Effect of metal-ligand interactions on magnetic characteristics of two-dimensional Kagome structured perthiolated coronene (PTC) metal-organic frameworks (MOFs).

In recent years, the potential applications of two-dimensional (2D) metal-organic framework (MOF) materials in fields like spintronics have drawn increasing attention. Inspired by the successful synthesis of a perthiolated coronene (PTC)-Fe MOF structure, this study explores the fine-tuning of its electronic and magnetic structure by substituting Fe elements with various transition metals. Our calculations demonstrate a substantial increase in the Curie temperature (Tc) by a factor of 5 for Co and 10 for Mn when replacing Fe. This enhancement is attributed to the elevated electron density near the Fermi level, facilitating the generation of additional itinerant electrons crucial for the Ruderman-Kittel-Kasuya-Yosida (RKKY) exchange mechanism. However, substituting Fe with V, Cr, Ni, and Cu leads to a loss of ferromagnetic ground state. Our work enhances the understanding of the electronic and magnetic behavior of the 2D PTC-TM (transition metal) MOF family, and provides a promising avenue for engineering 2D magnetic MOF systems.

CT-based radiomics combined with clinical features for invasiveness prediction and pathological subtypes classification of subsolid pulmonary nodules.

Purpose: To construct optimal models for predicting the invasiveness and pathological subtypes of subsolid nodules (SSNs) based on CT radiomics and clinical features. Materials and Methods: This study was a retrospective study involving two centers. A total of 316 patients with 353 SSNs confirmed as atypical adenomatous hyperplasia (AAH), adenocarcinoma in situ (AIS), minimally invasive adenocarcinoma (MIA) and invasive adenocarcinoma (IAC) were included from January 2019 to February 2023. Models based on CT radiomics and clinical features were constructed for classification of AAH/AIS and MIA, MIA and IAC, as well as lepidic-predominant adenocarcinoma (LPA) and acinar-predominant adenocarcinoma (APA). Receiver operating characteristic (ROC) curve was used to evaluate the model performance. Finally, the nomograms based on the optimal models were established. Results: The nomogram based on the combined model (AAH/AIS versus MIA) consisting of lobulation, the GGN-vessel relationship, diameter, CT value, consolidation tumor ratio (CTR) and rad-score performed the best (AUC=0.841), while age, CT value, CTR and rad-score were the significant features for distinguishing MIA from IAC, the nomogram based on these features performed the best (AUC=0.878). There were no significant differences in clinical features between LPA and APA, while the radiomics model based on rad-score showed good performance for distinguishing LPA from APA (AUC=0.926). Conclusions: The nomograms based on radiomics and clinical features could predict the invasiveness of SSNs accurately. Moreover, radiomics models showed good performance in distinguishing LPA from APA.

Repair effect of human umbilical cord mesenchymal stem cell-derived small extracellular vesicles on ovarian injury induced by cisplatin.

Small extracellular vesicles (sEVs) secreted by human umbilical cord have therapeutic effects on various degenerative diseases. However, the characteristics and potential functions of human umbilical cord mesenchymal stem cells (huMSCs)-derived sEVs, especially the role of premature ovarian failure (POF), are poorly understood. Here, we isolated and characterized huMSCs and their sEVs. huMSCs highly expressed CD73, CD90, and CD105. huMSC-sEVs showed typical exosomal features, highly expressing CD9, TSG101, and CD63. It was shown that huMSC-sEVs could be taken up by granulosa cells (GCs) and damaged ovarian tissue, which increased the levels of hormone secretion and reduced GCs apoptosis. We further confirmed that the levels of follicle-stimulating hormone in rat serum decreased dramatically, while the levels of estrogen (E2）and anti-mullerian hormone (AMH) increased significantly with the treatment of huMSC-sEVs. Meanwhile, huMSC-sEVs treatment greatly reduced cell apoptosis and autophagy, while increased the phosphorylation levels of p-PI3K and p-Akt. Therefore, treatment with huMSC-sEVs significantly inhibited GCs apoptosis, improved ovarian morphology, promoted follicular development, inhibited follicular over-atresia, and improved ovarian reserve capacity in POF rats. Our study verified that activation of PI3K/Akt signaling pathway and regulation of cellular autophagy, thus reducing GCs death, are the mechanisms by which huMSC-sEVs restore ovarian tissue function.

