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1.
Inflamm Res ; 73(8): 1311-1332, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38839628

RESUMEN

BACKGROUND: Regulatory T cells (Tregs) play vital roles in controlling immune reactions and maintaining immune tolerance in the body. The targeted destruction of epidermal melanocytes by activated CD8+T cells is a key event in the development of vitiligo. However, Tregs may exert immunosuppressive effects on CD8+T cells, which could be beneficial in treating vitiligo. METHODS: A comprehensive search of PubMed and Web of Science was conducted to gather information on Tregs and vitiligo. RESULTS: In vitiligo, there is a decrease in Treg numbers and impaired Treg functions, along with potential damage to Treg-related signaling pathways. Increasing Treg numbers and enhancing Treg function could lead to immunosuppressive effects on CD8+T cells. Recent research progress on Tregs in vitiligo has been summarized, highlighting various Treg-related therapies being investigated for clinical use. The current status of Treg-related therapeutic strategies and potential future directions for vitiligo treatment are also discussed. CONCLUSIONS: A deeper understanding of Tregs will be crucial for advancing Treg-related drug discovery and treatment development in vitiligo.


Asunto(s)
Linfocitos T Reguladores , Vitíligo , Vitíligo/inmunología , Vitíligo/terapia , Humanos , Linfocitos T Reguladores/inmunología , Animales , Linfocitos T CD8-positivos/inmunología
2.
BMC Plant Biol ; 23(1): 456, 2023 Sep 29.
Artículo en Inglés | MEDLINE | ID: mdl-37770861

RESUMEN

BACKGROUND: N6-methyladenosine (m6A) modification is the most abundant type of RNA modification in eukaryotic cells, playing pivotal roles in multiple plant growth and development processes. Yet the potential role of m6A in conferring the trait of male sterility in plants remains unknown. RESULTS: In this study, we performed RNA-sequencing (RNA-Seq) and m6A-sequencing (m6A-Seq) of RNAs obtained from the anther tissue of two wolfberry lines: 'Ningqi No.1' (LB1) and its natural male sterile mutant 'Ningqi No.5' (LB5). Based on the newly assembled transcriptome, we established transcriptome-wide m6A maps for LB1 and LB5 at the single nucleus pollen stage. We found that the gene XLOC_021201, a homolog of m6A eraser-related gene ALKBH10 in Arabidopsis thaliana, was significantly differentially expressed between LB1 and LB5. We also identified 1642 and 563 m6A-modified genes with hypermethylated and hypomethylated patterns, respectively, in LB1 compared with LB5. We found the hypermethylated genes significantly enriched in biological processes related to energy metabolism and lipid metabolism, while hypomethylation genes were mainly linked to cell cycle process, gametophyte development, and reproductive process. Among these 2205 differentially m6A methylated genes, 13.74% (303 of 2205) were differentially expressed in LB1 vis-à-vis LB5. CONCLUSIONS: This study constructs the first m6A transcriptome map of wolfberry and establishes an association between m6A and the trait of male sterility in wolfberry.


Asunto(s)
Infertilidad Masculina , Lycium , Masculino , Humanos , Perfilación de la Expresión Génica , Lycium/genética , Transcriptoma , ARN , Metilación de ADN/genética , Infertilidad Masculina/genética
3.
Exp Dermatol ; 32(4): 457-468, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36541112

RESUMEN

CD8+ T cells in the lesioned site play a crucial role in the pathogenesis of vitiligo. The chemokine CXCL10 secreted by keratinocytes regulates the migration of CD8+ T cells into the skin. In our previous study, we found that DCUN1D1 expression in vitiligo lesions positively correlates with Cxcl10 expression. In this study, the regulatory effect of DCUN1D1 on CXCL10 and cell function was investigated. DCUN1D1 protein expression was significantly higher in the skin tissue from vitiligo lesions compared with samples from healthy controls. High expression of DCUN1D1 in keratinocytes caused local hair depigmentation in mice, reduced melanin content, high infiltration of CD8+ T cells and increased CXCL10 expression. This suggested that DCUN1D1 may regulate CD8+ T-cell infiltration and depigmentation through CXCL10. Inhibition of DCUN1D1 expression in HaCaT cells abolished the IFN-γ-induced upregulation of p-JAK1, p-STAT1 and CXCL10, suppressed the H2 O2 -induced ROS generation and apoptosis, and upregulated tyrosinase expression in melanocytes. Collectively, these results show that DCUN1D1 is an important regulator of CXCL10 and may be a new target for the treatment of vitiligo.


