scholarly journals The growth and variability in the body weight of the albino rat

1915 ◽  
Vol 9 (10) ◽  
pp. 751-776 ◽  
Author(s):  
Helen Dean King
Keyword(s):  
Body Weight ◽  
The Body ◽  
Albino Rat

Effect of Clomiphene Citrate and Letrozole on Body Weight of female Albino Rat for Consecutive 1-4 Estrous Cycles

2021 ◽  
Vol 15 (11) ◽  
pp. 2938-2941
Author(s):  
Fauzia Qureshi ◽  
Syeda Rizwana Jafri ◽  
Hafiza Sadia Ahmad ◽  
Uzma Waseem ◽  
Ursula Akif ◽  
...  
Keyword(s):  
Body Weight ◽  
Estrous Cycle ◽  
Ovulation Induction ◽  
Clomiphene Citrate ◽  
The Body ◽  
Control Group ◽  
Albino Rats ◽  
Albino Rat ◽  
Estrous Cycles ◽  
Experimental Group

Background: Ovulation induction with clomiphene citrate in women with infertility has been practiced more than 40% years but in infertile patients this treatment plan proved to be ineffective with multiple complication. Body weight plays an important role modulating reproductive development and functioning. Aim: To observe the effects on body weight of female albino rat after use of clomiphene citrate and letrozole for consecutive 1-4 estrous cycles Method: Eighty four adult female Albino rats were equally divided into three groups for this research. Body weight of each rat was measured before and after the experiment. Vaginal smear cytology of each rat was performed to study different phases of estrous cycle. Control group A was given normal saline orally , In Experimental group B rats were given letrozole (Femara) at dose 5mg/kg orally and in Experimental group C rats were given clomiphene citrate at dose 100ug/kg orally. Results: Significant weight gain is observed in rats taking clomiphene citrate as compared to letrozole Conclusion : Comiphene citrate directly affects the body weight which indirectly reduces the ovulation induction and pregnancy rate. Letrozole is good alternate for ovulation induction and for CC resistant patients. Keywords: Estrous cycle, body weight, citrate and letrozole

341. STUDY OF APHRODISIAC DRUG ACID PHOS ON MALE ALBINO RAT

2010 ◽  
Vol 22 (9) ◽  
pp. 141
Author(s):  
C. K. I. Deshmukh
Keyword(s):  
Body Weight ◽  
Seminal Vesicle ◽  
Recovery Period ◽  
Seminal Vesicles ◽  
The Body ◽  
Seminiferous Tubules ◽  
Albino Rat ◽  
Group I ◽  
Body Weights ◽  
Liver And Kidney

The male albino rat, Rattus norvegicus maintained in the laboratory by supplying regularly food and water. Acid phos is a well known aphrodisiac drug from homeopathy medical system. Doses of 200 gm of 30 number globules made from sugar of milk and moistened by 15 mL of acid phos (H3PO3) of 6 potency. Group-I, II and III experimental rats were carried out for 15, 30, and 15 day recovery period respectively. Appreciable behavioral changes and changes in the body weights were noticed. In 15, 30 and in 15 days of recovery period, the acid phosphatase, SGOT and albumin were significant (P < 0.05) while alkaline phosphatase, SGPT, cholesterol, glucose, total proteins and globulin was found non-significant but A:G ratio was increasedsignificantly in 30 days of treatment. The weight of liver, kidney, and testis has found linear increased relationship with the body weight but significant (P < 0.050) increased in the weight of seminal vesicle and body weight in the experimental rat. Various histo-architectural changes were observed in the tissues of liver, kidney, testis and seminal vesicle. Both liver and kidney showed degenerative changes after 15 and 30 days .Tetraploid stages of liver pernchymal cells were predominant in the experimental rats while in 15 days of recovery period, both attained the recovery. In 30 days, the diameter of seminiferous tubules is markedly reduced, with thin unfolded mucosa. In 15 days of administration of acid phos, the intertubular spaces between the seminiferous tubule were also reduced. The number of spermatids was increased in recovery period, the testis showed the recovery. In 15 days of administration, the secretion in the lumen of seminal vesicles increased related with the structure of the epithelium of seminal vesicles while in 15 days of recovery period, the seminal vesicles showed recovery of secretory activities with pseudostratified epithelium. All the results are discussed detailed in paper.

scholarly journals ORGAN WORK AND ORGAN WEIGHT

1939 ◽  
Vol 69 (3) ◽  
pp. 467-483 ◽  
Author(s):  
Florence Walter ◽  
T. Addis
Keyword(s):  
Body Weight ◽  
Organ Weight ◽  
The Body ◽  
Heart Weight ◽  
Albino Rats ◽  
Liver Protein ◽  
Kidney Weight ◽  
Albino Rat ◽  
Liver Size ◽  
Rate Of Growth

