Dynamic changes in gut dysbiosis and metabolomic dysregulation are associated with immune-complex glomerulonephritis(ICGN).However,an in-depth study on this topic is currently lacking.Herein,we report an ICGN model to...Dynamic changes in gut dysbiosis and metabolomic dysregulation are associated with immune-complex glomerulonephritis(ICGN).However,an in-depth study on this topic is currently lacking.Herein,we report an ICGN model to address this gap.ICGN was induced via the intravenous injection of cationized bovine serum albumin(c-BSA)into Sprague-Dawley(SD)rats for two weeks,after which mycophenolate mofetil(MMF)and losartan were administered orally.Two and six weeks after ICGN establishment,fecal samples were collected and 16S ribosomal DNA(rDNA)sequencing and untargeted metabolomic were conducted.Fecal microbiota transplantation(FMT)was conducted to determine whether gut normali-zation caused by MMF and losartan contributed to their renal protective effects.A gradual decline in microbial diversity and richness was accompanied by a loss of renal function.Approximately 18 genera were found to have significantly different relative abundances between the early and later stages,and Marvinbryantia and Allobaculum were markedly upregulated in both stages.Untargeted metabolomics indicated that the tryptophan metabolism was enhanced in ICGN,characterized by the overproduction of indole and kynurenic acid,while the serotonin pathway was reduced.Administration of losartan and MMF ameliorated microbial dysbiosis and reduced the accumulation of indoxyl conjugates in feces.FMT using feces from animals administered MMF and losartan improved gut dysbiosis by decreasing the Firmicutes/Bacteroidetes(F/B)ratio but did not improve renal function.These findings indicate that ICGN induces serous gut dysbiosis,wherein an altered tryptophan metabolism may contribute to its pro-gression.MMF and losartan significantly reversed the gut microbial and metabolomic dysbiosis,which partially contributed to their renoprotective effects.展开更多
Post infectious Glomerulonephritis (PIGN) in renal allograft is a rare entity. Only a few Cases have been described in the literature. The post streptococcal glomerulonephritis is the classic example in native kidney....Post infectious Glomerulonephritis (PIGN) in renal allograft is a rare entity. Only a few Cases have been described in the literature. The post streptococcal glomerulonephritis is the classic example in native kidney. A wide variety of organism has been associated with PIGN in renal allograft such as Staphylococcus, Cytomegalovirus and Polyomavirus. We describe one case of Infection associated glomerulonephritis due to Echericha Coli, developed 5 years after kidney transplantation, in 47 years old female patient. The Clinical presentation was characterized by a peripheral edema and high blood pressure, and biological tests showed a nephrotic syndrome, an acute kidney injury, a consumption of Complement fractions. The renal biopsy revealed a diffuse endocapillary cell proliferation with preponderant deposits of C3. Total recovery was achieved 4 months after Methyprednisolone pulse and Cyclophasphamid with antimicrobial treatment.展开更多
BACKGROUND Glomerulopathy with fibrillary deposits is not uncommon in routine nephropathology practice,with amyloidosis and fibrillary glomerulonephritis being the two most frequently encountered entities.Renal amyloi...BACKGROUND Glomerulopathy with fibrillary deposits is not uncommon in routine nephropathology practice,with amyloidosis and fibrillary glomerulonephritis being the two most frequently encountered entities.Renal amyloid heavy and light chain(AHL)is relatively uncommon and its biopsy diagnosis is usually limited to cases that show strong equivalent staining for a single immunoglobulin(Ig)heavy chain and a single light chain,further supported by mass spectrometry(MS)and serum studies for monoclonal protein.But polyclonal light chain staining can pose a challenge.CASE SUMMARY Herein we present a challenging case of renal AHL with polyclonal and polytypic Ig gamma(IgG)staining pattern by immunofluorescence.The patient is a 62-yearold Caucasian male who presented to an outside institution with a serum creatinine of up to 8.1 mg/dL and nephrotic range proteinuria.Despite the finding of a polyclonal and polytypic staining pattern on immunofluorescence,ultrastructural study of the renal biopsy demonstrated the presence of fibrils with a mean diameter of 10 nm.Congo red was positive while DNAJB9 was negative.MS suggested a diagnosis of amyloid AHL type with IgG and lambda,but kappa light chains were also present supporting the immunofluorescence staining results.Serum immunofixation studies demonstrated IgG lambda monoclonal spike.The patient was started on chemotherapy.The chronic renal injury however was quite advanced and he ended up needing dialysis shortly after.CONCLUSION Tissue diagnosis of AHL amyloid can be tricky.Thorough confirmation using other available diagnostic techniques is recommended in such cases.展开更多
