Lipidic profile among rats submitted to total splenectomy isolated or combined with splenic autotransplant

Simões, Fernanda Correia; Marques, Ruy Garcia; Diestel, Cristina F.; Caetano, Carlos Henrique Soares; Dinis, Ana Paula Gonçalves; Horst, Nara Limeira; Neto, José Firmino Nogueira; Portela, Margareth Crisóstomo

doi:10.1590/s0102-86502007000700010

Cited by 20 publications

(19 citation statements)

References 12 publications

(31 reference statements)

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“…Concluded that the spleen has a role in lipid metabolism in rats and may therefore influence atherosclerosis. Simões et al 30 studied the lipidic profile in rats submitted to splenectomy isolated or combined with splenic autotransplant. Their findings showed that isolated splenectomy alters lipids metabolism in rats fed with standard chow and, splenic autotransplantation is effective in restoring its control.…”

Section: Discussionmentioning

confidence: 99%

Late histological aspects of spleen autologous transplantation in rats

et al. 2008

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Purpose:To evaluate macro and microscopically the late evolution of autotransplants of fragments of spleen in the greater omentum, mesenterium and peritoneal cavity, after 24 weeks of observation. Methods: Fifty two Wistar rats were used, males and adults, submitted to total splenectomy and divided in four groups. The group I -seventeen animals with implant of spleen fragment in the peritoneal cavity; group II -eighteen animals with implant in the omentum and group III -seventeen animals with implant fixed in mesenterium root. The group control (group IV) was formed by eight animals chosen aleatorily among the three groups. It was analyzed macro and microscopically the evolution of the implant, and in the histological study qualitative and quantitative criteria were adopted, with the counting of no cellular e cellular elements. Results: It was observed adherences to the adjacent tissues and vascularization in all of the fragments transplanted. The group I presented white pulp and preserved vascularization. In the group II were observed white pulp with follicular formations and lymphoid tissue preserved, and the red pulp in cordon aspect and hemorrhagic. In the group III were observed with depletion of white and red pulp, while others evidenced better preservation of the pulps. The counting of lymphocytes revealed significant difference between the groups I and IV and the group III and IV (p < 0.05). The counting of active macrophages revealed significant difference between the groups II and III (p < 0.05) and similarity between II and IV (p > 0.05). The other elements: active macrophages phagocyting hemosiderine, plasmocytes, fibroblasts, fibrocytes, giant cells, monocytes, interstitial spaces and fibers of collagen, did not show significant difference among the groups. Conclusions: The splenic autotransplantation is feasible, being the better place the greater omentum. This research demonstrated through qualitative and quantitative histological analysis that the splenic tissue autotransplanted in the omentum of Wistar rats preserves its function of defense of the organisms. Key words: Spleen. Transplantation, Autologous. Macrophages. Rats. RESUMO Objetivo:Avaliar macro e microscopicamente a evolução tardia do autotransplante de fragmentos de baço no grande epiplon, mesentério e cavidade peritoneal, após 24 semanas de observação. Métodos: Foram utilizados 52 ratos Wistar, machos e adultos, submetidos a esplenectomia total e divididos em quatro grupos. O grupo I -dezessete animais com implante de fragmento de baço solto na cavidade peritoneal; grupo II -dezoito animais com implante no grande epiplon e grupo III -dezessete animais com implante fixado na raiz do mesentério. O grupo controle (grupo IV) foi formado por oito animais escolhidos aleatoriamente entre os três grupos. Foram analisados macro e microscopicamente a evolução do implante, sendo que no estudo histológico foram adotados critérios qualitativos e quantitativos, com a contagem de elementos celulares e não celulares. Resultados: Foram observ...

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Section: Discussionmentioning

confidence: 99%

Late histological aspects of spleen autologous transplantation in rats

et al. 2008

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“…Serum levels of total cholesterol (TC), triglycerides (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), and very-low-density lipoprotein (VLDL) were analyzed in the adult offspring using Biosystem commercial test kits (Simões et al 2007).…”

Section: Lipid Profilementioning

confidence: 99%

Short- and long-term effects of maternal nicotine exposure during lactation on body adiposity, lipid profile, and thyroid function of rat offspring