1. The ratios between the rates of growth of the body and of the heart, kidneys, and liver are approximately uniform between 40 gm. body weight and the body weight at maturity in the albino rat. The male and female hearts grow at 0.75 times the rate of growth of the body, the male kidneys at 0.717 times, the female kidneys at 0.648 times, and the liver at 0.838 times the rate of growth of the body as a whole. 2. Formulas for the prediction of organ weight from body weight were derived from the data on 1591 albino rats kept under constant conditions. 3. A series of experiments in which dietetic and metabolic variables were introduced into otherwise constant conditions showed that the heart weight was not affected by diet, and that both kidney weight and weight of liver protein (used as a measure of effective liver size) varied in the direction of change in the protein content of the diet. Decrease in rate of metabolism induced by thyroidectomy and increase in metabolism following the administration of thyroxin led to a corresponding fall and rise of heart, kidney, and liver protein weight. These results were confirmed in experiments on fasted rats with the exception that under these conditions thyroidectomy did not appreciably decrease liver protein weight relatively to fasted controls. Increase in organ metabolism due to dinitrophenol had no effect on organ weight. 4. When experimental changes alter the composition of the body with respect to fat or water, the comparison of experimental and control organ weights in terms of any one function of body weight is fallacious. 5. Conditions that change kidney weight usually change liver protein weight in the same direction and roughly to the same degree. The possible meaning of two exceptions to this rule is discussed. 6. The observations made are regarded as supporting the hypothesis that, after weaning, change in the weight of the heart, kidney, and liver protein is determined mainly by change in the amount of work done by these organs.

scholarly journals Selected blood parameters altered by different doses of pesticide Malathion in albino rat (Rattus-norvegicus)

2020 ◽  
Vol 21 (3) ◽  
pp. 93-103
Author(s):  
C.D. Sharma ◽  
Neha Shukla ◽  
Geeta Bansal
Keyword(s):  
Body Weight ◽  
Hematological Parameters ◽  
Blood Parameters ◽  
Control Agent ◽  
The Body ◽  
Hematological Parameter ◽  
Albino Rats ◽  
Albino Rat ◽  
Toxicological Effects ◽  
Different Doses

Organophosphate pesticides Malathion used as pest control agent in agriculture, household, kitchen and other places. Malathion is found in market with different trade names. It is used with its action properties against various insects and pest. It is used with the largest group of poisonous substances that are widely broadcast today. Present study is based on the effects of different doses of Malathion on routine hematological parameters like RBCs, WBCs, Hb%, CT, PT, ESR, PCV, MCV, MCH, and MCHC. Four doses were selected according to the body weight of albino rats. The doses were selected as four types on the basis of per kilogram body weight of albino rat. They were 25, 50, 75,100 mg per Kg body weight for 7 and 15 days of treatment.The findings indicate that the above parameter fluctuates significantly as amount of dose increases. Hematological parameter indicates that the total body of the animals gets affected by the Malathion. It causes various other toxicological effects on the body of albino rats. There was a combined study of male and female albino rats.

Dependence of Body Weight on Age for Random-Bred Albino Rat and for Eight Lines of Laboratory Rat: Synthetic Studies of Data from Experimental Works and Nurseries in Aspect of the Relationship with Radiosensitivity. Some Characteristics of Rat Species

2018 ◽  
Vol 63 (2) ◽  
pp. 15-17 ◽  
Author(s):  
А. Котеров ◽  
A. Koterov ◽  
Л. Ушенкова ◽  
L. Ushenkova ◽  
Э. Зубенкова ◽  
...  
Keyword(s):  
Body Weight ◽  
Time Moment ◽  
The Body ◽  
Practical Significance ◽  
Published Data ◽  
Sprague Dawley ◽  
Albino Rat ◽  
Experimental Works ◽  
Long Evans ◽  
Wistar Kyoto

For random-bred albino rat and for eight most known rat lines (Wistar, Wistar Hannover, Wistar Kyoto, Sprague Dawley, Lewis, Fisher 344, Lister and Long-Evans) a brief review of the origins and features was made, and data on the age–weight dependences in norm obtained from experimental works and presented in the materials of firms and nurseries were analysed. The data extracted from the sources by digitizing the original curves or taken from there from the tables were combined (Mean ± 95% Confidence Intervals), and the values were compared in parallel along the Student’s t-test and the Mann–Whitney U-test. For half the rat lines (males and females) it was found that the body weight growth in works and nurseries does not coincide (statistically significant or in the form of distinct trends), and the discrepancy can began either from a certain time moment (Wistar Hannover, Sprague Dawley), or almost immediately after birth (Lewis, Long-Evans). The detected phenomenon has practical significance for the object selection for radiosensitivity investigation. Differences in age at the same weight of animals in the experiment and in nurseries can cause errors in background radioresistance. A review of the studies on dependence of the radiosensitivity on the age of irradiated rats was performed with the reproduction of a number of published data in a graphic form and it was concluded that a mistake in the age of rats even for a few weeks can strongly affect the radiosensitivity. It is noted that the importance of taking into account the body mass index is due to the dependence on it of the mass of internal organs, the magnitude of which is affected, among other things, on the results of internal dosimetry. Distribution by growth intensity (an age of achievement of weight 200 g) for males is follows: Wistar > Sprague-Dawley = Lister > Long-Evans (from nurseries) > Wistar Hannover > Lewis > Wistar Kyoto > Fisher 344 > Long-Evans (from works) > Wistar from 1906–1932 > random-bred albino. As a result of the study, standard, tabular growth curves for random-bred rat and eight mentioned rat strains obtained by combining and statistical processing of data from all available sources were also presented. This material continues the traditions of Donaldson’s Tables (H.H. Donaldson, 1915) and the growth standards for laboratory animal lines in work of S.M. Poiley (1972). The report of the individual data by some characteristics of a rat species is presented: average life expectancy, age and weight for various physiological periods of the development, and also a certain ‘standard’ weight for a rat as a species.

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