Study on Ultra-Structural Numerical Changes in the Intestinal Mucosal Epithelial Cell Microvilli after Excessive Zinc Supplementation in Wistar Rat

2018 ◽  
Vol 6 (2) ◽  
pp. 47-53
Author(s):  
Tanushree Das ◽  
◽  
H.C. Lalramnghaki ◽  
Kshetrimayum Birla Singh ◽  
◽  
...  
Keyword(s):  
Epithelial Cell ◽  
Wistar Rats ◽  
Wistar Rat ◽  
Control Group ◽  
Dependent Manner ◽  
Concentration Dependent Manner ◽  
Group Iii ◽  
Mucosal Epithelial Cell ◽  
Group I ◽  
Group Ii

The present study was aimed to study the ultra-structural numerical changes in the microvilli of intestinal mucosal epithelial cells (IMECs) after excessive Zn supplementation in wistar rats. In this study, three groups of rats were fed on an equicaloric sugar and fat rich semi-synthetic diet containing 20mg (control, group-I), 50mg (group-II) and 80mg Zn /kg (group-III) diet respectively for 4 months. The data of the study revealed an increase in surface area of intestinal absorption site through increase in the number and height of microvilli/cell in Zn concentration dependent manner. Further, the result of the study reveals the presence of higher Zn concentrations in IMECs (tissue) and higher absorption rates (HARs) of 14C-glucose (μmoles/g.5min) and amino acids namely 14C-L-alanine and 14C-L-isoleucine (μmoles/g.5min) in group-II and III than that of control group-I. Thus, high Zn supplementation for a longer period of time alters ultrastructure of intestinal mucosal epithelial cell microvilli and increase absorption of nutrients in wistar rats.

scholarly journals Biochemical Effects of Matured Stem Extract of Opuntia Dillenii in Male Wistar Rats

2018 ◽  
Vol 11 (1) ◽  
pp. 49-58
Author(s):  
Uche C. Njoku ◽  
Benjamin A. Amadi ◽  
Peter U. Amadi ◽  
Onyebuchi E. Ezendiokwere ◽  
Idongesit E. Archibong
Keyword(s):  
Wistar Rats ◽  
Density Lipoprotein ◽  
Control Group ◽  
Group Iii ◽  
Therapeutic Benefits ◽  
Group I ◽  
Male Wistar Rats ◽  
Stem Extract ◽  
Group Ii ◽  
Opuntia Dillenii

Summary The effect of aqueous matured stem extract of Opuntia dillenii on selected biochemical parameters in Male Wistar rats was explored. Standard analytical methods were applied. Forty Wistar rats (80-100g) were used in the animal studies, separated into four groups. The control group was solely administered normal feed and saline, group I was administered 100mgkg−1 of the extract, group II received 300mgkg−1 of the extract and group III received 500 mg/kg−1 of the extract. A significant increase (p<0.05) in the activities of alanine aminotransferase (ALT) and alkaline phosphatase was observed in group II and III rats, as compared with the controls. A significant decrease in urea and creatinine concentrations was found only in group III rats against the controls. Also, a significant (p<0.05) decrease in triglyceride, total cholesterol, and low density lipoprotein (LDL)-cholesterol was seen in group II and group III rats when compared with the control. The hematological evaluation revealed a significant (p<0.05) decrease in red blood cell and hemoglobin levels in group III rats when compared with the control. The findings showed both beneficial and toxicological effects of the plant. Hence, for optimal therapeutic benefits, a further toxicological survey could still be carried out perhaps at higher doses.

scholarly journals GAMBARAN HISTOPATOLOGI HATI TIKUS WISTAR YANG DIBERIKAN JUS TOMAT (Solanum Lycopersicum) PASCA KERUSAKAN HATI WISTAR YANG DIINDUKSI KARBON TETRAKLORIDA (CCl4)

2013 ◽  
Vol 1 (3) ◽  
Author(s):  
Eka Sari Tappi ◽  
Poppy Lintong ◽  
Lily Loho
Keyword(s):  
Carbon Tetrachloride ◽  
Wistar Rats ◽  
Liver Cells ◽  
The Body ◽  
Tomato Juice ◽  
Control Group ◽  
Histopathological Changes ◽  
Group Iii ◽  
Group I ◽  
Group Ii

