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1.
Apoptosis ; 28(11-12): 1596-1617, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37658919

RESUMEN

SARS-CoV-2 Envelope protein (E) is one of the crucial components in virus assembly and pathogenesis. The current study investigated its role in the SARS-CoV-2-mediated cell death and inflammation in lung and gastrointestinal epithelium and its effect on the gastrointestinal-lung axis. We observed that transfection of E protein increases the lysosomal pH and induces inflammation in the cell. The study utilizing Ethidium bromide/Acridine orange and Hoechst/Propidium iodide staining demonstrated necrotic cell death in E protein transfected cells. Our study revealed the role of the necroptotic marker RIPK1 in cell death. Additionally, inhibition of RIPK1 by its specific inhibitor Nec-1s exhibits recovery from cell death and inflammation manifested by reduced phosphorylation of NFκB. The E-transfected cells' conditioned media induced inflammation with differential expression of inflammatory markers compared to direct transfection in the gastrointestinal-lung axis. In conclusion, SARS-CoV-2 E mediates inflammation and necroptosis through RIPK1, and the E-expressing cells' secretion can modulate the gastrointestinal-lung axis. Based on the data of the present study, we believe that during severe COVID-19, necroptosis is an alternate mechanism of cell death besides ferroptosis, especially when the disease is not associated with drastic increase in serum ferritin.


Asunto(s)
Apoptosis , COVID-19 , Humanos , SARS-CoV-2 , Necroptosis/genética , Proteína Serina-Treonina Quinasas de Interacción con Receptores/metabolismo , Pulmón/metabolismo , Inflamación/patología , Colon/metabolismo , Colon/patología
2.
Noncoding RNA Res ; 9(4): 1308-1314, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39050795

RESUMEN

Cancer stem cells (CSCs) are pivotal in both cancer progression and the acquisition of drug resistance. MicroRNAs (miRNAs) play a crucial role in modulating CSC properties and are being explored as potential targets for therapeutic interventions. MiR-3163 is primarily known for its tumor suppressive properties in various human malignancies, with lower expression reported across different cancer types. However, its role in regulating the ovarian CSC phenotype and the underlying mechanism remain largely unknown. Here, we report a remarkable downregulation of miR-3163 in ovarian cancer stem-like cells (CSLCs). Enforced expression of miR-3163 in ovarian adherent and CSLCs, significantly disrupts the stemness phenotype. Moreover, downregulation of miR-3163 expression in ovarian cancer cells (OV2008 and OVCAR-3) inhibits the stem-like cells characterized by CD44+CD117+ expression. Sphere formation assay results reveal that overexpression of miR-3163 in ovarian cancer cells significantly inhibits spheroid formation ability, confirming the regulatory properties of miR-3163 on ovarian CSLCs. Mechanistic investigation reveals that miR-3163 depletes ovarian CSLCs via targeting SOX-2. Furthermore, we establish SOX-2 as a direct target of miR-3163 through dual-luciferase assay. Taken together, our study demonstrates that overexpression of miR-3163 could be a promising strategy for efficiently eradicating the CSC population to prevent chemoresistance and tumor relapse in ovarian cancer patients.

3.
J Ayurveda Integr Med ; 15(5): 100964, 2024 Sep 07.
Artículo en Inglés | MEDLINE | ID: mdl-39244870

RESUMEN

A 42-year-old male patient presented with complaints of vertigo, neck pain, swallowing difficulties, and difficulty in maintaining an upright posture. The patient took allopathic consultation for the complaints and was advised to undergo MDCT scan of brain, hematological and audiological evaluations. No abnormalities were detected in the investigations and he was given some medications for symptomatic management. As no relief was noted, the patient took an Ayurveda consultation. After clinical evaluation, the patient was advised to perform an X-ray of the cervical spine and was diagnosed with congenital block vertebrae at C3 - C4 vertebral bodies and posterior appendages with hypoplastic intervening disc space. He was advised to take Ekangveerarasa 250 mg BD before food with honey, Trayodashang guggulu 1 gm BD after food, Vishatinduka vati 250 mg BD after food, Aswagandha churna 3 gm BD after food with milk.The patient was also advised to do light massage and mild hot fomentation in the neck region twice a day with Mahavishagarbha oil. Remarkable relief was observed with all signs and symptoms including a reduction of score in the Neck Disability Index (NDI) within a very short duration of treatment. Considerable improvements were noted in the quality of life of the patient as confirmed by the WHO QOL BREF score. This case report shows that Ayurveda can offer safer and more effective symptomatic treatment for conditions like congenitally fused vertebrae.

