1
|
Peng YJ, Li YH, Du C, Guo YS, Song JT, Jia CY, Zhang X, Liu MJ, Wang ZM, Liu B, Yan SL, Yang YX, Tang XL, Lin GX, Li XY, Zhang Y, Yuan JH, Xu SK, Chen CD, Lu JH, Zou X, Wan CS, Hu QH. [The cases of tracing the source of patients infected with Omicron variant of SARS-CoV-2 based on wastewater-based epidemiology in Shenzhen]. Zhonghua Yi Xue Za Zhi 2024; 104:302-307. [PMID: 38246776 DOI: 10.3760/cma.j.cn112137-20231016-00766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Wastewater-based epidemiology (WBE) is an emerging discipline, which has been applied to drug abuse tracking and infectious disease pathogen surveillance. During the COVID-19 epidemic, WBE has been applied to monitor the epidemic trend and SARS-CoV-2 variants etc. In order to detect hidden COVID-19 cases and prevent transmission in the community, wastewater surveillance system for monitoring SARS-CoV-2 RNA was developed in Shenzhen. The sewage sampling sites were set up in key places such as the port areas, urban villages and residential communities of Futian, Nanshan, Luohu and Yantian districts. From July 26 to November 30, 2022, a total of 369 sewage sampling sites were set up, covering 1.93 million people. Continuous sampling was carried out for 3 hours in the peak period of water use every day. Sewage virus enrichment and SARS-CoV-2 nucleic acid detection were carried out by polyethylene glycol precipitation method and RT-qPCR, and a positive water sample disposal process was molded. This article aims to introduce the case of source tracing of COVID-19 infected patients based on urban sewage in Shenzhen. The sewage monitoring of Honghu water treatment plant in Luohu District played an early warning role, and the source of infection was traced. In the disposal of positive water samples in Futian South Road, Futian District, the important experience of monitoring point layout was obtained. In the sewage monitoring of Nanshan village, Nanshan District, the existence of occult infection was revealed. Sharing the experience of tracing the source of COVID-19 patients to avoid the spread of COVID-19 in the community based on wastewater surveillance of SARS-CoV-2 RNA in Shenzhen, and summarizing the advantages and application prospects of sewage surveillance can provide new ideas for monitoring emerging or re-emerging pathogens that are known to exhibit gastrointestinal excretion in the future.
Collapse
Affiliation(s)
- Y J Peng
- Biosafety Research Center, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Y H Li
- Microbiology Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - C Du
- Microbiology Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y S Guo
- Division of Public Health Emergency, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - J T Song
- Water Ecology and Environment Division, Shenzhen Ecology and Environment Bureau, Shenzhen 518040, China
| | - C Y Jia
- Water Ecology and Environment Division, Shenzhen Ecology and Environment Bureau, Shenzhen 518040, China
| | - X Zhang
- Water Ecology and Environment Division, Shenzhen Ecology and Environment Bureau, Shenzhen 518040, China
| | - M J Liu
- Futian District Water Affairs Bureau, Shenzhen 518035, China
| | - Z M Wang
- Futian District Water Affairs Bureau, Shenzhen 518035, China
| | - B Liu
- Division of Water Supply and Drainage Management, Futian District Water Affairs Bureau, Shenzhen 518035, China
| | - S L Yan
- Division of Drainage and Disaster Prevention, Nanshan District Water Affairs Bureau, Shenzhen 518052, China
| | - Y X Yang
- Division of Drainage and Disaster Prevention, Nanshan District Water Affairs Bureau, Shenzhen 518052, China
| | - X L Tang
- Luohu Management Branch of Ecology Environment Bureau of Shenzhen Municipality, Shenzhen 518001, China
| | - G X Lin
- Division of Environmental Management, Luohu Management Branch of Ecology Environment Bureau of Shenzhen Municipality, Shenzhen 518001, China
| | - X Y Li
- Futian District Center for Disease Control and Prevention, Shenzhen 518040, China
| | - Y Zhang
- Department of Microbiological Laboratory, Futian District Center for Disease Control and Prevention, Shenzhen 518040, China
| | - J H Yuan
- Nanshan District Center for Disease Control and Prevention, Shenzhen 518054, China
| | - S K Xu
- Department of Infectious Disease Control and Prevention, Nanshan District Center for Disease Control and Prevention, Shenzhen 518054, China
| | - C D Chen
