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1.
Intern Med ; 2024 Feb 26.
Article En | MEDLINE | ID: mdl-38403774

Cases of herpes zoster ophthalmicus (HZO) complicated by bilateral ophthalmoplegia are rare, and no cases of bilateral third, fourth, or sixth cranial nerve palsies have been reported. Syndrome of inappropriate antidiuretic hormone secretion (SIADH) is a rare complication of HZO. We herein report an 80-year-old Japanese woman with right-sided HZO complicated by meningoencephalitis and discuss the pathogenesis of this condition. She developed bilateral third, fourth, and sixth cranial nerve palsies and SIADH almost simultaneously during treatment for HZO. The bilateral cranial palsy spontaneously resolved within a few months.

2.
Clin Neurol Neurosurg ; 236: 108115, 2024 01.
Article En | MEDLINE | ID: mdl-38246030

BACKGROUND: Endovascular thrombectomy is recognized as a pivotal treatment for acute ischemic stroke due to large vessel occlusion. Prolonged door-to-puncture time correlates with decreased patient independence after acute ischemic stroke. This study aimed to assess whether a streamlined workflow, including nurse recognition of conjugate gaze deviation, could reduce door-to-puncture time in endovascular thrombectomy. METHODS: This study retrospectively reviewed patients with acute ischemic stroke who underwent endovascular thrombectomy between March 2017 and March 2022 and compared a previous workflow with a streamlined workflow implemented in April 2019. In the streamlined workflow, nurses recognized conjugate gaze deviation to identify patients with large vessel occlusions and played a more active role in reducing the door-to-puncture time. We compared time metrics and outcomes, including recanalization status, parenchymal hemorrhage type 2, and favorable outcomes (modified Rankin Scale score 0-2) at three months between the previous and streamlined workflow groups. RESULTS: After the application of the streamlined workflow, the door-to-puncture time was reduced from 76 min to 68 min (p = 0.014), and the number of patients with a door-to-puncture time of less than 60 min increased (15% vs. 36%, p = 0.002). Outcomes including modified thrombolysis in cerebral infarction ≥ 2b (73% vs. 71%, p = 1.000), parenchymal hemorrhage type 2 (7% vs. 2%, p = 0.281), and favorable outcome (33% vs. 34%, p = 1.000) were comparable between the two groups. CONCLUSION: Nurse recognition of conjugate gaze deviation contributed to an 8-minute reduction in the door-to-puncture time, demonstrating the potential benefits of an organized workflow in acute ischemic stroke.


Brain Ischemia , Endovascular Procedures , Ischemic Stroke , Stroke , Humans , Retrospective Studies , Stroke/surgery , Workflow , Treatment Outcome , Thrombectomy , Brain Ischemia/surgery , Punctures , Hemorrhage
3.
Front Plant Sci ; 14: 1275503, 2023.
Article En | MEDLINE | ID: mdl-38023914

Daylength is perceived as a seasonal cue to induce growth-phase transition at a proper time of a year. The core of the mechanism of daylength measurement in angiosperms lies in the circadian clock-controlled expression of regulators of growth-phase transition. However, the roles of the circadian clock in daylength measurement in basal land plants remain largely unknown. In this study, we investigated the contribution of circadian clock to daylength measurement in a basal land plant, the liverwort Marchantia polymorpha. In M. polymorpha, transition from vegetative to reproductive phase under long-day conditions results in differentiation of sexual branches called gametangiophores which harbor gametangia. First, we showed that a widely used wild-type accession Takaragaike-1 is an obligate long-day plant with a critical daylength of about 10 hours and requires multiple long days. Then, we compared the timing of gametangiophore formation between wild type and circadian clock mutants in long-day and short-day conditions. Mutations in two clock genes, MpTIMING OF CAB EXPRESSION 1 and MpPSEUDO-RESPONSE REGULATOR, had no significant effects on the timing of gametangiophore formation. In addition, when M. polymorpha plants were treated with a chemical which lengthens circadian period, there was no significant effect on the timing of gametangiophore formation, either. We next observed the timing of gametangiophore formation under various non-24-h light/dark cycles to examine the effect of phase alteration in circadian rhythms. The results suggest that daylength measurement in M. polymorpha is based on the relative amount of light and darkness within a cycle rather than the intrinsic rhythms generated by circadian clock. Our findings suggest that M. polymorpha has a daylength measurement system which is different from that of angiosperms centered on the circadian clock function.

