早發性卵巢衰竭(Premature Ovarian Failure, POF),又稱早發性卵巢功能不全,是指女性在40歲之前卵巢功能提早衰退的現象,不僅導致月經不規則、停經,更影響生育能力與身心健康。傳統上,多以荷爾蒙替代療法(HRT)應對,但副作用如肥胖、頭痛甚至腫瘤風險,使得越來越多人尋找其他替代療法。而近年研究發現,中醫在POF治療上展現出令人矚目的潛力。
Evid Based Complement Alternat Med. 2022 Nov 26;2022:5413504. doi: 10.1155/2022/5413504
POF的主要成因包括:
自體免疫疾病
基因異常(如MCM8、MCM9變異)
化療導致卵巢DNA受損
氧化壓力與細胞凋亡異常
目前西醫治療手段包括HRT與幹細胞移植,但幹細胞技術成本高、風險大,加上HRT副作用頻傳,促使醫界對中醫等替代療法產生興趣。值得注意的是,POF病因多元且難以預測,因此需要個人化與多層次的治療策略,這也是中醫強項之一。
根據2022年一篇發表於《Evidence-Based Complementary and Alternative Medicine》的系統性回顧,中醫主要透過以下三大機制改善POF:
1. 抑制細胞凋亡,延長卵巢壽命
研究指出,部分中藥複方能減少卵巢濾泡細胞(granulosa cells, GC)凋亡,透過調控Bcl-2、Cyt-c、caspase-3等與細胞死亡相關的蛋白表現,達到保護卵巢、提升雌激素、降低促卵泡激素的效果。這不僅有助於延緩卵巢組織的耗損,亦有潛力提升卵巢對排卵誘導的反應性。
此外,過度的凋亡往往伴隨氧化壓力的上升,中醫療法中強調補益與抗氧化能力的藥物,或能有效中和自由基,減少粒細胞與卵母細胞的死亡率。
2. 調節免疫反應,修復自體免疫型POF
10%至30%的POF與免疫失調有關。特定中藥療法可調整T細胞比例、提升抗發炎因子表現、降低自體免疫反應,進而修復卵巢功能、促進濾泡發育。研究發現,這些療法可增加CD4+ T細胞、調整CD4/CD8比值,並抑制IL-6、TNF-α等發炎細胞激素。
在臨床上,自體免疫型POF患者對傳統排卵誘導療程反應不佳,而中醫療法的免疫調節效果正好填補這項缺口,也為無法接受激素治療的患者提供新的選擇。
3. 延緩細胞老化,重建卵巢微環境
部分中醫處方可透過調控SIRT1、抑制p16INK4a與衰老相關異染色質(SAHF),改善卵巢老化情形,並促進血管新生、提高懷孕率與新生兒存活率。研究顯示,SIRT1作為一種參與DNA修復與抗氧化的關鍵蛋白,若能上調表現,有助於維持卵巢組織的年輕態。
同時,改善卵巢微循環、促進新血管生成亦是延緩濾泡老化的重要策略,中醫強調「補血活血」、「調經養陰」等觀念,從中藥成分的藥理研究上已初步驗證其與VEGF、HIF-1α等血管新生因子相關。
副作用低:臨床與動物實驗顯示,中藥方劑未見明顯毒性反應。
成本較低:中草藥來源豐富,使用門檻低。
可整合多種療法:結合針灸、藥浴、循環治療,形成個人化療程。
多靶點治療優勢:與單一標靶藥物相比,中醫複方可同時調控多條信號傳導途徑,對多重病因並存的POF更具潛力。
Q1:中藥治療需要多久見效?
根據研究與臨床經驗,至少需持續3至6個月,才能觀察荷爾蒙與月經改善,部分個案甚至可恢復排卵與懷孕機率。
Q2:中藥會影響西醫療效嗎?
若在醫師指導下使用,合理配伍反而可減少HRT劑量與副作用,有助於穩定月經週期與心理狀態。
Q3:POF患者都適合中醫治療嗎?
