[Clinical observation on the treatment of ossification of the posterior longitudinal ligament of the cervical spine using 3D printed self-stable zero-profile artificial vertebral body].

Objective: To observe the clinical efficacy of a 3D printed self-stable zero-profile artificial vertebral body for anterior cervical corpectomy decompression and fusion in the treatment of ossification of the posterior longitudinal ligament (OPLL) of the cervical spine. Methods: In this prospective randomized controlled trial, patients diagnosed with OPLL in Luohe Central Hospital from January to July 2022 were divided into a zero-profile group (3D printed self-stable zero-profile artificial vertebral body was used for internal fixation and fusion after anterior cervical subtotal decompression,) and titanium-mesh group (titanium-mesh and titanium plate were used for internal fixation and fusion after anterior cervical subtotal decompression) according to envelope random method. Operation time, intraoperative blood loss, Japanese Orthopaedic Association (JOA) score and improvement rate, incidence of postoperative prosthesis subsidence, and bone graft fusion were recorded and compared between the two groups. Results: Finally, 21 patients in the zero notch group and 20 patients in the titanium mesh group were included in the study and were followed-up. In the zero-profile group, there were 16 males and 5 females, aged (48.0±12.7) years. In the titanium-mesh group, there were 14 males and 6 females, aged (49.8±10.2) years. All the 41 patients successfully completed the operation. In the zero-profile group, the surgical time was (50.04±8.45) minutes, the blood loss was (95.38±26.07) ml and the hospitalization cost was (42.32±6.12) thousand yuan. In the titanium-mesh group, the surgical time was (59.20±11.95) minutes, the blood loss was (93.10±27.86) ml and the hospitalization cost was (42.10±6.71) thousand yuan. The surgical time in the zero-profile group was shorter than that in the titanium-mesh group (P=0.007), and there was no statistically significant difference in blood loss and hospitalization costs between the two groups (both P>0.05). The 41 patients were followed-up for (14.29±1.45) months. Four cases (20.0%) in the titanium mesh group experienced swallowing difficulties and 0 cases in the zero incision group, the difference between the two groups was statistically significant (P=0.048). No intraoperative hematoma, spinal cord nerve recompression, airway crisis, incision infection complications, and no steel plate or screw breakage or displacement occurred after surgery. At the last follow-up, all cases had bone fusion. At the follow-up of 12 months after surgery, the JOA score of the zero incision group increased from preoperative (10.33±1.71) points to (15.47±0.81) points, with an improvement rate of 76.1%±15.7%; the JOA score of the titanium mesh group increased from (10.30±1.75) points to (15.30±0.92) points, with an improvement rate of 73.2%±16.7%; there was no statistically significant difference in improvement rate between the two groups (P=0.580). At the follow-up of 12 months after surgery, 1 case (4.8%) in the zero incision group and 8 cases (40.0%) in the titanium mesh group experienced implant sinking, and the difference between the two groups was statistically significant (P=0.009). Conclusion: Compared with titanium-mesh, 3D printed self-stable zero-profile artificial vertebral body for the treatment of OPLL of the cervical spine can achieve good surgical efficacy, shorter surgical time, lower incidence of postoperative chronic swallowing discomfort, and can provide a better bone material bonding interface and be less prone to prosthesis settlement.

[A single-center retrospective study of percutaneous drainage clinical characteristics of grade B and C postoperative pancreatic fistula and determination of the optimal intervention time].

