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1.
Nat Commun ; 15(1): 4047, 2024 May 14.
Article in English | MEDLINE | ID: mdl-38744873

ABSTRACT

Human hippocampal organoids (hHOs) derived from human induced pluripotent stem cells (hiPSCs) have emerged as promising models for investigating neurodegenerative disorders, such as schizophrenia and Alzheimer's disease. However, obtaining the electrical information of these free-floating organoids in a noninvasive manner remains a challenge using commercial multi-electrode arrays (MEAs). The three-dimensional (3D) MEAs developed recently acquired only a few neural signals due to limited channel numbers. Here, we report a hippocampal cyborg organoid (cyb-organoid) platform coupling a liquid metal-polymer conductor (MPC)-based mesh neuro-interface with hHOs. The mesh MPC (mMPC) integrates 128-channel multielectrode arrays distributed on a small surface area (~2*2 mm). Stretchability (up to 500%) and flexibility of the mMPC enable its attachment to hHOs. Furthermore, we show that under Wnt3a and SHH activator induction, hHOs produce HOPX+ and PAX6+ progenitors and ZBTB20+PROX1+ dentate gyrus (DG) granule neurons. The transcriptomic signatures of hHOs reveal high similarity to the developing human hippocampus. We successfully detect neural activities from hHOs via the mMPC from this cyb-organoid. Compared with traditional planar devices, our non-invasive coupling offers an adaptor for recording neural signals from 3D models.


Subject(s)
Hippocampus , Induced Pluripotent Stem Cells , Organoids , Humans , Organoids/metabolism , Organoids/cytology , Hippocampus/cytology , Hippocampus/metabolism , Induced Pluripotent Stem Cells/cytology , Induced Pluripotent Stem Cells/metabolism , Neurons/metabolism , Neurons/cytology , Metals/chemistry , Transcriptome , Dentate Gyrus/cytology , Dentate Gyrus/metabolism
2.
Mol Biotechnol ; 2024 Apr 18.
Article in English | MEDLINE | ID: mdl-38637449

ABSTRACT

This work was to demonstrate the relationship between serum 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), serum phosphorus (SP), and parathyroid hormone (PTH) and parathyroid function after central lymph node dissection (CLND) in patients with papillary thyroid carcinoma (PTC). 200 PTC patients after CLND were included, who were rolled into a control group (CG) (n = 89 cases without hypoparathyroidism) and an observation group (OG) (n = 111 cases with complicated hypoparathyroidism). The 1,25(OH)2D3, SP, and PTH levels were detected, and the diagnostic effect of these indicators was assessed. The serum PTH levels of patients in CG after surgery were normal relative to those before surgery, while the serum PTH of patients in OG was relatively lower. 1,25(OH)2D3 concentration of patients in OG was also inferior to CG, while the SP level was superior (P < 0.05). Hypoparathyroidism was positively correlated with serum PTH (r = 0.382) and 1,25(OH)2D3 (r = 0.321) and negatively correlated with SP (r = - 0.211). The area under the curve (AUC) (0.893), sensitivity (90.83%), and specificity (94.77%) of the joint diagnosis of 1,25(OH)2D3 + SP + PTH were greatly superior to those of the single diagnosis and the pairwise diagnosis with the three indicators (P < 0.05). Hypoparathyroidism in patients with PTC after CLND surgery was positively correlated with 1,25(OH)2D3 and PTH and negatively correlated with SP concentration. In addition, the combination diagnosis of 1,25(OH)2D3, PTH, and SP worked well.

3.
Nat Commun ; 14(1): 6494, 2023 10 14.
Article in English | MEDLINE | ID: mdl-37838683

ABSTRACT

Surface electromyography (sEMG) can provide multiplexed information about muscle performance. If current sEMG electrodes are stretchable, arrayed, and able to be used multiple times, they would offer adequate high-quality data for continuous monitoring. The lack of these properties delays the widespread use of sEMG in clinics and in everyday life. Here, we address these constraints by design of an adhesive dry electrode using tannic acid, polyvinyl alcohol, and PEDOT:PSS (TPP). The TPP electrode offers superior stretchability (~200%) and adhesiveness (0.58 N/cm) compared to current electrodes, ensuring stable and long-term contact with the skin for recording (>20 dB; >5 days). In addition, we developed a metal-polymer electrode array patch (MEAP) comprising liquid metal (LM) circuits and TPP electrodes. The MEAP demonstrated better conformability than commercial arrays, resulting in higher signal-to-noise ratio and more stable recordings during muscle movements. Manufactured using scalable screen-printing, these MEAPs feature a completely stretchable material and array architecture, enabling real-time monitoring of muscle stress, fatigue, and tendon displacement. Their potential to reduce muscle and tendon injuries and enhance performance in daily exercise and professional sports holds great promise.


