1.Cage design-centric glider approach to full-endoscopic lumbar fusion: optimizing nerve root protection in facet-sparing and facet-resecting techniques
Yu-Chia HSU ; Hao-Chun CHUANG ; Yuan-Fu LIU ; Chao-Jui CHANG ; Yu-Meng HSIAO ; Yi-Hung HUANG ; Keng-Chang LIU ; Chien-Min CHEN ; Hyeun-Sung KIM ; Cheng-Li LIN
Asian Spine Journal 2026;20(2):343-353
Endoscopic transforaminal lumbar interbody fusion (TLIF) offers substantial advantages in the management of degenerative spinal diseases, including accelerated postoperative recovery. However, its technical complexity and steep learning curve pose risks for nerve root injury. Optimizing nerve root protection in full-endoscopic facet-sparing TLIF (FE fs-TLIF) and full-endoscopic facet-resecting TLIF (FE fr-TLIF) is essential for enhancing surgical safety. This study aimed to improve the nerve root protection in FE fs-TLIF and FE fr-TLIF by optimizing cage glider selection and insertion techniques based on the specific cage shape—banana-shaped or bullet-shaped. The goal was to ensure safe cage positioning and mitigate nerve root injury during discectomy, endplate preparation, and cage insertion. These strategies were validated through cadaveric simulations and clinical implementation. In FE fr-TLIF utilizing bullet-shaped (straight) cages, one-tip and two-tip cage gliders effectively protected the traversing nerve root by facilitating medial cage entry, thereby minimizing irritation of the exiting nerve root. Conversely, in FE fr-TLIF with banana-shaped cages, the lateral tilt of the cage holder during implantation required the use of a two-tip cage glider to protect the traversing and exiting nerve roots, thereby mitigating the potential risk of nerve irritation. In FE fs-TLIF, a one-tip cage glider is preferred for safeguarding the exiting nerve root, while the traversing root is inherently protected by the medial wall of the facet joint. The use of a two-tip cage glider in FE fs-TLIF can cause injury to the nerve root during glider insertion. In addition to the selection of cage gliders, improper cage insertion steps can also contribute to postoperative neurapraxia. The appropriate selection of cage gliders with corresponding insertion techniques is critical for nerve root protection in endoscopic TLIF. Tailoring these choices to the specific approach (FE fs-TLIF or FE fr-TLIF) and cage type (banana or bullet) enhances surgical safety and clinical outcomes.
2.The first record of Anopheles messeae (Diptera: Culicidae) parasitized by water mites in China
Xue-ru CHEN ; Wen-zhen YAO ; Yu-hao LI ; Gui-chang LI ; Tao MENG ; Qun-ling FENG ; Xin-hui LIU ; Li-hong QIAO ; Xiang-ting WU ; Xue-feng ZHANG ; Cheng-lin LI ; Xue-cheng DONG ; Da-wei WANG ; Xiao-yan SI ; Yu-hong GUO
Acta Parasitologica et Medica Entomologica Sinica 2026;33(1):53-57
Objective This study reports on the obligatory parasitism of water mites Arrenurus sp. on Anopheles messeae at the Manzhouli Port, Inner Mongolia, China. Methods Duing July 2024, a survey on the mosquito diversity was conducted at the Manzhouli Port. Captured mosquitoes and their ectoparasites were identified to species level. Results A total of 1840 adult mosquitoes were collected, representing species from three genera: Culex(Cx. modestus, Cx. pipiens pallens), Aedes(Ae. dorsalis, Ae. flavidorsalis, Ae. flavescens), and Anopheles (An. messeae). Among all the mosqutioes specimens,3 out of 150 captured An. messeae were found to carry ectoparasitic mites, with number of 2,4,27 mites separately. Morphological and molecular identification reached the same result as water mites(Hydrachnidiae, Hydracrina). COI gene sequence showed 94% similarity with the closest species Arrenurus truncatellus. Conlusions Literature review suggests water mites are host-specific parasitism of mosquito species and herein with the first record of Arrenurus sp. parasiting on An. Messeae in the most high-latitude region globally.
