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A new murine monoclonal antibody, CMU10, as a marker for colonic carcinoma and precancerous conditions.

OBJECTIVE: To investigate the usefulness of a cancer-associated mucin antigen using a new monoclonal antibody, CMU10, as a tumor marker. Expression was assessed in normal adult, fetal, hyperplastic, preneoplastic, and neoplastic tissues of colon. DESIGN: CMU10 monoclonal antibody recognizes a mucin antigen that is not expressed in normal fetal and adult large intestine, but is rather commonly expressed in cancerous and precancerous lesions. Immunocytochemical analysis was performed on human tissues obtained at surgery or at autopsy. RESULTS: Expression of this mucin antigen was observed in 27 (98.4%) of 28 cases of colorectal carcinoma, 24 (96%) of 25 cases of adenomatous polyps, 9 (75%) of 12 cases of ulcerative colitis, and 9 (100%) of 9 cases of hyperplastic polyps. In cancerous specimens, the antigen distribution was mainly localized in the secretory mucin and surface membrane, whereas in precancerous lesions it was located in dysplastic, dilated, and distorted crypts. CONCLUSIONS: Because CMU10 differentially recognizes an antigen in cancerous and precancerous tissues, but not in normal tissues, it may be useful as a tumor marker for immunodiagnosis and, hence, early detection.

Adenomatous Polyps↗

[The antiulcer effect of corticosteroids and the blood flow in the gastric mucosa].

Intravital microfilming by means of dark-field contact epiobjective was used for investigation of the role of gastric microcirculation in antiulcerogenic action of corticosteroids in rats. Microvascular volume blood flow velocity was calculated from measurements of red cell velocity and vessel diameters. There was compared gastric submucosal and mucosal microcirculation as well as gastric ulceration after water-immersion stress in rats with normal function of hypothalamo-pituitary-adrenocortical (HPA) axis and in rats with insufficiency of corticosteroid production, induced by blockade of the HPA axis. The 3h stress induced gastric ulcerations, dilatation of mucosal microvessels and a significant decrease of volume blood flow in submucosal microvessels. These changes were greater in rats with blockade of HPA axis than in animals with normal corticosteroid production. Replacement corticosterone therapy decreased the effects of HPA axis blockade. Thus corticosteroids which are produced during stress restricted the reduction of volume blood flow in submucosal microvessels, the dilatation of mucosal microvessels as well as gastric ulcerations. These findings indicate that corticosteroids exert their antiulcerogenic action via the mechanism of improvement of gastric microcirculation.

Adrenal Cortex Hormones↗

Unusual pulmonary vasodilator activity of 13,14-dehydroprostacyclin methyl ester: comparison with endoperoxides and other prostanoids.

Microsomes from stomach fundus and blood vessels transform the endoperoxide, PGH2, into a newly discovered unstable substance, PGI2, that relaxes arterial strips and inhibits platelet aggregation. 13,14-Dehydro-PGI2 methyl ester, a newly synthesized, stable PGI2 analog, was found to have potent vasodilator activity in the feline and simian pulmonary vascular bed. The PGI2 analog decreased lobar arterial perfusion pressure in the intact cat and monkey. Because pulmonary blood flow was held constant and left atrial pressure was unchanged, the decrease in perfusion pressure reflects a decrease in pulmonary vascular resistance. The dilator response was unusual in that it persisted for 10-12 min, whereas the response to PGE1, the only other vasodilator prostaglandin in the mature animal, persisted for only 1-2 min. The dilator response to the PGI2 analog was enhanced when pulmonary vascular resistance was increased. This substance had less effect on cardiac output and aortic pressure than PGE1, whereas it was a more potent pulmonary vasodilator. These data demonstrate that prostacyclin-like substances possess novel vasodilator activity in the pulmonary circulation and suggest a therapeutic use in the treatment of pulmonary hypertensive diseases.

Animals↗

[A 61-year-old man with progressive gait disturbance, freezing, and vertical gaze paresis who developed esophagus cancer].

