No abstract available.
Periosteum* ; Transforming Growth Factors*

No abstract available.
Transforming Growth Factor alpha* ; Transforming Growth Factors*

No abstract available.
Chitosan* ; Osteoblasts* ; Transforming Growth Factor beta1 ; Transforming Growth Factors*

No abstract available.
Arthritis* ; Osteoarthritis* ; Transforming Growth Factor beta* ; Transforming Growth Factors*

Transforming growth factor (TGF)-β is a group of cytokines with anti-inflammatory effects in the TGF family, which participates in the development of stress and depression-related mechanisms, and plays roles in the regulation of inflammatory response in depression and the recovery of various cytokine imbalances. The core symptoms of depression is associated with TGF-β level, and the psychological symptoms of depression are related to TGF-β gene polymorphism. Various antidepressants may up-regulate TGF-β level through the complex interaction between neurotransmitters and inflammatory factors, inhibiting inflammatory response and regulating cytokine imbalance to improve depressive symptoms. Studies have shown that recombinant TGF-β1 protein has beneficial effects in mouse depression models, indicating TGF-β1 might be a potential therapeutic target for depression and nasal sprays having the advantage of being fast acting delivery method. This article reviews the research progress on dynamic changes of TGF-β level before and after depression treatment and the application of TGF-β level as an indicator for the improvement of depressive symptoms. We provide ideas for the development of new antidepressants and for the evaluation of the treatment efficacy in depression.
Animals ; Mice ; Transforming Growth Factor beta/metabolism* ; Transforming Growth Factor beta1 ; Depression ; Cytokines ; Antidepressive Agents/therapeutic use* ; Transforming Growth Factors

To investigate whether transforming growth factor alpha (TGF alpha) treatment of human ovarian cancer cells was associated with the induction of c-myc protooncogene, the expression of this gene in NIH:OVCAR-3 cells was examined. TGF alpha induced increase in c-myc mRNA level, with a peak after 1 h of treatment; this stimulation was dose-dependent, with an optimal concentration of 5 ng/ml TGF alpha. Its primary action is probably at the transcription level since the half-life of c-myc mRNA measured in the presence of actinomycin D was not modified by TGF alpha treatment. In addition, TGF alpha stimulation of c-myc mRNA did not require protein synthesis since it was not suppressed by cycloheximide treatment. Antisense phosphorothioate oligonucleotide to c-myc specifically inhibited the TGF alpha-stimulated c-Myc protein expression and growth of NIH:OVCAR-3 cells. Our results indicate that induction of c-myc expression by TGF alpha plays an important role in the growth of NIH:OVCAR-3 cells.
Cycloheximide ; Dactinomycin ; Half-Life ; Humans* ; Ovarian Neoplasms* ; RNA, Messenger ; Transforming Growth Factor alpha ; Transforming Growth Factors*

BACKGROUND: Transforming growth factor-(TGF-alpha) is a acidic, heat-stable, 50 amino acid polypeptide which is related to cellular proliferation, malignant transformation, and angiogenesis. There are many similarities between keratoacanthoma(KA) and squamous cell carcinoma(SCC). So, it is often difficult to differentiate keratoacanthoma and squamous cell carcinoma, clinically and histologically. OBJECTIVE: Our purpose was to examine the patterns of TGF-alpha expression on KA and SCC using immunohistochemical staining and to evaluate the usefulness of the immunohistochemical staining with antihuman TGF-alpha antibody on differentiation between KA and SCC. METHODS: Formalin-fixed, paraffin-embedded specimens that had confirmed to KA(n=12) or SCC(n=10) were performed by immunoperoxidase staining with monoclonal antihuman TGF-alpha antibody RESULTS: All of KA dmonstrated a diffuse pattern within tumor lobules, but, at the peripheral rim of cells, showed unstained pattern. In contrast to KA, 40% of the SCC had patchy infiltration within tumor lobules, and 60% of the SCC had diffuse pattern which was similar to the pattern found in KA. All of SCC showed well-defined staining at peripheral cells. CONCLUSION: Immunohistochemical staining with antihuman TGF-alpha antibody could be used on differentiation between KA and SCC.
Carcinoma, Squamous Cell* ; Cell Proliferation ; Keratoacanthoma* ; Transforming Growth Factor alpha ; Transforming Growth Factors*