Subject(s)
Muscles , Skin , Electromyography/methods , Electrodes , Tendons , Polymers
4.
World J Emerg Med ; 14(3): 179-185, 2023.
Article in English | MEDLINE | ID: mdl-37152526

ABSTRACT

BACKGROUND: This study aimed to explore the changes of programmed death-ligand 1 (PD-L1) and programmed death-1 (PD-1) expression on antigen-presenting cells (APCs) and evaluate their association with organ failure and mortality during early sepsis. METHODS: In total, 40 healthy controls and 198 patients with sepsis were included in this study. Peripheral blood was collected within the first 24 h after the diagnosis of sepsis. The expression of PD-L1 and PD-1 was determined on APCs, such as B cells, monocytes, and dendritic cells (DCs), by flow cytometry. Cytokines in plasma, such as interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), interleukin-4 (IL-4), IL-6, IL-10, and IL-17A were determined by Luminex assay. RESULTS: PD-1 expression decreased significantly on B cells, monocytes, myeloid DCs (mDCs), and plasmacytoid DCs (pDCs) as the severity of sepsis increased. PD-1 expression was also markedly decreased in non-survivors compared with survivors. In contrast, PD-L1 expression was markedly higher on mDCs, pDCs, and monocytes in patients with sepsis than in healthy controls and in non-survivors than in survivors. The PD-L1 expression on APCs (monocytes and DCs) was weakly related to organ dysfunction and inflammation. The area under the receiver operating characteristic curve (AUC) of the PD-1 percentage of monocytes (monocyte PD-1%)+APACHE II model (0.823) and monocyte PD-1%+SOFA model (0.816) had higher prognostic value than other parameters alone. Monocyte PD-1% was an independent risk factor for 28-day mortality. CONCLUSION: The severity of sepsis was correlated with PD-L1 or PD-1 over-expression on APCs. PD-L1 in monocytes and DCs was weakly correlated with inflammation and organ dysfunction during early sepsis. The combination of SOFA or APACHE II scores with monocyte PD-1% could improve the prediction ability for mortality.

5.
ACS Appl Mater Interfaces ; 15(21): 25393-25402, 2023 May 31.
Article in English | MEDLINE | ID: mdl-37195218

ABSTRACT

High biocompatibility and stability against water and scratch are crucial for liquid metal-based flexible electronics. Although previous studies have reported the chemical modification of liquid metal nanoparticles which can promote their water-stability and solution-processability, the modification process is complicated and hard to scale up. In particular, polydopamine (PD)-coated liquid metal nanoparticles (LMNPs) have not been used in flexible devices. We report the synthesis of the PD on LMNPs by thermal processing, which is controllable, fast, straightforward, and scalable. Because of the adhesiveness of PD, the PD@LM ink enables high-resolution printing on many substrates. The circuit printed by PD@LM shows high stability against repeated stretch in water (sustaining cardiomyocyte beating for 1 month─around 3 million times) and scratch. This conductive ink is highly biocompatible, conductive (4000 s/cm), and stretchable (up to 800% elongation). We cultured cardiomyocytes onto the PD@LM electrode and recorded the membrane potential change under electrical stimulation. For in vivo use, we fabricated a stable electrode to detect the electrocardiogram signal of a beating heart.


