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Biomedical subjects

Xu Li

Publications and source records attributed to Xu Li.

At least 19 recordsLinked to original sources

Influence of Repeated-Sprint Bout Duration in Sprint Interval Training Intervention on Physical Performance Adaptations of Young Volleyball Players.

The objective of this study was to examine the effects of repeated-sprint training (RST) with varying bout durations on the physical fitness adaptations of young male volleyball players. Forty athletes were randomly allocated to one of three intervention groups performing RST with varying bout durations and similar repetition volumes, all executed at maximal effort. The 3-sec group (n = 10) completed two sets of 30 bouts, the 6-sec group (n = 10) performed two sets of 15 bouts, and the 9-sec group (n = 10) carried out two sets of 10 bouts, each adhering to a 1:3 work to rest ratio. An active control group (n = 10) engaged solely in regular volleyball training without the RST intervention. Physical fitness measures-including countermovement vertical jump (CMVJ), 10-m and 20-m linear sprints, T-test change-of-direction speed (T-CODS), reactive strength index (RSI), and the Wingate anaerobic power test-were assessed pre- and post-a 6-week training intervention (i.e., 18 sessions). All RST groups showed significant post-intervention improvements in physical fitness (main effect of time, p = 0.001), with greater adaptations compared with the control group and effect sizes ranging from small to very large. The 3-sec bout group demonstrated greater gains in CMVJ, 10-m and 20-m sprint performance, RSI, and peak power output compared with the 9-sec group (all, p < 0.05). Conversely, the 9-sec group exhibited superior adaptations in T-CODS and mean power output relative to the 3-sec group (all, p < 0.05). In conclusion, the 3-sec group experienced greater enhancements in explosive and sprint performances, while the 9-sec group showed superior gains in change of direction and mean power output. These findings indicate that manipulation of sprint-bout duration in RST can be used to optimize distinct performance adaptations in young volleyball players.

Humans↗

Integrated Multi-omics Profiling of 2,4-dinitrochlorobenzene (DNCB)-induced Atopic Dermatitis in Mice Reveals a Coordinated Network of Barrier Dysfunction, Immune Activation, and Metabolic Reprogramming.

Atopic dermatitis (AD) is caused by a combination of epidermal barrier defect and immune imbalance. However, the molecular networks between these structural abnormalities and metabolic variations are unclear. This study aim of this research was to examine the concurrent molecular alterations in skin barrier damage and metabolic disorders in an AD-like mouse model by a multi-omics strategy. A 2,4-dinitrochlorobenzene (DNCB)-induced AD-like mouse model was established and the skin tissues were examined through the combination of transcriptomic, quantitative proteomic, and metabolomic analyses. Cross-omics correlation and network analyses were performed to identify consistently abnormal molecular pathways and crucial regulatory molecules. DNCB treatment caused severe epidermal hyperplasia, and prominent infiltration of CD3&#x207a; T cells, F4/80&#x207a; macrophages, and mast cells. Transcriptomic and proteomic analysis indicated significant disruption in keratinocyte differentiation, extracellular matrix organization, and cornified envelope formation pathways. Combined analysis detected 171 molecules which were simultaneously altered at both mRNA and protein levels, and network analysis identified FLG2 and KRT6B as central barrier-related molecules. Pathway enrichment analysis consistently showed the participation of AMPK and PPAR signaling pathways. Metabolomic analysis also revealed coordinated changes in lipid and amino acid metabolism which were closely associated with cornified envelope-associated genes and collagen-modifying enzymes. These findings indicate a close relationship between barrier, immune and metabolic regulation in DNCB-induced dermatitis and provide a multi-omics resource for future mechanistic studies of atopic skin inflammation.

Animals↗

Bidirectional causal relationships between plasma proteins, neuroimaging metrics and risk of Alzheimer's disease.

