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1.
Diabetes Obes Metab ; 26(3): 1057-1068, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38105342

RESUMEN

AIM: To evaluate the effect of noiiglutide as an adjunct to lifestyle intervention on the reduction in body weight and tolerability in obese Chinese adults without diabetes. MATERIALS AND METHODS: In this 24-week, randomized, double-blind, placebo-controlled phase 2 trial, 254 obese adults with a body mass index of 28.0-40.0 kg/m2 and without diabetes were enrolled. Participants were initially randomized in a 1:1:1 ratio to one of three dose levels: 0.12, 0.24, or 0.36 mg of the study treatment. Within each dose level, participants were further randomized in a 3:1 ratio to receive either subcutaneous injection of noiiglutide or a matching placebo. The primary endpoint was the change in body weight from baseline to week 24. RESULTS: Across all noiiglutide dosage levels, least squares mean reductions in body weight from baseline to week 24 ranged from 8.03 to 8.50 kg, compared with 3.65 kg in the placebo group (all p-values <.0001). In the noiiglutide groups (0.12, 0.24, 0.36 mg/day), a significantly higher proportion of participants achieved a weight loss ≥5% (68.8%, 60.0%, 73.0%) and ≥10% (37.5%, 36.9%, 39.7%), compared with the pooled placebo group (≥5%: 29.0%; ≥10%: 8.1%). Gastrointestinal adverse events, such as nausea, diarrhoea and vomiting, were more common in all noiiglutide groups (15.4%-30.2%, 18.8%-22.2%, 15.6%-18.5%) than in the pooled placebo group (8.1%, 6.5%, 0%). CONCLUSIONS: In obese Chinese adults without diabetes, once-daily subcutaneous noiiglutide significantly reduced body week at week 24 compared with placebo, and had a manageable safety profile, primarily involving gastrointestinal disorders.


Asunto(s)
Diabetes Mellitus Tipo 2 , Hipoglucemiantes , Adulto , Humanos , Hipoglucemiantes/uso terapéutico , Peso Corporal , Obesidad/complicaciones , Obesidad/tratamiento farmacológico , Obesidad/inducido químicamente , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Diabetes Mellitus Tipo 2/inducido químicamente , Inyecciones Subcutáneas , China/epidemiología , Método Doble Ciego , Resultado del Tratamiento
2.
Clin Infect Dis ; 76(3): e148-e154, 2023 02 08.
Artículo en Inglés | MEDLINE | ID: mdl-35870128

RESUMEN

BACKGROUND: Acceleration of negative respiratory conversion of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in patients with coronavirus disease 2019 (COVID-19) might reduce viral transmission. Nirmatrelvir/ritonavir is a new antiviral agent recently approved for treatment of COVID-19 that has the potential to facilitate negative conversion. METHODS: A cohort of hospitalized adult patients with mild-to-moderate COVID-19 who had a high risk for progression to severe disease were studied. These patients presented with COVID-19 symptoms between 5 March and 5 April 2022. The time from positive to negative upper respiratory reverse transcription-polymerase chain reaction (RT-PCR) conversion was assessed by Kaplan-Meier plots and Cox proportional hazards regression with the adjustment for patients' baseline demographic and clinical characteristics. RESULTS: There were 258 patients treated with nirmatrelvir/ritonavir and 224 nontreated patients who had mild-to-moderate COVID-19. The median (interquartile range) time for patients who converted from positive to negative RT-PCR was 10 days (7-12 days) in patients treated ≤5 days after symptom onset and 17 days (12-21 days) in nontreated patients. The proportions of patients with a negative conversion at day 15 were 89.7% and 42.0% in treated patients and nontreated patients, corresponding to a hazard ratio of 4.33 (95% confidence interval, 3.31-5.65). Adjustment for baseline differences between the groups had little effect on the association. Subgroup analysis on treated patients suggests that time to negative conversion did not vary with the patients' baseline characteristics. CONCLUSIONS: This cohort study of high-risk patients with mild-to-moderate COVID-19 found an association between nirmatrelvir/ritonavir treatment and accelerated negative RT-PCR respiratory SARS-CoV-2 conversion that might reduce the risk of viral shedding and disease transmission.


