Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 410
Filtrar
Mais filtros

Tipo de documento
Intervalo de ano de publicação
1.
BMC Public Health ; 24(1): 453, 2024 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-38350875

RESUMO

BACKGROUND: Multimorbidity, the concurrent presence of two or more chronic conditions is an emerging public health challenge. Till date, most of the research have focused on the presence and interaction of selected co-morbidities in tuberculosis (TB). There exist a critical knowledge gap on the magnitude of multimorbidity among TB patients and its impact on health outcomes. METHODS: We undertook a cross-sectional study to assess the prevalence and patterns of multimorbidity among newly diagnosed TB patients in two states of India. A total of 323 patients were interviewed using a structured multimorbidity assessment questionnaire for primary care (MAQ-PC). MAQ-PC is already validated for Indian population and elicits 22 chronic conditions. We defined TB multimorbidity as the co-existence of TB with one or more chronic conditions and identified commonly occurring dyads (TB + single condition) and triads (TB + two conditions). RESULTS: More than half (52%) of TB patients reported multimorbidity. Among dyads, depression, diabetes mellitus (DM), acid peptic disease (APD), hypertension, chronic alcoholism, arthritis and chronic back ache (CBA) were the most common co-occurring conditions while 'DM + arthritis', 'depression + APD', 'depression + DM' were the most commonly occurring triads among TB patients. Factors such as increasing age, low levels of education, alcohol abusers, drug-resistant TB and having health insurance were significantly associated with multimorbidity among TB patients. CONCLUSIONS: Our findings suggest high prevalence of multimorbidity among newly diagnosed TB patients in India. The presence of concordant and discordant conditions with TB may increase the health complexity, thus necessitating appropriate care protocols. Given, the current situation, wherein TB and non-communicable diseases (NCD) services are delivered through collaborative framework between programmes, there is a need for addressing multimorbidity at the healthcare delivery level.


Assuntos
Artrite , Diabetes Mellitus , Tuberculose , Humanos , Multimorbidade , Estudos Transversais , Tuberculose/epidemiologia , Doença Crônica , Prevalência , Índia/epidemiologia
2.
Ultrasound Obstet Gynecol ; 56(5): 678-683, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-31763720

RESUMO

OBJECTIVES: Fetal surgery for repair of open neural tube defect (ONTD) typically results in decreased need for a ventriculoperitoneal shunt (VPS). Our objectives were to determine the trend in ventricle size (VS) during pregnancy and whether VS and change in VS, as assessed by ultrasound, were predictive of the need for VPS in pregnancy with ONTD. METHODS: This was a retrospective analysis of prospectively collected data of consecutive pregnancies with ONTD, evaluated in a single center from January 2012 to May 2018. Two groups were identified: the first consisted of pregnancies that underwent in-utero repair (IUR) and the second those that had postnatal repair (PNR). Penalized B splines were used to determine the trend in VS, across 2-week gestational-age (GA) epochs, between 24 and 36 weeks of gestation. VS at each GA epoch and the change in VS between each GA epoch were compared between the IUR and PNR groups. To determine whether VS at any GA was predictive of VPS, receiver-operating-characteristics (ROC) curves were used and the optimal cut-off at each GA epoch was identified. Univariate analysis and multiple logistic regression were used for further analysis. RESULTS: ONTD was diagnosed in 110 fetuses, of whom 69 underwent IUR and 41 had PNR. Fetuses in the IUR group were more likely to have Chiari II malformation (100.0% vs 82.9%; P < 0.01), lower GA at delivery (34.9 ± 3.2 vs 37.1 ± 2.1 weeks; P < 0.01) and lower rates of VPS within the first year postpartum (36.2% vs 61.0%; P = 0.02) compared with the PNR group. In both groups, VS increased steadily with GA from the initial evaluation to delivery. In the IUR group, there was a significant change in VS between the 24 + 0 to 25 + 6-week and the 26 + 0 to 27 + 6-week epochs (2.3 (95% CI, 0.4-4.1) mm; P = 0.02). There was a positive trend in the change in VS at later GAs, but this was not significant. Although there was no significant change in VS in the PNR group before 30 weeks, there was a positive trend after that time. On multivariate analysis, each week of advancing GA was associated with a mean increase of 0.74 mm in VS (P < 0.0001) in both groups. VS was not associated with the level or type of lesion, but presence of Chiari II malformation was associated with a mean increase of 5.88 mm (P < 0.0001) in VS in both the IUR and PNR groups. VS was modestly predictive of need for VPS in both groups, with area under ROC curves between 0.68 and 0.76 at the different GA epochs. Change in VS between the first and last measurements was also modestly predictive of the need for VPS, with better performance in the PNR group. CONCLUSIONS: VS increased with advancing GA in all fetuses with ONTD, although in the IUR group this increase occurred immediately after fetal surgery and in the PNR group it occurred after 30 weeks of gestation. In-utero surgery was associated with a decreased rate of VPS and was more predictive of need for VPS than was VS. Postnatal factors resulting in increased need for VPS in the PNR group need to be assessed further. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.


