scholarly journals CONNECTIVE TISSUE SYNTHESIS BY SCLERODERMA SKIN FIBROBLASTS IN CELL CULTURE

1972 ◽  
Vol 135 (6) ◽  
pp. 1351-1362 ◽  
Author(s):  
E. Carwile Leroy
Keyword(s):  
Connective Tissue ◽  
Fibroblast Cell ◽  
Skin Fibroblasts ◽  
Anatomic Site ◽  
Glycoprotein Synthesis ◽  
Tissue Metabolism ◽  
Donor Skin ◽  
Connective Tissue Metabolism ◽  
And Control

Skin fibroblasts from subjects with scleroderma and control subjects were grown in tissue culture to compare the characteristics of connective tissue metabolism. A striking increase in soluble collagen (media hydroxyproline) was observed in eight of nine scleroderma cultures when they were compared with identically handled control cultures matched for the age and sex of the donor and the anatomic site of the donor skin. Glycoprotein content as estimated by hexosamine and sialic acid was also significantly increased in the scleroderma cultures. Estimations of protein-polysaccharide content by uronic acid determinations were low in all cultures and not significantly increased in scleroderma cultures. This report demonstrates the feasibility of using fibroblast cell cultures to study chronic rheumatic and connective tissue disorders. The initial results suggest a net increase in collagen and glycoprotein synthesis in scleroderma fibroblast cultures. The implications of an abnormality of connective tissue metabolism by skin fibroblasts propagated in vitro in the acquired disorder scleroderma are discussed.

Effects of oxytocin on cervical and uterine connective tissue

1984 ◽  
Vol 106 (2) ◽  
pp. 271-276 ◽  
Author(s):  
Ingrid Wiqvist ◽  
Anders Norström ◽  
Nils Wiqvist
Keyword(s):  
Connective Tissue ◽  
Pregnant Women ◽  
Inhibitory Effect ◽  
Lower Uterine Segment ◽  
Collagen Metabolism ◽  
Clinical Experiences ◽  
Experimental Conditions ◽  
Tissue Metabolism ◽  
Connective Tissue Metabolism

Abstract. The effect of oxytocin on collagen metabolism in the cervix and lower uterine segment of pregnant women was studied by measuring the incorporation of [3H]proline in vitro. Oxytocin had a concentration related inhibitory effect on the labelling with [3H]proline. Addition of indomethacin did not influence the response to oxytocin indicating that the effect was not directly mediated by prostaglandins. Oestradiol-17β potentiated the effect of oxytocin. Vasopressin decreased the incorporation of [3H]proline slightly but the action of this hormone was significantly less than that of oxytocin. The results suggest that oxytocin under in vitro experimental conditions influences cervical connective tissue metabolism which is in contrast to current clinical experiences.

scholarly journals BIOCHEMICAL MARKERS OF CONNECTIVE TISSUE METABOLISM IN RATS’ BLOOD SERUM WITH EXPERIMENTAL KNEE OSTEOARTHRITIS AND THEIR DYNAMICS DURING CONSERVATIVE TREATMENT

2019 ◽  
Vol 72 (2) ◽  
pp. 193-197
Author(s):  
Kyrylo V. Makolinets ◽  
Vasyl I. Makolinets ◽  
Dmytro V. Morozenko ◽  
Kateryna V. Gliebova ◽  
Svitlana I. Danylchenko
Keyword(s):  
Laser Radiation ◽  
Conservative Treatment ◽  
Connective Tissue ◽  
Biochemical Markers ◽  
Diclofenac Sodium ◽  
Infrared Laser ◽  
Knee Joints ◽  
Glucosamine Hydrochloride ◽  
Tissue Metabolism ◽  
Connective Tissue Metabolism