4.
J Infect Public Health ; 17(8): 102486, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39002466

RESUMEN

High mortality has been reported in severe cases of COVID-19. Emerging reports suggested that the severity is not only due to SARS-CoV-2 infection, but also due to coinfections by other pathogens exhibiting symptoms like COVID-19. During the COVID-19 pandemic, simultaneous respiratory coinfections with various viral (Retroviridae, Flaviviridae, Orthomyxoviridae, and Picoviridae) and bacterial (Mycobacteriaceae, Mycoplasmataceae, Enterobacteriaceae and Helicobacteraceae) families have been observed. These pathogens intensify disease severity by potentially augmenting SARSCoV-2 replication, inflammation, and modulation of signaling pathways. Coinfection emerges as a critical determinant of COVID-19 severity, principally instigated by heightened pro-inflammatory cytokine levels, as cytokine storm. Thereby, in co-infection scenario, the severity is also driven by the modulation of inflammatory signaling pathways by both pathogens possibly associated with interleukin, interferon, and cell death exacerbating the severity. In the current review, we attempt to understand the role of co- infections by other pathogens and their involvement in the severity of COVID-19.


Asunto(s)
COVID-19 , Coinfección , SARS-CoV-2 , Índice de Severidad de la Enfermedad , Humanos , Coinfección/microbiología , Coinfección/virología , COVID-19/complicaciones , Infecciones Bacterianas/complicaciones , Síndrome de Liberación de Citoquinas , Citocinas/metabolismo
6.
Artículo en Inglés | MEDLINE | ID: mdl-24918095

RESUMEN

BACKGROUND: Dyslipidemia is one of the major risk factors for cardiovascular disease in diabetes mellitus. Early detection and treatment of dyslipidemia in type-2 diabetes mellitus can prevent risk for atherogenic cardiovascular disorder. The rationale of this study was to detect the lipid abnormality in diabetic patients. METHODS: Necessary data was collected from the medical archives of 150 patients (73 female and 77 male) with diabetes mellitus registered in Department of pathology and biochemistry of a Ayurveda hospital established at Kolkata, India. RESULTS: The mean ages of female and male subjects were 51.8 ± 10.8 and 53.2 ± 11.3 years respectively. The range and mean value of FBS in females were 113-342 mg/dl and 157.7 ± 6.3 mg/dl, while the range and mean value of PPBS in females were 135-560 mg/dl and 275.5 ± 12.3 mg/dl respectively. Results showed that range and mean value of FBS in males were 111-462 mg/dl and 160.8 ± 7.4 mg/dl, while the range and mean value of PPBS in males were 136-598 mg/dl and 302.1 ± 12.6 mg/dl respectively. Results of serum lipids showed that the mean values for total cholesterol (TC), triglyceride (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C) and very low density lipoprotein cholesterol (VLDL-C) in female patients were 202.2 ± 5.9 mg/dl, 168.3 ± 8.2 mg/dl, 44.9 ± 1.3 mg/dl, 123.6 ± 5.2 mg/dl and 33.7 ± 1.7 mg/dl respectively. The mean values for TC, TG, HDL-C, LDL-C and VLDL-C in male patients were 182.5 ± 4.8 mg/dl, 128.1 ± 10.8 mg/dl, 40.8 ± 1.2 mg/dl, 105.4 ± 4.8 mg/dl and 36.2 ± 2.2 respectively. FBS showed significant positive correlation with PPBS, cholesterol, TG, and VLDL-C. PPBS also demonstrated direct and significant correlations with TG and VLDL-C. CONCLUSIONS: The study showed common lipid abnormalities during diabetes induced dyslipidemia i.e., hypercholesterolemia, hypertriglyceridemia and elevated LDL-C. This study suggests the dominance of hyperlipidemia over increased prevalence of dyslipidemia.

