Biomedica : revista del Instituto Nacional de Salud最新文献

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Oral mucormycosis associated with COVID-19 and diabetes mellitus: Case report and literature review 与COVID-19和糖尿病相关的口腔黏液瘤病:病例报告和文献综述
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.6970
Julio César Velasco, Ledmar Jovanny Vargas, Lorena García, Iván José Torres, Iván Camilo González
{"title":"Oral mucormycosis associated with COVID-19 and diabetes mellitus: Case report and literature review","authors":"Julio César Velasco, Ledmar Jovanny Vargas, Lorena García, Iván José Torres, Iván Camilo González","doi":"10.7705/biomedica.6970","DOIUrl":"10.7705/biomedica.6970","url":null,"abstract":"<p><p>Mucormycosis is an invasive opportunistic fungal infection with high mortality, mainly detected in people with COVID-19, especially those with underlying diseases such as diabetes mellitus. Mucormycosis prevalence is 0.005 to 1.7 cases per million inhabitants, and it has been increasing in countries like India and Pakistan. This mycosis can affect different organs, and clinical manifestations reflect the transmission mechanism. Frequent forms are rhino-orbital-cerebral and pulmonary. This disease should be suspected in patients with necrotic injuries on mucous membranes or skin.\u0000We present a case of a patient with diabetes mellitus and diagnosed with oral mucormycosis associated with COVID-19.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11186624/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140873421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genomic epidemiology of SARS-CoV-2 δ sublineages of the second wave of 2021 in Antioquia, Colombia 哥伦比亚安蒂奥基亚省 2021 年第二波 SARS-CoV-2 δ 亚系的基因组流行病学研究
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.6862
Cristian Arbey Velarde, Uriel Hurtado, Andres Fernando Cardona Rios, Celeny Ortiz, Idabely Betancur
{"title":"Genomic epidemiology of SARS-CoV-2 δ sublineages of the second wave of 2021 in Antioquia, Colombia","authors":"Cristian Arbey Velarde, Uriel Hurtado, Andres Fernando Cardona Rios, Celeny Ortiz, Idabely Betancur","doi":"10.7705/biomedica.6862","DOIUrl":"10.7705/biomedica.6862","url":null,"abstract":"<p><p>Introduction. During the development of the SARS-CoV-2 pandemic in Antioquia, we experienced epidemiological peaks related to the α, ɣ, β, ƛ, and δ variants. δ had\u0000the highest incidence and prevalence. This lineage is of concern due to its clinical manifestations and epidemiological characteristics. A total of 253 δ sublineages have been reported in the PANGOLIN database. The sublineage identification through genomic analysis has made it possible to trace their evolution and propagation.\u0000Objective. To characterize the genetic diversity of the different SARS-CoV-2 δ sublineages in Antioquia and to describe its prevalence.\u0000Materials and methods. We collected sociodemographic information from 2,675 samples, and obtained 1,115 genomes from the GISAID database between July 12th, 2021, and January 18th, 2022. From the analyzed genomes, 515 were selected because of their high coverage values (>90%) to perform phylogenetic analysis and to infer allele frequencies of mutations of interest.\u0000Results. We characterized 24 sublineages. The most prevalent was AY.25. Mutations of interest as L452R, P681R, and P681H were identified in this sublineage, comprising a frequency close to 0.99.\u0000Conclusions. This study identified that the AY.25 sublineage has a transmission advantage compared to the other δ sublineages. This attribute may be related to the presence of the L452R and P681R mutations associated in other studies with higher evasion of the immune system and less efficacy of drugs against SARS-CoV-2.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11189595/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140862166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vitamin D-associated genetic variants in the Brazilian population: Investigating potential instruments for Mendelian randomization. 巴西人口中与维生素 D 相关的基因变异:调查孟德尔随机化的潜在工具。
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.6972
Caroline De Souza Silverio, Carolina Bonilla
{"title":"Vitamin D-associated genetic variants in the Brazilian population: Investigating potential instruments for Mendelian randomization.","authors":"Caroline De Souza Silverio, Carolina Bonilla","doi":"10.7705/biomedica.6972","DOIUrl":"10.7705/biomedica.6972","url":null,"abstract":"<p><strong>Introduction: </strong>Vitamin D is required for bone and mineral metabolism and participates in the regulation of the immune response. It is also linked to several chronic diseases and conditions, usually in populations of European descent. Brazil presents a high prevalence of vitamin D deficiency and insufficiency despite the widespread availability of sunlight in the country. Thus, it is important to investigate the role of vitamin D as a risk factor for disease and to establish causal relationships between vitamin D levels and health-related outcomes in the Brazilian population.