Assuntos
Ventrículos Cerebrais/diagnóstico por imagem , Defeitos do Tubo Neural/diagnóstico por imagem , Defeitos do Tubo Neural/cirurgia , Ultrassonografia Pré-Natal/estatística & dados numéricos , Derivação Ventriculoperitoneal/estatística & dados numéricos , Adulto , Ventrículos Cerebrais/embriologia , Feminino , Terapias Fetais/estatística & dados numéricos , Idade Gestacional , Humanos , Lactente , Recém-Nascido , Defeitos do Tubo Neural/embriologia , Valor Preditivo dos Testes , Gravidez , Estudos Prospectivos , Curva ROC , Estudos Retrospectivos , Resultado do Tratamento
3.
Calcif Tissue Int ; 103(2): 175-188, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29500623

RESUMO

The present study investigates Raman scattering of human bone irradiated with 50 Gy single dose during therapeutic treatment of Ewing and Osteosarcoma. Bone quality was evaluated via mineral-to-matrix ratio, degree of crystallinity, change in amount of calcium, and carbonate substitution. Alteration in collagen and its cross-links was quantified through second-derivative deconvolution of Amide I peak. A dose of 50 Gy radiation leads to almost 50% loss of mineral content, while maintaining mineral crystallinity, and small changes in carbonate substitution. Deconvolution of Amide I suggested modifications in collagen structure via increase in amount of enzymatic trivalent cross-linking (p < 0.05). Overall irradiation led to detrimental effect on bone quality via changes in its composition, consequently reducing its elastic modulus with increased plasticity. The study thus quantifies effect of single-dose 50 Gy radiation on human bone, which in turn is necessary for designing improved radiation dosage during ECRT and for better understanding post-operative care.


Assuntos
Neoplasias Ósseas/radioterapia , Osso e Ossos/efeitos da radiação , Osteossarcoma/radioterapia , Sarcoma de Ewing/radioterapia , Adolescente , Adulto , Amidas/química , Cadáver , Carbonatos/química , Criança , Colágeno/efeitos da radiação , Feminino , Humanos , Masculino , Período Pós-Operatório , Análise Espectral Raman , Tíbia/diagnóstico por imagem , Tíbia/patologia , Adulto Jovem
4.
Inorg Chem ; 57(18): 11333-11340, 2018 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-30188706

RESUMO

The synthesis of selenium and tellurium core-modified carbaporphyrinogens was carried out by the reaction of functional selenophene/tellurophene diols with azulene or a benzitripyrrane in the presence of acid. The products were obtained in moderate yields and were characterized by using 1H and 13C NMR, UV-vis, FT-IR, CV, and HRMS spectroscopic techniques. Further, oxidation of the obtained core-modified carbaporphyrinogens in the presence of DDQ in CHCl3 afforded the corresponding carbaporphyrins in good yields. Benziporphyrins showed no indication of a ring current or macrocyclic aromaticity as confirmed by using proton NMR spectroscopy, but the addition of TFA gave rise to the formation of weakly diatropic dications.

