Publications by authors named "Limin Feng"

Background: Abdominal pregnancy is characterized by the implantation of the gestational sac within the peritoneal cavity, specifically outside the fallopian tubes, ovaries, and cervix. This exceedingly rare form of ectopic pregnancy accounts for about 1% of all ectopic pregnancies. When rupture occurs, it can result in a life-threatening situation for the patient, necessitating immediate medical intervention.

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Background: Intrauterine adhesion (IUA) is a common cause of clinically refractory infertility, and there exists significant heterogeneity in the treatment outcomes among IUA patients with the similar severity after transcervical resection of adhesion(TCRA). The underlying mechanism of different treatment outcomes occur remains elusive, and the precise contribution of various cell subtypes in this process remains uncertain.

Results: Here, we performed single-cell transcriptome sequencing on 10 human endometrial samples to establish a single-cell atlas differences between patients who responded to estrogen therapy and those who did not.

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We have developed a glycosyl radical-based synthesis of -alkyl glycosides through a deoxygenative Giese addition-reduction-cyclization cascade, in which readily available 1-hydroxy carbohydrates serve as precursors for glycosyl radicals and aryl alkenes function as radical acceptors. This reaction not only provides an effective method for accessing a previously underexplored class of functionalized cyclopropanes but also enhances the application of Giese addition in the synthesis of -alkyl glycosides by derivatizing the radical intermediate generated through polar cyclization to yield a cyclopropane.

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Background: The study aims to investigate the application of surgical vaginoscopy via a no-touch hysteroscopic approach for the management of female genital polyps. The primary objective is to assess the feasibility of this technique in treating intrauterine pathologies in both pregnant and non-pregnant women.

Methods: A total of forty-six patients diagnosed with genital polyps underwent operative vaginoscopy at a university-affiliated hospital between April 1, 2017 and May 31, 2023.

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Background: We aimed to develop a nomogram to predict abnormal follow-up results of co-testing for cytology and human papillomavirus (HPV) in cervical intraepithelial neoplasia (CIN) patients after conization.

Research Design And Methods: Two hundred sixty-three patients initially diagnosed as CIN2+ were recruited. Data on immunohistochemical (IHC) staining scores, along with demographic and clinical information were collected.

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Article Synopsis
  • Inhibiting secondary cell death and promoting neuronal regeneration is crucial for repairing spinal cord injuries (SCI), as excessive reactive oxygen species (ROS) contribute to nerve damage and cell death.
  • The study developed a nanozyme hydrogel delivery system called LA/Me/Se NPs-h, which effectively stabilizes and enhances the bioavailability of therapeutic drugs against oxidative stress following SCI.
  • Results from mouse models showed that LA/Me/Se NPs-h significantly improved locomotor function and reduced neuronal damage by increasing antioxidant enzyme activity and decreasing neuronal apoptosis, highlighting its potential as a treatment for SCI and related disorders.
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  • Krukenberg tumor is a rare type of ovarian cancer that often shows up with symptoms like abdominal pain and swelling, commonly due to both ovaries being affected.
  • The case study discusses a 39-year-old woman who experienced unusual symptoms like abdominal distension and shortness of breath, leading to the discovery of the tumor.
  • The tumor was confirmed to be signet ring cell carcinoma, and it was associated with Pseudo-Meigs' syndrome, highlighting the importance for doctors to consider this syndrome in similar cases for potential effective treatment.
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Background: Transcervical resection of adhesions (TCRA) is the standard treatment for intrauterine adhesion (IUA). Previous studies have shown that postoperative oral estrogen or an intrauterine physical barrier could reduce the recurrence of IUA by promoting the proliferation of the endometrium or inhibiting the reformation of adhesions. Our team designed an intrauterine stent that can release estrogen within the uterine cavity slowly.

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The gut microbiota plays an important role in the immunology, physiology and growth and development of animals. However, currently, there is a lack of available sequencing data on the gut microbiota of Asian badgers. Studying the gut microbiota of Asian badgers could provide fundamental data for enhancing productivity and immunity of badgers' breeding, as well as for the protection of wild animals.

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  • This study evaluates the safety and effectiveness of cervical polypectomy using vaginoscopy in pregnant women diagnosed with cervical polyps.
  • Two groups were compared: one group underwent the polypectomy procedure with vaginoscopy while the other received conservative management.
  • Results showed that the vaginoscopy group experienced fewer instances of preterm birth and premature rupture of membranes, suggesting it may be a safer option for managing cervical polyps during pregnancy.
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We report herein a deoxygenative radical multicomponent reaction involving alcohols, aryl alkenes, and cyanopyridine under photoredox conditions. This method is photoredox-neutral, suitable for late-stage modification, and compatible with a wide array of alcohols as alkyl radical sources, including primary, secondary, and tertiary alcohols. This reaction comprises a radical relay mechanism encompassing the Giese addition of aryl alkenes by alkyl radicals, followed by the decyanative pyridination of benzyl radicals.