Introduction: There are many methods for diagnosis and treatment of knee joints osteoarthritis in modern orthopedics. The infrared radiation is one of the most popular and effective methods though it needs experimental substantiation on rats. The aim: Experimental definition of the effectiveness of the proposed method of conservative treatment of knee joints osteoarthritis using sodium diclofenac, glucosamine hydrochloride and infrared laser radiation, on the basis of biochemical markers of connective tissue metabolism in rats. Materials and methods: Experimental studies were performed on 40 white male rats. A part of rats received infrared laser radiation in addition to diclofenac sodium and glucosamine hydrochloride. Results: Using a complex of infrared laser radiation and glucosamine hydrochloride and diclofenac sodium in conservative treatment of rats with experimentally induced knee joints osteoarthritis rats after 24 days of treatment. Treatment with the above-mentioned scheme resulted in a significant reduction in the content of glycoproteins (28.5%), chondroitin sulfates (26.1%), alkaline phosphatase activity (32.3%), and I and II fractions of glycosaminoglycans, namely chondroitin-6- (28.7%) and chondroitin-4-sulfate (40.3%). Moreover, these indicators of the studied markers approached the level of intact animals. Conclusions: Changes in biochemical markers of connective tissue in rats during experimental knee joints osteoarthritis indicated a higher efficiency of the treatment regimen with the use of low-intensity infrared laser radiation compared with exclusively drug therapy.

Expression of mRNAs related to connective tissue metabolism in rat hepatic stellate cells and myofibroblasts

2007 ◽  
Vol 58 (4) ◽  
pp. 263-273 ◽  
Author(s):  
Alena Jiroutova ◽  
Rastislav Slavkovsky ◽  
Martina Cermakova ◽  
Lenka Majdiakova ◽  
Irena Hanovcova ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Hepatic Stellate Cells ◽  
Stellate Cells ◽  
Tissue Metabolism ◽  
Connective Tissue Metabolism

scholarly journals Role of lysyl oxidase like 1 in regulation of postpartum connective tissue metabolism in the mouse vagina†

2019 ◽  
Vol 101 (5) ◽  
pp. 916-927 ◽  
Author(s):  
Ali Borazjani ◽  
Bruna M Couri ◽  
Mei Kuang ◽  
Brian M Balog ◽  
Margot S Damaser
Keyword(s):  
Gene Expression ◽  
Enzyme Activity ◽  
Connective Tissue ◽  
Lysyl Oxidase ◽  
Gelatin Zymography ◽  
Pelvic Organ ◽  
Tissue Metabolism ◽  
Reverse Transcription Pcr ◽  
Connective Tissue Metabolism

Abstract Pelvic organ prolapse (POP) in lysyl oxidase like-1 knockout (Loxl1 KO) mice occurs primarily in parous mice and is rare in nulliparous mice. We determined the effect of Loxl1 deficiency on postpartum regulation of connective tissue metabolism genes and degradative enzyme activity in the vagina at 20 days gestation or 4 h, 48 h, 7 days, 15 days, 25 days, 7 weeks, or 12 weeks postpartum. Nulliparous Loxl1 KO and wildtype (WT) mice aged 11, 18, or 23 weeks were controls. Gene expression and enzyme activity were assessed using real-time quantitative reverse transcription PCR and fluorescein conjugated gelatin zymography, respectively. Parity, but not aging, had a significant influence on gene expression both with time postpartum and between KO and WT mice. Mmp2, Timp1, Timp2, Timp3, Timp4, Col1a1, Col3a1, Acta2, and Bmp1 were differentially expressed between KO and WT mice. Correlational analysis of gene-gene pairs revealed 10 significant differences between parous KO and WT groups, 5 of which were due to lack of co-expression of Bmp1 in KO mice. The overall enzyme activity that could be attributed to MMPs was significantly higher in WT compared to KO mice both 25 days and 12 weeks postpartum, and MMP activity was significantly lower 15 days and 25 days postpartum compared to KO nulliparous controls, but not WT. These findings suggest that Loxl1 deficiency combined with parity has a significant impact on postpartum regulation of connective tissue metabolism, particularly as it relates to co-expression of Bmp1 and altered proteolytic activity.

Sign in / Sign up

Export Citation Format

Share Document