scholarly journals In vitro induction of apoptosis and in vivo effects of a flavone nitroderivative in murine mammary adenocarcinoma cells

2009 ◽  
Vol 125 (1) ◽  
pp. 222-228 ◽  
Author(s):  
Mariano G. Cárdenas ◽  
Elsa Zotta ◽  
Mariel Marder ◽  
Leonor P. Roguin
Keyword(s):  
Mammary Adenocarcinoma ◽  
Adenocarcinoma Cells ◽  
Induction Of Apoptosis ◽  
In Vivo Effects ◽  
In Vitro Induction

scholarly journals Antitumor in vitro and in vivo effects of lipid composites of cisplatin and ferromagnetic nanoparticles capsulated by carbonic coating

2010 ◽  
Vol 9 (1) ◽  
pp. 9-16 ◽  
Author(s):  
S. A. Antipov ◽  
T. A. Feduschak ◽  
O. V. Kokorev ◽  
Ye. A. Gereng ◽  
G. Ts. Dambayev ◽  
...  
Keyword(s):  
Direct Contact ◽  
Malignant Cell ◽  
Cytostatic Drug ◽  
Ferromagnetic Nanoparticles ◽  
Biotechnological Approach ◽  
Adenocarcinoma Cells ◽  
In Vivo Effects ◽  
Stimulation Of

An investigation of in vitro and in vivo reaction of adenocarcinoma cells in conditions of direct contact with composites designed in a base of phospholipid concentrate, cisplatin and nanoparticles (diameter less than 10 nm) of iron capsulated by carbonic coating was the aim of paper. Their antitumor effect has been established to be conditioned by direct cytotoxic relatively elective action on malignant cell and, on the other hand, by stimulation of tumor node fibrosis. Proposed biotechnological approach that used low doses of cytostatic drug (1/10 LD50) and nanoferromagnetic particles (2 mg/kg) may be useful to design magnetocontrollable regimes for regional immuno(bio)therapy of cancer and its metastases.

Inhibition of in vitro lymphoproliferative responses by in vivo passaged rat 13762 mammary adenocarcinoma cells

1977 ◽  
Vol 33 (2) ◽  
pp. 364-377 ◽  
Author(s):  
D.A. Campbell ◽  
E.K. Manders ◽  
J.R. Oehler ◽  
G.D. Bonnard ◽  
R.K. Oldham ◽  
...  
Keyword(s):  
Mammary Adenocarcinoma ◽  
Adenocarcinoma Cells

Inhibition of Proliferation and Induction of Apoptosis of HT-29 Colorectal Adenocarcinoma Cells in Vitro by Anthocyanins from Lonicera Edulis

2011 ◽  
Vol 233-235 ◽  
pp. 2945-2948 ◽  
Author(s):  
Yi Hong Bao ◽  
Wen Xing Li ◽  
Zhen Yu Wang
Keyword(s):  
Colorectal Adenocarcinoma ◽  
Inhibitory Effects ◽  
Inhibition Of Proliferation ◽  
Ht29 Cells ◽  
Transmission Electron ◽  
Adenocarcinoma Cells ◽  
Induction Of Apoptosis ◽  
Ht 29

Anthocyanins was known for their antioxidant and pharmacological properties used by humans for therapeutic purposes. Here, we study the inhibitory effects of anthocyanins fromLonicera edulison the proliferation of HT-29 colorectal adenocarcinoma cells and its possible mechanism in vivo by MTT. The different percentages of apoptotic cells present in flow cytometry analysis. The effect on HT29 cells was enhanced with increasing amount of anthocyanins. Typical morphological features of apoptosis were observed by transmission electron microscope. The mechanism of anthocyanins from Lonicera edulis on HT29 cell growth inhibition may be related to the induction of apoptosis.

Inhibition of in vitro lymphoproliferative responses by in vivo passaged rat 13762 mammary adenocarcinoma cells

1977 ◽  
Vol 33 (2) ◽  
pp. 378-391 ◽  
Author(s):  
D.A. Campbell ◽  
S.P. Staal ◽  
E.K. Manders ◽  
G.D. Bonnard ◽  
R.K. Oldham ◽  
...  
Keyword(s):  
Mammary Adenocarcinoma ◽  
Adenocarcinoma Cells

Pharmacology of 5-HT1A Receptors: Critical Aspects

CNS Spectrums ◽  
1998 ◽  
Vol 3 (10) ◽  
pp. 17-38 ◽  
Author(s):  
Franco Borsini
Keyword(s):  
Receptor Subtypes ◽  
Laboratory Conditions ◽  
In Vivo Effects ◽  
Critical Aspects

AbstractMyriad difficulties exist in analyzing the pharmacology of the serotonin 1A (5-HT1A) receptor. The receptor may demonstrate a different activity depending on the tissue or species used for analysis, the agent used, laboratory conditions, and differences between in vitro and in vivo effects of compounds. Affinity for 5-HT receptors also varies widely, presenting difficulties in drawing definitive conclusions on affinity values for various compounds. At least two possibilities exist to explain the diversity of pharmacology of 5-HT receptors. First, it is possible that different 5-HT1A receptor subtypes exist. Second, the 5-HT1A receptors may play a far more complex role than previously believed.