Objective: To classified the fluid location of of grade B and C postoperative pancreatic fistula (POPF) and propose processing flow. Methods: Data from 232 patients who underwent pancreatic surgery from January 2018 to December 2022 at Department of General Surgery & Hepato-billo-pancreatic,Beijing Hospital were collected retrospectively. Forty-six patients who suffered from grade B and C POPF underwent ultrasound-guided drainage. There were 32 males and 14 females, with an age of (60.2±13.7)years (range:18 to 85 years). The imaging data of postoperative CT were collected and the the fluid location was classified. Then analyzed the drainage status when patents were diagnosed as POPF. Machine learning was performed and a random forest model was applied to construct the relationship between intervention time and mortality. The optimal intervention time was calculated. The patients were then divided into early and late intervention groups and clinical data and outcomes were compared using the t test,Mann-Whitney U test, χ2 test or Fisher's exact test between the two groups. Results: Based on the results of the random forest model, the optimal puncture time was within 5.38 days after the diagnosis of POPF. Based on the optimal time, 21 patients were subsumed into early intervention group and 25 patients were subsumed into late intervention group. The location of fluid collection was classified into four types: peripancreatic (32.7%,15/46), extra-pancreatic and epigastric (41.3%,19/46), extra-pancreatic and hypogastic (13.0%,6/46) and diffused (13.0%,6/46). The status of the drainage included normal in 10 patients (21.8%), displaced drain in 18 patients (39.1%) and drain removed or blocked in 18 patients (39.1%). The perioperative mortality rate was 19.0% (4/21) in the early intervention group and 8.0%(2/25) in the late. The late intervention group had significantly higher rates of positive drainage fluid cultures (88.0%(22/25) vs. 42.9%(10/21), χ2=10.584, P=0.001), secondary surgery (24.0%(6/25) vs. 0(0/21), P=0.025), and readmission within 90 days(32.0%(8/25) vs. 4.8%(1/21),χ2=5.381, P=0.020) than the early group, and a significantly longer postoperative hospital stay(M(IQR))(24(20)days vs. 39(53)days,Z=3.023,P=0.003). Conclusions: The location of the POPF fluid collection is classified into four types. Early radiological evaluation can detect abdominal effusion promptly,and early puncture and drainage will be beneficial in improving outcomes in these patents.

[Methylophiopogonanone a Inhibits LPS/ATP-Induced Macrophage Pyroptosis via ROS/NLRP3 Pathway].

As a byproduct of mitochondrial respiration or metabolism, reactive oxygen species (ROS) can act as a signaling molecule to activate NLR family pyrin domain containing 3 (NLRP3) inflammasome, thereby triggering immune response. NLRP3 inflammasome acts as a sensor of various danger signals and is central to the control of pyroptosis occurrence. Macrophage pyroptosis is closely related to atherosclerosis, arthritis, pulmonary fibrosis and other inflammatory diseases. Methylophiopogonanone A (MO-A) is a main homoisoflavonoid in Chinese herb Ophiopogonis Radix, which has antioxidant effect. However, it is not clear whether MO-A can alleviate macrophage pyroptosis by inhibiting oxidative stress. Here we have shown that MO-A increases the activities of superoxide dismutase (SOD) and catalase (CAT), inhibits the production of ROS, reduces the activation of NLRP3 inflammasome and the release of lactate dehydrogenase (LDH), and inhibits pyroptosis in macrophages induced by lipopolysaccharides (LPS) and adenosine triphosphate (ATP). These effects can be reversed by the ROS promoter H2O2. Therefore, MO-A can inhibit macrophage pyroptosis through the ROS/NLRP3 pathway and may be considered as a candidate drug for the treatment of inflammatory diseases.

[Influencing factors of poor treatment adherence in uncontrolled asthma patients in China].

Objective: To evaluate the influencing factors of poor treatment adherence in patients with uncontrolled asthma in China. Methods: From April 2017 to April 2018, all asthma patients with uncontrolled asthma and poor compliance in 32 third-class hospitals in 28 provinces and cities of China mainland included in the "National Mobile Asthma Assessment and Management Project" were selected as the subjects. A total of 923 patients were enrolled in the study including 388 males and 535 females. By analyzing the baseline data of the patients at the initial visit when enrolled, the influencing factors of poor adherence of adult asthma was analyzed by inter-group comparison and χ2 test. Results: Poor compliance in asthma was related to the following factors: age from 59 to 68 years old, course of disease more than 20 years, low education level, non-local follow-up, having obstructive ventilation dysfunction and low awareness of the disease[P values were 0.026(t=1.20), 0.004(t=3.97), 0.001(t=4.92), 0.003(t=3.98), 0.032(t=1.22) and 0.001(t=4.99), respectively]. Totally, 243 patients (26.33%) answered all the questions about asthma correctly. Their medication adherence rating scale (MARS-A) scores were significantly higher than those who answered incompletely correctly (36.23±5.85 vs. 31.77±5.74, P=0.001). Conclusions: The adherence of adult asthma patients was affected by individual and external environment factors. Clinicians should choose individualized methods based on the characteristics of patients. Patient education should be strengthened to improve patients' awareness of the disease at the same time.

