scholarly journals DETECTION OF SARS-COV-2 FROM SURFACE OF PATIENTS’ LEFTOVER FOOD PACKAGES AT A COVID-19 QUARANTINE CENTRE

2021 ◽  
Vol 21 (3) ◽  
pp. 217-221
Author(s):  
Nadia Mohamad ◽  
Yuvaneswary Veloo ◽  
Muhammad Alfatih Pahrol ◽  
Jeyanthi Suppiah ◽  
Rafiza Shaharudin ◽  
...  
Keyword(s):  
Food Waste ◽  
Chain Reaction ◽  
Healthcare Facilities ◽  
Viral Culture ◽  
Viral Transport ◽  
Asymptomatic Patients ◽  
Food Packages ◽  
Two Samples ◽  
Risk Of Exposure ◽  
Polymerase Chain

In healthcare facilities, food waste and its packaging are mostly managed as non-infectious general waste. However, waste from SARS-CoV-2 positive patients, are treated as medical waste as they may be contaminated by the virus. We investigated the possibility of SARS-CoV-2 contamination from positive COVID-19 patients to their leftover food packages at a quarantine centre. Food packages surface was swabbed using prewetted cellular foam, placed into viral transport media and analysed using real time reverse transcription polymerase chain reaction. SARS-CoV-2 RNA was detected in two samples (4.5%) from asymptomatic patients who were at day-2 positive SARS-CoV-2 with cycle threshold (Ct) value (RdRp/E), 34.96/35.72 and 37.1/36.48 respectively. Detection of SARS-CoV-2 supports that there is contamination to the waste. These poses risk of exposure as SAR-COV-2 survive on the surfaces, thus, safe handling and disposal of food waste should be maintained. However, further study involving viral culture should be explored to determine the viability of the SARS-CoV-2 from leftover food packages

scholarly journals Placental Cytomegalovirus Infection

2018 ◽  
Vol 143 (5) ◽  
pp. 639-642 ◽  
Author(s):  
Kaleigh Lindholm ◽  
Mary O'Keefe
Keyword(s):  
The United States ◽  
Late Sequelae ◽  
Chain Reaction ◽  
Fetal Demise ◽  
Live Births ◽  
Delayed Onset ◽  
Viral Culture ◽  
Intracytoplasmic Inclusions ◽  
The Common ◽  
Polymerase Chain

In the United States, cytomegalovirus is the most common congenital viral infection and the number 1 cause of nonhereditary sensorineural hearing loss. The vast majority of infants may be asymptomatic, especially if cytomegalovirus is contracted later in the pregnancy, and some symptoms may have a delayed onset. Therefore, it is important for the pathologist to identify the common histologic findings to help confirm the diagnosis so the child can be followed for late sequelae. Histologic examination of the placenta is important in live births and in cases of intrauterine fetal demise. Chronic lymphoplasmacytic villitis and fibrotic, avascular villi are the most common findings. When present, Cowdry A intranuclear and basophilic intracytoplasmic inclusions are characteristic. Immunohistochemistry for cytomegalovirus can highlight these inclusions as well as the associated eosinophilic debris. In addition, polymerase chain reaction or viral culture on placental or fetal samples can be performed for confirmation.

scholarly journals Potentially a new subtype of the cytoplasmic male sterility S- type in maize

Genetika ◽  
2013 ◽  
Vol 45 (1) ◽  
pp. 145-151
Author(s):  
Jelena Vancetovic ◽  
Dragana Ignjatovic-Micic ◽  
Ana Nikolic ◽  
Sofija Bozinovic ◽  
Ksenija Markovic ◽  
...  
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Multiplex Polymerase Chain Reaction ◽  
Laboratory Experiments ◽  
Gene Bank ◽  
Chain Reaction ◽  
Additional Band ◽  
Two Samples ◽  
Polymerase Chain ◽  
Maize Research Institute

In gene-bank maize collection of Maize Research Institute Zemun Polje (MRI) two samples with untypical mtDNA profile for cytoplasmic male sterility (cms) were identified. These two samples showed typical multiplex polymerase chain reaction (PCR) band for cms-S, but also an additional band of unknown nature. It is assumed that the additional band is the result of a rearrangement of the two mitochondrial episomes characteristic for the cms-S in maize or a duplication of the part of cms-S mitochondrial genome. Additional field and laboratory experiments are necessary in the further lightening of this phenomenon.

scholarly journals Occurrence of zoonotic Enterocytozoon bieneusi in cats in Brazil

