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1.
J Infect Chemother ; 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38754836

RESUMO

Melioidosis is an infectious disease caused by Burkholderia pseudomallei. People infected with B. pseudomallei experience fever and skin changes, pneumonia, abscesses, and septic shock that could cause death. Hemophagocytic lymphohistiocytosis is a severe inflammatory syndrome due to the excess activation of macrophages and T cells. We report a 50-year-old hypertensive and diabetic male patient presented with high-grade intermittent fever with loss of appetite and weight loss for two months and a history of jaundice, backache and swelling of both feet for 15 days. Blood and bone marrow culture grew Burkholderia pseudomallei. A liver biopsy revealed Kupffer cell hyperplasia and hemophagocytosis. The patient was treated with an injection of dexamethasone 4mg intravenous three times a day for five days and tapered over 15 days with ceftazidime 2 gm intravenous three times a day for six weeks. Early suspicion in the diagnosis of hemophagocytic lymphohistiocytosis in septicemia can prevent severe complications, even death.

2.
Emerg Radiol ; 2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38797776

RESUMO

BACKGROUND: Splenic sequestration crisis is a potentially fatal complication of sickle cell disease, mainly seen in young children. Only a few case series describe the acute splenic sequestration crisis in adults and its management, which primarily consists of supportive care and, in some cases, splenectomy. Splenic artery embolization has seldom been described in sickle cell disease. This is probably the first case in which an adult with sickle cell disease presented with an acute splenic sequestration crisis was managed successfully through splenic artery embolization. RESULTS: This 22-year-old female, a known case of sickle cell disease, presented with severe pain in the abdomen and low-grade intermittent fever for two days, secondary to an acute splenic sequestration crisis. The diagnosis of acute splenic sequestration was made based on clinical and blood parameters, ultrasonography, and computed tomography. Even with adequate supportive care and blood transfusions, the patient's condition worsened with a rapid fall in the hemoglobin and total platelet count. Considering splenectomy to be a high-risk procedure for this patient, a decision of rescue splenic artery embolization was taken, which was successful. CONCLUSION: Splenic artery embolization may be considered a lifesaving procedure in patients with acute splenic sequestration, where the risk of splenectomy can be high. Adequate post-procedure supportive care is vital for preventing complications.

3.
Arch Microbiol ; 205(5): 216, 2023 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-37129727

RESUMO

Entomopathogenic fungal biocides are preferred for environment friendly sustainable management of insect pests due to their host specificity and harmlessness to non-target insects. Plant growth promotion (PGP) functions of the entomofungi are also important attributes but hitherto insignificantly explored. Therefore, virulence of 17 natural fungal entomocides (Cordyceps, Beauveria, Metarhizium, Nomuraea, Fusarium, Verticillium, Trichoderma and Paecilomyces spp.) were evaluated for pathogenicity against five rice pests (brown plant hopper (Nilaparvata lugens) and green leaf hopper (Nephotettix virescens) nymphs, leaf folder (Cnaphalocrosis medinalis) and yellow stem borer (Scirpophaga incertulas) larvae and swarming caterpillar (Spodoptera mauritia), respectively), and PGP traits of the potent leaf folder pathogens. Among the fungi, only the leaf folder pathogens (3 isolates each of Beauveria and Metarhizium spp.) infected > 50% (80-90%) larvae but other fungi were ineffective as infected < 50% (0-47%) insects. Besides, the leaf folder pathogens exhibited diverse PGP traits such as organic/inorganic phosphate solubilization (104.7-236.4 µg/ml), and siderophore, ammonia, hydrogen cyanide (HCN), indole production etc. Restriction fragment length polymorphism (RFLP), random amplified polymorphic DNA (RAPD), simple sequences repeat (SSR) and internal transcribed spacers (ITS) analysis ascertained strain identity and genetic (inter and intra-specific) diversity among the potent biocides Beauveria and Metarhizium spp. The virulent natural fungal pathogens of rice pests with polyvalent PGP traits may be prospected for rice growth promotion and biocontrol of leaf folder.


