共查询到20条相似文献,搜索用时 31 毫秒
1.
Aim of the study
The objectives of this study were to investigate the protective effect of the triterpenoid fractions from the rhizomes of Astilbe chinensis (Saxifragaceae) (ATF) on cyclophosphamide (CTX)-induced toxicity in tumor-bearing mice.Materials and methods
The mice inoculated with mouse sarcoma S180 cells were treated with saline or CTX alone, or co-treated with CTX and ATF. The blood, femur bone, and serum samples were collected for determination of the haematological and biochemical parameters and splenocytes were for assay of proliferation, the activity of natural killer (NK) cells, and production of interleukin-2 (IL-2).Results
ATF significantly increased the peripheral white blood cell (WBC) count and bone marrow cellularity (BMC) in CTX-treated S180-bearing mice. Increase of aspartate transanimase (AST), alanine transaminase (ALT), urea nitrogen (BUN), and creatinine in the serum of CTX-treated mice was significantly reversed by ATF. The lowered levels of splenocytes proliferation, NK cells activity, and IL-2 production from splenocytes in S180-bearing mice after CTX treatment were also increased by ATF administration.Conclusions
ATF provides significant protection against CTX-induced hematotoxicity, hepatotoxicity, nephrotoxicity, and immunotoxicity, and might be helpful in abrogation of CTX-induced toxicity during the chemotherapy. 相似文献2.
Hai-Shun Xu Yuan-Wen Wu Shi-Fang Xu Hong-Xiang Sun Feng-Yang Chen Li Yao 《Journal of ethnopharmacology》2009,125(2):310-317
Aim of the study
The roots of Actinidia eriantha Benth (Actinidiaceae) have been used for cancers in the Chinese folk medicine. The present study aimed at evaluating the antitumor potentials of the polysaccharides from the roots of Actinidia eriantha and elucidating their immunological mechanisms by determining the effects on the growth of tumor transplanted in mice and the immune response in tumor-bearing mice.Materials and methods
The total polysaccharide AEP and fours purified polysaccharides AEPA, AEPB, AEPC and AEPD were isolated and purified from the roots of Actinidia eriantha by hot water extraction, ethanol precipitation, dialysis and gel filtration. Their effects on the growth of mouse transplantable tumor, splenocyte proliferation, the activity of natural killer (NK) cells and cytotoxic T lymphocytes (CTL), production of cytokines from splenocytes, and serum antigen-specific antibody levels in tumor-bearing mice were measured.Results
AEP and four purified polysaccharides could not only significantly inhibit the growth of mouse transplantable tumor, but also remarkably promote splenocytes proliferation, NK cell and CTL activity, IL-2 and IFN-γ production from splenocytes, and serum antigen-specific antibody levels in tumor-bearing mice.Conclusions
The antitumor activity of AEP and four purified polysaccharides might be achieved by improving immune response, and the composition of the monosaccharides, uronic acid contents and molecular weight could affect their antitumor and immunomodulatory activity. 相似文献3.
4.
Monire Hajimoradi Zuhair Mohammad Hassan Ali Akbar Pourfathollah Saeed Daneshmandi Nafiseh Pakravan 《Journal of ethnopharmacology》2009
Ethnopharmacological relevance
Shark Liver Oil (SLO) is a traditional medicine that has been widely used in Scandinavian folk to augment the immune response in some immune-related diseases, especially as an anti-cancer agent.Aim of the study
The object of this project was to confirm the anti-cancer effect of SLO and the possible involving mechanisms.Materials and methods
Using delayed-type hypersensitivity (DTH) response in normal mice, the optimal dose for stimulation of cellular immunity was obtained and injected intraperitoneally to the tumor-bearing mice. Cytokine pattern of splenic MNCs was tested by ELISA. The percentage of CD4+ and CD8+ lymphocytes in tumor-infiltrating lymphocytes was determined by flow cytometry. Also the rate of increase in tumor volume measured.Results
Our findings indicated that SLO highly augments delayed-type hypersensitivity response against sheep Red Blood Cell (sRBC) in mice. Furthermore, intraperitoneal injection of SLO to tumor-bearing mice could increase T-cell infiltration into the tumor and lower the increasing rate of tumor's volume. Also, it changes the cytokine pattern of the splenic Mononuclear cells (MNCs) to Th1.Conclusion
Increase in IFN-γ (resulting in enhanced cellular immunity) and increase in especially CD8+ lymphocytes accompanied by a decrease in tumor size are among the signs of its anti-tumor effect. Accordingly, we suppose that SLO is a good candidate for further studies in cancer therapy. 相似文献5.