5.
J Neurol Sci ; 446: 120583, 2023 03 15.
Article En | MEDLINE | ID: mdl-36827810

BACKGROUND AND PURPOSE: We aimed to investigate the relationship between arterial recanalization following endovascular therapy and the susceptibility vessel sign (SVS) length and width on susceptibility-weighted imaging. METHODS: We retrospectively evaluated consecutive patients with anterior circulation ischemic stroke who underwent magnetic resonance imaging preceded endovascular therapy, and measured the SVS length and width. Successful recanalization was defined as expanded thrombolysis in cerebral infarction grade of 2b to 3. Logistic regression analysis was executed to determine the independent predictors of successful recanalization and first-pass reperfusion (FPR) after endovascular therapy. RESULTS: Among 100 patients, successful recanalization and FPR were observed in 77 and 34 patients, respectively. The median SVS length and width were 10.3 mm (interquartile range, 6.8-14.1 mm) and 4.2 mm (interquartile range, 3.1-5.2 mm), respectively. In multivariate logistic regression analysis, SVS width was associated with successful recanalization (odds ratio, 1.88; 95% confidence interval, 1.14-3.07; p = 0.005) and FPR (odds ratio, 1.38; 95% confidence interval, 1.01-1.89; p = 0.039). The optimal cutoff value for the SVS width to predict successful recanalization and FPR were 4.2 mm and 4.0 mm, respectively. CONCLUSIONS: Larger SVS width may predict successful recanalization and FPR following endovascular therapy.


Brain Ischemia , Endovascular Procedures , Stroke , Humans , Stroke/therapy , Retrospective Studies , Magnetic Resonance Imaging/methods , Cerebral Infarction , Treatment Outcome , Brain Ischemia/therapy
6.
Gan To Kagaku Ryoho ; 49(13): 2007-2009, 2022 Dec.
Article Ja | MEDLINE | ID: mdl-36733073

A 71-year-old female was referred to our hospital for abdominal distention and anorexia. Gastrointestinal endoscopy revealed wall thickening of the entire circumference. Abdominal CT scan showed diffuse thickening of the stomach, but there was no obvious metastasis. Scirrhous gastric cancer was strongly suspected, but endoscopic biopsies could not demonstrate malignant features. Staging laparoscopy was performed. There was a small amount of ascites and numerous peritoneal dissemination. She was diagnosed with gastric cancer pStage Ⅳ(pT4a, NX, H0, M1, P1, CY1)without HER2 positivity. We experienced a case of scirrhous gastric cancer in which staging laparoscopy was useful for histological diagnosis and staging.


Laparoscopy , Stomach Neoplasms , Female , Humans , Aged , Stomach Neoplasms/pathology , Peritoneum/pathology , Neoplasm Staging , Endoscopy, Gastrointestinal
7.
Biosci Biotechnol Biochem ; 85(10): 2217-2220, 2021 Sep 22.
Article En | MEDLINE | ID: mdl-34387309

In phytopathogenic fungi, a mutation in the avirulence gene can lead to the breakdown of resistance in the host plant. The nucleotide sequences of the AVR-Pik locus in the strain Ina168 and its spontaneous mutant Ina168m95-5 of Pyricularia oryzae were determined. An AVR-Pik spontaneous deletion mechanism of Ina168m95-5, including multiple homologous recombination events involving repetitive transposable elements, is proposed.


