Exophiala Jeanselmei Infection in a Patient with Two Primary Malignancies

1997 ◽  
Vol 1 (4) ◽  
pp. 229-231
Author(s):  
Diana M. Chen

Background: Dematiaceous fungi are emerging as an important pathogen, particularly in individuals on immunosuppressive medications. These fungi produce brown to black pigment and are responsible for a wide spectrum of diseases, including superficial infections of the skin and eye and, uncommonly, deep infections involving the central nervous system and internal organs. Objective: We present a male patient with localized, cutaneous Exophiala jeanselmei infection. Methods: We review the literature and present a brief discussion of phaeohyphomycotic infections, their clinical features, and their treatment modalities. Results: Workup of our patient revealed an underlying hepatic lymphoma and pulmonary squamous cell carcinoma. Conclusions: Phaeohyphomycotic infections, although uncommon, are increasingly recognized as important pathogens in patients who are immunologically compromised as a result of long-term steroid or other immunosuppressive therapy. Infections by these organisms in healthy-appearing individuals should prompt one to consider an immunodeficiency state and appropriate workup should be performed.

2020 ◽  
Vol 16 (8) ◽  
pp. 1022-1043
Author(s):  
Imran Khan ◽  
Sadaf Mahfooz ◽  
Mustafa A. Hatiboglu

Background: Glioblastoma is one of the most aggressive and devastating tumours of the central nervous system with short survival time. Glioblastoma usually shows fast cell proliferation and invasion of normal brain tissue causing poor prognosis. The present standard of care in patients with glioblastoma includes surgery followed by radiotherapy and temozolomide (TMZ) based chemotherapy. Unfortunately, these approaches are not sufficient to lead a favorable prognosis and survival rates. As the current approaches do not provide a long-term benefit in those patients, new alternative treatments including natural compounds, have drawn attention. Due to their natural origin, they are associated with minimum cellular toxicity towards normal cells and it has become one of the most attractive approaches to treat tumours by natural compounds or phytochemicals. Objective: In the present review, the role of natural compounds or phytochemicals in the treatment of glioblastoma describing their efficacy on various aspects of glioblastoma pathophysiology such as cell proliferation, apoptosis, cell cycle regulation, cellular signaling pathways, chemoresistance and their role in combinatorial therapeutic approaches was described. Methods: Peer-reviewed literature was extracted using Pubmed, EMBASE Ovid and Google Scholar to be reviewed in the present article. Conclusion: Preclinical data available in the literature suggest that phytochemicals hold immense potential to be translated into treatment modalities. However, further clinical studies with conclusive results are required to implement phytochemicals in treatment modalities.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yi Wen ◽  
Nazila Salamat-Miller ◽  
Keethkumar Jain ◽  
Katherine Taylor

AbstractDirect delivery of therapeutic enzymes to the Central Nervous System requires stringent formulation design. Not only should the formulation design consider the delicate balance of existing ions, proteins, and osmolality in the cerebrospinal fluid, it must also provide long term efficacy and stability for the enzyme. One fundamental approach to this predicament is designing formulations with no buffering species. In this study, we report a high concentration, saline-based formulation for a human sulfatase for its delivery into the intrathecal space. A high concentration formulation (≤ 40 mg/mL) was developed through a series of systematic studies that demonstrated the feasibility of a self-buffered formulation for this molecule. The self-buffering capacity phenomenon was found to be a product of both the protein itself and potentially the residual phosphates associated with the protein. To date, the self-buffered formulation for this molecule has been stable for up to 4 years when stored at 5 ± 3 °C, with no changes either in the pH values or other quality attributes of the molecule. The high concentration self-buffered protein formulation was also observed to be stable when exposed to multiple freeze–thaw cycles and was robust during in-use and agitation studies.


2017 ◽  
Vol 84 (3) ◽  
pp. 353-356 ◽  
Author(s):  
Anna Rosati ◽  
Alessandra Cosi ◽  
Massimo Basile ◽  
Alice Brambilla ◽  
Renzo Guerrini ◽  
...  

Glia ◽  
2014 ◽  
Vol 62 (10) ◽  
pp. 1659-1670 ◽  
Author(s):  
Karelle Bénardais ◽  
Viktoria Gudi ◽  
Lijie Gai ◽  
Jasmin Neßler ◽  
Vikramjeet Singh ◽  
...  

2014 ◽  
Vol 33 (04) ◽  
pp. 347-351
Author(s):  
Pedro Tadao Hamamoto Filho ◽  
Vitor César Machado ◽  
Flávio Ramalho Romero ◽  
Luis Gustavo Ducati ◽  
Marco Antônio Zanini ◽  
...  

AbstractBrain metastases are the most common tumors within the central nervous system. Recent advances on diagnosis and treatment modalities have allowed for longer survival. In this paper we review the indication of each modality of treatment: surgery, whole brain radiotherapy and stereotactic radiosurgery, as also recent advances on the knowledge of brain metastases biology that may improve the use of medical treatment and chemotherapy.


1971 ◽  
Vol 177 (1048) ◽  
pp. 307-320 ◽  

Many pollutants, even when present in the water in concentrations well below lethal levels, may cause marked changes in the physiology and behaviour of fish. The work reported deals mainly with salmonids. The responses to insecticides are particularly interesting. Of fundamental interest is the suggestion that DDT seems to act by interfering with the normal thermal acclimation mechanism(s), probably within the central nervous system. The results are not without practical significance. Some responses, including those induced by heavy metal ions from mining wastes, may cause long-term ecological changes of consequence.


1995 ◽  
Vol 268 (6) ◽  
pp. R1343-R1358 ◽  
Author(s):  
V. L. Brooks ◽  
J. W. Osborn

The importance of the sympathetic nervous system in short-term regulation of arterial pressure is well accepted. However, the question of whether neural systems participate in long-term control of pressure has been debated for decades and remains unresolved. The principal argument against such a control system is that arterial baroreceptors adapt to sustained changes in arterial pressure. In addition, denervation of baroreceptors has minimal to no effect on basal levels of arterial pressure chronically. This argument assumes, however, that baroreceptors provide the primary chronic feedback signal to the central nervous system. An alternate model is proposed in which circulating hormones, primarily arginine vasopressin and angiotensin II, provide a long-term afferent signal to the central nervous system via binding to specific receptors in central sites lacking a blood-brain barrier (circumventricular organs). Studies suggest that the release of the hormones and the sympathetic response to alterations in their plasma concentrations are nonadaptive but may be gated by baroreceptor input. Evidence that this "hormonal-sympathetic reflex" model may explain the long-term alterations in sympathetic activity in response to chronic salt depletion and salt loading as well as congestive heart failure is presented. Finally, the role of an impaired hormonal sympathetic reflex in hypertension, specifically salt-dependent hypertension, is discussed.


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