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Original Article  |  Open Access  |  14 Oct 2015

Synergistically curative effect of chicory extract and cisplatin against thioacetamide-induced hepatocellular carcinoma

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Hepatoma Res 2015;1:147-54.
10.4103/2394-5079.167376 |  © 2015 Hepatoma Research
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Abstract

Aim: Hepatocellular carcinoma (HCC) is the dominant form of primary liver cancer and is histologically and etiologically distinct from other forms of primary liver cancer. The objective of this study was to elucidate the synergistic effect and the role of chicory extract [inulin (IN)] as a chemo-sensitizer for cisplatin (CIS) treatment of HCC.

Methods: Five groups of rats were treated for 4 months. These groups consisted of the control group, a group receiving thioacetamide (TAA) (200 mg/kg b.w) in drinking water, a group injected intraperitoneally with a single dose of CIS (7.5 mg/kg b.w) in addition to TAA for 4 months, a group receiving oral doses of IN (10 mg/kg b.w) in addition to TAA for 4 months, a group injected intraperitoneally with a single dose of CIS (7.5 mg/kg b.w) and IN (10 mg/kg b.w) plus TAA for 4 months.

Results: The current data exhibited increment of serum and liver enzyme (alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, creatine kinase, and lactate dehydrogenase) activity, serum lipid profile levels (total lipids, total cholesterol, triglycerides, low density lipoprotein and very low density lipoprotein), and a significant increase in α-fetoprotein and bilirubin, accompanied with reduced total serum protein and albumin levels in a HCC rat model. Histopathologically, numerous alterations were detected in hepatic tissues of HCC rats, such as lymphocytic cell infiltration, damage of hepatocytes, dilated congested central vein with degenerated endothelial cells, and congested blood sinusoids in addition to Masson’s trichrome staining blue collagen fibers in hepatocytes and central vein indicating hepatic fibrosis. Treatment of HCC rats with CIS or IN improved such deleterious effects, where IN is more effective than cisplatin and the best effect can be observed in rats that received both cisplatin and IN.

Conclusion: It could be concluded that IN in chicory extract acts as a chemo-sensitizer to CIS for treatment in a HCC rat model.

Keywords

Chicory, cisplatin, hepatocellular carcinoma, inulin

Introduction

Cancer is one of the most anxiety-inducing diseases and it is presenting with further prolongation and increasing occurrence.[1] The most common and recurrent primary malignancy of the liver is recognized as hepatocellular carcinoma (HCC), a major malignancy worldwide and is increasingly associated with cancer-related death.[2] HCC represents the most common primary malignancy of the liver. According to epidemiological surveys, the prevalence of HCC ranks sixth among all cancers. Under normal physiologic conditions, the liver ensures homeostasis of lipid and lipoprotein metabolism.[1] Accordingly, hepatic cellular damage impairs liver function and can lead to alterations in lipid metabolism, and subsequently, may play a vital role in the development of HCC. Moreover, lipids are also involved in cellular signaling. In particular, lysophosphatidic acid, is a powerful cellular signaling agent and acts as a potent mitogenic molecule.[1] However, according to recent reports, the incidence of HCC has increased sharply in the last decade, especially in Egypt, where there has been a doubling of the incidence rate during the last 10 years. This sharp rise has been attributed to several factors including hepatitis B and C virus infections, endemic infections in the community as schistosomiasis, as well as environmental factors.[3] Cisplatin (CIS) is extensively used as a chemotherapeutic agent for the treatment of HCC. A major problem with CIS treatment of HCC is the development of CIS chemoresistance.[4] Revealing the underlying mechanism for the development of chemoresistance is indispensable for developing effective chemotherapeutic agents.[4] Cellular proliferation, an important prerequisite for tumorigenesis, imparts metabolic challenges.[5] The constant doubling of proteins and lipids requires uptake of nutrients in excess of that normally required. In addition to increasing nutrient uptake, proliferating cells also increase metabolic pathways to support biosynthesis.[6] Chicory (Cichorium intybus L.) is one of the most promising novel candidates among carbohydrates with potential for both nutrient and non-nutrient utilization. It has been implemented in folk medicine from North Africa to South Asia for several hundred years.[7] Fresh chicory typically contains 68% inulin (IN), 14% sucrose, 5% cellulose, 6% protein, 4% ash, and 3% other compounds, while dried chicory contains approximately 98% IN and 2% other compounds.[8] Chicory IN is a natural linear molecule of fructose with 9-(2-l) glycosidic linkages that are not digested in the upper part of the gastrointestinal tract but fermented in the cecocolon.[9] IN, a naturally-occurring fermentable chicory fructan, has been shown to stimulate the growth of bifidobacterium, which are regarded as beneficial strains in the colon and have been found to inhibit colon and liver carcinogenesis in laboratory animal models.[10] IN is fermentable dietary fiber, resistant to hydrolysis by pancreatic amylase and saccharidases in the upper gastrointestinal tract. Previous studies have demonstrated that IN is produced enzymatically from sucrose, and that supplementing IN to high fat diets for 12 weeks reduced body weight and serum and hepatic levels of triacylglycerols in rats.[11] IN in human nutrition is noted for its prebiotic effect, that is, the specific stimulation of growth and/or activity of a limited number of colonic bacteria beneficial to the host, as well as its inhibition in growth of pathogens and harmful microorganisms.[12] The combination of prebiotics and probiotics has given rise to so-called “synbiotics”, with promising healthy properties.[13] Experimental data demonstrates that IN and oligofructose affects processes and parameters involved in lipid metabolism, thus producing a beneficial effect on diseases related to lipid disorders such as atherosclerosis.[14]