Ascomycota , Disease Resistance , Magnaporthe , Oryza , Plant Diseases
8.
Rinsho Shinkeigaku ; 61(6): 378-384, 2021 Jun 29.
Article Ja | MEDLINE | ID: mdl-34011809

Mutations in the gene encoding the protein O-mannosyl-transferase 2 (POMT2) are known to cause autosomal recessive limb girdle muscular dystrophy type 14 (LGMDR14). No Japanese patient with LGMDR14 has been reported previously. Here, we report three patients with LGMDR14 in one family. The first and second patients harbored a novel homozygous mutation of c.1568A>G, while the third harbored a compound heterozygous mutation of c.1568A>G and c.869C>T. The novel c.1568A>G mutation is classified as likely pathogenic by the guideline of the American College of Medical Genetics and Genomics. Similar to previous cases, all three patients presented difficulty walking and cognitive impairment, and the hamstring muscles were severely affected. Although eye abnormality has only been reported in one previous case, two our patients showed eye abnormalities. As POMT2 enzymatic activity has been demonstrated in the mammalian retina, an eye abnormality may represent a phenotype associated with POMT2 mutation.


Eye Abnormalities , Muscular Dystrophies, Limb-Girdle , Genomics , Humans , Japan , Muscular Dystrophies, Limb-Girdle/genetics , Universities
9.
Curr Biol ; 29(19): 3307-3314.e5, 2019 10 07.
Article En | MEDLINE | ID: mdl-31543452

In angiosperms, the phase transition from vegetative to reproductive growth involves the de-repression of the squamosa promoter-binding-protein-like (SPL) class of transcription factors, which is negatively regulated by the specific microRNAs (miRNAs/miRs) miR156/529 [1]. Non-vascular land plants also undergo growth-phase transition to the reproductive state, but knowledge regarding the controlling mechanisms is limited. Here, we investigate the reproductive transition in the liverwort Marchantia polymorpha, focusing on the roles of miR529c [2-4] and MpSPL2. First, we established mir529c-null mutants using CRISPR/Cas9. Even in the absence of far-red light-supplemented long-day condition, which is usually needed to induce reproductive development [5, 6], the mutant thalli developed sexual reproductive organs (gametangia) and produced gametes. Transgenic plants expressing a miR529-resistant MpSPL2 transgene also showed a similar phenotype of reproductive transition in the absence of inductive far-red light signals. In these mutants and transgenic plants, the MpSPL2 mRNA abundance was elevated. Mpspl2ko mutant plants showed successful gamete development and fertilization, which suggests that MpSPL2 is involved in, but not essential for, sexual reproduction in M. polymorpha. Furthermore, analysis of Mpspl2ko mutant and its complemented lines suggests that MpSPL2 may have a role in promotion of reproductive transition. These findings support the notion that the transition to reproductive development in liverworts is controlled by a system similar to that in angiosperms, and the miR156/529-SPL module has common significance in the control of the vegetative-to-reproductive transition during development in many land plants, including liverworts.


Marchantia/physiology , MicroRNAs/genetics , Plant Proteins/genetics , RNA, Plant/genetics , Transcription Factors/genetics , Base Sequence , Marchantia/genetics , MicroRNAs/metabolism , Plant Proteins/metabolism , RNA, Plant/metabolism , Reproduction , Transcription Factors/metabolism
10.
Nat Commun ; 9(1): 5283, 2018 12 11.
Article En | MEDLINE | ID: mdl-30538242

Evolutionary mechanisms underlying innovation of cell types have remained largely unclear. In multicellular eukaryotes, the evolutionary molecular origin of sperm differentiation is unknown in most lineages. Here, we report that in algal ancestors of land plants, changes in the DNA-binding domain of the ancestor of the MYB transcription factor DUO1 enabled the recognition of a new cis-regulatory element. This event led to the differentiation of motile sperm. After neo-functionalization, DUO1 acquired sperm lineage-specific expression in the common ancestor of land plants. Subsequently the downstream network of DUO1 was rewired leading to sperm with distinct morphologies. Conjugating green algae, a sister group of land plants, accumulated mutations in the DNA-binding domain of DUO1 and lost sperm differentiation. Our findings suggest that the emergence of DUO1 was the defining event in the evolution of sperm differentiation and the varied modes of sexual reproduction in the land plant lineage.


