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Non-secretory MM

Vesselina Goranova-Marinova, Marianna Yaneva, Tanya Deneva, Stefan Goranov, Dubravka Mužina Mišić
There is a small but well recognized group of patients with multiple myeloma (MM), characterized by multiple bone lesions and low tumor burden, the so-called macrofocal form of MM (MF-MM). The aim of the study was to analyze the incidence, clinical manifestation, therapeutic outcome and prognosis of patients with MF-MM treated with bortezomib-based therapy and radiotherapy, in comparison to classic MM. There were 148 MM patients treated with bortezomibbased regimens, with 15 (10.1%) of them meeting the criteria for MF-MM...
June 2017: Acta Clinica Croatica
Jonathan Q Purnell, Geoffrey S Johnson, Abdus S Wahed, Chiara Dalla Man, Francesca Piccinini, Claudio Cobelli, Ronald L Prigeon, Bret H Goodpaster, David E Kelley, Myrlene A Staten, Karen E Foster-Schubert, David E Cummings, David R Flum, Anita P Courcoulas, Peter J Havel, Bruce M Wolfe
AIMS/HYPOTHESIS: In this prospective case-control study we tested the hypothesis that, while long-term improvements in insulin sensitivity (SI ) accompanying weight loss after Roux-en-Y gastric bypass (RYGB) would be similar in obese individuals with and without type 2 diabetes mellitus, stimulated-islet-cell insulin responses would differ, increasing (recovering) in those with diabetes but decreasing in those without. We investigated whether these changes would occur in conjunction with favourable alterations in meal-related gut hormone secretion and insulin processing...
February 10, 2018: Diabetologia
Cuiping Fu, Huan Lu, Xu Wu, Jie Liu, Chengying Liu, Zilong Liu, Wei Yuan, Jian Zhou, Shanqun Li
BACKGROUND: Obstructive sleep apnea-hypopnea syndrome (OSAHS) could cause systematic inflammation including pulmonary inflammatory response, whereas the influence of OSAHS in pulmonary clearance ability remains unknown. The main pathophysiological feature of OSAHS is chronic intermittent hypoxia (CIH). The goal of this study is to clarify the airway clearance of particulate matter (PM) in CIH mice, and to explore the potential mechanism. METHODS: Balb/c mice were divided into a CIH group and a control group, exposed to intermittent hypoxia and air chamber, respectively...
2017: American Journal of Translational Research
Megan Murray Dupuis, Sascha A Tuchman
Multiple myeloma (MM) is the second most common hematologic malignancy in the US. It is typically characterized by production of large amounts of defective immunoglobulin (Ig). Diagnosing MM and monitoring treatment response, including eventual relapse, are largely based on sequential measurements of Ig. However, a small subset of MM called non-secretory multiple myeloma (NSMM) produces no detectable Ig. This subset of true NSMM has become even smaller over time, as the advent of the serum free light chain assay has resulted in the majority of NSMM patients being recategorized as light-chain MM - that is, MM cells that produce only the light-chain component of Ig...
2016: OncoTargets and Therapy
Angela López-Gil, Carmen Nanclares, Iago Méndez-López, Carmen Martínez-Ramírez, Cristóbal de Los Rios, J Fernando Padín-Nogueira, Mayte Montero, Luis Gandía, Antonio G García
KEY POINTS: Upon repeated application of short ACh pulses to C57BL6J mouse chromaffin cells, the amperometrically monitored secretory responses promptly decayed to a steady-state level of around 25% of the initial response. A subsequent K(+) pulse, however, overcame such decay. These data suggest that mouse chromaffin cells have a ready release-vesicle pool that is selectively recruited by the physiological neurotransmitter ACh. The ACh-sensitive vesicle pool is refilled and maintained by the rate of Ca(2+) delivery from mitochondria to the cytosol, through the mitochondrial Na(+) /Ca(2+) exchanger (mNCX)...
March 15, 2017: Journal of Physiology
Shelley Fong, John A Chiorini, James Sneyd, Vinod Suresh
Previous studies have shown that localized delivery of the aquaporin-1 (AQP1) gene to the parotid duct can restore saliva flow in minipigs following irradiation-induced salivary hypofunction. The resulting flow rate and electrochemistry of secreted saliva contradicts current understanding of ductal fluid transport. We hypothesized that changes in expression of ion transport proteins have occurred following AQP1 transfection. We use a mathematical model of ion and fluid transport across the parotid duct epithelial cells to predict the expression profile of ion transporters that are consistent with the experimental measurements of saliva composition and secretion rates...
February 1, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
Ricardo De Pascual, Inés Colmena, Lucía Ruiz-Pascual, Andrés Mateo Baraibar, Javier Egea, Luis Gandía, Antonio G García
It is known that the sustained depolarisation of adrenal medullary bovine chromaffin cells (BCCs) with high K(+) concentrations produces an initial sharp catecholamine release that subsequently fades off in spite depolarisation persists. Here, we have recreated a sustained depolarisation condition of BCCs by treating them with the Na(+)/K(+) ATPase blocker ouabain; in doing so, we searched experimental conditions that permitted the development of a sustained long-term catecholamine release response that could be relevant during prolonged stress...