Asunto(s)
COVID-19 , Adulto , Humanos , SARS-CoV-2 , Ritonavir/uso terapéutico , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Estudios de Cohortes , Transcripción Reversa , Tratamiento Farmacológico de COVID-19 , Prueba de COVID-19
3.
Hum Genomics ; 16(1): 38, 2022 09 08.
Artículo en Inglés | MEDLINE | ID: mdl-36076300

RESUMEN

BACKGROUND: Thyroid eye disease (TED) is the most common orbital pathology that occurs in up to 50% of patients with Graves' disease. Herein, we aimed at discovering the possible hub genes and pathways involved in TED based on bioinformatical approaches. RESULTS: The GSE105149 and GSE58331 datasets were downloaded from the Gene Expression Omnibus (GEO) database and merged for identifying TED-associated modules by weighted gene coexpression network analysis (WGCNA) and local maximal quasi-clique merger (lmQCM) analysis. EdgeR was run to screen differentially expressed genes (DEGs). Transcription factor (TF), microRNA (miR) and drug prediction analyses were performed using ToppGene suite. Function enrichment analysis was used to investigate the biological function of genes. Protein-protein interaction (PPI) analysis was performed based on the intersection between the list of genes obtained by WGCNA, lmQCM and DEGs, and hub genes were identified using the MCODE plugin. Based on the overlap of 497 genes retrieved from the different approaches, a robust TED coexpression network was constructed and 11 genes (ATP6V1A, PTGES3, PSMD12, PSMA4, METAP2, DNAJA1, PSMA1, UBQLN1, CCT2, VBP1 and NAA50) were identified as hub genes. Key TFs regulating genes in the TED-associated coexpression network, including NFRKB, ZNF711, ZNF407 and MORC2, and miRs including hsa-miR-144, hsa-miR-3662, hsa-miR-12136 and hsa-miR-3646, were identified. Genes in the coexpression network were enriched in the biological processes including proteasomal protein catabolic process and proteasome-mediated ubiquitin-dependent protein catabolic process and the pathways of endocytosis and ubiquitin-mediated proteolysis. Drugs perturbing genes in the coexpression network were also predicted and included enzyme inhibitors, chlorodiphenyl and finasteride. CONCLUSIONS: For the first time, TED-associated coexpression network was constructed and key genes and their functions, as well as TFs, miRs and drugs, were predicted. The results of the present work may be relevant in the treatment and diagnosis of TED and may boost molecular studies regarding TED.


Asunto(s)
Oftalmopatía de Graves , MicroARNs , Proteínas Adaptadoras Transductoras de Señales/genética , Proteínas Adaptadoras Transductoras de Señales/metabolismo , Proteínas Relacionadas con la Autofagia/genética , Proteínas Relacionadas con la Autofagia/metabolismo , Biología Computacional/métodos , Proteínas de Unión al ADN/genética , Perfilación de la Expresión Génica/métodos , Redes Reguladoras de Genes , Oftalmopatía de Graves/genética , Humanos , MicroARNs/genética , MicroARNs/metabolismo , Factores de Transcripción/genética , Factores de Transcripción/metabolismo , Ubiquitinas/genética , Ubiquitinas/metabolismo
4.
FASEB J ; 36(9): e22508, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35983825

RESUMEN

Several diseases are caused or progress due to inflammation. In the past few years, accumulating evidence suggests that ghrelin, a gastric hormone of 28-amino acid residue length, exerts protective effects against inflammation by modulating the related pathways. This review focuses on ghrelin's anti-inflammatory and potential therapeutic effects in neurological, cardiovascular, respiratory, hepatic, gastrointestinal, and kidney disorders. Ghrelin significantly alleviates excessive inflammation and reduces damage to different target organs mainly by reducing the secretion of inflammatory cytokines, including interleukin-6 (IL-6), interleukin-1ß (IL-1ß), and tumor necrosis factor-α (TNF-α), and inhibiting the nuclear factor kappa-B (NF-κB) and NLRP3 inflammasome signaling pathways. Ghrelin also regulates inflammation and apoptosis through the p38 MAPK/c-Jun N-terminal kinase (JNK) signaling pathway; restores cerebral microvascular integrity, and attenuates vascular leakage. Ghrelin activates the phosphoInositide-3 kinase (PI3K)/protein kinase B (Akt) pathway and inhibits inflammatory responses in cardiovascular diseases and acute kidney injury. Some studies show that ghrelin exacerbates colonic and intestinal manifestations of colitis. Interestingly, some inflammatory states, such as non-alcoholic steatohepatitis, inflammatory bowel diseases, and chronic kidney disease, are often associated with high ghrelin levels. Thus, ghrelin may be a potential new therapeutic target for inflammation-related diseases.


