polidocanol and Fibrosis

The objective of this pilot study was to examine the histologic effects associated with three known sclerosing agents and their ability to induce fibrosis in the subcutaneous space between the cervicocephalic air sac and skin. In the future, these drugs may prove useful in treating birds experiencing cervicocephalic diverticula rupture. The agents used were 1% polidocanol, absolute ethanol, and doxycycline hyclate. Twelve healthy adult chickens (

Topics: Air Sacs; Animals; Chickens; Doxycycline; Drug Therapy, Combination; Ethanol; Fibrosis; Histiocytes; Inflammation; Lymphocytes; Pilot Projects; Polidocanol; Poultry Diseases; Rupture; Sclerosing Solutions; Skin

To compare endoscopic variceal ligation (EVL) with a combination of EVL and endoscopic scelerotherapy (EST) in the secondary prophylaxis of esophageal variceal bleeding.. Fifty patients with esophageal varices due to cirrhosis of the liver (38), noncirrhotic portal fibrosis (7), or extrahepatic portal venous obstruction (5) were included in the study. These 50 patients were randomized to receive either EVL alone or a combination of EVL and EST for variceal eradication. Twenty-one patients received EVL alone (group A), and 23 patients received EVL and EST (group B). In group B, EVLs were performed until the varices were reduced to grade II size, and, subsequently, these patients underwent low-dose sclerotherapy with 1% polidocanol until variceal eradication was achieved.. Combined EVL and EST treatment eradicated the varices in a significantly greater number of patients then EVL alone (87% vs. 24%; p < 0.05). However, significantly more endoscopic sessions were required with combined treatment than with EVL alone (5.87 +/- 2.32 vs. 4.28 +/- 1.82; p < 0.05). Rebleeding episodes before variceal eradication were similar in the two groups (19% vs. 22%). The complications were similar in both the EVL and the EVL-plus-EST group, ie., deep ulcers (16% vs. 20%), transient dysphagia (20% vs. 32%), and stricture (4% vs. 8%).. Thus, combined EVL and EST treatment eradicates varices in a significantly larger number of patients than EVL alone, with no extra complications.

Topics: Adult; Combined Modality Therapy; Deglutition Disorders; Esophageal and Gastric Varices; Esophageal Stenosis; Esophagoscopy; Female; Fibrosis; Gastrointestinal Hemorrhage; Humans; Ligation; Liver Cirrhosis; Male; Peripheral Vascular Diseases; Polidocanol; Polyethylene Glycols; Portal Vein; Prospective Studies; Recurrence; Remission Induction; Sclerosing Solutions; Sclerotherapy; Ulcer

Background Sclerotherapy has been gaining increased acceptance and popularity as an effective therapy for the treatment of varicose veins. This attention has fed growing interest into the safety and potential complications of this procedure. There is no evidence of pulmonary complications from foam sclerotherapy in humans; however, animal studies have shown possible damage. The aim of this study is to show the changes in rat pulmonary parenchyma after the injection of 1% polidocanol Tessari foam into the peripheral vein using histological analysis of the inflammatory and fibrosis processes. Methods Twenty-four Wistar rats were divided into the following four groups: 24 h polidocanol, seven-day polidocanol, 28-day polidocanol, and control group. After the foam was injected into the lateral saphenous vein, the lungs of the rats were removed for histological analysis. Results Alveolar edema was observed in only the 24 h group (P < 0.005). Vessel thickening was observed in the seven-and 28-day groups (P < 0.001). Interstitial fibrosis was found in only the 28-day group (P = 0.006). There was no evidence of venous or arterial thrombosis in either group. Conclusion Polidocanol Tessari foam injection into rat peripheral veins causes alveolar edema, vessel thickening, and interstitial fibrosis.

Topics: Animals; Fibrosis; Humans; Inflammation; Lung; Lung Diseases; Male; Polidocanol; Polyethylene Glycols; Pulmonary Alveoli; Rats; Rats, Wistar; Saphenous Vein; Sclerosing Solutions; Sclerotherapy; Treatment Outcome; Varicose Veins; Veins; Venous Insufficiency

To demonstrate the feasibility of polidocanol foam (PF) as a nonsurgical method of female permanent contraception using a nonhuman primate model.. Four groups of adult female rhesus macaques underwent either transcervical treatment with 5% PF directly into the uterine cavity, treatment with inert (methylcellulose, MF) foam or no treatment followed by removal of the reproductive tract for histologic evaluation. Untreated animals were included in Group 1 (n=3). Group 2 animals (n=4) were treated once with MF. Group 3 (n=7) received a single, and Group 4 (n=5) received multiple monthly treatments with PF; in these 2 groups, baseline tubal patency was assessed either laparoscopically by chromopertubation (CP) or by hysterosalpingography.. Group 1 (untreated) and Group 2 (MF) animals had normal tubal histology. In contrast, Group 3 and 4 females treated with PF showed evidence of tubal damage. In Group 4, bilateral tubal blockade was noted on CP after two (n=2) or three (n=3) treatments. Histologic analysis confirmed complete tubal occlusion (loss of epithelium, fibrosis) in three of these animals, and one showed significant tubal damage localized to the intramural segment. Nontarget (cervix, vagina, endometrium, ovary) reproductive tissues were unaffected. While similar tubal changes were observed after a single treatment (Group 3), endometrial hemorrhage was also noted as an acute change.. PF is a promising candidate agent for nonsurgical permanent female contraception. The histologic features of PF occlusion are confined to the intramural portion of the tube.. This study in rhesus macaques supports further development of transcervical administration of PF as a nonsurgical approach to permanent contraception. A nonsurgical method could reduce risks and costs associated with surgical female sterilization and increase access to permanent contraception.

Topics: Animals; Catheterization, Peripheral; Dose-Response Relationship, Drug; Drug Administration Schedule; Drug Evaluation, Preclinical; Drugs, Investigational; Endometrium; Epithelium; Fallopian Tubes; Feasibility Studies; Female; Fibrosis; Hysterosalpingography; Laparoscopy; Macaca mulatta; Polidocanol; Polyethylene Glycols; Sclerosing Solutions; Sterilization, Tubal; Ultrasonography; Uterine Hemorrhage; Vaginal Creams, Foams, and Jellies