Subject(s)
Ink , Metals , Electronics , Water
6.
Environ Toxicol ; 38(7): 1618-1627, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37052432

ABSTRACT

Natural killer (NK) cells are the critical elements of the innate immune response and implicated in rapidly recognizing and eliminating cancer cells. However, the tumor-suppressive ability of NK cells is often impaired in several cancer types. The critical roles of microRNAs have been elucidated by increasing evidences, while the regulation of miR-338-3p in anti-tumor activation of NK cells and its relationship with estrogen in breast cancer (BC) are still confusing. Here, miR-338-3p level was found to be significantly downregulated in BC tissues and estrogen receptor positive (ER+ ) cells, this difference was more obvious in ER+ patients or BC patients at advanced stage (TNM III and IV). MiR-338-3p level was shown to be downregulated by 17ß-estradiol in BC cells (MDA-MB-231 cells and MCF-7) in vitro. MiR-338-3p overexpression decreased disintegrin and metalloprotease-17 (ADAM17) secretion in MDA-MB-231 (ER- ) and MCF-7 (ER+ ) cells. In addition, miR-338-3p overexpression or treatment with anti-ADAM17 antibody could down-regulate granzyme B, CD16, and NKG2D in NK cells, which was reversed by human recombinant ADAM17. Furthermore, these educated NK cells could promote the viability of MDA-MB-231 or MCF-7 cells. Taken together, our results demonstrate that miR-338-3p was negatively regulated by estrogen in BC cells, impairing NK cell's activity by the up-regulation of ADAM17, and conversely promoted the viability of BC cells. Therefore, the estrogen/miR-338-3p/ADAM17 axis is critically implicated in BC pathogenesis and may provide potential targets for BC diagnosis and treatment.


Subject(s)
ADAM17 Protein , Breast Neoplasms , MicroRNAs , Female , Humans , Breast Neoplasms/genetics , Breast Neoplasms/pathology , Cell Line, Tumor , Cell Proliferation , Estradiol/pharmacology , Estrogens/pharmacology , Gene Expression Regulation, Neoplastic , Killer Cells, Natural , MicroRNAs/genetics , ADAM17 Protein/metabolism
7.
Zhongguo Zhen Jiu ; 43(2): 153-7, 2023 Feb 12.
Article in Chinese | MEDLINE | ID: mdl-36808508

ABSTRACT

OBJECTIVE: To observe the effect of acupotomy on the fat infiltration degree of lumbar multifidus muscle (LMM) in patients with lumbar disc herniation after percutaneous transforaminal endoscopic discectomy (PTED). METHODS: A total of 104 patients with lumbar disc herniation treated with PTED were randomly divided into an observation group (52 cases, 3 cases dropped off) and a control group (52 cases, 4 cases dropped off). Patients of both groups received rehabilitation training of two weeks 48 h after PTED treatment. The observation group was treated with acupotomy (L3-L5 Jiaji [EX-B 2]) once within 24 h after PTED. In the two groups, the fat infiltration cross sectional area (CSA) of LMM was compared before and 6 months after PTED, the visual analogue scale (VAS) score and Oswestry disability index (ODI) score were observed before and 1, 6 months after PTED. The correlation between fat infiltration CSA of LMM in each segment and VAS score was analyzed. RESULTS: Six months after PTED, the fat infiltration CSA of LMM in L4/L5 and the total L3-S1 segments of the observation group was lower than that before PTED (P<0.05), and the fat infiltration CSA of LMM in L4/L5 of the observation group was lower than the control group (P<0.01). One month after PTED, the ODI and VAS scores of the two groups were lower than those before PTED (P<0.01), and those in the observation group were lower than the control group (P<0.05). Six months after PTED, the ODI and VAS scores of the two groups were lower than those before PTED and 1 month after PTED (P<0.01), and those in the observation group were lower than the control group (P<0.01). There was a positive correlation between the fat infiltration CSA of LMM in the total L3-S1 segments and VAS scores in the two groups before PTED (r = 0.64, P<0.01). Six months after PTED, there was no correlation between the fat infiltration CSA of LMM in each segment and VAS scores in the two groups (P>0.05). CONCLUSION: Acupotomy can improve the fat infiltration degree of LMM, pain symptoms and activities of daily living in patients with lumbar disc herniation after PTED.