Assuntos
Beauveria , Hemípteros , Metarhizium , Mariposas , Animais , Técnica de Amplificação ao Acaso de DNA Polimórfico , Insetos/microbiologia , Larva , Polimorfismo Genético , Beauveria/genética , Metarhizium/genética , Controle Biológico de Vetores
4.
J Cell Biochem ; 123(8): 1327-1339, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35644013

RESUMO

Gluconeogenesis is one of the key processes through which the kidney contributes to glucose homeostasis. Urinary exosomes (uE) have been used to study renal gene regulation noninvasively in humans and rodents. Recently, we demonstrated fast-fed regulation of phosphoenolpyruvate carboxykinase (PEPCK), the rate-limiting enzyme for gluconeogenesis, in human uE. The regulation was impaired in subjects with early insulin resistance. Here, we studied primary human proximal tubule cells (hPT) and human uE to elucidate a potential link between insulin resistance and fast-fed regulation of renal PEPCK. We demonstrate that fasted hPTs had higher PEPCK and insulin receptor substrate-2 (IRS2) mRNA and protein levels, relative to fed cells. The fast-fed regulation was, however, attenuated in insulin receptor knockdown (IRKO) hPTs. The IRKO was confirmed by the blunted insulin-induced response on PEPCK, PGC1α, p-IR, and p-AKT expression in IRKO cells. Exosomes secreted by the wild-type or IRKO hPT showed similar regulation to the respective hPT. Similarly, in human uE, the relative abundance of IRS-2 mRNA (to IRS1) was higher in the fasted state relative to the fed condition. However, the fast-fed difference was absent in subjects with early insulin resistance. These subjects had higher circulating glucagon levels relative to subjects with optimal insulin sensitivity. Furthermore, in hPT cells, glucagon significantly induced PEPCK and IRS2 gene, and gluconeogenesis. IR knockdown in hPT cells further increased the gene expression levels. Together the data suggest that reduced insulin sensitivity and high glucagon in early insulin resistance may impair renal gluconeogenesis via IRS2 regulation.


Assuntos
Gluconeogênese , Resistência à Insulina , Glucagon/metabolismo , Gluconeogênese/fisiologia , Humanos , Insulina/metabolismo , Rim/metabolismo , Fígado/metabolismo , Fosfoenolpiruvato Carboxiquinase (ATP)/genética , Fosfoenolpiruvato Carboxiquinase (ATP)/metabolismo , RNA Mensageiro/metabolismo , Receptor de Insulina/genética , Receptor de Insulina/metabolismo
5.
Artigo em Inglês | MEDLINE | ID: mdl-38391380

RESUMO

ABSTRACT: Mucinous carcinomas arising within an ovarian dermoid tumor are rare. Most of the cases reported in the literature show morphological features resembling an appendiceal mucinous neoplasm. They exhibit CK7-/CK20+ immunophenotype similar to carcinomas of the lower gastrointestinal tract. In this report, we have described a case of a well-differentiated mucinous carcinoma arising within a mature cystic teratoma. The mucinous carcinoma showed a spectrum of morphological patterns, including cystadenoma-like areas, proliferative/borderline areas, villous adenoma-like areas, and areas of invasive carcinoma. In addition, our case showed some unusual findings, namely, diffuse CK7 positivity, associated pseudomyxoma peritonei, and metastasis to lungs. These features were not demonstrated in any of the previously reported cases. Our case shows that the teratomatous mucinous neoplasm of the ovary may show CK7+/CK20+/CDX2 + immunoprofile making it immunohistochemically indistinguishable from a primary ovarian mucinous neoplasm or a metastatic mucinous carcinoma of the lower gastrointestinal tract.

