Molecular identification and characterization of rat Abcc1 cDNA: existence of two splicing variants and species difference in drug-resistance profile

2003 ◽  
Vol 3 (3) ◽  
pp. 136-146 ◽  
Author(s):  
Shin-ichiro Takayanagi ◽  
Toshihisa Ishikawa
2022 ◽  
Vol 21 (1) ◽  
Author(s):  
Godfrey Manirakiza ◽  
Kennedy Kassaza ◽  
Ivan Mugisha Taremwa ◽  
Joel Bazira ◽  
Fredrick Byarugaba

Abstract Background The evolution of malaria infection has necessitated the development of highly sensitive diagnostic assays, as well as the use of dried blood spots (DBS) as a potential source of deoxyribonucleic acid (DNA) yield for polymerase chain reaction (PCR) assays. This study identified the different Plasmodium species in malaria-positive patients, and the anti-malarial drug resistance profile for Plasmodium falciparum using DBS samples collected from patients attending Kisoro Hospital in Kisoro district, Southwestern Uganda. Methods The blood samples were prospectively collected from patients diagnosed with malaria to make DBS, which were then used to extract DNA for real-time PCR and high-resolution melting (HRM) analysis. Plasmodium species were identified by comparing the control and test samples using HRM-PCR derivative curves. Plasmodium falciparum chloroquine (CQ) resistance transporter (pfcrt) and kelch13 to screen the samples for anti-malarial resistance markers. The HRM-PCR derivative curve was used to present a summary distribution of the different Plasmodium species as well as the anti-malarial drug profile. Results Of the 152 participants sampled, 98 (64.5%) were females. The average age of the participants was 34.9 years (range: 2 months–81 years). There were 134 samples that showed PCR amplification, confirming the species as Plasmodium. Plasmodium falciparum (N = 122), Plasmodium malariae (N = 6), Plasmodium ovale (N = 4), and Plasmodium vivax (N = 2) were the various Plasmodium species and their proportions. The results showed that 87 (71.3%) of the samples were sensitive strains/wild type (CVMNK), 4 (3.3%) were resistant haplotypes (SVMNT), and 31 (25.4%) were resistant haplotypes (CVIET). Kelch13 C580Y mutation was not detected. Conclusion The community served by Kisoro hospital has a high Plasmodium species burden, according to this study. Plasmodium falciparum was the dominant species, and it has shown that resistance to chloroquine is decreasing in the region. Based on this, molecular identification of Plasmodium species is critical for better clinical management. Besides, DBS is an appropriate medium for DNA preservation and storage for future epidemiological studies.


Cancers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 3523
Author(s):  
Wancheng Guo ◽  
Haiqin Wang ◽  
Peng Chen ◽  
Xiaokai Shen ◽  
Boxin Zhang ◽  
...  

Multiple myeloma (MM) is a B-cell tumor of the blood system with high incidence and poor prognosis. With a further understanding of the pathogenesis of MM and the bone marrow microenvironment, a variety of adjuvant cell therapies and new drugs have been developed. However, the drug resistance and high relapse rate of MM have not been fundamentally resolved. Studies have shown that, in patients with MM, there is a type of poorly differentiated progenitor cell (MM stem cell-like cells, MMSCs). Although there is no recognized standard for identification and classification, it is confirmed that they are closely related to the drug resistance and relapse of MM. This article therefore systematically summarizes the latest developments in MMSCs with possible markers of MMSCs, introduces the mechanism of how MMSCs work in MM resistance and recurrence, and discusses the active pathways that related to stemness of MM.


2007 ◽  
Vol 64 (5) ◽  
pp. 539-547 ◽  
Author(s):  
Silke Robatzek ◽  
Pascal Bittel ◽  
Delphine Chinchilla ◽  
Petra Köchner ◽  
Georg Felix ◽  
...  

2014 ◽  
Vol 34 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Seung Heon Lee ◽  
Hee Kyung Yoo ◽  
Seol Hee Kim ◽  
Won-Jung Koh ◽  
Chang Ki Kim ◽  
...  

2015 ◽  
Vol 8 (1) ◽  
pp. 18 ◽  
Author(s):  
Wei Yang ◽  
Ling Li ◽  
Ruo Liu ◽  
Ge Sun ◽  
Chun Liu ◽  
...  

Leukemia ◽  
2004 ◽  
Vol 18 (3) ◽  
pp. 521-529 ◽  
Author(s):  
N L Ramakers-van Woerden ◽  
H B Beverloo ◽  
A J P Veerman ◽  
B M Camitta ◽  
A H Loonen ◽  
...  

2019 ◽  
Vol 101 (3) ◽  
pp. 783-783
Author(s):  
Mounira Inas Drais ◽  
Raied Abou Kubaa ◽  
Chahinez Ghezli ◽  
Leonardo Varvaro ◽  
Khaled Djelouah

Sign in / Sign up

Export Citation Format

Share Document