除了嚴重卵巢纖維化或已完全無濾泡者,大多數患者都可嘗試中醫輔助療法。中醫也特別適合尚未完全停經的患者,協助延緩惡化進程。
雖然目前中醫治療POF的臨床研究尚待擴展,但從現有動物實驗與初步臨床數據來看,中醫具有明確的治療潛力。未來若能有更多大型臨床試驗,將有助於中醫進一步進入國際婦科主流治療選項。
從改善體質、調節荷爾蒙、穩定免疫,到延緩卵巢老化,中醫提供一種整體、系統性的療癒思維,正好補足現代醫學在POF治療中的不足之處。
對於正在尋求替代療法的你,不妨諮詢具有中醫專業醫師,打造最適合自己的療程,讓我們一起用東西合璧的方式,重啟希望之門。
Evid Based Complement Alternat Med. 2022 Nov 26;2022:5413504. doi: 10.1155/2022/5413504
Beneficial Effects of Traditional Chinese Medicine in the Treatment of Premature Ovarian Failure
Ming Li 1, Yu-Bo Xiao 1, Le Wei 2, Qi Liu 2, Pin-Yue Liu 1,✉, Jian-Feng Yao 2,✉
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PMCID: PMC9719426 PMID: 36471694
Abstract
Premature ovarian failure (POF) is characterized by hormonal disorders, amenorrhea, and premature loss of fertility potential in women of reproductive age. Several studies have been conducted on the effectiveness of traditional Chinese medicine (TCM) in treating POF. TCM relied primarily on apoptosis, immunity, and aging to treat POF based on the studies of domestic and foreign literature. Zuogui pills inhibited mitochondrial-dependent apoptosis in the treatment of POF. Huyang Yangkun formula regulated the downstream of the Bcl-2 family to resist apoptosis through the aquaporin-1 protein. Modified Bazhen decoction regulated apoptosis in POF by regulating X-linked inhibitors of apoptosis protein. Bushen Tianjing recipe was effective in treating POF by promoting angiogenesis and preventing apoptosis. As for immunity, Bushen Jianpi prescription and Er-Xian decoction cured autoimmunity POF models and increased follicular development-related protein expression. Bushen Huoxue Tang improved ovarian function and reduced ovarian inflammation by regulating the Nrf2/Keap1 signaling pathway and T lymphocytes. Taohong Siwu decoction promoted the proliferation and differentiation of granulosa cells of POF mice by regulating the TGF-β1/Smads signaling pathway. In addition, ginsenoside Rg1 and Jiajian Guisheng formula treated POF by regulating cell aging-related mechanisms. Si Wu Tang treated POF by activating the angiogenesis-related proteins. The goal of this review is to serve as a reference for in-depth research into the treatment of POF with TCM and provide inspiration for new diagnostic methods and treatment options.
1. The Current State of POF Research
Premature ovarian failure (POF) or premature ovarian insufficiency (POI) can diminish female fertility potential prematurely. Symptoms of POF include cessation of menstruation, follicular dysplasia, and disruption of elevated follicle-stimulating hormone (FSH), estradiol (E2), anti-Müllerian hormone (AMH), and luteinizing hormone (LH) levels in women before forty [1]. Likewise, it is also accompanied by hot flashes, night sweats, insomnia, psychological distress, sexual dysfunction, and other symptoms similar to menopause. Chemotherapy, autoimmunity, and genetic defects could contribute to POF's etiology [2–4]. Mauri et al. conjectured that chemotherapy might damage DNA, inducing early cell apoptosis or premature follicles [5]. Chromosomal abnormalities are considered a common cause of POF. According to Jin et al., the coding variants ADAMTSL1, FER1L6, and the minichromosomal maintenance complex components (MCM) 8 and MCM 9 were also linked with POF [6].
POF is difficult to prevent and cure. Estrogen therapy and progesterone therapy are used for clinical treatment. Estrogen has been reported to avoid the adverse effects of clomiphene citrate and apoptosis in the ovarian follicles of the mammalian ovary [7]. Melatonin is helpful in the treatment of chemotherapy-induced ovarian dysfunction by reducing oxidative stress levels and preventing apoptosis in the ovarian follicles and oocytes [8–11]. However, hormone therapy may cause side effects such as obesity, headaches, and even malignant tumors. Therefore, it is necessary to look for alternative forms of treatment. The transplantation of stem cells could stimulate the growth of follicles and improve hormone levels. In the study of Fu et al., overexpression of miRNA-21 in mesenchymal stem cells led to the inhibition of granulosa cell (GC) apoptosis and improved ovarian structure and function in chemotherapy-induced POF rats [12]. Ding et al. determined that human umbilical cord mesenchymal stem cell-derived exosomal miRNA-17-5p enhanced ovarian function in POF mice by regulating Sirtuins7 [13]. Even so, stem cells still have limited clinical applications. Besides the high cultivation costs and limited supply of stem cells, stem cells are also subject to immune rejection and ethical concerns in patients.
2. Application of Traditional Chinese Medicine in POF
Traditional Chinese Medicine (TCM) has long been used in China for the treatment of a wide variety of illnesses. Herbal medicine resources in China are abundant, easy to grow, and affordable. Different therapeutic effects could be achieved by mastering different drug combinations. TCM could improve the body's resistance. Studies suggested that TCM possessed the therapeutic potential for the treatment of neurological disorders, cancer, and COVID-19 [14–16]. Menstruation and ovulation could be improved with TCM, as well as perimenopausal symptoms such as hot flashes, sweating, insomnia, anxiety, and osteoporosis [17]. TCM is effective in the treatment of several gynecological disorders such as polycystic ovary syndrome and infertility [18, 19].