Evolution, Molecular , Germ Cells, Plant/cytology , Plant Proteins/metabolism , Plants/metabolism , Transcription Factors/metabolism , Cell Differentiation , Chlorophyta/classification , Chlorophyta/genetics , Chlorophyta/growth & development , Chlorophyta/metabolism , Germ Cells, Plant/metabolism , Phylogeny , Plant Proteins/genetics , Plants/classification , Plants/genetics , Transcription Factors/genetics
11.
Dent Mater J ; 37(4): 628-633, 2018 Jul 29.
Article En | MEDLINE | ID: mdl-29669951

We compared the accuracy of digital models generated by desktop-scanning of conventional impression/plaster models versus intraoral scanning. Eight ceramic spheres were attached to the buccal molar regions of dental epoxy models, and reference linear-distance measurement were determined using a contact-type coordinate measuring instrument. Alginate (AI group) and silicone (SI group) impressions were taken and converted into cast models using dental stone; the models were scanned using desktop scanner. As an alternative, intraoral scans were taken using an intraoral scanner, and digital models were generated from these scans (IOS group). Twelve linear-distance measurement combinations were calculated between different sphere-centers for all digital models. There were no significant differences among the three groups using total of six linear-distance measurements. When limited to five lineardistance measurement, the IOS group showed significantly higher accuracy compared to the AI and SI groups. Intraoral scans may be more accurate compared to scans of conventional impression/plaster models.


Computer-Aided Design , Dental Impression Materials/chemistry , Dental Impression Technique , Imaging, Three-Dimensional , Models, Dental , Humans , In Vitro Techniques
12.
Plant Signal Behav ; 12(6): e1327495, 2017 06 03.
Article En | MEDLINE | ID: mdl-28532320

Soybean pods are located at the nodes, where they are in the shadow, whereas cowpea pods are located outside of the leaves and are exposed to sunlight. To compare the effects of light quality on pod growth in soybean and cowpea, we measured the length of pods treated with white, blue, red or far-red light. In both species, pods elongated faster during the dark period than during the light period in all light treatments except red light treatment in cowpea. Red light significantly suppressed pod elongation in soybean during the dark and light periods. On the other hand, the elongation of cowpea pods treated with red light markedly promoted during the light period. These results suggested that the difference in the pod set sites between soybean and cowpea might account for the difference in their red light responses for pod growth.


Glycine max/growth & development , Glycine max/radiation effects , Light , Seeds/growth & development , Seeds/radiation effects , Vigna/growth & development , Vigna/radiation effects
13.
J Plant Physiol ; 192: 71-4, 2016 Mar 15.
Article En | MEDLINE | ID: mdl-26871505

It is well known that some nitrogen in the vegetative organs is redistributed to the seeds during seed filling in soybean (Glycine max [L.] Merrill). This redistribution is considered to affect the seed yield of soybean. However, it is still not clear when the nitrogen moves from the vegetative part to the seeds, and the relationship between nitrogen redistribution and leaf senescence has not been clarified. The soybean variety Fukuyutaka was grown in the experimental field of Saga University, Japan from 22 July to 31 October, 2014. After the first flower stage (R1), the plant samples were collected weekly and were separated into leaf, petiole, stem, podshell and seed. The nitrogen concentrations in each plant part were determined. Fresh leaf samples were provided for the determination of soluble protein and autophagy gene GmATG8c expression. The nitrogen that accumulated in the vegetative parts reached its highest level at 60days after sowing (DAS), then began to decrease at 73DAS (R6). This decrease is considered to be the consequence of nitrogen redistribution from the vegetative parts to the seeds. The movement of nitrogen from the vegetative parts to the seeds was estimated to occur at around 73DAS (R6). At this stage, leaf SPAD values, leaf nitrogen, and soluble protein concentrations began to decrease simultaneously, suggesting the onset of leaf senescence. Furthermore, the expression of the autophagy gene GmATG8c in the leaves increased dramatically from 73 to 85DAS, which is the duration of nitrogen redistribution. The results suggest that the nitrogen redistribution from the vegetative parts to the seeds could be one of the initiating factors of leaf senescence, and the autophagy gene GmATG8c was associated with this process.