7.
J Agric Food Chem ; 58(8): 5081-5, 2010 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-20353171

RESUMEN

Sucrose content in soybean seeds is desired to be high because as a sweetness-imparting component, it helps in wider acceptance of soy-derived food products. Conversely, galactosyl derivatives of sucrose, that is, raffinose and stachyose, which are flatulence-inducing components, need to be in low concentration in soybean seeds not only for augmenting utilization of the crop in food uses but also for delivering soy meal with improved metabolizable energy for monogastric animals. In the present study, analysis of 148 soybean genotypes for sucrose and total raffinose family oligosaccharides (RFOs) contents revealed a higher variation (4.80-fold) for sucrose than for RFOs content (2.63-fold). High-performance liquid chromatography analyses revealed ranges of 0.64-2.53 and 2.09-7.1 mmol/100 g for raffinose and stachyose contents, respectively. As information concerning the environmental effects on the sucrose and RFOs content in soybean seeds is not available, we also investigated a set of seven genotypes raised at widely different geographical locations for these quality traits. Sucrose content was found to be significantly higher at cooler location (Palampur); however, differences observed for raffinose and stachyose contents across the growing locations were genotype-dependent. The results suggest that soybean genotypes grown at cooler locations may be better suited for processing soy food products with improved taste and flavor.


Asunto(s)
Glycine max/embriología , Rafinosa/aislamiento & purificación , Semillas/química , Sacarosa/aislamiento & purificación , Cromatografía Líquida de Alta Presión , Genotipo
8.
J Agric Food Chem ; 58(7): 4298-302, 2010 Apr 14.
Artículo en Inglés | MEDLINE | ID: mdl-20218609

RESUMEN

Three Indian soybean genotypes, namely, Kalitur, Hara soya and NRC37 with black, green and yellow colored seed coat respectively were gamma irradiated at a dose of 0.5, 2.0, and 5.0 kGy. The total isoflavones and total phenol content (TPC) in all the genotypes increased significantly at a dose of 0.5 and 2 kGy respectively. The anthocyanin content was high in Kalitur, while other genotypes showed no detectable amounts of it. The hydroxyl radical scavenging activity (HRSA), DPPH free radical scavenging activity (FRSA) and total antioxidant power (TAP) were highest in Kalitur with black seed coat color. However, maximum enhancement in antioxidant properties was found in NRC37 with yellow followed by Hara soya with green seed coat color at a dose of 0.5 and 2.0 kGy. It was also observed that the 3 soybean genotypes showed an increase in antioxidant constituents and antioxidative properties at lower doses of 0.5 and 2.0 kGy while, the antioxidant effects of soy seeds were either decreased or remained constant at a higher dose of 5.0 kGy. It is suggested that mild gamma irradiation enhanced the antioxidant constituents and, hence, antioxidant potential of soybean seeds.


Asunto(s)
Antocianinas/análisis , Antioxidantes/análisis , Glycine max/química , Glycine max/efectos de la radiación , Isoflavonas/análisis , Fenoles/análisis , Pigmentos Biológicos/análisis , Rayos gamma , Extractos Vegetales/análisis , Semillas/química , Semillas/efectos de la radiación
9.
J Agric Food Chem ; 57(7): 2705-10, 2009 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-19256542

RESUMEN

Immature seeds of soybean are becoming increasingly popular as a snack/vegetable to harness the health benefits of soybean. They are shelled from the immature pods picked from the mother plant at different reproductive stages. Information concerning changes in antioxidant constituents and antioxidant capacity during reproductive phases of soybean seeds is scarce. The aim of the present study was to determine whether immature seeds picked at different reproductive stages differ in tocopherol, isoflavone, total phenolic contents, free radical scavenging activity, and total antioxidative capacity. Seeds shelled from the soybean pods picked at three reproductive stages (R5, R6, and R7) as well as at full maturity were subjected to high-performance liquid chromatography analyses for tocopherol and isoflavone contents. Significantly higher values (P<0.05) were observed for tocopherols and isoflavones in immature seeds picked at late reproductive stages. At the first reproductive stage, that is, R5 stage, delta-tocopherol was the predominant form of tocopherol, whereas in subsequent reproductive stages as well as at complete maturity stage, the gamma-isomer contributed maximum proportion to the total tocopherol content. Genistein was, in general, the major form of isoflavone at all reproductive stages. Reduction in free radical scavenging activity, total antioxidant capacity, and total phenolic content in late-picked seeds concomitant with increased concentration of tocopherol and isoflavone isomers was observed. The results show that bioactive constituents other than isoflavones and tocopherols may decline with the advancement of maturity.


Asunto(s)
Antioxidantes/farmacología , Glycine max , Isoflavonas/análisis , Fenoles/análisis , Semillas/crecimiento & desarrollo , Tocoferoles/análisis , Antioxidantes/análisis , Depuradores de Radicales Libres/análisis , Depuradores de Radicales Libres/farmacología , Lactógeno Placentario , Semillas/química
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