Jong Rhan Kim Jinhwan Choi Jiyoung Kim Heejeung Kim Heerim Kang Eun Hye Kim Jeong-Hwa Chang Yeong-Eun Kim Young Jin Choi Ki Won Lee Hyong Joo Lee 《Journal of ethnopharmacology》2014
Ethnopharmacological relevance
Ginseng and ginsenosides are frequently used in the treatment of chronic inflammatory diseases. Recently, 20-O-β-d-glucopyranosyl-20(S)-protopanaxadiol (GPD), the main metabolite of ginsenosides, was reported to have both anti-allergic and anti-pruritic effects. The immunomodulatory effects of GPD-fortified ginseng extract (GFGE) on atopic dermatitis (AD)-like symptoms in mice were investigated. This study was designed to investigate the preventive effect of GFGE on AD-like symptoms.Materials and methods
The effects of orally administered GFGE on Dermatophagoides farinae body extract (DFE)-induced AD-like symptoms in NC/Nga mice were assessed by analyzing dermatitis score, ear thickness, scratching time, skin histological changes, and serum level of macrophage-derived chemokine (MDC). In addition, splenocytes were isolated from the mice and stimulated with anti-CD3 and anti-CD28 monoclonal antibodies to produce cytokines.Results
Oral administration of GFGE significantly attenuated DFE-induced increases in dermatitis score, ear thickness, scratching time, and severity of skin lesions in NC/Nga mice. GFGE treatment also reduced level of MDC in serum, infiltration of eosinophils and mast cells in skin, and production of cytokines in splenocytes.Conclusions
These results suggest that GFGE might ameliorate DFE-induced AD-like symptoms and be an alternative therapeutic agent for the prevention of AD. 相似文献6.
Aim of the study
To further screen out the anti-tumor active compound of polysaccharides isolated from Solanum nigrum Linne (SNL-P), which had shown to have anti-cervical cancer and modulating properties, and evaluate the thymus protective effects of this active compound.Material and methods
SNL-P was separated and purified by column chromatography, and its anti-cervical cancer activity was evaluated by mice models injected of ascites U14 cells. Furthermore, the protective effect of fraction 1a of SNL-P (SNL-P1a) on the thymus tissue of tumor-bearing mice was evaluated by histological study and TUNEL staining. Finally, the protein expression of Bcl-2 and Bax gene were assayed by immunohistochemistry.Results
SNL-P1a has shown a marked inhibition effect on U14 cevical cancer, it restore the ratio of CD4+/CD8+ peripheral blood T-lymphocyte subpopulation. Histological study and TUNEL staining results showed that SNL-P1a protect thymus tissue against the onslaught of tumor by inhibiting thymus lymphocyte apoptosis, and immunohistochemistry assay displayed that SNL-P1a treatment could increase Bcl-2/Bax ratio in thymus lymphocytes of tumor-bearer, which might promote more thymus lymphocytes towards proliferation.Conclusion
SNL-P1a had significant growth inhibition effect on U14 cervical cancer and protective effect on thymus tissue of tumor-bearing mice. 相似文献7.
