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Bronchial stump closure with amniotic membrane in animal model.

Mohajeri G, Omid M, Melali H, Heidarpour M, Jazi AH - J Res Med Sci (2014)

Bottom Line: There was no significant difference in histological healing between two groups.Similarly, no significant difference was observed between the groups in terms of neoangiogenesis based on IHC examination (P value = 0.69).Human amnion allograft could be as effective as pleural patch for BS wrapping following pulmonary resections.

View Article: PubMed Central - PubMed

Affiliation: Department of Thoracic Surgery, Isfahan University of Medical Sciences, Isfahan, Iran.

ABSTRACT

Background: Coverage of the bronchial stumps (BSs) with adjacent tissues can improve healing and reduce bronchial complications in complex thoracic surgery. There is no evidence for the application of human amnion allograft for prevention of air leak from the BS. The comparison of the amniotic membrane (AM) and pleural patch for BS healing after lobectomy in dogs was our aim in this study.

Materials and methods: A total of eight males and females 12-24-month-old dogs between 17 and 22 kg body-weight were used in this study in 2010, Isfahan University of Medical Sciences. Animals were separated into two groups: group A (n = 4; amniotic membrane) and group P (n = 4; pleural patch) according to the BS closure technique performed. After lobectomy of the right middle lobe, the BS was closed, while a small bronchopleural fistula (BPF) was created by inserting a catheter via edges of closed stump. Then, it was covered with a piece of AM3 × 3 cm in group A and with a pedicle graft of pleura in group P. Rethoracotomy was performed after 15 days of observation, and the BS was removed for histological examination. Histological healing was classified as complete or incomplete healing. Neoangiogenesis was measured by Von Willebrand expression using immunohistochemistry (IHC). Data were analyzed by SPSS version 15 using Fisher's exact test, Mann-Whitney test, and T tests.

Results: BPF complications were not seen during observation period. There was no significant difference in histological healing between two groups. Similarly, no significant difference was observed between the groups in terms of neoangiogenesis based on IHC examination (P value = 0.69).

Conclusion: Human amnion allograft could be as effective as pleural patch for BS wrapping following pulmonary resections.

No MeSH data available.


Related in: MedlinePlus

Histology of bronchial stump in group A after surgery (×400)
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Figure 1: Histology of bronchial stump in group A after surgery (×400)

Mentions: Histological examinations revealed complete healing in all BSs in group A. Granulation tissue formation with new vessel formations as well as continued phagocytosis of the suture material was seen around them. There was no evidence of necrosis and abscess and neutrophil infiltration [Figure 1].


Bronchial stump closure with amniotic membrane in animal model.

Mohajeri G, Omid M, Melali H, Heidarpour M, Jazi AH - J Res Med Sci (2014)

Histology of bronchial stump in group A after surgery (×400)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4061641&req=5

Figure 1: Histology of bronchial stump in group A after surgery (×400)
Mentions: Histological examinations revealed complete healing in all BSs in group A. Granulation tissue formation with new vessel formations as well as continued phagocytosis of the suture material was seen around them. There was no evidence of necrosis and abscess and neutrophil infiltration [Figure 1].

Bottom Line: There was no significant difference in histological healing between two groups.Similarly, no significant difference was observed between the groups in terms of neoangiogenesis based on IHC examination (P value = 0.69).Human amnion allograft could be as effective as pleural patch for BS wrapping following pulmonary resections.

View Article: PubMed Central - PubMed

Affiliation: Department of Thoracic Surgery, Isfahan University of Medical Sciences, Isfahan, Iran.

ABSTRACT

Background: Coverage of the bronchial stumps (BSs) with adjacent tissues can improve healing and reduce bronchial complications in complex thoracic surgery. There is no evidence for the application of human amnion allograft for prevention of air leak from the BS. The comparison of the amniotic membrane (AM) and pleural patch for BS healing after lobectomy in dogs was our aim in this study.

Materials and methods: A total of eight males and females 12-24-month-old dogs between 17 and 22 kg body-weight were used in this study in 2010, Isfahan University of Medical Sciences. Animals were separated into two groups: group A (n = 4; amniotic membrane) and group P (n = 4; pleural patch) according to the BS closure technique performed. After lobectomy of the right middle lobe, the BS was closed, while a small bronchopleural fistula (BPF) was created by inserting a catheter via edges of closed stump. Then, it was covered with a piece of AM3 × 3 cm in group A and with a pedicle graft of pleura in group P. Rethoracotomy was performed after 15 days of observation, and the BS was removed for histological examination. Histological healing was classified as complete or incomplete healing. Neoangiogenesis was measured by Von Willebrand expression using immunohistochemistry (IHC). Data were analyzed by SPSS version 15 using Fisher's exact test, Mann-Whitney test, and T tests.

Results: BPF complications were not seen during observation period. There was no significant difference in histological healing between two groups. Similarly, no significant difference was observed between the groups in terms of neoangiogenesis based on IHC examination (P value = 0.69).

Conclusion: Human amnion allograft could be as effective as pleural patch for BS wrapping following pulmonary resections.

No MeSH data available.


Related in: MedlinePlus