Methods

Experimental animals

This study was performed on adult male Wistar rats; weighing 120-150 g. Rats were obtained from the Institute of Ophthalmic Disease Research (Cairo, Egypt). They were housed in stainless steel cages in an automatically illuminated and thermally controlled room (12 h light/dark cycle at 22-25 °C) at the Animal House, Faculty of Science, Mansoura University, Mansoura, Egypt. Rats were permitted an adequate standard diet (60 % ground corn meal, 15% round beans, 10% bran, 10% corn oil, 3% casein, 1% mineral mixture and 1% vitamin mixture) purchased from Meladco Feed Company (Aubor City, Cairo, Egypt), and given water ad libitum for an adaptation period of 1 week prior to the experimental work. This experimental study was approved by review board of Mansoura University.

Chemicals

Thioacetamide (TAA) and chicory extract (IN) were purchased from Sigma Chemical Co. (St. Louis, MO, USA). CIS was purchased from Tarshouby Pharmacy (Mansoura, Egypt).

Study design

After the acclimation period, rats were divided into five groups (6 rats each). The first group was a normal control group fed a normal diet without any treatment. The second group consisted of normal rats fed a normal diet while receiving TAA daily in drinking water at a dose of 200 mg/kg b.w for 4 months.[15] The third group consisted of normal rats fed a normal diet receiving CIS (7.5 mg/kg b.w) as a single intraperitoneal dose in addition to TAA for 4 months.[16] In the fourth group, rats orally received IN (10 mg/kg b.w) in addition to TAA for 4 months.[17] The fifth group of rats were administered CIS (7.5 mg/kg b.w) as a single intraperitoneal dose and IN orally (10 mg/kg b.w) in addition to TAA for 4 months.

Blood and liver sampling

At the end of the experimental period, rats were sacrificed by cervical dislocation and blood samples from each rat were collected into clean centrifuge tubes and centrifuged at 860 g for 20 min. The separated sera were frozen at -20 °C for further analysis. The rats were dissected and the livers were immediately excised, rinsed with ice-cold saline, blotted dry, and accurately weighed. They were then minced and homogenized in ice cold buffered saline (10% w/v). The homogenates were centrifuged at 860 g for 10 min at 4 °C. Finally, the supernatants were subjected to biochemical analysis. Other samples of the liver tissue were stored in 10% neutral formalin for histopathological studies.