2019 ◽  
Vol 28 (1) ◽  
pp. 80-90 ◽  
Author(s):  
Jamille Batista Faria Prado ◽  
Carlos Alberto do Nascimento Ramos ◽  
Vagner Ricardo da Silva Fiuza ◽  
Veronica Jorge Babo Terra
Keyword(s):  
Enterocytozoon Bieneusi ◽  
Domestic Cat ◽  
Domestic Cats ◽  
Chain Reaction ◽  
Mato Grosso ◽  
Source Of Infection ◽  
Two Samples ◽  
Intestinal Pathogen ◽  
Polymerase Chain ◽  
Mato Grosso Do Sul

Abstract Enterocytozoon bieneusi is an opportunistic intestinal pathogen that infects humans and a wide variety of animals worldwide. Our aim in this study was to investigate the occurrence of E. bieneusi in a domestic cat population in Campo Grande, Mato Grosso do Sul, Brazil. Sixty fecal samples from diarrheic cats were subjected to polymerase chain reaction (PCR) and the amplicons were sequenced for identification. E. bieneusi was detected in two samples (3.3%), both identified as genotype D. This genotype has already been reported in animals and humans and is considered a zoonotic genotype. Our findings represent the first report of E. bieneusi in domestic cats in Brazil, reinforcing the importance of identifying this agent as a source of infection in animals and humans.

scholarly journals Presence of Arcobacter species in pet cats and dogs in the Czech Republic

2017 ◽  
Vol 61 (No. 8) ◽  
pp. 449-455
Author(s):  
M. Pejchalova ◽  
S. Zabcikova ◽  
L. Silhova ◽  
D. Silha ◽  
I. Brozkova ◽  
...  
Keyword(s):  
Czech Republic ◽  
Gel Electrophoresis ◽  
Dna Isolation ◽  
Human Infection ◽  
Chain Reaction ◽  
The Czech Republic ◽  
Two Samples ◽  
Arcobacter Butzleri ◽  
Polymerase Chain

This study was conducted to evaluate the occurrence of the genus Arcobacter in cats and dogs in the Czech Republic. These animals may be carriers of the bacteria and potential sources of human infection. Oral smears were collected from animals using smear swabs and brushes. Based on previous studies, commercially available DNA kits were used for DNA isolation. Samples were analysed using polymerase chain reaction (PCR) and evaluated using gel electrophoresis. Overall, 178 oral smears were tested, of which 108 were from dogs and 70 were from cats. Out of all smears, five were positive, of which four samples were from dogs and one from a cat. In all five positive cases, PCR confirmed the presence of Arcobacter butzleri. In follow-up sampling, the presence of Arcobacter butzleri was demonstrated in two samples from a dog.

scholarly journals PCR detection of Bartonella spp. in the dog

2014 ◽  
Vol 83 (2) ◽  
pp. 79-82 ◽  
Author(s):  
Jarmila Konvalinová ◽  
Vlasta Svobodová ◽  
Dobromila Molinková ◽  
Miroslav Svoboda
Keyword(s):  
Polymerase Chain Reaction ◽  
Czech Republic ◽  
Clinical Symptoms ◽  
Bartonella Henselae ◽  
Chain Reaction ◽  
The Czech Republic ◽  
Two Samples ◽  
Healthy Dogs ◽  
Polymerase Chain ◽  
First Time

Our study aimed at using PCR to identify the incidence ofBartonellaspp. in blood of dogs. Altogether 286 dogs of 92 breeds aged 3 month to 17 years were tested from October 2008 to December 2009. Healthy dogs as well as dogs with various clinical symptoms of disease were included in the group. Samples were tested by polymerase chain reaction (PCR) specific for the presence ofBartonellaspp. Following the DNA examination in 286 dogs by PCR and subsequent sequencing, two samples were identified asBartonella henselae(0.7%). Other species ofBartonellawere not found. It was the first time in the Czech Republic when incidence ofBartonellaspp. was determined in dogs.

Verification of clinical samples, positive in AMPLICOR Neisseria gonorrhoeae polymerase chain reaction, by 16S rRNA and gyrA compared with culture

2005 ◽  
Vol 16 (6) ◽  
pp. 415-419 ◽  
Author(s):  
Åsa Airell ◽  
Emma Lindbäck ◽  
Ferda Ataker ◽  
Kirsti Jalakas Pörnull ◽  
Bengt Wretlind
Keyword(s):  
Polymerase Chain Reaction ◽  
16S Rrna ◽  
Neisseria Gonorrhoeae ◽  
False Negative ◽  
Clinical Samples ◽  
Rrna Gene ◽  
Chain Reaction ◽  
Gyra Gene ◽  
Two Samples ◽  
Polymerase Chain