Abstract: Liver is the largest organ in the abdominal cavity. As the center of metabolism in the body, liver is potentially damaged by exposure of toxic substances, inter alia carbon tetrachloride (CCl4). Metabolism of carbon tetrachloride (CCl4) produces CCl3 free radicals that can damage the liver. In Indonesia, there are a lot of natural ingredients that have antioxidant properties, such as tomato. Lycopene in tomatoes contains antioxidant compounds that can prevent damages due to free radical. This study aimed to obtain liver histopathological changes of wistar rats fed with tomato juice after being induced of carbon tetrachloride (CCl4). This was an experimental study, using 10 wistar rats which were divided into 4 groups. Group I was the negative control; group II was induced with CCl4 0,05 cc/day and was terminated on day 6; group III was induced with CCl4 0,05 cc/day and was given tomato juice 3 ml/day, and terminated on day 13; group IV was induced by CCl4 0,05 cc/day, given regular pellets, and terminated on day 13. The results showed that group II had histopathological changes of the liver indicating fatty liver, meanwhile group III showed regeneration of nearly all liver cells. Conclusion: Administration of tomato juice after the induction of 3 ml carbon tetrachloride (CCl4) for 7 day showed regeneration of almost all liver cells. Keywords: histopathological changes of the liver, carbon tetrachloride, tomato juice.   Abstrak: Hati merupakan organ terbesar dalam rongga abdomen, dan pusat metabolisme tubuh dengan fungsi yang sangat kompleks dan sangat berpotensi mengalami kerusakan akibat terpapar oleh bahan-bahan toksik, salah satunya yaitu karbon tertraklorida (CCL4). Metabolisme CCl4 menghasilkan radikal bebas CCl3 yang dapat merusak hati. Di Indonesia terdapat  banyak sekali bahan-bahan alami yang mempunyai kandungan antioksidan, salah satunya yaitu tomat. Tomat mengandung senyawa likopen sebagai antioksidan yang dapat mencegah kerusakan jaringan akibat radikal bebas. Penelitian ini bertujuan untuk mendapatkan gambaran histopatologi hati tikus wistar yang diberi jus tomat pasca induksi karbon tetraklorida (CCl4). Metode penelitian ialah eksperimental. Sampel sebanyak 10 ekor tikus wistar yang dibagi dalam 4 kelompok. Kelompok I sebagai kontrol negatif; kelompok II diinduksi CCl4 0,05cc/perhari dan diterminasi hari ke-6; kelompok III diinduksi CCl4 0,05 cc/hari kemudian diberikan jus tomat 3ml/hari;  dan kelompok IV diinduksi CCl4 0,05 cc/hari kemudian diberikan pelet biasa dan diterminasi hari ke-13. Hasil penelitian menunjukkan pada pemberian CCl4 pada tikus wistar selama 5 hari terdapat gambaran morfologik perlemakan sel hati. Pemberian jus tomat dosis 3 ml pasca induksi karbon tetraklorida (CCl4) menunjukkan terjadinya regenerasi pada hampir seluruh sel-sel hati. Simpulan: Pemberian jus tomat dosis 3 ml pasca induksi karbon tetraklorida (CCl4) selama 7 hari menunjukkan regenerasi pada hampir seluruh sel-sel hati. Kata kunci: gambaran histopatologi hati, karbon tetraklorida, jus tomat.

scholarly journals Methyl Gallate Attenuates Doxorubicin-Induced Cardiotoxicity in Rats by Suppressing Oxidative Stress

Scientifica ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Akheruz Zaman Ahmed ◽  
Shakta Mani Satyam ◽  
Prakashchandra Shetty ◽  
Melanie Rose D’Souza
Keyword(s):  
Oxidative Stress ◽  
Normal Control ◽  
Wistar Rats ◽  
Group Iv ◽  
Control Group ◽  
Methyl Gallate ◽  
Group Iii ◽  
Group I ◽  
Female Wistar Rats ◽  
Group Ii