6.
J Clin Res Pediatr Endocrinol ; 16(2): 192-199, 2024 05 31.
Artigo em Inglês | MEDLINE | ID: mdl-38347684

RESUMO

Objective: To estimate the proportion and risk factors of non-thyroidal illness (NTI) in children with congenital heart disease (CHD) with congestive heart failure (CHF). Methods: This study enrolled children (6 weeks to 60 months age) with CHD and CHF. The clinical profile and disease severity, derived from the Pediatric Early Warning Score (PEWS) was recorded. Baseline blood samples were taken within 24 hours of hospitalization and evaluated for free tri-iodothyronine (fT3), free thyroxine (fT4), thyroid stimulating hormone (TSH), N-terminal pro-brain natriuretic peptide (NT pro-BNP) and reverse T3. Results: A total of 80 (64 acyanotic CHD) children of median (interquartile range) age 5 (2.5, 8.0) months were enrolled. NTI was seen in 37 (46%) of whom 27 had low fT3 levels. The proportion of NTI was highest in children with severe disease (20/30), than moderate (4/9) or mild disease (13/41) (p=0.018). Ten (27%) patients with NTI died compared to 2 (4.7%) without NTI with unadjusted odds ratio (OR) [95% confidence interval (CI)] 7.593 (1.54, 37.38); p=0.006. After adjusting for NTI, shock and NT-pro-BNP levels, PEWS was the only significant predictor of mortality (OR: 1.41, 95% CI: 1.03, 1.92; p=0.032). Linear regression for fT3 identified a significant relationship with log NT-BNP [beta -3.541, (95% CI: -1.387, -0.388)] and with TSH [beta 2.652 (95% CI: 0.054, 0.383)]. The cutoff (area under the curve, 95% CI) that predicted mortality were fT4 <14.5 pmol/L (0.737, 0.60, 0.88), fT3/rT3 index <1.86 pg/ng (0.284, 0.129, 0.438) and NT pro-BNP >3725 pg/mL (0.702; 0.53, 0.88). Conclusion: NTI was present in a significant proportion of children with CHD and CHF. fT3 level was significantly associated with NTBNP levels and thus severity of CHF.


Assuntos
Insuficiência Cardíaca , Índice de Gravidade de Doença , Humanos , Insuficiência Cardíaca/sangue , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/diagnóstico , Feminino , Masculino , Pré-Escolar , Lactente , Cardiopatias Congênitas/sangue , Cardiopatias Congênitas/complicações , Fatores de Risco , Peptídeo Natriurético Encefálico/sangue , Síndromes do Eutireóideo Doente/sangue , Síndromes do Eutireóideo Doente/epidemiologia , Síndromes do Eutireóideo Doente/diagnóstico , Fragmentos de Peptídeos/sangue , Tiroxina/sangue , Tri-Iodotironina/sangue , Tireotropina/sangue , Biomarcadores/sangue , Prognóstico
7.
Cureus ; 16(5): e60887, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38910704

RESUMO

Moebius syndrome is a rare disease characterized by unilateral or bilateral facial nerve palsies with/without other cranial nerve palsy. It manifests clinically with facial muscle weakness and/or ophthalmoplegia and can be associated with other physical anomalies such as various limb deformities and orofacial malformation. Herein, we have described the clinical and radiological features of Moebius syndrome in a 9-year-old female child who presented with left-side facial palsy and bilateral complete horizontal gaze palsy.

8.
J Neurosci Rural Pract ; 15(1): 126-129, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38476428

RESUMO

Fenestrated aneurysm at vertebrobasilar junction (VBJ) is very rare and can occur due to non-fusion of longitudinal neural axis forming basilar artery in the early stage of embryonic life. Due to defects in tunica media and weakness in its wall, these fenestrations are more likely to develop an aneurysm. Various treatment strategies are required for the management of these types of aneurysms including simple coiling, stent-assisted coiling, balloon remodeling technique, and more recently kissing flow diverters. Herein, we report the case of ruptured fenestrated VBJ aneurysm which was managed successfully with novel reverse Y stenting with coiling.