3.Aerobic Exercise and MOTS-c Ameliorate Hepatic Oxidative Stress and Metabolic Disorder in Type 2 Diabetes via The NRF2/PPARγ Axis
Fei-Long CHEN ; Zhi-Yu LI ; Tu-Tu WANG ; Yu FU ; Lei LÜ ; Cheng-Yuan XING ; Shun-Chang LI
Progress in Biochemistry and Biophysics 2026;53(8):2071-2090
ObjectiveType 2 diabetes mellitus (T2DM) often causes severe hepatic metabolic complications, dominated by metabolic associated fatty liver disease (MAFLD). Persistent hepatic steatosis and oxidative stress further trigger steatohepatitis and progressive liver damage, increasing the mortality risk of diabetic patients. Aerobic exercise effectively improves hepatic lipid metabolism and antioxidant capacity, but poor patient adherence restricts its long-term clinical application. Mitochondrial-derived mitochondrial open reading frame of the 12S rRNA type-c (MOTS-c) is a key peptide regulating insulin sensitivity and hepatic redox homeostasis. This study aimed to explore the protective mechanism of MOTS-c against T2DM-related liver injury and its combined beneficial effect with aerobic exercise via the NRF2/PPARγ signaling axis. This study aimed to investigate whether MOTS-c cooperates with aerobic exercise to alleviate T2DM-associated hepatic oxidative stress and metabolic dysfunction by activating the NRF2/PPARγ axis, and to clarify the molecular and transcriptomic characteristics of their combined intervention. MethodsStable MOTS-c overexpression and knockdown HepG2 cell lines were constructed using lentiviral transfection. An oleic acid-induced cellular lipid accumulation model and NRF2-knockout cell model were applied to verify the NRF2-dependent mechanism ofMOTS-c. Intracellular lipid deposition, triglyceride levels, antioxidant enzyme activities, and the expression of NRF2/PPARγ pathway-related genes and proteins were detected. In vivo, a T2DM rat model with obvious hepatic steatosis was established via a high-fat and high-sucrose diet combined with streptozotocin injection. Model rats received aerobic exercise, MOTS-c intraperitoneal injection, or combined intervention. We detected systemic glycolipid metabolic indicators, hepatic histopathological changes, and the expression of core proteins in the hepatic NRF2/PPARγ axis. Hepatic transcriptomic sequencing was performed to screen differentially expressed genes (DEGs) and enrich key pathways co-regulated by MOTS-c and aerobic exercise. ResultsCellular results showed that MOTS-c overexpression significantly reduced oleic acid-induced lipid deposition, enhanced antioxidant enzyme activity, and upregulated NRF2 and PPARγ expression. Conversely, MOTS-c knockdown aggravated hepatic lipid accumulation and oxidative damage and inhibited NRF2/PPARγ pathway activation. NRF2 knockout completely eliminated the protective effects of MOTS-c on lipid metabolism and redox balance, confirming its NRF2-dependent regulatory mechanism. In T2DM rats, both MOTS-c supplementation and aerobic exercise effectively improved insulin resistance, corrected glycolipid metabolic disorders, and alleviated hepatic steatosis, while consistently activating the hepatic NRF2/PPARγ axis. Compared with single intervention, the combined treatment showed a better improvement trend in hepatic metabolic and oxidative injury, without definitive synergistic effects. Transcriptomic analysis revealed that the co-regulated DEGs of MOTS-c and aerobic exercise were primarily enriched in lipid metabolism and PPAR signaling pathways, with multiple antioxidant and lipid-regulating genes significantly modulated by combined intervention. ConclusionMOTS-c exhibits obvious exercise-mimetic hepatoprotective effects in T2DM. It activates the hepatic NRF2/PPARγ axis to strengthen antioxidant defense, stabilize lipid metabolism, and relieve T2DM-associated hepatic steatosis and oxidative damage. Furthermore, MOTS-c produces additive beneficial effects with aerobic exercise, showing a superior intervention trend on diabetic liver dysfunction. This study identifies the NRF2/PPARγ axis as the core mechanism of MOTS-c-regulated hepatic protection, elucidates the transcriptomic basis of combined intervention, and provides a reliable theoretical basis and potential therapeutic target for clinical intervention in T2DM-complicated MAFLD.
