Osteonecrosis de los Maxilares Asociada a Medicamentos y Anticuerpos Monoclonales. Revisión Sistemática de la Literatura y Propuesta para la Prevención y Manejo en un Procedimiento de Exodoncia

El objetivo de esta revisión sistemática consistió en la búsqueda de medidas preventivas y de tratamiento de osteonecrosis asociada a medicamentos y anticuerpos monoclonales para proponer un nuevo protocolo en caso de ser necesario. Esta revisión bibliográfica se realizó en PubMed/MedLine, Cochrane, SciELO y EBSCO; delimitando la búsqueda desde el 1 de enero de 2017 al 22 de septiembre de 2022. Se incluyeron un total de 8 artículos. A pesar de que se incluyó la mayor cantidad de evidencia certera se obtuvieron resultados no significativos, actualmente hay un protocolo de la Asociación Americana de Cirugía Oral y Maxilofacial sin embargo se necesita más evidencia clínica.

The objective of this systematic review was to search for preventive and treatment measures for osteonecrosis associated with medications and monoclonal antibodies to propose a new protocol if necessary. This literature review was conducted in PubMed/MedLine, Cochrane, SciELO, and EBSCO; limiting the search from January 1, 2017 to September 22, 2022. A total of 8 articles were included. Although the greatest amount of accurate evidence was included, non-significant results were obtained. There is currently a protocol from the American Association of Oral and Maxillofacial Surgery, however, more clinical evidence is needed.

Aceite esencial de hojas de Minthostachys mollis [HBK] Griseb. del Ecuador: extracción, composición química, capacidad antioxidante y actividad antimicrobiana / Essential oil of Minthostachys mollis [HBK] Griseb. leaves from Ecuador: extraction, chemical composition, antioxidant capacity and antimicrobial activity

The aim of this study was to optimize by response surface design, the extraction of the leaf essential oil (EO) from Minthostachys mollis [HBK] Griseb., grown in Ecuador, using steam distillation. The factors used were extraction time (XTIE) of 60, 105 and 150 min and plant material/water ratio (XRMA) of 1:3, 1:4 and 1:5. The optimal combination was reached with XRMA 1:5 and XTIE 150 min, obtaining a process yield of 0.67%. The chemical composition of the EO analyzed by GC - MS was determined, where the main compounds were carvacryl acetate (44.01%), carvacrol (16.51%) and menthone (8.20%). The anti oxidant capacity of EO was evaluated using the FRAP and ABTS methodologies, with an IC 50 243.21 µmol Fe 2+ /g and 0.12 mg/mL, respectively. In addition, the antimicrobial activity of EO was found against Pseudomonas aeruginosa , Salmonella enterica , Escherich ia coli and Staphylococcus aureus .

El objetivo del estudio fue optimizar, mediante un diseño de superficie respuesta, la extracción d el aceite esencial (AE) de hojas de Minthostachys mollis [HBK] Griseb. del Ecuador, mediante destilación por arrastre de vapor. Los factores fueron el tiempo de extracción (XTIE) de 60, 105 y 150 min, y relación de material vegetal/ agua destilada (XRMA) d e 1:3, 1:4 y 1:5. La combinación óptima se logró con XTIE 150 min y XRMA 1:5 para un rendimiento de 0,67%. Se determinó la composición química del AE por GC - MS donde los compuestos mayoritarios fueron acetato de carvacrilo (44,01%), carvacrol (16,51%) y me ntona (8,20%). Se evaluó la capacidad antioxidante del AE por las metodologías FRAP y ABTS, con CI 50 de 243,21 µmol Fe 2+ /g y 0,12 mg/mL, respectivamente. Además, se demostró la actividad antimicrobiana contra Pseudomonas aeruginosa , Salmonella enterica , Es cherichia coli y Staphylococcus aureus .

Association between hyperglycemia and post-exodontia complications in patients with type ii diabetes mellitus: a scoping review / Asociación entre hiperglucemia y complicaciones post-exodoncia en pacientes con diabetes mellitus tipo ii: scoping review

Introduction: Diabetes mellitus (DM) is a prevalent chronic metabolic disorder worldwide, with Type II DM (T2DM) emerging as the most widespread variant. In Chile, approximately 11% of adults aged 20 to 79 suffer from this condition. Given its high prevalence, dental surgeons should be trained to evaluate risk factors, particularly the potential complications linked to tooth extraction in individuals with T2DM. Objetive: To describe the available scientific evidence on post-exodontia complications associated with hyperglycemia in patients with Type II diabetes mellitus. Materials and Methods: An exploratory systematic review was conducted following the PRISMA-ScR extension protocols using the databases PubMed, EBSCO, Scopus and the Cochrane Library. The search employed the following algorithms: (("Diabetic patient complications" AND "Dental extractions")), (("Diabetes" AND "tooth extraction")), (("Glycemia" AND "Tooth extraction complications"), (("Blood glucose" AND "Tooth extractions"), (("Dental extraction sockets" AND "Diabetics"). Results: Out of a total of 973 articles, 25 were included for this review. Six relevance criteria were considered, revealing safety parameters for conducting extractions in patients with T2DM, with capillary blood glucose levels not exceeding 200 mg/dL for elective extractions and 240 mg/dL for emergency extractions. Conclusions: There is limited evidence correlating threshold values of hyperglycemia with post-extraction complications in patients with T2DM. Most authors agree that the primary concern is not T2DM itself, but hyperglycemia. Furthermore, there is minimal consistency in the recommended care protocols for these patients.