Biochemical analysis

Total lipid, total cholesterol (TC), triglycerides (TGs) and high density lipoprotein cholesterol (HDL-C) levels were quantified using kits supplied by Spinreact S.A. (Sant Esteve de Bas, Spain).[18-21] Low density lipoprotein cholesterol (LDL-C) and very low density lipoprotein cholesterol (VLDL-C) levels were calculated according to the following equations, respectively: LDL-C = TC - HDL-C - TG/5[22] and VLDL-C = TG/5.[23]

Alpha-fetoprotein (AFP) levels in serum was estimated by the method described previously through kits purchased from Diagnostic Products Company (Los Angeles, CA,USA).[24] Total protein, albumin, and total bilirubin levels was quantified, using a kits from Bio-Diagnostic Co. (Dokki, Giza, Egypt) as described previously.[25-27] Aspartate transaminase (AST) and alanine transaminase (ALT) activity was quantified using kits supplied by Spinreact S.A. (Sant Esteve de Bas, Spain) according to Young,[28] and Belfield and Goldberg,[29] respectively. Alkaline phosphatase (ALP) activity was quantified using kits supplied by ABC (Cairo, Egypt) according to Belfield and Goldberg.[29] Creatine kinase (CK) and lactate dehydrogenase (LDH) activity was determined using kits supplied by Pinreact S.A. (Sant Esteve de Bas, Spain) according to Tietz[30] and Goldman et al.[31] respectively.

Histopathological studies

Liver specimens were carefully fixed in neutral formalin solution (10%), dehydrated in ascending grades of ethanol, cleared in xylene, embedded in a paraffin wax, sectioned at 5-7 µm, and stained with hematoxylin and eosin (HE). The stained sections were examined and photographed under a light microscope to detect its histopathological properties.[32] In addition to the routine H and E stain, Masson’s trichrome stains (a three-color staining protocol used in histology, where connective tissue is stained blue, nuclei are stained dark red/purple, and cytoplasm is stained red/pink) were employed for identification of collagen fibers, a good marker for various diseases such as fibrosis.[33]

Statistical analysis

Results were expressed as mean ± standard error of mean (SEM). Statistical significance was calculated using one-way analysis of variance followed by Duncan's multiple range test.[34] All of the statistical analyses were carried out with the use of SPSS 12.00 software. SPSS (Hong Kong) Ltd, Quarry Bay, Hong Kong. Differences were considered significant at P ≤ 0.05.

Results

As shown in Table 1, the obtained data showed a significant increase in the lipid profile of serum (TL, TC, TG, LDL-C and VLDL-C), AFP, and bilirubin, accompanied with significant decrease in total protein and albumin levels in HCC rats compared to the control group. In contrast, administration of IN or CIS to HCC rats showed significant amelioration of the tested parameters, in which IN is more effective than CIS. Moreover, the results shown in Table 2, recorded a significant increase in serum enzymes (AST, ALT, ALP, LDH and CK) activity accompanied with a significant decrease in liver enzyme (AST, ALT and ALP) activity in HCC rats compared to control group. However, administration of IN or CIS to HCC rats succeeded in inducing a significant improvement in these changes.