9.
J Clin Imaging Sci ; 14: 3, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38469176

RESUMO

Objectives: Neural crest cells (NCCs) are transient structures in the fetal life in vertebrates, which develop at the junctional site of the non-neural and neural ectoderm, sharing a common developmental origin for diverse diseases. After Epithelio-mesenchymal (EMT) of the NCCs within the neural tube, delamination of NCCs occurs. After delamination, the transformation of these cells into various cell lineages produces melanocytes, bones, and cartilage of the skull, cells of the enteric and peripheral nervous system. After the conversion, these cells migrate into various locations of the entire body according to the cell lineage. Abnormalities in neural crest (NC) formation and migration result in various malformations and tumors, known as neurocristopathy. Material and Methods: Herein, this case series describes a single-center experience in cephalic NC disorders over the past 3 years, including 17 cases of varying composition (i.e., vascular, dysgenetic, mixed, and neoplastic forms) involving the brain and occasionally skin, eyes, and face of the patients. Results: In our study of 17 patients with cephalic NC disease, 6 (35.3%) patients had vascular form, 5 (29.4%) had dysgenetic form, 4 (23.5%) had mixed form, and 2 (11.7%) had neoplastic form. Brain involvement in the form of vascular or parenchyma or both vascular and parenchymal was seen in all of our patients (100%), skin in 6 (35.3%) patients, eye in 2 (11.7%), and face in 1 (5.9%) patient. Treatment was planned according to the various manifestations of the disease. Conclusion: Neural crest diseases (NCDs) are a rare and under-recognized group of disorders in the literature and may have been under-reported due to a lack of awareness regarding the same. More such reporting may increase the repertoire of these rare disorders such that clinicians can have a high degree of suspicion leading to early detection and timely counseling and also improve preventive strategies and help in developing new drugs for these disorders or prevent them.

10.
J Gastrointest Cancer ; 55(2): 829-837, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38315330

RESUMO

BACKGROUND: Gastric cancer is a global health concern with varying clinical outcomes. This study aims to investigate the influence of preoperative Body Mass Index (BMI) on survival in patients who underwent curative resection for gastric cancer in Eastern India. METHODS: Data from a prospectively maintained Surgical Oncology database were analysed for patients who underwent curative resection for primary gastric adenocarcinoma between May 2016 and March 2022. Patients with incomplete data were excluded. Preoperative BMI was categorised into three groups: Underweight (< 18.5 kg/m2), Normal (18.5-22.9 kg/m2), and Overweight/Obese (=23 kg/m2). Clinicopathological details, short-term outcomes, and long-term oncological outcomes were assessed. Statistical analysis included survival estimates, Cox proportional hazard models, and subgroup analysis. RESULT: Of 162 patients, 145 met the inclusion criteria. Patients were predominantly male (68%) with middle or lower socioeconomic status. No significant differences amongst BMI groups were observed in performance score, tumour grade, clinical stage, or short-term outcomes. Postoperative complications and 30-day mortality were similar. However, underweight patients had poorer 4-year disease-free survival (DFS) compared to overweight/obese patients (14.3% vs. 39.7%, p = 0.03). Overweight/obese patients showed significantly better 4-year overall survival (OS) than underweight patients (47.8% vs. 20.4%, p = 0.03). CONCLUSIONS: In Eastern Indian gastric cancer patients undergoing curative resection, preoperative higher BMI (overweight/obese) was associated with better long-term survival. Understanding these findings could guide tailored interventions to improve outcomes in this population.


Assuntos
Índice de Massa Corporal , Neoplasias Gástricas , Humanos , Neoplasias Gástricas/cirurgia , Neoplasias Gástricas/mortalidade , Neoplasias Gástricas/patologia , Masculino , Feminino , Pessoa de Meia-Idade , Índia/epidemiologia , Idoso , Gastrectomia/estatística & dados numéricos , Complicações Pós-Operatórias/epidemiologia , Obesidade/complicações , Adenocarcinoma/cirurgia , Adenocarcinoma/mortalidade , Adenocarcinoma/patologia , Taxa de Sobrevida , Adulto , Período Pré-Operatório , Magreza/complicações , Estudos de Coortes , Prognóstico
11.
J Craniofac Surg ; 24(2): e166-7, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23524825

RESUMO

Trifid mandibular condyle is an exceedingly rare entity with only 5 cases reported to date. The etiology of the disorder is unknown, though like bifid mandibular condyle, a correlation with prior trauma is usually seen. We present a case of a 6-year-old child who presented with severe restriction of movements at the temporomandibular joint, with a history of trauma 2 years back. Imaging revealed bilateral temporomandibular joint ankylosis with trifid and bifid mandibular condyles.