Introducción: La diabetes mellitus (DM) es un trastorno metabólico crónico. A nivel mundial, la DM tipo II (DM2) resulta ser la más frecuente. En Chile, un 11% de la población adulta entre los 20 y 79 años la padece. Su alta prevalencia, requiere de un cirujano dentista preparado para valorar los factores de riesgo, como las posibles complicaciones asociadas a la extracción dental en estos pacientes. Objetivo: Describir la evidencia científica disponible sobre complicaciones post-exodoncia asociadas a hiperglicemia en pacientes con diabetes mellitus tipo II. Materiales y Métodos: Se realizó una revisión sistemática exploratoria bajo los protocolos de extensión PRISMA-ScR utilizando las bases de datos, PubMed, EBSCO, Scopus y Cochrane Library con los algoritmos de búsqueda (("Diabetic patient complications" AND "Dental extractions")), (("Diabetes"AND "Tooth extraction")), (("Glycemia" AND "tooth extraction complications")), (("Blood glucose" AND "Tooth extractions")), (("Dental extraction sockets"AND "Diabetics")). Resultado: De un total de 973 artículos se incluyeron 25 artículos para esta revisión. Se consideraron 6 criterios de pertinencia, los cuales mostraron parámetros de seguridad para realizar exodoncias, en pacientes con DM2, con la glucemia capilar no mayor a 200mg/dl en caso de ser electiva y 240 mg/dl en exodoncia de urgencias. Conclusión: Existe poca evidencia que correlacione valores absolutos de hiperglucemia y complicaciones post exodoncia en pacientes con DM2. La mayoría de los autores concuerda en que el problema no es la DM2, sino la hiperglucemia. Existe poca uniformidad en los protocolos de atención recomendados para estos pacientes.

Experiencia de parto instrumental con vacuum en Hospital Público de Santiago de Chile / Experience of vacuum-assisted instrumental delivery in a Public Hospital in Santiago, Chile

Introducción: El vacuum es el instrumento de elección para asistir el parto instrumental en países desarrollados. Objetivo: El objetivo del estudio es exponer los resultados maternos y fetales del uso del vacuum en población chilena y promover su disponibilidad y uso en nuestro país y Latinoamérica. Método: El estudio se realizó entre octubre de 2017 y diciembre de 2021, incluyendo a pacientes que tuvieron parto instrumental con vacuum en el Hospital San Juan de Dios de Chile. Se compararon los partos exitosos con vacuum y los partos en los que se requirió el uso de otro instrumento o una cesárea posterior al uso del instrumento. Resultados: Se realizaron 153 vacuum, correspondientes al 28,59% del total de partos instrumentales. El 79,74% tuvo éxito. El 5,88% no recibió anestesia o se aplicó anestesia local. Solo el 3,27% presentó desgarro perineal con compromiso del esfínter anal. El 91,5% de los recién nacidos no tuvieron complicaciones fetales. Un 20,3% requirió reanimación neonatal. Conclusiones: El estudio muestra que el vacuum es una opción segura y efectiva de parto instrumental en nuestra población. La correcta capacitación y protocolos adecuados son necesarios para garantizar resultados exitosos.

Introduction: Vacuum extraction is the instrument of choice for assisting instrumental delivery in developed countries. Objective: The aim of the study is to present the maternal and fetal outcomes of vacuum use in the Chilean population and promote its availability and usage in our country and Latin America. Method: The study was performed between October 2017 and December 2021, including patients who underwent instrumental delivery with a vacuum extraction at the Hospital San Juan de Dios in Chile. Successful vacuum deliveries were compared with deliveries where another instrument was required, or a cesarean section was performed after instrument use. Results: A total of 153 vacuum deliveries were carried out, accounting for 28.59% of all instrumental deliveries. 79.74% were successful. 5.88% did not receive anesthesia or received local anesthesia. Only 3.27% experienced perineal tear with involvement of the anal sphincter. 91.5% of newborns had no fetal complications. 20.3% required neonatal resuscitation. Conclusions: The study demonstrates that the vacuum is a safe and effective option for instrumental delivery in our population. Proper training and appropriate protocols are necessary to ensure successful outcomes.