POF was described based on its symptoms as “amenorrhea,” “infertility,” or “menstrual water loss at a young age” among ancient Chinese medical texts. Kidney deficiency (Shen Xu) was one of the primary causes of POF in TCM [20]. Qu et al. asserted that kidney deficiency was the origin, followed by liver stagnation and spleen deficiency based on the etiology and pathogenesis of POF [21]. In addition to strengthening the kidneys and feeding the essence, it was also necessary to maintain the spleen and soothe the liver to treat POF. Several studies and rich clinical experiences had demonstrated that TCM prescriptions were beneficial in treating POF. Zigui Yijing decoction combined with Zishen Yutai pills reduced the level of FSH and LH and increased the level of E2 and AMH. They improved the ovarian blood supply and the thickness of the endometrium in POF patients. With combined medication, POF patients' symptoms such as insomnia, hot flashes, night sweats, and dry mouth and throat were improved [22]. The total effective rate of the treatment groups was 63.6%. In a network pharmacology study, Zigui Yijing decoction activated PI3K/Akt signal pathways by affecting IL-6, AKT1, and PTEN, thus treating POF [23]. Xie et al. reported that the Huyang Yangkun formula repaired dysfunctions in POI rats through the Hippo-JAK2/STAT3 pathway [24]. Keremu et al. reported that TCM Muniziqi improved the function of the hypothalamus-pituitary-ovarian axis in POF rats [25]. TCM could treat POF that is caused by apoptosis or immunosuppression [26, 27].
2.1. TCM Prevent POF by Inhibiting Apoptosis
Primal follicles (PF) or ovarian reserve are fixed at birth and activated by the PI3K/AKT/mTOR pathway and the Hippo signaling pathway [28]. The majority of follicles eventually develop into the corpus luteum. However, 99% of follicles develop follicular atresia, which is vital for the maintenance of a healthy and functioning reproductive system. GC plays a vital role in deciding follicular fate, providing molecules essential for follicle growth, as well as dying off through apoptosis to result in follicular atresia [29]. The division, proliferation, and apoptosis of GC coexist under normal circumstances, but follicular atresia occurs when GC apoptosis >10% [30]. At the same time, once the process of follicular atresia becomes out of control, it would accelerate apoptosis, which causes premature PF depletion [31]. Autophagy induces apoptosis by triggering the accumulation of autophagosomes in the GC and luteal cells, also leading to follicular atresia [32]. The rate of follicle atresia is greater than normal physiological metabolism, which can lead to POF. Apoptosis is caused by oxidative stress (OS). Pathological conditions and drug treatments generate OS in the ovary and induce GC apoptosis through mitochondria-cytochrome C (Cyt-c) pathway [33]. Cyt-c binds to caspase factor 1, activating caspase-9 in the oocyte cytoplasm [34]. Active caspase-9 triggers the conversion of procaspase-3 to caspase-3 [35]. Furthermore, activation of caspase-3 disrupts cellular organization and ultimately leads to oocyte apoptosis [36]. TCM had been demonstrated to affect apoptosis factors in POF in recent years (Table 1).
Table 1.
The regulatory effects of Chinese herbal formula on POF through apoptosis.
Formula name
Formula
Hormone and related protein levels
Experimental model
Roles
Zuogui pills [26]
Rehmanniae radix praeparata (Shu di Huang), Corni fructus (Shan Zhu Yu), Dioscoreae rhizoma (Shan Yao), Cuscuta chinensis (Tu Si Zi), Lycium barbarum (Gou Qi Zi), Achyranthes bidentata (Niu Xi), Testudinis carapax et plastic collar (Gui Jia Jiao), Cervi conrnus colla (Lu Jiao Jiao) with a 8 : 4 : 4 : 4 : 4 : 3 : 4 : 4 ratio
FSH ↓
SPF female SD rats
ZGP inhibited mitochondrial-dependent apoptosis in the treatment of POF.
E2 ↑
Bax ↓
Bcl-2 ↑
Cyt-c ↓
Huyang Yangkun formula [37]
Astragali radix (Huang Qi) 50 g, Herba epimedii (yin yang Huo) 10 g, Dioscoreae rhizoma (Huai Shan Yao) 10 g, Semen cuscutae (Tu Si Zi) 10 g, Rehmanniae radix (Shu Di Huang) 10 g, Angelicae sinensis radix (Dang Gui) 10 g, Glehniae radix (Bei Sha Shen) 10 g
AMH ↑
SPF female SD rats
HYF regulated the downstream Bcl-2 family to resist apoptosis through AQP protein.
FSH ↓
AQP8 ↓
Procaspase-9 ↓
Cleaved-caspase-9 ↓
Cleaved-caspase-3 ↓
Bcl-XL ↑
MCL-1 ↓
BIM ↓
Modified Bazhen decoction [38]
Bupleurum (Chai Hu) 6 g, Angelica (10 g), Ligusticum Chuan Xiong (Chang Xiong) 6 g, Root of Herbaceous penoy 10 g, Rehmannia (Di Huang) 10 g, Codonopsis (Dang Shen) 10 g, Ctractylodes 6 g, Poria (Fu Ling) 10 g, Licorice (Gan Cao) 3 g, Antlers (Lu Rong) 10 g, Cyathula (Bei Xian) 20 g, Cyperus (Suo Cao) 10 g
FSH ↓
SPF female SD rats
MBD could regulate apoptosis in POF by regulating XIAP.
E2 ↑
XIAP ↑
Bushen Tianjing recipe [39]
Rehmanniae radix praeparata (Shu Di Huang) 10 g, Testudinis carapax et plastrum (Gui Jia) 10 g, Paeoniae radix alba (Bai Shao) 10 g, Corni fructus (Shan Yu Rou) 10 g
FSH ↓
SPF female SD rats
BTR was effective in the treatment of POF rats by angiogenesis and antiapoptosis.