Doxorubicin-induced cardiotoxicity is the leading cause of morbidity and mortality among cancer survivors. The present study was aimed to investigate the cardioprotective potential of methyl gallate; an active polyphenolic nutraceutical, against doxorubicin-induced cardiotoxicity in Wistar rats. Twenty-four female Wistar rats (150–200 g) were divided into four groups (n = 6) which consist of normal control (group I), doxorubicin control (group II), test-A (group III), and test-B (group IV). Group III and group IV animals were prophylactically treated with methyl gallate 150 mg/kg/day and 300 mg/kg/day orally, respectively, for seven days. Doxorubicin (25 mg/kg; single dose) was administered through an intraperitoneal route to group II, III, and IV animals on the seventh day to induce acute cardiotoxicity. On the 8th day, besides ECG analysis, serum CK, CK-MB, LDH, AST, MDA, and GSH were assayed. Following gross examination of isolated hearts, histopathological evaluation was performed by light microscopy. A significant ( p  < 0.05) cardiac injury, as well as oxidative stress, was observed in doxorubicin control rats in comparison to normal control rats. Methyl gallate at both the doses significantly ( p  < 0.05) reduced doxorubicin-induced ECG changes, dyslipidaemia, and elevation of CK, CK-MB, LDH, AST, MDA and increased GSH level. Methyl gallate reversed the doxorubicin-induced histopathological changes in the heart. The present study revealed that methyl gallate exerts cardioprotection against doxorubicin-induced cardiotoxicity in female Wistar rats by suppressing oxidative stress. Our study opens the perspective to clinical studies for consideration of methyl gallate as a potential chemoprotectant nutraceutical in the combination chemotherapy with doxorubicin to limit its cardiotoxicity.

scholarly journals PRENATAL AND POSTNATAL EFFECT OF LEAD ACETATE ON THE HISTOLOGY OF FRONTAL CORTEX AND MOTOR ACTIVITY IN WISTAR RATS

2021 ◽  
pp. 10-12
Author(s):  
SALEH NUHU ◽  
HAUWA IDRIS AHMAD ◽  
AISHA MUHAMMAD GARBA ◽  
TASIU ABDULLAHI SULAIMAN
Keyword(s):  
Drinking Water ◽  
Motor Activity ◽  
Frontal Cortex ◽  
Wistar Rats ◽  
Histological Study ◽  
Group Iv ◽  
Control Group ◽  
Group Iii ◽  
Group I ◽  
Group Ii

Objectives: The objective of this study was to find the histologic and motor activity effect of lead on prenatally and postnatally exposed Wistar rats. Methods: In this study, twelve Wistar Rats were used and grouped into four groups of two females and one male. Group I rats served as the control and allowed feed and water freely. The rats in Group II were administered 500ppm of Pb through drinking water from gestation day 8 (GD8) to parturition (GD21). While Group III rats were given 500ppm of Pb in drinking water from postnatal day 1 (PND1) to PND21. The rats in the fourth group (Group IV) were given 500ppm of Pb from GD8 to PND21. Palmer grasp reflex was conducted to assess the motor activity of the rat pups. The animals were then humanely sacrificed and the frontal cortices were isolated for routine histological processing. Results: The histological study has shown normal neurons in the control group while degenerating cells exhibiting karyolysis, pyknosis, karyorrhexis, vacuolation were seen in the lead-treated groups. Group II and Group IV showed considerate deficit in their motor activity while Group III showed mild effect. Conclusion: From this study, lead exposure of Wistar rats at both prenatal and postnatal period of development has effect on the histology of the frontal cortex as well as on their motor activity.

scholarly journals Comparison of health supplement on strength, stamina and growth of rats

2019 ◽  
Vol 8 (4) ◽  
pp. 806
Author(s):  
Swanand S. Pathak ◽  
Nikhil S. Yadav
Keyword(s):  
Wistar Rats ◽  
Tail Length ◽  
Maximum Growth ◽  
Group Iv ◽  
Control Group ◽  
Natural Health ◽  
Group Iii ◽  
Group I ◽  
Group Ii ◽  
Health Supplements