Asunto(s)
Ghrelina , FN-kappa B , Citocinas/metabolismo , Ghrelina/farmacología , Humanos , Inflamación/metabolismo , FN-kappa B/metabolismo , Transducción de Señal
5.
J Clin Lab Anal ; 35(12): e24062, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34689373

RESUMEN

BACKGROUND: Previous studies found the dysbiosis of intestinal microbiota in diabetic kidney disease (DKD), especially the decreased SCFA-producing bacteria. We aimed to investigate the concentration of the stool and serum short-chain fatty acids (SCFAs), gut microbiota-derived metabolites, in individuals with DKD and reveal the correlations between SCFAs and renal function. METHODS: A total of 30 participants with DKD, 30 participants with type 2 diabetes mellitus (DM), and 30 normal controls (NC) in HwaMei Hospital were recruited from 1/1/2018 to 12/31/2019. Participants with DKD were divided into low estimated glomerular filtration rate (eGFR)(eGFR<60ml/min, n=14) and high eGFR (eGFR≥60ml/min, n=16) subgroups. Stool and serum were measured for SCFAs with gas chromatograph-mass spectrometry. RESULTS: The DKD group showed markedly lower levels of fecal acetate, propionate, and butyrate versus NC (p<0.001, p<0.001, p=0.018, respectively) [1027.32(784.21-1357.90)]vs[2064.59(1561.82-2637.44)]µg/g,[929.53(493.65-1344.26)]vs[1684.57(1110.54-2324.69)]µg/g,[851.39(409.57-1611.65)] vs[1440.74(1004.15-2594.73)]µg/g, respectively, and the lowest fecal total SCFAs concentration among the groups. DKD group also had a lower serum caproate concentration than that with diabetes (p=0.020)[0.57(0.47-0.61)]vs[0.65(0.53-0.79)]µmol/L. In the univariate regression analysis, fecal and serum acetate correlated with eGFR (OR=1.013, p=0.072; OR=1.017, p=0.032). The correlation between serum total SCFAs and eGFR showed statistical significance (OR=1.019, p=0.024) unadjusted and a borderline significance (OR=1.024, p=0.063) when adjusted for Hb and LDL. The decrease in serum acetate and total SCFAs were found of borderline significant difference in both subgroups (p=0.055, p=0.050). CONCLUSION: This study provides evidence that in individuals with DKD, serum and fecal SCFAs levels (fecal level in particular) were lowered, and there was a negative correlation between SCFAs and renal function.


Asunto(s)
Nefropatías Diabéticas/metabolismo , Ácidos Grasos Volátiles/metabolismo , Microbioma Gastrointestinal/fisiología , Adulto , Anciano , Estudios de Casos y Controles , Diabetes Mellitus Tipo 2/metabolismo , Diabetes Mellitus Tipo 2/microbiología , Nefropatías Diabéticas/microbiología , Ácidos Grasos Volátiles/análisis , Ácidos Grasos Volátiles/sangre , Heces/microbiología , Femenino , Cromatografía de Gases y Espectrometría de Masas , Humanos , Masculino , Persona de Mediana Edad
6.
FASEB J ; 33(11): 12515-12527, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31461386

RESUMEN

Diabetes mellitus (DM) affects bone metabolism and leads to osteoporosis; however, its pathogenetic mechanisms remain unknown. We found that high glucose (HG) conditions induced the production of reactive oxygen species (ROS) and the expression of proteins related to MAPKs [phosphorylated (p)-ERK, p-JNK, and p-p38], NF-κB (NF-κB, p-IκB, and IKK), and NACHT-LRR-PYD domains-containing protein 3 (NALP3) (NLRP3) [apoptosis-associated speck-like protein containing a caspase activation and recruitment domain (ASC), caspase-1, IL-18, IL-1ß, and NLRP3] in osteoclasts (OCs) in vitro. Further analysis showed that in HG-induced OCs, ROS is an upstream signal for MAPKs, NF-κB, and the NLRP3 inflammasome. Moreover, MAPKs mediated the activation of NF-κB and NLRP3, whereas NF-κB up-regulated the NLRP3 inflammasome response. Interestingly, HG inducement enhanced the bone resorption of OCs but inhibited their efferocytosis, whereas insulin and lipoxin A4 (4) treatment reversed this phenomenon. In streptozotocin-induced diabetic rats in vivo, the numbers and the bone-resorption capacity of OCs as well as the serum levels of TRACP-5b were significantly increased, and the expression of MAPK-, NF-κB-, and NLRP3 inflammasome-related proteins in the proximal tibia were also significantly elevated; however, treatment with insulin and LXA4 reversed this elevation. Together, these results demonstrated that the activation of ROS/MAPKs/NF-κB/NLRP3 and the inhibition of efferocytosis in OCs are the main causes of osteoporosis in DM.-An, Y., Zhang, H., Wang, C., Jiao, F., Xu, H., Wang, X., Luan, W., Ma, F., Ni, L., Tang, X., Liu, M., Guo, W., Yu, L. Activation of ROS/MAPKs/NF-κB/NLRP3 and inhibition of efferocytosis in osteoclast-mediated diabetic osteoporosis.


