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KMID : 0383119570050010081
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Journal of Aerospace Medicine
1957 Volume.5 No. 1 p.81 ~ p.99
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Studies on Relationships between the Peripheral Autonomic and Cutaneous Sensory Nerves
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Abstract
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In lumbosacral sympathetic ganglionectomized cases of causalgia, frost-bite and hemiplegia etc. appreciable increase of cutaneous sensibility is noticed in the lower limb on the operated side. Paravertebral block of the upper dorsal sympathetic ganglia results in appreciable increase of cutaneous sensibility, in addition to Homers syndrome, in the half extent of the face and neck on the blocked side. The author has reported on the above mentioned clinical observations.
In this study the author performed experiments in animals to clarify definite physiological relationships between the peripheral autonomic and cutaneous sensory nerves. In spinal frogs flexor reflexes were evoked by induction shock applied to the dorsolateral skin surface of the foot. (Fig. 1) The stimulus intensity was changed by coil-distance of the inductorium. The stimulating electrodes were platin electrodes.
Changes of the cutaneous sensibility were observed through the changes of the height of flexor reflexes evoked, when the autonomic nerve endings were stimulated or paralyzed by some agents. For these purposes adrenalin chloride as the stimulant of the sympathetic nerve endings, acetylcholine chloride as that of the parasympathetic nerve endings were injected into the local subcutaneous lymph space. Atropine sulfate was injected as the depressant of, the latter. Cauterization was done directly to the sympathetic ganglia (the lower three ganglia) in order to paralyze the postganglionic sympathetic nerve (Fig. 2,31.4) The results of the experiments if summarized are as follows:
j . Concerning the flexor reflexes
1) Adrenalin chloride depresses the cutaneous sensation, it consequently has a decreasing action of the flexor reflex on the ipselateral side. (Fig. 5)
2) Cauterization of sympathetic ganglia makes sensitive the local cutaneous sensation, it consequently increases the flexor reflex. on the ipselateral side.
(Fig.6)
3) Acetylcholine chloride, when a physiological dose administered, makes sensitive the local cutaneous sensation, it consequently has an increasing action of the flexor reflex on the ipselateral side. (Fig. 8)
4) Atropine sulfate depresses the local cutaneous sensation, it consequently has a decreasing action of the, flexor reflex on the ipselateral side. (Fig. 10)
5) Atropine sulfate reveals a central action activating the spinal function when an adequate dose is administered. (Fig. 11)
S) Sodium bicarbonate, when an adequate dose locally administered, makes sensitive the local cutaneous sensation, it consequently, has an increasing action of the flexor reflex on the ipselateral side. (Fig. 12)
II Concerning the relationships between the peripheral autonomic and cutaneous sensory nerves:
1) . Activation, of the sympathetic nerves depresses the cutaneous´ sensory nerve , endings and their paralysis makes sensitive the latter.
2) Activation of the parasympathetic nerves makes sensitive the cutaneous sensory nerve endings and their paralysis depresses the latter.
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