Background: Children require more nutrition as organs grow fast in this age group. Due to abundance of various commercial health supplements in market, parents are often confused about selection of health supplements. Traditional foods are rich source of various nutrients required by growing children. We conducted a study to compare strength, stamina and growth enhancing ability of commercial health supplement and natural health supplement on wistar rats.Methods: Total of 24 wistar rats were included. Animals were divided in four groups. Each group of rats except control group were receiving health supplements. Group I, group II, group III and group IV were receiving health supplement I, health supplement II, natural health supplement and no health supplement (control group) for 60 days. Strength and stamina of wistar rats in each group were analysed using grip strength meter and swim stress test, growth of rats in each group were analysed by measuring body length, tail length and body weight. Group of rat showing maximum growth (body length, tail length and body weight), strength and stamina were analysed.Results: Group II rats showed greater strength and stamina followed by group I, group III and group IV respectively. Group I rats showed maximum growth followed by group II, group III and group IV respectively.Conclusions: In the current study we found that strength and stamina were greater in group II rats followed by group I, group III and group IV respectively also group I rats showed maximum growth  followed by group II, group III and group IV respectively.

scholarly journals GAMBARAN HISTOPATOLOGIK LAMBUNG TIKUS WISTAR SETELAH DIINDUKSI DENGAN ASPIRIN

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Poppy M Lintong ◽  
Lily L. Loho ◽  
Herman Anggran
Keyword(s):  
Lamina Propria ◽  
Food Pellet ◽  
Wistar Rat ◽  
Control Group ◽  
Group Iii ◽  
Group I ◽  
Microscopic Features ◽  
Anti Inflammatory ◽  
Group Ii ◽  
Normal Stomach

Abstract: Aspirin is one of the non-steroid-anti-inflammatory drugs. Its pharmacodynamic effects are as an analgesic, antipyretic, anti-inflammatory, anti-thrombotic, and uricosuric agent. The side effects of aspirin are on the respiratory tract, the gastrointestinal tract, blood, metabolic processes, endocrine functions, pregnancy, hypersensitivity, and drug interaction. The purpose of this study was to evaluate the macroscopic and microscopic features of wistar rat stomachs after the administration of aspirin. This was an experimental study, using nine wistar rats divided into three groups equally. Group I, the control group, was given a food pellet only. Group II was given the pellet, added with aspirin 21 mg daily for 10 days. Group I and Group II were terminated on day 11. Group III was given the pellet, added with aspirin 21 mg/day for 10 days, and was terminated on day 14. All the wistar rat stomachs were examined macroscopically and microscopically. The results showed that the control group had a macroscopically normal stomach architecture, and the mucosa layers and rugae were intact and looked pinkish white. The groups treated with aspirin still showed normal stomach architecture, and the mucosa layers and rugae were intact but looked more palid than that of the control group. Microscopically, the stomach walls of the control group were normal, but groups treated with aspirin for 10 days revealed edema of the lamina propria, dilatation of capillaries; and predominantly neutrophilic infiltration in the lamina propria. Ceasing of aspirin administration showed a resolution of the inflammatory process, marked by diminished infiltration of PMN cells and tisuue edema. Conclusion: Aspirin treatment of 21 mg a day for 10 days revealed histopathologically acute gastritis of the wistar rat stomach walls. The inflammatory reaction was diminished after the cessation of aspirin. Keywords: aspirin, histopathology, stomach.   Abstrak: Aspirin tergolong obat anti-inflamasi non-steroid (AINS) yang secara farmakodinamika mempunyai efek analgesik, anti-piretik, anti-inflamasi, anti-trombotik, dan urikosurik, namun mempunyai efek samping pada saluran  cerna terutama lambung. Penelitian ini bertujuan untuk mendapatkan gambaran histopatologik (makroskopik dan mikroskopik) lambung tikus Wistar setelah pemberian aspirin. Penelitian ini bersifat eksperimental dengan menggunakan sampel sembilan ekor tikus Wistar yang dibagi atas tiga kelompok. Kelompok I (kontrol) terdiri dari tiga ekor tikus yang diberi pelet biasa dan air minum. Kelompok II terdiri dari tiga ekor tikus yang diberi pelet biasa, air minum, dan aspirin dosis 21 mg/hari  selama 10 hari. Pada hari ke-11 kelompok I dan II diterminasi. Kelompok III terdiri dari tiga ekor tikus yang diberikan pelet biasa, air minum, dan aspirin dosis 21 mg/hari selama 10 hari, kemudian aspirin dihentikan dan tikus diterminasi pada hari ke-14. Setelah diterminasi, kelompok I-III diotopsi, diambil organ lambungnya, kemudian dilakukan pemeriksaan histopatologik. Hasil penelitian memperlihatkan makroskopik mukosa lambung tampak lebih pucat sedangkan mikroskopik menunjukkan tanda-tanda radang akut. Penghentian pemberian aspirin diikuti dengan resolusi reaksi inflamasi yang ditandai oleh penurunan infiltrasi sel-sel radang PMN dan edema jaringan. Sinpulan: Pemberian aspirin 21 mg/hari selama 10 hari mengakibatkan terjadinya gambaran histopatologik gastritis akut pada lambung tikus Wistar. Reaksi inflamasi menurun setelah penghentian pemberian aspirin. Kata kunci: aspirin, histopatologi, lambung.