Asunto(s)
Complicaciones de la Diabetes/metabolismo , Diabetes Mellitus Experimental/metabolismo , Sistema de Señalización de MAP Quinasas , Osteoclastos/metabolismo , Osteoporosis/metabolismo , Animales , Complicaciones de la Diabetes/genética , Complicaciones de la Diabetes/patología , Diabetes Mellitus Experimental/genética , Diabetes Mellitus Experimental/patología , Quinasas MAP Reguladas por Señal Extracelular/genética , Quinasas MAP Reguladas por Señal Extracelular/metabolismo , Masculino , FN-kappa B/genética , FN-kappa B/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/genética , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Osteoclastos/patología , Osteoporosis/genética , Osteoporosis/patología , Ratas , Ratas Sprague-Dawley , Especies Reactivas de Oxígeno/metabolismo
7.
Biochim Biophys Acta Mol Cell Res ; 1865(8): 1034-1045, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29704532

RESUMEN

Oxidative stress and P53 contribute to the pathogenesis of diabetic kidney disease (DKD). Nuclear factor erythroid 2-related factor 2 (NRF2) is a master regulator of cellular antioxidant defense system, is negatively regulated by P53 and prevents DKD. Recent findings revealed an important role of mouse double minute 2 (MDM2) in protection against DKD. However, the mechanism remained unclear. We hypothesized that MDM2 enhances NRF2 antioxidant signaling in DKD given that MDM2 is a key negative regulator of P53. The MDM2 inhibitor nutlin3a elevated renal P53, inhibited NRF2 signaling and induced oxidative stress, inflammation, fibrosis, DKD-like renal pathology and albuminuria in the wild-type (WT) non-diabetic mice. These effects exhibited more prominently in nutlin3a-treated WT diabetic mice. Interestingly, nutlin3a failed to induce greater renal injuries in the Nrf2 knockout (KO) mice under both the diabetic and non-diabetic conditions, indicating that NRF2 predominantly mediates MDM2's action. On the contrary, P53 inhibition by pifithrin-α activated renal NRF2 signaling and the expression of Mdm2, and attenuated DKD in the WT diabetic mice, but not in the Nrf2 KO diabetic mice. In high glucose-treated mouse mesangial cells, P53 gene silencing completely abolished nutlin3a's inhibitory effect on NRF2 signaling. The present study demonstrates for the first time that MDM2 controls renal NRF2 antioxidant activity in DKD via inhibition of P53, providing MDM2 activation and P53 inhibition as novel strategies in the management of DKD.


Asunto(s)
Diabetes Mellitus Experimental/metabolismo , Nefropatías Diabéticas/metabolismo , Factor 2 Relacionado con NF-E2/metabolismo , Estrés Oxidativo , Proteínas Proto-Oncogénicas c-mdm2/metabolismo , Proteína p53 Supresora de Tumor/metabolismo , Animales , Células Cultivadas , Diabetes Mellitus Experimental/complicaciones , Diabetes Mellitus Experimental/genética , Diabetes Mellitus Experimental/patología , Nefropatías Diabéticas/genética , Nefropatías Diabéticas/patología , Nefropatías Diabéticas/prevención & control , Silenciador del Gen , Riñón/metabolismo , Riñón/patología , Masculino , Ratones Endogámicos C57BL , Ratones Noqueados , Factor 2 Relacionado con NF-E2/genética , Proteína p53 Supresora de Tumor/antagonistas & inhibidores , Proteína p53 Supresora de Tumor/genética
8.
Endocr J ; 66(11): 961-969, 2019 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-31270292

RESUMEN

Werner syndrome (WS) is a rare, adult-onset progeroid syndrome. Classic WS is caused by WRN mutation and partial atypical WS (AWS) is caused by LMNA mutation. A 19-year-old female patient with irregular menstruation and hyperglycemia was admitted. Physical examination revealed characteristic faces of progeria, graying and thinning of the hair scalp, thinner and atrophic skin over the hands and feet, as well as lipoatrophy of the extremities, undeveloped breasts at Tanner stage 3, and short stature. The patient also suffered from severe insulin-resistant diabetes mellitus, hyperlipidemia, fatty liver, and polycystic ovarian morphology. Possible WS was considered and both WRN and LMNA genes were analyzed. A novel missense mutation p.L140Q (c.419T>A) in the LMNA gene was identified and confirmed the diagnosis of AWS. Her father was a carrier of the same mutation. We carried out therapy for lowering blood glucose and lipid and improving insulin resistance, et al. The fasting glucose, postprandial glucose and triglyceride level was improved after treatment for 9 days. Literature review of AWS was performed to identify characteristics of the disease. Diabetes mellitus is one of the clinical manifestations of WS and attention must give to the differential diagnosis. Gene analysis is critical in the diagnosis of WS. According to the literature, classic and atypical WS differ in incidence, pathogenic gene, and clinical manifestations. Characteristic dermatological pathology may be significantly more important for the initial identification of AWS. Early detection, appropriate treatments, and regular follow-up may improve prognosis and survival of WS patients.


