Hepatotoxic and hematotoxic effects of sage oil-loaded ifosfamide nanoemulsion in Ehrlich ascites carcinomabearing mice

Purpose: To investigate the hepatotoxic and hematotoxic effects of sage oil-loaded ifosfamide (IFO) nanoemulsion (NE) in Ehrlich ascites carcinoma (EAC)-bearing mice. Methods: Ifosfamide (IFO) was loaded into a NE containing sage oil, and its hepatotoxic and hematotoxic effects were assessed in EAC-bearing mice. Female Swiss albino mice (n = 50) weighing 25 - 30 g (mean weight = 27.5 ± 2.50 g) were randomly assigned to five groups of ten mice each. With the exception of group 1, the mice were inoculated intraperitoneally (i.p.) with 2.5 × 106 EAC/mouse for 48 h. Group I served as negative control, C (-); group II served as positive control, C (+); while groups III - V were treated i.p. with 60 mg/kg IFO in 0.3mL water (free-IFO); 0.3 mL NE (SAGE-NANO), and 60 mg/kg IFO in 0.3 mL SAGE-NANO (SAGE-IFO), respectively. The treatments were administered for three days. Results: Treatment with 60 mg/kg bwt IFO (free-IFO) significantly elevated the activities of aspartate aminotransferase (AST) and alanine aminotransferase (ALT, p < 0.05). However, subsequent treatment with SAGE-IFO significantly reduced the activity of these liver enzymes (p < 0.05). The concentration of reduced glutathione (GSH) as well as the activities of catalase and glutathione reductase (GR) significantly increased, while malondialdehyde (MDA) level decreased significantly in SAGE-IFO group, when compared with free-IFO group (p < 0.05). Treatment with SAGE-IFO significantly restored white blood cell (WBC) count and platelet levels which were altered by free-IFO (p < 0.05). Conclusion: The results obtained in this study suggest that loading IFO in sage oil-NE greatly reduces its hepatotoxicity and hematotoxicity

Protective role of nanoemulsion containing roman chamomile oil against mitomycin C-induced toxicity in Ehrlich ascites carcinoma bearing mice

Mitomycin-C (MC), an anticancer agent, induces oxidative stress in normal tissues causing severe toxicity. The present study aimed to evaluate whether the side effects of MC may be diminished by the incorporation of MC into nanoemulsion containing Roman chamomile oil (RCM-NE). Fifty mice were equally divided into five groups. The first and second groups were the control and the untreated Ehrlich ascites carcinoma bearing mice (EAC), respectively, while the other three groups were EAC-bearing mice treated once intraperitoneally with a dose of 200 µL of RCM-NE, 1 mg/kg−1 MC/200 µL normal saline, and 1 mg/kg−1 MC/200 µL RCM-NE. The protective effect of the RCM-NE was examined by measuring the alterations in complete blood count, organs weight indices, and levels of serum biochemical parameters. The oxidative stress was assessed by measuring lipid peroxidation and enzyme activities of catalase, superoxide dismutase, glutathione reductase, and thioredoxin reductase-1. MC-RCM-NE has significantly reduced the toxicity of MC on the white blood cells and platelets. It improved the renal and cardiac biomarker levels and the antioxidants of the kidney, heart, and thymus. The protective effect of the RCM-NE on the blood and organs against MC toxicity was associated with the decreasing of oxidative stress and maintaining the activity of the antioxidants

Protective role of nanoemulsion containing roman chamomile oil against mitomycin C-induced toxicity in Ehrlich ascites carcinoma bearing mice

33-44Mitomycin-C (MC), an anticancer agent, induces oxidative stress in normal tissues causing severe toxicity. The present study aimed to evaluate whether the side effects of MC may be diminished by the incorporation of MC into nanoemulsion containing Roman chamomile oil (RCM-NE). Fifty mice were equally divided into five groups. The first and second groups were the control and the untreated Ehrlich ascites carcinoma bearing mice (EAC), respectively, while the other three groups were EAC-bearing mice treated once intraperitoneally with a dose of 200 µL of RCM-NE, 1 mg/kg−1 MC/200 µL normal saline, and 1 mg/kg−1 MC/200 µL RCM-NE. The protective effect of the RCM-NE was examined by measuring the alterations in complete blood count, organs weight indices, and levels of serum biochemical parameters. The oxidative stress was assessed by measuring lipid peroxidation and enzyme activities of catalase, superoxide dismutase, glutathione reductase, and thioredoxin reductase-1. MC-RCM-NE has significantly reduced the toxicity of MC on the white blood cells and platelets. It improved the renal and cardiac biomarker levels and the antioxidants of the kidney, heart, and thymus. The protective effect of the RCM-NE on the blood and organs against MC toxicity was associated with the decreasing of oxidative stress and maintaining the activity of the antioxidants

