ON RAT SERUM AMYLASE I. STUDIES IN THE NORMAL AND THE ALLOXAN DIABETIC ANIMAL

1953 ◽  
Vol 31 (5) ◽  
pp. 377-386
Author(s):  
Jules Tuba ◽  
G. Stuart Wiberg
Keyword(s):  
Food Intake ◽  
Food Consumption ◽  
Serum Amylase ◽  
Amylase Activity ◽  
Female Rats ◽  
Rat Serum ◽  
Male And Female ◽  
Daily Food Intake ◽  
Male And Female Rats ◽  
Daily Food

A dextrinogenic micromethod was used to establish serum amylase levels in adult male and female rats which were maintained on a standard laboratory diet. A highly significant difference was found to exist between the activities of the enzyme in the male and female rats. The effect of fasting, and of limiting food consumption, indicated a highly significant correlation between daily food intake and serum amylase levels. The polyphagia manifested by alloxan diabetic rats was not reflected in abnormally high amylase activity, as might be expected, but there was a departure from the normal response to the levels of food ingested each day. Oestradiol dipropionate and testosterone propionate were injected into normal male and female rats for seven days. Treatment with male hormone produced no significant variation in food consumption or serum amylase activity in either sex. Injections with oestradiol resulted in significantly lowered food intake in both sexes, but only in the case of males was there an accompanying fall in enzyme levels. On the basis of the experiments described in this paper it is seen that rat serum amylase consists of two fractions, and that the major portion may be considered to be of an adaptive nature. This adaptive portion appears to a large measure to be a reflection of the total daily food intake, which may be influenced by certain factors, such as sex hormones and alloxan diabetes.

The anorectic effect of fenfluramine is influenced by sex and stage of the estrous cycle in rats

2005 ◽  
Vol 288 (6) ◽  
pp. R1486-R1491 ◽  
Author(s):  
Lisa A. Eckel ◽  
Heidi M. Rivera ◽  
Deann P. D. Atchley
Keyword(s):  
Food Intake ◽  
Estrous Cycle ◽  
Female Rats ◽  
Male Rats ◽  
Gonadal Hormone ◽  
Estrous Female ◽  
Male And Female Rats ◽  
Daily Food ◽  
Hormone Status ◽  
Anorectic Effect

The controls of food intake differ in male and female rats. Daily food intake is typically greater in male rats, relative to female rats, and a decrease in food intake, coincident with the estrous stage of the ovarian reproductive cycle, is well documented in female rats. This estrous-related decrease in food intake has been attributed to a transient increase in the female rat's sensitivity to satiety signals generated during feeding bouts. Here, we investigated whether sex or stage of the estrous cycle modulate the satiety signal generated by fenfluramine, a potent serotonin (5-HT) releasing agent. To examine this hypothesis, food intake was monitored in male, diestrous female, and estrous female rats after intraperitoneal injections of 0, 0.25, and 1.0 mg/kg d-fenfluramine. The lower dose of fenfluramine decreased food intake only in diestrous and estrous females, suggesting that the minimally effective anorectic dose of fenfluramine is lower in female rats, relative to male rats. Although the larger dose of fenfluramine decreased food intake in both sexes, the duration of anorexia was greater in diestrous and estrous female rats, relative to male rats. Moreover, the magnitude of the anorectic effect of the larger dose of fenfluramine was greatest in estrous rats, intermediate in diestrous rats, and least in male rats. Thus our findings indicate that the anorectic effect of fenfluramine is modulated by gonadal hormone status.

scholarly journals A Study of the Nutritional Behavior and Body Mass Indexes for Students of Age (17-25) Years In Baghdad, Iraq.

2009 ◽  
Vol 6 (3) ◽  
pp. 480-487
Author(s):  
Baghdad Science Journal
Keyword(s):  
Body Mass Index ◽  
Food Intake ◽  
Body Mass ◽  
Normal Weight ◽  
Arab Countries ◽  
Male And Female ◽  
Daily Food Intake ◽  
Nutritional Behavior ◽  
Daily Food ◽  
Personal Meeting

The aim of this study was to assess the nutritional status for samples at the age of 17-15 years. These samples were taken from secondary schools and universities in Baghdad area, 123 of them were male and 261 were female. Data on weight, height and body mass index (BMI) were determined in each individual. Smaller sample of 215 individuals (male and female) from the original sample was taken in order to record their nutritional behavior and daily food intake during the 24 hours prior to the visit through personal meeting using special questionnaire. The results showed that the weight and the height were within the range of the people of neighboring Arab countries, who are in the same age. Beside 44.4- 55.95% of these samples were within the normal weight using body mass index. Percentages of obesity and overweight were between 43.5- 6.5% for male and female respectively. There was an increase in daily food intake in general for essential diet and energy indeed, as recorded in nutritional behavior. 67% of samples have their breakfast every day. There were 51% of the samples having snacks (additional meal) between the major meals everyday and 62% have beverages every day. Also high percentage of samples were having milk and its products, vegetables, fruits (as nutritional sources) every day and the percentages were 47%, 67%, 78% respectively. In general their nutritional behavior and daily food intake were within the limits which showed by American recommended daily dietary, still there was some incorrect nutritional behavior which need more education and learning about nutrition.

scholarly journals The effects of novelty on food consumption in male and female rats