BACKGROUND: Changes in neuroimaging metrics are among the first detectable pathophysiological alterations in Alzheimer's disease (AD). Proteins are closely linked to fluctuations in neuroimaging metrics. Therefore, the analysis of the proteomic signature associated with neuroimaging metrics holds significant promise for uncovering therapeutic targets that contribute to AD. METHODS: GWAS data concerning the Brain Imaging Data Structure (BIDs). The AD cohort comprised a total of 401,661 individuals diagnosed with AD, alongside 10,520 control participants. For a bidirectional MR analysis involving neuroimaging metrics, proteomics, and AD, the methods utilized included inverse variance weighted (IVW), MR Egger, weighted median, weighted mode, and the Wald ratio approaches. RESULTS: We identified 12 neuroimaging metrics that demonstrate significant relevance to AD (thickness of the left total hemisphere, volume of the right thalamus, and et al.). These metrics are structural magnetic resonance imaging (MRI) biomarkers that remain stable throughout the entire course of AD, from the preclinical stage through mild cognitive impairment (MCI) to dementia. Additionally, we found a substantial number of 1633 proteins that also show a noteworthy causal relationship with AD. Functional enrichment analysis indicated that these proteins were predominantly focused within various pathways linked to AD, encompassing those involved in the synaptic vesicle cycle, synaptic membranes, neurotransmitter release, and the activity of GABA receptors. In addition, our research indicates that the significant relationships observed between the identified proteins and AD are influenced by neuroimaging metrics. Notably, we found that these neuroimaging metrics play a crucial role in mediating a substantial 67% of the inverse relationship that exists between PTPRC and the phenotypic characteristics associated with AD. CONCLUSIONS: This study successfully establishes a connection between proteomic and neuroimaging metrics, as well as the AD that influence them. By creating this relationship, the research offers important information that aids in comprehending the intricate mechanisms involved in AD.

Alzheimer Disease↗

Metabolome-based genome-wide association study provides genetic insights into the andrographolide accumulation in Andrographis paniculata.

Andrographis paniculata is a distinctive medicinal plant that produces andrographolide-related metabolites, a class of diterpenoid compounds with potent anti-inflammatory activities. To elucidate the genetic mechanisms underlying the biosynthesis of these compounds, we perform comprehensive metabolic profiling and whole-genome resequencing on a natural population of A. paniculata. Population structure analysis reveals four distinct subgroups characterized by low intra-group genetic diversity but significant inter-group differentiation. Through metabolome-based genome-wide association study, we identify a significant locus associated with 14-deoxyandrographolide content. This locus harbors the candidate gene ApNB-ARC25 (CXN00004106), which encodes an NB-ARC domain-containing resistance protein. Functional characterization using virus-induced gene silencing shows that silencing of ApNB-ARC25 significantly reduces andrographolide accumulation and downregulates expressions of key genes in the andrographolide biosynthetic pathway. Heterologous overexpression of ApNB-ARC25 in rice not only improves resistance to blast disease but also enhances diterpenoid phytoalexin production. Our findings reveal that ApNB-ARC25 promotes diterpenoid accumulation and andrographolide biosynthesis by upregulating key genes involved in terpenoid backbone formation and diterpenoid synthesis. This work not only expands the functional understanding of the ApNB-ARC gene family but also provides a genetic resource for enhancing valuable compound accumulation in medicinal plants, offering important insights into the molecular regulation of medicinal metabolite biosynthesis.

Diterpenes↗

ALDOC and PGK1 coordinately induce glucose metabolism reprogramming and promote development of colorectal cancer.