We report a 61-year-old Japanese man who died of complications of esophagus cancer surgery. He was well until his 55 years of the age, when he had an onset of speech disturbance and hand writing. He was seen by a neurologist who prescribed Menesit 600 mg/day. His symptoms improved with this medication. In 1993, three years after the onset, he started to show gait disturbance and easy to fall. In 1995, he noted difficulty in eye opening. He visited our clinic on October 26, 1996. On examination, he showed vertical gaze paresis, masked face, nuchal rigidity, small step gait, freezing phenomena, and festination. His mental status was normal. He was treated with 800 mg/day of Menesit, 800 mg/day of L-dops, and 10 mg/day of bromocriptine with little improvement in his symptoms. Cranial CT scan revealed some dilatation of the third ventricle. Subsequent clinical course was one of the slow progression of his parkinsonism. In September of 1997, he noted difficulty in swallowing. He was admitted to the gastrointestinal service of our hospital on October 14, 1997. On admission, neurologic status was essentially similar to the previous one, but he showed more advanced state of his parkinsonism. Upper gastrointestinal series revealed a mass lesion of about 11.5 cm in length protruding into the lower esophagus lumen. Subtotal esophagus resection including the mass was performed on December 2, 1997. The stomach was elevated for anastomosis with the upper esophagus. No metastases were found in the mediastinum except for two lymph nodes in the para-esophageal region. The subsequent course was complicated by marked elevation of GOT, GPT, LDH, total bilirubin as well as direct bilirubin, alkaliphosphatase, and amylase starting in the evening of the surgery. On December 7, leukocytosis and pneumonic shadow were seen involving his right lung. On December 10, he developed cardiopulmonary arrest. He was once resuscitated; however, he developed cardiac arrest again seven hours later and pronounced dead. He was discussed in a neurologic CPC. The chief discussant arrived at the conclusion that the patient had PSP and the cause of the death was ascribed to circulatory disturbance to the liver. The discussant also thought that the terminal course was complicated by cholangitis or cholecystitis, sepsis, and pulmonary embolism. Surgical specimen of the esophagus tumor revealed carcinosarcoma. Postmortem examination revealed yellowish discoloration of the peritoneum and mesenterium, and accumulation of clouded ascites indicating the presence of peritonitis. Inflammatory change extended to the mediastinum. On microscopic examination, various kinds of bacilli and candida spores were seen. The liver was enlarged and a perforation was noted in the gallbladder causing biliary necrosis in the adjacent liver. An extensive infarct was seen in the left lobe of the liver; this was found to be due to obstruction of the hepatic artery at the site of the duodenohepatic mesenterium and obstruction of intrahepatic portal vein secondary to retrograde intrahepatic cholangitis in the left lobe. A piece of surgical threads was seen adjacent to the hepatic artery; foreign body granulomatous reaction was seen surrounding the surgical thread. The rupture of the gallbladder appeared to be due to the obstruction of the left branch of the hepatic artery. Neuropathologic examination revealed extensive degeneration of the pallidum, the substantia nigra, and the subthalamic nucleus and presence of neurofibrillary tangles in the remaining neurons. The neuropathologic findings were consistent with progressive supranuclear palsy, although the pathologic changes in the midbrain tegmentum was only mild gliosis.

Carcinosarcoma↗

Helicobacter pylori affects the quality of experimental gastric ulcer healing in a new animal model.

Helicobacter pylori has been implicated in the genesis of human gastritis, dyspepsia, and peptic ulcers. However, its influence in the quality of experimental gastric ulcer healing has not been previously investigated. Standardized gastric fundic ulcers were produced in 50 male Sprague-Dawley rats (150-200 g) by a 4 mm in diameter focal, serosal application of 100% acetic acid. Thirty rats were administered 2 ml H. pylori suspension (urease producing, ATCC 43504) in normal saline (10(8) CFU/ml) 2x/day for 7 days. Twenty rats (controls) received 2 ml normal saline 2x/day for 7 days. Gastric ulcer surface area was measured under a dissecting microscope and mucosal specimens were obtained for qualitative and quantitative histology. No gross or microscopic duodenal abnormalities were identified at sacrifice. Ninety percent of control rats showed grossly and microscopically entirely healed ulcers. The remaining 10% showed partially reepithelialized ulcers (area, 0.78 to 1.77 mm2; mean, 1.27 +/- 0.7 mm2). The grossly "healed" mucosa demonstrated marked dilatation of gastric glands lined with mature surface epithelial cells. Parietal cells were scanty (5-10% of all cells). One hundred percent of the H. pylori-exposed rats showed persistence of chronic active ulcers (area, 1.76 to 19.63 mm2; mean, 8.95 +/- 6.15 mm2). The ulcer beds were infiltrated by acute and chronic inflammatory cells, abundant fibroblasts, and capillary networks. The raised ulcer borders were characterized by dilated glands lined by mature surface epithelial cells. Various special stains demonstrated the presence of H. pylori in the surface mucus and within the crypts.(ABSTRACT TRUNCATED AT 250 WORDS)