5.
J Anim Physiol Anim Nutr (Berl) ; 102(1): 276-285, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28299856

RESUMO

Heat stress (HS) disrupts redox balance and insulin-related metabolism. Supplementation with supranutritional amounts of selenium (Se) may enhance glutathione peroxidase (GPX) activity and reduce oxidative stress, but may trigger insulin resistance. Therefore, the aim of this experiment was to investigate the effects of a short-term high Se supplementation on physiology, oxidative stress and insulin-related metabolism in heat-stressed pigs. Twenty-four gilts were fed either a control (0.20 ppm Se) or a high Se (1.0 ppm Se yeast, HiSe) diet for 2 weeks. Pigs were then housed in thermoneutral (20°C) or HS (35°C) conditions for 8 days. Blood samples were collected to study blood Se and oxidative stress markers. An oral glucose tolerance test (OGTT) was conducted on day 8 of thermal exposure. The HS conditions increased rectal temperature and respiration rate (both p < .001). The HiSe diet increased blood Se by 12% (p < .05) and ameliorated the increase in rectal temperature (p < .05). Heat stress increased oxidative stress as evidenced by a 48% increase in plasma advanced oxidized protein products (AOPPs; p < .05), which may be associated with the reductions in plasma biological antioxidant potential (BAP) and erythrocyte GPX activity (both p < .05). The HiSe diet did not alleviate the reduction in plasma BAP or increase in AOPPs observed during HS, although it tended to increase erythrocyte GPX activity by 13% (p = .068). Without affecting insulin, HS attenuated lipid mobilization, as evidenced by a lower fasting NEFA concentration (p < .05), which was not mitigated by the HiSe diet. The HiSe diet increased insulin AUC, suggesting it potentiated insulin resistance, although this only occurred under TN conditions (p = .066). In summary, HS induced oxidative stress and attenuated lipid mobilization in pigs. The short-term supranutritional Se supplementation alleviated hyperthermia, but did not protect against oxidative stress in heat-stressed pigs.


Assuntos
Transtornos de Estresse por Calor/veterinária , Insulina/metabolismo , Selênio/farmacologia , Doenças dos Suínos/prevenção & controle , Animais , Glicemia/efeitos dos fármacos , Suplementos Nutricionais , Eritrócitos/enzimologia , Ácidos Graxos não Esterificados/sangue , Feminino , Regulação Enzimológica da Expressão Gênica/efeitos dos fármacos , Teste de Tolerância a Glucose , Glutationa Peroxidase/metabolismo , Transtornos de Estresse por Calor/complicações , Transtornos de Estresse por Calor/tratamento farmacológico , Oxirredução , Selênio/administração & dosagem , Suínos , Doenças dos Suínos/etiologia
6.
Indian J Med Res ; 145(1): 51-57, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28574014

RESUMO

BACKGROUND & OBJECTIVES: Kangaroo mother care (KMC - early continuous skin-to-skin contact between mother and infants) has been recommended as an alternative care for low birth weight infants. There is limited evidence in our country on KMC initiated at home. The present study was undertaken to study acceptability of KMC in different community settings. METHODS: A community-based pilot study was carried out at three sites in the States of Odisha, Gujarat and Maharashtra covering rural, urban and rural tribal population, respectively. Trained health workers provided IEC (information, education and communication) on KMC during antenatal period along with essential newborn care messages. These messages were reinforced during the postnatal period. Outcome measures were the proportion of women accepting KMC, duration of KMC/day and total number of days continuing KMC. Focus group discussions and in-depth interviews were also carried out. RESULTS: KMC was provided to 101 infants weighing 1500-2000 g; 57.4 per cent were preterm. Overall, 80.2 per cent mothers received health education on KMC during antenatal period, family members (68.3%) also attended KMC sessions along with pregnant women and 55.4 per cent of the women initiated KMC within 72 h of birth. KMC was provided on an average for five hours per day. Qualitative survey data indicated that the method was acceptable to mothers and family members; living in nuclear family, household work, twin pregnancy, hot weather, etc., were cited as reasons for not being able to practice KMC for a longer duration. INTERPRETATION & CONCLUSIONS: It was feasible to provide KMC using existing infrastructure, and the method was acceptable to most mothers of low birth infants.