Colorectal cancer (CRC) remains a significant health challenge globally, demanding a comprehensive understanding of its molecular underpinnings for effective management. In this study, we investigated the role of Aldolase C (ALDOC), a glycolytic enzyme, in CRC pathogenesis. Transcriptomic analysis of CRC tissues from The Cancer Genome Atlas (TCGA) revealed a substantial upregulation of ALDOC, correlating with adverse clinical outcomes. Immunohistochemical (IHC) staining of locally collected patient-derived tissues corroborated these findings, demonstrating elevated ALDOC expression in tumor tissues, particularly in advanced stages. Functional studies elucidated the regulatory role of ALDOC in CRC cell phenotypes. ALDOC knockdown significantly inhibited cell proliferation, induced apoptosis, arrested cell cycle progression, and suppressed cell migration in vitro. Moreover, in vivo studies using xenograft models confirmed that ALDOC knockdown attenuated tumor growth. Mechanistically, ALDOC was found to interact with hypoxia-inducible factor 1 alpha (HIF1A) and enhance its transcriptional activity on phosphoglycerate kinase 1 (PGK1), a key glycolytic enzyme. Dual-luciferase reporter assays and chromatin immunoprecipitation experiments validated the ALDOC-mediated transcriptional activation of PGK1. Further functional rescue experiments revealed a synergistic interplay between ALDOC and PGK1 in regulating CRC cell phenotypes. Additionally, ALDOC was implicated in promoting aerobic glycolysis in CRC cells, potentially through PGK1 regulation. Collectively, our findings unveil ALDOC as a critical regulator of CRC pathogenesis, offering insights into its potential as a therapeutic target and highlighting the ALDOC/PGK1 axis as a promising avenue for further investigation in CRC.

Humans↗

Comprehensive discovery and functional characterization of the noncanonical proteome.

The systematic identification and functional characterization of noncanonical translation products, such as novel peptides, will facilitate the understanding of the human genome and provide new insights into cell biology. Here, we constructed a high-coverage peptide sequencing reference library with 11,668,944 open reading frames and employed an ultrafiltration tandem mass spectrometry assay to identify novel peptides. Through these methods, we discovered 8945 previously unannotated peptides from normal gastric tissues, gastric cancer tissues and cell lines, nearly half of which were derived from noncoding RNAs. Moreover, our CRISPR screening revealed that 1161 peptides are involved in tumor cell proliferation. The presence and physiological function of a subset of these peptides, selected based on screening scores, amino acid length, and various indicators, were verified through Flag-knockin and multiple other methods. To further characterize the potential regulatory mechanisms involved, we constructed a framework based on artificial intelligence structure prediction and peptide&#x2012;protein interaction network analysis for the top 100 candidates and revealed that these cancer-related peptides have diverse subcellular locations and participate in organelle-specific processes. Further investigation verified the interacting partners of pep1-nc-OLMALINC, pep5-nc-TRHDE-AS1, pep-nc-ZNF436-AS1 and pep2-nc-AC027045.3, and the functions of these peptides in mitochondrial complex assembly, energy metabolism, and cholesterol metabolism, respectively. We showed that pep5-nc-TRHDE-AS1 and pep2-nc-AC027045.3 had substantial impacts on tumor growth in xenograft models. Furthermore, the dysregulation of these four peptides is closely correlated with clinical prognosis. Taken together, our study provides a comprehensive characterization of the noncanonical proteome, and highlights critical roles of these previously unannotated peptides in cancer biology.

Humans↗

Impact of effluent parameters and vancomycin concentration on vancomycin resistant Escherichia coli and its host specific bacteriophage lytic activity in hospital effluent.

