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C Fucini

Publications and source records attributed to C Fucini.

10 recordsLinked to original sources
PubMed1991

Ruthenium red selectively antagonizes capsaicin-induced release of vasoactive intestinal polypeptide (VIP) from the human colon.

Ruthenium red (RR) is an inorganic dye that has shown to block the actions of capsaicin on primary sensory neurons in different animal models. The aim of this study was to assess whether RR is able to antagonize the release of vasoactive intestinal polypeptide (VIP) evoked by capsaicin in the human colon. Samples of descending colon were collected from patients undergoing colectomy for carcinoma of the colon. Tissue slices from the muscle of human colon were exposed to either 10 microM capsaicin or an isotonic high K+ medium (KCl 80 mM), in the absence or presence of 10 microM RR. Either capsaicin or high K+ produced a prompt release of VIP. RR (10 microM) completely antagonized the capsaicin-induced release of VIP from muscle of human colon. This effect was elective, since VIP release evoked by high K+ was unaffected by the presence of RR. These findings indicate that RR acts as a selective antagonist of capsaicin in human tissue and that the mechanism underlying peptide release by capsaicin is preserved across species. Multiple mechanisms leading to VIP release exist in the human colon.

Aged↗
PubMed1991

One stage treatment of anal abscesses and fistulas. A clinical appraisal on the basis of two different classifications.

In a five year period 227 patients with anal abscesses and/or fistulas of suspected cryptoglandular origin were observed and treated by one surgeon. In 201 patients the primary opening or the crypt of origin of the abscesses and/or fistulas were identified. These lesions were evaluated according to two classifications [1,2]. The aim was to verify whether primary abscesses and/or fistulas may spontaneously loop all the external sphincters and the puborectalis muscle as reported by Parks et al. [1] or whether the formation of tracks which loop all the striated sphincteric complex (Parks' supra- and extra-sphincteric fistulas) derives exclusively by the incorrect treatment of more superficial lesions, as suggested by Eisenhammer. Not one of the primary suppurative lesions (acute or chronic) looped the striated sphincteric complex (external sphincter-puborectalis muscle). Supra- and extrasphincteric tracks were observed only in the lesions which recurred after previous surgical treatment. The one-stage treatment of primary abscesses and fistulas (fistulotomy drainage or one-stage lay-open) with a few exceptions is a definitive (2% recurrence rate) and safe (4% prolonged impairment of continence rate) procedure.

Abscess↗
PubMed1991

Bleeding from peristomal varices: perspectives on prevention and treatment.

Peristomal variceal bleeding is a serious complication in patients with chronic liver disease undergoing colon surgery with a stoma. Our aim was to examine the morbidity of bleeding for peristomal, perianastomotic, and esophageal varices in a group of patients with chronic liver disease who underwent colectomy at the Mayo Clinic between 1970 and 1988. Morbidity was evaluated in terms of the number of major bleeding episodes and the number of units of blood transfused. The treatment of bleeding was also evaluated. One hundred seventeen patients (74 males and 43 females) aged 11-78 years were studied. Sixty-two patients (53 percent) had a permanent stoma, while 55 patients (47 percent) had a colonic resection and anastomosis. Sixty-seven patients (62 percent) had chronic ulcerative colitis and primary sclerosing cholangitis. In the stoma group, bleeding appeared from stomal and/or esophageal varices in 19 patients (31 percent), while, in the non-stoma group, bleeding exclusively from the esophageal varices occurred in eight patients (15 percent). Perianastomotic variceal bleeding was never observed. The 5-year cumulative probabilities of one major bleed occurring from gastrointestinal varices appeared to be similar between the two groups. Patients who bled from peristomal varices with or without esophageal bleeding (n = 17) rebled more frequently (6.5 +/- 5.5 vs. 3 +/- 1.6; P less than 0.05) and were transfused more often (14.9 +/- 12.3 vs. 7.5 +/- 4.1; P less than 0.05) than patients who bled exclusively from esophageal varices (n = 10). No difference was found in the incidence of recurrent bleeding and the number of units of blood transfused between patients who bled exclusively from peristomal varices (n = 10) and those who bled from both peristomal and esophageal varices (n = 7). Medical and local measures were more effective in controlling esophageal bleeding than in controlling peristomal bleeding. Therefore, patients with chronic liver disease who must undergo colectomy should have a distal anastomosis rather than a terminal stoma.

Abdominal Muscles↗
PubMed1988

The double contrast barium enema in the identification of proximal colonic adenomas and carcinomas beyond the limits of fiberoptic sigmoidoscopy.