BACKGROUND Primary immunoglobulin(Ig)-associated mesangiocapillary glomerulonephritis(Ig-MCGN)is an immune complex glomerulonephritis of unknown etiology.It is a common cause of chronic kidney disease in developing co...BACKGROUND Primary immunoglobulin(Ig)-associated mesangiocapillary glomerulonephritis(Ig-MCGN)is an immune complex glomerulonephritis of unknown etiology.It is a common cause of chronic kidney disease in developing countries.There is limited data available on renal and patient outcomes of this disease from developing countries.AIM To determine the short-term renal and patient outcomes of adults with a tissueconfirmed diagnosis of primary Ig-MCGN at a single center in Pakistan.METHODS A retrospective cohort study of adult patients was conducted on biopsy-proven Ig-MCGN cases diagnosed between 1998 and 2019 at the Sindh Institute of Urology and Transplantation,Karachi,Pakistan.Secondary causes were excluded.The primary endpoint was renal survival without end-stage kidney disease(ESKD)or mortality.The secondary endpoint was the rate of remission during the 2-year follow-up period.Survival curves were made with the use of Kaplan-Meier estimates.RESULTS A total of 163 patients were included in the study and their mean follow-up duration was 29.45 months±21.28 months.Among baseline characteristics,young age,lower estimated glomerular filtration rate,requirement of kidney replacement therapy,presence of crescents,and severity of interstitial fibrosis and tubular atrophy were found to have a significant association with renal outcomes.The renal outcomes were negatively correlated with the presence of hypertension,level of complements,and degree of proteinuria.In all,63(37.4%)patients were treated with steroids and 21(13%)received combination therapy(cyclophosphamide with steroids).At 2 years,124(76.07%)patients were in complete remission or partial remission[56(34.3%)and 68(41.71%),respectively],while 32(19.63%)patients progressed to ESKD and 7(4.29%)patients died.CONCLUSION The outcomes of primary Ig-MCGN are guarded in Pakistan and require further prospective studies to improve our understanding of this relatively common disease so that more personalized treatment approaches can be developed.展开更多
Introduction: Glomerular damage during Gougerot-Sjgren syndrome is much rarer than interstitial damage, and is essentially extra-membranous and membrano-proliferative glomerulonephritis. Observation: We report the cas...Introduction: Glomerular damage during Gougerot-Sjgren syndrome is much rarer than interstitial damage, and is essentially extra-membranous and membrano-proliferative glomerulonephritis. Observation: We report the case of a 44-year-old woman with primary Sjgrens syndrome, confirmed by clinical dryness syndrome, positive anti-SSA and anti-SSB antibodies, and a salivary gland biopsy revealing grade 4 lymphocytic sialadenitis according to CHISHOLMs classification. Later, the patient developed nephrotic syndrome, along with hypertension. Renal function remained normal with a creatinine level of 9.3 mg/l, and hematuria was absent. Only antinuclear antibodies tested positive, while anti-PLA2R antibodies were negative. A renal biopsy was performed, which was complicated on the same day by hemodynamic instability with hematuria. Renal CT scan with contrast injection revealed a posterior perirenal hematoma without contrast extravasation. Additionally, bilateral renal vein thrombosis was incidentally discovered, suggesting extramembranous glomerulonephritis. The patients hemodynamic status stabilized after fluid resuscitation with isotonic saline solution (0.9%), without the need for blood transfusion. Renal biopsy confirmed extramembranous glomerulonephritis with interstitial fibrosis and minimal tubular atrophy. The initial etiological assessment was negative. The patient was started on oral corticosteroids, angiotensin-converting enzyme