OBJECTIVE To offer a reference for the treatment of Mycobacterium iranicum infection by analyzing the diagnosis and management of a single case alongside literature-reported cases. METHODS Through case report and literature reviews， this study synthesized the clinical features， therapeutic regimens， and patient outcomes of those infected with M. iranicum. RESULTS In the single case documented in this report， subsequent to clinical pharmacists’ involvement in the consultation， the patient was prescribed a therapeutic regimen comprising levofloxacin （0.5 g， qd， ivgtt）+Clarithromycin sustained-release tablets （1 000 mg， qd， po） + Ethambutol tablets （0.75 g， qd， po）. The patient exhibited clinical improvement and was discharged after treatment. This article integrated 12 published studies， encompassing 13 patients （7 male and 6 female）， of whom 69.23% were aged ≥50 years. Patients infected with M. iranicum exhibited non-specific clinical manifestations and imaging features， with pulmonary infection as the primary presentation. Antimicrobial susceptibility test revealed that M. iranicum was susceptible to multiple agents， including amikacin， clarithromycin， linezolid， and ethambutol. The three-drug combination therapy was the most frequently employed regimen. In terms of clinical outcomes， there were 9 cases （69.23%） of clinical cure， 3 cases （23.08%） of bacteriological negativity conversion， and 1 case （7.69%） of treatment failure. CONCLUSIONS For M. iranicum infection， a triple-drug therapeutic regimen consisting of three agents with distinct mechanisms of action selected from amikacin， clarithromycin， moxifloxacin， levofloxacin， minocycline， ethambutol， and other relevant drugs may represent a relatively optimal strategy.

Objective To analyze the results of three nucleic acid detection for Mycoplasma pneumoniae(MP)in children,and explore the epidemiological characteristics of MP infection as well as the features of dif-ferent MP nucleic acid detection methods.Methods A total of 8 575 children who visited the hospital from 2018 to 2023 and had results from three different MP nucleic acid detection methods were enrolled as study subjects.The differences in positive detection rates across different years,genders,and ages,as well as the differences and consistency in positive detection rates among the different MP nucleic acid detection methods,were analyzed.Results The positive detection rate of MP in 2020 and 2021 was lower than that in 2018,2019,2022,and 2023(P＜0.001).The positive detection rate of MP in male patients was lower than that in female patients(P＜0.05).The highest positive detection rate of MP was observed in aged 6 to＜12 years,followed by aged 12 to＜18 years and aged 3 to＜6 years,while the lowest rate was found in aged 0 to＜3 years,with a statistically significant difference(P＜0.001).The MP DNA fluorescent PCR method had the highest posi-tive detection rate(23.15％),followed by the MP RNA isothermal amplification method(12.82％),and the MP RNA dual amplification method had the lowest positive detection rate(11.67％),the differences were sta-tistically significant(P＜0.001).The consistency between MP DNA fluorescent PCR method and MP RNA i-sothermal amplification method was relatively the best(Kappa=0.597,P＜0.001),followed by MP RNA i-sothermal amplification method and MP RNA dual amplification method(Kappa=0.564,P＜0.001),the consistency between MP DNA fluorescence PCR and MP RNA double amplification was the worst(Kappa=0.466,P＜0.001).Conclusion The positive rate of MP decreased significantly in 2020 and 2021,and the posi-tive rate of MP was the highest in 6 to＜12 years old.There were significant differences in the positive rate of MP among different nucleic acid detection methods.

Adipose tissue is a readily available source of adult stem cells with multipotent properties suitable for tissue engineering and regenerative medical applications. Peptide hydrogel is a novel biomaterial which provides three-dimensional microenvironments for a variety of cells for tissue grafting. In this study, adipose-derived stem cells (ADSCs) were isolated from rats, seeded into the peptide hydrogel polymer scaffolds and cultured in Neurobasal (NB) media supplemented with B27, basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF). Ten days after the culture, some cells were expanded into clonal populations in which the expression of both Nestin and Brdu was detected but only Brdu expression was detected in the cells that were not expanded into clonal populations. Our results suggested that ADSCs in peptide hydrogel polymer scaffolds can be induced to differentiate into cells capable of expressing the neuron-associated markers, self-renewal and self-propagation.

Objective To study improvement of neural function by stereotaxic transplantation of adipose-derived stem cells (ADSC) into lateral cerebral ventricle after intracerebral hemorrhage in rats and its mechanism. Methods ADSC were cultured and proliferated in vitro, which had been marked with Brdu for 48 h before transplantation. The rat caudate nucleus hemorrhage (ICH) models were divided into 2 groups. ADSC were stereotaxically transplanted into the right lateral ventricles in ADSC group, and equal volume of saline was transplanted into control group. The score of neurological behavior were evaluated at modeling and 1, 3, 7, 14, 28 days after transplantation respectively.Double-staining immunofluorescence technique was used to detect Brdu-positive cells and the differentiation of neurons and astrocytes. In accordance with the instructions of TUNEL kit, cell apoptosis, and the expression of VEGF and angiogenesis were assayed. Results In vitro ADSC expressed undergo osteogenic and adipogenic differentiation. Compared with the control group, ADSC group had better motor function at 3, 7, and 14 days (P＜0. 05). Double-staining immunofluorescence showed mostly grafted Brdu-reactive ADSC had migrated to the hematoma zone, and some survivedand expressed Neun of Gfap. TUNEL analysis revealed that, 3 days after transplantation, the number of apoptotic cells in ADSC group was significantly less than in the control group (P＜0. 05). Three days after transplantation, VEGF expression levels in ADSC group were significantly higher than in the control group (P＜0. 05). Conclusion ADSC stereotaxially transplanted into the lateral ventricle can survive and differentiate into neuron-like cells. ADSC transplantation may reduce apoptosis and secret VEGF to promote the angiogenesis, and improve neural functional in intracerebral hemorrhage rats.

Adipose tissue is a readily available source of adult stem cells with multipotent properties suitable for tissue engineering and regenerative medical applications.Peptide hydrogel is a novel biomaterial which provides three-dimensional microenvironments for a variety of cells for tissue grafting.In this study,adipose-derived stem cells (ADSCs) were isolated from rats,seeded into the peptide hydrogel polymer scaffolds and cultured in Neurobasal (NB) media supplemented with B27,basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF).Ten days after the culture,some cells were expanded into clonal populations in which the expression of both Nestin and Brdu was detected but only Brdu expression was detected in the cells that were not expanded into clonal populations.Our results suggested that ADSCs in peptide hydrogel polymer scaffolds can be induced to differentiate into cells capable of expressing the neuron-associated markers,self-renewal and self-propagation.