Asunto(s)
Diabetes Mellitus/metabolismo , Hipogonadismo/fisiopatología , Síndrome de Werner/fisiopatología , Diabetes Mellitus/etiología , Diabetes Mellitus/genética , Femenino , Humanos , Hipogonadismo/etiología , Hipogonadismo/genética , Hipogonadismo/metabolismo , Lamina Tipo A/genética , Síndrome de Werner/complicaciones , Síndrome de Werner/genética , Adulto Joven
9.
J Sep Sci ; 39(13): 2517-26, 2016 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27133960

RESUMEN

This study assessed the feasibility of gas chromatography with flame ionization detection fingerprinting combined with chemometrics for quality analysis of Atractylodes rhizome. We extracted essential oils from 20 Atractylodes lancea and Atractylodes koreana samples by hydrodistillation. The variation in extraction yields (1.33-4.06%) suggested that contents of the essential oils differed between species. The volatile components (atractylon, atractydin, and atractylenolide I, II, and III) were quantified by gas chromatography with flame ionization detection and confirmed by gas chromatography with mass spectrometry, and the results demonstrated that the number and content of volatile components differed between A. lancea and A. koreana. We then calculated the relative peak areas of common components and similarities of samples by comparing the chromatograms of A. lancea and A. koreana extracts. Also, we employed several chemometric techniques, including similarity analysis, hierarchical clustering analysis, principal component analysis, and partial least-squares discriminate analysis, to analyze the samples. Results were consistent across analytical methods and showed that samples could be separated according to species. Five volatile components in the essential oils were quantified to further validate the results of the multivariate statistical analysis. The method is simple, stable, accurate, and reproducible. Our results provide a foundation for quality control analysis of A. lancea and A. koreana.


Asunto(s)
Atractylodes/química , Aceites Volátiles/análisis , Cromatografía de Gases , Ionización de Llama
10.
J Sep Sci ; 39(24): 4773-4780, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27790838

RESUMEN

Atractylodes rhizome is a valuable traditional Chinese medicinal herb that comprises complex several species whose essential oils are the primary pharmacologically active component. Essential oils of Atractylodes lancea and Atractylodes koreana were extracted by hydrodistillation, and the yield was determined. The average yield of essential oil obtained from A. lancea (2.91%) was higher than that from A. koreana (2.42%). The volatile components of the essential oils were then identified by a gas chromatography with mass spectrometry method that demonstrated good precision. The method showed clear differences in the numbers and contents of volatile components between the two species. 41 and 45 volatile components were identified in A. lancea and A. koreana, respectively. Atractylon (48.68%) was the primary volatile component in A. lancea, while eudesma-4(14)-en-11-ol (11.81%) was major in A. koreana. However, the most significant difference between A. lancea and A. koreana was the major component of atractylon and atractydin. Principal component analysis was utilized to reveal the correlation between volatile components and species, and the analysis was used to successfully discriminate between A. lancea and A. koreana samples. These results suggest that different species of Atractylodes rhizome may yield essential oils that differ significantly in content and composition.


Asunto(s)
Atractylodes/química , Medicamentos Herbarios Chinos/análisis , Aceites Volátiles/análisis , Aceites de Plantas/química , Cromatografía de Gases y Espectrometría de Masas , Espectrometría de Masas , Rizoma/química
11.
Zhongguo Zhong Yao Za Zhi ; 41(15): 2768-2773, 2016 Aug.
Artículo en Zh | MEDLINE | ID: mdl-28914014

RESUMEN

Chinese medicinal materials (CMMs) are easily to be contaminated by all kinds of molds to produce various mycotoxins due to their internal factors and the external environmental conditions during the growth, harvesting, processing, and especially storage processes. This will not only affect the quality of CMMs, resulting in enormous financial loss, but also influence the safety and effectiveness of CMMs, posing potential threats to human health. With the increase in awareness of "traditional Chinese medicine health" idea, more and more attention has been paid on how to prevent and control these CMMs from being mouldy to guarantee their safety. Some physical and chemical techniques have been restricted for protecting CMMs due to their own disadvantages. As a green, safe and economic strategy for the preservation of CMMs, "couplet medicine" technique based on the principle of "protecting CMM with another CMM" has been developed: two kinds of CMMs are stored together and fight against each other to prevent mildew metamorphism, exhibiting no obvious changes in color, smell and quality. Nowadays, certain application results have been obtained for the "antagonistic storage" method based on the above mode and principle. In this paper, we would review and discuss the mechanism, practical application and the problems of "couplet medicine" technique, and provide scientific evidences for developing safe and effective tools to protect CMMs from being mouldy.


