PPO teve pico no 21º dia nas estacas tratadas com AIB e no 29º dia no controle. A SOD apresentou pico no 17º dia nas estacas tratadas com AIB e no 25º dia no controle. A aplicação exógena de AIB aumentou os níveis endógenos de IAA e GA3 em relação ao controle, enquanto reduziu os níveis de ABA continuamente no momento do enraizamento e, em seguida, aumentou gradativamente. Inclusive, nosso estudo sugere que o AIB na dose de 750 mg / L é eficiente para o enraizamento de estacas de M. biondii Pamp, visto que potencializou o processo de atividades de enzimas antioxidantes e os níveis de hormônios endógenos, além de reduzir o tempo de formação de raízes, o que fica evidente nas observações anatômicas.

Morpho-physiological and phytohormonal changes during the induction of adventitious root development stimulated by exogenous IBA application in Magnolia biondii Pamp

Abstract Magnolia biondii Pamp is an important ornamental tree species widely grown and used as a rootstock in the propagation of different Magnolia varieties. In the current studies, anatomical, physiological and endogenous hormones were studied to check the effect of IBA 750 mg/L on the adventitious rooting and to provide theoretical and technical support for the propagation of Magnolia biondii Pamp through stem cuttings. Two thousand stem cuttings were prepared and divided into two groups i.e., IBA treated cuttings and water control. For the evaluation of antioxidant enzyme activities, and endogenous hormones levels, samples were collected on the day of planting and each 5th day and further steps were carried out in the laboratory according to the protocols and proper precautions. For the anatomical observations, samples were collected on the 13th, 15th, and 17th day for IBA treated cuttings while 21st, 23rd, and 25th day for control. Collected samples were preserved in the FAA solution and further observations were carried out in the laboratory. Anatomical observations showed that it took 13 days for the differentiation of root primordia to the appearance of young adventitious roots in IBA treated cuttings, while it took 21 days to develop primordia in the control. Antioxidant enzyme activities involved in ROS were significantly higher in the IBA treated cuttings compared to control. POD showed a peak on the 13th day before the emergence of roots in IBA treated cuttings while it showed a peak on the 21st day in the control. PPO showed a peak on the 21st day in the IBA treated cuttings while it showed a peak on the 29th day in the control. SOD showed a peak on the 17th day in IBA treated cuttings, while it showed a peak on the 25th day in the control. Exogenous application of IBA enhanced the endogenous IAA and GA3 levels compared to CK, while it reduced the levels of ABA continuously at the time of rooting and then increased gradually. Inclusively, our study suggests that IBA 750 mg/L is efficient for the rooting of Magnolia biondii Pamp cuttings, as it enhanced the process of antioxidant enzyme activities, endogenous hormones levels and reduced the time of root formation which is evident from the anatomical observations.

Resumo Magnolia biondii Pamp é uma importante espécie de árvore ornamental muito cultivada e utilizada como porta-enxerto na propagação de diferentes variedades de Magnolia. Nos estudos atuais, hormônios anatômicos, fisiológicos e endógenos foram estudados para verificar o efeito do AIB na dose de 750 mg / L no enraizamento adventício e fornecer suporte teórico e técnico para a propagação de M. biondii Pamp por meio de estacas. Duas mil estacas foram preparadas e divididas em dois grupos, ou seja, tratadas com AIB e controle de água. Para a avaliação das atividades das enzimas antioxidantes e dos níveis de hormônios endógenos, as amostras foram coletadas no dia do plantio e a cada 5 dias, enquanto as demais etapas foram realizadas em laboratório de acordo com os protocolos e os devidos cuidados. Para as observações anatômicas, as amostras foram coletadas no 13º, 15º e 17º dias para estacas tratadas com AIB e no 21º, 23º e 25º dias para o controle. As amostras coletadas foram preservadas em solução FAA, e outras observações foram realizadas em laboratório. Observações anatômicas mostraram a necessidade de 13 dias para a diferenciação dos primórdios radiculares até o aparecimento de raízes adventícias jovens em estacas tratadas com AIB e de 21 dias para o desenvolvimento dos primórdios no controle. As atividades das enzimas antioxidantes envolvidas nas ROS foram significativamente maiores nas estacas tratadas com AIB em comparação com o controle. A POD apresentou pico no 13º dia antes da emergência das raízes nas estacas tratadas com AIB, enquanto no 21º dia apresentou pico no controle. A PPO teve pico no 21º dia nas estacas tratadas com AIB e no 29º dia no controle. A SOD apresentou pico no 17º dia nas estacas tratadas com AIB e no 25º dia no controle. A aplicação exógena de AIB aumentou os níveis endógenos de IAA e GA3 em relação ao controle, enquanto reduziu os níveis de ABA continuamente no momento do enraizamento e, em seguida, aumentou gradativamente. Inclusive, nosso estudo sugere que o AIB na dose de 750 mg / L é eficiente para o enraizamento de estacas de M. biondii Pamp, visto que potencializou o processo de atividades de enzimas antioxidantes e os níveis de hormônios endógenos, além de reduzir o tempo de formação de raízes, o que fica evidente nas observações anatômicas.