4.Exploring on Mechanism of Forsythiae Fructus-Lonicerae Japonicae Flos in Treatment of Acute Lung Injury Based on Serum Metabolomics
Wanshun CHANG ; Kang LI ; Zhaohua CHEN ; Yuqing HAN ; Yanwen CHEN ; Yanhui ZHU ; Zhenyu CHENG ; Haiying HUANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(24):117-125
ObjectiveTo investigate the mechanism of Forsythiae Fructus-Lonicerae Japonicae Flos(FF) in the treatment of acute lung injury(ALI) by investigating the effects of FF on serum metabolomics of rats with ALI. MethodsThirty male SD rats were acclimated for 1 week, and 6 rats were randomly selected as the blank group. The other 24 rats were injected with lipopolysaccharide(LPS) solution by tracheal drip to establish an ALI model. After successful model establishment, the rats were randomly divided into the model group, the FF low-dose group(3.0 g·kg-1), the FF high-dose group(6.0 g·kg-1), and the dexamethasone group(5 mg·kg-1), with six rats in each group. The FF low- and high-dose groups and the dexamethasone group were received daily oral administration of the corresponding drug solution, and the blank group and the model group were gavaged with an equal amount of saline, treatment was administered continuously for 3 d. The pathological conditions of rat lung tissues were evaluated by hematoxylin-eosin(HE) staining, wet/dry mass ratio(W/D) of the lung tissues, and protein concentration in rat bronchoalveolar lavage fluid(BALF). Metabolomic analysis of rat serum was performed by ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry(UPLC-Q-TOF-MS), combined with multivariate statistical analysis, the potential biomarkers of FF in treating ALI were screened by variable importance in the projection(VIP) value>1, P<0.05 from t-test, and log2fold change(FC)>1 or log2FC<-1. Kyoto Encyclopedia of Genes and Genomes(KEGG) database combined with MetaboAnalyst were used for pathway analysis of the screened differential metabolites. The protein expression levels of sphingosine-1-phosphate(S1P), phosphatidylinositol 3-kinase(PI3K), protein kinase B1(Akt1), and phosphorylated Akt1(p-Akt1) were examined by Western bolt. The expression levels of interleukin(IL)-6, IL-1β, and tumor necrosis factor(TNF)-α in BALF were detected by enzyme-linked immunosorbent assay(ELISA). ResultsCompared with the blank group, rats in the model group showed ALI pathological features such as alveolar lumen dilatation, interstitial hemorrhage and massive inflammatory cell infiltration, and the protein concentration in BALF and W/D of the lung tissues were significantly elevated(P<0.01). Compared with the model group, the low- and high-dose groups of FF as well as the dexamethasone group exhibited reduced pulmonary bronchial hemorrhage in rats, and the protein concentration in BALF and W/D were significantly decreased(P<0.05), and the lung injury was significantly alleviated. Analysis of rat serum metabolomics revealed that FF downregulated 38 biomarkers. Pathway enrichment analysis showed that FF primarily exerted therapeutic effects through 7 key metabolic pathways, including arginine biosynthesis, sphingomyelin metabolism, alanine, aspartate and glutamate metabolism, taurine and hypotaurine metabolism, α-linolenic acid metabolism, niacin and nicotinamide metabolism, and retinol metabolism. The results of Western bolt and ELISA showed that, compared with the blank group, the model group exhibited significantly elevated expression levels of S1P, PI3K, Akt1 and p-Akt1 proteins in the lung tissues, as well as increased expression levels of IL-6, IL-1β and TNF-α in BALF(P<0.01). Compared with the model group, the expression levels of the aforementioned indicators were significantly downregulated in the low- and high-dose FF groups as well as the dexamethasone group(P<0.05, P<0.01). ConclusionFF may play a role in ALI by regulating amino acid metabolism and lipid metabolism, and its mechanism may be related to the inhibition of S1P/PI3K/Akt1 signaling pathway to attenuate the inflammatory response caused by ALI.