Gene Expression Regulation, Plant , Glycine max/genetics , Nitrogen/metabolism , Autophagy-Related Protein 8 Family/genetics , Autophagy-Related Protein 8 Family/metabolism , Biomass , Plant Leaves/genetics , Plant Leaves/metabolism , Plant Proteins/genetics , Plant Proteins/metabolism , Plant Stems/genetics , Plant Stems/metabolism , Plants, Genetically Modified , Seeds/genetics , Seeds/metabolism , Glycine max/metabolism
14.
Masui ; 62(6): 690-2, 2013 Jun.
Article Ja | MEDLINE | ID: mdl-23814993

Spontaneous spinal epidural hematoma (SSEH) is an especially rare medical condition in pregnancy. We report a case of SSEH in pregnancy. A 29-year-old woman at 39 weeks of pregnancy was transported to our hospital with sudden back pain, incomplete paresis of the right lower extremity and paresthesia of the left lower extremity. Magnetic resonance imaging showed an epidural hematoma at T5-6 vertebral level. Emergency cesarean section and posterior decompression of the thoracic spinal cord were performed under general anesthesia. Vascular malformation and tumor of the spinal cord were not found, and we diagnosed this case as SSEH. The patient and her baby were discharged on the postoperative day 14 without any complications.


Cesarean Section , Hematoma, Epidural, Spinal/surgery , Pregnancy Complications/surgery , Adult , Anesthesia, General , Emergencies , Female , Humans , Pregnancy
15.
Mol Cancer Ther ; 12(8): 1616-28, 2013 Aug.
Article En | MEDLINE | ID: mdl-23761220

Activation of the epidermal growth factor receptor (EGFR) has been observed in many malignant tumors and its constitutive signal transduction facilitates the proliferation of tumors. EGFR-tyrosine kinase inhibitors, such as gefitinib, are widely used as a molecular-targeting agent for the inactivation of EGFR signaling and show considerable therapeutic effect in non-small cell lung cancers harboring activating EGFR mutations. However, prolonged treatment inevitably produces tumors with additional gefitinib-resistant mutations in EGFR, which is a critical issue for current therapeutics. We aimed to characterize the distinct molecular response to gefitinib between the drug-resistant and drug-sensitive lung adenocarcinoma cells in order to learn about therapeutics based on the molecular information. From the quantitative PCR analysis, we found a specific increase in p14(ARF) expression in gefitinib-sensitive lung adenocarcinoma clones, which was absent in gefitinib-resistant clones. Moreover, mitochondria-targeted p14(ARF) triggered the most augmented apoptosis in both clones. We identified the amino acid residues spanning from 38 to 65 as a functional core of mitochondrial p14(ARF) (p14 38-65 a.a.), which reduced the mitochondrial membrane potential and caused caspase-9 activation. The synthesized peptide covering the p14 38-65 a.a. induced growth suppression of the gefitinib-resistant clones without affecting nonneoplastic cells. Notably, transduction of the minimized dose of the p14 38-65 peptide restored the response to gefitinib like that in the sensitive clones. These findings suggest that the region of p14(ARF) 38-65 a.a. is critical in the pharmacologic action of gefitinib against EGFR-mutated lung adenocarcinoma cells and has potential utility in the therapeutics of gefitinib-resistant cancers.