[Efficacy and prognosis of newly diagnosed multiple myeloma patients treated with bortezomib, lenalidomide and dexamethasone].

Objective: To evaluate the efficacy of VRD (bortezomib+lenalidomide+dexamethasone) in newly diagnosed multiple myeloma (NDMM) patients as well as the effect of the regimen on the long-term prognosis. Methods: The clinical characteristics, survival rates, response rates and minimal residual disease (MRD) of patients with NDMM at Institute of Hematology & Blood Diseases Hospital from January 1, 2013 to January 1, 2020 were retrospectively analyzed. Subgroup analysis was also performed among groups according to the cytogenetics and autologous stem cell transplantation (ASCT) of patients. Results: A total of 87 patients were retrospectively analyzed. The age[M(Q1,Q3)] of all patients was 56 (51, 61) years and males and females accounted for 58.6% (51/87) and 41.4% (36/87), respectively. The overall response rate (ORR) was 95.9% (71/74) after 2 courses of induction therapy, with 13.5% (10/74) achieving the deep response [complete response (CR) or better] and 51.3% (38/74) of patients achieving a very good partial response (VGPR) or better. After 4 courses of induction therapy, the ORR achieved 95.2% (60/63), and the proportions of the deep response and VGPR or better grew up to 46.0% (29/63) and 77.7% (49/63). According to the treatment, the patients (≤65 years old) were divided into transplantation group and non-transplantation group. After the induction therapy, 88.8% (32/36) of patients in the transplantation group achieved VGPR or better, and 55.5% (20/36) reached the deep response. After the transplantation, the proportion increased to 97.1% (34/35) and 77.2% (27/35), respectively(88.8% vs 97.1%,P=0.174;55.5% vs 77.2%,P=0.055), with the rate of undetectable MRD increasing from 44.4% (16/36) to 77.8% (28/36) (P=0.004). In the non-transplantation group, 74.2% (23/31) of patients achieved VGPR or better after 4 courses of induction therapy, 35.5% (11/31) of the patients achieved deep response and the rate of undetectable MRD was 37.0% (10/27). Compared with the non-transplantation group, transplantation was associated with a higher rate of complete response (89.5% vs 53.1%, P<0.001) and a lower rate of MRD detection(78.4% vs 55.2%, P=0.045). The median follow-up time of all patients was 26.3 months (20.8, 33.8). The median progression-free survival and overall survival were not reached. The three-year PFS and OS rates were 78.4% and 87.2%, respectively. None of the standard-risk group, the high-risk group, the transplantation group and non-transplantation group achieved the median PFS and OS. Conclusions: VRD regimen has a promising efficacy and results in a substantial survival benefit. ASCT after VRD induction therapy is associated with higher rate of deep response, higher rate of undetectable MRD and longer survival.

[Effects of gastrectomy on quality of life of patients with gastric cancer and its evaluation methods].

Surgery is the main curative treatment for gastric cancer. As surgical techniques continue to improve, the scope of radical resection and lymph node dissection has formed consensus and guidelines, so people's attention has gradually shifted to the quality of life (QOL) of patients after surgery. Postgastrectomy syndrome is a series of symptoms and signs caused by complications after gastrectomy, which can affect the quality of life of patients with gastric cancer after surgery. Gastrectomy and anastomosis are closely related to postgastrectomy syndrome. The selection of appropriate surgical methods is very important to the quality of life of patients after surgery. This article reviews the effects of gastrectomy procedures on postoperative quality of life of patients with gastric cancer and its evaluation methods.

[Clinical characteristics and prognosis of 46 patients with macrofocal multiple myeloma].