Asunto(s)
Quimiocina CXCL10 , Péptidos y Proteínas de Señalización Intracelular , Vitíligo , Animales , Ratones , Linfocitos T CD8-positivos/metabolismo , Quimiocina CXCL10/metabolismo , Melanocitos/metabolismo , Piel/metabolismo , Vitíligo/metabolismo , Péptidos y Proteínas de Señalización Intracelular/metabolismo
4.
Exp Dermatol ; 32(6): 777-786, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-36779692

RESUMEN

Tranexamic acid (TXA) is a promising therapeutic agent in melasma that can act on multiple pathophysiologic mechanisms of melasma. However, it is unclear whether TXA affects melanin in keratinocytes. To explore the effect of TXA on melanocores in keratinocytes. The melanocore-incorporated keratinocytes were constructed by co-incubating normal human epidermal keratinocytes (NHEK) with melanocores. After being treated with TXA, autophagy- and melanin-related protein expressions were detected. Then, transcriptome sequencing was used to compare the genetic changes in melanocore-incorporated keratinocytes before and after TXA treatment and further verified the differentially expressed genes. At the same time, the distribution of melanocores in human keratinocytes was observed by transmission electron microscopy. We found that TXA does not promote melanin degradation in primary keratinocytes by inducing autophagy. Protein transport and intracellular protein transport-related genes were enriched after TXA treatment, and Rab5b was significantly upregulated. Transmission electron microscopy showed that the percentage of melanocores distributed in clusters increased after treatment with TXA, which was reduced after Rab5b silencing. In addition, results suggested that melanocores could colocalize with Rab5b and lysosome-associated membrane protein1 (LAMP1). Our study found that Rab5b may be involved in the melanocore distribution in keratinocytes. TXA may promote the clustering distribution of endocytic melanocores through upregulation of Rab5b, representing a potential mechanism of TXA treatment against melasma.


Asunto(s)
Melanosis , Ácido Tranexámico , Humanos , Ácido Tranexámico/farmacología , Ácido Tranexámico/metabolismo , Ácido Tranexámico/uso terapéutico , Melaninas/metabolismo , Regulación hacia Arriba , Queratinocitos/metabolismo , Melanosis/metabolismo
5.
Eur J Clin Microbiol Infect Dis ; 42(10): 1251-1262, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37702955

RESUMEN

BACKGROUND: The actual positive rate of interferon gamma release assays (IGRAs) in patients with nontuberculous mycobacteria (NTM) infections remains unclear. This review and meta-analysis present the prevalence of positive IGRAs (T-SPOT.TB and QuantiFERON [QFT] tests) among patients infected with NTM isolates (with or without ESAT-6/CFP-10). METHODS: Several databases, including PubMed, Scopus, Embase, and Web of Science were searched (until June 18th, 2022). Studies that had the following data were included: (1) results of T-SPOT.TB, QuantiFERON (QFT) test, or both, (2) NTM species, and (3) NTM diseases, or NTM colonization. The metaprop command that incorporates a Freeman-Tukey double arcsine transformation is used for pooling proportions. RESULTS: A total of 11 articles (n = 929) were deemed eligible for inclusion. Meta-analysis identified that the overall pooled positive and indeterminate rates of IGRA results in patients with NTM infections was 16% and 5%, respectively. Subgroup analysis showed that the positive rate of IGRAs in patients infected with NTM (without ESAT-6/CFP-10) was 7% (95% CI, 1%-18%), and 44% (95%CI, 22%-68%) in patients infected with NTM (with ESAT-6/CFP-10). In addition, the indeterminate rate of QFT (7%, 95% CI: 4%-12%) was higher than that of T-SPOT.TB (0%; 95% CI, 0%-2%) among the overall population with NTM infections. CONCLUSIONS: The IGRAs have a moderate positive rate for the diagnosis of NTM (expressing ESAT-6/CFP-10) infections, and a significant indeterminate rate is observed among the overall population infected with NTM. However, these findings should be interpreted with caution because of the high heterogeneity among studies.


