RESUMEN
Objective: To explore the reentry rate of reactive blood donors in the bloodborne pathogen infection screening in Hangzhou City, and analyze the donation behavior of those who successfully returned. Methods: A retrospective analysis of the return data of blood donors with reactive bloodborne pathogen screening markers was conducted at Zhejiang Provincial Blood Center from June 2017 to May 2022. The reentry process for blood donors with reactive bloodborne pathogen screening markers in Hangzhou City is as follows: after the initial screening period of 6 months, donors can voluntarily apply for return to the blood center. Samples are collected and subjected to routine enzyme-linked immunosorbent assay (ELISA) screening for HBsAg, anti-HCV, HIV Ab/Ag, and anti-TP, as well as a single nucleic acid (HIV/HCV/HBV) test. For samples that show non-reactivity in both ELISA and nucleic acid tests, serum biomarker testing for the reasons of exclusion is performed using chemiluminescence immunoassay (CLIA), and those with non-reactivity are allowed to return. Results: A total of 4 583 reactive blood donors who met the criteria for re-entry applied for reentry, out of which 475 applications were received from donors in the Hangzhou area. Among these, 279 donors were successfully readmitted, resulting in a success rate of 58.74% (279/475). By the end of December 2021, out of the 174 donors who successfully returned, 114 donors chose to donate again. They collectively donated 39 530 ml of whole blood and 1 147.2 therapeutic doses of platelets. Among these, 21 donors once again showed reactivity for pathogen infection biomarkers, accounting for 18.42% (21/114). Conclusion: The reentry strategy has somewhat mitigated the attrition of blood donors. Nevertheless, there are instances where donors who were successfully readmitted show reactivity once more in the screening for pathogen infection biomarkers.
Asunto(s)
Infecciones por VIH , Ácidos Nucleicos , Humanos , Donantes de Sangre , Patógenos Transmitidos por la Sangre , Estudios Retrospectivos , Tamizaje Masivo/métodos , Biomarcadores , Virus de la Hepatitis BRESUMEN
HLA-A*02:625 differs from HLA-A*02:06:01:01 by a single nucleotide substitution at position 806 C>T.
RESUMEN
A novel allelic variant in HLA-B*40 lineage, HLA-B*40:298:02, has been identified in an individual of Han ethnicity afflicted with nasopharyngeal carcinoma in Hunan province, southern China. Following polymerase chain reaction-Sanger sequence-based typing (PCR-SBT), this new variant was further confirmed by two distinct strategies of cloning and sequencing. HLA-B*40:298:02 differs from HLA-B*40:298:01 by a single synonymous cytosine substitution at nucleotide position 26 (TâC) in exon 3, which corresponds to codon 99 of the mature HLA-B mRNA molecule. This new allele has an estimated frequency of 0.0002, in about 2,500 sequence-based typed subjects from the same population.
Asunto(s)
Alelos , Variación Genética , Antígenos HLA-B/genética , Secuencia de Aminoácidos , Clonación Molecular , Codón , Exones , Antígenos HLA-B/química , Humanos , Masculino , Persona de Mediana Edad , Análisis de Secuencia de ADNRESUMEN
HLA-DQB1*06:209 has one nucleotide change from HLA-DQB1*06:01:01 at position 260 G>C in exon 2.
Asunto(s)
Pueblo Asiatico , Médula Ósea/fisiología , Genotipo , Cadenas beta de HLA-DQ/genética , Alelos , Trasplante de Médula Ósea , China , Prueba de Histocompatibilidad , Humanos , Polimorfismo Genético , Alineación de Secuencia , Análisis de Secuencia de ADN , Donantes de Tejidos , Organización Mundial de la SaludRESUMEN
HLA-B*40:333 differs from HLA-B*40:01:01 by a single nucleotide substitution at position 380 T>C.
Asunto(s)
Alelos , Antígenos HLA-B/genética , Prueba de Histocompatibilidad/métodos , Reacción en Cadena de la Polimerasa/métodos , Secuencia de Bases , Exones/genética , Sitios Genéticos , Humanos , Alineación de SecuenciaRESUMEN
HLA-B*40:338N differs from HLA-B*40:01:01 by a single nucleotide substitution at position 843C>A.