In vitro evaluation of estrogenic, antiestrogenic and antitumor effects of amentoflavone

2021 ◽  
pp. 096032712199945
Author(s):  
AT Aliyev ◽  
S Ozcan-Sezer ◽  
A Akdemir ◽  
H Gurer-Orhan
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Antitumor Effects ◽  
Antiestrogenic Activity ◽  
Er Positive ◽  
In Vivo Effects ◽  
Mcf 7

Apigenin, a flavonoid, is reported to act as an estrogen receptor (ER) agonist and inhibit aromatase enzyme. However, amentoflavone, a biflavonoid bearing two apigenin molecules, has not been evaluated for its endocrine modulatory effects. Besides, it is highly consumed by young people to build muscles, enhance mood and lose weight. In the present study, apigenin was used as a reference molecule and ER mediated as well as ER-independent estrogenic/antiestrogenic activity of amentoflavone was investigated. Antitumor activity of amentoflavone was also investigated in both ER positive (MCF-7 BUS) and triple-negative (MDA-MB-231) breast cancer cells and its cytotoxicity was evaluated in human breast epithelial cells (MCF-10A). Our data confirmed ER agonist, aromatase inhibitory and cytotoxic effects of apigenin in breast cancer cells, where no ER mediated estrogenic effect and physiologically irrelevant, slight, aromatase inhibition was found for amentoflavone. Although selective cytotoxicity of amentoflavone was found in MCF-7 BUS cells, it does not seem to be an alternative to the present cytotoxic drugs. Therefore, neither an adverse effect, mediated by an estrogenic/antiestrogenic effect of amentoflavone nor a therapeutical benefit would be expected from amentoflavone. Further studies could be performed to investigate its in vivo effects.

scholarly journals Effects of Bacterial CLPB Protein Fragments on Food Intake and PYY Secretion

Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2223
Author(s):  
Manon Dominique ◽  
Nicolas Lucas ◽  
Romain Legrand ◽  
Illona-Marie Bouleté ◽  
Christine Bôle-Feysot ◽  
...  
Keyword(s):  
Food Intake ◽  
Peptide Yy ◽  
Molecular Mimicry ◽  
Potential Effect ◽  
In Vivo Studies ◽  
Sprague Dawley ◽  
E Coli ◽  
In Vivo Effects

CLPB (Caseinolytic peptidase B) protein is a conformational mimetic of α-MSH, an anorectic hormone. Previous in vivo studies have already shown the potential effect of CLPB protein on food intake and on the production of peptide YY (PYY) by injection of E. coli wild type (WT) or E. coli ΔClpB. However, until now, no study has shown its direct effect on food intake. Furthermore, this protein can fragment naturally. Therefore, the aim of this study was (i) to evaluate the in vitro effects of CLPB fragments on PYY production; and (ii) to test the in vivo effects of a CLPB fragment sharing molecular mimicry with α-MSH (CLPB25) compared to natural fragments of the CLPB protein (CLPB96). To do that, a primary culture of intestinal mucosal cells from male Sprague–Dawley rats was incubated with proteins extracted from E. coli WT and ΔCLPB after fragmentation with trypsin or after a heat treatment of the CLPB protein. PYY secretion was measured by ELISA. CLPB fragments were analyzed by Western Blot using anti-α-MSH antibodies. In vivo effects of the CLPB protein on food intake were evaluated by intraperitoneal injections in male C57Bl/6 and ob/ob mice using the BioDAQ® system. The natural CLPB96 fragmentation increased PYY production in vitro and significantly decreased cumulative food intake from 2 h in C57Bl/6 and ob/ob mice on the contrary to CLPB25. Therefore, the anorexigenic effect of CLPB is likely the consequence of enhanced PYY secretion.