E2 ↑
Progesterone ↓
Testosterone ↓
VEGF, VEGFR2 ↑
Bax ↓
Bcl-2 ↑
Caspase-3 ↓
Zuogui Pill (ZGP) is a classic TCM prescription used to treat POF. In ZGP, Shan Yao has the effect of nourishing the spleen “yin.” Gou Qi Zi has the effect of tonifying the kidney and nourishing essence, clearing the liver. Shan Zhu Yu could nourish the liver and kidneys. Gui Jia Jiao could replenish the “yin” of the liver and kidney. Lu Jiao warms the kidney “yang,” astringents, and stops bleeding. Bian et al. found that clinical treatment of POF with ZGP could reduce the occurrence of adverse reactions (dizziness, thrombosis, etc.), improve the hormone level of patients, and promote body recovery [40]. ZGP inhibited GC apoptosis in rats and PI3K/AKT/mTOR pathway activation improved ovarian function induced by cisplatin [41]. ZGP induced the expression of the TAP63 protein in ovarian tissue, activated the Bcl-2 gene, and inhibited GC and oocyte apoptosis [42]. Serum FSH concentrations decreased and serum E2 levels increased with ZGP treatment. Compared with the model group, the pregnancy rate was improved but not statistically significant, the number of primary follicles, second follicles, and corpus luteum increased significantly, and the number of atresia follicles decreased after the administration of ZGP. Moreover, Bax and Cyt-c were repressed, and Bcl-2 increased. Their results suggested that ZGP-regulated inhibitory mitochondrial apoptosis in follicles had a significant impact on POF [26].
Huyang Yangkun formula (HYF) is based on the “yin and yang” theory, which suggests that POF may be caused by an imbalance of the kidney “yin and yang”. HYF regulated JNK/p38/p65-NFκB pathway, reduced the apoptosis of GC, and protected the ovary [43]. In Lingdi Wang's experiment, with HYF treatment, AMH and Bcl-XL were increased, aquaporin 8 (AQP8), cleaved-caspase-9, and cleaved-caspase-3 were downregulated, and the number of apoptotic cells significantly decreased. The follicles developed variously, the microvessels were abundant, and the number of follicles was significantly increased in the HYF group. Their results indicated that HYF promoted follicle development by modulating mitochondrial apoptosis [37].
Modified Bazhen decoction (MBD) was used for treating postpartum blood deficiency, viscera deficiency, and excessive sweating. Yang et al. found that MBD could improve POF by inhibiting excessive autophagy of ovarian cells [44]. In Liu et al.'s study, E2 and X-linked inhibitors of apoptosis protein (XIAP) were increased, and FSH was decreased with MBD treatment [38]. XIAP could bind to the apoptosis initiator caspase-9, and apoptosis effectors caspase-3 and caspases-7, to down-regulate apoptosis [45]. Therefore, Liu speculated that MBD could regulate apoptosis and play a therapeutic role in POF by regulating XIAP.
Bushen Tianjing recipe (BTR) had been used for centuries in treating POF. The menstruation recovery rate of POF patients was 91.18% after half a year of treatment with BTR. There was no liver and kidney function damage or other complications, which proved that BTR had good clinical efficacy [46]. Xu et al.'s study showed that BTR decreased the estrous cycle, and increased the ovary index. BTR treatment significantly reduced the histopathological changes of POF and increased the number of primordial follicles and primary follicles. It reduced ovarian interstitial fibrosis, degenerative necrosis of the corpus luteum, inflammatory cell infiltration, and vasodilation symptoms. Also, BTR elevated E2 and decreased FSH, progesterone, and testosterone. BTR increased the level of Bcl-2, decreased the level of Bax and caspase-3, and protected GC from apoptosis [39].
DNA damage is the hallmark feature of apoptosis. The DNA damage and PI3K/AKT pathway are involved in follicle survival. Lacking CK2β in oocytes enhanced γH2AX, a member of the histone H2A family, suppressed PI3K/AKT signaling, and impaired DNA damage response signaling, leading to POF [47]. Icariin is an extract of Yin Yang Huo. Li et al. demonstrated that icariin promoted DNA repair and protected GC and follicles in POF [48]. The levels of γH2AX and p53 binding protein 1, indicators of DNA damage, decreased in POF mice after icariin treatment. Icariin increased body weight and ovarian mass, increased the content of serum E2, and decreased the content of FSH in POF mice. Icariin increased the number of primordial follicles, primary follicles, and mature follicles in POF mice. Icariin downregulated the expressions of MafG and Gcnt3 genes and upregulated the expressions of Oas1h, Smc1b, Mov10l1, Oosp2, Tbpl2, and DynAP genes in POF mice, participated in DNA repair [49]. Their results demonstrated that icariin attenuated cell apoptosis by promoting DNA damage repair.