Clinical observation of laparoscopic sleeve gastrectomy and metformin treatment in obese PCOS patients.

Background: To observe the basic metabolic characteristics of obese patients with polycystic ovarian syndrome (PCOS), and observe and compare the effect of laparoscopic sleeve gastrectomy and metformin treatment after 3 months. Methods: In January to December 2018, the Second Hospital of Hebei Medical University selected 104 women who were classified as obese with a body mass index (BMI) of 28 kg/cm2 or higher and had PCOS. They were divided into obese PCOS group (53 cases) and obese non-PCOS group (51 cases). Results: 1. There was no significant difference in waist circumference and WHR between patients who are obese with PCOS and patients who are obese without PCOS (P > 0.05). Obese PCOS patients were significantly higher in anti-Müllerian hormone (AMH), LH/FSH, T, FAI, homa-ir, triglyceride (TG), low density lipoprotein (LDL), Apo-B and uric acid than the group of non-PCOS patients who were obese. (P<0.05). The SHBG levels of obese patients with PCOS were obviously lower when contrasted with the levels in obese patients without PCOS (P < 0.05). 2. Body weight, BMI, INS, homa-ir and TG of obese PCOS patients were significantly decreased 3 months after laparoscopic sleeve gastrectomy compared with that before surgery (P < 0.05). After three months of medical treatment with metformin, the patients' homeostatic model assessment of insulin resistance (HOMA-IR) was obviously reduced when contrasted with the pre-treatment HOMA-IR levels (P < 0.05), and there was no significant difference in the improvement degree of homa-ir between the two groups (P > 0.05). Conclusions: 1. Obese patients with PCOS demonstrated higher expression of AMH, LH/FSH, T, SHBG, and FAI when contrasted with the control group. Additionally, they experienced more severe insulin resistance and lipid metabolism disorders. 2. The weight and BMI of obese PCOS patients were significantly decreased after weight loss, while IR and blood lipid were significantly improved, while IR was improved in metformin group, and no significant discrepancy was observed in the degree of improvement of insulin resistance between both groups.

Adult-type granulosa cell tumor associated with elevated luteinizing hormone: Two rare case reports.

INTRODUCTION: Adult-type granulosa cell tumors (AGCTs), which account for 2% to 5% of all malignant ovarian tumors, are rare sex cord-stromal tumors that usually secrete excess estrogens, but they can also secrete androgens. PATIENT CONCERNS: We report 2 patients of childbearing age with AGCT who presented with the complaint of abnormal menstruation and elevated luteinizing hormone (LH), and mildly elevated testosterone. DIAGNOSIS: The ovarian tumors had hormonal activity. INTERVENTIONS: The 2 patients underwent laparoscopic left adnexectomy. The second patient underwent 4 cycles of chemotherapy with paclitaxel and carboplatin as adjuvant treatments. OUTCOMES: Their postoperative pathology confirmed AGCTs. Also, their menstrual cycle returned to normal, with normal serum LH and testosterone levels. There was no sign of recurrence. CONCLUSION: The cases suggest that elevated serum LH levels may be a sign of unknown tumors in cases of oligomenorrhea or secondary amenorrhea. It is useful to evaluate the serum levels of inhibin B and anti-Müllerian hormone to improve the early recognition of ovarian granulosa cell tumors.

Impact of subchorionic hematoma on pregnancy outcomes in women with recurrent pregnancy loss.