scholarly journals The Alleviative Effect of Vitamin B2 on Potassium Bromate-Induced Hepatotoxicity in Male Rats

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Iftekhar Hassan ◽  
Hossam Ebaid ◽  
Ibrahim M. Alhazza ◽  
Jameel Al-Tamimi
Keyword(s):  
Comet Assay ◽  
Potassium Bromate ◽  
Male Rats ◽  
Control Group ◽  
Histopathological Analysis ◽  
Dependent Manner ◽  
Group Iii ◽  
Group I ◽  
Group Ii ◽  
Dose Dependent

Potassium bromate (PB) is a food enhancer, water disinfection by-product, and a proven carcinogen. It elicits toxicities in the living organism due to exposure and in a dose-dependent manner. The present study discourses the ameliorative efficacy of riboflavin (RF) in PB-administered rodents. The animals were distributed into five treatment groups: control (group I), PB alone (group II, 150 mg/kg), RF alone (group III, 2 mg/kg), PB+RF1 (group IV, 150 mg/kg+2 mg/kg), and PB+RF2 (group V, 150 mg/kg+4 mg/kg). After the round of the treatment, the animals were sacrificed to collect their blood and liver samples for the detailed analysis. Group II depicted perturbed liver functions evidenced by altered serum and toxicity markers along with the disturbed redox balance. Also, these biochemical results were found harmonious with histopathological analysis and comet assay. However, group III showed no noticeable alteration in the same parameters, whereas the combination groups (IV and V) exhibited dose-dependent amelioration in the PB-induced toxicities. Interestingly, RF favored apoptosis concomitant with suppressing the necrosis in the PB-challenged groups, as shown by the activity of caspase-3 and lactate dehydrogenase. Histopathological analysis and comet assay further consolidate these results. Hence, RF has significant alleviative property against PB-induced hepatotoxicity in vivo that can be used in the consumer items containing the toxicant.

scholarly journals Proliferation of odontoblast-like cells following application of a combination of calcium hydroxide and propolis

2019 ◽  
Vol 52 (4) ◽  
pp. 183
Author(s):  
Ira Widjiastuti ◽  
Sri Kunarti ◽  
Fauziah Diajeng Retnaningsih ◽  
Evri Kusumah Ningtyas ◽  
Debby Fauziah Suryani ◽  
...  
Keyword(s):  
Calcium Hydroxide ◽  
Wistar Rats ◽  
Control Group ◽  
Group V ◽  
Propolis Extract ◽  
Group Iii ◽  
Group I ◽  
Occlusal Surfaces ◽  
Significant Difference ◽  
Group Ii