2.2. TCM Improves POF through Immunity
The immune system fails to identify the ovary's cellular self correctly in 10%–30% of POF patients. They suffer from autoimmune diseases, such as hypothyroidism, systemic lupus erythematosus, rheumatoid arthritis, and Crohn's disease [50]. An auto-inflammatory process could damage the ovary by altering T cell subsets, increasing antioocyte antibodies and antiovarian antibodies produced by B cells. The Auto-inflammatory process could decrease the number of effector-suppressed/cytotoxic lymphocytes and promote natural killer (NK) cell activity [51]. Lipid oxidative stress injury and polarization of immune cells are inhibited and the release of inflammatory factors is increased in POF mice. Zhu et al. reported that the concentrations of IL-1β, IL-6, IL-4, IL-22, NF-κB, TNF-α and IFN-γ in the peripheral blood of POF mice were significantly decreased after thymopentin treatment [52]. Yin et al. reported that Th17/Tc17 cells, Th17/Treg cells, or IL-17 expression were increased, restoring ovarian function after human placenta mesenchymal stem cells were transplanted into POF mice [53]. TCM had been demonstrated to affect the immune in POF in recent years (Table 2).
Table 2.
The regulatory effects of Chinese herbal formula on POF through the immune system.
Name
Formula
Hormone and related protein levels
Experimental model
Roles
Bushen Jianpi prescription [27]
Radix rehmanniae (Di Huang) 10 g, Semen nelumbinis (Lian Zi) 10 g, Rhizoma dioscoreae oppositae (Shan Yao) 10 g, Semen cuscutae (Tu Si Zi) 10 g, Radix morindae officinalis (Ba Ji Tian) 10 g, Fructus rubi chingii (Fu Pen Zi) 10 g, Rhizoma polygonati sibirici (Huang Jing) 10 g, Herba dendrobii nobilis (Shi Hu) 10 g, Folium citri reticulatae (Ju ye) 10 g, Rhizoma cyperi (Xiang Fu) 10 g and Radix glycyrrhizae (Gan Cao) 3 g
FSH ↓
Autoimmune POF model female BALB mice
BJP cured the autoimmune POF model and increased the expression of follicular development-related proteins.
E2 ↑
LH ↓
Cx43 ↑
BMP-15 ↑
Er-Xian decoction [54]
Rhizoma curcumae phaeo-caulis (E Zhu) 9 g, Herba epimedii brevicornus (yin yang Huo) 9 g, Radix morindae officinalis (Ba Ji Tian) 9 g, Radix angelicae sinensis (Dang Gui) 9 g, Cortex phellodendri amurensis (Huang Bai) 6 g and Rhizoma anemarrhenae (Zhi Mu) 6 g
FSH ↓
Autoimmune POF model female BALB/C mice
EXD relieved ovarian function of autoimmune POF model mice.
E2 ↑
LH ↓
CD3+ T cell ↑
CD4+ T cell ↑
CD8+ T cell↓
BMP-15 ↑
Akt ↑
Rehmannia glutinosa libosch (Di Huang) 10 g, Epimedium brevicornu Maxim (yin yang Huo) 10 g, Cuscuta chinensis Lam (Tu Si Zi) 10 g, Uncaria rhynchophylla (Gou Teng) 6 g, Angelica sinensis (Dang Gui) 10 g, Paeonia lactiflora Pall (Bai Shao) 10 g, Ligusticum chuanxiong Hort (Chuan Xiong) 10 g, Anemarrhena asphodeloides Bge (Zhi Mu) 10 g, Bupleurum chinensis DC (Chai Hu) 6 g, Phellodendron chinensis schneid (Huang Bai) 10 g, Scutellaria baicalensis georgi (Huang Qin) 6 g
FSH ↓
Autoimmune POF model SPF female C57BL/6J mice
BHT improved ovarian function and reduced ovarian Inflammation by Nrf2/Keap1 signaling pathway.
E2 ↑
LH ↓
AMH ↑
SOD ↑
MDA ↓
Nrf2↑ Keap1 ↑
Rehmannia glutinosa libosch (Di Huang) 10 g, Epimedium brevicornu Maxim (yin yang Huo) 10 g, Cuscuta chinensis Lam (Tu Si Zi) 10 g, Angelica sinensis (Dang Gui) 10 g, Paeonia lactiflora Pall (Bai Shao) 10 g, Ligusticum chuanxiong Hort (Chuan Xiong) 10 g, Anemarrhena asphodeloides Bge (Zhi Mu) 10 g, Bupleurum chinensis DC (Chai Hu) 6 g, Phellodendron chinensis Schneid (Huang Bai) 10 g
ER ↑
Autoimmune POF model B6AF1 female mice
BHT exerted significant protective immunity on POF mice by regulating T lymphocytes.
PR ↑
ZP ↓
CD4+↑
CD25+↑
FoxP3+ ↑
IL-10 ↓
IFN-γ ↓
Taohong Siwu decoction [57]
Rehmanniae radix praeparata (Di Huang) 15 g, Polygonatum sibiricum Red. (Huang Jing) 12 g, Cornus officinalis Sieb. et Zucc. (Shan Zhu Yu) 12 g, Lycium barbarum L. (Gou Qi Zi) 12 g, Angelica sinensis (Oliv.) Diels (Dang Gui) 15 g, Paeonia lactiflora Pall. (Bai Shao) 12 g, Ligusticum chuanxiong Hort. (Chuan Xiong) 9 g, Salvia miltiorrhiza Bge. (Dan Shen) 12 g, and Prunus persica (L.). Batsch (Tao Ren) 9 g
TGF-β1↑
Immune POF model female BALB/c mice
TSD promoted the proliferation and differentiation of granulosa cells of POF mice by the TGF-β1/Smads signaling pathway.