- Luohu District Center for Disease Control and Prevention, Shenzhen 518020, China
| | - J H Lu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - X Zou
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - C S Wan
- Biosafety Research Center, School of Public Health, Southern Medical University, Guangzhou 510515, China BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Q H Hu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| |
Collapse
|
2
|
Selcer KW, Lin GX, Beale EG, Leavitt WW. Serum corticosteroid-binding globulin (CBG) and hepatic CBG mRNA relationships during hamster pregnancy: contribution of decidualization. Biol Reprod 1991; 44:185-90. [PMID: 2015348 DOI: 10.1095/biolreprod44.1.185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We measured serum corticosteroid-binding globulin (CBG) and hepatic CBG mRNA from individual hamsters throughout pregnancy and during decidualization. Serum CBG levels were determined by 3H-cortisol binding assay, and hepatic CBG mRNA levels were measured by Northern blots and solution hybridization assays, using a 32P-labeled cRNA probe derived from a rat CBG cDNA. There was a positive relationship between hepatic CBG mRNA levels and serum CBG levels during pregnancy. Both parameters increased significantly from the time of mating (cycle Day 4) to pregnancy Day 4, showing that CBG synthesis and secretion increased prior to implantation (Day 4). After implantation, serum CBG and hepatic CBG mRNA rose further from pregnancy Day 4 to a peak on Day 14, then decreased before parturition on Day 16. The prepartum decline in hepatic CBG mRNA preceded the fall in serum CBG. Decidualization on pseudopregnancy Day 4 resulted in an increase in serum CBG and hepatic CBG mRNA. Hepatic CBG mRNA increased from Day 5 to Day 7, and serum CBG increased progressively from Day 5 through Day 9 after uterine decidualization in the hamster. The present results demonstrate that the pattern of serum CBG observed in the pregnant hamster follows closely that of hepatic CBG mRNA. A signal emanating from uterine decidual tissue appears to be important in the regulation of hepatic CBG synthesis and secretion during midpregnancy, but other unknown factors appear to be involved in controlling CBG during the early and late stages of pregnancy.
Collapse
Affiliation(s)
- K W Selcer
- Department of Biological Sciences, Wichita State University, Kansas 67208
| | | | | | | |
Collapse
|
3
|
Lin GX, Selcer KW, Beale EG, Gray GO, Leavitt WW. Characterization of the corticosteroid-binding globulin messenger ribonucleic acid response in the pregnant hamster. Endocrinology 1990; 127:1934-40. [PMID: 2401237 DOI: 10.1210/endo-127-4-1934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this study we measured corticosteroid-binding globulin (CBG) mRNA levels in liver and various nonhepatic tissues of pregnant and nonpregnant hamsters. The N-terminal amino acid sequence (37 residues) of hamster CBG was determined and compared with published cDNA-deduced sequence information for rat and human CBG. Hamster CBG showed considerable sequence homology with both rat (70%) and human (59%) CBG. Because of the high level of homology, we were able to use a cRNA prepared from a rat CBG cDNA as a probe in Northern blot and solution hybridization analyses. Northern blots of hamster and rat liver RNA extracts revealed that the rat CBG cDNA probe hybridized to RNAs that were the same size in rats and hamsters. Further, the Northern blot showed that pregnant hamster liver contained substantially more CBG mRNA than nonpregnant hamster liver. The relative amounts of CBG mRNA in pregnant and nonpregnant hamster livers were compared using a solution hybridization assay. Slope-ratio analysis of the hybridization data revealed that pregnant hamster liver (day 14) contained 40-fold more CBG mRNA than nonpregnant hamster liver. When other tissues (kidney, spleen, small intestine, and decidual tissue) were assayed for CBG mRNA, a small amount of hybridization was detected by solution hybridization. However, Northern blot analysis of RNA extracts from nonhepatic tissues showed that the hybridizable sequences did not migrate at the same position as mature CBG mRNA. These results indicate that the observed increase in serum CBG during hamster pregnancy is largely attributable to an increase in hepatic CBG mRNA.
Collapse
Affiliation(s)
- G X Lin
- Department of Biological Sciences, Wichita State University, Kansas 67208
| | | | | | | | | |
Collapse
|