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  1. Article ; Online: Effect of Tarantula cubensis alcohol extract and Capecitabin combine in Colorectal Cancer rats

    Rahmi Canbar / Ozgur Ozdemir / Ahmet Levent Bas

    Revista Científica, Vol 33, Iss

    2023  Volume 2

    Abstract: Colon cancer (CRC) is one of the most common types of cancer in the world. In this study, the effects of Tarantula cubensis alcoholic extract (TCAE) and the Capecitabine in CRC were investigated. Wistar albino rats were divided into eight groups with 12 ... ...

    Abstract Colon cancer (CRC) is one of the most common types of cancer in the world. In this study, the effects of Tarantula cubensis alcoholic extract (TCAE) and the Capecitabine in CRC were investigated. Wistar albino rats were divided into eight groups with 12 animals in each group: untreated healthy and CRC groups, healthy and CRC groups treated with TCAE or Capecitabine, and healthy and CRC groups treated with both TCAE and Capecitabine. Azoxymethane was used in all CRC groups. TCAE and Capecitabine were administered to the relevant groups starting in the 15th week. All rats were euthanized after 18 weeks, and tissue samples were collected. The mRNA levels of Bcl–2, Bax, and Cas–3 in the harvested tissues were determined using real–time PCR and histopathologically abnormal crypt foci (ACF) scores were determined. It was found that TCAE modulated the decreased Bax/Bcl–2 expression rate in the CC group, but had the opposite effect in healthy animals, which was significantly reduced compared to the healthy groups (P<0.05). In addition, this rate was significantly lower in Capecitabine administered groups compared to other groups, and a paradoxical effect was observed (P<0.05). No significant change was observed in Cas–3 expression levels in all groups (P>0.05). Importantly, single and combined use of TCAE and Capecitabine in rats with CRC significantly reduced ACF scores (P<0.05). It can be stated that TCAE can specifically modulate the decreased Bax/Bcl–2 ratio in animals with cancer, and the therapeutic efficacy of Capecitabine is achieved at a dose of 40 mg·kg-1.
    Keywords Azoxymethane ; Capecitabine ; colorectal cancer ; TCAE ; Cattle ; SF191-275 ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher Universidad del Zulia
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Determination of Embryotoxic effects of Atipamezole using in ovo model

    Rahmi Canbar / Muhittin Uslu / Mustafa Sedat Arslan / Harun Kızılay

    Revista Científica, Vol 33, Iss

    2023  Volume 1

    Abstract: Atipamezole is a specific α2-adrenergic receptor antagonist, and there exists insufficient information on its use during pregnancy. The aim of this study was to determine the embryotoxic activity of Atipamezole through an in ovo method. During the first ... ...

    Abstract Atipamezole is a specific α2-adrenergic receptor antagonist, and there exists insufficient information on its use during pregnancy. The aim of this study was to determine the embryotoxic activity of Atipamezole through an in ovo method. During the first stage of the study, 210 fertile eggs were divided into seven groups of 30 fertile eggs and placed in an incubator. On the seventh day of the first stage, no application was made to the control group. The second group was administered 50 microliters (µL) of saline solution, while the other groups were given Atipamezole at doses of 250, 125, 62.5, 31.25 and 15.62 micrograms·egg-1 (µg·egg-1) in 50 µL saline solution. In the second stage, according to the embryotoxic dose range determined from the first stage, 150 fertile eggs were divided into five groups of 30 fertile eggs and placed in an incubator. On the seventh day of the second stage, no application was made to the control group. Fifty µL of saline solution was administered to the second group. The other groups were given Atipamezole at doses of 220, 190 and 160 µg·egg-1 in 50 µL saline solution. After the incubation period, the eggs hatched, and the embryonic mortality rates were calculated. The mortality rate was determined to be 39.3% at the highest dose (250 µg·egg-1 = 5 miligrams·kilograms-1 –mg·kg-1–) (P<0.05), while the mortality rate at other doses was determined to be the same as the control group (P>0.05). In conclusion, it can be stated that the dose determined for Atipamezole in this study was very high compared to the recommended doses and it can be used in pregnancy as a benefit-loss calculation when necessary. However molecular or histopathological studies regarding the development of organ drafts are necessary to determine the safety of its use during pregnancy.
    Keywords Atipamezole ; embryotoxicity ; in ovo ; Cattle ; SF191-275 ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher Universidad del Zulia
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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