Debajyoti Mukherjee Tarak Nath KhatuaP. Venkatesh B.P. SahaPulok K. Mukherjee 《Journal of ethnopharmacology》2010
Ethnopharmacological relevance
Nelumbo nucifera Gaertn. (Nymphaeaceae) is a well-known aquatic plant which has been used for the treatment of several disorders including skin disease, cough, inflammation, fever and many other disorders.Aim of the study
To explore the immunomodulatory activity of extract of rhizome (NNRE) and seed (NNSE) of the plant.Materials and methods
The immunomodulatory activity of NNRE and NNSE was evaluated using various in vivo models including the total and differential leukocyte count (TLC and DLC), nitroblue-tetrazolium reduction (NBT) test, neutrophil adhesion test, phagocytic response and delayed type hypersensitivity (DTH) reaction. Sheep red blood cells (SRBC, 5 × 109 cells/ml) were used to immunize the animals. NNRE and NNSE at the doses of 100 and 300 mg/kg were administrated.Result
The TLC and lymphocyte count increased significantly but the neutrophil count was decreased for NNRE and NNSE treated groups compared to the control. A dose-dependent potentiation of DTH reaction induced by SRBC was observed from the extracts. The percentage of neutrophil adhesion to the nylon fiber was increased in NNRE treated groups (63.22 and 62.91%) compared to the NNSE treated group (54.86 and 54.23%). A potential phagocytic response was seen on treatment of the extracts, and significant changes were observed in the formation of formazone crystals.Conclusion
This finding suggests that the extract of rhizome and seed Nelumbo nucifera stimulate defense system by modulating several immunological parameters. 相似文献8.
Alonso-Castro AJ Ortiz-Sánchez E Domínguez F López-Toledo G Chávez M Ortiz-Tello Ade J García-Carrancá A 《Journal of ethnopharmacology》2012,140(2):438-442
Ethnopharmagological relevance
Medicinal plants are an important source of antitumor compounds. This study evaluated the acute toxicity in mice, as well as the cytotoxic and antitumoral effects of methanolic extracts of Croton lechleri leaves (CLE).Materials and methods
The cytotoxicity of CLE on human cancer cell lines and human non-cancerous cells was evaluated using the MTT and apoptosis assays. Apoptosis induced by CLE on human cancer cell lines was determined using flow cytometry with annexin-Alexa 488/propidium iodide. The acute toxicity in mice was performed according to the Lorke procedure. Different doses of CLE were injected intraperitoneally daily into athymic mice bearing tumor during 18 days. The growth and weight of tumors was measured.Results
CLE showed low IC50 values on HeLa (17 μg/ml) cells but lack toxic effects against human normal cells. Induction of cell death in HeLa cells by CLE was confirmed by an increase of apoptosis (Annexin/PI) by 30% compared to untreated cells. The LD50 was 356 mg/kg by intraperitoneal route (i.p.) and 500 mg/kg by oral route. CLE administrated at 1, 10 and 50 mg/kg i.p. inhibited the tumor growth by 38%, 48% and 59%, respectively, in mice bearing HeLa tumor.Conclusion
Croton lechleri shows moderate toxic effects in vivo, exerts cytotoxic effects on HeLa cells and has antitumor effects in mice bearing HeLa tumor. 相似文献9.
Alonso-Castro AJ Ortiz-Sánchez E Domínguez F Arana-Argáez V Juárez-Vázquez Mdel C Chávez M Carranza-Álvarez C Gaspar-Ramírez O Espinosa-Reyes G López-Toledo G Ortiz-Andrade R García-Carrancá A 《Journal of ethnopharmacology》2012,141(3):888-894
Ethnopharmacological relevance
Medicinal plants are an important source of antitumor compounds. This study evaluated the acute toxicity in vitro and in vivo, as well as the cytotoxic, antitumor and immunomodulatory effects of ethanolic extracts of Justicia spicigera leaves (JSE).Materials and methods
The in vitro and in vivo toxicity of JSE was evaluated with comet assay in peripheral blood mononuclear cells (PBMC) and acute toxicity in mice, according to the Lorke procedure, respectively. The apoptotic effect of JSE on human cancer cells and human noncancerous cells was evaluated using flow cytometry with annexin-Alexa 488/propidium iodide. Also, different doses of JSE were injected intraperitoneally daily into athymic mice bearing tumors of HeLa cells during 18 days. The growth and weight of tumors were measured. The in vitro immunomodulatory effects of JSE were evaluated estimating the effects of JSE on the phagocytosis of the yeast Saccharomyces cerevisiae, NO production and H2O2 release in macrophages, as well as the proliferation of splenocytes and NK activity.Results
The comet assay showed that only JSE tested at 200 and 1000 μg/ml induced a significantly DNA damage in PBMC, compared to untreated cells, whereas the LD50 was >5000 mg/kg by intraperitoneal route (i.p.) and by oral route. JSE showed pro-apoptotic (Annexin/PI) effects by 35% against HeLa cells, but lack toxic effects against human normal cells.JSE administrated at 10, 50 and 100 mg/kg i.p. inhibited the tumor growth by 28%, 41% and 53%, respectively, in mice bearing HeLa tumor. JSE stimulated, in a concentration dependent manner, the phagocytosis of Saccharomyces cerevisiae yeasts, the NO production and H2O2 release by human differentiated macrophages. In addition, JSE stimulated the proliferation of murine splenocytes and induced the NK cell activity.Conclusion
Justicia spicigera shows low toxic effects in vitro and in vivo, exerts apoptotic effects on HeLa cells, has antitumor effects in mice bearing HeLa tumor and induces immunomodulatory activities in vitro. 相似文献10.