scholarly journals Dual Role of Interleukin-10 in Murine NZB/W F1 Lupus

2021 ◽  
Vol 22 (3) ◽  
pp. 1347
Author(s):  
Anaïs Amend ◽  
Natalie Wickli ◽  
Anna-Lena Schäfer ◽  
Dalina T. L. Sprenger ◽  
Rudolf A. Manz ◽  
...  
Keyword(s):  
B Cell ◽  
Disease Model ◽  
Interleukin 10 ◽  
Immune Functions ◽  
Murine Lupus ◽  
Anti Inflammatory ◽  
In Vivo Effects

As a key anti-inflammatory cytokine, IL-10 is crucial in preventing inflammatory and autoimmune diseases. However, in human and murine lupus, its role remains controversial. Our aim was to understand regulation and immunologic effects of IL-10 on different immune functions in the setting of lupus. This was explored in lupus-prone NZB/W F1 mice in vitro and vivo to understand IL-10 effects on individual immune cells as well as in the complex in vivo setting. We found pleiotropic IL-10 expression that largely increased with progressing lupus, while IL-10 receptor (IL-10R) levels remained relatively stable. In vitro experiments revealed pro- and anti-inflammatory IL-10 effects. Particularly, IL-10 decreased pro-inflammatory cytokines and slowed B cell proliferation, thereby triggering plasma cell differentiation. The frequent co-expression of ICOS, IL-21 and cMAF suggests that IL-10-producing CD4 T cells are important B cell helpers in this context. In vitro and in vivo effects of IL-10 were not fully concordant. In vivo IL-10R blockade slightly accelerated clinical lupus manifestations and immune dysregulation. Altogether, our side-by-side in vitro and in vivo comparison of the influence of IL-10 on different aspects of immunity shows that IL-10 has dual effects. Our results further reveal that the overall outcome may depend on the interplay of different factors such as target cell, inflammatory and stimulatory microenvironment, disease model and state. A comprehensive understanding of such influences is important to exploit IL-10 as a therapeutic target.

Role of Apolipoprotein A-I in Protecting against Endotoxin Toxicity

2004 ◽  
Vol 36 (6) ◽  
pp. 419-424 ◽  
Author(s):  
Juan Ma ◽  
Xue-Ling Liao ◽  
Bin Lou ◽  
Man-Ping Wu
Keyword(s):  
Survival Time ◽  
Binding Capacity ◽  
Density Lipoprotein ◽  
Mtt Method ◽  
Apolipoprotein A ◽  
Plasma Fraction ◽  
Significant Difference ◽  
In Vivo Effects

Abstract High density lipoprotein (HDL) binds lipopolysaccharide (LPS or endotoxin) and neutralizes its toxicity. We investigated the function of Apolipoprotein A-I (ApoA-I), a major apolipoprotein in HDL, in this process. Mouse macrophages were incubated with LPS, LPS+ApoA-I, LPS+ApoA-I+LFF (lipoprotein-free plasma fraction d>1.210 g/ml), LPS+HDL, LPS+HDL+LFF, respectively. MTT method was used to detect the mortality of L-929 cells which were attacked by the release-out cytokines in LPS-activated macrophages. It was found that ApoA-I significantly decreased L-929 cells mortality caused by LPS treatment (LPS vs. LPS+ApoA-I, P<0.05) and this effect became even more significant when LFF was utilized (LPS vs. LPS+ApoA-I+LFF, P<0.01; LPS vs. LPS+HDL+LFF, P<0.01). There was no significant difference between LPS+ApoA-I+LFF and LPS+HDL+LFF treatment, indicating that ApoA-I was the main factor. We also investigated in vivo effects of ApoA-I on mouse mortality rate and survival time after LPS administration. We found that the mortality in LPS+ApoA-I group (20%) and in LPS+ApoA-I+LFF group (10%) was significantly lower than that in LPS group (80%) (P<0.05, P<0.01, respectively); the survival time was (43.20 ± 10.13) h in LPS+ApoA-I group and (46.80 ± 3.79) h in LPS+ApoA-I+LFF group, which were significantly longer than that in LPS group (16.25 ± 17.28) h (P<0.01). We also carried out in vitro binding study to investigate the binding capacity of ApoA-I and ApoA-I+LFF to fluorescence labeled LPS (FITC-LPS). It was shown that both ApoA-I and ApoA-I+LFF could bind with FITC-LPS, however, the binding capacity of ApoA-I+LFF to FITC-LPS (64.47 ± 8.06) was significantly higher than that of ApoA-I alone (24.35 ± 3.70) (P<0.01). The results suggest that: (1) ApoA-I has the ability to bind with and protect against LPS; (2) LFF enhances the effect of ApoA-I; (3) ApoA-I is the major contributor for HDL anti-endotoxin function.

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