Background: One purpose of operative dentistry is the maintenance of healthy pulp by reducing the need for root canal treatment and the possibility of undesirable scenarios such as tooth loss. Propolis is a plant-derived substance that contains a resin produced by honeybees belonging to the Apis mellifera species. Purpose: This study aimed to investigate the effect of a combination of calcium hydroxide (Ca(OH)2) and propolis extract on odontoblast-like cell proliferation in Wistar rats (Rattus norvegicus). Methods: This research constituted a true experimental laboratory-based investigation with post-test control group design. Thirty Wistar rats were randomly divided into six groups. The first molar pulp of each sample was perforated on occlusal surfaces using a low speed round bur. On day 3, the samples were divided into six groups (n=10): Group I: control; Group II: Ca(OH)2 + 11%; propolis extract; Group III: Ca(OH)2 + aquadest, and on day 7: Group IV: control; Group V: Ca(OH)2 + 11% propolis extract; Group VI: Ca(OH)2 + aquadest. All samples were filled with restorative material. They were subsequently sacrificed after 3 and 7 days post-pulp capping administration and the afflicted tooth extracted for hematoxylin and eosin (H&E) staining. The resulting data was subjected to statistical analysis to ascertain the proliferation of odontoblast-like cells. The significance of differences between the groups was determined by a one-way ANOVA test followed by a post hoc Tuckey HSD. A p-value <0.05 was considered to be significant. Results: On day 3, a significant difference existed between group II (Ca(OH)2–propolis) and group I (control group) and group III (Ca(OH)2–aquades), whereas Ca(OH)2–propolis revealed that the proliferation of odontoblast-like cells was higher. Meanwhile, on day 7, there was a significant difference between all groups whereas, with regard to Ca(OH)2–propolis, the proliferation of odontoblast-like cells in group V was higher. Conclusion: Application of combination of Ca(OH)2-propolis extract can increase the proliferation of odontoblast-like cells in pulp tissue on days 3 and 7.

Meloxicam induced toxicopathology studies in Wistar rats

2019 ◽  
Author(s):  
S. Pramod Bharani ◽  
A. K. Naik ◽  
S. C. Parija ◽  
S. K. Panda
Keyword(s):  
Wistar Rats ◽  
Hematological Parameters ◽  
Clinical Signs ◽  
High Dose ◽  
Dependent Manner ◽  
Group Iii ◽  
Group I ◽  
Anti Inflammatory ◽  
Group Ii ◽  
Dose Dependent

Nonsteroidal anti-inflammatory drugs (NSAIDs) are the most commonly used class of drugs for treating inflammation and pain. Meloxicam has analgesic, anti-inflammatory and antipyretic properties and is a commonly used NSAID in veterinary practice. The present study was done to evaluate effect of meloxicam on toxico-pathological and hematological parameters in Wistar rats. Eighteen Wistar rats were equally divided into three groups i.e. Group I, Group II and Group III. Group I (negative control) rats received only Normal saline (0.9%) @ 1ml/kg. Group II (Low dose) received meloxicam@ 4 mg/kg B.W. and Group III (High dose) rats received meloxicam@8 mg/kg B.W. orally by gavage for 28 days. Dose-dependent clinical signs and lesions were observed after meloxicam treatment. Kidneys and liver were severely hemorrhagic at the high dose, while intestine and stomach had ulcers and erosions. Hematological values were altered after 28 days of administration. Total Erythrocyte Count (TEC), Packed Cell Volume (PCV), Haemoglobin values were decreased and TLC count was significantly increased in both doses of meloxicam treated groups in a dose-dependent manner. It was concluded that meloxicam caused GIT lesions, nephrotoxicity, hepatotoxicity and variation in the hematological parameters at selected dose and duration.

scholarly journals GAMBARAN HISTOLOGI AORTA TIKUS WISTAR DENGAN DIET LEMAK BABI SETELAH PEMBERIAN EKSTRAK DAUN SIRSAK (annona muricata L.)