inhibitors, and therapeutic anticoagulation for renal vein thrombosis. The patients condition improved, with the disappearance of the syndrome and spontaneous regression of the hematoma. Discussion: The association of nephrotic syndrome and renal vein thrombosis primarily suggests glomerulopathy, in particular extra-membranous glomerulonephritis. Sjgrens syndrome can be associated with extra-membranous glomerulonephritis without being its direct cause. Like, it is possible that it is a cause of glomerulonephritis, essentially extra membranous and membrano-proliferative. Conclusion: Sjgrens syndrome is generally underestimated cause of glomerulonephritis, which should be considered in cases of extra-membranous glomerulonephritis.展开更多
Understanding the variation of lags with respect to the X-ray flux is important to explore the geometry of the inner region of the accretion disk in AGNs.We performed frequency-lag,energy–lag and spectral studies for...Understanding the variation of lags with respect to the X-ray flux is important to explore the geometry of the inner region of the accretion disk in AGNs.We performed frequency-lag,energy–lag and spectral studies for two sets of observations,in order to investigate the variations in lags with respect to X-ray flux in the AGN source Mrk 704 using the XMM-Newton observatory.We divided one of the light curves into two sections which were noticed to exhibit a flux variation.The frequency-lag spectra in different energy domains revealed that reverberation(soft)lags varied along with the flux.For the first time,we show that the blurred reflection model can consistently explain the soft excess observed in the X-ray spectra for this source.The fluxes of soft(i.e.,reflection)and hard components were noted to vary by~18%and~9%respectively,across the sections.The soft lag amplitude was found to be larger at the high flux state than the amplitude at the low flux state.Most importantly,we found that both frequency-lag and energy–lag spectra do not display significant variation between two observational data sets despite a flux variation of 43%.This phenomenon cannot be explained by the reflection model because the soft lag amplitudes must be larger in the high flux state.The probable scenario is that,in the low flux state,the obscuring cloud delays the reflected soft photons which increases the soft lag amplitude.展开更多
Acute kidney injury is a critical but commonly occurring medical condition that presents with a sudden decline in kidney function. This comprehensive review article provides an in-depth examination of the risk element...Acute kidney injury is a critical but commonly occurring medical condition that presents with a sudden decline in kidney function. This comprehensive review article provides an in-depth examination of the risk elements, etiology, diagnosis, management, and preventive approach of AKI. The causes that contribute to the development of AKI include prerenal, intrinsic renal, and postrenal. The diagnostic approach to AKI includes clinical, laboratory, and imaging studies to evaluate the root cause analysis and to find out the severity of kidney injury. Timely and accurate diagnosis is crucial for initiating appropriate management strategies. The treatment strategies may include fluid and electrolyte management, medication adjustments, nutritional support, and renal replacement therapy. The prospect of recovery diverges as it relies on the individual factors, reasons, and gravity of the condition. This review highlights the importance of raising awareness among healthcare professionals and the public about AKI, early recognition of risk factors, and prompt management. Further research is needed to explore novel therapeutic approaches and refine existing management guidelines for this critical condition.展开更多