5.Effect of governor vessel moxibustion on cardiopulmonary fitness in stable chronic obstructive pulmonary disease with qi deficiency of lung and kidney.
Hongxin CHEN ; Lixia CHEN ; Jing XU ; Mengting CHANG ; Xirong CHENG
Chinese Acupuncture & Moxibustion 2025;45(12):1717-1722
OBJECTIVE:
To observe the effect of governor vessel moxibustion on improving cardiopulmonary fitness in patients with stable chronic obstructive pulmonary disease (COPD) of qi deficiency of lung and kidney.
METHODS:
A total of 40 patients with stable COPD of qi deficiency of lung and kidney were randomized into an observation group (20 cases) and a control group (20 cases). The routine basic treatment and nursing were adopted in the control group. In the observation group, on the basis of the treatment in the control group, governor vessel moxibustion was applied at the area from Dazhui (GV14) to Yaoshu (GV2) of the governor vessel, 1 hour a time, once a week. Both groups were treated for 8 weeks consecutively. The maximal oxygen uptake (VO2max), 6-minute walking test (6MWT) and Borg score, pulmonary function indexes (forced expiratory volume in 1 second [FEV1], forced vital capacity [FVC] and ratio of FEV1 and FVC [FEV1/FVC]), chronic obstructive pulmonary disease assessment test (CAT) score, and TCM syndrome score were observed in the two groups before and after treatment respectively.
RESULTS:
After treatment, the VO2max, 6MWT, FEV1, FVC and FEV1/FVC were increased compared with those before treatment in the two groups (P<0.001, P<0.05), the above indexes in the observation group were higher than those in the control group (P<0.05, P<0.01). After treatment, the Borg, CAT and TCM syndrome scores were decreased compared with those before treatment in the two groups (P<0.05, P<0.001), the above indexes in the observation group were lower than those in the control group (P<0.05).
CONCLUSION
Governor vessel moxibustion can effectively improve the cardiopulmonary fitness, clinical symptoms and the quality of life in patients with stable COPD of qi deficiency of lung and kidney.
Humans
;
Moxibustion
;
Pulmonary Disease, Chronic Obstructive/physiopathology*
;
Male
;
Female
;
Middle Aged
;
Aged
;
Qi
;
Lung/physiopathology*
;
Kidney/physiopathology*
;
Acupuncture Points
6.Glutamatergic neurons in thalamic paraventricular nucleus may be involved in the regulation of abnormal sleep behavior of Shank3 gene knockout mice.