The clinical characteristics, laboratory results, response to treatment, and prognosis of 46 macrofocal multiple myeloma(MFMM) patients at our center from January 2013 to December 2019 were analyzed retrospectively. The other 92 patients were selected as matched-controls based on diagnostic period and treatment. Among the 1 137 MM patients, 46 patients met the definition criteria of MFMM (4.0%), with median age 56 years, which was not statistically different from whole MM population (P=0.066). According to the international staging system (ISS) and Revised ISS, the proportion of patients with advanced stage in MFMM group was less common than that of controls (P<0.05). More plasmacytomas in MFMM patients were presented (43.5% vs. 18.5%, P<0.05). Regarding cytogenetic abnormalities, there were minor patients manifesting high-risk features in MFMM group (15.8% vs. 32.2%, P=0.058). Translocation(11;14) could be detected in 32.4% MFMM patients and 9.4% typical myeloma patients (P<0.05). The treatment regimens were comparable. As to the best response of treatment, the complete response (CR) rate in MFMM group was significantly higher than that of controls (78.3% vs. 60.9%, P<0.05). The median follow-up time was 37.9 months. The median progression-free survival in MFMM and control groups were 77.5 vs. 39.8 months, respectively (P<0.05). The overall survival (OS) of MFMM patients was significantly longer (not reached vs. 68.2 months, P<0.05).

[An area under curve-based nomogram to predicts vancomycin-associated nephrotoxicity in critically ill patients: a retrospective cohort study].

Objective: To develop an area under curve (AUC)-based nomogram to predict vancomycin-associated nephrotoxicity in critically ill patients. Methods: This retrospective cohort study included adult patients treated with vancomycin in the intensive care unit at a tertiary teaching hospital from January 2015 to December 2017. Baseline clinical characteristics before vancomycin treatment and pharmacokinetic parameters were collected to establish a prediction model of nephrotoxicity. Univariate analysis was used to screen variables, and multivariate logistic regression analysis was used to establish the prediction model and nomogram. Results: A total of 159 patients met the inclusion criteria, sixty-four were included in the final analysis. Sixteen patients (25%, 16/64) developed vancomycin-associated nephrotoxicity. The following variables were incorporated into the prediction model: vancomycin AUC, estimated glomerular filtration rate (GFR), and combined nephrotoxic drugs. The following equation was established to calculate the probability of nephrotoxicity: logit (P)=-4.83+0.009×AUC-2.87×1 (if GFR>60 ml/min)+2.53×1 (if number of combined nephrotoxic drugs≥2). A nomogram was generated based on the equation. The receiver-operating characteristic curve demonstrated that the AUC of the prediction model was 0.927 (95%CI 0.851-1.000). The cut-off value of the probability of nephrotoxicity was 26.48%. The sensitivity and specificity were 87.5% and 87.5% respectively. Conclusion: The incidence of vancomycin-associated nephrotoxicity is high. The AUC-based nomogram can effectively predict vancomycin-associated nephrotoxicity in critically ill patients.

[A five-year follow-up report on lung imaging and exercise endurance of a patient with paraquat poisoning].

A patient with paraquat poisoning was followed up for five years, and it was showed that the interstitial lesion areas in chest CT of this patient gradually decreased after acute period of the poisoning and no significant changes were found six months later. After that the density of the lesions gradually reduced, while the cystic air cavities slowly increased. In addition, the patient's exercise endurance gradually improved over time, and the lung function was close to the normal level five years after poisoning. The follow-up report helps clinicians to have a deeper understanding of the long-term outcome of paraquat poisoning.

The effects of gastric cancer interstitial fluid on tumors based on traditional Chinese medicine 'phlegm' theory and the investigation on the mechanism through microRNA-21 regulation.