Asunto(s)
Ensayos de Liberación de Interferón gamma , Infecciones por Mycobacterium no Tuberculosas , Humanos , Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Pacientes , Bases de Datos Factuales
6.
J Nanobiotechnology ; 21(1): 335, 2023 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-37726778

RESUMEN

Calcium (Ca2+) is essential for mitochondrial homeostasis and function coordination, particularly in cancer cells that metabolize frequently to sustain their growth. Photochemistry mediated calcium overload has attracted lots of attention as an effective way to achieve tumor suppression. Herein, we developed a photonanomedicine to synergistically induce calcium overload via cell-surface photochemistry and thus tumor suppression. Specifically, the photosensitizer, protoporphyrin IX (PpIX) was loaded onto upconversion nanoparticles (UCNP), which was subsequently modified by a polymer bearing photo-crosslinking cinnamate (CA) groups. The resulting nanoparticle was further functionalized by anti-CD20 aptamers (Apt), to give photonanomedicine. The interaction between CD20 receptors and anti-CD20 aptamers allowed photonanomedicine to accurately attach onto the Raji cell surface after an intravenous injection. Following the local application of a 980 nm NIR laser, the photonanomedicine was able to capture the NIR light and convert it into ultraviolet (UV) light. On one hand, the converted UV light led the crosslinking of cinnamate groups in photonanomedicine, further stimulating the clustering of CD20 receptors and causing Ca2+ influx. On the other hand, the UV light could simultaneously excited PpIX to generate reactive oxygen species (ROS) in situ to break down the integrity of cell membrane and lead to an influx of Ca2+. The synergistic Ca2+ overload mediated by photonanomedicine exhibited an enhanced and superior anti-tumor efficacy. We believe this photonanomedicine expands the toolbox to manipulate intracellular Ca2+ concentration and holds a great potential as an anti-tumor therapy.


Asunto(s)
Calcio , Luz , Fotoquímica , Membrana Celular , Cinamatos , Oligonucleótidos
7.
Mycopathologia ; 184(3): 433-439, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30976954

RESUMEN

PURPOSE: To characterize the clinical and mycological features of favus of scrotum due to Trichophyton rubrum. METHODS: A single-site prospective study was carried out in an outpatient dermatology clinic. Microscopic examination and fungal culture were done using skin scrapings. Scales on the scrotum were stained with PAS and visualized by microscopy, including in vivo reflectance confocal microscopy (RCM). Two strains were analyzed by RAPD typing. Scutular lesions were fixed for scanning electron microscopy (SEM) and transmission electron microscopy (TEM). RESULTS: Cultures of the scale from the scrotum and/or groin in all patients showed a growth of T. rubrum. T. rubrum strains from scrotum and groins in one patient were demonstrated as the same strain by RAPD typing. The average age of patients was 34.1 ± 12.78 years. The mean course was 8.2 ± 5.07 days. All the patients received only topical treatment for 2 weeks without recurrence. Direct smear, calcofluor-white staining and in vivo RCM study of the scrotal favus in patients showed a massive number of septate branching hyphae, while fewer septate hyphae in scales in the groin. Abundant hyphae were found only in the outer layer of the stratum corneum of the scrotum under SEM and TEM with intact bilateral cell walls, and normal nucleus, liposomes and reticulum. Few distorted hyphae structures, cell wall degeneration, degenerated cytoplasm and the autophagy phenomenon could be seen in scales from groin under TEM. CONCLUSIONS: Scrotal favus due to T. rubrum is still a true infection, which most often occurred in immunocompetent patients.