Wearable near-infrared spectroscopy: reliability and sensitivity among different endurance cycling exercise intensities

The present study investigated the reliability and sensitivity of a wearable near-infrared spectroscopy (wNIRS) device in moderate and heavy exercise intensity domains. On three separate days, eleven males performed an incremental test to exhaustion, and in the following visits, four submaximal constant-load bouts (i.e., test and retest) were performed in the moderate-intensity domain (100 and 130 W) and heavy-intensity domain (160 and 190 W). The local tissue oxygen saturation index (SmO2) and pulmonary oxygen uptake (V̇O2) were measured continuously. The absolute SmO2 and V̇O2 values and the change (Δ) from the 3rd to 6th min of exercise were calculated. There was good reliability for SmO2 measurements, as indicated by the high intraclass correlation coefficient analysis (ICC ≥0.84 for all) and low coefficient of variation between the two trials (CV ≤4.1% for all). Steady-state responses were observed for SmO2 and V̇O2 from the 3rd to the 6th min in the two moderate-intensity bouts (P>0.05), whereas SmO2 decreased and V̇O2 increased from the 3rd to the 6th min in the two heavy-intensity bouts (P<0.05). Together, these findings suggested that the SmO2 measured with a wNIRS device is reliable and sensitive to track local metabolic changes provoked by slight increments in exercise intensity.

La desaferentación dental como factor etiológico de disfunciones gustativas en ratas Wistar machos / Dental deafferentation as an etiologic factor of taste dysfunction in male Wistar rats / A surdeferentação dentária como fator etiológico das disfunções gustativas em ratos Wistar machos

RESUMEN Objetivo : Evaluar la influencia de la desaferentación dental (DD) en el sentido del gusto de ratas Wistar machos mediante el test de reactividad gustativa (TRG). Materiales y métodos : Estudio experimental, siguiendo las directrices de ARRIVE 2.0, realizado en diez ratas Wistar. Se las aleatorizó y asignó en un grupo control o en un grupo experimental, y se implantaron cánulas para el TRG en ambos grupos. En el grupo experimental se realizó exodoncias de los tres molares superiores del lado derecho. Al tercer día se inició el TRG (día 1) mediante la infusión de 1 M de una sustancia dulce (ingestiva) y 3 mM de una sustancia amarga (aversiva), a razón de 1 mL en 1 minuto. Este TRG se repitió los días 7, 14 y 21. Se puntuó las respuestas ingestivas y aversivas durante 1 minuto. Los datos fueron procesados en el paquete estadístico SPSS v. 26. Se usó la prueba U de Mann-Withney para identificar las diferencias; y la magnitud de la diferencia se calculó mediante la r de Rosenthal. Resultados : Se obtuvo respuestas ingestivas a sacarosa el día 1 (p > 0,05); en los otros días se obtuvo respuestas diferentes: día 7 (p = 0,05), día 14 (p = 0,009) y día 21 (p = 0,009). Asimismo, se obtuvo respuestas aversivas a benzoato de denatonio (BD) los días 1, 7 y 21 (p > 0,05); esto fue diferente el día 14 (p = 0,05). Conclusiones : Se encontró una diferencia en las medianas de las respuestas ingestivas a sacarosa y aversivas a BD en ratas Wistar machos a consecuencia de la DD.

ABSTRACT Objective : To evaluate the influence of dental deafferentation (DD) on the sense of taste in male Wistar rats using the taste reactivity test (TRG). Materials and methods : An experimental study was conducted on ten Wistar rats, following ARRIVE 2.0 guidelines. They were randomized and assigned to a control or experimental group, and both groups' cannulae for the TRG were implanted. In the experimental group, exodontia of the three upper molars on the right side was performed. On the third day, GRT was started (day 1) by infusing 1 M of a sweet substance (ingestive) and 3 mM of a bitter substance (aversive) at a rate of 1 mL in 1 minute. This TRG was repeated on days 7, 14, and 21. Ingestive and aversive responses were scored for 1 minute. The data were processed in the SPSS v. 26 statistical package. The Mann-Whitney U test was used to identify differences, and the magnitude of the difference was calculated using Rosenthal's r. Results : Ingestive responses to sucrose were obtained on day 1 (p > 0.05); different responses were obtained on the other days: day 7 (p = 0.05), day 14 (p = 0.009), and day 21 (p = 0.009). Likewise, aversive responses to denatonium benzoate (BD) were obtained on days 1, 7, and 21 (p > 0.05); this was different on day 14 (p = 0.05). Conclusions : We found a difference in median ingestive responses to sucrose and aversive responses to BD in male Wistar rats due to DD.