Assuntos
Recém-Nascido de Baixo Peso/crescimento & desenvolvimento , Método Canguru , Feminino , Humanos , Índia , Lactente , Recém-Nascido , Projetos Piloto , Gravidez
7.
J Food Sci Technol ; 53(1): 31-41, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26787930

RESUMO

Peanut is an important crop grown worldwide. Commercially it is used mainly for oil production but apart from oil, the by-products of peanut contains many other functional compounds like proteins, fibers, polyphenols, antioxidants, vitamins and minerals which can be added as a functional ingredient into many processed foods. Recently it has also revealed that peanuts are excellent source of compounds like resveratrol, phenolic acids, flavonoids and phytosterols that block the absorption of cholesterol from diet. It is also a good source of Co-enzyme Q10 and contains all the 20 amino acids with highest amount of arginine. These bioactive compounds have been recognized for having disease preventive properties and are thought to promote longevity. The processing methods like roasting and boiling have shown increase in the concentration of these bioactive compounds. In the present paper an overview on peanut bioactive constituents and their health benefits are presented.

8.
J Org Chem ; 80(8): 3880-90, 2015 Apr 17.
Artigo em Inglês | MEDLINE | ID: mdl-25803565

RESUMO

The 3+1 condensation of symmetrical 16-Selena/telluratripyrranes with symmetrical selenophene-2,5-diols/tellurophene-2,5-diols in the presence of BF3-etheratre or BF3-methanol followed by oxidation with DDQ gave 5,10-porphodimethenes, whereas the process with unsymmetrical selenophene-2,5-diols/tellurophene-2,5-diols gave 5-porphomethenes. In addition, the reaction of unsymmetrical 16-Selena/telluratripyrranes with symmetrical selenophene-2,5-diols/tellurophene-2,5-diols gave the corresponding porphotrimethenes, whereas the process with unsymmetrical selenophene-2,5-diols/tellurophene-2,5-diols gave the 5,15-porphodimethenes. The structures of different products were characterized by IR, (1)H and (13)C NMR, (1)H-(1)H COSY, CHN analysis, and mass spectrometry. The binding of mercury with the calix[4]phyrins mentioned above had been observed in the decreasing order of porphodimethenes > porphomethenes > porphotrimethenes by UV-vis and (1)H NMR spectroscopy.


Assuntos
Álcoois/química , Calixarenos/química , Etano/química , Metano/química , Selênio/química , Telúrio/química , Etano/análogos & derivados , Espectroscopia de Ressonância Magnética , Metano/análogos & derivados , Estrutura Molecular , Oxirredução
9.
BMC Complement Altern Med ; 15: 296, 2015 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-26306668

RESUMO

BACKGROUND: Multi-factorial etiology exists in pathophysiology of neurodegenerative diseases. The imbalance of anti-oxidant enzymes and dopamine level leads to Parkinsonism. The objective of this study was to assess the protective effect of Spirulina fusiform alone and in combination with amantadine against Parkinsonism effect in 6-hydroxydopamine (6-OHDA) induced rat model. METHODS: S. fusiform was administered in different groups (500 mg/kg, once daily and twice daily) and a combination of spirulina (500 mg/kg, once daily) with amantadine (20 mg/kg once daily) for 30 days before and 14 days after a single injection of 6-OHDA into the dorsal striatum. Post lesion produced rotational behavior which was measured at two week intervals (37th and 44th day). Locomotors activity was also done at 44th and muscle coordination at 48th day. Dorsal striatum was isolated from rat brain for evaluating the antioxidant assays and dopamine content at 49th day. RESULTS: Both the body rotations (ipsilateral and contralateral) were found to have a statistically significant (p<0.001) decrease by 34.26 and 52% after treatment with spirulina (Twice a day) in spirulina treated lesioned group. A higher percentage of improvement was shown in the reduction of ipsilateral (57.34%) and contralateral (78.3%) rotations in combination of spirulina with amantadine treated lesioned group rather than spirulina alone treated lesioned groups when compared with positive control lesioned group. Body movements and locomotor activity were improved statistically (p<0.0001) significant in both treated lesioned groups (Combination of spirulina with amantadine and spirulina twice daily). Similar results were also seen in anti-oxidant levels which later on reached to the normal value. The levels of dopamine content had a statistically significant (p<0.0001) increase by 78.3% only in case of spirulina with amantadine treated lesioned group. CONCLUSION: Spirulina is a potent nutraceutical supplement all over the world, so my preclinical study may contribute to give an additional adjuvant drug therapy in aging related disorders (Neurodegenerative as well as diabetes associated neurodegenerative disorders).