Asunto(s)
Escroto/microbiología , Escroto/patología , Tiña Favosa/diagnóstico , Tiña Favosa/patología , Trichophyton/aislamiento & purificación , Adolescente , Adulto , Antifúngicos/administración & dosificación , Humanos , Masculino , Técnicas Microbiológicas , Microscopía Confocal , Microscopía Electrónica de Rastreo , Microscopía Electrónica de Transmisión , Persona de Mediana Edad , Técnicas de Diagnóstico Molecular , Pacientes Ambulatorios , Estudios Prospectivos , Tiña Favosa/tratamiento farmacológico , Tiña Favosa/microbiología , Adulto Joven
8.
Biochem Biophys Res Commun ; 503(4): 2485-2492, 2018 09 18.
Artículo en Inglés | MEDLINE | ID: mdl-30208515

RESUMEN

Vitiligo, an acquired pigmentary disorder of the skin, is characterized by a chronic and progressive loss of melanocyte from the epidermis and follicular reservoir. Growth factor of surrounding cells impacted on melanocytes survival. In this study, lower level of IGF-1 in the lesion was found than that in the donor area of vitiligo patients. IGF-1 improved activation of Nrf2, and inhibited ROS generation and endoplasmic reticulum dilation in HaCaT. C57BL/6 mice were treated with 5% H2O2, and combined with 50 µg/kg of IGF-1 pre-treatment or not once every day for 50 consecutive days. After 50 days, IGF-1 obviously ameliorated depigmentation of mice skin and reduced hair follicle length, skin thickness and Tyrosinase induced by H2O2. Moreover, IGF-1 significantly suppressed CD8+ T cells infiltration in mice skin, inhibited the production of IL-2 and IFN-γ, and decreased the expression of CXCL10 and CXCR3. Thus, the results indicated that IGF-1 could resist oxidative damage to HaCaT, suppress CD8+ T cells infiltration and pro-inflammatory cytokines secretion, and suppresses the thinning of epidermal layer in vivo. It suggests that IGF-1 inhibits oxidative damage to HaCaT and immunosuppressive effects on CD8+ T cells proliferation and activation to resist depigmentation induced by H2O2. This disclosed its multiple roles in the vitiligo, and shed a light on developing the application potential for IGF-1 in vitiligo.


Asunto(s)
Factor I del Crecimiento Similar a la Insulina/farmacología , Vitíligo/tratamiento farmacológico , Animales , Linfocitos T CD8-positivos/inmunología , Línea Celular , Movimiento Celular/inmunología , Humanos , Peróxido de Hidrógeno/farmacología , Tolerancia Inmunológica/efectos de los fármacos , Factor I del Crecimiento Similar a la Insulina/fisiología , Activación de Linfocitos/inmunología , Ratones , Estrés Oxidativo/efectos de los fármacos , Pigmentación/efectos de los fármacos
9.
Pol J Microbiol ; 67(2): 223-226, 2018 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-30015461

RESUMEN

Transcriptome changes of biofilm-forming Staphylococcus epidermidis response to total alkaloids of Sophorea alopecuroides was observed. Bioinformatic analyses were further used to compare the differential gene expression between control and the treated samples. It was found that 282 genes were differentially expressed, with 92 up-regulated and 190 down-regulated. These involved down-regulation of the sulfur metabolism pathway. It was suggested that inhibitory effects on Staphylococcus epidermidis and its biofilm formation of the total alkaloids of S. alopecuroides was mainly due to the regulation of the sulfur metabolism pathways of S. epidermidis.