Vancomycin resistance in bacteria has been classified under high priority category by World Health Organization (WHO) and its presence in hospital effluent is reported to be increasing owing to excess antibiotics use. Among various strategies, bacteriophage has been recently considered as a promising biological agent for combating such antimicrobial resistant bacteria (ARB). However, the influence of effluent's properties on phage-ARB interaction in actual hospital effluent is not completely understood. The present works intends to study this influence of hospital effluent and its parameters on the interaction between vancomycin resistant E. coli (VRE) and its host specific bacteriophage. The isolated VRE was identified by 16S rRNA sequencing, matrix-assisted laser desorption/ionization-time of flight (MALDI - TOF) and whole genome sequencing. The infectivity of phage onto host bacteria was investigated using electron microscopic techniques, dynamic light scattering (DLS), spectrofluorophotometer and confirmed using double agar overlay method. The monovalency and polyvalency of isolated phage against various bacterial species were determined. The phage morphology was identical to T7 phage belonging to Podoviridae. The phage lysis was maximum at pH 7 (90.2%), 37&#xa0;&#xb0;C (91.6%) and vancomycin concentration of 50&#xa0;&#x3bc;g/mL in both synthetic media (89.13%) and effluent (100%). At a maximum vancomycin concentration of 100&#xa0;&#x3bc;g/mL, decrease in Ca, K, Mg and P (up to 19.70, 14.18, 28, and 15.82% respectively) concentration in effluent was observed due to phage infectivity when compared to control. The whole genome sequencing was performed and the bioinformatics analysis presented the role of mdfA gene encoding the efflux pump in causing vancomycin resistance in E. coli. It also depicted the presence of multiple genes responsible for mercury, cobalt, zinc and cadmium resistance in VRE. These results clearly indicate that bacteriophage mediated combating of VRE is possible in actual hospital effluent and can be used as one of the treatment methods.

Vancomycin↗

The effects of histone deacetylase inhibitors on the induction of differentiation in chondrosarcoma cells.

PURPOSE: Histologically, chondrosarcomas represent the degree of chondrogenic differentiation, which is associated with the prognosis of the disease. Histone acetylation and deacetylation play key roles in the regulation of chondrocytic differentiation. Here, we describe the antitumor effects of histone deacetylase (HDAC) inhibitors as differentiating reagents on chondrosarcomas. EXPERIMENTAL DESIGN: We examined the effects of a HDAC inhibitor, depsipeptide, on the growth of chondrosarcoma cell lines. We also investigated the modulation of the expression levels of extracellular matrix genes and the induction of phenotypic change in chondrosarcoma cells treated with depsipeptide. Finally, we examined the antitumor effect of depsipeptide on chondrosarcoma in vivo. RESULTS: Depsipeptide inhibited the growth of chondrosarcoma cells by inducing cell cycle arrest and/or apoptosis. HDAC inhibitors increased the expression of the alpha1 chain of type II collagen (COL2A1) gene due to the enhanced histone acetylation in the promoter and enhancer. Depsipeptide also up-regulated the expressions of aggrecan and the alpha2 chain of type XI collagen (COL11A2) mRNA in a dose-dependent manner. Moreover, long-term treatment with a low dose of depsipeptide resulted in the induction of differentiation into hypertrophic phenotype, as shown by the increment of the alpha1 chain of type X collagen (COL10A1) expression in chondrosarcoma cells. In vivo studies and histologic analyses confirmed that depsipeptide significantly inhibited tumor growth and induced differentiation into the hypertrophic and mineralized state in chondrosarcoma cells. CONCLUSIONS: These results strongly suggest that HDAC inhibitors may be promising reagents for use as a differentiating chemotherapy against chondrosarcomas.

Apoptosis↗

Crystal structures of E. coli laccase CueO at different copper concentrations.

CueO protein is a hypothetical bacterial laccase and a good laccase candidate for large scale industrial application. Four CueO crystal structures were determined at different copper concentrations. Low copper occupancy in apo-CueO and slow copper reconstitution process in CueO with exogenous copper were demonstrated. These observations well explain the copper dependence of CueO oxidase activity. Structural comparison between CueO and other three fungal laccase proteins indicates that Glu106 in CueO constitutes the primary counter-work for reconstitution of the trinuclear copper site. Mutation of Glu106 to a Phe enhanced CueO oxidation activity and supported this hypothesis. In addition, an extra alpha-helix from Leu351 to Gly378 covers substrate biding pocket of CueO and might compromises the electron transfer from substrate to type I copper.

Amino Acid Sequence↗

Degenerated primer design to amplify the heavy chain variable region from immunoglobulin cDNA.