We conducted a retrospective cohort study with the aim of investigating the relationship between subchorionic hematoma (SCH) and pregnancy outcomes in women with recurrent pregnancy loss (RPL). We reviewed all RPL patients who came to the Fourth Hospital of Shijiazhuang from January 2019 to June 2021. Two groups were divided according to the presence or absence of SCH. Live birth rate was considered as the primary outcome. Secondary outcomes included adverse pregnancy outcomes and complications. Univariable and multivariable analyses were conducted. Of 274 RPL women included in the final analysis, 49 (17.9%) had SCH. The occurrence of thrombophilia was significantly higher in SCH group than that in non-SCH group (38.8% vs 24.4%, P=0.041). There were no significant differences between the two groups in live birth rate, adverse pregnancy outcomes and pregnancy complications. Among women with SCH, live birth rate or SCH duration was not associated with continued use of low-dose aspirin (LDA) after the diagnosis of SCH. Our findings suggest that SCH does not reduce live birth rate in RPL women or increase the risk of adverse pregnancy outcomes or pregnancy complications. Continued use of LDA after the detection of a hematoma is unlikely to affect SCH duration or the live birth rate.

Efficacy and Safety of the Bushen-Shugan Method in Pregnancy Outcomes in Patients with Recurrent Miscarriage Complicated by Anxiety and Depression: A Prospective Randomized Trial.

Objective: This study aimed to investigate the effect of the Bushen-Shugan (BSSG) method on pregnancy outcomes, serum D-dimer (D-D), platelet aggregation rate, homocysteine (Hcy) and antithrombin III (AT-III) in patients with recurrent miscarriage complicated by anxiety and depression. Methods: From December 2016 to December 2019, 100 patients with recurrent miscarriage combined with anxiety and depression were enrolled in our study, and a prospective randomized trial was carried out. Patients were randomly assigned to either the control group or the BSSG group via the random number table method. Traditional Chinese medicine (TCM) syndrome scores, laboratory indicators and psychological changes were compared in the 2 groups before and after treatment. Results: After treatment, the primary, secondary and total TCM syndrome scores in the 2 groups were lower, and the scores in the BSSG group were significantly lower than in the control group. The clinical curative effect in the BSSG group was significantly higher (92% vs 76%) than in the control group. The levels of ß-HCG, P, E2 and AT-III in the 2 groups were higher, while levels of D-D, platelet aggregation rate and Hcy were lower than before treatment. The Self-rating Anxiety Scale (SAS) and Self-rating Depression Scale (SDS) scores were lower after treatment in both groups, and the scores in the BSSG group were significantly lower than in the control group. Conclusions: The BSSG method may be worthy of consideration because it improves pregnancy outcomes in patients with recurrent miscarriage complicated by anxiety and depression.

Ultrasound examination assisted clinical diagnosis of Leydig cell tumor of ovary: An extremely rare case report.

INTRODUCTION: Leydig cell tumor (LCT) is a sex cord-stromal tumor, which is a clinically rare ovarian tumor. It is characterized by endocrine hormonal changes and usually occurs in postmenopausal women. PATIENT CONCERNS: We report the clinical case of a 38-year-old female of childbearing age with LCT of the right ovary who presented with significantly decreased menstrual flow and elevated androgen levels, with persistent hypoechoic areas in the ovary as demonstrated by transvaginal ultrasound. DIAGNOSIS: The transvaginal ultrasound suggested the presence of a hypoechoic area in the right ovary with elevated androgens, interstitial tumor of the ovarian sex cord may be considered. INTERVENTIONS: The patient underwent laparoscopic right adnexectomy. OUTCOMES: Postoperative pathology confirmed the morphology and immunohistochemistry of the right adnexa consistent with LCT, and no areas of malignant transformation were found on multiple sections of the surgical specimen. The patient had normal androgen levels at postoperative day 2, day 45 and month 3. There was no sign of recurrence. CONCLUSION: This case suggests that when women of childbearing age have abruptly decreased menstrual flow with increased testosterone, clinicians should pay attention to intra-ovarian occupying lesions and consider the possibility of LCT. In such cases, ultrasound examination can determine the presence, location, shape and size of occupying ovarian lesions and play an important role in the diagnosis of condition.