Eight hundred and twenty patients were examined by fiberoptic sigmoidoscopy (SIG) and double contrast barium enema (DCBE) to detect colonic cancers or adenomas. Cancer or adenoma in the bowel tract proximal to the upper limit of SIG insertion was detected in 4 patients and in 12 on DCBE. The DCBE detection rate of proximal colonic lesions varied according to the hemoccult (HO) outcome. This was 1.16% for cancer and 2.03% for adenoma in HO+ patients and null for cancer and 1.23% for adenoma in HO- patients. The detection rate of proximal adenomas was higher in patients who presented adenomas on endoscopy in the distal bowel (SIG+), 2.46% as compared to 0.48% in SIG- patients, independent of the HO reports. Routine DCBE is practically useless in HO-SIG- patients and questionable in HO-SIG+ patients since improvement of the detection rate is null for cancer and moderate for adenoma. It is recommended for HO+ patients because it increases the colonic cancer detection rate (10.5% in this study).

Adenoma↗
PubMed1987

Follow-up of colorectal cancer resected for cure. An experience with CEA, TPA, Ca 19-9 analysis and second-look surgery.

Sixty-four consecutive patients who had undergone curative resection for colorectal carcinoma were studied prospectively to evaluate the roles of sequential CEA determinations and independent instrumental follow-up in the early detection of resectable recurrences. Fifty-two of these patients also were submitted to sequential determinations of other tumor antigens: TPA (tissue polypeptide antigen) and Ca 19-9 (colon cancer antigen detected with a monoclonal antibody), for a retrospective evaluation of their utility as markers of recurrent tumors. Twenty-two recurrences were detected in a period ranging from 12 to 72 months (median, 47 months). CEA was the best predictor of recurrence (sensitivity, 90 percent) when compared with the other two markers (TPA sensitivity, 60 percent; Ca 19-9 sensitivity, 20 percent). When compared with the instrumental or biochemical examinations of the follow-up, CEA was still the most sensitive indicator of relapse although the specificity was quite low (78 percent) if minimal significative increases were considered. History and physical examination were more useful than CEA in detecting local recurrences in rectal cancer where the preoperative CEA level was low. A few second-look explorations based solely on small CEA increases failed to demonstrate recurrence or revealed peritoneal carcinomatosis. Selected second-look surgery based on demonstrated recurrences resulted in a resectability rate of 57 percent. A follow-up program based on frequent CEA assays, history, and physical examinations, including rectal, vaginal, and perineal exploration, is proposed. Extensive instrumental investigations should follow when a minimal significative CEA rise is observed, or when history and physical examinations suggest a possible recurrence. Second-look surgery should be evaluated after confirmed or highly suspected diagnosis of recurrence, on the basis of instrumental or clinical examinations.

Adult↗
PubMed1986

An appraisal of endoscopic removal of malignant colonic polyps.

The issue of whether patients who have invasive carcinoma in an otherwise benign polyp should undergo surgical resection of that bowel segment is controversial. We examined the records of 83 patients with such polyps that were removed endoscopically between 1978 and 1981. After exclusion of 18 patients from the study for various reasons, our study group consisted of 65 patients who had undergone complete endoscopic removal of 69 polyps that contained a malignant process. Carcinoma in situ was found in 34 polyps, and 3 patients with such polyps had a recurrent malignant lesion of the same degree. These recurrent tumors were treated successfully by aggressive endoscopic removal. Seventeen polyps that contained invasive carcinoma were treated endoscopically without resection, and two patients in this group subsequently had recurrent carcinoma at the site of the original polyp. These recurrent lesions were resected, and neither patient had evidence of nodal metastasis. Of the 18 patients who underwent immediate resection of invasive carcinoma, 2 had residual carcinoma at the time of the resection, although no lymph node metastasis was found. We conclude that colonic polyps with carcinoma in situ can be treated safely with complete endoscopic removal. Invasive carcinoma in a polyp can be treated safely with complete polypectomy, and immediate resection may not be necessary. This group of patients, however, should undergo thorough follow-up studies and periodic endoscopic reexamination.

Adenocarcinoma↗
PubMed1985

Are postoperative fever and/or septic complications prognostic factors in colorectal cancer resected for cure?

The authors have examined the survival rate of 111 patients with colorectal cancer (Dukes' A, B, and C stages) treated by potentially curative surgery. In particular, the survival has been evaluated with regard to the appearance of postoperative fever and/or septic complications. The preliminary results demonstrate that these factors do not significantly influence the long-term prognosis.

Adult↗