Table 1

Serum biochemical parameters in control and treated rat groups

ParametersAnimal groups
ControlTAATAA + CISTAA + INTAA + IN + CIS
Total lipids (mg/dL)452.52 ± 4.81a599.39 ± 6.86b550.39 ± 8.73c552.18 ± 8.54c504.37 ± 4.86d
Cholesterol (mg/dL)143.80 ± 1.63a203.50 ± 3.01b157.20 ± 2.55c168.50 ± 4.18d151.10 ± 1.74a
Triglyceride (mg/d L)121.25 ± 3.88a214.30 ± 5.49b148.42 ± 4.35c180.21 ± 1.98d130.33 ± 2.66e
HDL-C (mg/dL)48.50 ± 0.31a23.70 ± 1.86b29.90 ± 0.93c27.90 ± 0.74c39.50 ± 0.36d
LDL-C (mg/dL)71.05 ± 1.63a136.94 ± 3.01b97.62 ± 2.55c104.56 ± 4.18d85.54 ± 1.74e
VLDL-C (mg/dL)24.25 ± 0.08a42.86 ± 0.49b29.68 ± 0.35c36.04 ± 0.98d26.06 ± 0.16a
AFP (pg/mL)26.65 ± 1.30a59.46 ± 3.20b42.05 ± 1.07c36.58 ± 0.99d31.84 ± 0.65e
Tp (mg/dL)9.75 ± 0.42a3.95 ± 0.60b6.86 ± 0.43c7.15 ± 0.32c8.99 ± 0.17a
Albumin (mg/dL)5.28 ± 0.45a1.36 ± 0.13b2.70 ± 1.65c2.15 ± 0.09c3.81 ± 0.26d
Bilirubin (mg/g)1.30 ± 0.24a7.95 ± 0.92b3.90 ± 0.20c3.35 ± 0.20c2.71 ± 0.17c
Table 2

Serum and liver enzyme activity in control and treated rat groups

ParametersAnimal groups
ControlTAATAA + CISTAA + INTAA + IN + CIS
Serum AST (U/L)35.00 ± 3.20a200.76 ± 3.33b123.06 ± 1.19c118.81 ± 2.35c86.96 ± 2.23d
Serum ALT (U/L)56.53 ± 1.85a199.00 ± 2.89b96.16 ± 3.50c77.08 ± 1.80d60.53 ± 2.62a
Serum ALP (U/L)6.44 ± 0.30a11.77 ± 0.33b8.95 ± 0.24c8.14 ± 0.19c7.32 ± 0.39d
Serum CK (U/L)241.16 ± 0.97a482.81 ± 7.05b308.91 ± 4.39c278.28 ± 2.72d259.96 ± 1.04e
Serum LDH (U/L)218.33 ± 10.77a468.33 ± 9.36b297.83 ± 16.03c291.33 ± 0.18c279.50 ± 10.44c
Liver AST (U/g)8.94 ± 0.16a0.09 ± 0.42b2.21 ± 0.38c3.96 ± 0.15d5.43 ± 0.23e
Liver ALT (U/g)4.65 ± 0.31a0.63 ± 0.06b1.55 ± 0.15c1.93 ± 0.12c2.68 ± 0.35d
Liver ALP (U/g)50.97 ± 1.93a23.19 ± 1.43b36.11 ± 1.29c39.76 ± 0.51c48.35 ± 1.41a

Histopathological examination revealed that the liver of the control group was composed of classical hepatic lobules of normal central veins lined by endothelial cells, radiating hepatic cells, and hepatic sinusoids. Hepatocytes were polyhedral in shape, with sharply defined boundaries. They had an acidophilic cytoplasm and central rounded nuclei. Frequently seen were von Kupffer cells (Figure 1, pictures C and C1). The examination of the liver in HCC rat groups exhibited severe hepatic damages. Inflammation (lymphocytic cell infiltration), significant damage of hepatocytes, dilated congested central vein with degenerated endothelial cells, and congested blood sinusoids were observed [Figure 1, pictures HCC and HCC1]. HCC rats treated with CIS showed hepatocytes with little damage, dilated congested blood sinusoids, degenerated endothelial cells, and congested central veins [Figure 1, pictures HCC + CIS and HCC + CIS1]. However, HCC rats administered with IN showed normal hepatic lobules similar to the control group, indicating its hepatoprotective effect [Figure 1, pictures HCC + IN and HCC + IN1]. HCC rats treated with CIS and inulin maintained hepatic architecture, with minimal damage in lymphocytic cell infiltration [Figure 1, pictures HCC + CIS + IN and HCC + CIS + IN1]. These findings were evidenced by Masson’s trichrome staining blue collagen fibers in hepatocytes and the central vein as a good marker for more fibrous collagen deposition, developed extensive fibrosis in the periportal area, and damaged hepatocytes in HCC rats [Figure 2, picture HCC]. Whereas small fibrotic lesions were detected in liver of HCC+ IN, HCC + CIS and HCC + IN + CIS treated groups compared to the control rat group [Figure 2].