This study aimed to investigate the effects of gastric cancer interstitial fluid (GCIF) on tumors and explore the possible mechanism of Xiaotan Sanjie decoction (XTSJ) on treatment of gastric cancer from the view of regulating microRNA-21 (miR-21) expression. The GCIF was extracted and identified by measuring the levels of interleukin-8 (IL-8), intercellular adhesion molecule 1 (ICAM-1) and miR-21. The effects of GCIF on the proliferation of SGC-7901 cells and tumor growing were assessed by cell counting kit-8 (CCK-8) assay and subcutaneously transplanted tumor-bearing nude mice model, respectively. Additionally, inhibition effect of XTSJ decoction on proliferation of SGC-7901 cells intervened by GCIF were assessed in vitro and anti-cancer effect of it was further assessed using orthotopic transplanted tumor-bearing nude mice model. The concentration of SGC-7901 gastric cancer cells were dependent on the concentration of the added GCIF. After 72 hours of continuous culture, the interstitial fluid had an obvious proliferative effect on the SGC-7901 tumor cells, which was the most significant in the high concentration group. XTSJ decoction could inhibit the growth-promoting effect (P < 0.01) of GCIF on gastric cancer cells. Intervention of the GCIF might promote the growth (P < 0.05) of the subcutaneously transplanted tumors in nude mice and decrease the net weight of the tumor-bearing nude mice (P < 0.05) after tumor removal. The GCIF was able to up-regulate the expression (P < 0.001) of miR-21 in the subcutaneously transplanted tumors. XTSJ decoction could downregulate the expression (P < 0.05) of miR-21 in SGC-7901 orthotopically transplanted tumors. XTSJ decoction can inhibit the multiplicative effect of GCIF on gastric cancer cells, growth of gastric tumor and promotion effect of GCIF on tumors, probably due to the down-regulating miR-21 expression in tumor tissues.

[Non-alcoholic fatty liver disease increases the incidence rate of type 2 diabetes mellitus: a cohort study based on a rural town elderly population of southern Jiangsu].

Objective: To investigate the impact of non-alcoholic fatty liver disease (NAFLD) on the incidence of type 2 diabetes mellitus (T2DM) in an elderly population. Methods: A rural elderly population of Kunshan city, Jiangsu Province were used as the research subject. Prior diabetes mellitus, heavy alcohol consumption and incomplete data were excluded from prospective cohort study analysis. Annual physical examination and follow-up were conducted from 2007 to 2016. T2DM onset, death and loss to follow-up visits were observed as the research subject end points. According to the baseline physical examination results, the study subjects were divided into NAFLD and control groups, and further baseline data of both groups were analyzed whether there were match. The cumulative incidence rate of T2DM were statistically analyzed and compared between the two groups. Simultaneously, the relationship between the two groups of various indexes and the newly developed T2DM were analyzed using Kaplan-Meier. The variables with P < 0.1 were selected and incorporated into the Cox proportional hazard regression model. The impact of NAFLD on the incidence of T2DM was analyzed in an elderly population. Results: At baseline, there were statistically significant differences in the distribution of age, sex, waist circumference, body mass index, systolic blood pressure, diastolic blood pressure, direct bilirubin, blood urea nitrogen and triglycerides between NAFLD and non-NAFLD groups. However, fasting blood glucose, serum creatinine, total bilirubin, total cholesterol, low density lipoprotein cholesterol and high-density lipoprotein cholesterol had no statistically significant differences between the two groups. After nine years of follow-up, 207 newly developed T2DM cases, 52 NAFLD cases and 155 control group were selected as the study subjects. The cumulative incidence rates were 4.25%, 10.34%, and 3.55%, respectively. Kaplan-Meier analysis result showed that there were statistically significant differences in the cumulative incidence rates between the two groups from five-year. NAFLD had increased the T2DM risk in an elderly population by approximately 2.14 times (2.14 CI: 1.132 ~ 4.047) at five-year, and then had increased year by year thereafter. Univariate analysis showed that T2DM risk was 2.76 times higher in NAFLD than non-NAFLD groups (95% CI: 2.015 ~ 3.777). After adjustment for gender, age, body mass index, waist circumference, systolic blood pressure, diastolic blood pressure, serum creatinine, triglyceride, total cholesterol, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol, T2DM risk ratio was 1.68 times higher in NAFLD than control groups (95% CI: 1.163 ~ 2.425). Conclusion: NAFLD is an independent long-term risk factor for the T2DM onset in an elderly population.

[Chronic lymphocytic leukemia with t (14;18) (q32;q21) : report of eight cases and a literature review].