Assuntos
Anquilose/diagnóstico por imagem , Côndilo Mandibular/diagnóstico por imagem , Côndilo Mandibular/lesões , Transtornos da Articulação Temporomandibular/diagnóstico por imagem , Acidentes de Trânsito , Criança , Humanos , Imageamento Tridimensional , Masculino , Tomografia Computadorizada por Raios X
12.
Cureus ; 15(1): e34073, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36843765

RESUMO

A left gastric artery pseudoaneurysm is a rare complication of pancreatitis and is associated with significant morbidity and mortality. We report a 14-year-old male with severe abdominal pain and a palpable upper abdominal mass, earlier diagnosed as chronic idiopathic calcifying pancreatitis, and awaiting surgical intervention. Computed tomography showed a pseudocyst and a pseudoaneurysm in the lesser sac near the left gastric artery. The patient underwent successful angiographic coiling of the left gastric artery and definitive pancreatic surgery weeks thereafter. The early detection and interventional radiologic management of the vascular complication averted a life-threatening hemorrhage without emergency surgery in a pediatric patient.

13.
Cureus ; 15(8): e44107, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37750130

RESUMO

Giant cell arteritis, or temporal arteritis, is a chronic granulomatous vasculitis that affects large- and medium-sized arteries. An elderly male of 61 years presenting with chronic headaches for the past one year had been misdiagnosed as having migraine because of the similarity in symptoms. General examination revealed the presence of bilateral large, tortuous temporal arteries without any scalp tenderness, diminished arterial pulsations, or skin changes over the dilated arteries. A temporal artery biopsy revealed giant cell arteritis and was treated with steroids. This case report highlights the importance of considering secondary headaches, especially giant cell arteritis, in the differential diagnosis of new-onset headaches or worsening headaches in the elderly.

14.
World J Diabetes ; 14(7): 1049-1056, 2023 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-37547592

RESUMO

Gluconeogenesis is an endogenous process of glucose production from non-carbohydrate carbon substrates. Both the liver and kidneys express the key enzymes necessary for endogenous glucose production and its export into circulation. We would be remiss to add that more recently gluconeogenesis has been described in the small intestine, especially under high-protein, low-carbohydrate diets. The contribution of the liver glucose release, the net glucose flux, towards systemic glucose is already well known. The liver is, in most instances, the primary bulk contributor due to the sheer size of the organ (on average, over 1 kg). The contribution of the kidney (at just over 100 g each) to endogenous glucose production is often under-appreciated, especially on a weight basis. Glucose is released from the liver through the process of glycogenolysis and gluconeogenesis. Renal glucose release is almost exclusively due to gluconeogenesis, which occurs in only a fraction of the cells in that organ (proximal tubule cells). Thus, the efficiency of glucose production from other carbon sources may be superior in the kidney relative to the liver or at least on the level. In both these tissues, gluconeogenesis regulation is under tight hormonal control and depends on the availability of substrates. Liver and renal gluconeogenesis are differentially regulated under various pathological conditions. The impact of one source vs the other changes, based on post-prandial state, acid-base balance, hormonal status, and other less understood factors. Which organ has the oar (is more influential) in driving systemic glucose homeostasis is still in-conclusive and likely changes with the daily rhythms of life. We reviewed the literature on the differences in gluconeogenesis regulation between the kidneys and the liver to gain an insight into who drives the systemic glucose levels under various physiological and pathological conditions.

15.
BMJ Case Rep ; 16(8)2023 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-37586757

RESUMO

Osteopetrosis is a rare genetic disorder resulting in increased bone density and decreased bone remodelling. Bone expansion results in the crowding of neural foramina causing cranial nerve compression. Here, we describe a female infant in her mid infancy presented with no eye contact since birth, and abdominal distension for 2 months. On CT evaluation, sclerotic bones with bilateral optic canal narrowing were present. A crowded posterior fossa with Arnold Chiari type I malformation was seen on MRI evaluation, suggesting a rare association of osteopetrosis with Arnold Chiari's malformation.


Assuntos
Malformação de Arnold-Chiari , Osteopetrose , Osteosclerose , Humanos , Feminino , Malformação de Arnold-Chiari/complicações , Malformação de Arnold-Chiari/diagnóstico por imagem , Osteopetrose/complicações , Osteopetrose/diagnóstico por imagem , Imageamento por Ressonância Magnética , Coluna Vertebral , Fossa Craniana Posterior
16.
Sultan Qaboos Univ Med J ; 23(4): 551-555, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38090247

RESUMO

Hereditary haemorrhagic telangiectasia (HHT) is an autosomal dominant disorder characterised by vascular dysplasia. Hepatic vascular malformations (VMs) range from small telangiectases to significant vascular shunting. Here we report two cases of HHT. Case 1 had diffuse ectasia of the hepatic artery along its intrahepatic and extrahepatic course with a hepatic arterial aneurysm. Case 2 presented with ileal and hepatic telangiectases. Knowledge of these vascular variants is indispensable for clinicians and radiologists in aiding diagnosis and surgical and interventional management.