2020 ◽  
Vol 223 ◽  
pp. 112970
Author(s):  
Eliza M. Greiner ◽  
Gorica D. Petrovich
Keyword(s):  
Food Consumption ◽  
Female Rats ◽  
Male And Female ◽  
Male And Female Rats

scholarly journals Effect of chronic infusion of olanzapine and clozapine on food intake and body weight gain in male and female rats

Life Sciences ◽  
2007 ◽  
Vol 81 (12) ◽  
pp. 1024-1030 ◽  
Author(s):  
SuJean Choi ◽  
Briana DiSilvio ◽  
JayLynn Unangst ◽  
John D. Fernstrom
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Food Intake ◽  
Body Weight Gain ◽  
Female Rats ◽  
Male And Female ◽  
Male And Female Rats ◽  
Chronic Infusion

Age Changes in Secretory Function of Male and Female Rat Parotid Glands in Response to Methoxamine and Pilocarpine

1988 ◽  
Vol 67 (3) ◽  
pp. 565-573 ◽  
Author(s):  
A. Inanaga ◽  
T. Habu ◽  
E. Tanaka ◽  
T. Taniguch ◽  
T. Nishiura ◽  
...  
Keyword(s):  
Amino Acid ◽  
Inorganic Phosphate ◽  
Amylase Activity ◽  
Salivary Flow ◽  
Female Rats ◽  
Female Rat ◽  
Parotid Glands ◽  
Male And Female ◽  
Male And Female Rats ◽  
Age And Sex

Saliva secreted in response to methoxamine and pilocarpine was collected from the cannulated ducts of both parotid glands of male and female rats at weekly age intervals from three to 10 weeks, and at 3.5, 8, and 15 months of age. It was analyzed for the concentrations of protein, potassium, calcium, inorganic phosphate, and for amylase activity. The types of protein were determined electrophoretically, and an amino acid analysis of the total protein was also carried out. The wet weights of the glands increased substantially up to eight weeks of age, then reached almost plateau values, and finally tended to decrease at 15 months of age in both sexes. The salivary volumes secreted in response to methoxamine and pilocarpine were positively correlated with the parotid gland weights in both sexes. The concentrations of protein, potassium, and inorganic phosphate were inversely related to the salivary flow rates only at relatively low rates of flow. The amylase activity was positively correlated with the concentration of protein, independent of the nature of the stimulus, age, and sex. With methoxamine as a stimulus, the amylase activity was positively correlated with the concentration of calcium, independent of age and sex. The types of protein and amino acid concentrations were independent of the nature of the stimulus, age, and sex up to 15 months of age. However, in parotid saliva of several rats at 8 and 15 months of age, unusual proteins were observed electrophoretically, independent of the nature of the stimulus and sex.

Feeding Ecology of the Nocturnal Gecko Hemidactylus brookii in Ghana

1980 ◽  
Vol 1 (3) ◽  
pp. 269-276 ◽  
Author(s):  
R.A. Avery
Keyword(s):  
Food Intake ◽  
Food Consumption ◽  
Feeding Ecology ◽  
Daily Intake ◽  
Live Weight ◽  
Dry Weight ◽  
Wet Season ◽  
Daily Food Intake ◽  
Daily Food ◽  
The Relationship

AbstractThe diet of Hemidactylus brookii captured at Legon, Ghana, during July was composed entirely of arthropods; Lepidoptera larvae and cockroaches formed 40% of the total weight of food. Daily food intake during the dry season estimated from production of excretory urates was equivalent to that of small diurnal lizards, and given by the relationship F = 20.9W0.51 where F = food consumption in mg dry weight per day and W = live weight in grams. Daily intake during the wet season was variable and often reduced.

Effects of wheel running on food intake and weight gain of male and female rats

1982 ◽  
Vol 28 (5) ◽  
pp. 899-903 ◽  
Author(s):  
Kumpei Tokuyama ◽  
Masayuki Saito ◽  
Hiromichi Okuda
Keyword(s):  
Weight Gain ◽  
Food Intake ◽  
Wheel Running ◽  
Female Rats ◽  
Male And Female ◽  
Male And Female Rats

scholarly journals Potential of Eucalyptus Oil as Repellent against House Rat,Rattus rattus

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Neena Singla ◽  
Ramandeep Kaur Thind ◽  
Amrit Kaur Mahal
Keyword(s):  
Food Consumption ◽  
Rattus Rattus ◽  
Female Rats ◽  
Repellent Effect ◽  
Male And Female ◽  
Eucalyptus Oil ◽  
Male And Female Rats ◽  
Electric Cables ◽  
Packaged Food ◽  
Daily Application

Rodent repellents are chemicals which by taste or odour or possibly by both will prevent animal from feeding or gnawing. Such substances may be used in protecting an area from rodent infestation or in protecting packaged food, packing materials, electric cables, and other important vulnerable materials. Mature and healthy house rat,Rattus rattusof both sexes, was exposed to 5, 10, and 20% eucalyptus oil applied as spray in laboratory pens in bichoice tests. Each concentration was applied through three different modes of application, that is, daily, once, and alternatively in a week. Repellent effect of the oil was assessed based on food consumption from treated and untreated sides for four days. In overall, food consumption was significantly (P<0.0001) low from treatment side compared to the untreated side indicating significant repellent effect of the oil at all the three concentrations tested. Repellent effect of the oil was, however, not found to differ significantly between the two sexes. Percent repellency in both male and female rats was apparently more with daily application of 5 and 10% eucalyptus oil. Present studies reveal the potential of eucalyptus oil in repelling awayR. rattus; however, further studies may be conducted to enhance the persistence of repellent effect for longer period of time.

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