Niveles de colinesterasa sérica en agricultores de San Pablo de Borbur, Boyacá, expuestos a organofosforados

Introducción: Las colinesterasas son enzimas que se encargan de hidrolizar la acetilcolina en ácido acético y colina, poniéndole fin a la transmisión nerviosa a lo largo de la sinapsis de las uniones neuromusculares. La medición de la actividad de la colinesterasa sérica constituye un indicador del efecto causado por la exposición prolongada a los organofosforados. Objetivo: Determinar los niveles de colinesterasa sérica y factores relacionados con la exposición a organofosforados en agricultores de la vereda de Páramo Lagunas de San Pablo de Borbur, Boyacá, Colombia. Metodología: Estudio prospectivo, de corte transversal, con una muestra de 57 trabajadores. A cada individuo se le aplicó una encuesta de datos sociodemográficos y factores laborales, posteriormente se les tomó una muestra de sangre venosa en ayuno de 8-12 horas; con el fin de determinar las concentraciones de colinesterasa sérica (kit Colinesterasa Butiriltiocolina Biosystems®) con el equipo automatizado de química clínica A-15 de Biosystems®. Resultados: El rango de edad de los participantes estuvo entre los 22 y 64 aflos, el 72 % de los individuos pertenecía al sexo masculino. El 3,5 % (2 varones) presentó valores inferiores al intervalo biológico de referencia (IBR), el 88 % de las personas afirmó realizar tareas con plaguicidas y el 54 % afirmó no utilizar los elementos de protección personal (EPP) al trabajar con estas sustancias. Conclusiones: Se evidenció la falta de escolaridad y la ausencia del acompaflamiento técnico en esta zona, lo que induce a que estos agricultores realicen procesos agrícolas relacionados con la aplicación de plaguicidas sin el adecuado conocimiento y sin la utilización adecuada de EPP.

Introduction: Cholinesterases are enzymes responsible for hydrolyzing acetylcholine in acetic acid and choline, which ends nerve transmission along the synapse of neuromuscular junctions. Measurement of serum cholinesterase activity acts as an indicator of the effect caused by prolonged exposure to organophosphates and carbamates Objective: To determine serum cholinesterase levels and factors related to exposure to organophosphates in farmers from the county of Páramo Lagunas in San Pablo de Borbur, Boyacá, Colombia. Methodology: Prospective, cross-sectional study, with a sample of 57 agricultural workers, a survey of sociodemographic data and labor factors was applied to each individual and a venous blood sample was taken in an 8-12 hour fasting, Serum cholinesterase concentrations were determined (Biosystems® Butyrylthiocholine Cholinesterase kit), by means of the Biosystems® A-15 automated clinical chemistry kit. Results: The age range of the participants was between 22 and 64 years old, 72% of the individuals belonged to the male sex. 3.5% (2 male individuals) presented values lower than the biological reference interval (BRI); 88% of the people affirmed to carry out tasks with pesticides and 54% of them affirmed not to use personal protective equipment (PPE) when working with these substances. Conclusions: The lack of schooling was evidenced in most of the farmers, as well as the absence of technical support to this area, which induces these farmers to carry out agricultural processes such as pesticide application, without adequate knowledge and without the proper use of PPE.

Implementación de una metodología para la detección de marcadores bioquímicos en la tirosinemia tipo 1

Fundamento: la tirosinemia hereditaria tipo I o tirosinemia hepato-renal es una enfermedad autosómica recesiva causada por la deficiencia de la enzima fumarilacetoacetato hidrolasa. Debido a su complejidad metabólica, su confirmación lleva aparejado, un conjunto de métodos altamente costosos. Objetivo: implementar una metodología de trabajo para la detección de metabolitos marcadores de la tirosinemia tipo 1. Método: se realizó un estudio descriptivo y transversal en una serie de casos evaluados en el período comprendido entre enero del 2021 a febrero del 2023. Como examen inicial se realizaron las pruebas cualitativas de α nitroso beta naftol y 2,4 dinitrofenilhidracina para la identificación de la tirosina y los α cetoácidos respectivamente. Luego se realizó el método HPLC para la cuantificación de la tirosina y CG-EM para la determinación del perfil cromatográfico en orina como técnicas confirmatorias. Resultados las pruebas cualitativas resultaron positivas para la tirosina y sus metabolitos, así como, para los alfa cetoácidos. El perfil de ácidos orgánicos mostró excreción elevada de los metabolitos marcadores de la enfermedad en 8 casos, a los cuales se les fue realizada la cuantificación de la tirosina que resultaron positivos de padecer la enfermedad. Conclusiones: la implementación de la metodología resultó ser una herramienta valiosa en el diagnóstico temprano de la enfermedad.

Foundation: hereditary tyrosinemia type I or hepato-renal tyrosinemia is an autosomal recessive disease caused by deficiency of the enzyme fumarylacetoacetate hydrolase. Due to its metabolic complexity, its confirmation requires a set of highly expensive methods. Objective: to implement a work methodology for the detection of marker metabolites of type 1 tyrosinemia. Method: a descriptive and cross-sectional study was carried out in a series of cases evaluated in the period from January 2021 to February 2023. As an initial examination, qualitative tests of α nitroso beta naphthol and 2,4 dinitrophenylhydrazine were carried out for the identification of tyrosine and α keto acids respectively. Then, the HPLC method was performed for the quantification of tyrosine and GC-MS for the determination of the chromatographic profile in urine as confirmatory techniques. Results: qualitative tests were positive for tyrosine and its metabolites, as well as for alpha keto acids. The organic acid profile showed elevated excretion of the disease marker metabolites in 8 cases, in which tyrosine quantification was performed, which were positive for suffering from the disease. Conclusions: the implementation of the methodology turned out to be a valuable tool in the early diagnosis of the disease.