Antitumor activity of doxorubicine-loaded nanoemulsion against Ehrlich ascites carcinoma-bearing mice

Purpose: To evaluate the antitumor activity of doxorubicine (DOX) loaded nanoemulsion (NE) on Ehrlich ascites carcinoma (EAC)-bearing Swiss albino mice.Methods: The mice were divided into five groups (n = 20) according to the administered drug. Groups I - V were labeled as negative control (normal), positive control of the untreated EAC bearing mice (EAC control), blank nanoemulsion (BI-NE), DOX-loaded-NE (DOX/LNE) and free DOX (DOX-Sol), respectively. Cardiotoxicity was assessed by measuring changes in body and organ weight, analyzing serum enzymes and lipids, and examining histological changes in heart tissues by light microscopy. In addition, mean survival time (MST), increase in life span (ILS) and survival (S) of the mice were determined.Results: DOX/LNE group reduced levels of serum enzymes and lowered damage to heart tissues relative to DOX-Sol group. The MST of the DOX/LNE group (80 ± 0.0 days) was significantly greater than that for DOX-Sol group (34.6 ± 8.9 days), while ILS of DOX/LNE (265.30 days) was higher than that of DOX-Sol (57.99 days) by 4.6-fold.Conclusion: Administration of DOX/LNE to EAC-bearing mice improves the efficacy of DOX and reduce its side effects on the heart.Keywords: Doxorubicine, Anti-tumor activity, Mean survival time, Heart histology, Nanoemulsion, Lipid profil

Assessing information and communication technology in surgical training, Sudan as example

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In Vitro Assessment of the Antineoplastic Activity of Doxorubicin Combined With Gemcitabine in a Nanoparticle

Objectives: The combination of 2 chemotherapeutic agents has been recommended in order to reduce their adverse side effects and potentiate their efficacy. The aim of the present study was to assess the antineoplastic activity of doxorubicin (DOX) combined with gemcitabine (GEM) in nanoemulsion (NE) against various cancer cells and to examine their adverse effects on the healthy human foreskin (HFS) cells. Materials and Methods: The physical characterizations of the drug-loaded NE formulations were determined by Zetasizer. The cytotoxicity of the drugs was evaluated by the thiazolyl blue tetrazolium bromide (MTT) assay while the mechanism of cell death was examined by light microscopy, nuclear staining with 4′,6-diamidino-2-phenylindole (DAPI) and ApopNexin FITC apoptosis detection kit. Results: The Zetasizer results demonstrated that the nanoparticle of the combination of 5 μM of DOX and GEM in NE (5DOX/5GEM-NE) has a particle size of 155.38 ± 3.08 nm with a polydispersity index of 0.02 ± 0.28 and a negative zeta potential of -7.70 ± 1.30 mV. The 5DOX/5GEM-NE has decreased the percentages of HeLa cervical cancer cell viabilities to 27.00 ±5.62%, but it has not considerably changed the percentages of HFS cell viabilities (97.06 ± 6.09%) when compared to the single treatments of DOX and GEM. According to the mechanism of cell death studies, 5DOX/5GEM-NE has induced apoptosis in HeLa cells without affecting the HFS cells. Conclusions: The present study proved that formulating DOX and GEM in NE has ameliorated the efficacy of DOX and GEM as anticancer drugs while reducing their adverse effects on the healthy cells

Hemoglobin production on stimulation of K562 human pluripotent leukemia cells

Programs pertaining to normal erythropoiesis, such as Hb synthesis, could be organized abnormally in the K562 blasts and perhaps also in other leukemic blast cells. Thus, an evaluation of the abnormal regulatory properties of these cell types may contribute to understand various aspects of the normal regulation of erythrocytic differentiation and Hb synthesis.peer-reviewe

Cinnamon oil nanoemulsion as a novel nanocarrier for bleomycin amplifies its apoptotic effect on SKOV-3 ovarian cancer cells

