Method of improved pp biuret with high sensitivity and accuracy is frequently used in the biochemical techniques to determine the protein in the preparations. The sensitivity of this method was as same as this of method Anson and error of pp biuret was smaller than this of Anson. The pp biuret has been applied in Vietnam to determine the proteolytic activity of pharmaceutical pepsin.
Biuret Reaction ; Pepsin A

The liquid substances extracted from medicinal herb at 0.3% concentration cause to stimulate protease activity of pepsin from 11% to 32% in order: frustus evodiarutaecarpa < fructus and sement amoni xanthiodis < rhizoma zingiber officinale < fructus cirtus sp. < radix sausurea galanga < radix coptis sp. < radix. Sausurea lappa or inula helenium. This liquid substances at 0.25% concentration also cause the stimutation of protease activity of pancreatin from 0.6% to 32% in order: Fructus evodia rutaecarpa< rhizoma keampferia galanga < radix comptix sp. < freuctus citrus sp. < rhizoma zingiber officinale < radix sausurea lappa or inula helenium. Only the liquid substances extracted from the Fructus et semen amomi xanthiodis reduce lightly protease activity of pancreatine preparation. The optimal stimulation of the enzyme activity depends on their concentration. The first results may raise a question about the traditional medicine combined with the western medicine in the treatment of digestive diseases.
Plants, Medicinal ; Pepsin A ; Pancreatin

The reasonable pepsin + papain mix was studied. The results showed that the proteolytic activity of the mix at 3 areas pH: 20.5, 41 and 70.5 and temperature 38O2 was compared with either agent alone in the same conditions. These mixes will be improved and applied to the treatment of malnutrition in children
Peptide Hydrolases ; Enzymology ; Pepsin A ; Papain

OBJECTIVES: To investigate the content of pepsin in salivary, and to assess the laryngophargeal lesions based on the reflux founding score (RFS) scale in asymptomatic volunteers, in order to provide a reference for the diagnosis of laryngopharyngeal reflux. METHODS: A total of 91 asymptomatic subjects were recruited in this study. Participants provided a fasting saliva specimen for pepsin measurement using enzyme-linked immunoadsorbent assay, completed the reflux symptom index (RSI) assessment and underwent laryngostroboscopic examination using a rigid endoscope. Their RFS were graded according to the laryngeal findings. RESULTS: The median concentration of pepsin in 91 asymptomatic volunteers was 55.5 μg/L (range 3.53-191.64 μg/L). The mean individuals RSI was 2.24±2.34, and the mean individuals RFS was 5.78±1.74. CONCLUSIONS Our data demonstrate that certain concentration of pepsin was detected and showed a higher RFS score in asymptomatic volunteers.
Humans ; Laryngopharyngeal Reflux ; diagnosis ; Laryngoscopy ; Pepsin A ; analysis ; Saliva ; chemistry ; Volunteers

PURPOSE: This research was done to confirm the effect of secretin on pepsin secretion and to study whether or not feeding can depress the secretin-stimulated pepsin secretion (SSPS) with its related factors. METHODS: Heidenhain (HP) and Pavlov pouches (PP) were made in 6 dogs and cannulae were then inserted into the pouches. The fluids were collected through the cannula every 10 minutes for 3 hours in various conditions, including resting, feeding, secretin perfusion, acidification of the stom-ach and, gastric distension. A modified Anson's hemoglobin method was used to check the amount of pepsin. RESULTS: When secretin was perfused in the HP, there was no increase of pepsin secretion at 0.1 and 0.2 CU/kg/hr, but the pepsin secretion increased at 0.4 and 1.0 CU/kg/hr. Compared to the control, ANOVA showed significant differences for secretin 0.4 CU/kg/hr (P<0.01) and for secretin 1.0 CU/kg/hr (P<0.001). When milk was administered through the gastric cannula after secretin stimulation, pepsin production increased in the PP, but pepsin secretion in the HP dropped close to the basal level after administering milk. This depression was not related to acidity of the milk. ANOVA showed significant differences for secretin with milk vs milk alone (P<0.0005) and vs secretin alone (P<0.0025). The inhibition of SSPS was not observed with any gastric distension or acid perfusion. CONCLUSION: In the HP, secretin increased the pepsin secretion and the vagus nerve has an inhibitory effect on pepsin secretion under secretin stimulation. Milk feeding depressed the SSPS, and that depression was not related to pH of the food and gastric distension. Further study is needed in order to clarify the mechanism of depression.
Animals ; Catheters ; Depression ; Dogs ; Hydrogen-Ion Concentration ; Milk ; Pepsin A* ; Perfusion ; Secretin* ; Vagus Nerve

Peptic ulcer can occur anywhere in the gastrointestinal tract that contact with acid and pepsin. But usually peptic ulcer occurs at the stomach and duodenum and the location of peptic ulcer are localized to specific area within the stomach and duodenum. So I think that predilection of peptic ulcer to localized area may have clue for releaving the pathogenesis of peptic ulcer. So I studied the location of peptic ulcer for the basic reserch of ulcer pathogenesis by means of dividing stomach into antrum, angle, lower body, middle body, upper body and lesser curvature, anterior wall, greater curvature, posterior wall and duodenum into anterior wall, lesser curvature, posterior wall, and greater curvature. The results obtained were as follows: 1) The chronic gastric ulcer was most common in the angle of lesser curvature (22.9%) and second common in the antrum of lesser curvature (22.3%). 2) The location of chronic and acute gastric ulcer was similar. 3) The proximal migration of ulcer site according to increasing age was not observed. 4) Chronic duodenal ulcer was occurred commonly in the lesser curvature (41.8%) and anterior wall (38.3%). 5) As the age increase, the incidence of chronic duodenal ulcer in the lesser curvature was increased and that of chronic duodemal ulcer in the anterior wall was decreased. 6) Acute ulcer of stomach and duodenum has no predilection site.
Duodenal Ulcer ; Duodenum ; Gastrointestinal Tract ; Incidence ; Pepsin A ; Peptic Ulcer* ; Stomach ; Stomach Ulcer ; Ulcer