Asunto(s)
Contaminación de Medicamentos/prevención & control , Medicamentos Herbarios Chinos/normas , Preservación Biológica , Hongos , Medicina Tradicional China , Micotoxinas
12.
Zhong Yao Cai ; 38(3): 606-9, 2015 Mar.
Artículo en Zh | MEDLINE | ID: mdl-26495664

RESUMEN

OBJECTIVE: To optimize the extraction technology of total flavonoids from Albizia julibrissin flower by combining surfactant with ultrasonic technology. METHODS: Using Box-Behnken central composition design and response surface methodology, the effects of surfactant concentration, liquid-solid ratio and ultrasound time on the yield of total flavonoids were studied based on the extraction rate to determine the optimum extraction conditions of total flavonoids. RESULTS: Optimum conditions for extraction of Albizia julibrissin flower were as follows: mass percentage of 2. 5% SDS,15 times of 60% ethanol,ultrasonic time of 31 min. Under these conditions,the extraction rate of total flavonoids from Albizia julibrissin flower was 0. 853%. Using this technology, the extraction yield increased by 93. 0% as compared with that using ultrasonic technology alone. CONCLUSION: The optimum extraction technology can be used for extraction of total flavonoids from Albizia julibrissin flower for its simplicity and responsibility.


Asunto(s)
Albizzia/química , Flavonoides/aislamiento & purificación , Flores/química , Extractos Vegetales/química , Etanol , Tensoactivos , Ultrasonido
13.
Zhongguo Zhong Yao Za Zhi ; 40(7): 1223-9, 2015 Apr.
Artículo en Zh | MEDLINE | ID: mdl-26281536

RESUMEN

All kinds of traditional Chinese medicines (TCMs) differed from each other with different chemical components and properties. Owing to poor conditions and technologies, and the lack of scientific preservation, most TCMs will easily become mouldy during the processes of growth, harvest, handling, translation and especially storage, which will not only influence the quality, safety and efficacy of TCMs, but also cause serious waste and economic losses, and even do great harm to human health. The process of storage is closely related to the qualities of TCMs with many interference factors. Therefore, scientific preservation of TCM during storage is crucial to prevent them from being mouldy. This review analyzed the important harm of mouldy TCMs, summarized the internal and external factors of resulting in TCMs to become mouldy. Based on the above discussion, together with the characteristics and limitations of current TCM preservation techniques, we prospect novel, scientific and reasonable preservation techniques, expecting to provide references for scientific preservation of TCMs to avoid becoming mouldy and guarantee their qualities.


Asunto(s)
Contaminación de Medicamentos/prevención & control , Almacenaje de Medicamentos/métodos , Medicamentos Herbarios Chinos/química , Hongos/crecimiento & desarrollo , Plantas Medicinales/microbiología , Hongos/aislamiento & purificación , Plantas Medicinales/química
14.
Am J Physiol Endocrinol Metab ; 307(1): E14-23, 2014 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-24801392

RESUMEN

Diabetes-induced testicular cell death is due predominantly to oxidative stress. Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is an important transcription factor in controlling the antioxidative system and is inducible by sulforaphane (SFN). To test whether SFN prevents diabetes-induced testicular cell death, an insulin-defective stage of type 2 diabetes (IDS-T2DM) was induced in mice. This was accomplished by feeding them a high-fat diet (HFD) for 3 mo to induce insulin resistance and then giving one intraperitoneal injection of streptozotocin to induce hyperglycemia while age-matched control mice were fed a normal diet (ND). IDS-T2DM and ND-fed control mice were then further subdivided into those with or without 4-mo SFN treatment. IDS-T2DM induced significant increases in testicular cell death presumably through receptor and mitochondrial pathways, shown by increased ratio of Bax/Bcl2 expression and cleavage of caspase-3 and caspase-8 without significant change of endoplasmic reticulum stress. Diabetes also significantly increased testicular oxidative damage and inflammation. All of these diabetic effects were significantly prevented by SFN treatment with upregulated Nrf2 expression. These results suggest that IDS-T2DM induces testicular cell death presumably through caspase-8 activation and mitochondria-mediated cell death pathways and also by significantly downregulating testicular Nrf2 expression and function. SFN upregulates testicular Nrf2 expression and its target antioxidant expression, which was associated with significant protection of the testis from IDS-T2DM-induced germ cell death.


