Park, Hyoung-Bae;Yang, Seung-Jung;Wei, Tung-Sheun;Park, Hye-Sun;Jeon, Sang-Yoon;Hong, Seok
Herbal Formula Science
/
v.14
no.1
/
pp.105-119
/
2006
Objectives & Methods : This present study was performed to investigate the effect of Hwadamtongrak-Tang extract (HTT) on the regulation of cerebral hemodynamics in terms of regional cerebral blood flow (rCBF) and mean arterial blood pressure (MABP)] in normal and cerebral ischemic rats. Also the effects of HTT on changes in local blood flow, inhibition of LD H activity in neuronal cells, and levels of cytokine production in the serum were determined in the ischemic rat model. The major findings are summarized below. Results : 1. HTT significantly increased rCBF in a dose-dependent manner, but MABP was not changed by HTT treatment. These results suggest that HTT may increase rCBF by dilating cerebral arterial diameter. 2. HTT-induced increase in rCBF was blocked by pretreatment with cyclooxygenase inhibitor indomethacin (IDN, 1 mg/kg, i.p.) and MABP was significantly increased by ID N. 3. Pretreatment of methylene blue $(MTB,\;10\;{\mu}g/kg,\;i.p.)$, an inhibitor of guanylate cyclase, significantly decreased both rCBP and MABP in HTT-treated rats. 4. HTT treatment significantly increased rCBP to a stable level during the period of cerebral reperfusion. 5. HTT significantly inhibited LD H activity in neuronal cells, suggesting a neuroprotection by HTT. 6. Serum interleukin $(IL)-1{\beta}$ and tumor necrosis factor $(TNF)-{\alpha}$ levels were significantly decreased in the femoral artery 1 hr after middle cerebral arterial occlusion in HTT-treated rats. IL-10 levels in the serum were significantly increased by HTT treatment whereas transforming growth factor $(TGF)-{\beta}$ levels were similar between HTT-treated and control groups. 7. Serum interleukin $(IL)-1{\beta}$ and tumor necrosis factor $(TNF)-{\alpha}$ levels were significantly decreased in the femoral artery 1 hr after reperfusion in HTT-treated rats. Serum IL-10 levels were significantly decreased in HTT-treated rats compared with the control group, and no significant changes in $(TGF)-{\beta}$ in the serum were observed by HTT treatment. Conclusions: The present data suggest that HTT may have an anti-ischemic effect via the improvement of cerebral hemodynamics and thus protect the brain from ischemic damage.
Objectives : Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) is a hair care product which is composed of ten plant extracts used in oriental medicine. This study was carried out to investigate the effects of Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) on hair regrowth and cytokine changes in a shaving model of C57BL/6 mice. Materials and Methods : Five-week-old mice were acclimated for 1 week at a temperature between $21-23^{\circ}C$, 40-60% relative humidity, and 12h of a light/dark cycle before beginning of the experiment. There were three experimental groups including 50% ethanol (EtOH, control), a positive control of 3% Minoxidil, and 30% Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) in 50% ethanol in 18 female mice. The test compounds were topically treated once a day over 12 days. The hair regrowth was photographically and histologically determined during the experimental period of 12 days. Revelation of EGF, $TGF-{\beta}1$ and IL-6 in hair follicle were also determined using immunohistochemistry. In addition to that, IL-6, $TNF-{\alpha}$, and $IL-1{\beta}$ in skin tissue were determined using enzyme-linked immunosorbent assay(ELISA). Results : Hair regrowth in 3% Minoxidil and Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) groups was promoted earlier and faster than the control group. Concentrations of hairs and thick-hair ratio in 3% Minoxidil and Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) groups were promoted than the control group. EGF was moderately positive in hair follicle of 3% Minoxidil and Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) groups, but negative in the control group. $TGF-{\beta}1$ was not significantly difference between the groups. IL-6 in hair follicle of Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) group was negative, but weakly positive in 3% Minoxidil and control group. IL-6 and $IL-1{\beta}$ in skin tissue were significantly decreased in Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) group, but there was not significantly decreased in 3% Minoxidil and control group. $TNF-{\alpha}$ in skin tissue was significantly decreased in 3% Minoxidil and Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) groups. Conclusions : These results suggest that Saengbal-eum-II($Sh{\bar{e}}ngf{\grave{a}}-y{\breve{i}}n-ll$) has hair growth promoting activity and it can be used for treatment of alopecia. And these effects relate to EGF revelation of hair follicle and a decrease IL-6, $TNF-{\alpha}$, and $IL-1{\beta}$ in skin tissue.