Assuntos
Amantadina/farmacologia , Suplementos Nutricionais , Fármacos Neuroprotetores/farmacologia , Transtornos Parkinsonianos , Spirulina , Animais , Oxidopamina , Transtornos Parkinsonianos/induzido quimicamente , Transtornos Parkinsonianos/fisiopatologia , Ratos
10.
BJOG ; 121(11): 1395-402, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24506582

RESUMO

OBJECTIVE: To compare composite maternal and neonatal morbidities (CMM, CNM) among nulliparous women with primary indications for caesarean section (CS) as acute clinical emergency (group I; ACE), non-reassuring fetal heart rate (group II) and arrest disorder (group III). DESIGN: A multicentre prospective study. SETTING: Nineteen academic centres in the USA, with deliveries in 1999-2002. POPULATION: Nulliparous women (n = 9829) that had CS. METHODS: Nulliparous women undergoing CS for three categories of indications were compared using logistic regression model, adjusted for five variables. MAIN OUTCOME MEASURES: CMM was defined as the presence of any of the following: intrapartum or postpartum transfusion, uterine rupture, hysterectomy, cystotomy, ureteral or bowel injury or death; CNM was defined as the presence of any of the following: umbilical arterial pH <7.00, neonatal seizure, cardiac, hepatic, renal dysfunction, hypoxic ischaemic encephalopathy or neonatal death. RESULTS: The primary reasons for CS were ACE in 1% (group I, n = 114) non-reassuring FHR in 29% (group II; n = 2822) and failed induction/dystocia in the remaining 70% (group III; n = 6893). The overall risks of CMM and CNM were 2.5% (95% confidence intervals, CI, 2.2-2.8%) and 1.9% (95% CI 1.7-2.2), respectively. The risk of CMM was higher in group I than in group II (RR 4.1, 95% CI 3.1, 5.3), and group III (RR 3.2, 95% CI 2.7, 3.7). The risk of CNM was also higher in group I than in group II (RR 2.8, 95% CI 2.3, 3.4) and group III (RR 14.1, 95% CI 10.7, 18.7). CONCLUSIONS: Nulliparous women who have acute clinically emergent caesarean sections are at the highest risks of both composite maternal and neonatal morbidity and mortality.


Assuntos
Cesárea , Medicina de Emergência , Paridade , Adulto , Cesárea/mortalidade , Cesárea/estatística & dados numéricos , Cistotomia/efeitos adversos , Cistotomia/mortalidade , Feminino , Cardiopatias/epidemiologia , Humanos , Hipóxia-Isquemia Encefálica/epidemiologia , Histerectomia/efeitos adversos , Histerectomia/mortalidade , Recém-Nascido , Enteropatias/epidemiologia , Nefropatias/epidemiologia , Hepatopatias/epidemiologia , Masculino , Morbidade , Gravidez , Estudos Prospectivos , Fatores de Risco , Convulsões/epidemiologia , Artérias Umbilicais/patologia , Estados Unidos/epidemiologia , Doenças Uterinas/mortalidade
12.
Vaccine ; 41(2): 486-495, 2023 01 09.
Artigo em Inglês | MEDLINE | ID: mdl-36481106

