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. 2022 Jun 14:13:935117.
doi: 10.3389/fphar.2022.935117. eCollection 2022.

Dose-Effect Relationship of Chitosan and Danshen Combined Injection for Fallopian Tube Recanalization

Affiliations

Dose-Effect Relationship of Chitosan and Danshen Combined Injection for Fallopian Tube Recanalization

Chen Huang et al. Front Pharmacol. .

Abstract

Objectives: This study examined the dose-effect relationship of chitosan and danshen combined injections on the long-term prevention of fallopian tube re-obstructions, with increased pregnancy rates in infertile women. Methods: High-performance liquid chromatography was used to determine the content changes of combined chitosan and danshen injection. Two hundred and eighty patients with fallopian tube obstructions were randomly assigned to four groups. Group A (control group, saline), Group B (2 ml chitosan, 4 ml danshen), Group C (2 ml chitosan, 10 ml danshen), and Group D (1 ml chitosan, 10 ml danshen). Injections were administered after tubal recanalization. Results: The effective constituent of chitosan and danshen injection was stable. Tubal patency rate was 94.2% and 87.3% in Group C after 1 and 3 years, respectively, which was significantly higher than Groups A (38.6%, 31.5%), B (73.5%, 64.1%), and D (68.5%, 50.7%). Intrauterine pregnancy rates were 61.8% and 79.4% in Group C after 1 and 3 years, respectively, and were significantly higher than Groups A (31.8%, 34.8%), B (40.1%, 62.5%), and D (38.5%, 58.5%) (p < 0.05). Conclusion: Combined Chitosan and danshen injections prevented tubal obstruction and increased pregnancy rates for long periods using an optimal ratio of 1 part chitosan and 5 parts danshen.

Keywords: chitosan; danshen; dose-effect relationships; drug delivery; fallopian tube recanalization.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

FIGURE 1
FIGURE 1
Chromatogram Chart. (A). The 210 nm wavelength shows the peak for carboxymethyl chitin (a). (B). The 280 nm wavelength shows peaks for salvianic acid A sodium (b) and protocatechualdehyde (c).
FIGURE 2
FIGURE 2
Flow chart illustrating patient recruitment and analysis.
FIGURE 3
FIGURE 3
Pre- and post-injection salpingography. (A). Control group. (A1), The right fallopian tube completely obstructed at the preoperative stage. (A2), The right fallopian tube partially unobstructed 1 day after interventional recanalization. (B). Chitosan and danshen combined injection group (Group 2, 1:2 ratio) (B1), The right fallopian tube completely obstructed at the pre-injection stage. (B2), The right fallopian tube unobstructed 1 day after interventional recanalization. (C). Chitosan and danshen combined injection group (Group C, 1:5 ratio) (C1), The left fallopian tube completely obstructed at the preoperative stage. (C2), The left fallopian tube unobstructed 1 day after interventional recanalization. (D). Chitosan and danshen combined injection group (Group D, 1:10 ratio) (D1), The left fallopian tube completely obstructed at the pre-injection stage. D2, The left fallopian tube unobstructed 1 day after interventional recanalization.
FIGURE 4
FIGURE 4
Selective salpingography showed fallopian tubes obstructed 1 year post-injection. (A), Control group; (B), Chitosan and Danshen combined injection group (1:2); (C), Chitosan and Danshen injection group (1:5); and (D), Chitosan and Danshen combined injection group (1:10). The yellow arrow shows the tube recanalized.
FIGURE 5
FIGURE 5
Selective salpingography showed fallopian tubes partially obstructed 3 years post-injection. (A), Control group; (B), Chitosan and Danshen combined injection group (1:2); (C), Chitosan and Danshen combined injection group (1:5); and (D), Chitosan and Danshen combined injection group (1:10). The blue arrow shows the tube partially recanalized.

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