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Reinaldo Maramis ◽  
Marie Kaseke ◽  
G. N. Tanudjadja
Keyword(s):  
Wistar Rats ◽  
Leaf Extract ◽  
Foam Cell ◽  
Foam Cells ◽  
Control Group ◽  
Group Iii ◽  
Group I ◽  
Group Ii ◽  
Lard Diet ◽  
Control Group Group

Abstract: Soursop leaves contain several antioxidants e.g. flavonoid, vitamin C which have antiatherogenic effect that may inhibit the progression of atherosclerotic lession. The risk factor for atherosclerosis is the consumption of food containing highly saturated fatty acids e.g. lard. Low density Lipoproteins (LDL) will be accumulated within the intima and then be oxidized (LDL-ox). This substances ingested by macrophages, resulting in foam-cell formation. The aim of this study is to find out the histological feature of the aorta of wistar rats having lard diets without the addition of soursop leaf extract; having lard diets along with soursop leaf extract; and with which having lard diets followed by soursop extract. This study used experimental method study consisted of 16 wistar rats dividing into 4 groups: group I without treatment (negative control group), group II using lard diet for 14 days (positive control group), group III using lard diet diet with soursop leaf extract for 14 days (treatment group I), and group IV using lard diet for 14 days, and then followed by soursop leaf extract for 14 days (treatment group II). It was found that the aorta of group I showed foam cells in intima and media layers; in the group II showed foam cells in intima and media layers; group III and IV there were not foam cell in their intima and media layers. Summary: the aorta histological features of wistar rats being given lard diets for 14 days, showed foam cells in intima and media layers. Soursop leaf extract adding to lard diets had effect on decreasing foam cells formation (having protective effect), and the effect of giving lard diets following the addition soursop leaf extract showed a reduction of foam cells formation (having therapeutic effect). Keywords: soursop leaf, lard dietary, foam cell, wistar rat.    Daun sirsak mengandung antioksidan (flavonoid, vitamin C) yang berefek anti-aterogenik, sehingga membuat daun sirsak berkhasiat untuk menghambat perkembangan lesi aterosklerosis. Faktor resiko penyebab aterosklerosis adalah mengonsumsi makanan yang mengandung asam lemak jenuh yang tinggi, antara lain lemak babi. Konsumsi lemak jenuh berlebih dapat mengganggu fungsi sel endotel, sehingga lipoprotein berdensitas rendah (LDL) dapat masuk dan menjadi LDL teroksidasi (LDL-oks). Makrofag menangkap LDL-oks dan menjadi sel busa (lesi dini aterosklerosis). Penelitian ini bertujuan untuk mengetahui gambaran histologi aorta tikus wistar dengan diet lemak babi tanpa pemberian ekstrak daun sirsak, diet lemak babi bersamaan dengan pemberian ekstrak daun sirsak, dan setelah diet lemak babi dilanjutkan pemberian ekstrak daun sirsak. Penelitian bersifat eksperimental. Subjek penelitian terdiri dari 16 ekor tikus wistar yang dibagi menjadi empat kelompok: kelompok I tanpa perlakuan (kelompok kontrol negatif); kelompok II dengan diet lemak babi selama 14 hari (kelompok kontrol positif); kelompok III dengan diet lemak babi serta pemberian ekstrak daun sirsak selama 14 hari (kelompok perlakuan I); kelompok IV dengan diet lemak babi selama 14 hari, dilanjutkan pemberian ekstrak daun sirsak selama 14 hari (kelompok perlakuan II). Hasil penelitian memperlihatkan gambaran histologi aorta tikus wistar kelompok I tampak sel-sel busa pada lapisan intima dan media; pada kelompok II terdapat sel-sel busa; pada kelompok III dan IV tidak terdapat sel busa. Simpulan: tikus wistar dengan diet lemak babi selama 14 hari memperlihatkan gambaran histologi aorta tikus wistar terdapat sel busa pada tunika intima dan tunika media. Pemberian ekstrak daun sirsak bersamaan dengan diet lemak babi berefek menurunkan jumlah sel busa  (efek protektif). Pemberian ekstrak daun sirsak setelah diet lemak babi selama 14 hari berefek mengurangi jumlah sel-sel busa yang terbentuk (efek terapi). Kata kunci: daun sirsak, diet lemak babi, tikus wistar.

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