4-Carboxyphenylboronic acid-decorated, redox-sensitive rod-shaped nano-micelles fabricated through co-assembling strategy for active targeting and synergistic co-delivery of camptothecin and gemcitabine.

4-Carboxyphenylboronic acid-decorated, redox-sensitive rod-shaped nano-micelles fabricated through co-assembling strategy for active targeting and synergistic co-delivery of camptothecin and gemcitabine. Eur J Pharm Biopharm. 2019 Sep 24;: Authors: Xu Y, Huang Y, Lu W, Liu S, Xiao Y, Yu J Abstract To achieve redox-controlled and tumor active targeting synergistic self-delivery of camptothecin and gemcitabine, redox-sensitive rod-shaped nano-micelles are fabricated through co-assembling between camptothecin-disulfide bond-PEG2000-4-carboxyphenylboronic acid and camptothecin-disulfide bond-gemcitabine conjugate. Most of all, for multidrug resistant cancer cell line MCF-7/ADR which is more resistant against CPT, increasing content of CPT in the formulation is favorable for synergistic effect of CPT and GEM drug combination. Benefiting from simple co-assembling strategy, it is easy and convenient to adjust drug ratio of CPT/GEM to optimize the synergism of drug combination. In addition, nano-micelles fabricated from co-assembling are endowed with both high absolute drug concentration and enhanced colloidal stability, which is helpful to in vivo studies. Transmission electron microscopy observation confirmed the rod-shaped morphology, which is beneficial to cellular internalization, of co-assembled nano-micelles resulting from π-π stacking interactions of CPT moieties and appropriate hydrophilic and hydrophobic interactions during co-assembling. Taking ...
Source: European Journal of Pharmaceutics and Biopharmaceutics - Category: Drugs & Pharmacology Authors: Tags: Eur J Pharm Biopharm Source Type: research

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ConclusionsWomen whose treatment did not conform to NCCN guidelines were not associated with worse outcomes.
Source: The American Journal of Surgery - Category: Surgery Source Type: research
This study reviewed the applicability of laparoscopy in this challenging setting.MethodsRetrospective analysis of patients who underwent trans-abdominal re-operative rectal surgery from 2010-2019 was performed.ResultsSeventy-eight patients [35 females (45%); BMI 25kg/m2) were included. Reasons for reoperation were recurrent cancer in 18 (43%) patients and anastomotic failure in 57 (73%). Twenty-two (28%) had laparoscopic surgery and 4 had attempted laparoscopy converted to laparotomy. A higher success rate was noted for laparoscopy with prior laparoscopic surgery. Benefits of laparoscopy included significant reduction in l...
Source: The American Journal of Surgery - Category: Surgery Source Type: research
CONCLUSION: Primary Signet ring cell carcinoma of the prostate is a rare and aggressive histological variant of adenocarcinomas of the prostate. Treatment is the same as classical adenocarcinoma with an emphasis on aggressive multimodal treatment. PMID: 31797810 [PubMed - in process]
Source: Archivos Espanoles de Urologia - Category: Urology & Nephrology Tags: Arch Esp Urol Source Type: research
Authors: Yalcin S, Kaya E, Ebiloglu T, Akay S, Zor M, Sarıkaya S, Yilmaz S, Bedir S Abstract OBJECTIVES: In this research, we designed a cognitive fusion(CF) prostate biopsy(PB) (CFPB) technique by examining the multiparametric MRI of prostate (MP_MRI-P) images in a smart-phone near the trans-rectal ultrasound (TRUS) device, and examined the results. METHODS: Between January 2011 and January 2017, a total of 344 men who had PB enrolled in this study. Group 1 had a minimum of a 12-core standard TRUS PB (TRUSPB). Group 2 had CFPB while examining the MP_ MRI-P images in a smartphone near the TRUS device. A minimu...
Source: Archivos Espanoles de Urologia - Category: Urology & Nephrology Tags: Arch Esp Urol Source Type: research
Authors: Murray NP, Aedo S, Fuentealba C, Salazar A, Reyes E, Lopez MA, Minzer S Abstract INTRODUCTION: Minimal residual disease (MRD) is that which persists after curative treatment for prostate cancer. It has the potential to grow and cause metastasis. The detection of circulating prostate cells (CPCs) and bone marrow micro-metastasis could represent different sub-types of MRD. OBJECTIVE: To determine biochemical failure free survival and time to failure, the presence of circulating prostate cells and bone marrow micro-metastasis in men treated for low risk prostate cancer. HYPOTHESIS: The presence of MRD...
Source: Archivos Espanoles de Urologia - Category: Urology & Nephrology Tags: Arch Esp Urol Source Type: research
CONCLUSION: Video-endoscopic inguinal lymphadenectomy contributes to less morbidity with a lower- rate of cutaneous complications and less severity. Furthermore, VEIL gives lower hospital stay without changing in initial oncologic outcomes. Although we need longer series to stablish the oncologic long-term results. PMID: 31797801 [PubMed - in process]
Source: Archivos Espanoles de Urologia - Category: Urology & Nephrology Tags: Arch Esp Urol Source Type: research
CONCLUSION: Remote ischemic preconditioning did not modify irisin or troponin I expression, independent of the time of collection. PMID: 31799981 [PubMed - as supplied by publisher]
Source: Jornal Brasileiro de Nefrologia - Category: Urology & Nephrology Tags: J Bras Nefrol Source Type: research
This study supports previous findings of multidrug resistance in commensal strains in rural communities and highlights the increased rates of resistance over time. We recommend studies in larger populations with a longer follow-up. PMID: 31800939 [PubMed - in process]
Source: Revista Peruana de Medicina de Experimental y Salud Publica - Category: International Medicine & Public Health Tags: Rev Peru Med Exp Salud Publica Source Type: research
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Source: Medscape General Surgery Headlines - Category: Surgery Tags: Internal Medicine Article Source Type: news
Today's open access research on tryptophan and its role in age-related immune dysfunction is particularly interesting in the context of ongoing research into the changes that take place in gut microbiota with age. Other recent work has examined the way in which tryptophan production by gut microbes declines precipitously with age, as this is one of a number of compounds produced by bacteria, such as butyrate, indole, and proprionate, that are influential on long term health. It is a slow process, but researchers are uncovering the specific mechanisms linking age-related changes in gut microbe populations with declining hea...
Source: Fight Aging! - Category: Research Authors: Tags: Medicine, Biotech, Research Source Type: blogs
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