Asunto(s)
Apoptosis/efectos de los fármacos , Diabetes Mellitus Experimental/tratamiento farmacológico , Diabetes Mellitus Experimental/metabolismo , Isotiocianatos/administración & dosificación , Factor 2 Relacionado con NF-E2/metabolismo , Testículo/metabolismo , Testículo/patología , Animales , Diabetes Mellitus Experimental/inducido químicamente , Masculino , Ratones , Ratones Endogámicos C57BL , Oxidación-Reducción/efectos de los fármacos , Estrés Oxidativo/efectos de los fármacos , Sulfóxidos , Testículo/efectos de los fármacos , Resultado del Tratamiento , Regulación hacia Arriba/efectos de los fármacos
15.
Injury ; 55(2): 111203, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38043143

RESUMEN

Osteoporosis results from an imbalance in a highly balanced physiological process called bone remodeling, in which osteoclast-mediated bone resorption and osteoblast-mediated bone formation play important roles. Osteoimmunology is a newly discovered interdisciplinary research field that focuses on the relationship between bone and the immune system. Specifically, bone and the immune system interact through cytokines, immune cells secrete cytokines, and cytokines finely regulate bone metabolism by mediating the differentiation and activity of osteoclasts and osteoblasts. Therefore, understanding the influence of cytokines on bone metabolism is conducive for the development of novel targeted drugs against immune-related bone diseases. This review summarizes the pathophysiological functions of various common cytokines in bone and discusses the potential clinical value of multiple cytokines in immune-mediated bone diseases.


Asunto(s)
Resorción Ósea , Citocinas , Humanos , Citocinas/metabolismo , Huesos , Osteoclastos , Osteoblastos/metabolismo , Sistema Inmunológico/metabolismo , Remodelación Ósea
16.
Diabetes Metab Syndr Obes ; 17: 1957-1971, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38737387

RESUMEN

In recent years, obesity has become one of the major diseases that affect human health and consume human health resources, especially when it causes comorbidities such as hypertension, diabetes, cardiovascular disease and kidney disease. Many studies have demonstrated that obesity is associated with the development of chronic kidney disease and can exacerbate the progression of end-stage renal disease. This review described the mechanisms associated with the development of obesity-associated nephropathy and the current relevant therapeutic modalities, with the aim of finding new therapeutic targets for obesity-associated nephropathy. The mechanisms of obesity-induced renal injury include, in addition to the traditional alterations in renal hemodynamics, the involvement of various mechanisms such as macrophage infiltration in adipose tissue, alterations in adipokines (leptin and adiponectin), and ectopic deposition of lipids. At present, there is no "point-to-point" treatment for obesity-induced kidney injury. The renin-angiotensin-aldosterone system (RAAS) inhibitors, sodium-dependent glucose transporter 2 (SGLT-2) inhibitors and bariatric surgery described in this review can reduce urinary protein to varying degrees and delay the progression of kidney disease. In addition, recent studies on the therapeutic effects of intestinal flora on obesity may reduce the incidence of obesity-related kidney disease from the perspective of primary prevention. Both of these interventions have their own advantages and disadvantages, so the continuous search for the mechanism of obesity-induced related kidney disease will be extremely helpful for the future treatment of obesity-related kidney disease.

17.
J Prim Care Community Health ; 15: 21501319241255914, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38853426

RESUMEN

OBJECTIVE: This study was designed to perform a nuanced analysis of the multifaceted association between community residents' satisfaction and their perceived satisfaction concerning the visit duration at medical facilities, that could be harnessed to enhance and streamline the process of hierarchical diagnosis and treatment, thereby augmenting healthcare outcomes and patient experiences. METHODS: Respondents who had utilized services from medical institutions were invited to fill out questionnaires by scanning QR codes. Additionally, surveys also distributed questionnaires through WeChat groups of community residents in densely populated areas of the community, as well as WeChat groups for patients who had previously visited local hospitals. To balance differences between groups, propensity score matching was applied to analyze the contrast between residents satisfied and dissatisfied with their medical visits. After eliminating the interference of confounding factors, a comparative analysis was conducted on the relationship between resident satisfaction and medical institution experience.After eliminating the interference of confounding factors, a comparative analysis was conducted to delve deeply into the relationship between residents' satisfaction and their experiences at medical facilities. RESULTS: The study incorporated a large dataset encompassing 2356 community residents. Upon successful propensity score matching, logistic regression analysis elucidated several determinants of overall resident satisfaction. Notably, the grade of the medical institution (χ2 = 8.226, P < .05), satisfaction with the time invested in the registration process (χ2 = 11.04, P < .05), satisfaction with the waiting duration for consultation (χ2 = 15.759, P < .05), and satisfaction with the travel time to the hospital (χ2 = 45.157, P < .05) each exerted significant influence on the holistic satisfaction of residents with their medical experience. CONCLUSION: Factors such as the grade of the medical institution, satisfaction related to registration and waiting durations, and travel time to the hospital emerged as crucial determinants shaping community residents' holistic satisfaction with their medical encounters. These findings underscore the exigency for strategic allocation and optimization of medical resources, refinement of the classification system, and enhancement of public health education on the graded diagnosis and treatment schema. The study also demonstrates the value of employing advanced propensity score matching and predictive modelling techniques in health services research.