Objective: The study aimed to analyze the clinical features and prognosis of chronic lymphocytic leukemia (CLL) with t (14;18) (q32;q21) and conduct a literature review. Methods: The clinical data of 8 patients with CLL carrying t (14;18) (q32;q21) seen in Jiangsu Province Hospital from November 2009 to November 2019 were collected and analyzed. Results: Among the 8 cases, 7 were male and 1 was female. The median age at diagnosis was 70 years old. The immunophenotype score was 5 in 3 patients. 4 patients were scored 4 and the remaining one scored 3. The bone marrow histopathology showed the typical manifestation of CLL. Karyotype analysis showed that all the cases carried t (14;18) (q32;q21) in the stemline. The t (14;18) (q32;q21) showed as the sole abnormality in 3 cases, with +12 in 4, and with 13q- in 1 case. 13q- was found in another 3 patients by FISH. Immunoglobulin heavy chain gene (IGHV) mutation status was detected in 6 cases and all of them were mutated. None of them used IGHV3-21. Only 1 case harbored TP53 mutation and no TP53, SF3B1, NOTCH1, or MYD88 mutations were found in the remaining cases who underwent the relevant tests. At a median follow-up of 30.9 months, 1 case died. The remaining 7 cases survived and 3 of them have not reached the treatment indication. 4 patients who received chemotherapy or immunotherapy were stable. Conclusions: The t (14;18) (q32;q21) is rare in CLL and often accompanied by +12 and mutated IGHV. CLL with t (14; 18) (q32; q21) tends to have a good prognosis.

[Microcontact printing and its application prospect in bone tissue engineering].

The application of bone tissue engineering regeneration technology is expected to repair maxillofacial bone tissue defects caused by tumors, trauma, etc. Surface patterning occupies an important position in bone tissue engineering. Microcontact printing is an emerging technology through which the elastic stamp contacts with the substance and materials used as ink can be transferred from stamp to substance to form patterns. The biggest characteristic of the technology is to fabricate high-throughput and high-accuracy patterned surface, making it widely applied. This review summarized the application and optimization of microcontact printing, and prospected its application in bone tissue engineering.

[The incidence risk of elevated fasting blood glucose in people with fatty liver disease: a cohort study of 40 000 people over the past 10 years].

Objective: To analyze the time point when patients with fatty liver disease had a significantly higher risk of elevated fasting blood glucose than those without in the physical examination group in Karamay Central Hospital, factors affecting the incidence of elevated blood glucose in patients with fatty liver disease, and the influence of the number of influencing factors on it. Methods: Physical examination data from Karamay Central Hospital during September 2008 to April 2017 were retrospectively analyzed. Combined with the survival analysis, the 1-,3-, 5-, and 7-year prevalence rates of elevated fasting glucose occurs in people with and without fatty liver disease were analyzed. Z-test was used to compare the survival rate difference at each time point. Cox regression model was used for multivariate analysis. Results: 10 802 people were in the fatty liver group. The elevated fasting blood glucose incidence density was 61/1 000 person-years, and the 1-, 3-, 5-, and 7-year prevalence rates were 2%, 16%, 28%, and 38%, respectively. 29 579 people were in the non-fatty liver group. The elevated fasting blood glucose incidence density was 23/1000 person-years, and the 1-, 3-, 5-, and 7-year prevalence rates were 1%, 7%, 11%, and 16%, respectively. The short-term and long-term elevated fasting blood glucose incidence risk were significantly higher in fatty liver group than non-fatty liver group(P < 0.001). The elevated fasting blood glucose incidence risk was apparently higher in fatty liver group than that of non-fatty liver group from the first year onward (P < 0.001). Age≥50 year's old (HR = 1.954, 95% CI :1.792-2.132), elevated body mass index (HR = 1.397, 95% CI : 1.198-1.629), blood pressure (HR = 1.284, 95% CI : 1.181-1.397), triglycerides (HR = 1.171, 95% CI: 1.077-1.274) were independent risk factors, which promoted the elevated fasting blood glucose incidence risk in patients with fatty liver disease. Fatty liver combined with the above 2, 3, and 4 risk factors had apparently increased the incidence risk of elevated fasting blood glucose (P < 0.001). Conclusion: People with fatty liver disease had a higher risk of elevated fasting blood glucose from the first year than those without. Age≥50 year's old, elevated blood pressure, body mass index and triglyceride might increase risk of elevated fasting blood glucose in patients with fatty liver disease, combined with the above 2,3 or 4 risk factors can increase the risk of elevated fasting blood glucose.

[Immunoglobulin M multiple myeloma: a six-case report and literature review].