Asunto(s)
Alcaloides/farmacología , Antibacterianos/farmacología , Biopelículas/efectos de los fármacos , Sophora/química , Staphylococcus epidermidis/efectos de los fármacos , Transcriptoma , Proteínas Bacterianas/genética , Biología Computacional , Regulación Bacteriana de la Expresión Génica , Redes y Vías Metabólicas , Staphylococcus epidermidis/genética , Azufre/metabolismo
11.
Comput Struct Biotechnol J ; 23: 2623-2636, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39021583

RESUMEN

The rapid advancement of sequencing technologies has enabled the generation of vast datasets, allowing for the in-depth analysis of sequencing data. This analysis has facilitated the validation of novel pathogenesis hypotheses for understanding and treating diseases through ex vivo and in vivo experiments. Androgenetic alopecia (AGA), a common hair loss disorder, has been a key focus of investigators attempting to uncover its underlying mechanisms. Abnormal changes in mRNA, proteins, and metabolites have been identified in individuals with AGA, and future developments in sequencing technologies may reveal new biomarkers for AGA. By integrating multiple omics analysis datasets such as genomics, transcriptomics, proteomics, and metabolomics-along with clinical phenotype data-we can achieve a comprehensive understanding of the molecular underpinnings of AGA. This review summarizes the data-mining studies conducted on various omics analysis datasets as related to AGA that have been adopted to interpret the biological data obtained from different omics layers. We herein discuss the challenges of integrative omics analyses, and suggest that collaborative multi-omics studies can enhance the understanding of the complete pathomechanism(s) of AGA by focusing on the interaction networks comprising DNA, RNA, proteins, and metabolites.

12.
Ann N Y Acad Sci ; 1537(1): 155-167, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38922711

RESUMEN

This study aimed to investigate the protective effect of NAcM-OPT, a small molecule inhibitor of defective in cullin neddylation 1 (DCN1), on H2O2-induced oxidative damage in keratinocytes. Immortalized human keratinocytes (HaCaT cells) were treated with NAcM-OPT and exposed to oxidative stress. CCK-8 assays were used to measure cell viability. The mGFP-RFP-LC3 dual fluorescent autophagy indicator system was utilized to evaluate changes in autophagic flux. Western blotting was used to measure the expression of the autophagy-related proteins LC3 and Beclin 1. Keratinocytes were treated with the autophagy activator rapamycin, and HaCaT cell supernatant was added to PIG1 cells (immortalized human melanocytes), followed by evaluation of tyrosinase (TYR) expression via qRT-PCR. NAcM-OPT increased cell viability and cell proliferation. Furthermore, this molecule promoted autophagic flux through increased expression of autophagy-related proteins under H2O2-induced oxidative stress. Additionally, rapamycin increased the mRNA levels of TYR in PIG1 cells. Moreover, NAcM-OPT alleviated mitochondrial damage, restored mitochondrial function, and upregulated the expression of NFE2L2, HO1, NQO1, and GCLM. Importantly, NAcM-OPT also increased epidermal thickness, follicle length, and melanin synthesis under oxidative stress in vivo. These findings suggest that NAcM-OPT may be a promising small molecule antioxidant drug for the treatment of vitiligo.


Asunto(s)
Autofagia , Supervivencia Celular , Peróxido de Hidrógeno , Queratinocitos , Estrés Oxidativo , Humanos , Autofagia/efectos de los fármacos , Peróxido de Hidrógeno/farmacología , Peróxido de Hidrógeno/toxicidad , Queratinocitos/efectos de los fármacos , Queratinocitos/metabolismo , Estrés Oxidativo/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Células HaCaT
13.
Zhonghua Yi Xue Za Zhi ; 93(2): 123-7, 2013 Jan 08.
Artículo en Zh | MEDLINE | ID: mdl-23648349