Oliveira

Moura²,

Santos-Silva³

et al. 2009

Journal of Endocrinology

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Epidemiological studies show a higher prevalence of obesity in children from smoking mothers and smoking may affect human thyroid function. To evaluate the mechanism of smoking as an imprinting factor for these dysfunctions, we evaluated the programing effects of maternal nicotine (NIC) exposure during lactation. Two days after birth, osmotic minipumps were implanted in lactating rats, divided into: NIC (6 mg/kg per day s.c.) for 14 days; Control -saline. All the significant data were P!0 . 05 or less. Body weight was increased from 165 days old onwards in NIC offspring. Both during exposure (at 15 days old) and in adulthood (180 days old), NIC group showed higher total fat (27 and 33%). In addition, NIC offspring presented increased visceral fat and total body protein. Lipid profile was not changed in adulthood. Leptinemia was higher at 15 and 180 days old (36 and 113%), with no changes in food intake. Concerning the thyroid status, the 15-days-old NIC offspring showed lower serum-free tri-iodothyronine (FT 3 ) and thyroxine (FT 4 ) with higher TSH. The 180-days-old NIC offspring exhibited lower TSH, FT 3 , and FT 4 ). In both periods, liver type 1 deiodinase was lower (26 and 55%). We evidenced that NIC imprints a neonatal thyroid dysfunction and programs for a higher adiposity, hyperleptinemia, and secondary hypothyroidism in adulthood. Our study identifies lactation as a critical period to NIC programing for obesity, with hypothyroidism being a possible contributing factor.

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“…Currently, the importance of splenic tissue as a major regulator of immune and hematopoietic functions is undeniable. Well-designed studies have revealed an important splenic influence on lipid metabolism 16 , showing the association of splenectomized patients with various diseases such as atherosclerosis and others, caused by lipid deposits, such as Gaucher and Faber diseases 2 .…”

Section: Results Results Results Resultsmentioning

confidence: 99%

Effects of splenic allograft in lipid profile of non-splenectomized rats: the immune and metabolic role of the "double spleen"

Gonçalves

Yamaki

Feijó

et al. 2014

Rev. Col. Bras. Cir.

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Gonçalves Gonçalves Gonçalves Gonçalves GonçalvesEffects of splenic allograft in lipid profile of non-splenectomized rats: the immune and metabolic role of the "double spleen"Original Article Original Article Original Article Original Article Original Article Effects of splenic allograft in lipid profile of non-splenectomized Effects of splenic allograft in lipid profile of non-splenectomized Effects of splenic allograft in lipid profile of non-splenectomized Effects of splenic allograft in lipid profile of non-splenectomized Effects of splenic allograft in lipid profile of non-splenectomized rats: the immune and metabolic role of the "double spleen" rats: the immune and metabolic role of the "double spleen" rats: the immune and metabolic role of the "double spleen" rats: the immune and metabolic role of the "double spleen" rats: the immune and metabolic role of the "double spleen"Efeitos do aloenxerto esplênico no lipidograma de ratos não esplenectomizados: Efeitos do aloenxerto esplênico no lipidograma de ratos não esplenectomizados: Efeitos do aloenxerto esplênico no lipidograma de ratos não esplenectomizados: Efeitos do aloenxerto esplênico no lipidograma de ratos não esplenectomizados: Efeitos do aloenxerto esplênico no lipidograma de ratos não esplenectomizados: papel imunológico e metabólico do "baço duplo" papel imunológico e metabólico do "baço duplo" papel imunológico e metabólico do "baço duplo" papel imunológico e metabólico do "baço duplo" papel imunológico e metabólico do "baço duplo" (1), total splenectomy group (2), splenectomy and implantation of allograft group (3) and double spleen group (4). Each group was subdivided into two subgroups: A and B, based on the death of the animals after 30 or 120 days of monitoring. The procedures in groups 2, 3 and 4 were made simultaneously, and splenectomized animals, groups 2 and 3 were donors, respectively, for the animals of groups 3 and 4. In group 4 the spleen was preserved and the animals received implants from the spleens of rats from group 3. The regeneration of splenic tissue was evaluated by macroscopic and microscopic analyzes of the grafts and own spleens, as well as with measurements of VLDL, HDL, LDL, total cholesterol and triglycerides. Results Results ResultsResults Results: after 120 days, Group 4 showed levels of total cholesterol and LDL lower than the other groups. Group 1 had higher levels of lipids. Conclusion Conclusion Conclusion Conclusion Conclusion: The technique of double spleen was effective in the control of lipid metabolism, corroborating the function of the spleen as a reserve of lipids.

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Lipidic profile among rats submitted to total splenectomy isolated or combined with splenic autotransplant

Abstract: Our findings suggest that isolated total splenectomy alters lipids metabolism in rats fed with standard chow and splenic autotransplantation is effective in restoring its control.

Cited by 20 publications

References 12 publications

Late histological aspects of spleen autologous transplantation in rats

Late histological aspects of spleen autologous transplantation in rats

Short- and long-term effects of maternal nicotine exposure during lactation on body adiposity, lipid profile, and thyroid function of rat offspring

Effects of splenic allograft in lipid profile of non-splenectomized rats: the immune and metabolic role of the "double spleen"

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