RESUMO Objetivo : Avaliar a influência da surdeferentação dentária (DD) no sentido do paladar de ratos Wistar machos através do teste de reatividade gustativa (TRG). Materiais e métodos : Estudo experimental, seguindo as diretrizes ARRIVE 2.0, realizado em dez ratos Wistar. Estes foram aleatorizados e atribuídos a um grupo de controlo ou a um grupo experimental, tendo sido implantadas cânulas para TRG em ambos os grupos. No grupo experimental, foi efetuada a exodontia dos três molares superiores do lado direito. No terceiro dia, iniciou-se a TRG (dia 1) com a infusão de 1 M de uma substância doce (ingestiva) e 3 mM de uma substância amarga (aversiva), na velocidade de 1 mL em 1 minuto. Esse TRG foi repetido nos dias 7, 14 e 21. As respostas ingestivas e aversivas foram avaliadas durante 1 minuto. Os dados foram processados no pacote estatístico SPSS v. 26. O teste U de Mann-Withney foi usado para identificar diferenças; e a magnitude da diferença foi calculada usando o r de Rosenthal. Resultados : As respostas ingestivas à sacarose foram obtidas no dia 1 (p > 0,05); foram obtidas respostas diferentes no dia 7 (p = 0,05), no dia 14 (p = 0,009) e no dia 21 (p = 0,009). Também se obtiveram respostas aversivas ao benzoato de denatónio (BD) nos dias 1, 7 e 21 (p > 0,05); estas foram diferentes no dia 14 (p = 0,05). Conclusões : Foi encontrada uma diferença nas respostas ingestivas medianas à sacarose e nas respostas aversivas ao BD em ratos Wistar machos como resultado da DD.

Exodontia de supranumerário paramolar e de primeiro molar com destruição coronária em região de maxila: relato de caso / Extraction of a supernumerary paramolar and first molar with coronary destruction in the maxilla area: case report

Os dentes supranumerários são descritos como uma espécie de anomalia dentária, determinada pela formação de dentes além daqueles pertencentes à dentição convencional, que geralmente promovem complicações na cavidade oral. Diversos fatores etiológicos podem estar relacionados e de acordo com sua localização, são classificados em mesiodens, distomolar e paramolar. O presente estudo tem como objetivo apresentar e descrever a exodontia de um elemento supranumerário paramolar em região de maxila, bem como a remoção cirúrgica do primeiro molar com destruição coronária em região subjacente, através de um relato de caso. Paciente E.M.J., sexo feminino, 38 anos de idade, ASA 1, procurou atendimento odontológico devido à queixa principal de dor em região do 1° molar superior esquerdo. Ao exame físico e radiográfico, foi observada grande destruição coronária do elemento 26 associado a uma fístula intraoral, além da presença de dente supranumerário paramolar na região vestibular do dente 26. O tratamento preconizado foi a remoção cirúrgica de ambos elementos e a paciente evoluiu sem intercorrências no pós-operatório. Desta maneira, pode-se concluir que a remoção cirúrgica de dente supranumerário paramolar e de unidade dentária com grande destruição coronária por lesão cariosa, mostrou-se uma alternativa segura e eficaz no presente caso.

Supernumerary teeth are described as a kind of dental anomaly, determined by the teeth´s formation other than those belonging to the conventional dentition, which generally promote complications in the oral cavity. Several etiological factors may be related and, according to their location, they are classified into mesiodens, distomolar and paramolar. This study aims to present and describe the extraction of a paramolar supernumerary element in the maxillary region, as well as the surgical removal of the first molar with coronary destruction in the underlying region, through a case report. Patient E.M.J., female, 38 years old, ASA 1, sought dental care due to the main complaint of pain in the region of the upper left 1st molar. At the clinical and radiographic examination, a great coronal destruction of element 26 associated with a intraoral fistula was observed, in addition to the presence of a supernumerary paramolar tooth on the buccal side of tooth 26. The recommended treatment was the surgical removal of both elements and the patient evolved uneventfully in the post-operative. Thus, it can be concluded that the surgical removal of a supernumerary paramolar tooth and a dental unit with great coronary destruction due to a carious lesion proved to be a safe and effective alternative in the present case.

Dents natales et néonatales, quelle prise en charge: revue systématique de littérature / Natal and neonatal teeth, which management: systematic literature review

Les dents « natales et néo natales ¼ sont des phénomènes rares mais assez bien documentées dans la littérature. Ces dents apparaissent avant l'âge de l'éruption dentaire et sont à l'origine de nombreuses complications. Leur prise en charge est donc une priorité absolue afin de maintenir un état buccal compatible avec les besoins physiologiques du nouveau-né. A cet égard, de nombreux traitements ont été décrits. Objectif : faire le point sur la prise en charge des dents natale et néo natale afin de mieux comprendre et exploiter les modalités thérapeutiques de ce phénomène décrit comme « rare ¼. Les dents natales et néo natales ont longtemps suscité de nombreuses interrogations quant à leurs étiologies, leurs diagnostics et leurs prises en charge. Que ce soit le médecin pédiatre ou le médecin dentiste, l'implication diagnostique et thérapeutique relève de l'unanimité et la collaboration actives entre les équipes médicales. Le traitement allant d'un simple polissage à l'extraction de la dent natale ou néo natale, il est judicieux d'instaurer une thérapeutique adaptée à la situation clinique tout en sensibilisant les parents de l'importance d'un suivi clinique et radiologique de l'état bucco-dentaire de l'enfant présentant cette anomalie particulièrement rare et pouvant être associée à un état pathologique d'ordre général.