Subject(s)
Acupuncture Therapy , Intervertebral Disc Displacement , Humans , Activities of Daily Living , Paraspinal Muscles , Treatment Outcome , Lumbar Vertebrae , Retrospective Studies , Endoscopy , Diskectomy
8.
Adv Biol (Weinh) ; 7(6): e2200297, 2023 06.
Article in English | MEDLINE | ID: mdl-36650944

ABSTRACT

Global emergence of multidrug-resistant (MDR) gram-negative bacteria triggers severe infections that result in an epidemic. It is urgent to discover novel classes of antibacterial agents. Here, a green route for synthesizing polyethylene glycol-based carbon dots (PEG-CDs) doped with liquid metal (LM-Cdots) via a solvent-free system is presented. LM-Cdots synthesized via ultrasound exhibit great antibacterial activity against gram-negative bacteria (E. coli, P. aeruginosa, K. pneumoniae, and A. baumannii) and their multidrug-resistant (MDR) clinical isolates. In the in vitro antibacterial test with MDR K. pneumoniae, LM-Cdots show an extremely low minimum inhibition concentration (MIC) of 0.63 µg mL-1 . Compared to naked PEG-CDs, the MIC is improved by 1000 times. In vivo results reveal that LM-Cdots can accelerate wound healing with low biotoxicity and inflammation.


Subject(s)
Anti-Bacterial Agents , Escherichia coli , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/therapeutic use , Gram-Negative Bacteria , Metals , Drug Resistance, Multiple, Bacterial , Klebsiella pneumoniae , Pseudomonas aeruginosa
9.
Journal of Forensic Medicine ; (6): 176-185, 2023.
Article in English | WPRIM (Western Pacific) | ID: wpr-981852

ABSTRACT

Biological matrix reference material is a reference material that combines the target material with the biological matrix. The biological matrix reference material has higher consistency with the authentic specimens in forensic toxicology, and its application has a positive effect on improving the accuracy of test results. This paper reviews the research on the matrix reference materials corresponding to three common biological test materials (blood, urine and hair). In order to provide reference for the development and application of biological matrix reference materials in forensic toxicology, this paper mainly introduces the research progress of preparation technology of biological matrix reference materials and some existing products and their parameters evaluation.


Subject(s)
Forensic Toxicology/methods , Hair , Body Fluids
10.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-969964

ABSTRACT

OBJECTIVE@#To observe the effect of acupotomy on the fat infiltration degree of lumbar multifidus muscle (LMM) in patients with lumbar disc herniation after percutaneous transforaminal endoscopic discectomy (PTED).@*METHODS@#A total of 104 patients with lumbar disc herniation treated with PTED were randomly divided into an observation group (52 cases, 3 cases dropped off) and a control group (52 cases, 4 cases dropped off). Patients of both groups received rehabilitation training of two weeks 48 h after PTED treatment. The observation group was treated with acupotomy (L3-L5 Jiaji [EX-B 2]) once within 24 h after PTED. In the two groups, the fat infiltration cross sectional area (CSA) of LMM was compared before and 6 months after PTED, the visual analogue scale (VAS) score and Oswestry disability index (ODI) score were observed before and 1, 6 months after PTED. The correlation between fat infiltration CSA of LMM in each segment and VAS score was analyzed.@*RESULTS@#Six months after PTED, the fat infiltration CSA of LMM in L4/L5 and the total L3-S1 segments of the observation group was lower than that before PTED (P<0.05), and the fat infiltration CSA of LMM in L4/L5 of the observation group was lower than the control group (P<0.01). One month after PTED, the ODI and VAS scores of the two groups were lower than those before PTED (P<0.01), and those in the observation group were lower than the control group (P<0.05). Six months after PTED, the ODI and VAS scores of the two groups were lower than those before PTED and 1 month after PTED (P<0.01), and those in the observation group were lower than the control group (P<0.01). There was a positive correlation between the fat infiltration CSA of LMM in the total L3-S1 segments and VAS scores in the two groups before PTED (r = 0.64, P<0.01). Six months after PTED, there was no correlation between the fat infiltration CSA of LMM in each segment and VAS scores in the two groups (P>0.05).@*CONCLUSION@#Acupotomy can improve the fat infiltration degree of LMM, pain symptoms and activities of daily living in patients with lumbar disc herniation after PTED.