Dolai N Karmakar I Suresh Kumar RB Kar B Bala A Haldar PK 《Journal of ethnopharmacology》2012,142(3):865-870
Ethnopharmacological relevance
Anthocephalus cadamba (Roxb.) Miq. (Family: Rubiaceae) is commonly known as “Kadamba” in Sanskrit and Hindi in India. Various parts of this plant have been used as a folk medicine for the treatment of tumor, wound healing, inflammation and as a hypoglycemic agent.Aim of study
The purpose of this investigation was to evaluate the antitumor activity and antioxidant status of defatted methanol extract of A. cadamba (MEAC) on Ehrlich ascites carcinoma (EAC) treated mice.Materials and methods
In vitro cytotoxicity assay has been evaluated by using the trypan blue method. The determination of in vivo antitumor activity was performed by using different EAC cells (2×106 cells, i.p.) inoculated mice groups (n=12). The groups were treated for 9 consecutive days with MEAC at the doses of 200 and 400 mg/kg b.w. respectively. After 24 h of last dose and 18 h of fasting, half of the mice were sacrificed and the rest were kept alive for assessment of increase in life span. The antitumor potential of MEAC was assessed by evaluating tumor volume, viable and nonviable tumor cell count, tumor weight, hematological parameters and biochemical estimations. Furthermore, antioxidant parameters were assayed by estimating liver and kidney tissue enzymes.Results
MEAC showed direct cytotoxicity on EAC cell line in a dose dependant manner. MEAC exhibited significant (P<0.01) decrease in the tumor volume, viable cell count, tumor weight and elevated the life span of EAC tumor bearing mice. The hematological profile, biochemical estimations and tissue antioxidant assay were reverted to normal level in MEAC treated mice.Conclusion
Experimental results revealed that MEAC possesses potent antitumor and antioxidant properties. Further research is going on to find out the active principle(s) of MEAC for better understanding of mechanism of its antitumor and antioxidant activity. 相似文献11.
Aims of the study
Kanglaite (KLT) is a useful antitumor drug with proven effects when combined with chemotherapy, radiotherapy or surgery. We hypothesize that KLT has antitumor activity and immunomodulatory effects in Lewis lung carcinoma.Materials and methods
C57BL/6 mice with Lewis lung carcinoma were divided into four groups: the control group (C), cisplatin group (1 mg/kg, DDP), low KLT group (6.25 ml/kg body weight [L]), and high KLT group (12.5 ml/kg body weight [H]). T cell proliferation was determined by the MTT assay. Nuclear factor-kappa B (NF-κB), inhibitor kappa B alpha (IκBα), IκB kinase (IKK) and epidermal growth factor receptor (EGFR) levels were measured by western blotting. An enzyme-linked immunosorbent assay was used to analyze the expression of interleukin-2 (IL-2).Results
Intraperitoneal KLT significantly inhibited the growth of Lewis lung carcinoma, and the spleen index was significantly higher in the L and H groups than in the C group. KLT stimulated T cell proliferation in a dose-dependent manner. Treatment with KLT at either 6.25 or 12.5 ml/kg decreased the level of NF-κB in the nucleus in a dose-dependent manner, and KLT markedly decreased the expression of IκBα, IKK and EGFR in the cytoplasm of tumor cells and overall. IL-2 was significantly increased in the supernatant of splenocytes in the H group.Conclusions
These results demonstrate that KLT has pronounced antitumor and immunostimulatory activities in C57BL/6 mice with Lewis lung carcinoma. These may affect the regulation of NF-κB/IκB expression, in addition to cytokines such as IL-2 and EGFR. Further work needs to investigate the relevant signaling pathway effects, but our findings suggest that KLT may be a promising antitumor drug for clinical use. 相似文献12.