</p><p><strong>Objective: </strong>To examine genetic variants identified as determinants of serum vitamin D in genome-wide association studies of European populations and check whether the same associations are present in Brazil. If so, these single nucleotide polymorphisms (SNPs) could be developed locally as proxies to use in genetically informed causal inference methods, such as Mendelian randomization.</p><p><strong>Materials and methods: </strong>We extracted SNPs associated with vitamin D from the genomewide association studies catalog. We did a literature search to select papers ascertaining these variants and vitamin D concentrations in Brazil.</p><p><strong>Results: </strong>GC was the gene with the strongest association with vitamin D levels, in agreement with existing findings in European populations. However, VDR was the most investigated gene, regardless of its non-existing association with vitamin D in the genomewide association studies.</p><p><strong>Conclusions: </strong>More research is needed to validate sound proxies for vitamin D levels in Brazil, for example, prioritizing GC rather than VDR.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11349065/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140861522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative analysis of health-related fitness in patients with acute versus chronic Chagas disease. 急性和慢性南美锥虫病患者健康相关体能的比较分析。
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.6892
Clara Narcisa Silva Almeida, Ariane Cardoso Vasconcelos, Caroline da Silva Sousa, Nivea Thayanne Melo Silva, Dilma do Socorro Moraes de Souza, Carlos Alberto Marques de Carvalho, Suellen Alessandra Soares de Moraes, Laura Maria Tomazi Neves
{"title":"Comparative analysis of health-related fitness in patients with acute versus chronic Chagas disease.","authors":"Clara Narcisa Silva Almeida, Ariane Cardoso Vasconcelos, Caroline da Silva Sousa, Nivea Thayanne Melo Silva, Dilma do Socorro Moraes de Souza, Carlos Alberto Marques de Carvalho, Suellen Alessandra Soares de Moraes, Laura Maria Tomazi Neves","doi":"10.7705/biomedica.6892","DOIUrl":"10.7705/biomedica.6892","url":null,"abstract":"<p><strong>Introduction: </strong>Although Chagas disease causes high levels of morbidity, the muscle function and tolerance to physical activity in Chagas disease patients are still not completely understood.</p><p><strong>Objective: </strong>To compare health-related fitness of patient groups with acute Chagas disease versus chronic Chagas disease.</p><p><strong>Materials and methods: </strong>We conducted a cross-sectional study involving 18 patients. The data were obtained from patient´s records, and functional capacity was measured with the sixminute walk test, the peripheral muscle strength with handgrip strength, and respiratory muscle strength using the maximum inspiratory pressure and the maximum expiratory pressure.</p><p><strong>Results: </strong>The 18 patients were divided in two groups: acute Chagas disease (n=9) and chronic Chagas disease (n=9). The distance walked in the six-minute walk test was lower than the predicted distance walked in both groups (p < 0.0001). The maximum expiratory pressure was lower than the predicted one (p = 0.005), and statistically significant for chronic Chagas disease patients (p = 0.02). Heart rate increased faster in the chronic Chagas disease group within the first two minutes of the six-minute walk test (p = 0.04). The sixminute walk test in the acute Chagas disease group presented a strong correlation with peripheral muscle strength (p = 0.012) and maximum inspiratory pressure (p = 0.0142), while in the chronic Chagas disease group, only peripheral muscle strength and maximum inspiratory pressure were correlated (p = 0.0259).</p><p><strong>Conclusion: </strong>The results suggest lowered functional capacity and reduced respiratory and peripheral muscle strength in patients with Chagas disease, although no differences were observed between groups. The early increase in heart rate during exercise in the chronic Chagas disease group implies a greater myocardial overload.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11349066/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140871877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Incidence of metabolic bone disease in neonates under 32 gestational weeks at the Hospital Universitario de Santander in Colombia. 哥伦比亚桑坦德大学医院 32 孕周以下新生儿代谢性骨病的发病率。
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.6926
Erika Ruiz, Diego Ernesto Piamonte, Deisy Tatiana Gómez, Luis Alfonso Díaz, Luis Alfonso Pérez