Subject(s)
Humans , Intervertebral Disc Displacement , Activities of Daily Living , Paraspinal Muscles , Treatment Outcome , Lumbar Vertebrae , Retrospective Studies , Endoscopy , Diskectomy , Acupuncture Therapy
11.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-969954

ABSTRACT

Focusing on the phenomenon of "de-acupoints" of the needle insertion sites in Fu's subcutaneous needling (FSN), the authors allocated the evolution and characteristics of the needle insertion sites of FSN. From six aspects, named morphology and structure, location, nomenclature, numbers and meridian tropism, indications and acupuncture manipulations, the comparison was made between the insertion sites of FSN and traditional acupoints. It is believed: ①The needle insertion sites of FSN has the basic attributes of acupoint, which not only refers to the operation site, but also indicates the reaction of disease; moreover, it is the treatment site with significant therapeutic effect. ②The optimized sites of insertion in FSN should be named differently and their locations and numbers should be specified relatively. ③The insertion sites of FSN should be further intersected and integrated with traditional acupoints, and a part of traditional acupoints should become the insertion sites of FSN. ④Accepting and integrating the insertion sites of FSN, and expanding the scope of traditional acupoints may be the new project in the research of traditional acupoints.


Subject(s)
Moxibustion , Acupuncture Points , Acupuncture Therapy , Acupuncture , Meridians
12.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-972312

ABSTRACT

Glioma is a common primary malignant brain tumor. At present, the main clinical treatment is surgical resection combined with radiotherapy and chemotherapy. Due to the selective permeability of the blood-brain barrier and the characteristics of multi-drug resistance of tumor cells, the therapeutic effect is not ideal. In recent years, studies have found that borneol could open the blood-brain barrier and promote the infiltration of chemotherapy drugs. When borneol is combined with or co-carried with chemotherapy drugs, chemotherapy drugs could target more glioma tissues and increase efficacy. The preclinical studies on the combination of borneol and chemotherapy drugs in recent years were reviewed in this article, in order to provide useful reference for the treatment of glioma.

13.
Asian Journal of Andrology ; (6): 404-409, 2023.
Article in English | WPRIM (Western Pacific) | ID: wpr-981951

ABSTRACT

Male infertility caused by idiopathic oligoasthenospermia (OAT) is known as idiopathic male infertility. Glutathione S-transferase (GST) and fluoride may play important roles in idiopathic male infertility, but their effects are still unknown. Our study examined the relationship between GST polymorphisms and fluoride-induced toxicity in idiopathic male infertility and determined the underlying mechanism. Sperm, blood, and urine samples were collected from 560 males. Fluoride levels were measured by a highly selective electrode method, and GST genotypes were identified using polymerase chain reaction (PCR) and PCR-restriction fragment length polymorphism (PCR-RFLP). Semen parameters, DNA fragmentation index (DFI), mitochondrial membrane potential (MMP), and oxidative stress (OS) biomarkers were statistically assessed at the P < 0.05 level. Compared with healthy fertile group, semen parameters, fluoride levels, OS biomarkers, sex hormone levels, and MMP and DFI levels were lower in the idiopathic male infertility group. For glutathione S-transferase M1 (GSTM1[-]) and glutathione S-transferase T1 (GSTT1[-]) or glutathione S-transferase P1 (GSTP1) mutant genotypes, levels of semen fluoride, OS, MMP, and DFI were considerably higher, and the mean levels of sperm parameters and testosterone were statistically significant in GSTM1(+), GSTT1(+), and GSTP1 wild-type genotypes. Both semen and blood fluoride levels were associated with oxidative stress in idiopathic male infertility patients. Elevated fluoride in semen with the genotypes listed above was linked to reproductive quality in idiopathic male infertility patients. In conclusion, GST polymorphisms and fluorine may have an indicative relationship between reproductive quality and sex hormone levels, and OS participates in the development of idiopathic male infertility.


