왕불유행, 목통, 통초가 산후 생쥐의 유즙분비량과 유즙분비 관련 인자에 미치는 영향
Effect of Melandrii Herba, Akebia Quinata Decaisne, and Tetrapanax Papyriferus on Milk Secretion and Lactation Related Factors in Postpartum Mice
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연구목적 : 이 연구의 목적은 수유 중인 생쥐에서 유즙분비량과 aquaporin(AQP)의 발현에 대한 왕불유행, 목통, 통초의 효과를 관찰하기 위하여 시행하였다. 연구방법 : 출산 후 1일째부터 3주간 증류수를 투여한 Control군(C group)과 왕불유행(MH, 2,720 mg/kg), 통초(TP, 400 mg/kg), 목통(AQ, 2,800 mg/kg) 추출물을 각각 경구투여한 실험군으로 분류하여, 분만 직후 어미 생쥐 1마리 당 새끼 생쥐 6마리로 실험을 진행하였다. Control군과 비교하기 위하여 임신을 하지 않은 SKH-1 생쥐를 virgin군으로 사용하였다. 연구결과 : 1. 새끼생쥐의 체중변화는 C군에 비해 AQ군은 증가하였고, TP군과 MH군은 순서대로 감소를 보였으나 통계적인 유의성은 없었다. 2. 수유기간 내 총수유량은 C군에 비해 TP군, MH군, AQ군 순서로 유의하게 많았다(p<0.05). 3. 유선조직의 광학현미경적 관찰 소견에서 모든 실험군의 유선조직은 대조군에 비하여 발달하였고, 발달 정도는 MH군, AQ군, TP군 순서였다. 4. 유선조직의 prolactin receptor에 대한 면역조직화학적 염색에서는 대조군에 비하여 AQ군, MH군이 유선포를 구성하는 분비 상피세포에 강한 면역반응을 나타내었고, TP군의 면역반응은 다소 약하게 나타났다. 5. 유선조직의 AQP에 대한 면역조직화학적 염색 소견에서 AQP1은 유선포 주위에 위치한 모세혈관과 세정맥의 벽에서 AQP3는 유선포를 구성하는 상피세포에서, AQP5는 유선포 사이의 일부 조직에서 강한 면역반응을 나타내었다. AQP1은 TP군>AQ군=C군>MH군 순이었고, AQP3는 MH군,AQ군>TP군=C군, AQP5는 MH군>C군>AQ군,TP군 순이었다. 6. 혈청 내 prolactin 농도는 C군, virgin군에 비하여 MH군, AQ군에서 유의성 있게 증가하였으며(p<0.05), TP군은 감소였으나 통계적 유의성은 없었다. 7. Western blot 소견에서 AQP1의 발현은 TP군>AQ군>C군>MH군 순서대로, AQP3의 발현은 MH군>AQ군>C군>TP군 순서대로, AQP5의 발현은 MH군>TP군>C군>AQ군 순서였다. AQP1,3,5 모두 Virgin군에 비하여 C군의 발현이 현저하였다. 결 론 : 목통, 통초, 왕불유행의 투여는 출산 후 생쥐의 prolactin 농도를 증가시켰고, 유선조직에서 prolactin receptor 및 AQP의 발현을 증가시켜 유선조직이 발달함으로써 모유분비를 증가시키는 효과가 있을 것으로 사료된다.
Abstract
Objectives : The purpose of this study is to investigate the effect of Melandrii Herba (MH), Akebia Quinata Decaisne (AQ), and Tetrapanax Papyriferus (TP) on milk secretion and aquaporin (AQP) expression in lactating mice. Methods : For the experiment, the mice were divided into three groups, which were orally administered MH (2,720 mg/kg), TP (400 mg/kg) and AQ (2,800 mg/kg) extracts respectively for 3 weeks from Day 1 after the birth, compared with the control group (C group), which was administered distilled water. A group consisted of six infantile mice per postpartum mouse. For comparison with the C group, non-pregnant SKH-1 mice were used as the virgin group. Results : 1. When it comes to the immunohistochemical staining for prolactin receptors in the mammary glands, the AQ and MH groups showed a strong immune response to the secretory epithelial cells constituting the mammary alveoli, while the TP group represented a weaker immune response. 2. In the immunohistochemical staining for AQP in the mammary glands, AQP1 showed a strong immune response in the walls of capillaries and venules around the mammary alveoli, and AQP3 in the epithelial cells constituting the mammary alveoli, and AQP5 in some tissues between the mammary alveoli. AQP1 was expressed in the order of TP group > AQ group = C group> MH group, and AQP3 was MH group and AQ group > TP group = C group, and AQP5 was MH group > C group > AQ group and TP group. 3. In the Western blot, AQP1 was expressed in the order of TP group > AQ group > C group > MH group, and AQP3 was MH group > AQ group > C group > TP roup, and AQP5 was MH group > TP Group > C group > AQ group. All of AQP1, 3, 5 expression were significantly higher in the C group than in the Virgin group. Conclusions : The administration of Akebia Quinata Decaisne, Tetrapanax Papyriferus and Melandrii Herba have the effect of improving prolactin levels in postpartum mice and increasing the expression of prolactin receptor and AQPs in the mammary glands, suggesting that lactation might be enhanced by the development of the mammary glands.
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