{"title":"Incidence of metabolic bone disease in neonates under 32 gestational weeks at the Hospital Universitario de Santander in Colombia.","authors":"Erika Ruiz, Diego Ernesto Piamonte, Deisy Tatiana Gómez, Luis Alfonso Díaz, Luis Alfonso Pérez","doi":"10.7705/biomedica.6926","DOIUrl":"10.7705/biomedica.6926","url":null,"abstract":"<p><strong>Introduction: </strong>Metabolic bone disease of premature infants is a rare complication characterized by a lower mineral content in bone tissue.</p><p><strong>Objective: </strong>To establish the incidence of metabolic bone disease in premature infants and to determine associated risk factors.</p><p><strong>Materials and method: </strong>We conducted a descriptive prospective cohort study for one year in all newborns under 32 gestational weeks, or 1,500 g, at the Hospital Universitario de Santander to determine the incidence of metabolic bone disease. We collected demographic data and prenatal histories of the selected patients, and later, we measured serum alkaline phosphatase and serum phosphorus at the third week of birth, having as reference values for diagnosis less than 5.6 mg/dl for the first one and more than 500 UI/L for the second one. We applied statistical tools for data analysis, such as average proportions, dispersion, distribution and association measures, and binomial regression.</p><p><strong>Results: </strong>From a total of 58 patients, 7 had a diagnosis of metabolic bone disease, with an incidence of 12%. The weight was reported as an independent variable for the development of the disease, being significant in children under 1,160 g, as well as prolonged parenteral nutrition for more than 24 days. When performing the multivariate analysis, low weight and short time of parenteral nutrition appeared as risk factors; in the same way, maternal age below 22 years is associated with a higher relative risk, even more than a newborn weight inferior to 1,160 g.</p><p><strong>Conclusion: </strong>Establishing an early intervention in patients with metabolic bone disease enhancing risk factors, such as low weight and prolonged parenteral nutrition, is critical to prevent severe complications.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11185430/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140874394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A hospital management algorithm for acute poisoning by Paraquat® in a pediatric population, a series of cases 儿科急性百草枯中毒的医院管理算法,系列病例
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.7024
Alejandro Padilla-Guzmán, Olga L Prado, David Ballesteros, Viviana Rivera, Yessica Bravo, Luisa Murillo, Sandra Narváez, Jessica M Forero
{"title":"A hospital management algorithm for acute poisoning by Paraquat® in a pediatric population, a series of cases","authors":"Alejandro Padilla-Guzmán, Olga L Prado, David Ballesteros, Viviana Rivera, Yessica Bravo, Luisa Murillo, Sandra Narváez, Jessica M Forero","doi":"10.7705/biomedica.7024","DOIUrl":"10.7705/biomedica.7024","url":null,"abstract":"<p><p>Paraquat®, or N,N′-dimethyl-4,4′-bipyridinium dichloride, is a bipyridyl compound used as a non-selective herbicide and desiccant that can cause acute poisoning through all routes of exposure. There is no known antidote, and the available treatments are based on avoiding its absorption and timely removing it, in adults and children. We describe a case series of 14 pediatric patients from the department of Cauca, Colombia, with acute intoxication after oral intake of paraquat. Patients were referred to a medium-high complexity hospital in southwestern Colombia and treated according to an institutional protocol for acute paraquat poisoning. Acute paraquat poisoning after oral ingestion is associated with a high mortality rate, even with timely medical attention, as the compound has no known antidote and quickly reaches systemic concentrations for fulminant poisoning. Based on the available literature, our center has proposed a clinical protocol including early standard management, immunosuppressive and antioxidant treatments, and systemic removal techniques. This protocol suggests an adequate approach to acute paraquat poisoning in the pediatric population.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11166252/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140863022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Infectious etiology and indicators of malabsorption or intestinal injury in childhood diarrhea. 儿童腹泻的感染病因和吸收不良或肠道损伤指标。
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.6913
Adson Santos Martins, Samara Alves Santos, Cláudia Alves da Silva Lisboa, Tânia Fraga Barros, Tereza Cristina Medrado Ribeiro, Hugo Da Costa-Ribeiro, Ângela Peixoto de Mattos, Patrícia Silva de Almeida Mendes, Carlos Maurício Cardeal Mendes, Edna Lúcia Souza, Ana Lúcia Moreno Amor, Neci Matos Soares, Márcia Cristina Aquino Teixeira