RESUMEN

OBJECTIVE: To determine the impact on tyrosinase expression and export from endoplasmic reticulum by inhibition of 26S proteasome. METHODS: Western blot was used to detect 26S proteasome from 8 vitiligo patients and 4 healthy controls. Melanocytes were incubated with proteasome inhibitor (lactacystin) and further detected as follows: cell survival by MTT assay, proteasome activity with fluorescence, ultrastructure observation with electron microscope, co-localization of tyrosinase and calreticulin (endoplasmic reticulum marker) by confocal laser scanning microscopy and 26S proteasome and tyrosinase with Western blot. RESULTS: The 26S proteasome expression level from lesions of vitiligo (1.05 ± 0.40) was significantly lower than the donor sites (1.82 ± 0.88) and the healthy controls (1.88 ± 0.16) (P < 0.05). But no significant difference existed between the latter two groups (P > 0.05). Compared to the untreated group, a 12-h incubation of 10 µmol/L lactacystin showed inhibitory effects on melanocytes (0.999 ± 0.110 vs 1.372 ± 0.127, P < 0.05) and significantly decreased proteasome activity (0.234 ± 0.019 vs 1, P < 0.01). Expansion rate of endoplasmic reticulum in the lactacystin group (1.91 ± 0.17) was significantly higher than that of the untreated cells (1.17 ± 0.11) (P < 0.05). More tyrosinase co-localized with calreticulin in endoplasmic reticulum in lactacystin-treated cells was observed than that of the untreated group. Compared with the untreated group, significantly decreased levels of tyrosinase (146 ± 10 vs 269 ± 8, P < 0.01) and tyrosinase activity (0.159 ± 0.017 vs 0.221 ± 0.019, P < 0.01) were shown in the lactacystin group (P < 0.05). CONCLUSIONS: Significantly decrease of 26S proteasome is found in lesions of vitiligo patients. Inhibition of 26S proteasome may lead to expansion of endoplasmic reticulum of melanocytes, impact export of tyrosinase from melanocyte endoplasmic reticulum and expression of tyrosinase.


Asunto(s)
Acetilcisteína/análogos & derivados , Retículo Endoplásmico/metabolismo , Melanocitos/efectos de los fármacos , Melanocitos/metabolismo , Monofenol Monooxigenasa/metabolismo , Complejo de la Endopetidasa Proteasomal/metabolismo , Acetilcisteína/farmacología , Adulto , Estudios de Casos y Controles , Células Cultivadas , Inhibidores de Cisteína Proteinasa/farmacología , Femenino , Humanos , Masculino , Melanocitos/citología , Vitíligo/metabolismo , Vitíligo/patología , Adulto Joven
14.
Front Immunol ; 14: 1111547, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37205097

RESUMEN

Cytotoxic T lymphocyte has been a concern for the etiopathogenesis of alopecia areata (AA), some recent evidence suggests that the regulatory T (Treg) cell deficiency is also a contributing factor. In the lesional scalp of AA, Treg cells residing in the follicles are impaired, leading to dysregulated local immunity and hair follicle (HF) regeneration disorders. New strategies are emerging to modulate Treg cells' number and function for autoimmune diseases. There is much interest to boost Treg cells in AA patients to suppress the abnormal autoimmunity of HF and stimulate hair regeneration. With few satisfactory therapeutic regimens available for AA, Treg cell-based therapies could be the way forward. Specifically, CAR-Treg cells and novel formulations of low-dose IL-2 are the alternatives.


Asunto(s)
Alopecia Areata , Enfermedades Autoinmunes , Humanos , Alopecia Areata/terapia , Linfocitos T Reguladores , Autoinmunidad
15.
Front Public Health ; 11: 1228134, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37808998

RESUMEN

Objective: This systematic review aims to evaluate the diagnostic accuracy of cerebrospinal fluid (CSF) lipoarabinomannan (LAM) assays in detecting tuberculous meningitis (TBM). Methods: A systematic review search was conducted in PubMed and five other databases up to April 2023. Studies that evaluated the diagnostic accuracy of CSF LAM assays were included with either definitive or composite reference standard used as the preferred reference standard. The quality of the included studies was assessed using the QUADAS-2 tool. We performed a bivariate random-effects meta-analysis and calculated the summary diagnostic statistics. Results: A total of six studies, including a sample size of 999, were included in the final analysis. The pooled sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) of CSF LAM for diagnosing TBM were determined to be 0.44 (95% CI: 0.31-0.58), 0.89 (95% CI: 0.81-0.93), and 0.76 (95% CI: 0.73-0.80), respectively. Significant heterogeneity was observed in both sensitivity (Q = 73.82, p < 0.01; I2 = 86.45, 95%CI: 79.64-93.27) and specificity (Q = 95.34, p < 0.01; I2 = 89.51, 95% CI: 84.61-94.42). Regression analysis indicated that the study design (retrospective vs. prospective) was associated with the heterogeneity of pooled sensitivity and specificity (all p < 0.05). Conclusion: Although more prospective studies are required to validate the role of the CSF LAM assay, current evidence supports that the performance of the CSF LAM assay is unsatisfactory for the TBM diagnosis. Additionally, the optimization of the CSF LAM assay (e.g., improvements in CSF collection and preparation methods) should be considered to improve its performance.