Subject(s)
Humans , Male , Fluorides/adverse effects , Semen , Polymorphism, Genetic , Glutathione Transferase/genetics , Glutathione S-Transferase pi/genetics , Infertility, Male/genetics , Genotype , Biomarkers , Genetic Predisposition to Disease , Case-Control Studies
14.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-981572

ABSTRACT

As one of the standard electrophysiological signals in the human body, the photoplethysmography contains detailed information about the blood microcirculation and has been commonly used in various medical scenarios, where the accurate detection of the pulse waveform and quantification of its morphological characteristics are essential steps. In this paper, a modular pulse wave preprocessing and analysis system is developed based on the principles of design patterns. The system designs each part of the preprocessing and analysis process as independent functional modules to be compatible and reusable. In addition, the detection process of the pulse waveform is improved, and a new waveform detection algorithm composed of screening-checking-deciding is proposed. It is verified that the algorithm has a practical design for each module, high accuracy of waveform recognition and high anti-interference capability. The modular pulse wave preprocessing and analysis software system developed in this paper can meet the individual preprocessing requirements for various pulse wave application studies under different platforms. The proposed novel algorithm with high accuracy also provides a new idea for the pulse wave analysis process.


Subject(s)
Humans , Systems Analysis , Algorithms , Software , Heart Rate , Microcirculation
15.
Acta Pharmaceutica Sinica ; (12): 2914-2921, 2023.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-999050

ABSTRACT

At present, the digitalization and intelligence level of dripping pills production process is low, and there is a lack of process monitoring methods, which makes it difficult to effectively control the quality of dripping pills. Therefore, this paper proposed an online monitoring method for the dripping process of dripping pills based on laser detection technology and multivariate data analysis (MVDA) technology. Firstly, the width data of the falling droplets during the dripping process of the dripping pills were collected by the laser detector at a high frequency. Secondly, based on the width data, the nodes were selected for each droplet and the features were extracted. Then, the principal component analysis (PCA) model was established based on the feature dataset under normal process conditions, and Hotelling's T2 or DModX statistic was selected to determine whether the droplets in the dripping process were abnormal, and the abnormalities were classified and diagnosed by the principal component score map combined with K-nearest neighbor (KNN) algorithm. In this study, the feasibility of this method was investigated by taking the dripping process of Ginkgo biloba leaf dripping pills as an example. The results showed that the obtained model has good detection and diagnosis ability for abnormal valve opening, abnormal liquid temperature, and abnormal liquid volume. This method can provide some reference for the industrial production of dripping pills.

16.
BMC Musculoskelet Disord ; 23(1): 1081, 2022 Dec 12.
Article in English | MEDLINE | ID: mdl-36503513

ABSTRACT

BACKGROUND: Minimally invasive plate osteosynthesis (MIPO) via percutaneous plate placement on the distal medial tibia can be performed with minimizes soft tissue injury and produces good clinical results. However, the difficulty with MIPO lies in how to achieve satisfactory fracture reduction and maintain that reduction via indirect reduction techniques to facilitate internal fixation. The purpose of this study was to compare the effects of AO distractor and manual traction reduction techniques combined with MIPO in the treatment of distal tibia fractures. METHODS: Between January 2013 and December 2019, 58 patients with a distal tibia fracture were treated using MIPO. Patients were divided into two groups according to the indirect reduction method that was used: 26 patients were reduced with manual traction(group M), and 32 were reduced with an AO distractor (group A).Time until union and clinical outcomes including AOFAS ankle-rating score and ankle range of ankle motion at final follow-up were compared. Mean operative time, incision length, blood loss and postoperative complications were recorded via chart review. Radiographic results at final follow-up were assessed for tibial angulation and shortening by a blinded reader. RESULTS: Mean operative time, incision length, and blood loss in group A were significantly lower than in group M(p = 0.019, 0.018 and 0.016, respectively).Radiographic evidence of bony union was seen in all cases, and mean time until union was equivalent between the two groups (p = 0.384).Skin irritation was noted in one case(3.1%) in group A and three cases(11.5%)in group M, but the symptoms were not severe and the plate was removed after bony union. There was no statistically significant difference in postoperative complications between the two groups(p = 0.461). Mean AOFAS score and range of ankle motion were equivalent between the two groups, as were varus deformity, valgus deformity, anterior angulation and posterior angulation. No patients had gross angular deformity. Mean tibial shortening was not significantly different between the two groups, and no patients had tibial shortening > 10 mm. CONCLUSION: Both an AO distractor and manual traction reduction techniques prior to MIPO in the treatment of distal tibial fractures permit a high fracture healing rate and satisfying functional outcomes with few wound healing complications. An AO distractor is an excellent indirect reduction method that may improve operative efficiency and reduce the risk of soft tissue injury.