BACKGROUND: Transforming growth factor-(TGF-alpha) is a acidic, heat-stable, 50 amino acid polypeptide which is related to cellular proliferation, malignant transformation, and angiogenesis. There are many similarities between keratoacanthoma(KA) and squamous cell carcinoma(SCC). So, it is often difficult to differentiate keratoacanthoma and squamous cell carcinoma, clinically and histologically. OBJECTIVE: Our purpose was to examine the patterns of TGF-alpha expression on KA and SCC using immunohistochemical staining and to evaluate the usefulness of the immunohistochemical staining with antihuman TGF-alpha antibody on differentiation between KA and SCC. METHODS: Formalin-fixed, paraffin-embedded specimens that had confirmed to KA(n=12) or SCC(n=10) were performed by immunoperoxidase staining with monoclonal antihuman TGF-alpha antibody RESULTS: All of KA dmonstrated a diffuse pattern within tumor lobules, but, at the peripheral rim of cells, showed unstained pattern. In contrast to KA, 40% of the SCC had patchy infiltration within tumor lobules, and 60% of the SCC had diffuse pattern which was similar to the pattern found in KA. All of SCC showed well-defined staining at peripheral cells. CONCLUSION: Immunohistochemical staining with antihuman TGF-alpha antibody could be used on differentiation between KA and SCC.
Carcinoma, Squamous Cell* ; Cell Proliferation ; Keratoacanthoma* ; Transforming Growth Factor alpha ; Transforming Growth Factors*

BACKGROUND AND OBJECTIVE: There have been some reports on the expression of TGF beta-an anti-inflammatory and fibrosing cytokine in airway mucosa of asthmatics. However, the ex- pression of TGF beta1 in bronchial mucosa of TDI-induced asthma is not known. The aim of this study was to observe immunolocalization of TGF beta1 in airway mucosa of TDI-induced asthma. METHODS: TGF beta1 expressions were compared using immunohistochemistry in bronchial muco- sa from 22 subjects with TDI-induced asthma (group I: 10 newly diagnosed, group II: 12 subjects with persistent asthma symptoms for more than 4 years after diagnosis), and 8 non- asthmatics undergoing pneumonectomy from lung tumor. The distribution and intensity of expression were analyzed by two observers in four areas of bronchial tissue-epithelium(EP), vascular endothelium(VE), smooth muscle(SM), and mucous glands(MG). RESULTS: Positive rates of TGF beta1 expression for groups I and II in the four areas were as follows; EP (50% vs 100%, p<0.05), VE(40% vs 100%, p<0.05), SM(33.3% vs 100%, p<0.05), and MG(66.7% vs 80%, p>0.05). Grades of TGF beta1 expression of EP, VE, and SM were significantly higher in group II than in group I(p<0.05, respectively). There was no significant difference in distribution and intensity of TGF beta1 expression between TDI-induced asthma and controls(p>0.05, respectively). CONCLUSION: TGF beta1 expressions of EP, VE, SM and MG were noted in airway mucosa of TDI-induced asthma and expressions of EP, VE, and SM were more intense and frequent in patients with persistent asthma symptoms.
Asthma* ; Humans ; Immunohistochemistry ; Lung ; Mucous Membrane* ; Pneumonectomy ; Toluene* ; Transforming Growth Factor beta1* ; Transforming Growth Factors*

I have examined the effects of a growth factor, transforming growth factor(TGF)-B 1, on the rates of proteoglycan synthesis, aggregation potenital, and phenotypic expression of proteoglycans from human cervical intervertebral discs maintained in a cell culture system. A cell culture system for transitional and nuclear regions of degenerated human cervical intervertebral disc disc was devised to assess the biosynthetic response, assayed by 35S-sulfate incorporation into proteoglycan and protein synthesis assayed by 35S-methionine incorporation. And I had the data as the TGF-B 1 has an effect on the proteoglycan synthesis in quantitative and qualitative analysis in the cell culture system of the human intervertebral disc. TGF-B 1 may be used as a therapeutic alternative to degenerated disc disease.
Cell Culture Techniques ; Humans ; Intervertebral Disc ; Proteoglycans ; Transforming Growth Factors