Chang-Feng CHEN ; Lie-Cheng WANG ; Yong LIU ; Lei CHEN
Acta Physiologica Sinica 2025;77(5):792-800
The purpose of this study was to investigate the anxiety-like behaviors, circadian rhythms and sleep, and to elucidate the possible underlying mechanisms of the abnormal sleep behavior in Shank3 gene knockout (Shank3-KO) mice. The anxiety-like behaviors were detected by elevated plus-maze (EPM) test, open field test (OFT) and tail suspension test (TST). The circadian rhythms were detected by running wheel test. The electroencephalogram (EEG)/electromyogram (EMG) recordings were performed synchronically by polysomnograph. The distribution of SHANK3 in anterior cingulate cortex (ACC), paraventricular thalamus (PVT), nucleus accumbens (NAc), basolateral amygdala (BLA) and hippocampal CA2 region in wild type (WT) mice was detected by immunofluorescence assay. The protein expression of c-Fos in PVT, ACC and NAc was also detected by immunofluorescence assay during light cycle. The colocalization of c-Fos and vesicular glutamate transporter 2 (Vglut2, a marker for glutamatergic neurons) in the PVT was detected by immunofluorescence double labeling experiment. The results of EPM test showed that, compared with the WT mice, the Shank3-KO mice showed less time in open arms and less number of open arm entries. The results of OFT showed that the Shank3-KO mice showed less time in central area and less number of central area entries. The immobility time of Shank3-KO mice was increased in the TST. The results of running wheel rhythm test showed that the phase shift time of Shank3-KO mice in the continuous dark period was increased. The results of EEG/EMG recording showed that, compared with the WT mice, the duration of wakefulness in Shank3-KO mice was increased and the duration of non-rapid eye movement (NREM) sleep was decreased during light phase; The bout number of wakefulness was increased, the bout number of NREM sleep was decreased, NREM-wake transitions were increased, and wake-NREM transitions were decreased during light phase. SHANK3 was expressed in ACC, PVT, NAc and BLA in the WT mice. The expression of c-Fos in the PVT of Shank3-KO mice was up-regulated 2 h after entering the light phase, and majority of c-Fos was co-localized with Vglut2. These results suggest that the anxiety level of Shank3-KO mice is increased, the regulation of the internal rhythms is decreased, and the bout number of wakefulness is increased during light phase. The glutamatergic neurons in PVT may be involved in the regulation of abnormal sleep behavior in Shank3-KO mice during the light phase.
Animals
;
Mice, Knockout
;
Mice
;
Neurons/metabolism*
;
Nerve Tissue Proteins/physiology*
;
Male
;
Midline Thalamic Nuclei/cytology*
;
Circadian Rhythm/physiology*
;
Sleep/physiology*
;
Anxiety/physiopathology*
;
Proto-Oncogene Proteins c-fos/metabolism*
;
Vesicular Glutamate Transport Protein 2/metabolism*
;
Mice, Inbred C57BL
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Microfilament Proteins
7.Exploration of pharmacodynamic material basis and mechanism of Jinbei Oral Liquid against idiopathic pulmonary fibrosis based on UHPLC-Q-TOF-MS/MS and network pharmacology.
Jin-Chun LEI ; Si-Tong ZHANG ; Xian-Run HU ; Wen-Kang LIU ; Xue-Mei CHENG ; Xiao-Jun WU ; Wan-Sheng CHEN ; Man-Lin LI ; Chang-Hong WANG
China Journal of Chinese Materia Medica 2025;50(10):2825-2840
This study aims to explore the pharmacodynamic material basis of Jinbei Oral Liquid(JBOL) against idiopathic pulmonary fibrosis(IPF) based on serum pharmacochemistry and network pharmacology. The ultra-high performance liquid chromatography-quadrupole time-of-flight tandem mass spectrometry(UHPLC-Q-TOF-MS/MS) technology was employed to analyze and identify the components absorbed into rat blood after oral administration of JBOL. Combined with network pharmacology, the study explored the pharmacodynamic material basis and potential mechanism of JBOL against IPF through protein-protein interaction(PPI) network construction, "component-target-pathway" analysis, Gene Ontology(GO) functional enrichment, and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment analysis. First, a total of 114 compounds were rapidly identified in JBOL extract according to the exact relative molecular mass, fragment ions, and other information of the compounds with the use of reference substances and a self-built compound database. Second, on this basis, 70 prototype components in blood were recognized by comparing blank serum with drug-containing serum samples, including 28 flavonoids, 25 organic acids, 4 saponins, 4 alkaloids, and 9 others. Finally, using these components absorbed into blood as candidates, the study obtained 212 potential targets of JBOL against IPF. The anti-IPF mechanism might involve the action of active ingredients such as glycyrrhetinic acid, cryptotanshinone, salvianolic acid B, and forsythoside A on core targets like AKT1, TNF, and ALB and thereby the regulation of multiple signaling pathways including PI3K/AKT, HIF-1, and TNF. In conclusion, JBOL exerts the anti-IPF effect through multiple components, targets, and pathways. The results would provide a reference for further study on pharmacodynamic material basis and pharmacological mechanism of JBOL.
