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1.
Future Oncol ; 19(35): 2369-2382, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37970643

RESUMEN

Colorectal cancer (CRC) is a significant contributor to cancer mortality worldwide, and the presence of cancer stem cells (CSC) represents a major challenge for achieving effective treatment. miRNAs have emerged as critical regulators of gene expression, and recent studies have highlighted their role in regulating stemness and therapeutic resistance in CRC stem cells. This review highlights the mechanisms of CSC development, therapy resistance and the potential of miRNAs as therapeutic targets for CRC. It emphasizes the promise of miRNAs as a novel approach to CRC treatment and calls for further research to explore effective miRNA-based therapies and strategies for delivering miRNAs to CSCs in vivo.


Asunto(s)
Neoplasias Colorrectales , MicroARNs , Humanos , MicroARNs/genética , MicroARNs/metabolismo , Neoplasias Colorrectales/terapia , Neoplasias Colorrectales/tratamiento farmacológico , Células Madre Neoplásicas/metabolismo , Regulación Neoplásica de la Expresión Génica
2.
Mol Biol Rep ; 50(11): 9575-9585, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37776413

RESUMEN

Colorectal cancer (CRC) is a serious global health concern, with a high incidence and mortality rate. Although there have been advancements in the early detection and treatment of CRC, therapy resistance is common. MicroRNAs (miRNAs), a type of small non-coding RNA that regulates gene expression, are key players in the initiation and progression of CRC. Recently, there has been growing attention to the complex interplay of miRNAs in cancer development. miRNAs are powerful RNA molecules that regulate gene expression and have been implicated in various physiological and pathological processes, including carcinogenesis. By identifying current challenges and limitations of treatment strategies and suggesting future research directions, this review aims to contribute to ongoing efforts to enhance CRC diagnosis and treatment. It also provides a comprehensive overview of the role miRNAs play in CRC carcinogenesis and explores the potential of miRNA-based therapies as a treatment option. Importantly, this review highlights the exciting potential of targeted modulation of miRNA function as a therapeutic approach for CRC.


Asunto(s)
Neoplasias Colorrectales , MicroARNs , Humanos , MicroARNs/metabolismo , Neoplasias Colorrectales/terapia , Neoplasias Colorrectales/tratamiento farmacológico , Regulación Neoplásica de la Expresión Génica/genética , Carcinogénesis/genética , Predicción , Biomarcadores de Tumor/genética , Biomarcadores de Tumor/metabolismo , Redes Reguladoras de Genes/genética
3.
BMC Pregnancy Childbirth ; 20(1): 266, 2020 May 06.
Artículo en Inglés | MEDLINE | ID: mdl-32375724

RESUMEN

BACKGROUND: Candida is the leading cause of vaginitis, and 75% of women have at least one episode of infection in their lives, with pregnancy being a predisposing factor. If left untreated, vulvovaginal candidiasis (VVC) can lead to chorioamnionitis with subsequent abortion, prematurity and congenital infection of the neonate. We aimed to determine the prevalence of VVC, identify the recent and most frequently occurring species of Candida in pregnant women, and determine the most effective antifungal drug of choice for treatment. METHOD: A prospective cross-sectional study in which 176 high vaginal swab samples of consented pregnant women visiting the antenatal clinic from February 2018 to April 2018 were subjected to direct gram smear and culture for Candida isolation. Candida isolates were identified using a germ tube test and HiCrome Candida differential agar. Candida isolates were then subjected to a disk diffusion method using fluconazole (25 µg), nystatin (100 units), and voriconazole (1 µg) on Mueller-Hinton agar supplemented with 2% (w/v) glucose and 0.5 µg/ml methylene blue dye to determine the susceptibility pattern as per the guidelines of the Clinical Laboratory Standard Institute (CLSI). Chi-square analysis was used to ascertain the significant association of participants' sociodemographics and clinical presentations to VVC. A univariate logistic regression model was used to identify potential risk factors of VVC. RESULTS: The prevalence of VVC among our study participants was 30.7%. Non-albicans Candida (NAC) and Candida albicans had a prevalence of 74.1 and 25.9%, respectively. Candida glabrata was the most common species, followed by Candida albicans, Candida krusei, and Candida parapsilosis. 50.0, 18.5 and 3.7% of Candida species were susceptible to voriconazole, fluconazole and nystatin, respectively, whereas 37.0, 48.1 and 9.3% of Candida species were resistant to voriconazole, fluconazole and nystatin, respectively. The majority of isolates were susceptible dose dependent to all three antifungal agents, with voriconazole being the most efficacious antifungal agent. There was no significant association between participants' socio-demographic information and clinical presentations to VVC. CONCLUSION: The prevalence of VVC was high in the study area. C. glabrata was found to be the most common cause of VVC among the pregnant women attending antenatal clinics, in the Ho Municipality region of Ghana. The majority of the Candida isolates were susceptible and resistant to voriconazole and fluconazole, respectively.


Asunto(s)
Candidiasis Vulvovaginal/epidemiología , Complicaciones del Embarazo/epidemiología , Adolescente , Adulto , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Candida/clasificación , Candida/efectos de los fármacos , Candida/aislamiento & purificación , Candida albicans/efectos de los fármacos , Candida albicans/aislamiento & purificación , Candida glabrata/efectos de los fármacos , Candida glabrata/aislamiento & purificación , Candida parapsilosis/efectos de los fármacos , Candida parapsilosis/aislamiento & purificación , Candidiasis Vulvovaginal/tratamiento farmacológico , Candidiasis Vulvovaginal/microbiología , Estudios Transversales , Femenino , Fluconazol/farmacología , Fluconazol/uso terapéutico , Ghana/epidemiología , Humanos , Pruebas de Sensibilidad Microbiana , Pichia/efectos de los fármacos , Pichia/aislamiento & purificación , Embarazo , Complicaciones del Embarazo/microbiología , Mujeres Embarazadas , Prevalencia , Estudios Prospectivos , Frotis Vaginal , Voriconazol/farmacología , Voriconazol/uso terapéutico , Adulto Joven
4.
Adv Hematol ; 2020: 9369758, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32095139

RESUMEN

BACKGROUND: Malaria is known to cause severe health consequences due to its marked effects and alteration on the haematological parameters of infected individuals. This study evaluated the haematological profile of adult individuals infected with the malaria parasite. METHODS: A retrospective study was conducted using archived data of malaria positive cases from January 2017 to March 15, 2019. Data retrieved included subjects' demographics, malaria parasite count, malaria parasite species, and full blood count parameters. A total of 236 malaria positive subjects were included in the study. RESULTS: The study showed that more females were infected with the malaria parasite than males (69.07% and 30.93%, respectively). A total of 87.3% of the study population were infected with Plasmodium falciparum as compared to 12.7% infected with Plasmodium malariae. The commonest haematological abnormalities that were seen in this study were lymphopenia (56.78%), anaemia (55.51%), thrombocytopenia (47.46%), eosinopenia (45.76%), neutropenia (29.24%), monocytosis (21.19%), and leucocytosis (17.37%) in the infected subjects. The mean platelet count of P. falciparum-infected subjects was decreased as compared to the mean platelet count of P. malariae-infected subjects. There was a significant (P value <0.05) decrease in the number of platelet count with every unit increase in parasite density. CONCLUSION: Study participants infected with malaria demonstrated vital changes in haematological parameters with anaemia, thrombocytopenia, lymphopenia, monocytosis, and eosinopenia being the most important predictors of malaria infection especially with P. falciparum species.P. falciparum-infected subjects was decreased as compared to the mean platelet count of.

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