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THE EFFECT of PINEALOCTOMY on the DEVELOPING SUPERIOR Cervical GANGLION of the RAT

Authors: Mahmood H. Hamash. محمد حماش --- Fadhil A. Al-khafaji فاضل الخفاجي --- Hadi Jawad Ali هادي جواد علي
Journal: Al-Kindy College Medical Journal مجلة كلية الطب الكندي ISSN: 18109543 Year: 2011 Volume: 7 Issue: 1 Pages: 18-26
Publisher: Baghdad University جامعة بغداد

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Abstract

Back ground: In the present study Pinealoctomywas used to study the sympathetic innervations ofthe pineal gland by the superior cervical ganglion(SCG) of the albino rat.Objective: Following Pinealoctomy, it isexpected to observe the Chromatolysis reaction insome neurons of the SCG if they were to innervatethe pineal gland (i.e. retrograde Chromatolysischanges).Methods: Fifty albino rats were used in this study,Pinealoctomy was done, then after a different timeinterval ganglionectomy was done, in order tostudy the Chromatolysis in their cell body.Result: The present study has demonstrated thatthe most obvious Chromatolysis reaction in theneurons which innervate the pineal gland appearedone day following Pinealoctomy in the young andadult rats. In the SCG of animal, one weekfollowing Pinealoctomy,the number of the Chromatolysis neurons wasmuch less than these seen in the previouslymentioned oneday animals. In (2 – 6) weeks followingPinealoctomy, the number of the Chromatolysisneurons kept a constant decline.Conclusion: The work presented in this studyshowed that the method of tracing the innervationsof the pineal gland by removing the target tissue(the pineal gland in this study) appeared to bejustified and conclusive.It has also shown that younger animals, subjectedto Pinealoctomy, would react more vigorously withrespect to Chromatolysis than adult animals. Thepresent study has also demonstrate that thedistribution of these Chromatolysis neurons and forall age groups all over the ganglion beinginspected. However they were more abundant inthe rostral 2/3 of these ganglions.


Article
Innervation of the pineal gland in the rat: A chromotolysis study

Author: Hadi J. Ali هادي جواد علي
Journal: Al-Kindy College Medical Journal مجلة كلية الطب الكندي ISSN: 18109543 Year: 2011 Volume: 7 Issue: 2 Pages: 142-147
Publisher: Baghdad University جامعة بغداد

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Abstract

Back ground: The innervations of the pineal gland from the superior cervical ganglion have shown some form of a chromatolysis reaction. Objective:1-Tracing the innervations of the pineal gland by removing the target tissue (the pineal gland in this study) i.e. (pinealoctomy) and removal of the superior cervical ganglion i.e. (ganglionectomy).2- The localization and total number of the neurons which project into the rat pineal gland3-The effect of pinealoctomy on the SCG after a different time interval. Methods: Twenty five albino rats were used in this study, Pinealoctomy was done, then after a different time interval ganglionectomy was done, in order to study the Chromatolysis in their cell body. Result: The present study has demonstrated that the chromatolysis reaction in the neurons following Pinealoctomy confirms the innervations of the pineal gland from the SCG. The present study has demonstrated that the most obvious the Chromatolysis reaction occurred one day after pinealoctomy. Conclusion: This study confirms the innervations of the pineal gland from the SCG, the study shows that the distribution of the Chromatolysis neurons; of all age group occurred in all parts of the ganglion; although it was more abundant in the rostal 2/3.

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