"Natal and neonatal" teeth are rare phenomena but fairly well documented in the literature. These teeth appear before the age of dental eruption and are the cause of many complications. Their management is therefore an absolute priority in order to maintain an oral condition compatible with the physiological needs of the newborn. In this regard, many treatments have been described. Aim: to review the management of natal and neonatal teeth in order to better understand and achieve the best therapeutic modalities of this phenomenon described as "rare". Natal and neonatal teeth have long raised many questions about their etiologies, their diagnosis and their treatment. Whether it is the pediatrician or the dentist, the diagnosis and the treatment involvement is based on unanimity and active collaboration between the medical teams. The treatment, ranging from a simple polishing to the extraction of the natal or neonatal tooth, it is wise to establish a therapy adapted to the clinical situation while sensitizing the parents of the importance of a clinical and radiological follow-up of the oral condition of the child with this particularly rare anomaly and which may be associated with a general pathological condition

Optimization of ethanol extraction process for Yihuang powder by orthogonal experiment combined with AHP and GA-BP neural network / 中国药房

OBJECTIVE To optimize ethanol extraction process of Yihuang powder. METHODS An orthogonal experiment was designed by reflux extraction with ethanol volume fraction， liquid-to-material ratio， and extraction time as investigation factors. The parameters used were the contents of hesperidin， nobiletin， tangeretin， gallic acid， chebulagic acid， chebulinic acid， liquiritin， glycyrrhizin， eugenol， and the paste-forming rate. The analytic hierarchy process （AHP） was used to calculate the comprehensive score. The optimal ethanol extraction process parameters of Yihuang powder were determined by verifying the results predicted by orthogonal experiment and genetic algorithm （GA）-back propagation neural network （BP neural network）. RESULTS The optimal ethanol extraction process parameters， as optimized by orthogonal experiment， were as follows: ethanol volume fraction of 60%， liquid-solid ratio of 14∶1 （mL/g)， extraction time of 90 min， and extraction for 2 times. The comprehensive score obtained by verification was 79.19. Meanwhile， the optimal ethanol extraction process parameters， optimized by GA-BP neural network， were ethanol volume fraction of 65%， liquid-solid ratio of 14∶1 （mL/g )， extraction time of 60 min， and extraction for 2 times. The comprehensive score obtained by verification was 85.30， higher than the results obtained from orthogonal experiment. CONCLUSIONS The optimization method of orthogonal experiment combined with GA-BP neural network is superior to the traditional orthogonal experiment optimization method. The optimized ethanol extraction process of Yihuang powder is stable and reliable.

Evaluation of the treatment effect on sinus elevation and implant restoration in cases with odontogenic maxillary sinusitis after tooth extraction / 口腔疾病防治

Objective@#To investigate the clinical effects of sinus elevation surgery and implant restorationdue to insufficient bone massafter tooth extraction in patients with odontogenic maxillary sinusitis (OMS) and to provide a reference for use in clinical practice.@*Methods@#This study was reviewed and approved by the Ethics Committee, and informed consent was obtained from the patients. Forty-five teeth were extracted from patients with OMS in the maxillary posterior area (the study group). Sinus elevation and implantation were performed due to insufficient bone height in the implant area 6-8 months after tooth extraction in the study group. Forty-eight teeth were extracted from patients without "OMS" in the maxillary posterior area (the control group), and sinus elevation and implantation were performed due to insufficient bone height in the implant area 6-8 months after tooth extraction inthe control group. In the study group, 13 cases of discontinuous maxillary sinus floor bone and residual alveolar bone height of the maxillary sinus floor less than 4 mm were addressed with lateral wall sinus elevation, and the other 32 cases were addressed with crest-approach sinus elevation. In the control group, 8 cases of residual alveolar bone height less than 4 mm in the maxillary sinus floor were addressed with lateral wall sinus,and the other 40 cases were addressed with crest approach sinus elevation. Restorations were placed 6 to 8 months after surgery. The patients were followed up 21 days, 3 months, and 8 months after implantation and every 6 months after the placement of the restorations. The sinus bone gain (SBG), apical bone height (ABL) and marginal bone loss (MBL) were statistically analyzed 24 months after the restoration.@*Results@#The average preoperative mucosal thickness in the 45 patients in the study group was (1.556 ± 0.693) mm, which was significantly larger than that in the control group (1.229 ± 0.425) mm (P<0.001). There were no perforations in either group. Twenty-four months after restoration, there was no significant difference in the SBG, ABH or MBL between the two groups (P>0.05).@*Conclusion@#After the extraction of teeth from patients with OMS, the inflammation of the maxillary sinus decreased, and the bone height and density in the edentulous area were restored to a certain degree. The effects of sinus floor lifting surgery and implant restoration do not differ between patients with and without OMS.