We compared 956 samples for AMPLICOR Neisseria gonorrhoeae polymerase chain reaction (PCR) (Roche) with species verification using the 16S rRNA gene to verification using gyrA gene. Control was the culture method. The gyrA verification uses pyrosequencing of the quinolone resistance-determining region of gyrA. Of 52 samples with optical density ≥0.2 in PCR, 27 were negative in culture, two samples from pharynx were false negative in culture and four samples from pharynx were false positives in verification with 16S rRNA. Twenty-five samples showed growth of gonococci, 18 of the corresponding PCR samples were verified by both methods; three urine samples were positive only in gyrA ; and one pharynx specimen was positive only in 16S rRNA. Three samples were lost. We conclude that AMPLICOR N. gonorrhoeae PCR with verification in gyrA gene can be considered as a diagnostic tool in populations with low prevalence of gonorrhoea and that pharynx specimens should not be analysed by PCR.

scholarly journals Genotypical characterization of thermotolerant coliforms isolated from food produced by a Solidarity Economic Venture of Bahia (Brazil)

2020 ◽  
Author(s):  
J. N. Silva ◽  
M. D. Baliza ◽  
F. Freitas ◽  
E. S Cruz ◽  
V. M. A. Camilo ◽  
...  
Keyword(s):  
Virulence Genes ◽  
Food Contamination ◽  
Microbiological Analysis ◽  
Chain Reaction ◽  
E Coli ◽  
Family Farmers ◽  
Two Samples ◽  
Thermotolerant Coliforms ◽  
Polymerase Chain

Abstract Many Solidarity Economic Venture (SEV) are family farmers who seek to add value to production through artisanal processing, which can lead to food contamination. Thus, this study aimed to genotypically characterize thermotolerant coliforms (TtC) strains from food produced by local agribusinesses of SEV during January to April 2019. Samples from thirteen production units (PU) from the SEV were submitted to a microbiological analysis of thermotolerant coliforms (AFNOR 3M1/2 – 09/89), using a fast count method in Petrifilm™ dishes. The Polymerase Chain Reaction (PCR) technique was used to verify the following virulence genes (VGs) associated with Escherichia coli: stx, typical from enterohemorrhagic E. coli (EHEC); bfpA typical from entheropathogenic E. coli (EPEC) and elt and slt, typical from entherotoxigenic E. coli (ETEC). The results showed that two samples of queijadinha (typical Brazilian candy made with eggs and coconut) and one sample of cassava cake presented characteristic colonies TtC. This way, three strains were isolated in order to perform the PCR technique. However, the genes used in the reaction were not detected in the isolated strains. Therefore, it is suggested that the isolated strains are from E. coli pathotypes with different virulence genes than the ones analyzed belong other types of TtC, such as Enterobacter and Klebsiella. Although the virulence of genes has not been confirmed, the presence of TtC on food indicates hygiene flaws during production and, therefore, measurements to control and prevent contamination should be taken.

scholarly journals Kultur Jaringan Jeruk Keprok Tejakula (Citrus reticulata var. Tejakula) Menggunakan Tunas Muda dan Biji Serta Deteksi CVPD dengan Teknik Polymerase Chain Reaction (PCR)

2020 ◽  
Vol 10 (1) ◽  
pp. 49
Author(s):  
VLORA VERONICA SIPANGKAR ◽  
I NYOMAN WIJAYA ◽  
MADE SRITAMIN
Keyword(s):  
Polymerase Chain Reaction ◽  
Tissue Culture ◽  
Pcr Analysis ◽  
Citrus Reticulata ◽  
Chain Reaction ◽  
Citrus Plant ◽  
Two Samples ◽  
Liberibacter Asiaticus ◽  
Polymerase Chain

 Tissue Culture Citrus (Citrus reticulata var. Tejakula) using Shoot and Seed and the Detection of CVPD with Polymerase Chain Reaction (PCR). The sample was taken in Pecatu Village, Kuta Selatan District, Badung Regency and continued with in vitro culture and PCR analysis at UPT. Genetic Resource and Molecular Biology Laboratory, was start from  December of 2018 until May of  2019. The purpose of this research was to create a CVPD free Citrus reticulata var. Tejakula seedling from tissue culture. The sample was chosen based on visual characteristic. Two samples were taken from  citrus  plant  that  show  CVPD  symptoms  and  citrus  plant  that  did  not  show  CVPD symptoms. The seed  and shoot  were cultured using MS media for 12  week after planting (WAP). From this research showed that both explant from the shoot and seed were able to grow well.  The  explant  from  citrus  sample  that  showed  CVPD  symptoms  was  infected  by Liberibacter asiaticus and the explants from citrus that did not show CVPD symptoms was not invected by Liberibacter asiaticus, according to PCR analysis.

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