BACKGROUND: The amplification of variable regions of immunoglobulins has become a major challenge in the cloning of antibody genes, whether from hybridoma cell lines or splenic B cells. Using conventional protocols, the heavy-chain variable region genes often are not amplified successfully from the hybridoma cell lines. RESULTS: A novel method was developed to design the degenerated primer of immunoglobulin cDNA and to amplify cDNA ends rapidly. Polymerase chain reaction protocols were performed to recognize the VH gene from the hybridoma cell line. The most highly conserved region in the middle of the VH regions of the Ig cDNA was identified, and a degenerated 5'primer was designed, using our algorithms. The VH gene was amplified by both the 3'RACE and 5'RACE. The VH sequence of CSA cells was 399 bp. CONCLUSION: The new protocol rescued the amplifications of the VH gene that had failed under conventional protocols. In addition, there was a notable increase in amplification specificity. Moreover, the algorithm improved the primer design efficiency and was shown to be useful both for building VH and VL gene libraries and for the cloning of unknown genes in gene families.

Cell Line↗

Purification, crystallization and preliminary crystallographic studies on 2-dehydro-3-deoxygalactarate aldolase from Leptospira interrogans.

2-Dehydro-3-deoxygalactarate (DDG) aldolase is a member of the class II aldolase family and plays an important role in the pyruvate-metabolism pathway, catalyzing the reversible aldol cleavage of DDG to pyruvate and tartronic semialdehyde. As it is a potential novel antibiotic target, it is necessary to elucidate the catalytic mechanism of DDG aldolase. To determine the crystal structure, crystals of DDG aldolase from Leptospira interrogans were obtained by the hanging-drop vapour-diffusion method. The crystals diffracted to 2.2 A resolution using a Cu K alpha rotating-anode X-ray source. The crystal belonged to space group C2, with unit-cell parameters a = 293.5, b = 125.6, c = 87.6 A, beta = 100.9 degrees. The V(M) is calculated to be 2.4 A3 Da(-1), assuming there to be 12 protein molecules in the asymmetric unit.

Aldehyde-Lyases↗

Angiotensin II and Aldosterone stimulating NF-kappaB and AP-1 activation in hepatic fibrosis of rat.

BACKGROUND/AIMS: Intrahepatic renin-angiotensin-aldosterone system (RAAS) plays a key role in the fibrogenesis of liver. However, the signal transduction mechanism underlying effects of Angiotensin II (Ang II) and Aldosterone (Aldo) on Nuclear Factor-kappaB (NF-kappaB) and active protein-1 (AP-1) pathway in hepatic fibrogenesis remains to be fully elucidated. The present study aims to investigate the signal transduction mechanism underlying effects of Ang II and Aldo on NF-kappaB and AP-1 pathway during hepatic fibrogenesis. METHODS: To assess the effect of AECI and Angiotensin II type 1 receptor (AT-1 receptor) blocker on NF-kappaB activity in liver, a model of fibrosis was performed in rat. In vitro, hepatic stellate cells (HSCs)-T6 cells were preincubated for 1 h or not with U0126, a specific inhibitor of extracellular signal regulated kinase (ERK), irbesartan, and N-acetylcysteine prior to exposure to Ang II or Aldo for the indicated times. DNA binding activity of NF-kappaB and AP-1 were analyzed by Electrophoretic mobility shift assay (EMSA). Western blot was used to detect expression of IkappaBalpha and Phospho-P42/44. RT-PCR was used to detect the expressions of tumor necrosis factor alpha (TNFalpha) mRNA and alpha1 (I) procollagen mRNA. RESULTS: AECI and AT-1 receptor blocker exert anti-fibrosis effect through inhibiting NF-kappaB activation in liver. Ang II and Aldo increase HSCs NF-kappaB activity and NF-kappaB target gene-TNFalpha expression by inhibiting IkappaBalpha expression in a redox-sensitive manner. Ang II and Aldo also markedly increase HSCs AP-1 activity and AP-1 target gene-alpha1 (I) procollagen mRNA expression via ERK1/2 pathway in a redox-sensitive manner. CONCLUSIONS: These results show that stimulation of NF-kappaB and AP-1 pathway mediate hepatic fibrogenesis induced by intrahepatic RAAS.