Antineoplastic Agents/pharmacology , Carcinoma, Non-Small-Cell Lung/genetics , Drug Resistance, Neoplasm/genetics , Lung Neoplasms/genetics , Protein Kinase Inhibitors/pharmacology , Quinazolines/pharmacology , Tumor Suppressor Protein p14ARF/genetics , Amino Acid Sequence , Carcinoma, Non-Small-Cell Lung/metabolism , Cell Line, Tumor , ErbB Receptors/antagonists & inhibitors , ErbB Receptors/genetics , ErbB Receptors/metabolism , Gefitinib , Humans , Intracellular Space/metabolism , Lung Neoplasms/metabolism , Molecular Sequence Data , Mutation , Peptides/chemistry , Peptides/metabolism , Peptides/pharmacology , Protein Transport , Tumor Suppressor Protein p14ARF/chemistry , Tumor Suppressor Protein p14ARF/metabolism
16.
Oncol Lett ; 3(2): 405-410, 2012 Feb.
Article En | MEDLINE | ID: mdl-22740921

S-1, an oral fluoropyrimidine derivative, has been approved for the treatment of non-small cell lung cancer (NSCLC) in Japan. In the present study, the efficacy and safety of S-1 monotherapy for elderly patients with previously treated NSCLC were retrospectively evaluated, and the efficacy of S-1 monotherapy was compared by histopathological type. This retrospective study included 54 patients with advanced or recurrent NSCLC who had received S-1 monotherapy following the failure of previous chemotherapy regimens at our institutes. Patient outcomes were compared based on their age and histopathological type. S-1 was administered orally, twice daily, while the duration and interval were modified according to the medical condition of each patient. The default delivery schedule, the mean number of S-1 cycles, did not differ significantly between the two age groups (<70 and ≥70 years). The rate of therapy discontinuation, schedule modification or dose reduction due to intolerable toxicities or patient refusal was relatively frequent in the older group (40.7 and 55.6% for ages <70 and ≥70 years, respectively; p=0.414), and the incidence of grade 3 anemia was relatively high in the older group (3.7 and 18.5%, respectively; p=0.192). The response rates (13.0 and 4.8%, respectively; p=0.609) and disease control rates (39.1 and 33.3%, respectively; p=0.761) did not differ significantly between the two age groups. According to histopathological type, the disease control rate was significantly higher in adenocarcinoma (57.9%) compared to non-adenocarcinoma (20.0%, p=0.013). Thus, S-1 monotherapy may be equally effective and tolerated in patients <70 years and those ≥70 years. Additionally, adenocarcinoma may have a higher disease control rate than non-adenocarcinoma.

17.
Case Rep Dermatol ; 3(2): 181-5, 2011 May.
Article En | MEDLINE | ID: mdl-21941483

Infantile myofibromatosis is a rare fibrous tumor of infancy. The cutaneous solitary type has typically an excellent prognosis. However, histologically, it is important to rule out leiomyosarcoma, which has a poor prognosis. The low frequency of mitosis was definitive for a diagnosis of infantile myofibromatosis. We present a cutaneous solitary-type case of infantile myofibromatosis. Following incisional biopsy, the tumor remitted spontaneously.

18.
Jpn J Ophthalmol ; 55(2): 103-6, 2011 Mar.
Article En | MEDLINE | ID: mdl-21400053

PURPOSE: To investigate the relationship between relative lens position (RLP) and appositional closure in eyes with narrow angles. METHODS: Ultrasound biomicroscopy (UBM) was used to measure anterior chamber depth (ACD) and lens thickness (LT), and the IOLMaster to measure axial length (AL). The number of quadrants with appositional closure was assessed by UBM under dark conditions. The RLP was calculated thus: RLP = 10 × (ACD + 0.5 LT) /AL. RESULTS: This study comprised 30 consecutive patients (30 eyes) with narrow-angle eyes defined as Shaffer grade 2 or lower and without peripheral anterior synechiae (24 women, 6 men; mean age ± SD, 67.3 ± 10.4 years; range, 42-87 years). Under dark conditions, 66.7% of the eyes with narrow angles showed appositional closure in at least one quadrant. Of the various ocular biometric parameters, only the RLP significantly decreased with appositional closure in at least one quadrant (P = 0.005). CONCLUSION: A decrease in the RLP can be predictive of appositional closure for narrow-angle eyes under dark conditions.