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Background: Immunohistochemistry (IHC) is widely used in the management of patients with cervical intraepithelial neoplasia (CIN) but still has many limitations in clinical practice. We analyzed the correlation of new biomarkers with the severity of CIN and follow-up outcomes in patients after conization to improve the management of patients with CIN.

Methods: IHC staining of Eag1 and p16/Ki-67 was performed on cervical tissue sections from 234 patients with suspected CIN2/3.

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Raman spectroscopy has been widely used for label-free biomolecular analysis of cells and tissues for pathological diagnosis in vitro and in vivo. AI technology facilitates disease diagnosis based on Raman spectroscopy, including machine learning (PCA and SVM), manifold learning (UMAP), and deep learning (ResNet and AlexNet). However, it is not clear how to optimize the appropriate AI classification model for different types of Raman spectral data.

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Dysgerminoma is a rare occurrence in Turner syndrome patients without Y chromosome mosaicism or hormone therapy during puberty. We present a unique case of a 33-year-old nulliparous Chinese woman with intermittent epilepsy and Mullerian anomalies carrying a double uterus, cervix, and vagina. The patient is also characterized as having Turner syndrome accompanied by 46,X, del(Xp22.

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Article Synopsis
  • The study reviews the underutilized intrauterine balloon (IUB) therapy in gynecological practice, especially compared to its well-established use in obstetrics for postpartum hemorrhage.
  • It identifies three main areas of focus: indications for use, practical aspects of balloon therapy (like ultrasound guidance and inflation), and potential complications (such as pain and infection) along with prevention strategies.
  • Overall, IUB therapy is highlighted as a simple, cost-effective, and adaptable treatment option for various gynecological issues, with rare complications that can typically be prevented with proper technique.
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Acute myocardial ischemia is a disease with high morbidity and mortality, and re-perfusion is currently the best intervention. However, re-perfusion may lead to further myocardial injury and increase the area of myocardial infarction. The mechanism of myocardial ischemia-re-perfusion injury is complex, but with more in-depth study, it has been proved that the immune system plays an important role in the process of MIRI.

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Metastasis is the primary cause of death of hepatocellular carcinoma (HCC), while the mechanism underlying this severe disease remains largely unclear. The Kruppel-like factor (KLF) family is one of the largest transcription factor families that control multiple physiologic and pathologic processes by governing the cellular transcriptome. To identify metastatic regulators of HCC, we conducted gene expression profiling on the MHCC97 cell series, a set of subclones of the original MHCC97 that was established by in vivo metastasis selection therefore harbouring differential metastatic capacities.

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Diet analysis is essential to fully understand the biology of a species and its function within the ecosystem, as well as being key in identifying food web interactions and the population dynamics of predators and prey. The understanding of the diet of small to mid-sized carnivores remains generally lacking or uninformative due to the inability for taxonomic resolution based on morphology. The yellow-throated marten (), Eurasian river otter (), and Siberian weasel () are three important Mustelidae species in ecosystems of northeast China.

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Article Synopsis
  • Late marriage and relaxed family planning policies have led to more women delaying pregnancy and an increase in pregnancies among older women, highlighting the need for fertility preservation.
  • Intrauterine conditions like fibroids and adhesions can negatively impact fertility by affecting embryo implantation and development.
  • Hysteroscopy is the best method for diagnosing and treating these conditions, and improving access and training in this technology can enhance female fertility outcomes.
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Background: The aim was to investigate the relationship between the vitamin D (VitD) level and the incidence rate of subclinical hypothyroidism in patients with gestational diabetes mellitus (GDM) in early pregnancy.

Methods: Ninety eligible patients who underwent physical examination from March 2015 to September 2017 were selected. The levels of serum 25-hydroxyvitamin D (25-OH-VD), free thyroxine (FT4), free triiodothyronine (FT3), thyroid stimulating hormone (TSH), and thyroid peroxidase antibody (TPOAb) were measured.

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The Chinese Loess Plateau has been the cradle of Chinese civilization and the main human settlement in China for thousands of years, where anthropogenic activities are believed to have deeply eroded natural landscapes. After decades of minimal leopard sighting in forests of northern China, due to serious human interference, we recently discovered that the leopard population is recovering. This finding provides hope for successful biodiversity conservation in human-dominated ecosystems.

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Unlabelled: To explore on the association between nucleic acid turning-negative-time and traditional Chinese medicine (TCM) symptoms in coronavirus disease 2019 (COVID-19) patients with the Omicron variant.

Method: For this retrospective cross-sectional study, we enrolled 189 patients with COVID-19 (age 20-90 years) were included. multiple linear regression models were used to investigate the TCM symptoms affecting the nucleic acid turning-negative-time of COVID-19 patients, during the process of data analysis, taking with nucleic acid turning-negative-time as the dependent variable, and TCM symptoms as independent variables, and at the same time, sex, age, hypertension, diabetes, and coronary heart disease were as confounding variables.

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Camera traps are widely used in wildlife surveys and biodiversity monitoring. Depending on its triggering mechanism, a large number of images or videos are sometimes accumulated. Some literature has proposed the application of deep learning techniques to automatically identify wildlife in camera trap imagery, which can significantly reduce manual work and speed up analysis processes.

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