October 2016: Pflügers Archiv: European Journal of Physiology
Sofia M Calado, Liliana S Alves, Sónia Simão, Gabriela A Silva
PURPOSE: In this study, we aimed to understand whether glucose transporter 1 (GLUT1) activity affects the secretion capacity of antiangiogenic factor pigment epithelium-derived factor (PEDF) by the RPE cells, thus explaining the reduction in PEDF levels observed in patients with diabetic retinopathy (DR). METHODS: Analysis of GLUT1 expression, localization, and function was performed in vitro in RPE cells (D407) cultured with different glucose concentrations, corresponding to non-diabetic (5 mM of glucose) and diabetic (25 mM of glucose) conditions, further subjected to normoxia or hypoxia...
2016: Molecular Vision
Ignaz Wessler, Hedwig-Annabel Gärtner, Rosmarie Michel-Schmidt, Christoph Brochhausen, Luise Schmitz, Laura Anspach, Bernd Grünewald, Charles James Kirkpatrick
The worldwide use of neonicotinoid pesticides has caused concern on account of their involvement in the decline of bee populations, which are key pollinators in most ecosystems. Here we describe a role of non-neuronal acetylcholine (ACh) for breeding of Apis mellifera carnica and a so far unknown effect of neonicotinoids on non-target insects. Royal jelly or larval food are produced by the hypopharyngeal gland of nursing bees and contain unusually high ACh concentrations (4-8 mM). ACh is extremely well conserved in royal jelly or brood food because of the acidic pH of 4...
2016: PloS One
Sadia Sultan, Syed Mohammed Irfan, Saira Parveen, Ufaq Taufiq
BACKGROUND: Symptomatic multiple myeloma (MM) is an acquired B-cell malignant proliferation of anti- body secreting plasma cells, characterized by end organ damage due to monoclonal immunoglobulin secretion. The aim of this study wa to determine the stage stratification according to an international scoring system in adult Pakistani MM patients at presentation. MATERIALS AND METHODS: This single centre retrospective study extendedfrom January 2012 to December 2015...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
Arumugam Ramamoorthy Vijayakumar, Epison Prabu Daniel, Raju Ilavarasan, S Venkataraman, S Vijayakumar
BACKGROUND: Several synthetic drugs are useful in the treatment of peptic ulcer, but almost of these drugs are used in prolonging time, it may cause several adverse reactions. However, the herbal medicines are more potent to the treatment and minimize the side effects. OBJECTIVE: To evaluate the methanol extract of Jatropha gossypiifolia Linn. (MEJG) for gastro protective activity against Wistar rats. MATERIALS AND METHODS: Anti-ulcer potency of MEJG (100 and 200 mg/kg, b...
March 2016: Pharmacognosy Research
Zhuo Wang, Guoguang Xia, Ling Lan, Fayong Liu, Yanxun Wang, Baoyue Liu, Yi Ding, Li Dai, Yunjian Zhang
OBJECTIVE: Pleural effusion is rarely observed in patients with multiple myeloma (MM). Myeloma cell infiltration or invasion to the pleura is very rare. This study aimed to investigate the clinical characteristics of pleural effusion in patients with MM. METHODS: We retrospectively reviewed the medical records of patients diagnosed with pleural effusion, MM, and pleural effusion with MM between 2004 and 2014 at Beijing Jishuitan Hospital. The present study included patients with pleural effusion who underwent cytological, bacteriological, biochemical and other testing...
2016: Internal Medicine
Soo Fin Low, Nor Hanani Mohd Tap, Thean Yean Kew, Chai Soon Ngiu, Radhika Sridharan
Multiple myeloma (MM) is characterized by progressive proliferation of malignant plasma cells, usually initiating in the bone marrow. MM can affect any organ; a total of 7 - 18% of patients with MM demonstrate extramedullary involvement at diagnosis. Non-secretory multiple myeloma (NSMM) is a rare variant that accounts for 1 - 5% of all cases of multiple myeloma. The disease is characterized by the absence of monoclonal gammopathy in serum and urine electrophoresis. Our case report highlights the diagnostic challenge of a case of NSMM with extensive extramedullary involvement in a young female patient who initially presented with right shoulder pain and bilateral breasts lumps...
July 2015: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
Signe Harring Østoft
Maturity onset diabetes of the young (MODY) designates monogenic forms of non-autoimmune diabetes characterised by autosomal dominant inheritance, non-insulin dependent diabetes at onset and diagnosis often before 25 years of age. MODY constitutes genetically and clinically heterogeneous forms of diabetes. More than 8 different genes are known to cause MODY, among which hepatocyte nuclear factor 1 alpha (HNF1A) (MODY3) and glucokinase (GCK) (MODY2) mutations are the most common. Both forms of MODY are characterised by specific beta cell dysfunction, with patients with HNF1A-diabetes having a reduced insulin secretory capacity, while patients with GCK-diabetes have a glucose-sensing defect, but preserved insulin secretory capacity...