Acetates↗

A review of causal factors and control measures for bloat in farmed salmonids with a suggested mechanism for the development of the condition.

A mechanism for the development of bloat in salmonids is proposed and explained in terms of the physiology of digestion and osmoregulation in fish. Understanding the causal factors for bloat enables control measures to be identified. In farmed salmonids, the chyme produced during the digestion of nutrient-rich pelleted foods that rapidly disintegrate in the stomach will be a potent activator of a negative feedback mechanism (enterogastric control), which slows stomach emptying to protect the small intestine from nutrient overload. In saline environments salmonids continuously drink sea water to replace fluid lost across the gills. Fluid loss is increased during periods of stress caused by factors such as low oxygen levels, elevated temperature or high salinity. When ingestion of nutrient-rich food results in prolonged activation of enterogastric control, slowed stomach emptying leads to decreased absorption of water, thirst and increased drinking. This further exacerbates stomach distention. The proposed mechanism for the development of bloat is supported by on-farm experience where measures to control bloat include reducing food intake, altering the composition of the diet and using appropriate strategies to reduce stress.

Air Sacs↗

1291 cases of cholelithiasis treated with electric shock on otoacupoints.

Since 1985, the authors began to use electric shock on otoacupoints of varying electric resistance for the treatment of cholelithiasis. The instrument used was the Channel Therapeutic Instrument made in China, and the otoacupoints of varying electric resistance were Sympathetic, Pancreas--Gall Bladder, Stomach, Liver, Sanjiao, Endocrine, and Ermigen. In the 1291 cases treated, the total effective rate was 99.69%, the rate of calculus excretion was 91.32%, and the rate of total excretion was 19.51%. The composition of the calculi was cholesterol crystals (31.25%), bilirubin crystals (28.17%), and mixed crystals (40.58%). The largest calculus excreted was an extrahepatic biliary duct calculus of 1.75 cm X 1.5 cm; the largest number of calculi excreted was 152 cholecystic stones 0.3 cm X 0.5 cm in size. In 100 random cases, the biliary system was shown to manifest vigorous dilations and constrictions under Ultrasonic B-scan when the relevant otoacupoints were stimulated with electric shock. Among the 78 control cases, no cholecystic stones were excreted, inspite of the Magnesium Sulfate, Folium Cassiae and fatty meals administered to many cases with constipation.

Acupuncture Points↗

Light and electron microscopic observations of the acute sublethal hepatotoxic effects of Mirex in the rat.

The fire-ant poison, Mirex, was administered via stomach tube (dosage 200 mg/kg) to 50 adult Mai-Wistar male rats and the resultant histopathologic lesions produced in their livers after six days post-intubation are described. Light (LM) and electron microscopic (EM) technques revealed cellular and subcellular alterations in response to this sublethal dosage. Pathologic lipid accumulations occurred in Mirex-exposed rats and this fat appeared in a distinctive periportal zonation pattern. Additional lesions were detected in centrolobular zones with the EM and included severe glycogen depletion, altered regularity in the architecture of rough or granular endoplasmic reticulum (GER), dilated GER cisternae, free ribosomes, and proliferation of smooth endoplasmic reticulum. Periportal hepatocytes exhibited apparent reduction in numbers of cytoplasmic organelles and development of many, large lipid-containing vacuoles. Myelin figures were sometimes associated with developing lipid (liposomes), suggesting a contribution of myelin membranes to the developing lipid droplets or vice versa. Biochemical studies revealed that glycogen levels dropped markedly, lipid content greatly increased, and protein/DNA and RNA/DNA values decreased.