697-704Loading the chemotherapeutic agents in nanoemulsions system has recently gained attraction in medicine due to their ability to improve the drug’s efficacy and reduce its adverse effects. In this context, here, we loaded bleomycin (BLM) in nanoemulsion (NE) consisting of cinnamon oil in order to evaluate its antineoplastic effect on the SKOV-3 cells. The produced NE formulas were physically characterized by the zetasizer. The cytotoxic activities of BLM and NE formulas were examined by CCK-8 kit, Coomassie blue staining for the visualization of the morphological changes, Annexin V-FITC for identifying apoptosis and cell death detection ELISA plus kit for DNA fragmentation measurement. The average droplet diameter of the blank NE (450.90±1.57 nm) was increased when loaded with BLM (522.57±0.85 nm) while the magnitude of the negative zeta potential of the loaded formula (0.381±0.003 mV) was less than the blank NE (1.01±0.020 mV). The potential cytotoxicity of the BLM-NE was significantly greater than the toxicities of the free BLM and blank NE. The blank NE and BLM-NE have the greatest apoptotic effect and higher enrichment factor compared to free BLM. Loading BLM in NE based on cinnamon oil has considerably improved its efficacy as an anticancer drug on the SKOV-3 cells

Cinnamon oil nanoemulsion as a novel nanocarrier for bleomycin amplifies its apoptotic effect on SKOV-3 ovarian cancer cells

Loading the chemotherapeutic agents in nanoemulsions system has recently gained attraction in medicine due to their ability to improve the drug’s efficacy and reduce its adverse effects. In this context, here, we loaded bleomycin (BLM) in nanoemulsion (NE) consisting of cinnamon oil in order to evaluate its antineoplastic effect on the SKOV-3 cells. The produced NE formulas were physically characterized by the zetasizer. The cytotoxic activities of BLM and NE formulas were examined by CCK-8 kit, Coomassie blue staining for the visualization of the morphological changes, Annexin V-FITC for identifying apoptosis and cell death detection ELISA plus kit for DNA fragmentation measurement. The average droplet diameter of the blank NE (450.90±1.57 nm) was increased when loaded with BLM (522.57±0.85 nm) while the magnitude of the negative zeta potential of the loaded formula (0.381±0.003 mV) was less than the blank NE (1.01±0.020 mV). The potential cytotoxicity of the BLM-NE was significantly greater than the toxicities of the free BLM and blank NE. The blank NE and BLM-NE have the greatest apoptotic effect and higher enrichment factor compared to free BLM. Loading BLM in NE based on cinnamon oil has considerably improved its efficacy as an anticancer drug on the SKOV-3 cells

Lung Recruitment Assessed by Electrical Impedance Tomography (RECRUIT):A Multicenter Study of COVID-19 Acute Respiratory Distress Syndrome

Rationale: Defining lung recruitability is needed for safe positive end-expiratory pressure (PEEP) selection in mechanically ventilated patients. However, there is no simple bedside method including both assessment of recruitability and risks of overdistension as well as personalized PEEP titration. Objectives: To describe the range of recruitability using electrical impedance tomography (EIT), effects of PEEP on recruitability, respiratory mechanics and gas exchange, and a method to select optimal EIT-based PEEP. Methods: This is the analysis of patients with coronavirus disease (COVID-19) from an ongoing multicenter prospective physiological study including patients with moderate-severe acute respiratory distress syndrome of different causes. EIT, ventilator data, hemodynamics, and arterial blood gases were obtained during PEEP titration maneuvers. EIT-based optimal PEEP was defined as the crossing point of the overdistension and collapse curves during a decremental PEEP trial. Recruitability was defined as the amount of modifiable collapse when increasing PEEP from 6 to 24 cm H2O (DCollapse24–6). Patients were classified as low, medium, or high recruiters on the basis of tertiles of DCollapse24–6. Measurements and Main Results: In 108 patients with COVID-19, recruitability varied from 0.3% to 66.9% and was unrelated to acute respiratory distress syndrome severity. Median EIT-based PEEP differed between groups: 10 versus 13.5 versus 15.5 cm H2O for low versus medium versus high recruitability (P, 0.05). This approach assigned a different PEEP level from the highest compliance approach in 81% of patients. The protocol was well tolerated; in four patients, the PEEP level did not reach 24 cm H2O because of hemodynamic instability. Conclusions: Recruitability varies widely among patients with COVID-19. EIT allows personalizing PEEP setting as a compromise between recruitability and overdistension.</p