TGF-βRII↑
Smad2↑
Smad3↑
POF patients suffering from autoimmune are not appropriate candidates for gonadotropin therapies, which would accelerate follicular turnover, reduce the effectual follicle reserve in PF and aggravate the disease [51]. Therefore, many researchers focused on studying TCM curing POF. He et al. treated POF mice with Ginsenoside Rg1 (Rg1) extracted from ginseng. Rg1 treatment significantly reduced the expression of malondialdehyde, IL-1β, TNF-α, and IL-6 [58]. Rg1 improved fertility and reduced ovarian pathology in POF mice by enhancing anti-inflammatory and antioxidant functions.
Bushen Jianpi prescription (BJP) is derived from the formula used to prepare Shuangbu decoction, which was originally documented in medical literature “Wenbing Tiaobian” authored by Tang Wu in the Ming dynasty [59]. Feng et al. used BJP to treat autoimmune POF mice. Compared with model groups, ovarian weights in BJP treatment groups were significantly increased. The levels of E2, LH, and FSH were improved and the expressions of the antibone morphogenetic protein 15 (BMP-15) and connexin 43 (Cx43) were increased after BJP treatment [27]. Cx43 regulates folliculogenesis and oogenesis, and BMP-15 positively regulates follicle growth and differentiation, oocyte development, ovulation, fertilization, and embryonic development [60]. Therefore, BJP had a therapeutic effect on autoimmune POF mice and improved folliculogenesis, oogenesis, and follicular development. Tian found that the hormone level in the POF patient's body was significantly improved with BJP. The levels of CD4+ T cells and CD4+/CD8+ of T cells in POF patients increased significantly, while the levels of CD8+ T cells decreased significantly after BJP treatment [61]. Therefore, BJP could cure POF by regulating immunity.
The Er-Xian decoction (EXD) is mainly recommended to treat menopause, amenorrhea, and other symptoms related to “Shen Xu”. In EXD, Ba Ji Tian can invigorate the kidney and strengthen the “yang.” Zhi Mu and Huang Bai can purge the kidney “yang” and nourish the kidney “yin”. According to the system pharmacology analysis, EXD might exert its beneficial effects by modulating immune activity, estrogen levels, and antioxidant activity on POF [54]. The study of traditional Chinese medicine gynecology in Xi'an, China showed that the clinically effective rate of EXD was 91.3%. In the EXD treatment group, the indexes such as mean ovarian diameter, ovarian average volume, and oral follicle number were significantly increased, and the endocrine hormones were significantly improved. The levels of CD4+ T cells and CD4+/CD8+ of T cells in POF patients increased significantly, while the levels of CD8+ T cells decreased significantly after EXD treatment [62]. In the experiment of Zhang et al., EXD effectively treated autoimmune POF mice. EXD significantly improved the average weight of the ovary, spleen, and thymus of autoimmune POF mice, but had no significant difference in the overall weight. EXD treatment significantly increased CD3+ T cells and CD4+ T cells and decreased CD8+ T cells. The levels of serum LH and FSH declined and the level of E2 increased, the expression of BMP-15 and Akt were higher after being treated with EXD [63].
In Bushen Huoxue formula (BHF), Dang Gui and Chuan Xiong have the function of nourishing blood and regulating menstruation. Di Huang and Bai Shao can nourish “yin,” blood, and liver. Tu Si Zi can help “yang” and replenish essence. Yin Yang Huo can invigorate the kidney and strengthen the “yang.” BHF had been used clinically to treat POF. Wang et al. from Qinhuangdao Maternal and Child Health Hospital found that BHF could effectively reduce the abnormal ovarian immune response in POF patients, and the levels of CD3+ T cells, CD4+ T cells, and CD4+/CD8+ T cells were reduced in peripheral blood. BHF improved the estrogen level in POF patients. The effective rate of BHF treatment was 82.42%, higher than 60.44% in the control hormone treatment group [64]. Chen et al. demonstrated that BHF improved body weight, ovarian and spleen indexes index, ovarian function, and estrous cycle by Nrf2/Keap1 signaling pathway in the autoimmune POI model. BHF significantly increased E2 and AMH levels and decreased FSH and LH levels. It also increased SOD levels and decreased malondialdehyde levels, ameliorating oxidative stress in POF mice [55]. Wang et al. found that BHF exerted significant protective immunity on POF mice by regulating T lymphocytes [56]. BHF stimulated the expansion of CD4+ T cells, CD25+ T cells, and Fox P3+ (forkhead box P3+) T cells in autoimmune POF mice, the levels of IL-10 and IFN-γ were decreased. The body weight and multiple organs index of the BHF-treated group increased. The number of developing follicles was greater. The expression of estrogen and progesterone receptors (ER and PR) also increased with BHF treatment.
