Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 2 de 2
Filter
Add filters








Type of study
Year range
1.
Acta bioquím. clín. latinoam ; 52(2): 205-211, jun. 2018. ilus, tab
Article in Spanish | LILACS | ID: biblio-949334

ABSTRACT

La reacción en cadena de la polimerasa (PCR) es la técnica más importante en Biología Molecular. Su principal deficiencia es la susceptibilidad a la contaminación de la muestra, ya sea con productos de amplificación generados en reacciones previas o con material genético proveniente de otras muestras. Se entiende por contaminación a la presencia indeseada de moléculas de ADN o ARN, que pueden actuar como templados en reacciones de amplificación. El objetivo del trabajo fue demostrar la importancia de la implementación de un control de contaminación ambiental periódico monitoreando la integridad del circuito de PCR. Para ello, se hisoparon puntos correspondientes a diferentes áreas de trabajo y se investigó la presencia de amplicones mediante PCR Real Time en Lighcycler 2.0, Roche® y Ampliprep Cobas s201, Roche®. En puntos críticos del circuito (flujo laminar o la cabina de seguridad del área de pre-PCR) no se detectaron amplicones, aunque sí se hallaron en las mesadas y heladeras. En el resto del circuito, la distribución de los amplicones fue variable. De esta forma se demuestra la importancia de la realización de un control de contaminación ambiental periódico en laboratorios que realizan la técnica de PCR, pudiendo detectar contaminación de forma precoz y tomar acciones correctivas a tiempo.


Polymerase chain reaction (PCR) is the most important technique in Molecular Biology. Its main deficiency is susceptibility to contamination of the sample, either with amplification products generated in previous reactions or with genetic material from other samples. Contamination is understood as the undesired presence of DNA or RNA molecules, which may act as annealing in amplification reactions. The objective of this work is to demonstrate the importance of implementing a periodic environmental pollution control by monitoring the integrity of the PCR. To do this, different areas of work were swabbed and the presence of amplicons were investigated by Real Time PCR in Lighcycler 2.0, Roche® and Ampliprep Cobas s201, Roche®. At critical points in the circuit (laminar flow or pre-PCR area booth) no amplicons were detected, although they were found in countertops and refrigerators. In the rest of the circuit, the distribution of the amplicons was variable. Thus, the importance of conducting a periodic environmental contamination control in laboratories that perform the PCR technique is demonstrated, enabling early detection contamination and corrective actions being taken on time.


A reação em cadeia da polimerase (PCR) é a técnica mais importante em Biologia Molecular. Sua principal deficiência é a suscetibilidade à contaminação da amostra, seja com produtos de amplificação gerados em reações prévias ou com material genético em reações prévias ou com material genético proveniente de outras amostras. Entende-se por contaminação a presença não desejada de moléculas de DNA ou ARN, que podem agir como temperados em reações de amplificação. O objetivo do trabalho foi demonstrar a importância da implementação de um controle de contaminação ambiental periódico monitorando a integridade do circuito de PCR. Para isso, se fez esfregaço de pontos correspondentes a diferentes áreas de trabalho e foi investigada a presença de amplicons mediante PCR Real Time em Lighcycler 2.0, Roche® e Ampliprep Cobas s201, Roche®. Em pontos críticos do circuito (fluxo laminar ou a cabine de segurança da área de pré-PCR), não foram detectados amplicons, apesar de serem encontrados nas bancadas e refrigeradores. No resto do circuito, a distribuição dos amplicons foi variável. Assim mostra a importância da realização de um controle de contaminação ambiental periódico em laboratórios que realizam a técnica de PCR, podendo detectar a contaminação de forma precoce e tomar ações corretivas a tempo.


Subject(s)
Total Quality Management , DNA-Directed DNA Polymerase , Environmental Pollution , Molecular Biology , Laminar Flow , Equipment and Supplies , Products Distribution , Laboratories
2.
Chinese Journal of Immunology ; (12): 112-116, 2018.
Article in Chinese | WPRIM | ID: wpr-702684

ABSTRACT

Molecular biology laboratory inspect curriculum is one of the core courses in medical laboratory major,and it is also practical Since the contents of the curriculum are dull and dry,and students admitted in the medical laboratory major in higher vocational colleges are composed of both arts students and science students,with relatively weak foundation on biology,so they generally feel difficult in learning of molecular biology courses,and thus with learning weariness.Therefore,in the molecular biology teaching in our college,we should take the task of molecular biology examination as the guide,leading to strengthen the training skills,with three modules of basic curriculum design for the integration of molecular biology theoretical knowledge into the training of skill knowledge,basic skills,and technology application,to construct the curriculum system of " serial architecture".Some of the experiments are designed by students themselves while several teaching and evaluation methods are innovated The results show that through the curriculum reform and practice,it can effectively stimulate students' learning interest and cultivate the students' innovation ability and practical ability,with obvious teaching effect.

SELECTION OF CITATIONS
SEARCH DETAIL