Objective: To investigate the clinical characteristics, responses, and prognosis of immunoglobulin M multiple myeloma (IgM MM) . Methods: The clinical characteristics, laboratory results, bone marrow biopsy results, response, and prognosis of six cases of IgM MM in the Blood Diseases Hospital, Chinese Academy of Medical Sciences, from December 18, 2009 to October 29, 2020 were collected and analyzed. Results: All six cases met the diagnosis criteria of IgM MM. There were four males and two females. The median age at first diagnosis was 70 (59-81) years. According to Durie-Salmon (DS) staging, 2 cases were in ⅠA, and 4 cases were in ⅢA. According to the International Staging System (ISS) , 4 cases were in Ⅱ, and 2 cases were in Ⅲ. The initial symptoms were as follows: 4 cases of bone pain, 3 cases of hyperviscosity, and 2 cases of lymphadenopathy or hepatosplenomegaly. Laboratory results showed the following: median blood M protein: 39.11 (3.61-75.56) g/L; median serum IgM: 69.35 (4.35-137.00) g/L; median hemoglobin: 87.0 (70-131) g/L; median blood creatinine: 83.6 (53.0-129.6) µmol/L; median blood calcium: 2.12 (2.11-2.50) mmol/L. The median ratio of bone marrow plasma cells was 0.390 (0.255-0.590) , and in four cases, plasma cells were observed in blood smears. Karyotype analysis and fluorescence in situ hybridization (FISH) examination showed the following: 1 case of hypodiploidy, 2 cases of P53 gene deletion, 1 case of 1q21 amplification positive, and 4 cases of RB-1 gene deletion positive. The immunoglobulin heavy chain (IgH) rearrangement was positive in all cases, of which 3 cases were CCND1/IgH fusion gene-positive identified with t (11;14) rearrangement. Immunophenotyping revealed that all cases were positive for CD38, CD138, and monoclonal light chain and four cases were weakly positive for CD20. All cases accepted proteasome inhibitor-based regimens and attained the response of partial remission to strict complete remission. Conclusion: In addition to the typical clinical manifestations of myeloma, IgM MM is also characterized by hyperviscosity, lymphadenopathy, or hepatosplenomegaly, and t (11;14) is the most frequent cytogenetics aberration. Furthermore, the response and prognosis of IgM MM are similar to other common myeloma subtypes.

A Cross-Sectional Study of GLIM-Defined Malnutrition Based on New Validated Calf Circumference Cut-off Values and Different Screening Tools in Hospitalised Patients over 70 Years Old.

BACKGROUND AND AIMS: The Global Leadership Initiative on Malnutrition (GLIM) is new criteria for diagnosing malnutrition that need validation adjusted to race. Our aim is to determine the optimal reference values of calf circumference (CC), investigate the prevalence of GLIM-defined malnutrition based on different screening tools in inpatients over 70 years old in China and assess its relationship with clinical outcomes. METHODS: We designed two continuity studies by analyzing a prospective multicenter database. First, we estimated and validated the CC cut-off values by receiver operating characteristic analyses against in-hospital mortality. Then the patients who were at risk by NRS 2002, MNA-SF and MUST were assessed by the GLIM criteria using the new CC values. Some clinical parameters and outcome data were evaluated. RESULTS: The optimal cut-off values of CC were 29.6 cm for male patients and 27.5 cm for female patients. The prevalence of GLIM-defined malnutrition was 27.5% by using NRS2002, 32.6% by using MNA-SF and 25.4% by using MUST. Patients with GLIM-defined malnutrition showed significantly worse values in BMI, total protein, albumin, neutrophil/lymphocyte ratio, CC, rate of complication, in-hospital mortality, length of stay, and total hospital cost than normal patients. Multivariate logistic regression showed the odds ratio of in-hospital mortality was significantly associated with GLIM defined malnutrition by using MNA-SF [OR = 1.231, 95%CI (1.022, 1.484), P = 0.029]. CONCLUSIONS: The Chinese reference values of CC for inpatients over 70 years old were validated by in-hospital mortality, which could be implemented in GLIM criteria. And this population possessed a high prevalence of nutrition risk and malnutrition. GLIM criteria with MNA-SF seems to be the first choice to diagnose malnutrition.