Study on the Method of Causality Extraction from Chinese Medical Texts by Integrating Relational Label and Location Information / 医学信息学杂志

Purpose/Significance The relative positions of causality words are utilized to assist deep learning models to improve cau-sality prediction and mine medical text gain information.Method/Process The relative position information of causality words in medical texts is represented as a relational feature layer embedded in a pre-trained language model,and the baseline model is integrated for enti-ty recognition and relationship extraction.Result/Conclusion The F1 value of the model embedded in the relational feature layer is im-proved by 2.92 percentage points and 6.41 percentage points compared with the baseline models BERT-BiLSTM-CRF and CasRel,re-spectively,with better causal prediction capacity.

A Pre-trained Language Model-based Method for Adverse Drug Events Extraction / 医学信息学杂志

Purpose/Significance To study the extraction method of adverse drug event(ADE)data from medical texts,and to pro-vide support for clinical drug risk management and scientific decision-making.Method/Process Based on pre-trained model,by com-bining the correlation between the two subtasks of entity recognition and relation extraction,a entity relation joint extraction method for ADE monitoring is designed.Result/Conclusion Experiments on the published ADE extraction dataset show that the proposed method is superior to existing methods and can effectively extract ADE information and its relation from medical texts,providing a powerful means for the discovery and monitoring of ADE.

Simultaneous detection of 34 emerging contaminants in tap water by HPLC-MS/MS and health risk assessment / 中国法医学杂志

Objective To establish a simultaneous detection approach for 34 emerging contaminants(ECs)in tap water by liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).Human health risk assessment was performed according to the detection results from 43 tap water samples.Methods Tap water samples were concentrated and extracted by solid phase extraction,and then blown to near dry by nitrogen at 40℃.The sample extracts were dissolved in methanol-water solution(95:5,VN)to 0.5 mL for analyzing.Agilent Jet Stream Electrospray Ionization(AJS ESI)and the multiple reaction monitoring(MRM)mode were performed for MS to acquire the data of 34 ECs.A database including precursor ion,product ion and retention times was established accordingly.Results The average linear correlation coefficients(r)of 34 kinds of ECs was 0.995 9.The limits of detection were 0.01～0.60 ng/L and the recoveries were between 60.7％and 119.8％.The intra-group precisions were between 0.05％～9.89％and the intra-day precisions were between 0.20％～14.40％for the spiked samples.The method was applied to analyze 43 tap water samples and a total of 15 ECs were detected.According to the results,the detection rate of caffeine was the highest(84％),and the concentration range was ND～74.42 ng/L.Among all the ECs detected,1,2,3-benzotriazole had the highest concentration(ND～361.15 ng/L),where detection rate was 44％.Humans may be exposed to these ECs by drinking the tap water.The human health risk assessments of 12 kinds of ECs were carried out,however,the estimated risk was negligible(risk quotient＜0.01).Conclusion The method is simple,highly sensitive and selective,and could meet the detection needs of ECs at trace level in tap water.There was no human health risk posed for ECs identified in 43 tap water samples analyzed by this method.

The effect of silica in soil on the extraction of biological evidence DNA at the crime scene using the silica bead method / 中国法医学杂志

Objective To study the effect of silica in soil on the extraction of biological evidence DNA at the crime scene using the silica bead method.Methods Mud suspension and diluted blood were mixed to prepare biological samples mixed with dust and soil,which is to simulate biological evidence at the crime scene.Cell lysis was performed using heating lysis and guanidine salt chemical lysis,respectively.DNA was extracted using the silica bead method,amplified by PCR using Identifiler Plus kit and detected by capillary electrophoresis.The electrophoresis results were compared.Using mud suspension instead of silica beads to extract diluted blood DNA to validate the effect of silica in soil on the extraction of biological evidence DNA at crime scene using silica beads method.Results The complete STR loci were obtained after the extraction and amplification of 4 μL,20 μL dilute blood mixed with mud and lysed with heating cracking,whoes average peak heights arel 969.7±376.9 RFU and 9 706.7±349.8 RFU.For the 4 μL dilute blood mixed with mud guanidine salt chemical lysis,it cannot obtain complete STR loci after extraction and amplification.20 μL dilute blood mixed with mud guanidine salt was chemically cleaved and amplified to obtain complete STR loci with an average peak height of 1 899.8±801.3 RFU.After extraction and amplification by mud suspension instead of silica beads to extract 20 μL diluted blood DNA,complete STR loci were obtained.Conclusion Silicon dioxide in soil can bind to DNA in the presence of guanidine salts,leading to a decrease in the efficiency of recovering on-site biological evidence DNA using the silicon bead method.