BACKGROUND Anaplasmosis is a tick-borne disease with a range of clinical manifestations,from a flu-like illness with fever and myalgias to a severe systemic disease with multisystem organ failure.Although renal involv...BACKGROUND Anaplasmosis is a tick-borne disease with a range of clinical manifestations,from a flu-like illness with fever and myalgias to a severe systemic disease with multisystem organ failure.Although renal involvement is not a common presentation,there have been few cases reporting acute kidney injury from Anaplasmosis.CASE SUMMARY We present a 55-year-old female with anaplasmosis who developed acute kidney injury due to membranoproliferative glomerulonephritis(MPGN).The patient originally presented with cough and shortness of breath.She was admitted to the hospital with a diagnosis of community acquired pneumonia and received antibiotics.During the hospital course she developed severe acute renal failure.Initial serological work up didn’t provide any conclusive diagnosis.Hence,she underwent kidney biopsy which showed MPGN pattern suggesting autoimmune,multiple myeloma or infectious etiology.Extensive work up was undertaken which was negative for autoimmune diseases,vasculitis panel,paraproteinemias but tested positive for IgG anaplasma with high titers indicating Anaplasmosis.CONCLUSION Our case shows a unique presentation of severe acute renal failure from MPGN from tick borne illness.MPGN is usually seen with autoimmune diseases,hepatitis C virus infections,paraproteinemias.Hence,we suggest that tick borne illness should also be considered when evaluating acute renal failure cases in tick borne prevalent regions.展开更多
Objective:To investigate the effect of the ethanolic extract of Rosa laevigata Michx.fruit on rats with mesangial proliferative glomerulonephritis based on the NLRP3 inflammasome pathway.Methods:Thirty Wistar rats wer...Objective:To investigate the effect of the ethanolic extract of Rosa laevigata Michx.fruit on rats with mesangial proliferative glomerulonephritis based on the NLRP3 inflammasome pathway.Methods:Thirty Wistar rats were divided into three groups,a blank control group,a diabetic nephropathy(DN)model group,and an ethanolic extract intervention group,according to the random number table method,with 10 rats in each group.One day before the experiment,basic feeding was initiated for all the rats;the changes in activity and weight of each group of rats were observed and recorded after 7 d,and a rat model of renal function injury was established after 1 d.Results:Compared with the control group,the model group had significantly higher kidney/body ratio,24 h urine protein,serum creatinine(SCr),blood urea nitrogen(BUN),glomerular mesangial cell(GMC)count,and extracellular matrix(ECM)positive area ratio(P<0.05);the same indicators were significantly lower in the intervention group than in the model group(P<0.05).The NLRP3 inflammasome pathway in renal intrinsic cells was activated in the intervention group.The overactivation of NLRP3 inflammasome is known to promote interleukin(IL)-1βrelease,which was inhibited in the intervention group.Conclusion:The ethanolic extract of Rosa laevigata Michx.fruit has a protective effect on renal intrinsic cells and may be related to NLRP3 inflammasome pathway,suggesting that the fruit of Rosa laevigata Michx.has a potential role in protecting renal intrinsic cells from inflammatory damage.NLRP3 inflammasomes are involved in the development of various chronic inflammatory diseases,such as acute and chronic glomerulonephritis and renal fibrosis.展开更多
原发性IgA肾病(IgA nephropathy,IgAN)是一种常见的肾小球疾病,是导致肾功能衰竭的重要原因,主要见于青年人和儿童。在过去的几十年里,糖皮质激素疗法一直备受争议。IgA肾病激素治疗评估的全球研究(the therapeutic effects of steroids...原发性IgA肾病(IgA nephropathy,IgAN)是一种常见的肾小球疾病,是导致肾功能衰竭的重要原因,主要见于青年人和儿童。在过去的几十年里,糖皮质激素疗法一直备受争议。IgA肾病激素治疗评估的全球研究(the therapeutic effects of steroids in IgA nephropathy global,TESTING)始于2012年,是一项国际性、多中心、双盲、随机、安慰剂对照试验,旨在评估在优化支持治疗条件下口服甲泼尼龙治疗进展风险高的IgAN患者的安全性和长期疗效。经过十年的努力,这项研究的成功完成表明,6~9个月的口服甲泼尼龙是保护IgAN高危患者肾功能的有效方案,但也显示出安全问题。TESTING研究发现,与全剂量甲泼尼龙方案相比,减少剂量的甲泼尼龙方案是有益的,且剂量的减少有助于提高甲泼尼龙的使用安全性。总的来说,TESTING研究提供了更多关于IgAN中糖皮质激素治疗剂量和安全性的数据。TESTING研究结果给患有IgAN的患儿提供了重要的启示。随着对IgAN发病机制的深入了解,正在进行的新治疗方案的研究将有助于进一步优化IgAN治疗的获益-风险比。展开更多
目的:观察基于名中医经验的中医辨证组方对老年慢性肾炎(CKD1-3a期)患者的有效性和安全性。方法:将84例老年慢性肾炎患者随机分成治疗组(42例)和对照组(42例)。治疗组采用西医基础联合中医辨证组方治疗;对照组仅接受西医基础治疗,疗程均...目的:观察基于名中医经验的中医辨证组方对老年慢性肾炎(CKD1-3a期)患者的有效性和安全性。方法:将84例老年慢性肾炎患者随机分成治疗组(42例)和对照组(42例)。治疗组采用西医基础联合中医辨证组方治疗;对照组仅接受西医基础治疗,疗程均为24周。观察两组治疗前后24 h尿蛋白定量(24 h UPQ)、肾小球滤过率(eGFR)等临床指标变化,以及疗效和安全性。结果:与本组基线比较,两组治疗后12、18、24周24 h UPQ均显著下降(P<0.01),且24周时治疗组优于对照组(P<0.01)。治疗组总有效率为67.57%,对照组总有效率41.67%,治疗组显著高于对照组(P<0.05)。将慢性肾脏病(CKD)3a期患者进行亚组分析提示,24周后治疗组eGFR较本组基线及同期对照组显著升高(P<0.01,P<0.05),而对照组治疗前后无显著变化。治疗组不良反应发生4例,对照组2例,两组无严重不良反应出现。结论:基于名中医经验的中医辨证组方治疗老年慢性肾炎(CKD1-3a期),可减少尿蛋白,提高临床疗效,对其中的CKD3a期患者可能具有改善eGFR作用,且安全性较好。展开更多
基金funds by the Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences(CIFMS),China(Grant No.:2022-I2M-1e014)the National Natural Science Foundation of China(Grant No.:82293684)+1 种基金Beijing Natural Science Foundation,China(Grant No.:L232084)the National Key R&D Program of China(Grant No.:2022YFA0806400).
