DNA damage assessment in peripheral blood of Swiss albino mice after combined exposure to volatile anesthetics and 1 or 2 Gy radiotherapy in vivo

Author(s):  
Vesna Benković ◽  
Nikola Borojević ◽  
Dunja Šikić ◽  
Anica Horvat Knežević ◽  
Mirta Milić
Author(s):  
Vesna Benkovic ◽  
Nikola Borojević ◽  
Nada Oršolić ◽  
Gordana Brozović ◽  
Anica Horvat Knežević ◽  
...  

2021 ◽  
Author(s):  
Vesna Benković ◽  
Nikola Borojević ◽  
Nada Oršolić ◽  
Gordana Brozović ◽  
Anica Horvat Knežević ◽  
...  

2022 ◽  
Author(s):  
Joseph Tchamgoue ◽  
Amelework N. Eyado ◽  
Boniface P. Kamdem Kamdem ◽  
Yvan Anderson T. Ngandjui Ngandjui ◽  
Jean Claude Tchouankeu ◽  
...  

Malaria is regarded as one of the most lethal diseases. Resistance to artemisinin and its derivatives jeopardises effective malaria treatment. Finding novel antimalarial chemicals is critical given the existing treatment situation. This work aimed to examine the antiplasmodial capabilities of <i>Pseudarthria hookeri</i> fractions and flavonoids in vivo. The fractions and compounds antiplasmodial activity were evaluated on male Swiss albino mice infected with <i>Plasmodium berghei</i>, and on healthy female Swiss albino mice, the crude extract's acute toxicity was assessed. The EtOAc fraction had significant antiplasmodial activity (32.53 percent suppression at 500 mg/kg BW) and considerably prolonged the survival period of infected mice (9.8 days) compared to control mice (7.8 days). Parasitaemia was dramatically reduced (85.01, 59.41, and 70.39 percent), and the mean survival time extended (11.33, 10.00, and 9.33 days) with 15, 20 and 35 mg/kg of quercetin (<b>1</b>), 7-O-benzyl-6-prenylpinocembrin (<b>6</b>) and 6,8-diprenyleriodictyol (<b>11</b>) (isolates of the EtOAc fraction), respectively. BW loss and PCV reduction were also averted. Moreover, at 2500 mg/kg, the crude extract of <i>P. hookeri</i> showed no acute toxicity in mice. LC-MS analysis of the EtOAc fraction enabled the identification of nine flavonoids, with <b>8</b> and <b>11</b> being the main components. The present investigation confirmed <i>P. hookeri</i>'s antiplasmodial action, substantiating its ethnomedicinal application for malaria treatment.


2020 ◽  
Vol 27 (12) ◽  
pp. 3267-3273
Author(s):  
Sumaira Naz ◽  
Muhammad Zahoor ◽  
Muhammad Naveed Umar ◽  
Fatmah S. AlQahtany ◽  
Yousif M. Elnahas ◽  
...  

Toxicology ◽  
2001 ◽  
Vol 165 (1) ◽  
pp. 1-11 ◽  
Author(s):  
S Qureshi ◽  
O.A Al-Shabanah ◽  
M.M Al-Harbi ◽  
A.M Al-Bekairi ◽  
M Raza

2018 ◽  
Vol 34 (5) ◽  
pp. 315-327 ◽  
Author(s):  
Neelam Pandey ◽  
Sarbani Giri

Increasing male infertility of unknown aetiology can be associated with environmental factors. Extensive use of mobile phones has exposed the general population to unprecedented levels of radiofrequency radiations (RFRs) that may adversely affect male reproductive health. Therefore, the present study investigated the effect of RFR Global System for Mobile communication (GSM) type, 900 MHz and melatonin supplementation on germ cell development during spermatogenesis. Swiss albino mice were divided into four groups. One group received RFR exposure for 3 h twice/day for 35 days and the other group received the same exposure but with melatonin ( N-acetyl-5-methoxytryptamine) (MEL; 5 mg/kg bw/day). Two other groups received only MEL or remain unexposed. Sperm head abnormality, total sperm count, biochemical assay for lipid peroxides, reduced glutathione, superoxide dismutase activity and testis histology were evaluated. Additionally, flow cytometric evaluation of germ cell subtypes and comet assay were performed in testis. Extensive DNA damage in germ cells of RFR-exposed animals along with arrest in pre-meiotic stages of spermatogenesis eventually leading to low sperm count and sperm head abnormalities were observed. Furthermore, biochemical assays revealed excess free radical generation resulting in histological and morphological changes in testis and germ cells morphology, respectively. However, these effects were either diminished or absent in RFR-exposed animals supplemented with melatonin. Hence, it can be concluded that melatonin inhibits pre-meiotic spermatogenesis arrest in male germ cells through its anti-oxidative potential and ability to improve DNA reparative pathways, leading to normal sperm count and sperm morphology in RFR-exposed animals.


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