Active Transport, Cell Nucleus↗

[Comparison of curative effects of sympathectomy at different segments on palmar hyperhidrosis].

OBJECTIVE: To compare the curative effects of sympathectomy at different segments on palmar hyperhidrosis. METHODS: Four hundred patients with palmar hyperhidrosis, 191 males and 209 females, aged 21.9 +/- 3.4 (10 - 53), underwent bilateral sympathectomy However, bilateral sympathectomy was forced to be given up and replaced by unilateral sympathectomy in 2 patients because of severe pleural adhesion The 398 patients on which bilateral sympathectomy was successfully performed were randomly divided into 3 groups: Group A (n = 207) undergoing T2-4 sympathectomy, Group B (n = 131) undergoing T3 sympathectomy, and Group C (n = 60) undergoing T3-4 sympathectomy. The curative effects were compared. RESULTS: Operation was successfully performed on all patients and their palmar hyperhidrosis was completely alleviated after operation. No surgery-related post-operative complication occurred. The compensatory hyperhidrosis (CH) rate of Group B was 5.3%, not significantly different from that of Group C (6.7%, P > 0.05). The CH rate of the combined group, Group B + C was 5.8%, significantly lower than that of Group A (28.0%, P < 0.01). CONCLUSION: Safe and mini-invasive, T3 or T3-4 sympathectomy effectively reduce the development of CH and improves the patients' quality of life post-operatively.

Adolescent↗

[Study on the relationship between endocrine hormone and prognosis in critically ill patients].

OBJECTIVE: To investigate the profile and significance of changes in thyroid function and cortisol in critically ill patients. METHODS: Chemiluminescent microparticle immunoassay (CMIA) was used to measure the serum thyroid hormone, thyroid stimulating hormone and cortisol levels in 51 patients at the first day and in the 45 patients still alive at the third day after hospitalized in ICU. In the 45 patients, 17 cases were complicated with multiple organ dysfunction syndrome (MODS) and 28 cases were not. The age, blood glucose levels and APACHE II scores were also recorded at the first day. RESULTS: In the 45 patients, serum FT(3) decreased in 41 patients (91%), cortisol increased in 33 patients (73%), especially in the first 24 hours. Compared with non-MODS group, serum FT(3), FT(4) and cortisol levels changed significantly in MODS group. Serum FT(4) reduced apparently in 6 dead patients. Serum FT(3) level was negatively correlated with APACHE II, and cortisol level was positively correlated with APACHE II. CONCLUSIONS: Thyroid hormone and cortisol were apparently abnormal and correlated with APACHE II score, especially in patients with MODS. Serum FT(4) might serve as an index to judge the prognosis of the patients.

APACHE↗

Modeling low-coherence enhanced backscattering using Monte Carlo simulation.

Constructive interference between coherent waves traveling time-reversed paths in a random medium gives rise to the enhancement of light scattering observed in directions close to backscattering. This phenomenon is known as enhanced backscattering (EBS). According to diffusion theory, the angular width of an EBS cone is proportional to the ratio of the wavelength of light lambda to the transport mean-free-path length l(s)* of a random medium. In biological media a large l(s)* approximately 0.5-2 mm >> lambda results in an extremely small (approximately 0.001 degrees ) angular width of the EBS cone, making the experimental observation of such narrow peaks difficult. Recently, the feasibility of observing EBS under low spatial coherence illumination (spatial coherence length Lsc << l(s)*) was demonstrated. Low spatial coherence behaves as a spatial filter rejecting longer path lengths and thus resulting in an increase of more than 100 times in the angular width of low coherence EBS (LEBS) cones. However, a conventional diffusion approximation-based model of EBS has not been able to explain such a dramatic increase in LEBS width. We present a photon random walk model of LEBS by using Monte Carlo simulation to elucidate the mechanism accounting for the unprecedented broadening of the LEBS peaks. Typically, the exit angles of the scattered photons are not considered in modeling EBS in the diffusion regime. We show that small exit angles are highly sensitive to low-order scattering, which is crucial for accurate modeling of LEBS. Our results show that the predictions of the model are in excellent agreement with the experimental data.