For evaluating the boosting (anamnestic) effects of the most recent commercially produced plasma derived heat-inactivated hepatitis B vaccine (A. Co.), 117 adults with naturally acquired antibody to hepatitis B surface antigen (anti-HBs) were selected at random. In addition, out of case immunized at zero and 1 month, and boosted at 6 months (primary booting) by conventional vaccine (B.Co), inactivated by pepsin digestion and formalin treatment, 11 cases who showed elevated titer after primary boosting were also submitted to the study. The results were as follows: 1) Out of the 117 subjects with naturally acquired anti-HBs, 6(5.1%) showed isolated anti-HBs and the titers were below 10 ratio units (RU). Negative seroconversion was seen in 4 (3.4%) of the 117 cases at 12 months after the screening and, of these cases, 3 showed isolated anti-HBs below 10 RU (increased GMT, 28.04) at one month after primary booster injection with 3 microgram dose of A. Co. Vaccine at all, but 90% of the other subjects responded. 3) The anti-HBs titers of all the 11 cases who showed a rise of more than 10 RU (increased GMT, 28.04) at one month after primary booster injection by 20 microgram dose of B. Co. vaccine decreased at 19 months after the primary booster. And 3 subjects (27.3%) of the 11 reached negative seroconversion. All of the 11 cases, who had secondary booster injection with 3 microgram dose of A. Co. vaccine at 19 months after primary boosting, showed increased anti-HBs titer at least 20 RU or more (increased GMT, 57.72) at one month after the boosting. According to the above results in the anti-HBs screening survey for the purpose of immunization with hepatitis B vaccine, subjects with isolated anti-HBs below 10 RU should be regarded as being in an unimmunized state. In cases who are in risk circumstances, immunized primarily with a 20 microgram dose of B. Co. vaccine, a secondary booster injection should be given within 2 years after initiation of primary immunization and a 3 microgram booster dose of A. Co. vaccine can be reliably used.
Adult ; Digestion ; Formaldehyde ; Hepatitis B Surface Antigens* ; Hepatitis B Vaccines ; Humans ; Immunization* ; Mass Screening ; Pepsin A ; Plasma

Acute non-variceal upper gastrointestinal bleeding, the most common etiology of which is peptic ulcer disease, remains a persistent challenge despite a reduction in both its incidence and mortality. Both pharmacologic and endoscopic techniques have been developed to achieve hemostasis, with varying degrees of success. Among the pharmacologic therapies, proton pump inhibitor (PPI) remains the mainstay of treatment with potent acid suppression. Maintenance of the intragastric pH level above 6 by the administration of PPI prevents hemolysis caused by acid or pepsin and thereby promotes aggregation of platelets. Intragastric acid suppression can be achieved more effectively with continuous intravenous infusion of PPI after intravenous bolus injection. A high dose intravenous PPI is effective in reducing the risk of rebleeding, the need for surgery and repeated endoscopy. However, data regarding non-high dose intravenous PPIs are limited. In the future, novel PPIs and potassium-competitove acid blocker are in the area of interest. Combination therapy with the use of endoscopic hemostatic treatment and intravenous PPI administration is known to result in the best outcome for non-variceal upper gastrointestinal bleeding.
Endoscopy ; Hemolysis ; Hemorrhage* ; Hemostasis ; Hydrogen-Ion Concentration ; Incidence ; Infusions, Intravenous ; Mortality ; Pepsin A ; Peptic Ulcer ; Proton Therapy

BACKGROUND: Several keratolytic agents have been used in many dirmatologic conditions such as callus, keratosis palmaris of plantaris, however the evaluation method of the effects of keratolytiic agents has not been good enough in clinical use. OBJECT: We have conducted an investigation to measure the effect of several keratolytic agents using an in vitro model. METHOD: We measured the fegraded protein of keratin by the bui iet method after adding enzymes such as trypsin, pepsin and papain, and irritants, salicylic acid and sodii m lauryl sulfate to the collected callus. RESULT: The order of the keratolytic effect of the enzymes was trypsir >pepsin>papain. It was difficult to detect the keratolytic effect of salicylic acid becaues of color hiidrance and there was an increasing tendency of keratolyti effect of sodium lauryl sulfate, however it was prominent mainly at a high concentration. CONCLUSION: These results suggested that the potency of similar types of keratolytic enzymes such as pepsin, trypsin and papain can be possible. However it was not such a sitable model to check the potency of the keratolytic effect of salicylic acid and the eoncentration tevel may be an important factor for certain kinds of chemicals such as sodium lauryl sulfate.
Bony Callus ; Irritants* ; Keratolytic Agents ; Keratosis ; Papain ; Pepsin A ; Salicylic Acid ; Sodium Dodecyl Sulfate ; Trypsin

Bezoars are conglomerates of vegetable fiber and hair, or concretions of various substances located in the stomach or the intestinal tract. They are classified as phytobezoar, trichobezoar, trichophytobezoar, and concretion. It is shown that the decrease in secretion of pepsin and gastric acid and the delay in gastric emptying might contribute to the formation of bezoars. This case describes the rare complication of the jejunal perforation due to a postgastrectomy bezoar.
Bezoars* ; Gastrectomy ; Gastric Acid ; Gastric Emptying ; Hair ; Intestinal Perforation ; Pepsin A ; Stomach ; Vegetables