Maria del Carmen Juárez-Vázquez Angel Josabad Alonso-Castro Alejandro García-Carrancá 《Journal of ethnopharmacology》2013
Ethnopharmacological relevance
Justicia spicigera is a plant used as immunostimulatory in Mexican traditional medicine. Recently, we showed that Justicia spicigera extracts exerted immunostimulatory effects and the major component of this extract was kaempferitrin (KM). This work shows a correlation between the medical traditional use of Justicia spicigera and kaempferitrin, its active compound.Materials and methods
The in vitro immunostimulatory effects of KM were evaluated on the proliferation of murine splenocytes and macrophages, and human peripheral blood mononuclear cells (PBMC). The effects of KM on NO production, lysosomal enzyme activity and neutral red uptake were assayed in murine macrophages RAW 264.7. The effects of KM on the NK cell activity were also assayed.Results
KM at 25 μM, the highest concentration tested, increased the proliferation of murine macrophages (23%) and splenocytes (17%), and human PBMC (24%) in the absence of lipopolysaccharides (LPS), compared to untreated cells. KM also stimulated the pinocytosis (25%) and lysosomal enzyme activity (57%) in murine macrophages with a similar potency than LPS 1 μg/ml. In addition, KM induced the NK cell activity (11%).Conclusion
KM exerts immunostimulatory effects on immune responses mediated by splenocytes, macrophages, PBMC and NK cells. 相似文献13.
Asis Bala Biswakanth KarPallab K. Haldar Upal K. MazumderSamit Bera 《Journal of ethnopharmacology》2010
Ethnopharmacological relevance
The plant Cleome gynandra L. (Capparidaceae), is commonly known as ‘Hurhur’and ‘Karaila’ in India and ‘Cat's whiskers’ in English. Traditionally the whole plant is used in the treatment of tumor, anti-inflammatory and lysosomal stability actions.Aim of study
The objective of present study is to explore the anticancer activity of the methanol extract of the Cleome gynandra in Swiss albino mice against Ehrlich Ascites Carcinoma (EAC) cell line.Materials and methods
Anticancer activity of methanol extract of Cleome gynandra (MECG) was evaluated in Swiss albino mice against Ehrlich Ascites Carcinoma (EAC) cell line at the doses of 200 and 400 mg/kg body weight intraperitoneally. MECG was administered for nine consecutive days. Twenty-four hours of last dose and 18 h of fasting, the mice were sacrificed and antitumor effect of MECG assessed by evaluating tumor volume, viable and nonviable tumor cell count, tumor weight and hematological parameters of EAC bearing host.Results
MECG showed significant decrease in (p < 0.01) tumor volume, viable cell count, tumor weight and elevated the life span of EAC tumor bearing mice. Hematological profile such as RBC, hemoglobin, WBC and lymphocyte count reverted to normal level in MECG treated mice.Conclusion
From the result it was showed that the extract has potent dose dependent anticancer activity and that is comparable to that of 5-fluorouracil. 相似文献14.