Asunto(s)
Satisfacción del Paciente , Puntaje de Propensión , Humanos , China , Masculino , Femenino , Persona de Mediana Edad , Adulto , Encuestas y Cuestionarios , Anciano , Listas de Espera , Adulto Joven , Pacientes Ambulatorios , Factores de Tiempo
18.
Front Nutr ; 11: 1422431, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39246401

RESUMEN

Ghrelin, a peptide primarily secreted in the stomach, acts via the growth hormone secretagogue receptor (GHSR). It regulates several physiological processes, such as feeding behavior, energy homeostasis, glucose and lipid metabolism, cardiovascular function, bone formation, stress response, and learning. GHSR exhibits significant expression within the central nervous system. However, numerous murine studies indicate that ghrelin is limited in its ability to enter the brain from the bloodstream and is primarily confined to specific regions, such as arcuate nucleus (ARC) and median eminence (ME). Nevertheless, the central ghrelin system plays an essential role in regulating feeding behavior. Furthermore, the role of vagal afferent fibers in regulating the functions of ghrelin remains a major topic of discussion among researchers. In recent times, numerous studies have elucidated the substantial therapeutic potential of ghrelin in most gastrointestinal (GI) diseases. This has led to the development of numerous pharmaceutical agents that target the ghrelin system, some of which are currently under examination in clinical trials. Furthermore, ghrelin is speculated to serve as a promising biomarker for GI tumors, which indicates its potential use in tumor grade and stage evaluation. This review presents a summary of recent findings in research conducted on both animals and humans, highlighting the therapeutic properties of ghrelin system in GI disorders.

19.
Int Immunopharmacol ; 131: 111844, 2024 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-38503013

RESUMEN

OBJECTIVES: Diabetic nephropathy (DN) is characterized by albuminuria and renal dysfunction caused by diabetes. At present there is no specific treatment for DN. Irbesartan (IRB) is an angiotensin receptor inhibitor indicated for the treatment of hypertension and DN. However, the underlying molecular mechanisms of IRB on DN remains obscure. METHODS: RAW264.7 macrophages were incubated in RPMI-1640, cell viability was evaluated by CCK-8 assays, transcriptional level of proinflammatory cytokines and was measured by ELISA and qPCR, NLRP3 inflammasome and Nrf2/Keap1 related proteins were measured by Western blotting and immunohistochemistry. Streptozotocin (STZ)-induced diabetic male C57BL/6 mice were used to evaluate the therapeutic effect of IRB on DN. Key findings First, we found that IRB improved high glucose-induced cell inflammation by inhibiting the transcription of IL-1ß and IL-18. IRB activated the Nrf2/Keap1 pathway and decreased the release of reactive oxygen species (ROS). IRB also suppressed the expression of NLRP3 and caspase-1. IRB combined with the N-acetylcysteine (NAC) significantly inhibited the activation of NLRP3 inflammasomes. Conversely, IRB combined with the Nrf2-related inhibitor ML385 enhanced NLRP3 inflammasome activation, suggesting that IRB suppressed NLRP3 inflammasome via the Nrf2 pathway. In vivo study, HE staining and immunohistochemistry analysis further showed that IRB ameliorated high glucose-induced renal injury by elevating the expression of the Nrf2/Keap1 signaling pathway and suppressing the proinflammatory cytokine and NLRP3 inflammasome activation. CONCLUSIONS: Our results suggested that IRB ameliorates diabetic nephropathy by activating the Nrf2/Keap1 pathway and suppressing the NLRP3 inflammasomes in vivo and in vitro. These findings provide new therapeutic strategies of diabetic nephropathy.


Asunto(s)
Diabetes Mellitus , Nefropatías Diabéticas , Ratones , Animales , Masculino , Inflamasomas/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Nefropatías Diabéticas/tratamiento farmacológico , Nefropatías Diabéticas/metabolismo , Irbesartán/uso terapéutico , Factor 2 Relacionado con NF-E2/metabolismo , Proteína 1 Asociada A ECH Tipo Kelch/metabolismo , Ratones Endogámicos C57BL , Especies Reactivas de Oxígeno/metabolismo , Glucosa
20.
Front Oncol ; 13: 1158385, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37197433

RESUMEN

The most common primary cardiac tumors in adults are atrial myxomas, with adolescent-onset being uncommon. In this case report, a 15-year-old female was hospitalized with cerebrovascular embolism and later diagnosed with a left atrial myxoma. She had previously shown signs of distal vascular micro thrombosis, including recurring bilateral lower extremity rash, which are crucial for the early diagnosis and differential diagnosis of atrial mucinous neoplasm. We reviewed the various clinical symptoms and diagnostic approaches to identify left atrial mucinous neoplasm. This patient also had a combination of endocrine-related diseases. We reviewed the diagnostic approach for the Carney Complex (CNC) and discussed the role of thyroid disease in diagnosing CNC.

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