Anterior Chamber/diagnostic imaging , Axial Length, Eye/diagnostic imaging , Glaucoma, Angle-Closure/diagnostic imaging , Glaucoma, Angle-Closure/physiopathology , Lens, Crystalline/diagnostic imaging , Microscopy, Acoustic , Adult , Aged , Aged, 80 and over , Biometry/methods , Darkness , Female , Humans , Male , Middle Aged , Retrospective Studies
19.
Gan To Kagaku Ryoho ; 38(1): 129-31, 2011 Jan.
Article Ja | MEDLINE | ID: mdl-21368474

A 54-year-old man was admitted to our hospital because of a nonproductive cough and back pain.Chest computed tomography (CT) showed an anterior mediastinal mass, multiple patchy lesions in both lung fields and left-sided pleural effusion. CT-guided biopsy specimens from the anterior mediastinal mass and pleural effusion samples were shown to be T-cell lymphoblastic lymphoma. Treatment with JALSG-ALL202 protocol resulted in diminishing all lesions remarkably. This is a rare case of T-cell lymphoblastic lymphoma with pulmonary infiltration.


Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Lung Neoplasms/diagnostic imaging , Lymphoma, T-Cell/diagnostic imaging , Biopsy , Humans , Lung Neoplasms/drug therapy , Lung Neoplasms/secondary , Lymphoma, T-Cell/drug therapy , Lymphoma, T-Cell/pathology , Male , Neoplasm Invasiveness , Tomography, X-Ray Computed
20.
Intern Med ; 49(17): 1857-62, 2010.
Article En | MEDLINE | ID: mdl-20823645

OBJECTIVE: The novel anthracycline agent amrubicin, has been approved in Japan to treat small and non-small cell lung cancers (SCLC and NSCLC). The present study evaluates the toxicity and effect of amrubicin especially in elderly patients with previously treated lung cancer. PATIENTS AND METHODS: This retrospective study analyzed data from 51 patients (<70 years of age, n=29; > oor =70 years of age, n=22) with lung cancer (NSCLC, n=21; SCLC, n=30) who were treated with amrubicin at our hospital, between July 2003 and October 2009. All patients had recurrent or refractory lung cancer after one or more chemotherapy regimens. We compared the outcomes of patients younger and older than 70 years of age. Amrubicin (30-40 mg/m(2)/day) was infused depending on patient performance status and laboratory data over a period of 5 minutes on days 1-3, with courses repeated at intervals of at least 3 weeks. The dose was modified according to myelosuppression. RESULTS: The mean number of treatment cycles, mean dose and mean interval of amrubicin administration did not significantly differ between patients aged <70 and > or =70 years. The rate of hematological toxicities (> or = Grade 3) also did not significantly differ between the two age groups (leukopenia, 48.3% and 59.1% for age <70 and > or =70 years, p=0.573; neutropenia, 65.5% vs. 77.3%, p=0.536; anemia, 20.7% vs. 22.7%, p=1.000; thrombocytopenia, 13.8% vs. 31.8%, p=0.173). The incidence of grade 2-4 non-hematological toxicities also did not significantly differ between the groups. The response rate of SCLC and disease control rate of NSCLC were similar in the younger and older groups. CONCLUSION: Amrubicin monotherapy might be equally tolerated by elderly and younger patients. Further studies are needed to investigate the benefit of amrubicin monotherapy among elderly patients with previously treated lung cancer.


Anthracyclines/therapeutic use , Antineoplastic Agents/therapeutic use , Carcinoma, Non-Small-Cell Lung/drug therapy , Carcinoma, Small Cell/drug therapy , Lung Neoplasms/drug therapy , Salvage Therapy , Topoisomerase II Inhibitors/therapeutic use , Age Factors , Aged , Aged, 80 and over , Anthracyclines/adverse effects , Antineoplastic Agents/adverse effects , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Female , Gastrointestinal Diseases/chemically induced , Hematologic Diseases/chemically induced , Humans , Male , Middle Aged , Recurrence , Retrospective Studies , Topoisomerase II Inhibitors/adverse effects , Treatment Outcome
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