Efficacy of two-staged laparoscopic Fowler-Stephens surgery through the Hay's triangle approach for the treat-ment of high cryptorchidism in children / 局解手术学杂志

Objective To analyze the efficacy of two-staged laparoscopic Fowler-Stephens surgery through the Hay's triangle approach for the treatment of high cryptorchidism in children.Methods The clinical data of 116 children with high cryptorchidism in our hospital were retrospectively analyzed,among which 43 children who underwent laparoscopic testicular extraction and fixation through the Hay's triangle approach were selected as the control group,and 73 children who underwent two-staged laparoscopic Fowler-Stephens surgery through the Hay's triangle approach were selected as the study group.The changes of sex hormone levels and testicular function before and after surgery were compared between the two groups.All patients were followed up for 6 months,and the testicular volume was reviewed and the occurrences of complications were recorded.Results There was no significant difference in the testicular volume before and after surgery between the two groups(P>0.05),and there was no significant difference in the total incidence of postoperative complications between the two groups(P>0.05).After surgery,the levels of serum follicle-stimulating hormone(FSH),estradiol(E2)and luteinizing hormone(LH)in the two groups were significantly lower than those before surgery(P<0.05),and the levels of serum testosterone(T),anti-Mullerian hormone(AMH),inhibin B(INHB)and INHB/FSH were significantly higher than those before surgery(P<0.05).However,there was no significant difference between the two groups(P>0.05).Conclusion The two-staged Fowler-Stephens surgery is effective in the treatment of high-risk cryptorchidism.It can establish a good collateral circulation by disconnection of spermatic cord vessels and gubernaculum testis,and the testis can be lowered to a satisfactory position in the scrotum.

Establishment and preliminary verification of a highly sensitive nucleic acid extraction method for OBI detection / 中国输血杂志

【Objective】 To establish and verify a new nucleic acid extraction method for OBI detection with large volume and high sensitivity, and apply it in the quantitative determination of OBI samples with low viral load. 【Methods】 The method for nucleic acid extraction with large volume was established based on the method of Roche nucleic acid detection kit. HBV standards were configured into 10 000 IU/mL, 1 000 IU/mL, 100 IU/mL, 10 IU/mL and 1 IU/mL respectively, and nucleic acid was extracted from the 10 mL standards by magnetic beads. CT values of each concentration were detected by fluorescence quantitative PCR and each concentration gradient was detected in parallel duplicates. The logarithm of virus concentration was taken as the X-axis and the average CT values of two tests were taken as the Y-axis to construct the fluorescence quantitative standard curve and regression equation. Three repeated experiments were conducted to verify the stability of the method. This method was used to extract nucleic acid from OBI samples with low viral load, and fluorescence quantification was performed. 【Results】 The amplification efficiency of fluorescence quantitative standard curves ranged from 90% to 105%, and the regression equation was greater than 0.99. The variation coefficients of variation of CT values were 0.63%, 0.78%, 1.52%, 1.36% and 0.78%, respectively. This method can extract nucleic acid from OBI samples with viral load of 1 IU/mL for quantification. 【Conclusion】 The detection limit of HBV nucleic acid quantitative detection system can reach 1 IU/mL, and it has strong stability and high sensitivity, which can be used for the quantitative detection of OBI with low viral load.

Establishment of high-throughput liquid chromatography tandem mass spectrometry method for determination of 53 per- and polyfluoroalkyl substances in serum / 环境与职业医学

Background Per- and polyfluoroalkyl substances (PFAS) are a class of persistent organic pollutants that possess potential toxicity to the human body. The production and utilization of diverse emerging PFAS have resulted in widespread human exposure. Therefore, it is imperative to establish a quantitative methodology encompassing a wide range of PFAS for a comprehensive assessment of human exposure to these compounds. Objective To establish a high-throughput quantitative method for the simultaneous determination of 53 PFAS in human serum based on ultra-high-performance liquid chromatography-Q Exactive high resolution mass spectrometry (UPLC-Q Exactive HRMS). Methods The extraction recoveries of hydrophilic-lipophilic balance (HLB) column, weak anionexchange (WAX) column, and 96-well WAX μElution plate were compared to select the SPE column with the highest recovery. The retention time and peak shape of the target compounds were compared between ACQUITY UPLC BEH C18 column and Accucore aQ column, and the more cost-effective column was chosen. The effects of adding different levels of ammonium formate (0, 2, 5 and 10 mmol·L−1) in mobile phase on peak shape and target response were compared to determine the optimal buffer salt concentration. The optimal spray voltage was obtained by comparing −2 kV and −4 kV. The proposed method was validated from the aspects of selectivity, standard curve, limits of detection, precision, accuracy, and matrix effect. The method was applied to 142 umbilical serum samples. Results The best recovery rate (64%-118%) was achieved by using 96-well WAX μElution plate. The optimal separation and peak shape were obtained by utilizing Accucore aQ column with H2O-methanol (containing 5 mmol·L−1 ammonium formate) as the mobile phase. Less in-source collision and better target response were observed when the spray voltage was set to −2 kV. All target analytes had a good linearity, with R2 > 0.99. The limits of detection ranged from 0.01 to 0.50 μg·L−1, and the recovery ranged from 69% to 127% with the precision less than 26%. A total of 31 PFAS were detected in the 142 actual samples, among which 14 PFAS had a detection frequency over 50%. Perfluorooctanoic acid showed the highest median concentration of 4.16 μg·L−1, followed by 6:2 chlorinated polyfluorinated ether sulfonate and perfluorooctane sulfonates (3.50 μg·L−1 and 1.59 μg·L−1, respectively). Conclusion In this study, we establish a UPLC-Q Excative HRMS method for simutanious determination of 53 PFAS concentrations in serum. This method has the advantages of wide coverage of PFAS, good selectivity, and easy operation, and is suitable for biological detection with a large sample size.