RESUMO

INTRODUCTION: Supplementary immunization activities (SIAs) aim to interrupt measles transmission by reaching susceptible children, including children who have not received the recommended two routine doses of MCV before the SIA. However, both strategies may miss the same children if vaccine doses are highly correlated. How well SIAs reach children missed by routine immunization is a key metric in assessing the added value of SIAs. METHODS: Children aged 9 months to younger than 5 years were enrolled in cross-sectional household serosurveys conducted in five districts in India following the 2017-2019 measles-rubella (MR) SIA. History of measles containing vaccine (MCV) through routine services or SIA was obtained from documents and verbal recall. Receipt of a first or second MCV dose during the SIA was categorized as "added value" of the SIA in reaching un- and under-vaccinated children. RESULTS: A total of 1,675 children were enrolled in these post-SIA surveys. The percentage of children receiving a 1st or 2nd dose through the SIA ranged from 12.8% in Thiruvananthapuram District to 48.6% in Dibrugarh District. Although the number of zero-dose children prior to the SIA was small in most sites, the proportion reached by the SIA ranged from 45.8% in Thiruvananthapuram District to 94.9% in Dibrugarh District. Fewer than 7% of children remained measles zero-dose after the MR SIA (range: 1.1-6.4%) compared to up to 28% before the SIA (range: 7.3-28.1%). DISCUSSION: We demonstrated the MR SIA provided considerable added value in terms of measles vaccination coverage, although there was variability across districts due to differences in routine and SIA coverage, and which children were reached by the SIA. Metrics evaluating the added value of an SIA can help to inform the design of vaccination strategies to better reach zero-dose or undervaccinated children.


Assuntos
Sarampo , Rubéola (Sarampo Alemão) , Humanos , Criança , Lactente , Estudos Transversais , Programas de Imunização , Sarampo/prevenção & controle , Rubéola (Sarampo Alemão)/prevenção & controle , Vacinação , Vacina contra Sarampo , Imunização
17.
Clin Transl Oncol ; 24(6): 1014-1032, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34990001

RESUMO

Esophageal cancer is a complex gastrointestinal malignancy with an extremely poor outcome. Approximately 80% of cases of this malignancy in Asian countries including India are of squamous cell origin, termed Esophageal Squamous Cell Carcinoma (ESCC).The five-year survival rate in ESCC patients is less than 20%. Neo-adjuvant chemo-radiotherapy (NACRT) followed by surgical resection remains the major therapeutic strategy for patients with operable ESCC. However, resistance to NACRT and local recurrence after initial treatment are the leading cause of dismal outcomes in these patients. Therefore, an alternative strategy to promote response to the therapy and reduce the post-operative disease recurrence is highly needed. At the molecular level, wide variations have been observed in tumor characteristics among different populations, nevertheless, several common molecular features have been identified which orchestrate disease progression and clinical outcome in the malignancy. Therefore, determination of candidate molecular pathways for targeted therapy remains the mainstream idea of focus in ESCC research. In this review, we have discussed the key signaling pathways associated with ESCC, i.e., Notch, Wnt, and Nrf2 pathways, and their crosstalk during disease progression. We further discuss the recent developments of novel agents to target these pathways in the context of targeted cancer therapy. In-depth research of the signaling pathways, gene signatures, and a combinatorial approach may help in discovering targeted therapy for ESCC.


Assuntos
Neoplasias Esofágicas , Carcinoma de Células Escamosas do Esôfago , Linhagem Celular Tumoral , Progressão da Doença , Neoplasias Esofágicas/genética , Neoplasias Esofágicas/terapia , Carcinoma de Células Escamosas do Esôfago/genética , Humanos , Recidiva Local de Neoplasia , Transdução de Sinais
18.
Carcinogenesis ; 32(3): 368-80, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-21177768