文摘Dynamic changes in gut dysbiosis and metabolomic dysregulation are associated with immune-complex glomerulonephritis(ICGN).However,an in-depth study on this topic is currently lacking.Herein,we report an ICGN model to address this gap.ICGN was induced via the intravenous injection of cationized bovine serum albumin(c-BSA)into Sprague-Dawley(SD)rats for two weeks,after which mycophenolate mofetil(MMF)and losartan were administered orally.Two and six weeks after ICGN establishment,fecal samples were collected and 16S ribosomal DNA(rDNA)sequencing and untargeted metabolomic were conducted.Fecal microbiota transplantation(FMT)was conducted to determine whether gut normali-zation caused by MMF and losartan contributed to their renal protective effects.A gradual decline in microbial diversity and richness was accompanied by a loss of renal function.Approximately 18 genera were found to have significantly different relative abundances between the early and later stages,and Marvinbryantia and Allobaculum were markedly upregulated in both stages.Untargeted metabolomics indicated that the tryptophan metabolism was enhanced in ICGN,characterized by the overproduction of indole and kynurenic acid,while the serotonin pathway was reduced.Administration of losartan and MMF ameliorated microbial dysbiosis and reduced the accumulation of indoxyl conjugates in feces.FMT using feces from animals administered MMF and losartan improved gut dysbiosis by decreasing the Firmicutes/Bacteroidetes(F/B)ratio but did not improve renal function.These findings indicate that ICGN induces serous gut dysbiosis,wherein an altered tryptophan metabolism may contribute to its pro-gression.MMF and losartan significantly reversed the gut microbial and metabolomic dysbiosis,which partially contributed to their renoprotective effects.
文摘Post infectious Glomerulonephritis (PIGN) in renal allograft is a rare entity. Only a few Cases have been described in the literature. The post streptococcal glomerulonephritis is the classic example in native kidney. A wide variety of organism has been associated with PIGN in renal allograft such as Staphylococcus, Cytomegalovirus and Polyomavirus. We describe one case of Infection associated glomerulonephritis due to Echericha Coli, developed 5 years after kidney transplantation, in 47 years old female patient. The Clinical presentation was characterized by a peripheral edema and high blood pressure, and biological tests showed a nephrotic syndrome, an acute kidney injury, a consumption of Complement fractions. The renal biopsy revealed a diffuse endocapillary cell proliferation with preponderant deposits of C3. Total recovery was achieved 4 months after Methyprednisolone pulse and Cyclophasphamid with antimicrobial treatment.