Animals↗

Expression and localization of tumor necrosis factor receptor 1 protein in the chorionic villi in early normal and spontaneous abortion.

BACKGROUND: Increasing tumor necrosis factor alpha (TNFalpha) expression is found to be positively associated with spontaneous abortion. TNFalpha acts through the binding of two types of transmembrane receptors called TNFR1 and TNFR2. Here we compare membrane TNFR1 (mTNFR1) protein expression on chorionic villi in women with spontaneous abortion (SA) and viable pregnancy. METHODS: In a prospective study, 31 women with SA and 30 with a viable pregnancy were studied. Chorionic villous membrane TNFR1 was detected by confocal laser scanning microscopy and immunohistochemistry. RESULTS: The mTNFR1 protein is expressed in villous stromal, vessel endothelial, syncytiotrophoblast, and cytotrophoblast cells in early pregnancy. The intensity of mTNFR1 fluorescence (mean+/-S.D.) in villous stromal cells was higher in the abortion groups than in the control group (35.99+/-6.35 versus 32.64+/-5.01; p<0.05). In the abortion groups, villous cytotrophoblast cells were intensely positive for mTNFR1, whereas mTNFR1 staining of vessel endothelial and syncytiotrophoblast cells was significantly lower (p<0.001). CONCLUSION: Abundant mTNFR1 expression in the cytotrophoblast cells in women with SA may mediate TNFalpha to induce programmed cell death in the mTNFR1-expressing cytotrophoblasts to limit their growth. The over-expressing mTNFR1 in villous stromal cells, mediating TNFalpha effects, may cause pathological changes or tissue damage in chorionic villi locally in nonviable pregnancies.

Abortion, Spontaneous↗

Ultrasonic interventional analgesia in pancreatic carcinoma with chemical destruction of celiac ganglion.

AIM: To detect the therapeutic effects of chemical destruction of celiac ganglion in patients with pancreatic carcinoma with intractable pain. METHODS: Ninety-seven cases with advanced pancreatic carcinoma received chemical destruction of celiac ganglion-5 mL pure alcohol injection around celiac artery under ultrasonic guidance. The changes of visual analogue scale (VAS), serum substance P (Sub P), beta-endopeptide (beta-EP) and T-lymphocyte subtypes level were compared between pre- and post-therapy. RESULTS: Successful rate of puncture was 98.7%, with one failure. No serious complications such as traumatic pancreatitis, pancreatic fistula, abdominal cavity hemorrhage or peritoneal infection occurred. VAS, serum Sub P and beta-EP level significantly changed after treatment (8.0+/-2.3 vs 4.6+/-2.1, 254.1+/-96.7 vs 182.4+/-77.6, 3.2+/-0.8 vs 8.8+/-2.1, P<0.01, P<0.05, P<0.01) with complete relief rate 54.2%, partial relief rate 21.9%, ineffective rate 12.5% and recurrent rate 10.7%. The T-lymphocyte subtypes level remarkably increased when compared with that of pre-therapy (46.7+/-3.7 vs 62.5+/-5.5, P<0.01). CONCLUSION: Our study suggests that chemical destruction of celiac ganglion under ultrasonic guidance is highly safe, and can evidently relieve cancer pain and improve the cellular immunity in patients with advanced pancreatic carcinoma.

Adult↗