RESUMO

Understanding the molecular pathways perturbed in smokeless tobacco- (ST) associated head and neck squamous cell carcinoma (HNSCC) is critical for identifying novel complementary agents for effective disease management. Activation of nuclear factor-kappaB (NF-κB) and cyclooxygenase-2 (COX-2) was reported in ST-associated HNSCC by us [Sawhney,M. et al. (2007) Expression of NF-kappaB parallels COX-2 expression in oral precancer and cancer: association with smokeless tobacco. Int. J. Cancer, 120, 2545-2556]. In search of novel agents for treatment of HNSCC, we investigated the potential of guggulsterone (GS), (4,17(20)-pregnadiene-3,16-dione), a biosafe nutraceutical, in inhibiting ST- and nicotine-induced activation of NF-κB and signal transducer and activator of transcription (STAT) 3 pathways in HNSCC cells. GS inhibited the activation of NF-κB and STAT3 proteins in head and neck cancer cells. This inhibition of NF-κB by GS resulted from decreased phosphorylation and degradation of nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha the inhibitory subunit of NF-κB. Importantly, treatment of HNSCC cells with GS abrogated both ST- and nicotine-induced nuclear activation of NF-κB and pSTAT3 proteins and their downstream targets COX-2 and vascular endothelial growth factor. Furthermore, GS treatment decreased the levels of ST- and nicotine-induced secreted interleukin-6 in culture media of HNSCC cells. In conclusion, our findings demonstrated that GS treatment abrogates the effects of ST and nicotine on activation of NF-κB and STAT3 pathways in HNSCC cells that contribute to inflammatory and angiogenic responses as well as its progression and metastasis. These findings provide a biologic rationale for further clinical investigation of GS as an effective complementary agent for inhibiting ST-induced head and neck cancer.


Assuntos
Carcinoma de Células Escamosas/tratamento farmacológico , Neoplasias de Cabeça e Pescoço/tratamento farmacológico , NF-kappa B/metabolismo , Nicotina/farmacologia , Pregnenodionas/farmacologia , Fator de Transcrição STAT3/metabolismo , Tabaco sem Fumaça/farmacologia , Western Blotting , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patologia , Núcleo Celular/genética , Núcleo Celular/metabolismo , Imunoprecipitação da Cromatina , Commiphora/química , Ciclo-Oxigenase 2/genética , Ciclo-Oxigenase 2/metabolismo , Estimulantes Ganglionares/farmacologia , Neoplasias de Cabeça e Pescoço/metabolismo , Neoplasias de Cabeça e Pescoço/patologia , Humanos , NF-kappa B/genética , RNA Mensageiro/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Fator de Transcrição STAT3/genética , Transdução de Sinais , Células Tumorais Cultivadas
19.
J Nanosci Nanotechnol ; 11(5): 4061-6, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21780406

RESUMO

A facile aqueous solution process was used to synthesize well-crystalline ZnO nanocones at 60 degrees C by using zinc nitrate hexahydrate and sodium hydroxide. The morphological, structural and optical properties of the synthesized ZnO nanocones were investigated by using field emission scanning electron microscopy (FESEM) attached with energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM) equipped with high-resolution (HRTEM), X-ray diffraction (XRD) pattern, Fourier transform infrared (FTIR) spectroscopy and UV-Vis. spectroscopy measurements. The structural and optical properties of the as-synthesized nanocones confirmed a pure and well crystalline product possessing wurtzite hexagonal phase. The as-synthesized ZnO nanocones were used as photocatalyst for the efficient photocatalytic degradation of acridine orange. The acridine orange was almost completely degraded within 105 minutes. This research demonstrates that the simply synthesized ZnO nanostructures could be efficient photocatalyst for the photocatalytic degradation of various organic dyes and chemicals.

20.
Biomed J Sci Tech Res ; 37(1): 29134-29138, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35071995

RESUMO

Stress management is becoming very important part of cancer patient care. Chronic stressors lead to boost tumorigenesis and promote cancer development, recurrence, and drug resistant leading to poor health outcomes. The Hypothalamic-Pituitary-Adrenal (HPA) axis, which is activated by stress, also regulates Hypothalamic-Pituitary-Thyroid (HPT) axis. Stress related changes in immune function and inflammatory response also leads to reduced immune surveillance resulting in tumorigenesis. This article explores the hormonal axis impacted by stress and how chronic stress can lead to poor outcome of a cancer patient.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA