Case Contrast moderate\induced transient leukopenia is very rare. leukopenia.1, 2 Agranulocytosis is a life\threating condition that occurs due to decreased absolute neutrophil counts of 500/L.3 Here, we report a case of a 73\year\old man diagnosed with contrast media\induced transient leukopenia. Case At 10:08 am, a 73\year\old\man underwent an abdominal contrast\enhanced computed tomography (CT) scan using non\ionic iodinated contrast medium, as a follow\up procedure for chronic pancreatitis. The procedure was completed uneventfully and the CT showed no significant findings. One hour after the procedure, he was admitted to the emergency department for chest discomfort. The patient had a medical history of chronic pancreatitis and allergy to a different contrast medium with symptoms of only nausea that occurred 6?years ago. Thus, we changed the contrast medium and used them 10 times. No symptoms occurred before the present case. The patient’s initial findings were: height, 173?cm; weight, 77.0?kg; blood pressure, 83/52?mmHg; heart rate, 40?b.p.m.; temperature, 36.1C; respiratory rate, 18/min; SpO2, 98% with oxygen delivered through a face mask (5?L/min); and a Glasgow Coma Scale rating of E3V5M6. A physical exam revealed regular bilateral Slc7a7 air Fasudil HCl inhibitor database admittance without the wheezing or rhonchi. The full total results of his cardiovascular and neurological examinations were normal. His belly on examination made an appearance normal and didn’t show any pores and skin eruptions. The medical course of the individual is demonstrated in Fig.?1. Open up in another window Shape 1 Clinical span of a 73\yr\old guy with comparison press\induced transient leukopenia. The shape depicts adjustments in the patient’s white bloodstream cell count number (WBC), total neutrophil count number, and body’s temperature over time. WBC count was decreased. A fever was had by The individual temp of 38.9C at 4?h after entrance to the crisis department (ED). His WBC count improved. The individual was discharged 2?times later on. KT, k?rpertemperatur; PCT, procalcitonin. The lab findings are demonstrated in Desk?1. Both chest and electrocardiogram X\ray didn’t expose any significant findings. The patient’s total white bloodstream cell, neutrophil, and lymphocyte matters had been 930, 232, and 678/L, respectively (Fig.?2A). His hemoglobin platelet and amounts matters were normal. Primarily, anaphylaxis was suspected because of his health background and cardiovascular symptoms. Therefore, the patient was presented with 5?mg chlorpheniramine malcinic acidity, 20?mg famotidine, and 125?mg methylprednisolone, and admitted to a healthcare facility for follow\up. Open up in another window Fasudil HCl inhibitor database Shape 2 HematoxylinCeosin staining (10) of peripheral bloodstream cells from a 73\yr\old guy with comparison press\induced transient leukopenia. A, Neutrophils aren’t within the peripheral bloodstream in the proper period of entrance towards the crisis division. B, Regular neutrophils can be found in the peripheral bloodstream 12?days later on. Table 1 Lab testing of the 73\yr\old guy with comparison press\induced transient leukopenia at entrance to the crisis division (ED), 1?day time before entrance, and 12?times after entrance thead valign=”best” th align=”still left” valign=”best” rowspan=”1″ colspan=”1″ /th th align=”still left” valign=”best” rowspan=”1″ colspan=”1″ ?1?day time /th th align=”remaining” valign=”best” rowspan=”1″ colspan=”1″ ED /th th align=”remaining” valign=”best” rowspan=”1″ colspan=”1″ +12?days /th /thead Peripheral bloodRed blood cells, 104/L398?370395Hemoglobin, g/dL13.7?14.013.9Hematocrit, %41.039.540.1Platelets, 104/L14.513.117.8White blood cells, /L4,6909305,050Band, %ND1.052.9Segmented, %ND24.01.8Eosinophils, %ND1.01.8Basophils, %ND0.00.6Monocytes, %ND1.07.1Lymphocytes, %ND73.037.6Blood chemistryTotal protein, g/dL7.16.37.0Albumin, g/dL4.53.94.2Urea nitrogen, mg/dL9.210.511.2Creatinine, mg/dL0.830.850.89Aspartate aminotransferase, IU/L232220Alanine aminotransferase, IU/L212223Total bilirubin, mg/dLND1.11.4Alkaline phosphatase, IU/LND168175Lactic acid dehydrogenase, U/LND163155Sodium, mEq/L141137140Potassium, mEq/L3.73.94.2Chloride, mEq/L105105106Glucose, mg/dL126165140Serological testC\reactive protein test, mg/dLND0.040.15Coagulation Prothrombin time, sND11.511.9Activated partial thromboplastin time, sND23.230.8D\dimer, g/mLND7.30.5IL\6, pg/mLND2.9NDTNF\, pg/mLND0.97NDAnti\neutrophil antibodiesNDNegativeND Open in a separate window IL\6, interleukin\6; TNF\, tumor necrosis factor\; ND, not done laboratory finding. Shortly after admission, the patient complained of chills and had a temperature of 37.6C. His total white blood cell count was 1,160/L and the neutrophil count was 557/L. Approximately 2? h after admission the patient developed a fever and his body temperature was 38.9C. We obtained samples of bloodstream, sputum, and urine for tradition. Subsequent entire\body CT scans and a upper body X\rays didn’t reveal any disease foci. The individual was identified as having neutropenic fever and treated with cefepime. At 3:00?am the very next day, his temperatures returned on track. In addition, his white blood vessels cell rely got retrieved. Microbial culture outcomes were adverse for infection. As a result, we diagnosed the individual with idiosyncratic transient leukopenia that was induced from the comparison moderate. Interleukin\6, tumor necrosis element\ (TNF\), and anti\neutrophil antibody results were unremarkable. The health of the individual improved on Fasudil HCl inhibitor database day time two after hospitalization and he was discharged (Fig.?2B). The individual has not skilled a recurrence in the 1?season since this event. Dialogue You can find few reviews of comparison medium\induced severe leukopenia. We undertook an intensive search of released function using PubMed.