Asunto(s)
Alelos , Pueblo Asiatico/genética , Antígenos HLA-B/genética , Leucemia/genética , Secuencia de Bases , Exones/genética , Humanos , Alineación de SecuenciaRESUMEN
HLA-B*27:04:06 differs from HLA-B*27:04:01 by a single-nucleotide substitution at position 396 C > A.
Asunto(s)
Alelos , Pueblo Asiatico/genética , Médula Ósea/metabolismo , Antígenos HLA-B/genética , Donantes de Tejidos , Secuencia de Bases , Exones/genética , HumanosRESUMEN
HLA-DQB1*03:181 has one nucleotide change from HLA-DQB1*03:05:01 at position 470C>G.
Asunto(s)
Alelos , Pueblo Asiatico/genética , Cadenas beta de HLA-DQ/genética , Leucemia/genética , Secuencia de Bases , Exones/genética , HumanosRESUMEN
HLA-B*13:98 differs from HLA-B*13:02:01 by a single nucleotide substitution at position 193 A>G.
Asunto(s)
Alelos , Pueblo Asiatico/genética , Antígenos HLA-B/genética , Secuencia de Bases , Exones/genética , HumanosRESUMEN
A novel HLA-B*39:01:01-related variant, HLA-B*39:130, has been identified in a normal individual of Han ethnicity in Hunan province, southern China. Following Sanger polymerase chain reaction-sequence-based typing (PCR-SBT), this new allele was further confirmed by cloning, phasing and sequencing. Aligned with HLA-B*39:01:01, HLA-B*39:130 has a nonsynonymous thymine substitution at nucleotide position 94 in exon 4, resulting in amino acid change from threonine to isoleucine at codon 214 (ACAâATA) of the mature HLA-BmRNA molecule.
Asunto(s)
Alelos , Antígenos HLA-B/genética , Adulto , Secuencia de Bases , Clonación Molecular , Humanos , MasculinoRESUMEN
HLA-B*40:01:41 differs from HLA-B*40:01:01 by a single nucleotide substitution at position 195 G>A.
Asunto(s)
Alelos , Técnicas de Genotipaje , Antígeno HLA-B40/genética , Reacción en Cadena de la Polimerasa , Pueblo Asiatico , Donantes de Sangre , Sangre Fetal , HumanosRESUMEN
A new MICA allelic variant, MICA*007:07, was identified in an individual of Mongol ethnicity in the Inner Mongolia Autonomous Region, northern China. Following polymerase chain reaction-sequence-based typing (PCR-SBT), this new allele was further confirmed by cloning and sequencing. MICA*007:07 differs from MICA*007:01 by a synonymous mutation from G to A at the 2nd nucleotide position in exon 2. MICA*007:07 was linked to HLA-B*27:05.
Asunto(s)
Secuencia de Bases/genética , Antígenos HLA-B/genética , Antígenos de Histocompatibilidad Clase I/genética , Clonación Molecular , Exones , Femenino , Antígenos HLA-B/inmunología , Antígenos de Histocompatibilidad Clase I/inmunología , Humanos , Desequilibrio de LigamientoRESUMEN
HLA-DRB1*15:127 has 1 nucleotide change from HLA-DRB1*15:01:01:01 at position 308 C>G.
Asunto(s)
Alelos , Médula Ósea , Técnicas de Genotipaje , Cadenas HLA-DRB1/genética , Reacción en Cadena de la Polimerasa , Donantes de Tejidos , China , HumanosRESUMEN
HLA-B*27:147 differs from HLA-B*27:04:01 by a single nucleotide substitution at position 523 C>G.
Asunto(s)
Alelos , Técnicas de Genotipaje/métodos , Antígeno HLA-B27/genética , Reacción en Cadena de la Polimerasa/métodos , HumanosRESUMEN
HLA-B*52:01:27 differs from HLA-B*52:01:01 by a single nucleotide substitution at position 681 C>T.
Asunto(s)
Alelos , Exones , Antígeno HLA-B52/genética , Polimorfismo de Nucleótido Simple , Pueblo Asiatico , Secuencia de Bases , Codón/química , Expresión Génica , Genotipo , Antígeno HLA-B52/inmunología , Trasplante de Células Madre Hematopoyéticas , Prueba de Histocompatibilidad , Humanos , Reacción en Cadena de la Polimerasa , Alineación de Secuencia , Análisis de Secuencia de ADN , Donantes de TejidosRESUMEN
HLA-B*55:02:09 and HLA-B*55:80 differ from HLA-B*55:02:01 by 1 single nucleotide substitution, respectively.