Animals↗

Endoscopic dilation of gastroesophageal anastomosis stricture after gastric bypass.

BACKGROUND: The management of strictures after gastric bypass procedure using balloon dilation is described. METHODS: A retrospective review of all dilations performed is presented. Balloon dilators were used, and all strictures were dilated initially up to 12 to 15 mm for 1 min. RESULTS: The review included 24 patients with a mean age of 42.8 years and a mean body mass index of 49.6. All the patients except one were women. In terms of procedure, 67% required one dilation and 30% required two. In the first 3 months after surgery, 21 patients developed the stricture. Three patients (13%) had leaks. There was no endoscopic appearance suggesting the need for a repeated procedure. All the dilations were successful, and weight loss compared well with that in the rest of the patients. CONCLUSIONS: A successful technique for the treatment of anastomotic strictures after gastric bypass is presented. Most of the patients required one dilation. Most strictures appeared during the first 3 months after surgery. Female gender and leak may be high risk factors for the development of stricture.

Adolescent↗

Endoscopic hydrostatic balloon dilation of ulcer-induced pyloric stenosis in rheumatoid arthritis and secondary amyloidosis.

We describe a 50-year-old Japanese woman with rheumatoid arthritis who presented with near-complete gastric outlet obstruction. The patient also suffered from secondary gastrointestinal and cardiac amyloidosis. Gastroscopy revealed multiple huge gastric antral ulcers in which amyloid deposits were identified on histologic examination. The ulcers became scars after treatment with omeprazole, which cause in severe pyloric stenosis. Endoscopic hydrostatic balloon dilation under fluoroscopic guidance was performed twice for 10 min. The pyloric outlet remained sufficiently patent 22 months later.

Amyloidosis↗

Laparoscopic Roux-en-Y feeding jejunostomy: a new minimally invasive surgical procedure for permanent feeding access in children with gastric dysfunction.

Long-term feeding access in children with foregut dysfunction has traditionally been achieved by gastrostomy tube placement with or without fundoplication. Alternatives after failed procedures have included re-do fundoplication, transpyloric gastrojejunal tube placement, loop jejunostomy (open or laparoscopic), and open Roux-en-Y jejunostomy. We describe a new technique, laparoscopic Roux-en-Y feeding jejunostomy (LRFJ), which offers a minimally invasive option in providing long-term enteral access to these children. Five children, ages 10 months to 9 years (mean age, 3.4 years), weighing 8.8 to 15.2 kilograms (mean weight, 12.3 kg), underwent LRFJ. Four children had mental retardation/cerebral palsy. In 3 children, LRFJ was the only intra-abdominal procedure performed. No technical complications related to the procedure were observed. Mean operative time was 98 minutes in the children in which LRFJ was the only procedure performed. Enteral feeds were typically begun by postoperative day (POD) 5. Follow-up has ranged from 12 to 30 months (mean follow-up, 23 months). All 4 survivors remain on full jejunal feedings and are doing well. One child developed stomal stenosis requiring dilatation. In summary, LRFJ can be performed safely in children with gastric dysfunction, may be performed in conjunction with a variety of other laparoscopic procedures, and offers a new option for nutritional access in this challenging pediatric population.

Anastomosis, Roux-en-Y↗

Role of gastric microcirculation in the gastroprotection by glucocorticoids released during water-restraint stress in rats.