Extraction Process and Mechanism of Active Ingredients of Mori Folium for Lowering Blood Glucose： A Review / 中国实验方剂学杂志

Mori Folium， the dried leaves of Morus alba， is widely used in clinical practice for dispersing wind and heat， clearing the lung and moistening dryness， soothing the liver and improving vision， and cooling blood and stopping bleeding. It has been used to regulate blood glucose since ancient times， and modern studies have shown that the active components of Mori Folium for lowering blood glucose mainly include flavonoids， alkaloids， polysaccharides， and phenols. These components are mainly extracted by solvents such as water and alcohols with the assistance of ultrasound and microwave. In addition， new extraction methods are emerging， such as CO2 supercritical fluid extraction， enzymatic hydrolysis， and cloud point extraction. Mori Folium lowers blood glucose via multiple components， pathways， and targets. Specifically， it can improve glucose and lipid metabolism， protect pancreatic β cells， and alleviate insulin resistance to reduce the damage caused by hyperglycemia and restore normal physiological functions. Although a large number of studies have been carried out on diabetes， the causes and radical treatment methods remain to be explored， and diabetes is still a major disease that endangers human health and needs to be solved urgently. The articles about extraction process and mechanism of active components in Mori Folium for lowering blood glucose were retrieved from the China National Knowledge Infrastructure （CNKI）， Web of Science， and PubMed. We analyzed the applicable extraction methods for the blood glucose-lowering components such as flavonoids， polysaccharides， and alkaloids in Mori Folium， and compared the conventional and emerging methods. Furthermore， we summarized our research achievements in the extraction of active components from Mori Folium and the blood glucose-lowering effect and mechanisms. This review aims to provide theoretical support for the optimization of the extraction process， the research on the blood glucose-lowering components and mechanism， and the development of new drugs and clinical application of Mori Folium.

Research Progress in Extraction Technology， Structural Characteristics and Pharmacological Activities of Hippophae rhamnoides Polysaccharides / 中国实验方剂学杂志

Hippophae rhamnoides is a traditional Chinese medicine with homology of medicine and food， which has the effects of relieving cough and resolving phlegm， strengthening the stomach and digestion， and promoting blood circulation and resolving blood stasis. H. rhamnoides contains not only flavonoids， phenols， proteins， vitamins， and amino acids but also abundant polysaccharides. In order to explore the functional value and current research status of H. rhamnoides polysaccharides， this study systematically summarized the extraction process， structural characteristics， pharmacological effects， and mechanism of action of H. rhamnoides polysaccharides by reviewing Chinese and foreign literature. The results showed that H. rhamnoides polysaccharides have anti-tumor， hypoglycemic， antioxidant， immune regulation， anti-inflammatory， and anti-hyperlipidemia functions and could improve intestinal microbiota. There were various extraction processes for polysaccharides， including hot water extraction， microwave extraction， ultrasonic extraction， enzymatic extraction， flash extraction， ultrasonic-microwave synergistic extraction， emerald hot water extraction， enzymatic-ultrasonic synergistic extraction， etc. Based on comprehensive analysis， hot water extraction is suitable for industrial development and application. However， multiple homogeneous polysaccharides have been isolated and purified from H. rhamnoides polysaccharides， but their efficacy， structure， and structure-activity relationship still need to be further explored and studied. This study can provide a reference for the research and development of H. rhamnoides polysaccharides.

Separation and Enrichment of β-Agonists from Animal Livers Based on Magnetic Solid-Phase Extraction with Automated-treatment Device / 分析化学

A liquid chromatography-tandem mass spectrometry(LC-MS/MS)method was developed for determination of three kinds of β-agonists(Clenbuterol(CL),Ractopamine(RAC)and Salbutamol(SAL))residues in animal liver samples.The liver sample homogenates were extracted with organic solvent,followed by clean-up using the automatic magnetic solid-phase extraction(MSPE),and then analyzed using LC-MS/MS.The results showed that the magnetic mixed-mode cation exchange adsorbent(M-MCX)exhibited 34%higher adsorption capacity than the conventional mixed-mode cation exchange(MCX)column.Furthermore,the clean-up was conducted by using an automatic MSPE device,and 8 samples could be simultaneously treated within 30 min.The limits of detection(LOD)were 0.01-0.1 μg/kg,the average recoveries ranged from 88.2%to 110.5%,and the relative standard deviations(RSDs)were in range of 2.9%-10.3%at three spiked levels for the three kinds of β-agonists.Compared with the traditional SPE technique,the present method had many advantages such as simple operation,rapidity and high efficiency,which was suitable for high-throughput and automatic detection of residues in routine analysis.