Asunto(s)
Tuberculosis Meníngea , Humanos , Tuberculosis Meníngea/diagnóstico , Tuberculosis Meníngea/líquido cefalorraquídeo , Estudios Prospectivos , Estudios Retrospectivos , Lipopolisacáridos/líquido cefalorraquídeo
16.
Front Aging Neurosci ; 15: 1243588, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37693645

RESUMEN

Background: Previous cohort studies have found an association between Bacillus Calmette-Guérin (BCG) administration and incident dementia. In the systematic review and meta-analysis, we aimed to summarize the current evidence of the effect of BCG use on the risk of developing dementia. Methods: We searched six databases until 20 May 2023 for studies investigating the risk of dementia and BCG administration. Hazard ratios (HRs) and 95% confidence intervals (95% CIs) were pooled in the meta-analysis. Meta-regression, subgroup, and sensitivity analysis were conducted as well. Results: Of the 4,043 records initially evaluated, five articles were included for final analysis, with a total of 45,407 bladder cancer (BC) patients. All five studies were evaluated and rated as with high quality, and a low possibility of publication bias was indicated. A significant association between BCG and the incidence of dementia in BC patients was found in all five studies. Although a high heterogeneity (I2 = 84.5%, p < 0.001) was observed, the pooled HR was 0.55 (0.42-0.73), indicating that BCG exposure or treatment reduced the risk of incident dementia by 45%. Moreover, the sensitivity analysis showed good robustness of the overall effect with no serious publication bias. Conclusion: BCG administration is associated with a significantly lower risk of developing dementia. However, an epidemiological cohort is needed to establish a relationship between BCG use and incident dementia in the normal population. Once the relationship is confirmed, more people may benefit from the association. Systematic review registration: identifier: CRD42023428317.

17.
Front Pharmacol ; 14: 1331371, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38259285

RESUMEN

Objectives: Accumulating evidence are available on the efficacy of high-dose isoniazid (INH) for multidrug-resistant tuberculosis (MDR-TB) treatment. We aimed to perform a systematic review and meta-analysis to compare clinical efficacy and safety outcomes of high-dose INH- containing therapy against other regimes. Methods: We searched the following databases PubMed, Embase, Scopus, Web of Science, CINAHL, the Cochrane Library, and ClinicalTrials.gov. We considered and included any studies comparing treatment success, treatment unsuccess, or adverse events in patients with MDR-TB treated with high-dose INH (>300 mg/day or >5 mg/kg/day). Results: Of a total of 3,749 citations screened, 19 studies were included, accounting for 5,103 subjects, the risk of bias was low in all studies. The pooled treatment success, death, and adverse events of high-dose INH-containing therapy was 76.5% (95% CI: 70.9%-81.8%; I2: 92.03%), 7.1% (95% CI: 5.3%-9.1%; I2: 73.75%), and 61.1% (95% CI: 43.0%-77.8%; I2: 98.23%), respectively. The high-dose INH administration is associated with significantly higher treatment success (RR: 1.13, 95% CI: 1.04-1.22; p < 0.01) and a lower risk of death (RR: 0.45, 95% CI: 0.32-0.63; p < 0.01). However, in terms of other outcomes (such as adverse events, and culture conversion rate), no difference was observed between high-dose INH and other treatment options (all p > 0.05). In addition, no publication bias was observed. Conclusion: In MDR-TB patients, high-dose INH administration is associated with a favorable outcome and acceptable adverse-event profile. Systematic review registration: identifier CRD42023438080.