Our previous investigations demonstrated that glucocorticoids released in response to stress protect gastric mucosa against stress-induced ulceration. This study was designed to determine whether gastric microcirculation is involved in the mechanism of gastroprotective glucocorticoid action. For this we evaluated the effects of deficiency of glucocorticoid production during 3 hr water-restraint stress and corticosterone replacement on the stress-induced gastric erosions, gastric microcirculation and arterial pressure in rats. The stress was produced in awake rats and gastric microcirculation and arterial pressure were evaluated in animals anesthetized in 3 hr after the onset of water-restraint stress. An in vivo microscopy technique for the direct visualization of gastric microcirculation was employed. The gastric submucosal and the superficial mucosal microvessels were monitored on television screen through a microscope and the pictures were stored by microfilming for the analysis of red blood cell velocity and vessel diameter. Gastric microcirculation was estimated on the base of both the volume blood flow velocity in submucosal microvessels and the diameter of superficial mucosal venous microvessels. Gastric erosions were quantitated by measuring the area of damage. Plasma corticosterone levels were also measured after 3 hr stress by fluorometry. Water-restraint stress induced an increase in corticosterone level, an appearance of gastric erosions, a decrease in volume blood flow velocity of submucosal microvessels, a dilatation of superficial mucosal microvessels, a decrease in arterial pressure. The deficiency of glucocorticoid production during water-restraint stress promoted the stress-induced gastric ulceration, a dilatation of mucosal microvessels, a decrease of blood flow velocity in submucosal microvessels and of arterial pressure. Corticosterone replacement eliminated the effects of deficiency of glucocorticoid production on all of the parameters under study. Thus, the stress-induced corticosterone rise decreased gastric ulceration, restricted both the reduction of blood flow velocity in submucosal microvessels and a dilatation of superficial mucosal venous microvessels during water-restraint stress. These data suggest that the gastroprotective action of glucocorticoids during stress may be provided by the maintenance of gastric blood flow.

Animals↗

[Percutaneous balloon-catheter dilatation of benign strictures of the bile ducts].

Two cases of patients with benign biliary strictures (one with anastomotic and another with iatrogen stenosis of the common bile duct) successfully treated by percutaneous transhepatic balloon dilatation are presented. The patients have been symptom-free for 24 and 14 months, respectively. The author deals with the indication of the procedure including all the benign stenoses where surgical reconstruction is not feasible. It is also emphasized that the balloon dilatation needs rather long-time manipulation during which both the patient and the personnel are exposed to significant amount of scattered radiation. One of the important factors in decreasing the need for manipulation is the availability of adequate devices (a series of high pressure balloon catheters).

Adult↗

Symptomatic diaphragmatic hernia: surgical treatment.

Seventy-eight cases of symptomatic diaphragmatic hernia are reported--55 hiatal (42 sliding, 9 rolling, 4 intrathoracic stomach), 19 diaphragmatic hernias proper (12 Bochdalek, 7 Morgagni) and four diaphragmatic eventrations. Pulmonary function was compromised by massive herniation in ten cases. Four hernias were incarcerated. Surgery was performed in 76 cases, as emergency in ten. Two patients were rejected because of poor pulmonary function. One patient died and three hernias recurred. The results were satisfactory in 72 cases. In sliding hiatus hernia, gastro-oesphageal reflux is the main problem and investigations should include oesophagoscopy, fluoroscopy and manometry, with treatment directed at prevention of reflux. Surgical treatment, if indicated, is usually fundoplication and dilatation of strictures. In rolling hiatus hernia and all types of diaphragmatic hernia proper, the hernia per se is the main problem, with risk of incarceration. Surgery is always indicated and should comprise reduction of hernia contents, excision of the sac and closure of diaphragmatic rift.

Adolescent↗

Gastric outlet and duodenal obstruction from inflammatory pancreatic disease.

During a ten-year period, 16 patients with gastric outlet and duodenal obstruction due to inflammatory pancreatic disease were seen. The cause of obstruction was chronic pancreatitis in ten patients, pseudocysts with associated pancreatitis in five patients, and pancreatic abscess in one patient. All patients had nausea and vomiting, 14 had abdominal pain, and five had weight loss greater than 4.5 kg. Diagnosis was made by plain abdominal film in one case, upper gastrointestinal tract roentgenographic series in 15 cases, and endoscopy in 11 cases. Mobilization of the duodenum relieved the obstruction in two patients. Fixed obstruction remained in 14 patients. This was relieved by gastrojejunostomy in 12 patients. Gastrojejunostomy was combined with drainage of a pseudocyst in three patients, a dilated pancreatic duct in three patients, and a dilated common bile duct in four patients. Obstruction was relieved by pseudocyst drainage in two patients. Associated common duct and pancreatic duct obstruction must be identified preoperatively.

Abscess↗

Pattern of gastric emptying in functional dyspepsia. An ultrasonographic study.