September 2015: Danish Medical Journal
Steffen S Madsen, Claus Weber, Andreas M Nielsen, Mohammad Mohiseni, Maryline C Bosssus, Christian K Tipsmark, Bertil Borg
Mature three-spined stickleback males use spiggin threads secreted from their kidney to glue together nest material. This requires strongly hypertrophied renal proximal tubular cells, which compromises renal osmoregulatory function during the breeding period. Experimental evidence suggests that the intestine takes over hypotonic fluid secretion at that stage but the mechanism is unexplored. To unravel the molecular mechanism we analyzed and compared transcript levels of several membrane proteins involved in water and salt transport in intestinal and renal tissues, in non-mature males (NM), mature males (MM), and mature females (MF)...
October 2015: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
Saurabh Chhabra, Sandeep Jain, Caroline Wallace, Feng Hong, Bei Liu
BACKGROUND: Multiple myeloma (MM) is a hematologic malignancy that is characterized by the proliferation of abnormal bone marrow plasma cells (BMPC) and overproduction of immunoglobulin or light chains with evidence of end-organ damage such as bone damage, anemia, hypercalcemia, and renal dysfunction. The pathogenesis of MM is closely linked to dysregulated unfolded protein response (UPR) in the endoplasmic reticulum (ER). Constitutive activation of UPR in mice, as demonstrated by transgenic expression of a master UPR transcription factor XBP1s (a UPR-specific splice variant of X-box binding protein 1), causes myeloma...
2015: Journal of Hematology & Oncology
Chiara Mannelli, Anna Z Szóstek, Karolina Lukasik, Claudiopietro Carotenuto, Francesca Ietta, Roberta Romagnoli, Cristina Ferretti, Luana Paulesu, Slawomir Wołczynski, Dariusz Jan Skarzynski
The human endometrium is a fertility-determining tissue and a target of steroid hormones' action. Endocrine disruptors (EDs) can exert adverse effects on the physiological function of the decidua at the maternal-fetal interface. We examined the potential effects of an ED, bisphenol A (BPA), on endometrial maturation/decidualization, receptivity, and secretion of decidual factors (biomarkers). In vitro decidualized, endometrial stromal cells from six hysterectomy specimens were treated with 1  pM-1  μM of BPA, for 24  h and assessed for cell viability and proliferation...
August 2015: Reproduction: the Official Journal of the Society for the Study of Fertility
Graeme J Stasiuk, Florencia Minuzzi, Myra Sae-Heng, Charlotte Rivas, Hans-Paul Juretschke, Lorenzo Piemonti, Peter R Allegrini, Didier Laurent, Andrew R Duckworth, Andrew Beeby, Guy A Rutter, Nicholas J Long
Despite the contribution of changes in pancreatic β-cell mass to the development of all forms of diabetes mellitus, few robust approaches currently exist to monitor these changes prospectively in vivo. Although magnetic-resonance imaging (MRI) provides a potentially useful technique, targeting MRI-active probes to the β cell has proved challenging. Zinc ions are highly concentrated in the secretory granule, but they are relatively less abundant in the exocrine pancreas and in other tissues. We have therefore developed functional dual-modal probes based on transition-metal chelates capable of binding zinc...
March 23, 2015: Chemistry: a European Journal
Ravindranathan Aswati Nair, Chellappan Geethu
Progressive increase in extracellular proteolytic activity with respect to growth was detected in cultures of necrotrophic oomycete Pythium myriotylum Dreschler with maximum activity detected at stationary phase of growth. The secretory protease from P. myriotylum designated, spPm1 was purified to homogeneity giving a single band of 47 kDa molecular mass on non-reducing SDS-PAGE and exhibiting caseinolytic activity in the zymogram. Under reducing conditions, an additional band of 27.0 kDa molecular size observed was subjected to matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF-MS) analysis...
January 2015: World Journal of Microbiology & Biotechnology
Franco Dammacco, Giuseppe Rubini, Cristina Ferrari, Angelo Vacca, Vito Racanelli
Conventional radiographic skeletal survey has been for many years the gold standard to detect the occurrence of osteolytic lesions in patients with multiple myeloma (MM). However, the introduction of more sensitive imaging procedures has resulted in an updated anatomic and functional Durie and Salmon "plus" staging system and has remarkably changed the diagnostic and prognostic approach to this tumor. It is now established that (18)fluorine-fluorodeoxyglucose ((18)F-FDG) positron-emission tomography (PET) combined with low-dose computed tomography (CT), shortly designated PET/CT, exhibits a higher screening and diagnostic sensitivity and specificity over the skeleton X-ray...
February 2015: Clinical and Experimental Medicine
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