Aim of the study
Traditional Chinese medicine herbs (TCMHs) are used in medicines as well as in daily dietary supplements in Asia. In this study, we employed pNF-κB-Luc or pIFN-γ-Luc and BALB/c mice peritoneal macrophages or splenocytes to investigate both the immune and inflammatory effects of six selected plant species.Materials and Methods
Specifically, we used ethyl acetate fractions of Astragalus membranaceus (Fisch.) Bunge var. mongholicus (Bunge) Hsiao (Fabaceae) (AM), Andrographis paniculata (Burm. f.) Nees (Acanthaceae) (AP), Angelica sinensis (Oliv.) Diels (Apiaceae) (AS), Eucommia ulmodes Oliv. (Eucommiaceae) leaves (EU leaves), Isatis indigotica Fort. (Brassicaceae) (II) and Morus alba L. (Moraceae) (MA).Results
We found that ethyl acetate fractions of AP, AS and MA significantly decreased NF-κB luciferase activity and also the secretion of NO and PGE2 in LPS/IFN-γ stimulated mouse peritoneal macrophages (p < 0.05). In contrast, they did not affect IFN-γ luciferase activity or IFN-γ production in concanavalin A (Con A)-activated mouse splenocytes. Our results indicated that the anti-inflammatory properties of these plant extracts might be resulted from the inhibition of pro-inflammatory mediators (e.g., NO and PGE2), at least in part via suppression of a signaling pathway such as NF-κB.Conclusions
Collectively, we have found that three potent bioactive TCMH species exerted significant NF-κB inhibitory activity and acted in a cell type dependent fashion. 相似文献15.
Aim of the study
The ethanol extract (LF) of Ligularia fischeri var. spiciformis (leaf) has been evaluated for antinociceptive and anti-inflammatory activities in mice.Materials and Methods
Analgesic and anti-inflammatory activities were studied by measuring nociception induced by formalin, acetic acid and hot-plate, and inflammation induced by carrageenan, formalin, and arachidonic acid.Results
The acute treatment of mice with LF at doses of 100 and 200 mg/kg, by oral administration, produced a significant antinociceptive effect in the acetic acid-induced writhing, formalin-induced pain licking and hot-plate-induced pain. Also, the LF significantly inhibited both carrageenan- and formalin-induced inflammation as well as arachidonic acid-induced ear edema in mice.Conclusions
These inhibitions were statistically significant (P < 0.05). Thus, our investigation suggests a potential benefit of Ligularia fischeri in treating conditions associated with inflammatory pain. 相似文献16.
Alonso-Castro AJ Juárez-Vázquez Mdel C Domínguez F González-Sánchez I Estrada-Castillón E López-Toledo G Chávez M Cerbón MA García-Carranca A 《Journal of ethnopharmacology》2012,142(3):857-864
Ethnopharmacological relevance
Phoradendron serotinum is commonly used in Mexican traditional medicine for the empirical treatment of cancer. However, there are no studies regarding the antitumoral or immunomodulatory activities of Phoradendron serotinum.Materials and methods
The in vivo toxicity of ethanolic extracts of Phoradendron serotinum (PSE) was evaluated in mice according to the Lorke procedure. The in vitro immunomodulatory effects of PSE were evaluated estimating the effects of PSE on the pinocytosis, NO production and lysosomal enzyme activity in murine macrophages RAW 264.7. The effects of PSE on the proliferation of murine splenocytes and NK cell activity were also assayed. The cytotoxic effects on TC-1 (lung murine cancer cells) were evaluated using the MTT assay, whereas the apoptotic effect of PSE on TC-1 cells was evaluated using TUNEL assay. Also, different doses of PSE were injected intraperitoneally daily into C57BL/6 mice bearing tumors of TC-1 cells during 25 days. The growth and weight of tumors was measured. In addition, the levels of IL-2, IL-6, IL-12, IL-23 and IFN-γ in murine serum and supernatants of K562 cell—murine splenocyte cocultures were measured.Results
PSE stimulated the proliferation, pinocytosis and lysosomal enzyme activity in murine macrophages with a similar potency than lypopolisaccharides 1 μg/ml. In addition, PSE stimulated the proliferation of murine splenocytes and induced the NK cell activity. PSE showed cytotoxic (IC50 = 1.9 μg/ml) and apoptotic effects against TC-1 cells. The LD50 was 125 mg/kg by intraperitoneal route (i.p.) and 375 mg/kg by oral route. PSE administrated at 1, 5 and 10 mg/kg i.p. inhibited the tumor growth by 18%, 40% and 69%, respectively, in mice bearing TC-1 tumor. PSE increased the in vitro and in vivo release of IL-2, IL-6 and IFN-γ but lacked effect on IL-12 and IL-23 release.Conclusions
Phoradendron serotinum shows moderate toxic effects in vivo, exerts cytotoxic and apoptotic effects on TC-1 cells. Phoradendron serotinum also has antitumor effects in mice bearing TC-1 tumor and induces immunomodulatory activities in vivo. The results suggest that antitumoral effects of PSE are related with the production of immunity-related cytokines. 相似文献17.