文摘BACKGROUND Glomerulopathy with fibrillary deposits is not uncommon in routine nephropathology practice,with amyloidosis and fibrillary glomerulonephritis being the two most frequently encountered entities.Renal amyloid heavy and light chain(AHL)is relatively uncommon and its biopsy diagnosis is usually limited to cases that show strong equivalent staining for a single immunoglobulin(Ig)heavy chain and a single light chain,further supported by mass spectrometry(MS)and serum studies for monoclonal protein.But polyclonal light chain staining can pose a challenge.CASE SUMMARY Herein we present a challenging case of renal AHL with polyclonal and polytypic Ig gamma(IgG)staining pattern by immunofluorescence.The patient is a 62-yearold Caucasian male who presented to an outside institution with a serum creatinine of up to 8.1 mg/dL and nephrotic range proteinuria.Despite the finding of a polyclonal and polytypic staining pattern on immunofluorescence,ultrastructural study of the renal biopsy demonstrated the presence of fibrils with a mean diameter of 10 nm.Congo red was positive while DNAJB9 was negative.MS suggested a diagnosis of amyloid AHL type with IgG and lambda,but kappa light chains were also present supporting the immunofluorescence staining results.Serum immunofixation studies demonstrated IgG lambda monoclonal spike.The patient was started on chemotherapy.The chronic renal injury however was quite advanced and he ended up needing dialysis shortly after.CONCLUSION Tissue diagnosis of AHL amyloid can be tricky.Thorough confirmation using other available diagnostic techniques is recommended in such cases.
文摘BACKGROUND Primary immunoglobulin(Ig)-associated mesangiocapillary glomerulonephritis(Ig-MCGN)is an immune complex glomerulonephritis of unknown etiology.It is a common cause of chronic kidney disease in developing countries.There is limited data available on renal and patient outcomes of this disease from developing countries.AIM To determine the short-term renal and patient outcomes of adults with a tissueconfirmed diagnosis of primary Ig-MCGN at a single center in Pakistan.METHODS A retrospective cohort study of adult patients was conducted on biopsy-proven Ig-MCGN cases diagnosed between 1998 and 2019 at the Sindh Institute of Urology and Transplantation,Karachi,Pakistan.Secondary causes were excluded.The primary endpoint was renal survival without end-stage kidney disease(ESKD)or mortality.The secondary endpoint was the rate of remission during the 2-year follow-up period.Survival curves were made with the use of Kaplan-Meier estimates.RESULTS A total of 163 patients were included in the study and their mean follow-up duration was 29.45 months±21.28 months.Among baseline characteristics,young age,lower estimated glomerular filtration rate,requirement of kidney replacement therapy,presence of crescents,and severity of interstitial fibrosis and tubular atrophy were found to have a significant association with renal outcomes.The renal outcomes were negatively correlated with the presence of hypertension,level of complements,and degree of proteinuria.In all,63(37.4%)patients were treated with steroids and 21(13%)received combination therapy(cyclophosphamide with steroids).At 2 years,124(76.07%)patients were in complete remission or partial remission[56(34.3%)and 68(41.71%),respectively],while 32(19.63%)patients progressed to ESKD and 7(4.29%)patients died.CONCLUSION The outcomes of primary Ig-MCGN are guarded in Pakistan and require further prospective studies to improve our understanding of this relatively common disease so that more personalized treatment approaches can be developed.
文摘Introduction: Glomerular damage during Gougerot-Sjgren syndrome is much rarer than interstitial damage, and is essentially extra-membranous and membrano-proliferative glomerulonephritis. Observation: We report the case of a 44-year-old woman with primary Sjgrens syndrome, confirmed by clinical dryness syndrome, positive anti-SSA and anti-SSB antibodies, and a salivary gland biopsy revealing grade 4 lymphocytic sialadenitis according to CHISHOLMs classification. Later, the patient developed nephrotic syndrome, along with hypertension. Renal function remained normal with a creatinine level of 9.3 mg/l, and hematuria was absent. Only antinuclear antibodies tested positive, while anti-PLA2R antibodies were negative. A renal biopsy was performed, which was complicated on the same day by hemodynamic instability with hematuria. Renal CT scan with contrast injection revealed a posterior perirenal hematoma without contrast extravasation. Additionally, bilateral renal vein thrombosis was incidentally discovered, suggesting extramembranous glomerulonephritis. The patients hemodynamic status stabilized after fluid resuscitation with isotonic saline solution (0.9%), without the need for blood transfusion. Renal biopsy confirmed extramembranous glomerulonephritis with interstitial fibrosis and minimal tubular atrophy. The initial etiological assessment was negative. The patient was started on oral corticosteroids, angiotensin-converting enzyme inhibitors, and therapeutic anticoagulation for renal vein thrombosis. The patients condition improved, with the disappearance of the syndrome and spontaneous regression of the hematoma. Discussion: The association of nephrotic syndrome and renal vein thrombosis primarily suggests glomerulopathy, in particular extra-membranous glomerulonephritis. Sjgrens syndrome can be associated with extra-membranous glomerulonephritis without being its direct cause. Like, it is possible that it is a cause of glomerulonephritis, essentially extra membranous and membrano-proliferative. Conclusion: Sjgrens syndrome is generally underestimated cause of glomerulonephritis, which should be considered in cases of extra-membranous glomerulonephritis.