Assuntos
Telangiectasia Hemorrágica Hereditária , Humanos , Telangiectasia Hemorrágica Hereditária/diagnóstico por imagem , Artéria Hepática/diagnóstico por imagem
17.
J Obstet Gynaecol India ; 73(Suppl 2): 264-267, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38143972

RESUMO

Background: Uterine arterial pseudoaneurysm (UAP) is a rare cause of vaginal bleeding. Usually, UAP follows cesarean section, uterine curettage, vaginal delivery, or cervical conization and must be considered in the differential diagnosis. Here we report a very unusual case of UAP causing intra-abdominal and vaginal bleeding after cervical cerclage and its successful management through the endovascular route. Case Presentation: This 30-year-old P2L1A2 woman presented with vaginal bleeding after 7 days following hysterotomy for termination of pregnancy. At 16 weeks of her index pregnancy, she underwent cervical cerclage for cervical insufficiency, followed by an emergency hysterotomy at 20 weeks for profuse vaginal bleeding after failed medical management. On ultrasound and contrast-enhanced computed tomography (CECT), uterine dehiscence and a cervical pseudoaneurysm were detected. Dehiscence was repaired surgically, and pseudoaneurysm was successfully managed by uterine artery embolization. Conclusion: UAP is an uncommon cause of vaginal bleeding; however, it should be considered in the differential diagnosis of a woman with unusual vaginal bleeding, particularly in the postpartum or postoperative setting like cesarean section, uterine curettage, cervical conization, or cerclage. Endovascular uterine artery embolization is a minimally invasive, effective, preferred, and safe method for managing UAP.

18.
Life Sci ; 322: 121621, 2023 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-37001803

RESUMO

AIM: Exosomes, as a nanocarrier for the co-delivery of biologicals and small anticancer molecules is yet in its infancy. Herein, we investigated hUCBMSC derived exosomes as a biogenic nanocarrier for the co-delivery of tumor suppressor miR-125a and microtubule destabilizing Docetaxel (DTX) to target the proliferative and migratory aggressiveness of the murine TNBC 4T1 cells. MAIN METHODS: In this study, hUCBMSCs from the human umbilical cord blood cells (hUCB) were successfully transfected with miR-125a. Thereafter, DTX was encapsulated into both non-transfected and transfected exosomes by optimized mild sonication-incubation technique. The anticancer efficiency of hUCBMSC Exo-DTX and miR-125a Exo-DTX was compared by MTT and morphometric assay. The prominent anti-metastatic behaviour of the latter was confirmed by in-vitro wound healing and transwell invasion assay. Further, the synergistic effect of miR-125a and DTX was confirmed by F-actin and nuclear degradation by confocal and FESEM assay. KEY FINDINGS: hUCBMSC exosomes exhibited DTX payload of 8.86 ± 1.97 ng DTX/ µg exosomes and miRNA retention capacity equivalent to 12.31 ± 5.73 %. The co-loaded formulation (miR-125a Exo-DTX) exhibited IC50 at 192.8 ng/ml in 4T1 cells, which is almost 2.36 folds' lower than the free DTX IC50 (472.8 ng/ml). Additionally, miR-125a Exo-DTX treatment caused wound broadening upto 6.14±0.38 % while treatment with free DTX and miR-125a exosomes alone caused 18.71±4.5 % and 77.36±10.4 % of wound closure respectively in 36 h. miR-125a Exo-DTX treatment further exhibited significantly reduced invasiveness of 4T1 cells (by 3.5 ± 1.8 %) along with prominent cytoskeletal degradation and nuclear deformation as compared to the miR-125a exosomes treated group. The miR-125a expressing DTX loaded exosomal formulation clearly demonstrated the synergistic apoptotic and anti-migratory efficiency of the miR-125a Exo-DTX. SIGNIFICANCE: The synergistic anticancer and anti-metastatic effect of miR-125a Exo-DTX was observed due to presence of both DTX and miR-125a as the cargo of hUCBMSC derived exosomes.