Synergistically curative effect of chicory extract and cisplatin against thioacetamide-induced hepatocellular carcinoma

Figure 1. Photomicrographs of liver sections stained with hematoxylin and eosin (HE, left row ×100, right row ×400). (C) Control rat showing normal hepatocytes architecture; (HCC) liver of HCC rat treated with CIS, showing damage hepatocytes with lymphocyte cells infi ltration; (HCC + CIS) liver of HCC rat treated with CIS showing congested central vein and blood sinusoids; (HCC + IN) liver of HCC rat that received IN similar to control group; (HCC + CIS + IN) liver of HCC treated with both CIS + IN showing maintained hepatic architecture, with minimal damage. C: control; IN: inulin; CIS: cisplatin; HCC: hepatocellular carcinoma; CV: central vein; HP: hepatocytes; BS: blood sinusoids; VHP: vascular hepatocytes; DBS: degenerated blood sinusoids; PV: portal vein; H: hepatocytes; white arrow: blood sinusoids; arrowhead: Kupffer cells; black arrow: endothelial cells; *Lymphocytic cell infi ltration

Synergistically curative effect of chicory extract and cisplatin against thioacetamide-induced hepatocellular carcinoma

Figure 2. Photomicrographs of liver sections stained with Masson's trichrome staining (×100). (C) Liver section of control rats, fi brosis, and collagen fi bers could not be seen; (HCC) liver section of HCC rat treated with thioacetamide, increased fi brosis, and blue collagen fi bers are seen among hepatocytes and central vein; (HCC + CIS) liver section of HCC rat treated with CIS, strands of blue collagen are less seen among hepatocytes; (HCC + IN) liver section of HCC rat that received IN, similar to the control rat group; (HCC + CIS + IN) liver section of HCC rat treated with both CIS + IN, blue collagen fi bers among hepatocytes are less seen. C: control; IN: inulin; CIS: cisplatin; HCC: hepatocellular carcinoma; CV: central vein; white arrow: a curved short arrow on the fi gure indicating blood sinusoids

Discussion

HCC is the most common and lethal of all cancers. There exists a diversity of dietary,[35] endogenous and environmental[36] stimuli that mediate hepatocarcinogenesis. Carcinogenesis may arise as a result of chemical or biological damage to normal cells in a multistep process that involves changes at the initiation level followed by promotion and progression, which leads to malignancy.[37]

The increment in the concentrations of serum total lipid, TC, TGs, and LDL-C with a reduction in the level of HDL-C in the TAA treated rats may reflect impairment of liver function, particularly in lipid metabolism.[38] The long-term regimen of TAA led to a significant decrease of hepatic markers; total protein and albumin levels indicating acute hepatocyte damage.[39] The alterations in lipid profiles and protein content in malignant tissues are of importance due to their effect on membrane integrity, fluidity, regulation, altered internal viscosity, and the internal chemical composition of cellular processes related to growth and cell survival.[40] Under normal physiological conditions, the liver ensures homeostasis of lipid and lipoprotein metabolism. HCC impairs this process, leading to alterations in lipid and lipoprotein patterns.[41] Many tumor markers have been described in the hope of finding a blood test for cancer, and some have found their way into widespread but indiscriminate clinical use. Classically, a marker is synthesized by the tumor and released into circulation, but it may also be produced by normal tissue in response to invasion by cancer cells. The ideal tumor marker should be produced by the tumor cell and be readily detectable in body fluids.[42] The continuing improvement of tumor-associated markers may help approaches in cancer treatment and diagnosis.[42] In addition, TAA-induced abnormal lipid synthesis or defective degradation of lipids is implicated in a pathological condition like cancer. Peroxidation of lipids in biomembranes and tissues causes the leakage of these lipids into circulation and consequently leads to hyperlipidemia. Hyperlipidemia has been shown to increase the risk of metastasis in several cancers.[43] Hepatoma is usually associated with hyperlipidemia as well as a notable decrease in the HDL fraction and an enormous increase in the VLDL and LDL fractions through resulting increase lipid peroxidation (LPO) during oxidative stress.[44] Furthermore, albumin in the human body transports essential fatty acids from adipose tissue, otherwise known as fat, to muscle tissue; it is made by the liver. Consequently, decreased albumin levels may be associated with liver disease.[45] Moreover, the increase in the level of AFP in HCC rats indicates a HCC.[46] It was reported that elevated serum concentrations of AFP can be observed in rats due to exposure to hepatotoxic agents or hepatocarcinogens and are frequently associated with HCC.[47] Its serum concentration can be used to confirm hepatocarcinoma and the diagnosis of tumor response to therapy. More than 90% of patients with hepatitis, cirrhosis, and hepatic cancer have increased serum AFP levels.[47]