Tag Archives: SLC7A7
Recombination is important for the repair of DNA damage and for
Recombination is important for the repair of DNA damage and for chromosome segregation during meiosis; it has also been shown to participate in the regulation of cell proliferation. the yeast epistasis group are required for both homologous recombination and the repair of double strand-breaks (DSBs) (10). Mutations in these genes result in severe cellular sensitivity to ionizing radiation and alkylating brokers (e.g., methyl methanesulfonate [MMS]), reduced spontaneous and DNA damage-induced mitotic recombination, and the production of inviable spores in meiotic recombination (36). Biochemical data suggest that some products of the epistasis group (Rad51, Rad52, Rad54, Rad55, Rad57, and replication protein A [RPA]) assemble-disassemble on DNA. The Rad51 protein is a key component of this complex. It has significant sequence and functional similarity to RecA protein, the crystal structure of which has been determined (47). The two proteins share a region of 30% identity, comprising amino acid residues 154 to 374 of Rad51 and 33 to 240 of RecA, corresponding to a large middle domain essential for recombination. Indeed, Rad51 protein also possesses some of the RecA functional activities, e.g., binding of single-stranded DNA (ssDNA) and double-stranded DNA, ATP hydrolysis, formation of nucleoprotein filaments, and formation of heteroduplex DNA (51, 54). Rad51 interacts with itself, with Rad52 (9, 43), with Rad54 (7, 17), and with Rad55, which in turn associates with Rad57 (15, 18). In accordance with the biochemical and two-hybrid data obtained for these interactions, there are also many genetic data supporting their cellular relevance (7, 11, 41). The importance of the N-terminal a part of Rad51 has been exhibited in Rad51 self-association and in the conversation with Rad52 (31). The details of these two interactions have not been explored further. Recently, much attention has been paid to the biochemical function of Rad51 and its associated proteins, Rad51, Rad52, Rad54, and the Rad55-Rad57 heterodimer. Rad52 shows annealing activities (32, 50) and promotes the exchange of RPA for Rad51 protein on ssDNA (28, 52), and human Rad52 binds double-strand breaks (56). Rad54 belongs to a SWI2/SNF2 protein family, whose users modulate chromatin structure (57). Biochemical studies show that Rad54 forms a dimer or oligomer on DNA and promotes Rad51-dependent homologous DNA pairing through changes in DNA double-helix conformation (37). Both and are sequence homologs of genes is usually conserved in a wide variety of eukaryotic organisms, suggesting their importance to eukaryotic cellular function in general. An interesting feature of Rad51p is usually its crucial role in the mouse, where the mutant displays early embryonic lethality (24) but also impairs spontaneous and DSB-induced conservative recombination without affecting cell viability (22). The physical conversation of HsRad51 with several tumor suppressor genes, namely, p53, BRCA1, and BRCA2, implies its possible role(s) in tumorigenesis (26, 48). Here we describe a new approach to dissect protein interactions within the multiprotein complex and the application of this technique to the 63902-38-5 yeast recombination-repair complex. By this strategy, mutations launched into one component of a two-hybrid conversation pair can be readily and simultaneously screened for effects on interactions with each of several desired partner proteins, thus directly exposing different patterns of effects and defining the residues involved. We have used this approach to investigate the interactions of yeast Rad51 with Rad52, Rad54, Rad55, and Rad51 itself by isolating mutants which abolish specific interactions within the Rad51 SLC7A7 complex without affecting others. Such analysis was not possible using the conventional two-hybrid system. Localization of these mutations in a homology model of the Rad51 protein and the Rad51 filament 63902-38-5 reveals possible conversation interfaces. The mutants defective in specific interactions also show a decrease in MMS-induced DSB repair, exposing new data around the importance of protein-protein interactions in recombination and repair. Possible compensatory mutations that activate protein interactions were also recognized. This mutagenic two-hybrid strategy can be used to dissect other multiprotein complexes or mechanisms and can help us understand the development of compensatory mutations as well as define conversation regions de novo. MATERIALS AND METHODS Media and plasmids. Yeast 63902-38-5 and bacterial media, as well as all the standard yeast genetic methods, were used as explained previously (2). 5-Fluoroorotic acid medium was prepared by the method of Boeke et al. (5). The vectors pGBT9 and pGAD10 have been described elsewhere (6). Coding sequences of were amplified from genomic clones by PCR using the primers scRAD51-FOR plus scRAD51-REV, scRAD52-FOR plus scRAD52-REV, and scRAD54-FOR plus scRAD54-REV, respectively (Table ?(Table1).1). The PCR products were digested with mutations, were constructed by inserting the complementation studies is usually a derivative of W303 (gene was replaced.