Asunto(s)
Alelos , Exones , Antígenos HLA-B/genética , Polimorfismo de Nucleótido Simple , Donantes de Tejidos , Sustitución de Aminoácidos , Pueblo Asiatico , Secuencia de Bases , Trasplante de Médula Ósea , Codón/química , Expresión Génica , Genotipo , Antígenos HLA-B/inmunología , Prueba de Histocompatibilidad , Humanos , Reacción en Cadena de la Polimerasa , Isoformas de Proteínas/genética , Isoformas de Proteínas/inmunología , Alineación de Secuencia , Análisis de Secuencia de ADNRESUMEN
HLA-B*13:83 differs from HLA-B*13:01:01 by 2 nucleotide substitutions at positions 103 and 106.
Asunto(s)
Alelos , Donantes de Sangre , Exones , Antígeno HLA-B13/genética , Polimorfismo de Nucleótido Simple , Sustitución de Aminoácidos , Pueblo Asiatico , Secuencia de Bases , Codón/química , Trasplante de Células Madre de Sangre del Cordón Umbilical , Expresión Génica , Genotipo , Antígeno HLA-B13/inmunología , Prueba de Histocompatibilidad , Humanos , Reacción en Cadena de la Polimerasa , Alineación de Secuencia , Análisis de Secuencia de ADNRESUMEN
HLA-C*08:128 shows a substitution C to T at position 704 when compared to HLA-C*08:01:01.
Asunto(s)
Alelos , Exones , Antígenos HLA-C/genética , Polimorfismo de Nucleótido Simple , Receptores de Trasplantes , Sustitución de Aminoácidos , Pueblo Asiatico , Secuencia de Bases , Codón/química , Expresión Génica , Genotipo , Antígenos HLA-C/inmunología , Trasplante de Células Madre Hematopoyéticas , Prueba de Histocompatibilidad , Humanos , Leucemia/genética , Leucemia/inmunología , Leucemia/patología , Leucemia/terapia , Reacción en Cadena de la Polimerasa , Alineación de Secuencia , Análisis de Secuencia de ADNRESUMEN
HLA-C*01:109N differs from HLA-C*01:02:01 by a single nucleotide substitution at position 683 G > A.
Asunto(s)
Alelos , Codón sin Sentido , Exones , Antígenos HLA-C/genética , Leucemia/genética , Receptores de Trasplantes , Pueblo Asiatico , Secuencia de Bases , Trasplante de Médula Ósea , Clonación Molecular , Expresión Génica , Genotipo , Antígenos HLA-C/inmunología , Prueba de Histocompatibilidad , Humanos , Leucemia/inmunología , Leucemia/patología , Leucemia/terapia , Reacción en Cadena de la Polimerasa , Alineación de Secuencia , Análisis de Secuencia de ADNRESUMEN
For nutrition practitioners and researchers, assessing dietary intake of children and adults with a high level of accuracy continues to be a challenge. Developments in mobile technologies have created a role for images in the assessment of dietary intake. The objective of this review was to examine peer-reviewed published papers covering development, evaluation and/or validation of image-assisted or image-based dietary assessment methods from December 2013 to January 2016. Images taken with handheld devices or wearable cameras have been used to assist traditional dietary assessment methods for portion size estimations made by dietitians (image-assisted methods). Image-assisted approaches can supplement either dietary records or 24-h dietary recalls. In recent years, image-based approaches integrating application technology for mobile devices have been developed (image-based methods). Image-based approaches aim at capturing all eating occasions by images as the primary record of dietary intake, and therefore follow the methodology of food records. The present paper reviews several image-assisted and image-based methods, their benefits and challenges; followed by details on an image-based mobile food record. Mobile technology offers a wide range of feasible options for dietary assessment, which are easier to incorporate into daily routines. The presented studies illustrate that image-assisted methods can improve the accuracy of conventional dietary assessment methods by adding eating occasion detail via pictures captured by an individual (dynamic images). All of the studies reduced underreporting with the help of images compared with results with traditional assessment methods. Studies with larger sample sizes are needed to better delineate attributes with regards to age of user, degree of error and cost.