Moreover, the observed alterations in serum AST, ALT, ALP, CK and LDH activity and total bilirubin levels are good indicators for hepatic injury resulting from cellular leakage and the loss in functional integrity of the cell membrane in liver.[48] Cellular damages are identified by increases in serum ALP, ALT, and AST levels in that these enzymes are in the cytoplasm and after cellular damage, enters blood circulation.[49] This is due to the increased permeability of the plasma membrane or cellular necrosis leading to leakage of the enzymes into the blood stream.[50]

ALP is used as a specific tumor marker during diagnosis in the early detection of cancer.[51] It is involved in the transport of metabolites across cell membranes, protein synthesis, secretory activities, and glycogen metabolism. It is a membrane bound enzyme, and alteration is likely to affect membrane permeability and induce derangement in the transport of metabolites.[52] The increase of ALP in HCC rat groups found in this study may be due to the disturbance in secretion activity or due to altered gene expression. The development of a tumor results in tissue damage that leads to the release of ALP into circulation and the liver tissues of the tumor-bearing animals. Elevation of ALP is one of the signs suggesting space-occupying lesions in the liver.[53] The rise in the activity of ALP in cancer-bearing animals may be due to a disturbance in secretory activity, the transport of metabolites, or may be due to the altered synthesis of certain enzymes in these conditions. In addition, GGT is over expressed in tumor cells.[54]

CIS is one of the most potent chemotherapy drugs widely used for cancer treatment. It was a keystone that triggered the interest in platinum (II) and other metal-containing compounds as potential anticancer drugs.[55] The related action of CIS activated nucleases and acid phosphatase lead not only to the breakdown of nucleic acids but also to the further dephosphorylation of mononucleotides, thereby leading to the acceleration of the processes of cell degeneration.[56] In histology, the main hallmark of HCC is its resemblance to the normal liver both in its plate-like growth and its cytology.[57]

HCC is usually a hypervascularized tumor showing different degrees of hepatocellular differentiation, ranging from well to poorly differentiated, based on the architectural and cytologic features. Different histological patterns may be seen: (1) the trabecular pattern of growth in which tumoral hepatocytes are arranged in plates of various thickness, separated by sinusoid vascular spaces; (2) the acinar or pseudoglandular pattern showing gland-like dilatation of the canaliculi between tumor cells (lumens can contain bile) or central degeneration of trabeculae (lumen containing mainlyfibrin); and (3) the compact or solid pattern composed of thick trabeculae compressed into a compact mass that causes liver damage.[57]

Cytologically, tumoral hepatocytes are polygonal, displaying an eosinophilic granular cytoplasm, rounded nuclei, and prominent nucleoli. The importance of cell pleomorphism varies according to the degree of differentiation. Several variants of HCC are described regarding the cytological aspect of the hepatocellular proliferation. The clear cell variant is made of clear cells that may contain fat or glycogen. In the scirrhous HCC, tumor cells are generally smaller in size, showing a granular eosinophilic cytoplasm, vesicular nuclei, and conspicuous nucleoli.[58] Sarcomatoid HCC is characterized by a sarcomatous-appearing component of spindle-shaped or giant tumor cells.[59]