基金K.S.acknowledges the financial support from the Indian Space Research Organisation(ISRO),Government of India。
文摘Understanding the variation of lags with respect to the X-ray flux is important to explore the geometry of the inner region of the accretion disk in AGNs.We performed frequency-lag,energy–lag and spectral studies for two sets of observations,in order to investigate the variations in lags with respect to X-ray flux in the AGN source Mrk 704 using the XMM-Newton observatory.We divided one of the light curves into two sections which were noticed to exhibit a flux variation.The frequency-lag spectra in different energy domains revealed that reverberation(soft)lags varied along with the flux.For the first time,we show that the blurred reflection model can consistently explain the soft excess observed in the X-ray spectra for this source.The fluxes of soft(i.e.,reflection)and hard components were noted to vary by~18%and~9%respectively,across the sections.The soft lag amplitude was found to be larger at the high flux state than the amplitude at the low flux state.Most importantly,we found that both frequency-lag and energy–lag spectra do not display significant variation between two observational data sets despite a flux variation of 43%.This phenomenon cannot be explained by the reflection model because the soft lag amplitudes must be larger in the high flux state.The probable scenario is that,in the low flux state,the obscuring cloud delays the reflected soft photons which increases the soft lag amplitude.
文摘Acute kidney injury is a critical but commonly occurring medical condition that presents with a sudden decline in kidney function. This comprehensive review article provides an in-depth examination of the risk elements, etiology, diagnosis, management, and preventive approach of AKI. The causes that contribute to the development of AKI include prerenal, intrinsic renal, and postrenal. The diagnostic approach to AKI includes clinical, laboratory, and imaging studies to evaluate the root cause analysis and to find out the severity of kidney injury. Timely and accurate diagnosis is crucial for initiating appropriate management strategies. The treatment strategies may include fluid and electrolyte management, medication adjustments, nutritional support, and renal replacement therapy. The prospect of recovery diverges as it relies on the individual factors, reasons, and gravity of the condition. This review highlights the importance of raising awareness among healthcare professionals and the public about AKI, early recognition of risk factors, and prompt management. Further research is needed to explore novel therapeutic approaches and refine existing management guidelines for this critical condition.
文摘BACKGROUND Anaplasmosis is a tick-borne disease with a range of clinical manifestations,from a flu-like illness with fever and myalgias to a severe systemic disease with multisystem organ failure.Although renal involvement is not a common presentation,there have been few cases reporting acute kidney injury from Anaplasmosis.CASE SUMMARY We present a 55-year-old female with anaplasmosis who developed acute kidney injury due to membranoproliferative glomerulonephritis(MPGN).The patient originally presented with cough and shortness of breath.She was admitted to the hospital with a diagnosis of community acquired pneumonia and received antibiotics.During the hospital course she developed severe acute renal failure.Initial serological work up didn’t provide any conclusive diagnosis.Hence,she underwent kidney biopsy which showed MPGN pattern suggesting autoimmune,multiple myeloma or infectious etiology.Extensive work up was undertaken which was negative for autoimmune diseases,vasculitis panel,paraproteinemias but tested positive for IgG anaplasma with high titers indicating Anaplasmosis.CONCLUSION Our case shows a unique presentation of severe acute renal failure from MPGN from tick borne illness.MPGN is usually seen with autoimmune diseases,hepatitis C virus infections,paraproteinemias.Hence,we suggest that tick borne illness should also be considered when evaluating acute renal failure cases in tick borne prevalent regions.
