dopa/سرطان

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Levodopa/carbidopa to improve motor function subsequent to brain tumor excision.

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OBJECTIVE The aim of this study was to evaluate the role of levodopa/carbidopa as an augmenting agent to improve motor recovery after brain tumor excision. METHODS This case report is structured as an n-of-1 style trial. The study patient was an outpatient with residual hemiparesis secondary to

Synthesis and in vitro anti-tumor activity of carboranyl levodopa.

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Reactions of closo-1-Me-2-Iodobutyl-1,2-closo-dicarborane, 1-Me-2-I(CH₂)₄-C₂B₁₀H₁₀, with l-dopa methyl ester can produce carboranyl l-dopa methyl esters in 54% yield in the presence of sodium hydroxide. The appended closo-carboranes can be

Antiproliferative effects of new magnetic pH-responsive drug delivery system composed of Fe3O4, CaAl layered double hydroxide and levodopa on melanoma cancer cells.

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In this study, an efficient drug delivery system composed of Fe₃O₄, CaAl layered double hydroxide (LDH) and l-Dopa has been synthesized through hydrogen bonds between l-Dopa and CaAl-LDH encapsulated Fe₃O₄ nanoparticles

Pharmacologic management of bone pain in the cancer patient.

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Cancer patients may experience acute or chronic pain caused by tumor infiltration of pain-sensitive structures or related to surgery, radiation, and chemotherapy. Acute bone pain, with or without associated neurologic deficits resulting from tumor metastasis to bone and contiguous neural structures

Levodopa and dopamine analogs as DNA polymerase inhibitors and antitumor agents in human melanoma.

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Levodopa and dopamine are naturally occurring catecholamines with antitumor activity in several experimental tumor systems. Previous studies suggested that their cytotoxic effect was related in part to their inhibitory effect upon DNA polymerase. We have examined the effects of levodopa, dopamine,

Levodopa and dopamine analogs: dihydroxy and trihydroxybenzylamines as novel quinol antitumor agents in experimental leukemia in vivo.

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Levodopa and dopamine demonstrate significant antitumor activity in several experimental systems. We have prepared the nonneurotoxic dihydroxybenzylamine (DHBA) analogs 2,3-DHBA, 3,4-DHBA, and 2,5-DHBA and the trihydroxy derivatives 2,3,4- and 3,4,5-trihydroxybenzylamine. These analogs demonstrated

Sequential inhibitory effects of antitumor agents related to levodopa and dopamine upon DNA synthetic enzymes.

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Novel antitumor agents related to levodopa and dopamine exhibit a selective and rapid inhibition of DNA synthesis as measured by thymidine incorporation. Our investigations have attempted to determine the biochemical basis of the selective inhibition of tumor cells and in this present study we

[Levodopa and malignant melanoma--case report and review of the literature. A contribution to causal relationship between levodopa and the development of malignant melanoma].

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A 72-years old man with Parkinson's disease was treated with levodopa for 14 years. A superficial spreading melanoma (Breslow depth 1,8 mm Clark level IV) was diagnosed, developing on the back from a pigment lesion which had present for more than 10 years. Other case reports suggest a relationship

Single-step formulation of levodopa-based nanotheranostics - strategy for ultra-sensitive high longitudinal relaxivity MRI guided switchable therapeutics.

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Nanotheranostics (combined diagnosis and therapy) is emerging as an integral part of future therapeutic strategies. However, the development and fabrication of a nanotheranostic module involves multistep processes and always faces formulation challenges. The complexity involved in its multi-step

Modulation of peroxidation in murine melanoma by dietary tyrosine-phenylalanine restriction, levodopa methylester chemotherapy, and sodium ascorbate supplementation.

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Treatment with the drug combination of levodopa methylester and benserazide, supplemental ascorbate, and dietary deficiencies of tyrosine and phenylalanine more than doubled the median survival time of female (C57BL/6 X DBA/2)F1 mice bearing B16 melanoma tumors. The mechanism for this antitumor

Sodium ascorbate enhancement of carbidopa-levodopa methyl ester antitumor activity against pigmented B16 melanoma.

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We report here the single and combined antitumor activity on B16 melanoma in female C57BL/6 X DBA/2F1 mice bearing s.c. tumors of sodium ascorbate, carbidopa-levodopa methyl ester, and dietary phenylalanine and tyrosine deficiency. Groups of 15 mice were fed continuously one of three test diets both

Chemotherapy-induced parkinsonism responsive to levodopa: an underrecognized entity.

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Parkinsonism is a rare neurological complication of cancer treatment. Although individual case reports of this syndrome have been reported, the clinical features and prevalence of this syndrome are unknown. We present 3 patients, encountered over 6 months at one institution, who developed

Effects of hydrogen sulfide-releasing L-DOPA derivatives on glial activation: potential for treating Parkinson disease.

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The main lesion in Parkinson disease (PD) is loss of substantia nigra dopaminergic neurons. Levodopa (L-DOPA) is the most widely used therapy, but it does not arrest disease progression. Some possible contributing factors to the continuing neuronal loss are oxidative stress, including oxidation of

The treatment of acromegaly by transsphenoidal surgery.

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Pituitary tumors were removed transsphenoidally in 32 patients with acromegaly. Ten patients had high prolactin (PL) levels as well as elevated growth hormone (GH) levels. In 24 patients, GH levels were lowered to 5 ng/mL or less and remained low. The PL level was reduced to normal in eight

Antiphospholipid syndrome and dystonia-parkinsonism. A case report.

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Background: Although clinically evident and MRI confirmed, basal ganglia involvement, is usual in primary antiphospholipid syndrome, extrapyramidal disorders such as parkinsonism and dystonia are very rare. We were unable to find any report in the literature on dystonia-parkinsonism in patients with

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