ArticleWorld journal of gastrointestinal pharmacology and therapeutics2026
Mechanism of Xiaozhiling injection in the treatment of internal hemorrhoids based on changes in perianal blood flow and rectal submucosal fibers.
Article in World journal of gastrointestinal pharmacology and therapeutics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundBased on the traditional Chinese medicine theory that "acid can astringe and consolidate", Xiaozhiling Injection is a multi-award-winning traditional Chinese medicine preparation. It is developed from gallnut and alum, with tannic acid and potassium aluminum sulfate as its main components. Clinically, it demonstrates excellent efficacy and high safety in treating mid-grade hemorrhoids. Characterized by minimal invasiveness, few dietary restrictions, wide age adaptability, and mild postoperative reactions, this injection has shown distinct therapeutic advantages. Since its introduction decades ago, its sclerotherapy technique has been widely adopted both in China and internationally. Clinical follow-up studies have indicated relatively low recurrence rates over the long term, confirming its stable efficacy and low complication rate. Additionally, research using animal models has further verified the effectiveness of Xiaozhiling Injection and explored its mechanisms through pathological and immunohistochemical analyses.
aimTo investigate the mechanism underlying the therapeutic effect of Xiaozhiling injection by observing the presence of internal hemorrhoids during different periods.
methodsAn internal hemorrhoid model was successfully established, and intervention with Xiaozhiling injection was investigated 8 hours, 3 days, 1 week, 2 weeks, 1 month, and 4 months after injection. By observing the appearance of the anus, performing laser speckle blood flow imaging, determining the rectal submucosa thickness, observing pathological morphology, and conducting immunohistochemical staining of anorectal tissues from rats, the changes in various indices were evaluated at different time points after Xiaozhiling injection.
resultsThe degree of internal hemorrhoidal mucosal eminence in the anuses of the rats gradually decreased. Laser speckle blood flow imaging revealed that the anorectal hemoperfusion flow first increased but then decreased, and microvascular dilation first increased but then decreased. Microscopy revealed vascular dilation of the submucosal interstitium, and the thickness of the submucosa first increased but then decreased. Immunohistochemical staining for myeloperoxidase indicated that the chronic inflammatory reaction first increased but then stabilized, CD61 expression indicated platelet aggregation, martius-scarlet-blue expression indicated red blood cell mud-like stasis, and CD42b expression indicated that platelet activation first increased but then decreased.
conclusionXiaozhiling injection can stimulate the proliferation of collagen fibres in the submucosa and make loose connective tissue compact and neat, thus exerting therapeutic effects. This study is expected to provide a new direction for the minimally invasive treatment of internal haemorrhoids.
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