Yuan et al. found that modified Taohong Siwu decoction (TSD) increased the number of primary and mature follicles and decreased the number of atretic follicles in immune POF model mice [57]. Meanwhile, TSD improved ovarian function by up-regulating the expression of TGF-β1, TGF-β RII, and Smad 2/3 proteins in GC. Thus, TSD promoted the proliferation and differentiation of GC of POF mice by the TGF-β1/Smads signaling pathway. TGF-β is a master regulator of multiple cellular functions, including cellular immunity, as well as an important executor of immune homeostasis and tolerance [65]. Besides regulating the production and function of effector T cells and dendritic cells, TGF-β could suppress NK cells and regulate the complex behavior of macrophages and neutrophils [66].
2.3. TCM Treats POF through Other Ways
Besides apoptosis and immunity, there are several other pathogenic factors of POF, including the complex microenvironment of the ovary and cell aging (Table 3). The ovarian microenvironment contains estrogen and growth factors related to follicular development, such as Nrf2, Akt, NF-κB, and multiple interleukins [69, 70]. Follicular development and ovulation are related to ovarian blood vessels [71]. VEGF polymorphisms are significantly associated with POF in patients [72]. Hence, remodeling the vascular system is essential for ovarian function. Known as “the first prescription for gynecology,” Si Wu Tang (SWT) was widely used as an effective remedy for menstrual irregularities and infertility. In the research of Zhou et al., the highest-dose SWT group significantly increased the pregnancy rate and improved the number of live births and the weight of newborn mice. They found that SWT treatment significantly improved estrogen levels, follicle numbers, antioxidant defense, and microvascular formation in POF mice by promoting activation of the STAT3/HIF-1α/VEGF signaling pathway and Nrf2/HO-1 signaling pathway [67].
Table 3.
The regulatory effects of Chinese herbal formula on POF through other ways.
Name
Formula
Hormone and related protein levels
Experimental model
Roles
Si Wu Tang (SWT) [67]
Rehmannia glutinosa (Gaertn.) DC. (Shu Di Huang) 12 g, Angelica sinensis (Oliv.) Diels (Dang Gui) 9 g, Paeonia lactiflora Pall (Bai Shao) 9 g, Ligusticum striatum DC. (Chuan Xiong) 6 g.
FSH ↓
Female C57BL/6 mice
SWT protected ovaries and improved ovarian angiogenesis by activating the Nrf2/HO-1 signaling pathway, the STAT3/HIF-1α/VEGF signaling pathway, and other proangiogenic factors.
E2 ↑
SOD ↑
MDA ↓
Nrf2 ↑
HO-1 ↑
VEGF ↑ bFGF ↑
PDGFB ↑
Ang1 ↑ p-STAT3 ↑
STAT3 ↑
HIF-1α ↑
Jiajian Guishen formula (JGF) [68]
Cuscutae semen (Tu Si Zi) 20 g, Epimedii herba (yin yang Huo) 15 g, Rehmanniae preparata radix (Shu Di Huang) 15 g, Radix morindae officinalis (Ba Ji Tian) 10 g, Ginseng radix et rhizoma (Ren Shen) 10 g, Radix glycyrrhizae (Gan Cao) 6 g
AMH ↑
SPF female ICR mice
JGF could improve the ovarian function of POI mice by suppressing SAHF.
INHB ↑
HMGA1 ↓
HMGA2 ↓
H3K9me3 ↓
HP1 ↓
Reducing the premature aging of the follicles is also crucial to treating POF. P16INK4a is a typical senescence marker and has been used exclusively in cancer diagnosis [73]. Long-term expression of p16INK4a inhibits the growth of underlying cancer cells but also causes irreversible cell cycle arrest [74]. Sirtuin-1 (SIRT1), an NAD+-dependent enzyme, is deeply involved in apoptosis, autophagy, senescence, and proliferation [75]. SIRT1 is implicated in aging through various aging-related signaling networks, including NF-κB, mTOR, P53, PGC1α, and FoxOs [76]. Liu et al. found that the TCM ginsenoside Rg1 increased the number of follicles, decreased the follicles in the corpus luteum, and improved hormone levels. Their research also demonstrated that Rg1 delayed D-gal-induced ovarian failure in POF mice by downregulating the expression of p16INK4a and enhancing the expression of SIRT1 [77].
Senescence-associated heterochromatic foci (SAHF) is a unique phenomenon of senescent cells and the sign of aging. SAHF stands for punctate aggregated heterochromatin in the nucleus of senescent human diploid fibroblasts [78]. Genes encoded by this domain are repressed, promoting cellular senescence [79, 80]. Su et al., [68] treated POF mice with Jiajian Guishen formula (JGF) and significantly improved the estrous cycle [68]. E2 and Inhibin B (INHB) levels were elevated in serum with JGF treatment. JGF also inhibited the expression of SAHF-related proteins in high mobility group A (HMGA1, HMGA2) and reduced the distribution of HP1 and H3K9me3 in the ovary. Therefore, they speculated that JGF might save POF mice by inhibiting the SAHF process. SAHF, p16INK4a, and SIRT1 coregulated senescence and cell cycle arrest-related proteins in neuronal senescence [81]. There may also be an interaction between the three that contributes to the premature aging of cells in POF.