We assessed the ultrasonographic pattern of gastric emptying in patients with functional dyspepsia, evaluating its relationship with symptoms. Twenty dyspeptic patients, with slight (group A) and severe (group B) symptoms, and 10 controls (group C) underwent ultrasonographic study of gastric emptying by measuring postprandial variations of the antral area at regular intervals. The time at which the antral area returned to the basal value was assumed to be the final emptying time. The final emptying time was significantly longer in both group A (294 +/- 42 min) and group B (340 +/- 36 min) compared to controls (244 +/- 21 min), but no significant difference was observed between them. A significantly (P < 0.05) greater dilation of the antral area was found at 50 min in group B compared to group A patients. A different pattern of antral motor function rather than a delay of gastric emptying correlates with the severity of symtoms in dyspeptic patients.

Adult↗

L-Arginine protects and exacerbates ethanol-induced rat gastric mucosal injury.

BACKGROUND AND AIMS: We have previously demonstrated that 60% ethanol (EtOH) increases macromolecular leakage and induces focal lesion formation in areas of permanent flow stasis within gastric mucosal vessels. Nitric oxide (NO) may prevent lesion formation by inhibiting leakage. This study used fluorescent in vivo microscopy to investigate (i) whether L-arginine (NO precursor) prevented EtOH induced injury and (ii) the mechanisms of protection. METHODS: Experiments were carried out on anaesthetized rats (hypnorm/diazepam) receiving either intra-arterial fluorescein isothiocyanate-bovine serum albumin (0.2 mL/100 g), a marker for quantitating leakage, or Acridine red (0.1 mL/100 g) which labels leukocytes. Animals then received 100, 300 or 500 mg/kg L-arginine (i.a.) followed by 60% EtOH or distilled water, topically applied to the gastric mucosa (n = 6 for each group). Vessel diameter, macromolecular leakage of labelled albumin from post capillary venules (PCV) and capillaries and leukocyte activity were quantitated using image analysis. RESULTS: L-Arginine (100 mg/kg) did not increase vessel diameter or prevent EtOH-induced lesion formation and leakage. Both 300 mg/kg and 500 mg/kg alone induced significant and sustained increases in PCV diameter after 15 (P< 0.01) and 5 min (P< 0.001), respectively. Lesion formation was only prevented by 300 mg/kg L-arginine, whereas 500 mg/kg exacerbated haemorrhagic lesion formation over the entire exposed mucosa. Neither 300 mg/kg nor 500 mg/kg L-arginine prevented leakage following EtOH. No leukocyte activity was observed following EtOH with or without L-arginine pretreatment. CONCLUSION: L-Arginine (300 mg/kg) prevented lesion formation. The mechanism of protection probably involved the increased blood flow in the dilated PCV and not the inhibition of leakage. The combined effects of EtOH and the possible high NO levels exacerbate gastric mucosal damage despite the increases observed in vessel diameter.

Animals↗

[Diabetic ophthalmoplegia--a clinico-pathological study of the first case in Japan].

Many reports of diabetic ophthalmoplegia have been published from the clinical points of view. However, there have been only three autopsied cases in which the ocular nerves were investigated histopathologically. A 72-year-old housewife was diagnosed to have glycosuria at the age of 67, but no medical treatment was done. She admitted to the hospital, because of acute onset of right eyelid drooping and diplopia for previous four days. She showed complete eyelid ptosis, moderate dilatation of right pupil, loss of light reaction, and extraocular muscle palsy except abduction on the right. Blood pressure was normal. A glucose tolerance test was diabetic and HbA1c was moderately increased. Her diabetes was fairly well-controlled with a diet therapy and injection of lente insulin. Two and a half months after admission, the course of illness became regressive. Seven months later, external ophthalmoplegia was disappeared and only slight anisocoria was seen. She readmitted to the hospital one year and eleven months later, because of anorexia and emaciation. She died of adenocarcinoma of the stomach without chemotherapy. The duration from onset of ocular symptoms to death was two years and one month. At postmortem examination, stomach cancer infiltrated extensively to the abdominal and pelvic viscera, but no metastasis to the nervous system or intraorbital tissues was found. There were mild to moderate atherosclerotic changes in the small-and middle-sized arteries of the kidneys, pancreas and adrenal glands corresponding to her age. Moderate atherosclerosis was found in all of the major arteries including Willis ring, siphon of the right internal carotid artery and Vertebro-basilar one.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