18.
Int J Mol Med ; 49(2)2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34878147

RESUMEN

Following the publication of the above article, an interested reader drew to the authors' attention that the Transwell cell migration assay data shown in Fig. 4A appeared to be partly overlapping with data presented for experiments performed under different experimental conditions in Figs. 4D and E. The authors independently examined the figure and realized that inadvertent errors had been made during the assembly of Fig. 4; furthermore, owing to the time that has elapsed since this paper was published, the authors no longer had access to the original data. Accordingly, to further verify the conclusions reported in the study, the authors repeated these experiments, and the results obtained were found to be consistent with the original findings. The new version of Fig. 4 is shown below. The authors are grateful to the Editor of International Journal of Molecular Medicine for allowing them the opportunity to publish this Corrigendum, and apologize to the readership for any inconvenience caused. [the original article was published in International Journal of Molecular Medicine 26: 57-65, 2010; DOI: 10.3892/ijmm_00000435].

19.
Zhonghua Yi Xue Za Zhi ; 90(16): 1126-30, 2010 Apr 27.
Artículo en Zh | MEDLINE | ID: mdl-20646433

RESUMEN

OBJECTIVE: To investigate the roles of InnVit (FBX011) gene in melanocytes by detecting the expression of InnVit gene in vitiligo and analyzing the impact of InnVit gene on morphology of endoplasmic reticulum (ER) and the tyrosinase export from ER. METHODS: The lesion tissues and the donor tissues were collected from 10 vitiligo patients to examine the InnVit gene expression by immunohistochemistry. Synthesized specific siRNA and constructed plasmid P3XF-P120 were separately transfected into cells for the silence and over-expression of InnVit gene with lipofectamine(TM) 2000. The untreated cells were used as control. Morphology of ER of cells from the above three groups was observed under electron microscope. Co-localization of tyrosinase and calreticulin was identified by confocal laser scanning microscopy. InnVit, tyrosinase and calreticulin were examined by Western blot. RESULTS: In vitiligo patients, the expression of InnVit gene in the lesions was markedly lower than that in the donor tissues. The normal morphology of ER was found in the untreated and the plasmid groups whereas inflated ER was shown in siRNA group. And the relative inflation rate in siRNA group (1.97 +/- 0.48) was higher than that in the untreated group (1.28 +/- 0.09) and plasmid group (1.24 +/- 0.13) (both P = 0.001). In the untreated and the plasmid groups, tyrosinase was expressed beyond the scope marked by ER marker protein calreticulin partly, but co-localized with calreticulin in ER in the siRNA group. Western blot showed that, contrast to the untreated group (0.320 +/- 0.020), a lower expression level of InnVit in the siRNA group (0.030 +/- 0.004, P = 0.001) and a higher expression of InnVit in the plasmid group were shown (0.710 +/- 0.040, P = 0.001). No significant difference about the expression level of calreticulin was observed among the three groups (P > 0.05). As compared with the untreated group (0.350 +/- 0.030), a higher tyrosinase level in the siRNA group (1.040 +/- 0.060, P = 0.001) and in the plasmid group (0.720 +/- 0.030, P = 0.001) was found. And the former was higher than the latter (P = 0.001). CONCLUSION: A lower expression of InnVit is observed in the lesion tissues than in the donor tissues from vitiligo patients. The InnVit gene can have an impact on the morphology of ER and tyrosinase export from ER. And it may further affect the function of melanocytes.


Asunto(s)
Retículo Endoplásmico/metabolismo , Proteínas F-Box/metabolismo , Monofenol Monooxigenasa/metabolismo , Proteína-Arginina N-Metiltransferasas/metabolismo , Vitíligo/genética , Adulto , Células Cultivadas , Retículo Endoplásmico/genética , Retículo Endoplásmico/patología , Femenino , Humanos , Masculino , Melanocitos/citología , Melanocitos/metabolismo , ARN Interferente Pequeño/genética , Piel/patología , Vitíligo/metabolismo , Adulto Joven
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