3. Future Perspective and Conclusion
POF is caused by the interaction between genetic mutations caused by complex environmental factors and fast-paced lifestyles. POF has many pathogenic factors, including heredity, premature follicle aging, apoptosis, as well as effects of the patient's immune system on the ovary (Figure 1). Many TCM prescriptions had been proven effective in treating POF in China. According to TCM, POF is originating from deficiencies of the kidneys or abnormal liver and spleen functions. TCM treatments aim to invigorate the kidneys, soothe the liver, and strengthen the spleen. A variety of treatment methods are available, such as individual treatment based on differentiation of syndrome, special prescriptions plus or minus symptoms, and the cycle therapies of “yin and yang”. In this review, we summarized the related mechanism of TCM in the treatment of POF. Studies had shown that TCM prescription had therapeutic benefits by inhibiting apoptosis, slowing the aging process, promoting angiogenesis, and improving immunity (Figure 2). In the clinical and animal research, we cited in this paper, there was no mention of the phenomenon that the experimental individual had adverse reactions due to the toxicity of the prescription.
Figure 1.
Multiple main factors contribute to POF.
Figure 2.
Mechanism diagram of multiple TCM prescriptions curing POF.
The most appropriate treatment for POF in TCM is still a matter of discussion and debate in clinical practice, as there are many methods of treating this disease. Apart from TCM prescriptions, there are also TCM prescriptions combined with acupuncture, enema, foot baths, and other forms of treatment. In addition to the TCM prescriptions in this review, others also had been proven to be effective for POF patients. But the total number of POF with TCM cases is small and scattered, and every patient's situation is different, clinicians fail to collect the necessary data in the usual treatment process for comparison. Therefore, the relevant clinical experimental articles of various prescriptions mentioned in this review were limited. Thus, we call on doctors to actively collect data and publish more excellent papers to prove the role of TCM. We also urge doctors to promote the application of TCM when treating POF patients.
Acknowledgments
The authors were very grateful to the Department of Histology and Embryology for providing support. This project was supported by the Scientific Research Fund of Hunan Provincial Education Department (Grant no. 18C1146), the Science and Technology Project of Huaihua (Grant no. 2021R3106), the Young and Middle-Aged Talent Training Programme of Fujian Province of China (Grant no. 2019-ZQN-91), the Natural Science Foundation of Fujian Province of China (Grant no. 2018J01148), and the Combined Innovative Project of University and Hospital Association Union in 2021 (Grant no. 2021YX004).
Abbreviations
POF:
Premature ovarian failure
POI:
Premature ovarian insufficiency
TCM:
Traditional Chinese medicine
FSH:
Follicle-stimulating hormone
E2:
Estradiol
AMH:
Müllerian hormone
LH:
Luteinizing hormone
GC:
Granulosa cell
JAK:
Janus kinase
AQP8:
Aquaporin 8
STAT:
Signal transducer and activator of transcription
PF:
Primal follicles
PI3K:
Phosphoinositide 3-kinase
MTOR:
Mechanistic target of rapamycin
OS:
Oxidative stress
Cyt-c:
Cytochrome C
ZGP:
Zuogui pill
HYF:
Huyang Yangkun formula
MBD:
Modified Bazhen decoction
BJP:
Bushen Jianpi prescription
BTR:
Bushen Tianjing recipe
EXD:
Er-Xian decoction
BHT:
Bushen Huoxue formula
TSD:
Taohong Siwu decoction
SWT:
Si Wu Tang
JGF:
Jiajian Guishen formula
TUNEL:
Terminal deoxynucleotidyl transferase dUTP nick-end labeling
XIAP:
X-Linked inhibitor of apoptosis protein
TNF-α:
Tumor necrosis factor-alpha
VEGF:
Vascular endothelial growth factor
NK cell:
Natural killer cell
Th17 cell:
IL-17-producing T helper cell
Rg1:
Ginsenoside Rg1
BMP-15:
Antibone morphogenetic protein 15
TGF-α:
Transforming growth factor-α
SIRT1:
Sirtuin-1
SAHF:
Senescence-associated heterochromatic foci
HMGA:
High mobility group A
INHB:
Inhibin B
PDGFB:
Platelet-derived growth factor subunit B
Ang:
Angiotensin
HO-1:
Heme oxygenase 1
BFGF:
Basic fibroblast growth factor
H3K9me3:
H3 lysine9 trimethylation
Nrf2:
Nuclear factor E2 related factor 2
Keap1:
Kelch-like ECH-associated protein 1
BIM:
Bcl-2 interacting mediator of cell death
PGC1α:
Peroxisome proliferator-activated receptor coactivator.
Contributor Information
Pin-Yue Liu, Email: liupinyue6@126.com.
Jian-Feng Yao, Email: 15159595568@163.com.
Data Availability
No data were used in this study.
Ethical Approval
Ethical approval is not applicable.
Consent
Consent is not applicable.
Conflicts of Interest
The authors declare that they have no conflicts of interest.
Authors' Contributions
Ming Li and Yu-Bo Xiao designed and wrote the manuscript. Pin-Yue Liu and Jian-Feng Yao revised the manuscript. Le Wei and Qi Liu checked the draft. All authors read and accepted the final version of the manuscript. The authors Ming Li and Yu-Bo Xiao equally contributed to this work.
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Data Availability Statement
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