Nocardiopsis species produce bioactive compounds, such as antimicrobial and anti-cancer agents and toxins. However, no reports have described their anti-inflammatory and anti-fibrotic effects during nasal polyp (NP) formation. In this study, we investigated whether marine-derived bacterial Nocardiopsis sp. 13G027 exerts anti-inflammatory and anti-fibrotic effects on lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and transforming growth factor (TGF)-β1-induced NP-derived fibroblasts (NPDFs). Nitric oxide (NO) and prostaglandin E2 (PGE2) levels were analyzed. Extract from Nocardiopsis sp. 13G027 significantly inhibited the upregulation of NO and PGE2 in LPS-activated RAW 264.7 macrophages. The expression of mitogen-activated protein kinases (MAPKs) and protein kinase B (Akt/PKB) in LPS-induced RAW 264.7 macrophages was evaluated; smooth muscle alpha-actin (α-SMA), collagen type I (Col-1), and fibronectin also phosphorylated small mothers against decapentaplegic (SMAD) 2 and 3 in TGF-β1-stimulated NPDFs. The Nocardiopsis sp. 13G027 extract suppressed the phosphorylation of MAPKs and Akt and the DNA-binding activity of activator protein 1 (AP-1). The expression of pro-fibrotic components such as α-SMA, Col-1, fibronectin, and SMAD2/3 was inhibited in TGF-β1-exposed NPDFs. These findings suggest that Nocardiopsis sp. 13G027 has the potential to treat inflammatory disorders, such as NP formation.
Pizzolatti, Andre Luiz A.;Gaudig, Florian;Seitz, Daniel;Roesler, Carlos R.M.;Salmoria, Gean Vitor
Tissue Engineering and Regenerative Medicine
/
v.15
no.6
/
pp.781-791
/
2018
BACKGROUND: Glucosamine hydrochloride (GlcN HCl) has been shown to inhibit cell growth and matrix synthesis, but not with N-acetyl-glucosamine (GlcNAc) supplementation. This effect might be related to an inhibition of critical growth factors (GF), or to a different metabolization of the two glucosamine derivatives. The aim of the present study was to evaluate the synergy between GlcN HCl, GlcNAc, and GF on proliferation and cartilage matrix synthesis. METHOD: Bovine chondrocytes were cultivated in monolayers for 48 h and in three-dimensional (3D) chitosan scaffolds for 30 days in perfusion bioreactors. Serum-free (SF) medium was supplemented with either growth factors (GF) $TGF-{\beta}$ ($5ng\;mL^{-1}$) and IGF-I ($10ng\;mL^{-1}$), GlcN HCl or GlcNAc at 1mM each or both. Six groups were compared according to medium supplementation: (a) SF control; (b) SF + GlcN HCl; (c) SF + GlcNAc; (d) SF + GF; (e) SF + GF + GlcN HCl; and (f) SF + GF + GlcNAc. Cell proliferation, proteoglycan, collagen I (COL1), and collagen II (COL2) synthesis were evaluated. RESULTS: The two glucosamines showed opposite effects in monolayer culture: GlcN HCl significantly reduced proliferation and GlcNAc significantly augmented cellular metabolism. In the 30 days 3D culture, the GlcN HCl added to GF stimulated cell proliferation more than when compared to GF only, but the proteoglycan synthesis was smaller than GF. However, GlcNAc added to GF improved the cell proliferation and proteoglycan synthesis more than when compared to GF and GF/GlcN HCl. The synthesis of COL1 and COL2 was observed in all groups containing GF. CONCLUSION: GlcN HCl and GlcNAc increased cell growth and stimulated COL2 synthesis in long-time 3D culture. However, only GlcNAc added to GF improved proteoglycan synthesis.