Subject(s)
Soft Tissue Injuries , Tibial Fractures , Humans , Minimally Invasive Surgical Procedures/adverse effects , Minimally Invasive Surgical Procedures/methods , Radiography , Tibial Fractures/diagnostic imaging , Tibial Fractures/surgery , Bone Plates , Fracture Fixation, Internal/adverse effects , Fracture Fixation, Internal/methods , Fracture Healing , Soft Tissue Injuries/etiology , Postoperative Complications/etiology , Treatment Outcome
17.
Nano Lett ; 22(18): 7554-7562, 2022 09 28.
Article in English | MEDLINE | ID: mdl-36122317

ABSTRACT

Safe and effective local drug delivery is challenging due to complex physiological barriers that limit the entry of drugs. Here, we report the metal-polymer conductors (MPCs) for local drug delivery via iontophoresis or electroporation. The MPCs are stretchable, conductive, and biocompatible. The flexible MPCs of different geometries are used both on a dry, flat surface (skin) and a moist, curved surface (cornea) with conformability. Conformal integration with the tissues enables good mechanical/electrical properties and realizes application of electrical voltage to the target areas for local drug delivery. By iontophoresis and electroporation, the MPCs achieve efficient delivery of doxorubicin and siRNA, leading to tumor regression and inhibition of corneal neovascularization, respectively. Our work presents an efficient strategy to harness the power of the MPCs to broaden the scope of local drug delivery to dry and wet organs with different surface topography.


Subject(s)
Iontophoresis , Polymers , Doxorubicin/therapeutic use , Drug Delivery Systems , Electroporation , Metals , RNA, Small Interfering
18.
Nano Lett ; 22(11): 4482-4490, 2022 06 08.
Article in English | MEDLINE | ID: mdl-35580197

ABSTRACT

Comfort and mechanical stability are vital for epidermal electronics in daily use. In situ deposition of circuitry without the protection of substrates or encapsulation can produce imperceptible, conformal, and permeable epidermal electronics. However, they are easily destroyed by daily wear because the binding force between deposited materials and skin is usually weak. Here, we in situ deposited skin-adhesive liquid metal particles (ALMP) to fabricate epidermal electronics with robust wear resistance. It represents the most wear-resistant in situ deposited epidermal electronic materials. It can withstand ∼1600 cm, 175 g loaded paper tape wearing by a standard abrasion wear tester. Stretchability, conformality, permeability, and thinness of the ALMP coating provide an imperceptible and comfortable wearing experience. Without degradation of electrical property caused by solvent evaporation, the dry ALMP coating possesses natural advantages over gel electrodes. In situ deposited ALMP is an ideal material for fabricating comfortable epidermal electronics.


Subject(s)
Adhesives , Electronics , Electrodes , Metals , Skin
19.
Ann Transl Med ; 10(6): 337, 2022 Mar.
Article in English | MEDLINE | ID: mdl-35433941

ABSTRACT

Background: Tumor-infiltrating immune cells are instrumental in the spread, resurgence, metastasis, and immunotherapy responsiveness of endometrial cancer (EC), which is a prevalent, malignant gynecologic tumor with a dismal prognosis. Many questions remain about the safety and effectiveness of immunotherapy, so we investigated both the patients' immunological condition and the molecular subtypes of EC. Methods: Relevant data sets were collected from the The Cancer Genome Atlas (TCGA), and the CIBERSORT and ESTIMATE methods were used to assess the immune microenvironment and immune cell infiltration (ICI) in uterine corpus EC (UCEC) tumors. Using the immunophenoscore (IPS), the differentially expressed genes between low and high IPS were identified, and the immune gene subtypes of UCEC were further explored. Based on the main effect genes among the immune molecular subtypes, a tumor ICI scoring model was constructed. Results: There was individual heterogeneity in the characteristics of ICI in the tumor samples, and these characteristics were associated with overall survival (OS). The IPS was quantified by the pattern of gene differential expression, and five immune molecular subtypes were constructed. The levels of PD1/PD-L1 expression in these subtypes showed significant differences, and there were also differences in gene mutation profiles between low- and high-ICI scores. Conclusions: The ICI score of UCEC samples can be used to predict the benefit of immunotherapy.

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