{"title":"Infectious etiology and indicators of malabsorption or intestinal injury in childhood diarrhea.","authors":"Adson Santos Martins, Samara Alves Santos, Cláudia Alves da Silva Lisboa, Tânia Fraga Barros, Tereza Cristina Medrado Ribeiro, Hugo Da Costa-Ribeiro, Ângela Peixoto de Mattos, Patrícia Silva de Almeida Mendes, Carlos Maurício Cardeal Mendes, Edna Lúcia Souza, Ana Lúcia Moreno Amor, Neci Matos Soares, Márcia Cristina Aquino Teixeira","doi":"10.7705/biomedica.6913","DOIUrl":"10.7705/biomedica.6913","url":null,"abstract":"<p><strong>Introduction: </strong>The multifactorial etiology of gastroenteritis emphasizes the need for different laboratory methods to identify or exclude infectious agents and evaluate the severity of diarrheal disease.</p><p><strong>Objective: </strong>To diagnose the infectious etiology in diarrheic children and to evaluate some fecal markers associated with intestinal integrity.</p><p><strong>Materials and methods: </strong>The study group comprised 45 children with diarrheal disease, tested for enteropathogens and malabsorption markers, and 76 children whose feces were used for fat evaluation by the traditional and acid steatocrit tests.</p><p><strong>Results: </strong>We observed acute diarrhea in 80% of the children and persistent diarrhea in 20%. Of the diarrheic individuals analyzed, 40% were positive for enteropathogens, with rotavirus (13.3%) and Giardia duodenalis (11.1%) the most frequently diagnosed. Among the infected patients, occult blood was more evident in those carrying pathogenic bacteria (40%) and enteroviruses (40%), while steatorrhea was observed in infections by the protozoa G. duodenalis (35.7%). Children with diarrhea excreted significantly more lipids in feces than non-diarrheic children, as determined by the traditional (p<0.0003) and acid steatocrit (p<0.0001) methods. Moreover, the acid steatocrit method detected 16.7% more fecal fat than the traditional method.</p><p><strong>Conclusions: </strong>Childhood diarrhea can lead to increasingly severe nutrient deficiencies. Steatorrhea is the hallmark of malabsorption, and a stool test, such as the acid steatocrit, can be routinely used as a laboratory tool for the semi-quantitative evaluation of fat malabsorption in diarrheic children.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11349067/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140867093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Severe adenovirus infection outbreak in Colombia: Experience from a tertiary pediatric hospital in 2022. 哥伦比亚爆发严重腺病毒感染:2022 年一家三级儿科医院的经验。
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.7047
Natalia Vélez-Tirado, Lina Castaño-Jaramillo, Sonia Restrepo-Gualteros, Catalina Alcalá-Lozano, Erika Ruge, Carolina Puente, Diana Li-Zeng, Diego Chaparro-Arce, María Camila Beltrán-Dimas, Juan Francisco López, Miguel Luengas-Monroy, Diego Galvis-Trujillo, Iván Gutiérrez-Tobar, Pablo Vásquez-Hoyos, Germán Camacho-Moreno
{"title":"Severe adenovirus infection outbreak in Colombia: Experience from a tertiary pediatric hospital in 2022.","authors":"Natalia Vélez-Tirado, Lina Castaño-Jaramillo, Sonia Restrepo-Gualteros, Catalina Alcalá-Lozano, Erika Ruge, Carolina Puente, Diana Li-Zeng, Diego Chaparro-Arce, María Camila Beltrán-Dimas, Juan Francisco López, Miguel Luengas-Monroy, Diego Galvis-Trujillo, Iván Gutiérrez-Tobar, Pablo Vásquez-Hoyos, Germán Camacho-Moreno","doi":"10.7705/biomedica.7047","DOIUrl":"10.7705/biomedica.7047","url":null,"abstract":"<p><p>Introduction. During the SARS-CoV-2 pandemic, many countries experienced decreased respiratory virus circulation, followed by an out-of-season outbreak. In a pediatric hospital in Colombia, we observed a surge in severe adenovirus infections, leading to concerns about the impact of eased public health restrictions and immune debt in children under five years old.\u0000Objective. To describe the clinical characteristics of patients with severe adenovirus infection in a pediatric hospital in Colombia.\u0000Materials and methods. We reviewed the data of 227 patients with severe adenovirus infection at the Fundación Hospital Pediátrico La Misericordia.\u0000Results. A total of 196 patients were included in this study. The median age was two years, and 62% were male. Adenoviruses were isolated from all patients’ samples. Ninetyseven percent were admitted to the pediatric intensive care unit, 94% required respiratory support, and the in-hospital lethality rate was 11%.\u0000Conclusion. In 2022, there was an outbreak of severe adenovirus infections, affecting mainly children under five years of age, with higher-than-usual mortality.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11156483/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140857771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Standardization and validation of a high-efficiency liquid chromatography with a diode-array detector (HPLC-DAD) for voriconazole blood level determination. 高效液相色谱-二极管阵列检测器(HPLC-DAD)测定伏立康唑血药浓度的标准化和验证。
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2024-03-31 DOI: 10.7705/biomedica.6959
