Association between Waist-Hip Ratio and Female Infertility in the United States: Data from National Health and Nutrition Examination Survey 2017-2020.

INTRODUCTION: Obesity has previously been correlated with an elevated risk of reproductive system diseases in women. The waist-hip ratio (WHR) has been shown to be correlated with visceral fat, making it one of the most commonly used indicators of abdominal obesity. However, little is known about the relationship between WHR and infertility. Therefore, the aim of this study was to evaluate the effect of the WHR on infertility in women of childbearing age. METHODS: The study used cross-sectional data from women aged 20-45 who participated in the National Health and Nutrition Examination Survey (NHANES), which was conducted between 2017 and 2020. We collected details of their waist circumference, hip circumference, fertility status, and several other essential variables. We used multivariate logistic regression analysis and subgroup analyses to assess the association between WHR and infertility. RESULTS: There were 976 participants, with 12.0% (117/976) who experienced infertility. After adjusting for potential confounding factors, our multivariate logistic regression analysis revealed that every 0.1 unit increase in WHR resulted in a more than 35% higher risk of infertility (odds ratio [OR; 95% confidence interval [CI]: 1.35 [1.01∼1.81], p = 0.043). Compared to the group with WHR <0.85, the risk of infertility increased in the group with WHR ≥0.85, with an adjusted OR of 1.74 (95% CI: 1.06∼2.85). When WHR was treated as a continuous variable, it was observed that each 0.1 unit increase in WHR was associated with a relatively high risk in the secondary infertility population after adjusting all covariates, with an OR of 1.66 (95% CI: 1.14∼2.40, p = 0.01). When WHR was analyzed as a categorical variable, the group with WHR ≥0.85 exhibited a significantly higher risk of secondary infertility than the group with WHR <0.85, with the OR of 2.75 (95% CI: 1.35-5.59, p = 0.01) after adjusting for all covariates. Furthermore, the interaction analysis indicated that there was a significant interaction between age status on WHR and the risk of infertility. CONCLUSION: WHR showed a positive correlation with the risk of infertility. This study highlights the importance of effectively managing abdominal fat and promoting the maintenance of optimal WHR levels to mitigate the progression of infertility, particularly for younger women.

The Fracture Incidence and Safety of Teriparatide and Bisphosphonate in Postmenopausal Women With Osteoporosis: A Meta-Analysis.

Objective: To evaluate the anti-fracture effect and adverse effects of teriparatide versus bisphosphonate on postmenopausal osteoporosis. This study will provide evidence-based practice for the clinical selection of more effective and safer drugs for these patients. Methods: We searched PubMed, Embase, and the Cochrane Library from database inception to July 2022. The keywords included "fracture"; "teriparatide", "bisphosphonate", "postmenopausal women", and "osteoporosis". Randomized controlled trials (RCTs) comparing teriparatide versus bisphosphonates on the risk of fracture and adverse effects in postmenopausal osteoporosis were included in the analysis. Results: Finally, 3376 participants were recruited in all 5 RCTs. The results revealed that teriparatide could decrease the rate of clinical vertebral fracture (OR=1.97, 95% CI=1.43-2.73, I2 = 0%, P < .0001) and new vertebral fractures (OR=2.44, 95% CI=1.70-3.50, I2 = 0%, P < .00001) compared with bisphosphonate. AE results refer to the type and frequency of adverse effects related to drug treatment. The rate of treatment discontinuous due to AEs (OR=0.63, 95% CI=0.48-0.83, I2 = 44%, P = .0009) with teriparatide was significantly greater than that with bisphosphonate. However, there was no significant difference in the incidence of adverse events to death (OR=0.59, 95% CI=0.30-1.18, I2 = 0%, P = .13). The proportion of patients reporting adverse events in the teriparatide versus bisphosphonate groups was consistent across subgroups, except for the rate of dizziness (OR=0.53, 95% CI=0.31-0.90, I2 = 49%, P = .02). Conclusions: Among postmenopausal women with osteoporosis, clinical vertebral fractures and new vertebral fractures decreased more in patients receiving teriparatide than in those receiving bisphosphonate. Although there were no differences in adverse events across subgroups, patients receiving teriparatide had a higher rate of dizziness than those receiving bisphosphonate.The results of this work will provide a reference for clinicians to select appropriate anti-osteoporosis drugs by comprehensively considering individual differences such as fracture risk and dizziness tolerance.

Visible-light-mediated sulfonylation of anilines with sulfonyl fluorides.

Sulfonylaniline motif plays an important role in pharmaceutical sciences. Developed methods towards this structure are typically lack of good modifiability and stability. In this study, visible-light-mediated sulfonylation of aniline using sulfonyl fluoride as a modifiable and stable sulfonylation reagent is described. A variety of substituted sulfonylanilines were synthesized under mild reaction conditions with moderate to good efficiency. The example of late-stage sulfonylation highlighted the advantage of using sulfonyl fluoride as a sulfonylation reagent. In addition, the crucial influence of counterions on the photocatalyst observed in this system would inspire further research on the photochemistry of sulfonyl fluoride.

[Chemical Constituents from Leaves of Liquidambar formosana].

OBJECTIVE: To study the chemical constituents of the leaves of Liquidambarformosana. METHODS: The chemical constituents were isolated and purified by column chromatography on silicagel, Sephadex LH-20 and MPLC. Their structures were elucidated on the basis of physicochemical properties and special analysis. RESULTS: Eight compounds were isolated from the leaves of Liquidambar formosana, whose structures were elucidated as gallic acid (1), p-hydroxy-benzoic acid (2), 3-methoxy-4-hydroxy-benzoic acid (3), 3,5-dihydroxy-4-methoxy-benzoic acid (4) kaempferol (5), 3,4-dihydroxy-benzoic acid (6), 3,4-dihydroxy-5-methoxy-benzoic acid (7) and 3ß,23,29-trihydroxy-olean-12-en-28-oic acid-ß-D-glucopyranosyl ester (8). CONCLUSION: Compounds 1-8 are isolated from the leaves of Liquidambar formosana for the first time.

[Chemical constituents of Salix matsudana leaf].

OBJECTIVE: To study the chemical constituents of the leaf of Salix matsudana. METHODS: The chemical constituents were isolated by column chromatography on silica gel, Sephadex LH-20 and MPLC. Their structures were elucidated on the basis of spectral analysis. RESULTS: Eight compounds were isolated and their structures were identified as beta-Sitosterol(1),5,7-Dihydroxychromone-7-O-beta-D-glucopyranoside(2), (2S)-Helichrysin A(3), (2R)-Helichrysin A(4), Luteolin-7-O-beta-D-glucoside(5), Salicin(6), Apigenin-7-O-beta-D-glucopyranside(7), Lutelion-3'-methylether-7-O-f-D-glucopyranside(8). CONCLUSION: Compounds 1-4 are isolated from this plant for the first time.