Assuntos
Exossomos , Células-Tronco Mesenquimais , MicroRNAs , Humanos , Animais , Camundongos , Docetaxel/farmacologia , Exossomos/metabolismo , Sangue Fetal/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Células-Tronco Mesenquimais/metabolismo , Cordão Umbilical/metabolismo
19.
Front Endocrinol (Lausanne) ; 14: 1157194, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37251672

RESUMO

Kidney disease is prevalent in diabetes. Urinary exosomes (uE) from animal models and patients with Diabetic nephropathy (DN) showed increased levels of miRs with reno-protective potential. We examined whether urinary loss of such miRs is associated with their reduced renal levels in DN patients. We also tested whether injecting uE can leverage kidney disease in rats. In this study (study-1) we performed microarray profiling of miRNA in uE and renal tissues in DN patients and subjects with diabetes without DN (controls). In study-2, diabetes was induced in Wistar rats by Streptozotocin (i.p. 50 mg/kg of body weight). Urinary exosomes were collected at 6th, 7th and 8th weeks, and injected back into the rats (100ug/biweekly, uE-treated n=7) via tail vein on weeks 9 and 10. Equal volume of vehicle was injected in controls (vehicle, n=7). uE from the human and rat showed the presence of exosome-specific proteins by immunoblotting. Microarray profiling revealed a set of 15 miRs having high levels in the uE, while lower in renal biopsies, from DN, compared to controls (n=5-9/group). Bioinformatic analysis also confirmed the Renoprotective potential of these miRs. Taqman qPCR confirmed the opposite regulation of miR-200c-3p and miR-24-3p in paired uE and renal biopsy samples from DN patients (n=15), relative to non-DN controls. A rise in 28 miRs levels, including miR-200c-3p, miR-24-3p, miR-30a-3p and miR-23a-3p were observed in the uE of DN rats, collected between 6th-8th weeks, relative to baseline (before diabetes induction). uE- treated DN rats had significantly reduced urine albumin-to-creatinine ratio, attenuated renal pathology, and lower miR-24-3p target fibrotic/inflammatory genes (TGF-beta, and Collagen IV), relative to vehicle treated DN rats. In uE treated rats, the renal expression of miR-24-3p, miR-30a-3p, let-7a-5p and miR-23a-3p was increased, relative to vehicle control. Patients with diabetic nephropathy had reduced renal levels, while higher uE abundance of miRs with reno-protective potential. Reverting the urinary loss of miRs by injecting uE attenuated renal pathology in diabetic rats.


Assuntos
Diabetes Mellitus Experimental , Nefropatias Diabéticas , Exossomos , MicroRNAs , Humanos , Ratos , Animais , Nefropatias Diabéticas/genética , Nefropatias Diabéticas/metabolismo , Exossomos/metabolismo , Diabetes Mellitus Experimental/complicações , Diabetes Mellitus Experimental/metabolismo , Ratos Wistar , MicroRNAs/metabolismo
20.
Int J Surg Pathol ; : 10668969231199165, 2023 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-37715635

RESUMO

Solitary fibrous tumor (SFT) is a rare mesenchymal neoplasm known to occur at various soft tissue and visceral locations. Kidney is a rarely reported site for these tumors. Most of the SFTs described in the kidney exhibit a classical CD34-positive patternless spindle cell histology. Focal round cell morphology is seldom reported. Herein, we describe a 48-year-old male patient with renal SFT. This tumor had pure round cell morphology with a CD34-/STAT6+ immunophenotype. Fluorescent in situ hybridization and a multiplexed sequencing assay performed on an Illumina® HiSeq 4000 platform revealed NAB2 and STAT6 gene rearrangement. Renal tumors with round cell morphology are diagnostically challenging and SFT is not often considered in the differential diagnosis of a round cell tumor of the kidney. Moreover, a CD34-negative profile can be rather confounding while diagnosing such lesions. In such scenarios, a strong nuclear STAT6 immunostaining is extremely helpful in clinching the diagnosis. SFT should always be considered in the differential diagnosis of round cell tumors of the kidney due to significant diagnostic and therapeutic implications.

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