Juan D Zapata, Diego H Cáceres, Luz E Cano, Catalina De Bedout, Sinar D Granada, Tonny W Naranjo
{"title":"Standardization and validation of a high-efficiency liquid chromatography with a diode-array detector (HPLC-DAD) for voriconazole blood level determination.","authors":"Juan D Zapata, Diego H Cáceres, Luz E Cano, Catalina De Bedout, Sinar D Granada, Tonny W Naranjo","doi":"10.7705/biomedica.6959","DOIUrl":"10.7705/biomedica.6959","url":null,"abstract":"<p><strong>Introduction: </strong>A specialized service for antifungal blood level determination is not available in Colombia. This service is essential for the proper follow-up of antifungal therapies.</p><p><strong>Objective: </strong>To standardize and validate a simple, sensitive, and specific protocol based on high-performance liquid chromatography with a diode array detector for voriconazole blood level quantification.</p><p><strong>Materials and methods: </strong>We used an Agilent HPLC™ series-1200 equipment with a UVdiode array detector with an analytical column Eclipse XDB-C18 and pre-column Eclipse- XDB-C18 (Agilent). We used voriconazole as the primary control and posaconazole as an internal control. We performed the validation following the Food and Drug Administration (FDA) recommendations.</p><p><strong>Results: </strong>The best chromatographic conditions were: Column temperature of 25°C, UV variable wavelength detection at 256 nm for voriconazole and 261 nm for posaconazole (internal standard); 50 μl of injection volume, 0,8 ml/min volume flow, 10 minutes of run time, and mobile phase of acetonitrile:water (60:40). Finally, retention times were 3.13 for voriconazole and 5.16 minutes for posaconazole. Quantification range varied from 0.125 μg/ml to 16 μg/ml.</p><p><strong>Conclusion: </strong>The selectivity and chromatographic purity of the obtained signal, the detection limits, and the standardized quantification make this method an excellent tool for the therapeutic monitoring of patients treated with voriconazole.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223762/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140869163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
B-cell lymphocytosis in relatives of Colombian patients with chronic B-cell lymphoproliferative disorders 哥伦比亚慢性 B 淋巴细胞增生综合征患者亲属中的单克隆 B 细胞淋巴细胞增多症。
Biomedica : revista del Instituto Nacional de Salud Pub Date : 2023-12-29 DOI: 10.7705/biomedica.7099
Mike Celis, Yohanna Navarro, Norma Serrano, Daniel Martínez, Wendy Nieto
{"title":"B-cell lymphocytosis in relatives of Colombian patients with chronic B-cell lymphoproliferative disorders","authors":"Mike Celis, Yohanna Navarro, Norma Serrano, Daniel Martínez, Wendy Nieto","doi":"10.7705/biomedica.7099","DOIUrl":"10.7705/biomedica.7099","url":null,"abstract":"<p><p>Introduction. Monoclonal B-cell lymphocytosis generally precedes chronic lymphocytic leukemia, affecting about 12% of the healthy adult population. This frequency increases in relatives of patients with chronic B-cell lymphoproliferative disorders.\u0000Objective. To determine the frequency of monoclonal B-cell lymphocytosis in relatives of patients with chronic B-cell lymphoproliferative disorders, their immunophenotypic/cytogenetic characteristics, a possible relationship with infectious agents, and short-term follow-up in the Colombian population.\u0000Materials and methods. Fifty healthy adults with a family history of chronic B-cell lymphoproliferative disorders were studied using multiparametric flow cytometry,\u0000cytogenetic/serological testing, lifestyle survey, and 2-year follow-up.\u0000Results. The frequency of monoclonal B-cell lymphocytosis found was 8%, with a predominance of female gender and advanced age, increasing to 12.5% for individuals with\u0000a family history of chronic lymphocytic leukemia. Three out of four individuals presented chronic lymphocytic leukemia-type immunophenotype, all with low counts. In turn, a significantly higher number of cells/μl is observed in these individuals in T lymphocyte subpopulations, together with a greater predisposition to the disease. The described clonal populations increase over time in a non-significant manner.\u0000Conclusions. The frequency and behavior of monoclonal B-cell lymphocytosis in patients with family history of chronic B-cell lymphoproliferative disorders are like those found in related studies, which suggests that there is no involvement of more relevant genes that can trigger uncontrolled clonal proliferation, but that generates immunological deregulation that could justify a greater risk of serious infection in these individuals.</p>","PeriodicalId":101322,"journal":{"name":"Biomedica : revista del Instituto Nacional de Salud","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10895924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139428242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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