Drugs, Chinese Herbal/pharmacokinetics*
;
Animals
;
Tandem Mass Spectrometry
;
Network Pharmacology
;
Rats
;
Chromatography, High Pressure Liquid
;
Rats, Sprague-Dawley
;
Male
;
Idiopathic Pulmonary Fibrosis/metabolism*
;
Humans
;
Administration, Oral
;
Protein Interaction Maps/drug effects*
;
Signal Transduction/drug effects*
8.Research status of experimental animal models of sepsis.
Zhenglin CHANG ; Bingsen CHEN ; Haojie WU ; Zhangkai CHENG ; Baoqing SUN
Chinese Critical Care Medicine 2025;37(3):310-316
Sepsis is a lethal condition resulting from the host's dysregulated response, involving complex pathophysiological mechanisms, including the host's biphasic immune response and metabolic disturbances. Diagnosing and treating sepsis remain formidable challenges, with the absence of definitive biomarkers and effective therapeutic interventions to date. Animal models of sepsis are pivotal in unraveling the disease's pathogenesis and identifying potential treatments, playing a crucial role in enhancing our comprehension of its intrinsic nature. However, there is no animal model that can comprehensively and accurately simulate the complex pathophysiological process of human sepsis. This review discusses the widely used sepsis animal models, exploring their advantages and limitations in terms of pathogenesis, inflammatory response, pathophysiological changes, and organ dysfunction. It summarizes the application scenarios and latest research advancements of these models and provides an outlook on potential future improvements.
Sepsis/physiopathology*
;
Animals
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Disease Models, Animal
;
Humans
9.Effects of dietary supplements on patients with osteoarthritis: A systematic review and network meta-analysis.
Chang-Shun CHEN ; Lei WEN ; Fei YANG ; Yong-Cheng DENG ; Jian-Hua JI ; Rong-Jin CHEN ; Zhong CHEN ; Ge CHEN ; Jin-Yi GU
Journal of Integrative Medicine 2025;23(4):357-369
BACKGROUND:
A growing body of research is exploring the role of antioxidant and anti-inflammatory dietary supplements in the treatment of osteoarthritis, highlighting an increasing emphasis on non-pharmacological interventions. Although more patients are turning to supplements to manage osteoarthritis, their actual effectiveness remains uncertain.
OBJECTIVE:
This study aims to provide a comprehensive evaluation of the available evidence concerning the efficacy of various dietary supplements in osteoarthritis treatment.
SEARCH STRATEGY:
We searched PubMed, Embase, Cochrane Library and Web of Science for studies on the use of various dietary supplements in the treatment of osteoarthritis from the creation of each database until Jan 20, 2025.
INCLUSION CRITERIA:
(1) Research object: osteoarthritis. (2) Intervention measures: patients in the treatment group received dietary supplements, while the control group received placebos. (3) Research type: randomized controlled trials (RCTs).
DATA EXTRACTION AND ANALYSIS:
Two researchers independently examined the literature and retrieved data based on predefined criteria. The information gathered included the first author, year of publication, sample size, participant demographics, length of the follow-up period, intervention and control measures, and inclusion indications. RCTs comparing dietary supplements to placebo with the pain and function subscales of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) among patients with osteoarthritis were included. The optimal dietary supplement was identified based on the total ranking by summing the surface under the cumulative ranking curve (SUCRA) of these two scores. Furthermore, the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) was used to confirm the quality of the evidence.