Objectives : This study was performed to investigate the anti-fibrogenic effect of greater celandine on cultured rat hepatic stellate cells. Materials and Methods : Hepatic stellate cells (HSC-T6) were treated with various concentrations of greater celandine extract for 24, 48, and 72 hours. The extraction was done with distilled water. After the treatment, cell viability, proliferation, mRNA of the ${\alpha}SMA$, TIMP-1, TIMP-2, collagen I ${\alpha}$ 1, MMP-2, IL-6, TGF-${\beta}1$, PDGFr-${\beta}1$, Bcl-2, Bax, Bcl-xl, caspase-3, caspase-9 and the activities of SOD and catalase were measured by using MTT assay, BrdU assay, real-time PCR, superoxide dismutase assay and catalase assay. Results : The viability, proliferation, mRNA expression and synthesis of collagen of the hepatic stellate cells were inhibited as the concentration increased, which indicates the herb has an inhibitory effect on fibrogenesis of the liver by regulating the fibrosis associated genes in transcription. Conclusions : These results suggest that greater celandine would be beneficial in the treatment of fibrotic patients as well as for patients with chronic hepatitis.
Myostatin is a member of the transforming growth factor-${\beta}$(TGF-${\beta}$ super-family. It acts as a negative regulator for skeletal muscle growth. Myostatin mutations are characterized by a visible, generalized increase in muscle mass in double muscled cattle breeds. To understand the biochemistry and physiology of the Chinese Yellow bovine myostatin gene, we report here for the first time expression of the gene in Escherichia coli (E. coli). Primers of the myostatin gene of Chinese Yellow Cattle were designed on the basis of the reported bovine myostatin mRNA sequence (Gen-Bank Accession No. NM005259) and optimized for E. coli codon usage. XhoI and EcoRI restriction enzyme sites were incorporated in the primers, and then cloning vector and expression vector were constructed in a different host bacterium. The expressed protein had a molecule mass of about 16 kDa as determined by SDS-PAGE under reducing conditions. The expressed protein reacted specifically with myostatin monoclonal antibody on immunoblots. Our studies should lead to the investigation of the differences in myostatin genes of various cattle and could benefit human health and food animal agriculture.
Park, Soon-Sun;Kim, Kyoung-A;Lee, Seung-Youp;Lim, Shin-Saeng;Jeon, Young-Mi;Lee, Jeong-Chae
BMB Reports
/
v.45
no.10
/
pp.571-576
/
2012
Radiotherapy is considered to cause detrimental effects on bone tissue eventually increasing bone loss and fracture risk. However, there is a great controversy on the real effects of irradiation itself on osteoblasts, and the mechanisms by which irradiation affects osteoblast differentiation and mineralization are not completely understood. We explored how X-ray radiation influences differentiation and bone-specific gene expression in mouse calvarial osteoblasts. Irradiation at 2 Gy not only increased differentiation and mineralization of the cells, but also upregulated the expression of alkaline phosphatase, type I collagen, osteopontin, and osteocalcin at early stages of differentiation. However, irradiation at higher doses (>2 Gy) did not stimulate osteoblast differentiation, rather it suppressed DNA synthesis by the cells without a toxic effect. Additional experiments suggested that transforming growth factor-beta 1 and runt-transcription factor 2 play important roles in irradiation- stimulated bone differentiation by acting as upstream regulators of bone-specific markers.