In this study, IN has a prebiotic effect indicated by a decrease in the lipid profile (total lipids, cholesterol, triglycride, LDL-C , and VLDL-C) but increased HDL-C and AFP, as well as total protein and albumin. Experimental data demonstrate that IN affect processes and parameters involved in lipid metabolism and thus produces a beneficial effect on diseases related to lipid disorders such as reductions in TG, while showing modest reductions in total, LDL-C and VLDL particles[14] due to the inhibition of fatty acid synthesis.[60] The lipid-lowering action of this natural product may be mediated through the inhibition of hepatic cholesterol biosynthesis, increased faucal bile acid excretion, enhanced plasma lecithin, cholesterol acyltransferase activity, and the reduction of lipid absorption in the intestine.[61] The IN extracted from chicory contains some fructooligosaccharides (FOSs) in addition to polysaccharides, which may provide another mechanism of action.[62] It is well established that FOSs, besides their effect on the gastrointestinal tract, are also able to exert systemic effects by modifying the hepatic metabolism of lipids in many animal models.[63] Colonic fermentation of FOSs results in the synthesis of short-chain fatty acids, which influence lipid metabolism in humans.[64] In addition, IN is soluble in water and not hydrolyzed by human digestive enzymes; it is expected to behave like a soluble fiber and to have a hypolipidemic effect.[61,65] IN lowers serum cholesterol when added to the diet of rats, and may decrease cholesterol synthesis by inhibiting hydroxymethylglutaryl-CoA reductase. A mechanism of action of oligofructose was associated with the modulation of de novo cholesterol synthesis by short-chain fatty acids produced by gut microflora during the fermentation process.[66] The current study is in agreement with a previous study suggesting that chicory extract can minimize liver enzymes (AST, ALT, ALP, CK and LDH) activity. This finding may be attributed to chicory extracts having hepatoprotective and antioxidant effects that were effective in reducing serum liver enzymes towards or even below the normal value.[67,68] Regarding the present histopathological examination of the liver sections of HCC rats that received IN showed that the administration of IN protected rat livers from inflammation, necrosis, fibrosis ,and steatosis. This was indicated by the efficiency of chicory extract to retain the normalization of the hepatic tissue as neither necrosis nor fatty accumulation were observed and the central vein clearly appeared.[69]

In conclusion, the current data indicated the efficacy of chicory extract (IN) supplementation as an anti-HCC in addition to its ability as a chemo-sensitizer for CIS treatment. This is mediated by intracellular pathways, involving improvement of the alterations in liver functions, as well as other aspects of HCC, the suppression of oxidative stress, and modulation of antioxidant defense mechanisms. Thus, supplementation with chicory extract may help in the safe application of cancer technology in medicine as well as in many other aspects of everday life. Fractionation guided evaluation could help in the development of an ideal anticancer treatment in the near future.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

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OAE Style

Hassan HA, Serag HM, Abdel-Hamid NM, Amr MM. Synergistically curative effect of chicory extract and cisplatin against thioacetamide-induced hepatocellular carcinoma. Hepatoma Res 2015;1:147-54. http://dx.doi.org/10.4103/2394-5079.167376

AMA Style

Hassan HA, Serag HM, Abdel-Hamid NM, Amr MM. Synergistically curative effect of chicory extract and cisplatin against thioacetamide-induced hepatocellular carcinoma. Hepatoma Research. 2015; 1: 147-54. http://dx.doi.org/10.4103/2394-5079.167376

Chicago/Turabian Style

Hassan, Hanaa A., Hanaa M. Serag, Nabil M. Abdel-Hamid, Mahmoud M. Amr. 2015. "Synergistically curative effect of chicory extract and cisplatin against thioacetamide-induced hepatocellular carcinoma" Hepatoma Research. 1: 147-54. http://dx.doi.org/10.4103/2394-5079.167376

ACS Style

Hassan, HA.; Serag HM.; Abdel-Hamid NM.; Amr MM. Synergistically curative effect of chicory extract and cisplatin against thioacetamide-induced hepatocellular carcinoma. Hepatoma. Res. 2015, 1, 147-54. http://dx.doi.org/10.4103/2394-5079.167376

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