Moon Hwa Kwak Ji Eun Kim In Sik Hwang Young Ju Lee Bum Su An Jin Tae Hong Sang Hak Lee Dae Youn Hwang 《Journal of ethnopharmacology》2013
Ethnopharmacological relevance
A variety of previous pharmacological studies have suggested that Liriope platyphylla may exert beneficial biological effects on inflammation, diabetes, neurodegenerative disorder, obesity, and atopic dermatitis (AD).Aim of the study
The therapeutic effect of aqueous extract of Liriope platyphylla (AEtLP) on AD was quantified using the luciferase report system in IL-4/Luc/CNS-1 transgenic (Tg) mice.Materials and methods
Alteration of the luciferase signal was quantified in IL-4/Luc/CNS-1 Tg mice co-treated with phthalic anhydride (PA) and AEtLP for 2 weeks using the IVIS imaging system. Phenotypes of AD were assessed by ear thickness analysis, measurement of immune-related organ weights, ELISA, and histological and pathological analysis in Tg mice.Results
A strong luciferase signal was detected in the abdominal region of IL-4/Luc/CNS-1 Tg mice treated with only PA. However, this signal was significantly reduced in IL-4/Luc/CNS-1 Tg mice co-treated with PA+AEtLP in an AEtLP concentration-dependent manner. Especially, three organs, the thymus, pancreas, and submandibular lymph node (SL), showed a high signal response to PA treatment. Furthermore, to verify whether or not alteration of the luciferase signal is associated with AD, these disease response phenotypes were measured in the same group of mice. Common allergenic responses including increases in ear thickness, lymph node weight, IgE concentration, and infiltrated mast cells were detected in IL-4/Luc/CNS-1 Tg mice treated with PA. However, these responses were dramatically decreased by AEtLP treatment for 2 weeks.Conclusion
These results indicate that the luciferase signal may successfully reflect the therapeutic effects of AEtLP in IL-4/Luc/CNS-1 Tg mice. Further, we suggest additional evidence that Liriope platyphylla may be considered as an effective therapeutic drug for the treatment of AD. 相似文献18.
Ethnopharmacological relevance
In the folk medicine Humulus lupulus L. (hops) is mainly recommended as a mild sedative with antispasmodic and digestive properties. It is also reputed to exert an anaphrodisiac effect but it is still lacking the experimental evidence of this activity.Aim of the study
To evaluate the influence of Humulus lupulus extract on sexual behavior of both naïve and sexually potent male rats; thereafter to investigate the role of 8-prenylnarigenin (8-PN) in the effect displayed by the hop extract.Materials and methods
Sprague–Dawley male rats both naïve and sexually potent were acutely administered with the hop extract dosed at 5, 10, 25 and 50 mg/kg. In addition the extract was administered daily for 10 consecutive days at the dose of 0.25 mg/kg/day in sexually potent animals. The pure compound 8-PN was acutely administered in naïve rats at the dosages of 5, 12.5 and 25 μg/kg. All the animals were screened for their sexual behavior manifestation during the mating test.Results
In naïve rats the acute administration of Humulus lupulus extract at the doses of 25 and 50 mg/kg significantly reduced the percentage of mounting and ejaculating animals, in comparison to vehicle controls. The other parameters recorded during the mating test were not affected by the hop extract. In sexually potent rats nor the acute neither the repeated administration of the extract modified their copulatory behavior.The pure compound 8-PN failed to influence male sexual behavior of naïve rats.Conclusion
Humulus lupulus extract exerted an anaphrodisiac effect only in naïve rats by inhibiting their mounting and ejaculating behavior. The presence of 8-PN in the extract could be only partially involved in the observed anaphrodisiac effect. 相似文献19.
Dan-Fei Huang Ming-Yong Xie Jun-Yi Yin Shao-Ping Nie Yong-Fu Tang Xiao-Mei Xie Chao Zhou 《Journal of ethnopharmacology》2009