基金This work was supported by the Health Commission of Hebei Province under the project Chuanxiong Extract Improves Inflammatory Response in Rats with Pyelonephritis Through IL-6/STAT3 Signaling Pathway(Project Number:20231486).
文摘Objective:To investigate the effect of the ethanolic extract of Rosa laevigata Michx.fruit on rats with mesangial proliferative glomerulonephritis based on the NLRP3 inflammasome pathway.Methods:Thirty Wistar rats were divided into three groups,a blank control group,a diabetic nephropathy(DN)model group,and an ethanolic extract intervention group,according to the random number table method,with 10 rats in each group.One day before the experiment,basic feeding was initiated for all the rats;the changes in activity and weight of each group of rats were observed and recorded after 7 d,and a rat model of renal function injury was established after 1 d.Results:Compared with the control group,the model group had significantly higher kidney/body ratio,24 h urine protein,serum creatinine(SCr),blood urea nitrogen(BUN),glomerular mesangial cell(GMC)count,and extracellular matrix(ECM)positive area ratio(P<0.05);the same indicators were significantly lower in the intervention group than in the model group(P<0.05).The NLRP3 inflammasome pathway in renal intrinsic cells was activated in the intervention group.The overactivation of NLRP3 inflammasome is known to promote interleukin(IL)-1βrelease,which was inhibited in the intervention group.Conclusion:The ethanolic extract of Rosa laevigata Michx.fruit has a protective effect on renal intrinsic cells and may be related to NLRP3 inflammasome pathway,suggesting that the fruit of Rosa laevigata Michx.has a potential role in protecting renal intrinsic cells from inflammatory damage.NLRP3 inflammasomes are involved in the development of various chronic inflammatory diseases,such as acute and chronic glomerulonephritis and renal fibrosis.
文摘原发性IgA肾病(IgA nephropathy,IgAN)是一种常见的肾小球疾病,是导致肾功能衰竭的重要原因,主要见于青年人和儿童。在过去的几十年里,糖皮质激素疗法一直备受争议。IgA肾病激素治疗评估的全球研究(the therapeutic effects of steroids in IgA nephropathy global,TESTING)始于2012年,是一项国际性、多中心、双盲、随机、安慰剂对照试验,旨在评估在优化支持治疗条件下口服甲泼尼龙治疗进展风险高的IgAN患者的安全性和长期疗效。经过十年的努力,这项研究的成功完成表明,6~9个月的口服甲泼尼龙是保护IgAN高危患者肾功能的有效方案,但也显示出安全问题。TESTING研究发现,与全剂量甲泼尼龙方案相比,减少剂量的甲泼尼龙方案是有益的,且剂量的减少有助于提高甲泼尼龙的使用安全性。总的来说,TESTING研究提供了更多关于IgAN中糖皮质激素治疗剂量和安全性的数据。TESTING研究结果给患有IgAN的患儿提供了重要的启示。随着对IgAN发病机制的深入了解,正在进行的新治疗方案的研究将有助于进一步优化IgAN治疗的获益-风险比。
文摘目的:观察基于名中医经验的中医辨证组方对老年慢性肾炎(CKD1-3a期)患者的有效性和安全性。方法:将84例老年慢性肾炎患者随机分成治疗组(42例)和对照组(42例)。治疗组采用西医基础联合中医辨证组方治疗;对照组仅接受西医基础治疗,疗程均为24周。观察两组治疗前后24 h尿蛋白定量(24 h UPQ)、肾小球滤过率(eGFR)等临床指标变化,以及疗效和安全性。结果:与本组基线比较,两组治疗后12、18、24周24 h UPQ均显著下降(P<0.01),且24周时治疗组优于对照组(P<0.01)。治疗组总有效率为67.57%,对照组总有效率41.67%,治疗组显著高于对照组(P<0.05)。将慢性肾脏病(CKD)3a期患者进行亚组分析提示,24周后治疗组eGFR较本组基线及同期对照组显著升高(P<0.01,P<0.05),而对照组治疗前后无显著变化。治疗组不良反应发生4例,对照组2例,两组无严重不良反应出现。结论:基于名中医经验的中医辨证组方治疗老年慢性肾炎(CKD1-3a期),可减少尿蛋白,提高临床疗效,对其中的CKD3a期患者可能具有改善eGFR作用,且安全性较好。