Objective: In this study, the immunomodulatory activity of a mixture of wild Panax ginseng and red-mold rice extracts (MPR) on RAW 264.7 macrophage cells in the presence and absence of methotrexate (MTX), an anti-cancer drug, was investigated. Methods and Results: In the cell viability, MPR showed a significant cell proliferation and inhibited cell regression by red-mold rice (RMR) alone or MTX alone. MPR induced moderate increase in nitric oxide (NO) production. NO production and inducible nitric oxide synthase (iNOS) mRNA expression by LPS decreased after MPR treatment. In addition, MPR slightly induced COX-2 mRNA expression, but it did not affect the expression of COX-2 mRNA by LPS treatment. In RT-PCR analyses, MPR induced IL-$1{\alpha}$, IL-$1{\beta}$, IL-6, and TNF-$\alpha$ mRNA expression, but had no effect on IL-10 and TGF-$\beta$, regardless of MTX treatment. Furthermore, MPR did not interfere with the cytotoxicity of MTX against MCF-7 human breast carcinoma cells. Conclusions: MPR is efficacious in protecting against MTX-induced cell regression as a result of macrophage activation, resulting in induction of cytokine expression, implying that MPR could be considered an adjuvant in MTX-chemotherapy.
Isoflavones have been a central subject in natural phytoestrogens found in Leguminosae. Their effects on bone formation and remodeling are an important turning point in that they can act like estrogen by binding on estrogen receptors on target cell surface. We, therefore, believed that isoflavones may be applied in estrogen deficiency disease such as osteoporosis in terms of estrogen replacement therapy (ERT). As commonly known, osteoporosis is one of hormonal deficiency diseases, especially in menopausal women. (omitted)
Objective : Jaeumgeonbitang have been used in Korean medicine for many centuries as a therapuetic agent of vertigo. JAE was extract of Jaeumgeonbitang adding Evodiae Fructus. The effects of JAE on the cerebral blood flow and blood pressure is not known. This study was designed to investigate the effects of JAE on the ischemic crebral injuries. Method : We performed to investigate effects of JAE on the changes of regional cerebral blood flow(rCBF) and mean arterial blood pressure (MABP) in normal and ischemic rats, and further to determine the mechanism and cytokines production ($IL-1{\beta}$, $TNF-{\alpha}$, IL-10, $TGF-{\beta}$) of JAE. Results : In normal rats, JAE significantly increased rCBF and significantly decreased MABP in a dose-dependent manner. This result suggested that JAE significantly increased rCBF by dilating pial arterial diameter. Increase of JAE-induced rCBF was significantly inhibited by the pretreatment with indomethacin (1 mg/kg, i.p.), an inhibitor of cyclooxygenase, and was significantly inhibited by methylene blue ($10{\mu}g/kg$, i.p.), an inhibitor of guanylate cyclase. Decrease of JAE-induced MABP was significantly increased by the pretreatment with indomethacin (1 mg/kg, i.p.), an inhibitor of cyclooxygenase. So, these results suggested that the mechanism of JAE was mediated by cyclooxygenase. In ischemic rat, the rCBF was significantly and stably increased by JAE (10 mg/kg, i.p.) during the period of cerebral reperfusion, which contrasted with the findings of rapid and marked increase in Control group. In cytokine production of serum by drawing from femoral arterial blood at 1 hr after reperfusion, Sample group (JAE 10 mg/kg treated group) was significantly decreased $IL-1{\beta}$ and $TNF-{\alpha}$ production compared with Control group. In cytokine production of serum by drawing from femoral arterial blood at 1 hr after reperfusion, Sample group was significantly increased IL-10 production compared with Control group. Conclusion : These results suggested that JAE was significantly and stably increased regional cerebral blood flow by inhibited $IL-1{\beta}$ and $TNF-{\alpha}$ production, and increased IL-10 production.
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