RESULTS:
Overall, 23 studies covering 21 dietary supplements and involving 2455 participants met the inclusion criteria. In the WOMAC pain score, the SUCRA of passion fruit peel extract was 91% (mean difference [MD]: -9.2; 95% confidence interval [CI]: [-16.0, -2.3]), followed by methylsulfonylmethane (89%), undenatured type II collagen (87%), collagen (84%), and Lanconone (82%). The SUCRA (99%) of passion fruit peel extract (MD: -41.0; 95% CI: [-66.0, -16.0]) ranked first in terms of the WOMAC function score, followed by Lanconone (95%), collagen (86%), ParActin (84%), and Lactobacillus casei strain Shirota (83%). The top three total rankings are passion fruit peel extract (95.0%), Lanconone (88.5%), and collagen (85.0%). However, the GRADE revealed low evidence quality.
CONCLUSION
Passion fruit peel extract was the best supplement for improving WOMAC pain and function scores in patients with osteoarthritis, followed by Lanconone and collagen. However, further large-scale, well designed RCTs are required to substantiate these promising findings. Please cite this article as: Chen CS, Wen L, Yang F, Deng YC, Ji JH, Chen RJ, Chen Z, Chen G, Gu JY. Effects of dietary supplements on patients with osteoarthritis: A systematic review and network meta-analysis. J Integr Med. 2025; 23(4): 357-369.
Humans
;
Dietary Supplements
;
Osteoarthritis/drug therapy*
;
Randomized Controlled Trials as Topic
10.HIV Pretreatment Drug Resistance and Transmission Clusters among Newly Diagnosed Patients in the China-Myanmar Border Region, 2020-2023.
Huan LIU ; Yue Cheng YANG ; Xing DUAN ; Yi Chen JIN ; Yan Fen CAO ; Yi FENG ; Chang CAI ; He He ZHAO ; Hou Lin TANG
Biomedical and Environmental Sciences 2025;38(7):840-847
OBJECTIVE:
This study aimed to investigate the prevalence of HIV pretreatment drug resistance (PDR) and the transmission clusters associated with PDR-related mutations in newly diagnosed, treatment-naive patients between 2020 and 2023 in Dehong prefecture, Yunnan province, China.
METHODS:
Demographic information and plasma samples were collected from study participants. PDR was assessed using the Stanford HIV Drug Resistance Database. The Tamura-Nei 93 model within HIV-TRACE was employed to compute pairwise matches with a genetic distance of 0.015 substitutions per site.
RESULTS:
Among 948 treatment-naive individuals with eligible sequences, 36 HIV subtypes were identified, with unique recombinant forms (URFs) being the most prevalent (18.8%, 178/948). The overall prevalence of PDR was 12.4% (118/948), and resistance to non-nucleotide reverse transcriptase inhibitors (NNRTIs), nucleotide reverse transcriptase inhibitors (NRTIs), and protease inhibitors (PIs) was 10.7%, 1.3%, and 1.6%, respectively. A total of 91 clusters were identified, among which eight showed evidence of PDR strain transmission. The largest PDR-associated cluster consisted of six CRF01_AE drug-resistant strains carrying K103N and V179T mutations; five of these individuals had initial CD4+ cell counts < 200 cells/μL.
CONCLUSION
The distribution of HIV subtypes in Dehong is diverse and complex. PDR was moderately prevalent (12.4%) between 2020 and 2023. Evidence of transmission of CRF01_AE strains carrying K103N and V179T mutations was found. Routine surveillance of PDR and the strengthening of control measures are essential to limit the spread of drug-resistance HIV strains.
Humans
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HIV Infections/virology*
;
China/epidemiology*
;
Drug Resistance, Viral
;
Male
;
Adult
;
Female
;
Middle Aged
;
HIV-1/genetics*
;
Anti-HIV Agents/therapeutic use*
;
Myanmar/epidemiology*
;
Young Adult
;
Prevalence
;
Adolescent
;
Mutation


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